forked from AuroraMiddleware/gtk
6403 lines
182 KiB
C
6403 lines
182 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include <math.h>
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#include <string.h>
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#include "gtklabel.h"
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#include "gtkaccellabel.h"
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#include "gtkdnd.h"
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#include "gtkmain.h"
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#include "gtkmarshalers.h"
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#include "gtkwindow.h"
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#include "gdk/gdkkeysyms.h"
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#include "gtkclipboard.h"
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#include "gtkimagemenuitem.h"
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#include "gtkintl.h"
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#include "gtkseparatormenuitem.h"
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#include "gtktextutil.h"
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#include "gtkmenuitem.h"
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#include "gtknotebook.h"
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#include "gtkstock.h"
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#include "gtkbindings.h"
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#include "gtkbuildable.h"
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#include "gtkimage.h"
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#include "gtkshow.h"
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#include "gtktooltip.h"
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#include "gtksizerequest.h"
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#include "gtkprivate.h"
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#define GTK_LABEL_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_LABEL, GtkLabelPrivate))
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typedef struct
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{
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gint wrap_width;
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gint width_chars;
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gint max_width_chars;
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gboolean mnemonics_visible;
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} GtkLabelPrivate;
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/* Notes about the handling of links:
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*
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* Links share the GtkLabelSelectionInfo struct with selectable labels.
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* There are some new fields for links. The links field contains the list
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* of GtkLabelLink structs that describe the links which are embedded in
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* the label. The active_link field points to the link under the mouse
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* pointer. For keyboard navigation, the 'focus' link is determined by
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* finding the link which contains the selection_anchor position.
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* The link_clicked field is used with button press and release events
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* to ensure that pressing inside a link and releasing outside of it
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* does not activate the link.
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*
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* Links are rendered with the link-color/visited-link-color colors
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* that are determined by the style and with an underline. When the mouse
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* pointer is over a link, the pointer is changed to indicate the link,
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* and the background behind the link is rendered with the base[PRELIGHT]
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* color. While a button is pressed over a link, the background is rendered
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* with the base[ACTIVE] color.
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*
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* Labels with links accept keyboard focus, and it is possible to move
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* the focus between the embedded links using Tab/Shift-Tab. The focus
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* is indicated by a focus rectangle that is drawn around the link text.
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* Pressing Enter activates the focussed link, and there is a suitable
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* context menu for links that can be opened with the Menu key. Pressing
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* Control-C copies the link URI to the clipboard.
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*
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* In selectable labels with links, link functionality is only available
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* when the selection is empty.
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*/
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typedef struct
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{
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gchar *uri;
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gchar *title; /* the title attribute, used as tooltip */
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gboolean visited; /* get set when the link is activated; this flag
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* gets preserved over later set_markup() calls
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*/
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gint start; /* position of the link in the PangoLayout */
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gint end;
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} GtkLabelLink;
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struct _GtkLabelSelectionInfo
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{
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GdkWindow *window;
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gint selection_anchor;
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gint selection_end;
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GtkWidget *popup_menu;
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GList *links;
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GtkLabelLink *active_link;
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gint drag_start_x;
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gint drag_start_y;
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guint in_drag : 1;
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guint select_words : 1;
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guint selectable : 1;
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guint link_clicked : 1;
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};
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enum {
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MOVE_CURSOR,
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COPY_CLIPBOARD,
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POPULATE_POPUP,
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ACTIVATE_LINK,
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ACTIVATE_CURRENT_LINK,
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LAST_SIGNAL
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};
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enum {
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PROP_0,
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PROP_LABEL,
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PROP_ATTRIBUTES,
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PROP_USE_MARKUP,
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PROP_USE_UNDERLINE,
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PROP_JUSTIFY,
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PROP_PATTERN,
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PROP_WRAP,
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PROP_WRAP_MODE,
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PROP_SELECTABLE,
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PROP_MNEMONIC_KEYVAL,
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PROP_MNEMONIC_WIDGET,
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PROP_CURSOR_POSITION,
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PROP_SELECTION_BOUND,
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PROP_ELLIPSIZE,
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PROP_WIDTH_CHARS,
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PROP_SINGLE_LINE_MODE,
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PROP_ANGLE,
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PROP_MAX_WIDTH_CHARS,
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PROP_TRACK_VISITED_LINKS
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};
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/* When rotating ellipsizable text we want the natural size to request
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* more to ensure the label wont ever ellipsize in an allocation of full natural size.
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* */
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#define ROTATION_ELLIPSIZE_PADDING 2
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static guint signals[LAST_SIGNAL] = { 0 };
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static const GdkColor default_link_color = { 0, 0, 0, 0xeeee };
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static const GdkColor default_visited_link_color = { 0, 0x5555, 0x1a1a, 0x8b8b };
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static void gtk_label_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_label_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_label_destroy (GtkObject *object);
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static void gtk_label_finalize (GObject *object);
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static void gtk_label_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static void gtk_label_state_changed (GtkWidget *widget,
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GtkStateType state);
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static void gtk_label_style_set (GtkWidget *widget,
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GtkStyle *previous_style);
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static void gtk_label_direction_changed (GtkWidget *widget,
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GtkTextDirection previous_dir);
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static gint gtk_label_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static gboolean gtk_label_focus (GtkWidget *widget,
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GtkDirectionType direction);
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static void gtk_label_realize (GtkWidget *widget);
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static void gtk_label_unrealize (GtkWidget *widget);
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static void gtk_label_map (GtkWidget *widget);
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static void gtk_label_unmap (GtkWidget *widget);
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static gboolean gtk_label_button_press (GtkWidget *widget,
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GdkEventButton *event);
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static gboolean gtk_label_button_release (GtkWidget *widget,
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GdkEventButton *event);
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static gboolean gtk_label_motion (GtkWidget *widget,
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GdkEventMotion *event);
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static gboolean gtk_label_leave_notify (GtkWidget *widget,
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GdkEventCrossing *event);
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static void gtk_label_grab_focus (GtkWidget *widget);
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static gboolean gtk_label_query_tooltip (GtkWidget *widget,
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gint x,
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gint y,
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gboolean keyboard_tip,
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GtkTooltip *tooltip);
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static void gtk_label_set_text_internal (GtkLabel *label,
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gchar *str);
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static void gtk_label_set_label_internal (GtkLabel *label,
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gchar *str);
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static void gtk_label_set_use_markup_internal (GtkLabel *label,
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gboolean val);
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static void gtk_label_set_use_underline_internal (GtkLabel *label,
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gboolean val);
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static void gtk_label_set_attributes_internal (GtkLabel *label,
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PangoAttrList *attrs);
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static void gtk_label_set_uline_text_internal (GtkLabel *label,
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const gchar *str);
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static void gtk_label_set_pattern_internal (GtkLabel *label,
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const gchar *pattern,
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gboolean is_mnemonic);
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static void gtk_label_set_markup_internal (GtkLabel *label,
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const gchar *str,
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gboolean with_uline);
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static void gtk_label_recalculate (GtkLabel *label);
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static void gtk_label_hierarchy_changed (GtkWidget *widget,
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GtkWidget *old_toplevel);
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static void gtk_label_screen_changed (GtkWidget *widget,
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GdkScreen *old_screen);
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static gboolean gtk_label_popup_menu (GtkWidget *widget);
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static void gtk_label_create_window (GtkLabel *label);
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static void gtk_label_destroy_window (GtkLabel *label);
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static void gtk_label_ensure_select_info (GtkLabel *label);
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static void gtk_label_clear_select_info (GtkLabel *label);
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static void gtk_label_update_cursor (GtkLabel *label);
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static void gtk_label_clear_layout (GtkLabel *label);
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static void gtk_label_ensure_layout (GtkLabel *label, gboolean guess_wrap_width);
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static void gtk_label_invalidate_wrap_width (GtkLabel *label);
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static void gtk_label_select_region_index (GtkLabel *label,
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gint anchor_index,
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gint end_index);
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static gboolean gtk_label_mnemonic_activate (GtkWidget *widget,
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gboolean group_cycling);
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static void gtk_label_setup_mnemonic (GtkLabel *label,
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guint last_key);
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static void gtk_label_drag_data_get (GtkWidget *widget,
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GdkDragContext *context,
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GtkSelectionData *selection_data,
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guint info,
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guint time);
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static void gtk_label_buildable_interface_init (GtkBuildableIface *iface);
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static gboolean gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *tagname,
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GMarkupParser *parser,
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gpointer *data);
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static void gtk_label_buildable_custom_finished (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *tagname,
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gpointer user_data);
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static void connect_mnemonics_visible_notify (GtkLabel *label);
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static gboolean separate_uline_pattern (const gchar *str,
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guint *accel_key,
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gchar **new_str,
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gchar **pattern);
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/* For selectable labels: */
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static void gtk_label_move_cursor (GtkLabel *label,
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GtkMovementStep step,
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gint count,
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gboolean extend_selection);
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static void gtk_label_copy_clipboard (GtkLabel *label);
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static void gtk_label_select_all (GtkLabel *label);
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static void gtk_label_do_popup (GtkLabel *label,
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GdkEventButton *event);
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static gint gtk_label_move_forward_word (GtkLabel *label,
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gint start);
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static gint gtk_label_move_backward_word (GtkLabel *label,
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gint start);
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/* For links: */
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static void gtk_label_rescan_links (GtkLabel *label);
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static void gtk_label_clear_links (GtkLabel *label);
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static gboolean gtk_label_activate_link (GtkLabel *label,
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const gchar *uri);
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static void gtk_label_activate_current_link (GtkLabel *label);
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static GtkLabelLink *gtk_label_get_current_link (GtkLabel *label);
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static void gtk_label_get_link_colors (GtkWidget *widget,
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GdkColor **link_color,
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GdkColor **visited_link_color);
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static void emit_activate_link (GtkLabel *label,
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GtkLabelLink *link);
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static void gtk_label_size_request_init (GtkSizeRequestIface *iface);
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static GtkSizeRequestMode gtk_label_get_request_mode (GtkSizeRequest *widget);
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static void gtk_label_get_width (GtkSizeRequest *widget,
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gint *minimum_size,
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gint *natural_size);
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static void gtk_label_get_height (GtkSizeRequest *widget,
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gint *minimum_size,
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gint *natural_size);
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static void gtk_label_get_width_for_height (GtkSizeRequest *widget,
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gint height,
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gint *minimum_width,
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gint *natural_width);
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static void gtk_label_get_height_for_width (GtkSizeRequest *widget,
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gint width,
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gint *minimum_height,
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gint *natural_height);
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static GQuark quark_angle = 0;
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static GtkBuildableIface *buildable_parent_iface = NULL;
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G_DEFINE_TYPE_WITH_CODE (GtkLabel, gtk_label, GTK_TYPE_MISC,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
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gtk_label_buildable_interface_init)
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G_IMPLEMENT_INTERFACE (GTK_TYPE_SIZE_REQUEST,
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gtk_label_size_request_init));
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static void
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add_move_binding (GtkBindingSet *binding_set,
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guint keyval,
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guint modmask,
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GtkMovementStep step,
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gint count)
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{
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g_return_if_fail ((modmask & GDK_SHIFT_MASK) == 0);
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gtk_binding_entry_add_signal (binding_set, keyval, modmask,
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"move-cursor", 3,
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G_TYPE_ENUM, step,
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G_TYPE_INT, count,
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G_TYPE_BOOLEAN, FALSE);
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/* Selection-extending version */
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gtk_binding_entry_add_signal (binding_set, keyval, modmask | GDK_SHIFT_MASK,
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"move-cursor", 3,
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G_TYPE_ENUM, step,
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G_TYPE_INT, count,
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G_TYPE_BOOLEAN, TRUE);
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}
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static void
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gtk_label_class_init (GtkLabelClass *class)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (class);
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GtkObjectClass *object_class = GTK_OBJECT_CLASS (class);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
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GtkBindingSet *binding_set;
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quark_angle = g_quark_from_static_string ("angle");
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gobject_class->set_property = gtk_label_set_property;
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gobject_class->get_property = gtk_label_get_property;
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gobject_class->finalize = gtk_label_finalize;
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object_class->destroy = gtk_label_destroy;
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widget_class->size_allocate = gtk_label_size_allocate;
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widget_class->state_changed = gtk_label_state_changed;
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widget_class->style_set = gtk_label_style_set;
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widget_class->query_tooltip = gtk_label_query_tooltip;
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widget_class->direction_changed = gtk_label_direction_changed;
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widget_class->expose_event = gtk_label_expose;
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widget_class->realize = gtk_label_realize;
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widget_class->unrealize = gtk_label_unrealize;
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widget_class->map = gtk_label_map;
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widget_class->unmap = gtk_label_unmap;
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widget_class->button_press_event = gtk_label_button_press;
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widget_class->button_release_event = gtk_label_button_release;
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widget_class->motion_notify_event = gtk_label_motion;
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widget_class->leave_notify_event = gtk_label_leave_notify;
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widget_class->hierarchy_changed = gtk_label_hierarchy_changed;
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widget_class->screen_changed = gtk_label_screen_changed;
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widget_class->mnemonic_activate = gtk_label_mnemonic_activate;
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widget_class->drag_data_get = gtk_label_drag_data_get;
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widget_class->grab_focus = gtk_label_grab_focus;
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widget_class->popup_menu = gtk_label_popup_menu;
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widget_class->focus = gtk_label_focus;
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class->move_cursor = gtk_label_move_cursor;
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class->copy_clipboard = gtk_label_copy_clipboard;
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class->activate_link = gtk_label_activate_link;
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/**
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* GtkLabel::move-cursor:
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* @entry: the object which received the signal
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* @step: the granularity of the move, as a #GtkMovementStep
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* @count: the number of @step units to move
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* @extend_selection: %TRUE if the move should extend the selection
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*
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* The ::move-cursor signal is a
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* <link linkend="keybinding-signals">keybinding signal</link>
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* which gets emitted when the user initiates a cursor movement.
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* If the cursor is not visible in @entry, this signal causes
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* the viewport to be moved instead.
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*
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* Applications should not connect to it, but may emit it with
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* g_signal_emit_by_name() if they need to control the cursor
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* programmatically.
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*
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* The default bindings for this signal come in two variants,
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* the variant with the Shift modifier extends the selection,
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* the variant without the Shift modifer does not.
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* There are too many key combinations to list them all here.
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* <itemizedlist>
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* <listitem>Arrow keys move by individual characters/lines</listitem>
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* <listitem>Ctrl-arrow key combinations move by words/paragraphs</listitem>
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* <listitem>Home/End keys move to the ends of the buffer</listitem>
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* </itemizedlist>
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*/
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signals[MOVE_CURSOR] =
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g_signal_new (I_("move-cursor"),
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G_OBJECT_CLASS_TYPE (gobject_class),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (GtkLabelClass, move_cursor),
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NULL, NULL,
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_gtk_marshal_VOID__ENUM_INT_BOOLEAN,
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G_TYPE_NONE, 3,
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GTK_TYPE_MOVEMENT_STEP,
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G_TYPE_INT,
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G_TYPE_BOOLEAN);
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/**
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* GtkLabel::copy-clipboard:
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* @label: the object which received the signal
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*
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* The ::copy-clipboard signal is a
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* <link linkend="keybinding-signals">keybinding signal</link>
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* which gets emitted to copy the selection to the clipboard.
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*
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* The default binding for this signal is Ctrl-c.
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*/
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signals[COPY_CLIPBOARD] =
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g_signal_new (I_("copy-clipboard"),
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G_OBJECT_CLASS_TYPE (gobject_class),
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G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
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G_STRUCT_OFFSET (GtkLabelClass, copy_clipboard),
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NULL, NULL,
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_gtk_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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|
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/**
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* GtkLabel::populate-popup:
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|
* @label: The label on which the signal is emitted
|
|
* @menu: the menu that is being populated
|
|
*
|
|
* The ::populate-popup signal gets emitted before showing the
|
|
* context menu of the label. Note that only selectable labels
|
|
* have context menus.
|
|
*
|
|
* If you need to add items to the context menu, connect
|
|
* to this signal and append your menuitems to the @menu.
|
|
*/
|
|
signals[POPULATE_POPUP] =
|
|
g_signal_new (I_("populate-popup"),
|
|
G_OBJECT_CLASS_TYPE (gobject_class),
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GtkLabelClass, populate_popup),
|
|
NULL, NULL,
|
|
_gtk_marshal_VOID__OBJECT,
|
|
G_TYPE_NONE, 1,
|
|
GTK_TYPE_MENU);
|
|
|
|
/**
|
|
* GtkLabel::activate-current-link:
|
|
* @label: The label on which the signal was emitted
|
|
*
|
|
* A <link linkend="keybinding-signals">keybinding signal</link>
|
|
* which gets emitted when the user activates a link in the label.
|
|
*
|
|
* Applications may also emit the signal with g_signal_emit_by_name()
|
|
* if they need to control activation of URIs programmatically.
|
|
*
|
|
* The default bindings for this signal are all forms of the Enter key.
|
|
*
|
|
* Since: 2.18
|
|
*/
|
|
signals[ACTIVATE_CURRENT_LINK] =
|
|
g_signal_new_class_handler ("activate-current-link",
|
|
G_TYPE_FROM_CLASS (object_class),
|
|
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
|
|
G_CALLBACK (gtk_label_activate_current_link),
|
|
NULL, NULL,
|
|
_gtk_marshal_VOID__VOID,
|
|
G_TYPE_NONE, 0);
|
|
|
|
/**
|
|
* GtkLabel::activate-link:
|
|
* @label: The label on which the signal was emitted
|
|
* @uri: the URI that is activated
|
|
*
|
|
* The signal which gets emitted to activate a URI.
|
|
* Applications may connect to it to override the default behaviour,
|
|
* which is to call gtk_show_uri().
|
|
*
|
|
* Returns: %TRUE if the link has been activated
|
|
*
|
|
* Since: 2.18
|
|
*/
|
|
signals[ACTIVATE_LINK] =
|
|
g_signal_new ("activate-link",
|
|
G_TYPE_FROM_CLASS (object_class),
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GtkLabelClass, activate_link),
|
|
_gtk_boolean_handled_accumulator, NULL,
|
|
_gtk_marshal_BOOLEAN__STRING,
|
|
G_TYPE_BOOLEAN, 1, G_TYPE_STRING);
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_LABEL,
|
|
g_param_spec_string ("label",
|
|
P_("Label"),
|
|
P_("The text of the label"),
|
|
"",
|
|
GTK_PARAM_READWRITE));
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_ATTRIBUTES,
|
|
g_param_spec_boxed ("attributes",
|
|
P_("Attributes"),
|
|
P_("A list of style attributes to apply to the text of the label"),
|
|
PANGO_TYPE_ATTR_LIST,
|
|
GTK_PARAM_READWRITE));
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_USE_MARKUP,
|
|
g_param_spec_boolean ("use-markup",
|
|
P_("Use markup"),
|
|
P_("The text of the label includes XML markup. See pango_parse_markup()"),
|
|
FALSE,
|
|
GTK_PARAM_READWRITE));
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_USE_UNDERLINE,
|
|
g_param_spec_boolean ("use-underline",
|
|
P_("Use underline"),
|
|
P_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"),
|
|
FALSE,
|
|
GTK_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_JUSTIFY,
|
|
g_param_spec_enum ("justify",
|
|
P_("Justification"),
|
|
P_("The alignment of the lines in the text of the label relative to each other. This does NOT affect the alignment of the label within its allocation. See GtkMisc::xalign for that"),
|
|
GTK_TYPE_JUSTIFICATION,
|
|
GTK_JUSTIFY_LEFT,
|
|
GTK_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_PATTERN,
|
|
g_param_spec_string ("pattern",
|
|
P_("Pattern"),
|
|
P_("A string with _ characters in positions correspond to characters in the text to underline"),
|
|
NULL,
|
|
GTK_PARAM_WRITABLE));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_WRAP,
|
|
g_param_spec_boolean ("wrap",
|
|
P_("Line wrap"),
|
|
P_("If set, wrap lines if the text becomes too wide"),
|
|
FALSE,
|
|
GTK_PARAM_READWRITE));
|
|
/**
|
|
* GtkLabel:wrap-mode:
|
|
*
|
|
* If line wrapping is on (see the #GtkLabel:wrap property) this controls
|
|
* how the line wrapping is done. The default is %PANGO_WRAP_WORD, which
|
|
* means wrap on word boundaries.
|
|
*
|
|
* Since: 2.10
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_WRAP_MODE,
|
|
g_param_spec_enum ("wrap-mode",
|
|
P_("Line wrap mode"),
|
|
P_("If wrap is set, controls how linewrapping is done"),
|
|
PANGO_TYPE_WRAP_MODE,
|
|
PANGO_WRAP_WORD,
|
|
GTK_PARAM_READWRITE));
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_SELECTABLE,
|
|
g_param_spec_boolean ("selectable",
|
|
P_("Selectable"),
|
|
P_("Whether the label text can be selected with the mouse"),
|
|
FALSE,
|
|
GTK_PARAM_READWRITE));
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_MNEMONIC_KEYVAL,
|
|
g_param_spec_uint ("mnemonic-keyval",
|
|
P_("Mnemonic key"),
|
|
P_("The mnemonic accelerator key for this label"),
|
|
0,
|
|
G_MAXUINT,
|
|
GDK_VoidSymbol,
|
|
GTK_PARAM_READABLE));
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_MNEMONIC_WIDGET,
|
|
g_param_spec_object ("mnemonic-widget",
|
|
P_("Mnemonic widget"),
|
|
P_("The widget to be activated when the label's mnemonic "
|
|
"key is pressed"),
|
|
GTK_TYPE_WIDGET,
|
|
GTK_PARAM_READWRITE));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_CURSOR_POSITION,
|
|
g_param_spec_int ("cursor-position",
|
|
P_("Cursor Position"),
|
|
P_("The current position of the insertion cursor in chars"),
|
|
0,
|
|
G_MAXINT,
|
|
0,
|
|
GTK_PARAM_READABLE));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_SELECTION_BOUND,
|
|
g_param_spec_int ("selection-bound",
|
|
P_("Selection Bound"),
|
|
P_("The position of the opposite end of the selection from the cursor in chars"),
|
|
0,
|
|
G_MAXINT,
|
|
0,
|
|
GTK_PARAM_READABLE));
|
|
|
|
/**
|
|
* GtkLabel:ellipsize:
|
|
*
|
|
* The preferred place to ellipsize the string, if the label does
|
|
* not have enough room to display the entire string, specified as a
|
|
* #PangoEllisizeMode.
|
|
*
|
|
* Note that setting this property to a value other than
|
|
* %PANGO_ELLIPSIZE_NONE has the side-effect that the label requests
|
|
* only enough space to display the ellipsis "...". In particular, this
|
|
* means that ellipsizing labels do not work well in notebook tabs, unless
|
|
* the tab's #GtkNotebook:tab-expand property is set to %TRUE. Other ways
|
|
* to set a label's width are gtk_widget_set_size_request() and
|
|
* gtk_label_set_width_chars().
|
|
*
|
|
* Since: 2.6
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_ELLIPSIZE,
|
|
g_param_spec_enum ("ellipsize",
|
|
P_("Ellipsize"),
|
|
P_("The preferred place to ellipsize the string, if the label does not have enough room to display the entire string"),
|
|
PANGO_TYPE_ELLIPSIZE_MODE,
|
|
PANGO_ELLIPSIZE_NONE,
|
|
GTK_PARAM_READWRITE));
|
|
|
|
/**
|
|
* GtkLabel:width-chars:
|
|
*
|
|
* The desired width of the label, in characters. If this property is set to
|
|
* -1, the width will be calculated automatically.
|
|
*
|
|
* See the section on <link linkend="label-text-layout">text layout</link>
|
|
* for details of how #GtkLabel:width-chars and #GtkLabel:max-width-chars
|
|
* determine the width of ellipsized and wrapped labels.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_WIDTH_CHARS,
|
|
g_param_spec_int ("width-chars",
|
|
P_("Width In Characters"),
|
|
P_("The desired width of the label, in characters"),
|
|
-1,
|
|
G_MAXINT,
|
|
-1,
|
|
GTK_PARAM_READWRITE));
|
|
|
|
/**
|
|
* GtkLabel:single-line-mode:
|
|
*
|
|
* Whether the label is in single line mode. In single line mode,
|
|
* the height of the label does not depend on the actual text, it
|
|
* is always set to ascent + descent of the font. This can be an
|
|
* advantage in situations where resizing the label because of text
|
|
* changes would be distracting, e.g. in a statusbar.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_SINGLE_LINE_MODE,
|
|
g_param_spec_boolean ("single-line-mode",
|
|
P_("Single Line Mode"),
|
|
P_("Whether the label is in single line mode"),
|
|
FALSE,
|
|
GTK_PARAM_READWRITE));
|
|
|
|
/**
|
|
* GtkLabel:angle:
|
|
*
|
|
* The angle that the baseline of the label makes with the horizontal,
|
|
* in degrees, measured counterclockwise. An angle of 90 reads from
|
|
* from bottom to top, an angle of 270, from top to bottom. Ignored
|
|
* if the label is selectable, wrapped, or ellipsized.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_ANGLE,
|
|
g_param_spec_double ("angle",
|
|
P_("Angle"),
|
|
P_("Angle at which the label is rotated"),
|
|
0.0,
|
|
360.0,
|
|
0.0,
|
|
GTK_PARAM_READWRITE));
|
|
|
|
/**
|
|
* GtkLabel:max-width-chars:
|
|
*
|
|
* The desired maximum width of the label, in characters. If this property
|
|
* is set to -1, the width will be calculated automatically.
|
|
*
|
|
* See the section on <link linkend="label-text-layout">text layout</link>
|
|
* for details of how #GtkLabel:width-chars and #GtkLabel:max-width-chars
|
|
* determine the width of ellipsized and wrapped labels.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_MAX_WIDTH_CHARS,
|
|
g_param_spec_int ("max-width-chars",
|
|
P_("Maximum Width In Characters"),
|
|
P_("The desired maximum width of the label, in characters"),
|
|
-1,
|
|
G_MAXINT,
|
|
-1,
|
|
GTK_PARAM_READWRITE));
|
|
|
|
/**
|
|
* GtkLabel:track-visited-links:
|
|
*
|
|
* Set this property to %TRUE to make the label track which links
|
|
* have been clicked. It will then apply the ::visited-link-color
|
|
* color, instead of ::link-color.
|
|
*
|
|
* Since: 2.18
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_TRACK_VISITED_LINKS,
|
|
g_param_spec_boolean ("track-visited-links",
|
|
P_("Track visited links"),
|
|
P_("Whether visited links should be tracked"),
|
|
TRUE,
|
|
GTK_PARAM_READWRITE));
|
|
/*
|
|
* Key bindings
|
|
*/
|
|
|
|
binding_set = gtk_binding_set_by_class (class);
|
|
|
|
/* Moving the insertion point */
|
|
add_move_binding (binding_set, GDK_Right, 0,
|
|
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
|
|
|
|
add_move_binding (binding_set, GDK_Left, 0,
|
|
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
|
|
|
|
add_move_binding (binding_set, GDK_KP_Right, 0,
|
|
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
|
|
|
|
add_move_binding (binding_set, GDK_KP_Left, 0,
|
|
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
|
|
|
|
add_move_binding (binding_set, GDK_f, GDK_CONTROL_MASK,
|
|
GTK_MOVEMENT_LOGICAL_POSITIONS, 1);
|
|
|
|
add_move_binding (binding_set, GDK_b, GDK_CONTROL_MASK,
|
|
GTK_MOVEMENT_LOGICAL_POSITIONS, -1);
|
|
|
|
add_move_binding (binding_set, GDK_Right, GDK_CONTROL_MASK,
|
|
GTK_MOVEMENT_WORDS, 1);
|
|
|
|
add_move_binding (binding_set, GDK_Left, GDK_CONTROL_MASK,
|
|
GTK_MOVEMENT_WORDS, -1);
|
|
|
|
add_move_binding (binding_set, GDK_KP_Right, GDK_CONTROL_MASK,
|
|
GTK_MOVEMENT_WORDS, 1);
|
|
|
|
add_move_binding (binding_set, GDK_KP_Left, GDK_CONTROL_MASK,
|
|
GTK_MOVEMENT_WORDS, -1);
|
|
|
|
/* select all */
|
|
gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK,
|
|
"move-cursor", 3,
|
|
G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
|
|
G_TYPE_INT, -1,
|
|
G_TYPE_BOOLEAN, FALSE);
|
|
|
|
gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK,
|
|
"move-cursor", 3,
|
|
G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
|
|
G_TYPE_INT, 1,
|
|
G_TYPE_BOOLEAN, TRUE);
|
|
|
|
gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK,
|
|
"move-cursor", 3,
|
|
G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
|
|
G_TYPE_INT, -1,
|
|
G_TYPE_BOOLEAN, FALSE);
|
|
|
|
gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK,
|
|
"move-cursor", 3,
|
|
G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
|
|
G_TYPE_INT, 1,
|
|
G_TYPE_BOOLEAN, TRUE);
|
|
|
|
/* unselect all */
|
|
gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
|
|
"move-cursor", 3,
|
|
G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
|
|
G_TYPE_INT, 0,
|
|
G_TYPE_BOOLEAN, FALSE);
|
|
|
|
gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_CONTROL_MASK,
|
|
"move-cursor", 3,
|
|
G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
|
|
G_TYPE_INT, 0,
|
|
G_TYPE_BOOLEAN, FALSE);
|
|
|
|
add_move_binding (binding_set, GDK_f, GDK_MOD1_MASK,
|
|
GTK_MOVEMENT_WORDS, 1);
|
|
|
|
add_move_binding (binding_set, GDK_b, GDK_MOD1_MASK,
|
|
GTK_MOVEMENT_WORDS, -1);
|
|
|
|
add_move_binding (binding_set, GDK_Home, 0,
|
|
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
|
|
|
|
add_move_binding (binding_set, GDK_End, 0,
|
|
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
|
|
|
|
add_move_binding (binding_set, GDK_KP_Home, 0,
|
|
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
|
|
|
|
add_move_binding (binding_set, GDK_KP_End, 0,
|
|
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
|
|
|
|
add_move_binding (binding_set, GDK_Home, GDK_CONTROL_MASK,
|
|
GTK_MOVEMENT_BUFFER_ENDS, -1);
|
|
|
|
add_move_binding (binding_set, GDK_End, GDK_CONTROL_MASK,
|
|
GTK_MOVEMENT_BUFFER_ENDS, 1);
|
|
|
|
add_move_binding (binding_set, GDK_KP_Home, GDK_CONTROL_MASK,
|
|
GTK_MOVEMENT_BUFFER_ENDS, -1);
|
|
|
|
add_move_binding (binding_set, GDK_KP_End, GDK_CONTROL_MASK,
|
|
GTK_MOVEMENT_BUFFER_ENDS, 1);
|
|
|
|
/* copy */
|
|
gtk_binding_entry_add_signal (binding_set, GDK_c, GDK_CONTROL_MASK,
|
|
"copy-clipboard", 0);
|
|
|
|
gtk_binding_entry_add_signal (binding_set, GDK_Return, 0,
|
|
"activate-current-link", 0);
|
|
gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0,
|
|
"activate-current-link", 0);
|
|
gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0,
|
|
"activate-current-link", 0);
|
|
|
|
gtk_settings_install_property (g_param_spec_boolean ("gtk-label-select-on-focus",
|
|
P_("Select on focus"),
|
|
P_("Whether to select the contents of a selectable label when it is focused"),
|
|
TRUE,
|
|
GTK_PARAM_READWRITE));
|
|
|
|
|
|
g_type_class_add_private (class, sizeof (GtkLabelPrivate));
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_LABEL:
|
|
gtk_label_set_label (label, g_value_get_string (value));
|
|
break;
|
|
case PROP_ATTRIBUTES:
|
|
gtk_label_set_attributes (label, g_value_get_boxed (value));
|
|
break;
|
|
case PROP_USE_MARKUP:
|
|
gtk_label_set_use_markup (label, g_value_get_boolean (value));
|
|
break;
|
|
case PROP_USE_UNDERLINE:
|
|
gtk_label_set_use_underline (label, g_value_get_boolean (value));
|
|
break;
|
|
case PROP_JUSTIFY:
|
|
gtk_label_set_justify (label, g_value_get_enum (value));
|
|
break;
|
|
case PROP_PATTERN:
|
|
gtk_label_set_pattern (label, g_value_get_string (value));
|
|
break;
|
|
case PROP_WRAP:
|
|
gtk_label_set_line_wrap (label, g_value_get_boolean (value));
|
|
break;
|
|
case PROP_WRAP_MODE:
|
|
gtk_label_set_line_wrap_mode (label, g_value_get_enum (value));
|
|
break;
|
|
case PROP_SELECTABLE:
|
|
gtk_label_set_selectable (label, g_value_get_boolean (value));
|
|
break;
|
|
case PROP_MNEMONIC_WIDGET:
|
|
gtk_label_set_mnemonic_widget (label, (GtkWidget*) g_value_get_object (value));
|
|
break;
|
|
case PROP_ELLIPSIZE:
|
|
gtk_label_set_ellipsize (label, g_value_get_enum (value));
|
|
break;
|
|
case PROP_WIDTH_CHARS:
|
|
gtk_label_set_width_chars (label, g_value_get_int (value));
|
|
break;
|
|
case PROP_SINGLE_LINE_MODE:
|
|
gtk_label_set_single_line_mode (label, g_value_get_boolean (value));
|
|
break;
|
|
case PROP_ANGLE:
|
|
gtk_label_set_angle (label, g_value_get_double (value));
|
|
break;
|
|
case PROP_MAX_WIDTH_CHARS:
|
|
gtk_label_set_max_width_chars (label, g_value_get_int (value));
|
|
break;
|
|
case PROP_TRACK_VISITED_LINKS:
|
|
gtk_label_set_track_visited_links (label, g_value_get_boolean (value));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_LABEL:
|
|
g_value_set_string (value, label->label);
|
|
break;
|
|
case PROP_ATTRIBUTES:
|
|
g_value_set_boxed (value, label->attrs);
|
|
break;
|
|
case PROP_USE_MARKUP:
|
|
g_value_set_boolean (value, label->use_markup);
|
|
break;
|
|
case PROP_USE_UNDERLINE:
|
|
g_value_set_boolean (value, label->use_underline);
|
|
break;
|
|
case PROP_JUSTIFY:
|
|
g_value_set_enum (value, label->jtype);
|
|
break;
|
|
case PROP_WRAP:
|
|
g_value_set_boolean (value, label->wrap);
|
|
break;
|
|
case PROP_WRAP_MODE:
|
|
g_value_set_enum (value, label->wrap_mode);
|
|
break;
|
|
case PROP_SELECTABLE:
|
|
g_value_set_boolean (value, gtk_label_get_selectable (label));
|
|
break;
|
|
case PROP_MNEMONIC_KEYVAL:
|
|
g_value_set_uint (value, label->mnemonic_keyval);
|
|
break;
|
|
case PROP_MNEMONIC_WIDGET:
|
|
g_value_set_object (value, (GObject*) label->mnemonic_widget);
|
|
break;
|
|
case PROP_CURSOR_POSITION:
|
|
if (label->select_info && label->select_info->selectable)
|
|
{
|
|
gint offset = g_utf8_pointer_to_offset (label->text,
|
|
label->text + label->select_info->selection_end);
|
|
g_value_set_int (value, offset);
|
|
}
|
|
else
|
|
g_value_set_int (value, 0);
|
|
break;
|
|
case PROP_SELECTION_BOUND:
|
|
if (label->select_info && label->select_info->selectable)
|
|
{
|
|
gint offset = g_utf8_pointer_to_offset (label->text,
|
|
label->text + label->select_info->selection_anchor);
|
|
g_value_set_int (value, offset);
|
|
}
|
|
else
|
|
g_value_set_int (value, 0);
|
|
break;
|
|
case PROP_ELLIPSIZE:
|
|
g_value_set_enum (value, label->ellipsize);
|
|
break;
|
|
case PROP_WIDTH_CHARS:
|
|
g_value_set_int (value, gtk_label_get_width_chars (label));
|
|
break;
|
|
case PROP_SINGLE_LINE_MODE:
|
|
g_value_set_boolean (value, gtk_label_get_single_line_mode (label));
|
|
break;
|
|
case PROP_ANGLE:
|
|
g_value_set_double (value, gtk_label_get_angle (label));
|
|
break;
|
|
case PROP_MAX_WIDTH_CHARS:
|
|
g_value_set_int (value, gtk_label_get_max_width_chars (label));
|
|
break;
|
|
case PROP_TRACK_VISITED_LINKS:
|
|
g_value_set_boolean (value, gtk_label_get_track_visited_links (label));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_init (GtkLabel *label)
|
|
{
|
|
GtkLabelPrivate *priv;
|
|
|
|
gtk_widget_set_has_window (GTK_WIDGET (label), FALSE);
|
|
|
|
priv = GTK_LABEL_GET_PRIVATE (label);
|
|
priv->width_chars = -1;
|
|
priv->max_width_chars = -1;
|
|
priv->wrap_width = -1;
|
|
label->label = NULL;
|
|
|
|
label->jtype = GTK_JUSTIFY_LEFT;
|
|
label->wrap = FALSE;
|
|
label->wrap_mode = PANGO_WRAP_WORD;
|
|
label->ellipsize = PANGO_ELLIPSIZE_NONE;
|
|
|
|
label->use_underline = FALSE;
|
|
label->use_markup = FALSE;
|
|
label->pattern_set = FALSE;
|
|
label->track_links = TRUE;
|
|
|
|
label->mnemonic_keyval = GDK_VoidSymbol;
|
|
label->layout = NULL;
|
|
label->text = NULL;
|
|
label->attrs = NULL;
|
|
|
|
label->mnemonic_widget = NULL;
|
|
label->mnemonic_window = NULL;
|
|
|
|
priv->mnemonics_visible = TRUE;
|
|
|
|
gtk_label_set_text (label, "");
|
|
}
|
|
|
|
|
|
static void
|
|
gtk_label_buildable_interface_init (GtkBuildableIface *iface)
|
|
{
|
|
buildable_parent_iface = g_type_interface_peek_parent (iface);
|
|
|
|
iface->custom_tag_start = gtk_label_buildable_custom_tag_start;
|
|
iface->custom_finished = gtk_label_buildable_custom_finished;
|
|
}
|
|
|
|
typedef struct {
|
|
GtkBuilder *builder;
|
|
GObject *object;
|
|
PangoAttrList *attrs;
|
|
} PangoParserData;
|
|
|
|
static PangoAttribute *
|
|
attribute_from_text (GtkBuilder *builder,
|
|
const gchar *name,
|
|
const gchar *value,
|
|
GError **error)
|
|
{
|
|
PangoAttribute *attribute = NULL;
|
|
PangoAttrType type;
|
|
PangoLanguage *language;
|
|
PangoFontDescription *font_desc;
|
|
GdkColor *color;
|
|
GValue val = { 0, };
|
|
|
|
if (!gtk_builder_value_from_string_type (builder, PANGO_TYPE_ATTR_TYPE, name, &val, error))
|
|
return NULL;
|
|
|
|
type = g_value_get_enum (&val);
|
|
g_value_unset (&val);
|
|
|
|
switch (type)
|
|
{
|
|
/* PangoAttrLanguage */
|
|
case PANGO_ATTR_LANGUAGE:
|
|
if ((language = pango_language_from_string (value)))
|
|
{
|
|
attribute = pango_attr_language_new (language);
|
|
g_value_init (&val, G_TYPE_INT);
|
|
}
|
|
break;
|
|
/* PangoAttrInt */
|
|
case PANGO_ATTR_STYLE:
|
|
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STYLE, value, &val, error))
|
|
attribute = pango_attr_style_new (g_value_get_enum (&val));
|
|
break;
|
|
case PANGO_ATTR_WEIGHT:
|
|
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_WEIGHT, value, &val, error))
|
|
attribute = pango_attr_weight_new (g_value_get_enum (&val));
|
|
break;
|
|
case PANGO_ATTR_VARIANT:
|
|
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_VARIANT, value, &val, error))
|
|
attribute = pango_attr_variant_new (g_value_get_enum (&val));
|
|
break;
|
|
case PANGO_ATTR_STRETCH:
|
|
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STRETCH, value, &val, error))
|
|
attribute = pango_attr_stretch_new (g_value_get_enum (&val));
|
|
break;
|
|
case PANGO_ATTR_UNDERLINE:
|
|
if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
|
|
attribute = pango_attr_underline_new (g_value_get_boolean (&val));
|
|
break;
|
|
case PANGO_ATTR_STRIKETHROUGH:
|
|
if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
|
|
attribute = pango_attr_strikethrough_new (g_value_get_boolean (&val));
|
|
break;
|
|
case PANGO_ATTR_GRAVITY:
|
|
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY, value, &val, error))
|
|
attribute = pango_attr_gravity_new (g_value_get_enum (&val));
|
|
break;
|
|
case PANGO_ATTR_GRAVITY_HINT:
|
|
if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY_HINT,
|
|
value, &val, error))
|
|
attribute = pango_attr_gravity_hint_new (g_value_get_enum (&val));
|
|
break;
|
|
/* PangoAttrString */
|
|
case PANGO_ATTR_FAMILY:
|
|
attribute = pango_attr_family_new (value);
|
|
g_value_init (&val, G_TYPE_INT);
|
|
break;
|
|
|
|
/* PangoAttrSize */
|
|
case PANGO_ATTR_SIZE:
|
|
if (gtk_builder_value_from_string_type (builder, G_TYPE_INT,
|
|
value, &val, error))
|
|
attribute = pango_attr_size_new (g_value_get_int (&val));
|
|
break;
|
|
case PANGO_ATTR_ABSOLUTE_SIZE:
|
|
if (gtk_builder_value_from_string_type (builder, G_TYPE_INT,
|
|
value, &val, error))
|
|
attribute = pango_attr_size_new_absolute (g_value_get_int (&val));
|
|
break;
|
|
|
|
/* PangoAttrFontDesc */
|
|
case PANGO_ATTR_FONT_DESC:
|
|
if ((font_desc = pango_font_description_from_string (value)))
|
|
{
|
|
attribute = pango_attr_font_desc_new (font_desc);
|
|
pango_font_description_free (font_desc);
|
|
g_value_init (&val, G_TYPE_INT);
|
|
}
|
|
break;
|
|
|
|
/* PangoAttrColor */
|
|
case PANGO_ATTR_FOREGROUND:
|
|
if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
|
|
value, &val, error))
|
|
{
|
|
color = g_value_get_boxed (&val);
|
|
attribute = pango_attr_foreground_new (color->red, color->green, color->blue);
|
|
}
|
|
break;
|
|
case PANGO_ATTR_BACKGROUND:
|
|
if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
|
|
value, &val, error))
|
|
{
|
|
color = g_value_get_boxed (&val);
|
|
attribute = pango_attr_background_new (color->red, color->green, color->blue);
|
|
}
|
|
break;
|
|
case PANGO_ATTR_UNDERLINE_COLOR:
|
|
if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
|
|
value, &val, error))
|
|
{
|
|
color = g_value_get_boxed (&val);
|
|
attribute = pango_attr_underline_color_new (color->red, color->green, color->blue);
|
|
}
|
|
break;
|
|
case PANGO_ATTR_STRIKETHROUGH_COLOR:
|
|
if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
|
|
value, &val, error))
|
|
{
|
|
color = g_value_get_boxed (&val);
|
|
attribute = pango_attr_strikethrough_color_new (color->red, color->green, color->blue);
|
|
}
|
|
break;
|
|
|
|
/* PangoAttrShape */
|
|
case PANGO_ATTR_SHAPE:
|
|
/* Unsupported for now */
|
|
break;
|
|
/* PangoAttrFloat */
|
|
case PANGO_ATTR_SCALE:
|
|
if (gtk_builder_value_from_string_type (builder, G_TYPE_DOUBLE,
|
|
value, &val, error))
|
|
attribute = pango_attr_scale_new (g_value_get_double (&val));
|
|
break;
|
|
|
|
case PANGO_ATTR_INVALID:
|
|
case PANGO_ATTR_LETTER_SPACING:
|
|
case PANGO_ATTR_RISE:
|
|
case PANGO_ATTR_FALLBACK:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
g_value_unset (&val);
|
|
|
|
return attribute;
|
|
}
|
|
|
|
|
|
static void
|
|
pango_start_element (GMarkupParseContext *context,
|
|
const gchar *element_name,
|
|
const gchar **names,
|
|
const gchar **values,
|
|
gpointer user_data,
|
|
GError **error)
|
|
{
|
|
PangoParserData *data = (PangoParserData*)user_data;
|
|
GValue val = { 0, };
|
|
guint i;
|
|
gint line_number, char_number;
|
|
|
|
if (strcmp (element_name, "attribute") == 0)
|
|
{
|
|
PangoAttribute *attr = NULL;
|
|
const gchar *name = NULL;
|
|
const gchar *value = NULL;
|
|
const gchar *start = NULL;
|
|
const gchar *end = NULL;
|
|
guint start_val = 0;
|
|
guint end_val = G_MAXUINT;
|
|
|
|
for (i = 0; names[i]; i++)
|
|
{
|
|
if (strcmp (names[i], "name") == 0)
|
|
name = values[i];
|
|
else if (strcmp (names[i], "value") == 0)
|
|
value = values[i];
|
|
else if (strcmp (names[i], "start") == 0)
|
|
start = values[i];
|
|
else if (strcmp (names[i], "end") == 0)
|
|
end = values[i];
|
|
else
|
|
{
|
|
g_markup_parse_context_get_position (context,
|
|
&line_number,
|
|
&char_number);
|
|
g_set_error (error,
|
|
GTK_BUILDER_ERROR,
|
|
GTK_BUILDER_ERROR_INVALID_ATTRIBUTE,
|
|
"%s:%d:%d '%s' is not a valid attribute of <%s>",
|
|
"<input>",
|
|
line_number, char_number, names[i], "attribute");
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (!name || !value)
|
|
{
|
|
g_markup_parse_context_get_position (context,
|
|
&line_number,
|
|
&char_number);
|
|
g_set_error (error,
|
|
GTK_BUILDER_ERROR,
|
|
GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
|
|
"%s:%d:%d <%s> requires attribute \"%s\"",
|
|
"<input>",
|
|
line_number, char_number, "attribute",
|
|
name ? "value" : "name");
|
|
return;
|
|
}
|
|
|
|
if (start)
|
|
{
|
|
if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT,
|
|
start, &val, error))
|
|
return;
|
|
start_val = g_value_get_uint (&val);
|
|
g_value_unset (&val);
|
|
}
|
|
|
|
if (end)
|
|
{
|
|
if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT,
|
|
end, &val, error))
|
|
return;
|
|
end_val = g_value_get_uint (&val);
|
|
g_value_unset (&val);
|
|
}
|
|
|
|
attr = attribute_from_text (data->builder, name, value, error);
|
|
attr->start_index = start_val;
|
|
attr->end_index = end_val;
|
|
|
|
if (attr)
|
|
{
|
|
if (!data->attrs)
|
|
data->attrs = pango_attr_list_new ();
|
|
|
|
pango_attr_list_insert (data->attrs, attr);
|
|
}
|
|
}
|
|
else if (strcmp (element_name, "attributes") == 0)
|
|
;
|
|
else
|
|
g_warning ("Unsupported tag for GtkLabel: %s\n", element_name);
|
|
}
|
|
|
|
static const GMarkupParser pango_parser =
|
|
{
|
|
pango_start_element,
|
|
};
|
|
|
|
static gboolean
|
|
gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
|
|
GtkBuilder *builder,
|
|
GObject *child,
|
|
const gchar *tagname,
|
|
GMarkupParser *parser,
|
|
gpointer *data)
|
|
{
|
|
if (buildable_parent_iface->custom_tag_start (buildable, builder, child,
|
|
tagname, parser, data))
|
|
return TRUE;
|
|
|
|
if (strcmp (tagname, "attributes") == 0)
|
|
{
|
|
PangoParserData *parser_data;
|
|
|
|
parser_data = g_slice_new0 (PangoParserData);
|
|
parser_data->builder = g_object_ref (builder);
|
|
parser_data->object = g_object_ref (buildable);
|
|
*parser = pango_parser;
|
|
*data = parser_data;
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_label_buildable_custom_finished (GtkBuildable *buildable,
|
|
GtkBuilder *builder,
|
|
GObject *child,
|
|
const gchar *tagname,
|
|
gpointer user_data)
|
|
{
|
|
PangoParserData *data;
|
|
|
|
buildable_parent_iface->custom_finished (buildable, builder, child,
|
|
tagname, user_data);
|
|
|
|
if (strcmp (tagname, "attributes") == 0)
|
|
{
|
|
data = (PangoParserData*)user_data;
|
|
|
|
if (data->attrs)
|
|
{
|
|
gtk_label_set_attributes (GTK_LABEL (buildable), data->attrs);
|
|
pango_attr_list_unref (data->attrs);
|
|
}
|
|
|
|
g_object_unref (data->object);
|
|
g_object_unref (data->builder);
|
|
g_slice_free (PangoParserData, data);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* gtk_label_new:
|
|
* @str: The text of the label
|
|
*
|
|
* Creates a new label with the given text inside it. You can
|
|
* pass %NULL to get an empty label widget.
|
|
*
|
|
* Return value: the new #GtkLabel
|
|
**/
|
|
GtkWidget*
|
|
gtk_label_new (const gchar *str)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = g_object_new (GTK_TYPE_LABEL, NULL);
|
|
|
|
if (str && *str)
|
|
gtk_label_set_text (label, str);
|
|
|
|
return GTK_WIDGET (label);
|
|
}
|
|
|
|
/**
|
|
* gtk_label_new_with_mnemonic:
|
|
* @str: The text of the label, with an underscore in front of the
|
|
* mnemonic character
|
|
*
|
|
* Creates a new #GtkLabel, containing the text in @str.
|
|
*
|
|
* If characters in @str are preceded by an underscore, they are
|
|
* underlined. If you need a literal underscore character in a label, use
|
|
* '__' (two underscores). The first underlined character represents a
|
|
* keyboard accelerator called a mnemonic. The mnemonic key can be used
|
|
* to activate another widget, chosen automatically, or explicitly using
|
|
* gtk_label_set_mnemonic_widget().
|
|
*
|
|
* If gtk_label_set_mnemonic_widget() is not called, then the first
|
|
* activatable ancestor of the #GtkLabel will be chosen as the mnemonic
|
|
* widget. For instance, if the label is inside a button or menu item,
|
|
* the button or menu item will automatically become the mnemonic widget
|
|
* and be activated by the mnemonic.
|
|
*
|
|
* Return value: the new #GtkLabel
|
|
**/
|
|
GtkWidget*
|
|
gtk_label_new_with_mnemonic (const gchar *str)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = g_object_new (GTK_TYPE_LABEL, NULL);
|
|
|
|
if (str && *str)
|
|
gtk_label_set_text_with_mnemonic (label, str);
|
|
|
|
return GTK_WIDGET (label);
|
|
}
|
|
|
|
static gboolean
|
|
gtk_label_mnemonic_activate (GtkWidget *widget,
|
|
gboolean group_cycling)
|
|
{
|
|
GtkWidget *parent;
|
|
|
|
if (GTK_LABEL (widget)->mnemonic_widget)
|
|
return gtk_widget_mnemonic_activate (GTK_LABEL (widget)->mnemonic_widget, group_cycling);
|
|
|
|
/* Try to find the widget to activate by traversing the
|
|
* widget's ancestry.
|
|
*/
|
|
parent = widget->parent;
|
|
|
|
if (GTK_IS_NOTEBOOK (parent))
|
|
return FALSE;
|
|
|
|
while (parent)
|
|
{
|
|
if (gtk_widget_get_can_focus (parent) ||
|
|
(!group_cycling && GTK_WIDGET_GET_CLASS (parent)->activate_signal) ||
|
|
GTK_IS_NOTEBOOK (parent->parent) ||
|
|
GTK_IS_MENU_ITEM (parent))
|
|
return gtk_widget_mnemonic_activate (parent, group_cycling);
|
|
parent = parent->parent;
|
|
}
|
|
|
|
/* barf if there was nothing to activate */
|
|
g_warning ("Couldn't find a target for a mnemonic activation.");
|
|
gtk_widget_error_bell (widget);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_label_setup_mnemonic (GtkLabel *label,
|
|
guint last_key)
|
|
{
|
|
GtkWidget *widget = GTK_WIDGET (label);
|
|
GtkWidget *toplevel;
|
|
GtkWidget *mnemonic_menu;
|
|
|
|
mnemonic_menu = g_object_get_data (G_OBJECT (label), "gtk-mnemonic-menu");
|
|
|
|
if (last_key != GDK_VoidSymbol)
|
|
{
|
|
if (label->mnemonic_window)
|
|
{
|
|
gtk_window_remove_mnemonic (label->mnemonic_window,
|
|
last_key,
|
|
widget);
|
|
label->mnemonic_window = NULL;
|
|
}
|
|
if (mnemonic_menu)
|
|
{
|
|
_gtk_menu_shell_remove_mnemonic (GTK_MENU_SHELL (mnemonic_menu),
|
|
last_key,
|
|
widget);
|
|
mnemonic_menu = NULL;
|
|
}
|
|
}
|
|
|
|
if (label->mnemonic_keyval == GDK_VoidSymbol)
|
|
goto done;
|
|
|
|
connect_mnemonics_visible_notify (GTK_LABEL (widget));
|
|
|
|
toplevel = gtk_widget_get_toplevel (widget);
|
|
if (gtk_widget_is_toplevel (toplevel))
|
|
{
|
|
GtkWidget *menu_shell;
|
|
|
|
menu_shell = gtk_widget_get_ancestor (widget,
|
|
GTK_TYPE_MENU_SHELL);
|
|
|
|
if (menu_shell)
|
|
{
|
|
_gtk_menu_shell_add_mnemonic (GTK_MENU_SHELL (menu_shell),
|
|
label->mnemonic_keyval,
|
|
widget);
|
|
mnemonic_menu = menu_shell;
|
|
}
|
|
|
|
if (!GTK_IS_MENU (menu_shell))
|
|
{
|
|
gtk_window_add_mnemonic (GTK_WINDOW (toplevel),
|
|
label->mnemonic_keyval,
|
|
widget);
|
|
label->mnemonic_window = GTK_WINDOW (toplevel);
|
|
}
|
|
}
|
|
|
|
done:
|
|
g_object_set_data (G_OBJECT (label), I_("gtk-mnemonic-menu"), mnemonic_menu);
|
|
}
|
|
|
|
static void
|
|
gtk_label_hierarchy_changed (GtkWidget *widget,
|
|
GtkWidget *old_toplevel)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
|
|
gtk_label_setup_mnemonic (label, label->mnemonic_keyval);
|
|
}
|
|
|
|
static void
|
|
label_shortcut_setting_apply (GtkLabel *label)
|
|
{
|
|
gtk_label_recalculate (label);
|
|
if (GTK_IS_ACCEL_LABEL (label))
|
|
gtk_accel_label_refetch (GTK_ACCEL_LABEL (label));
|
|
}
|
|
|
|
static void
|
|
label_shortcut_setting_traverse_container (GtkWidget *widget,
|
|
gpointer data)
|
|
{
|
|
if (GTK_IS_LABEL (widget))
|
|
label_shortcut_setting_apply (GTK_LABEL (widget));
|
|
else if (GTK_IS_CONTAINER (widget))
|
|
gtk_container_forall (GTK_CONTAINER (widget),
|
|
label_shortcut_setting_traverse_container, data);
|
|
}
|
|
|
|
static void
|
|
label_shortcut_setting_changed (GtkSettings *settings)
|
|
{
|
|
GList *list, *l;
|
|
|
|
list = gtk_window_list_toplevels ();
|
|
|
|
for (l = list; l ; l = l->next)
|
|
{
|
|
GtkWidget *widget = l->data;
|
|
|
|
if (gtk_widget_get_settings (widget) == settings)
|
|
gtk_container_forall (GTK_CONTAINER (widget),
|
|
label_shortcut_setting_traverse_container, NULL);
|
|
}
|
|
|
|
g_list_free (list);
|
|
}
|
|
|
|
static void
|
|
mnemonics_visible_apply (GtkWidget *widget,
|
|
gboolean mnemonics_visible)
|
|
{
|
|
GtkLabel *label;
|
|
GtkLabelPrivate *priv;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
priv = GTK_LABEL_GET_PRIVATE (label);
|
|
|
|
mnemonics_visible = mnemonics_visible != FALSE;
|
|
|
|
if (priv->mnemonics_visible != mnemonics_visible)
|
|
{
|
|
priv->mnemonics_visible = mnemonics_visible;
|
|
|
|
gtk_label_recalculate (label);
|
|
}
|
|
}
|
|
|
|
static void
|
|
label_mnemonics_visible_traverse_container (GtkWidget *widget,
|
|
gpointer data)
|
|
{
|
|
gboolean mnemonics_visible = GPOINTER_TO_INT (data);
|
|
|
|
_gtk_label_mnemonics_visible_apply_recursively (widget, mnemonics_visible);
|
|
}
|
|
|
|
void
|
|
_gtk_label_mnemonics_visible_apply_recursively (GtkWidget *widget,
|
|
gboolean mnemonics_visible)
|
|
{
|
|
if (GTK_IS_LABEL (widget))
|
|
mnemonics_visible_apply (widget, mnemonics_visible);
|
|
else if (GTK_IS_CONTAINER (widget))
|
|
gtk_container_forall (GTK_CONTAINER (widget),
|
|
label_mnemonics_visible_traverse_container,
|
|
GINT_TO_POINTER (mnemonics_visible));
|
|
}
|
|
|
|
static void
|
|
label_mnemonics_visible_changed (GtkWindow *window,
|
|
GParamSpec *pspec,
|
|
gpointer data)
|
|
{
|
|
gboolean mnemonics_visible;
|
|
|
|
g_object_get (window, "mnemonics-visible", &mnemonics_visible, NULL);
|
|
|
|
gtk_container_forall (GTK_CONTAINER (window),
|
|
label_mnemonics_visible_traverse_container,
|
|
GINT_TO_POINTER (mnemonics_visible));
|
|
}
|
|
|
|
static void
|
|
gtk_label_screen_changed (GtkWidget *widget,
|
|
GdkScreen *old_screen)
|
|
{
|
|
GtkSettings *settings;
|
|
gboolean shortcuts_connected;
|
|
|
|
if (!gtk_widget_has_screen (widget))
|
|
return;
|
|
|
|
settings = gtk_widget_get_settings (widget);
|
|
|
|
shortcuts_connected =
|
|
GPOINTER_TO_INT (g_object_get_data (G_OBJECT (settings),
|
|
"gtk-label-shortcuts-connected"));
|
|
|
|
if (! shortcuts_connected)
|
|
{
|
|
g_signal_connect (settings, "notify::gtk-enable-mnemonics",
|
|
G_CALLBACK (label_shortcut_setting_changed),
|
|
NULL);
|
|
g_signal_connect (settings, "notify::gtk-enable-accels",
|
|
G_CALLBACK (label_shortcut_setting_changed),
|
|
NULL);
|
|
|
|
g_object_set_data (G_OBJECT (settings), "gtk-label-shortcuts-connected",
|
|
GINT_TO_POINTER (TRUE));
|
|
}
|
|
|
|
label_shortcut_setting_apply (GTK_LABEL (widget));
|
|
}
|
|
|
|
|
|
static void
|
|
label_mnemonic_widget_weak_notify (gpointer data,
|
|
GObject *where_the_object_was)
|
|
{
|
|
GtkLabel *label = data;
|
|
|
|
label->mnemonic_widget = NULL;
|
|
g_object_notify (G_OBJECT (label), "mnemonic-widget");
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_mnemonic_widget:
|
|
* @label: a #GtkLabel
|
|
* @widget: (allow-none): the target #GtkWidget
|
|
*
|
|
* If the label has been set so that it has an mnemonic key (using
|
|
* i.e. gtk_label_set_markup_with_mnemonic(),
|
|
* gtk_label_set_text_with_mnemonic(), gtk_label_new_with_mnemonic()
|
|
* or the "use_underline" property) the label can be associated with a
|
|
* widget that is the target of the mnemonic. When the label is inside
|
|
* a widget (like a #GtkButton or a #GtkNotebook tab) it is
|
|
* automatically associated with the correct widget, but sometimes
|
|
* (i.e. when the target is a #GtkEntry next to the label) you need to
|
|
* set it explicitly using this function.
|
|
*
|
|
* The target widget will be accelerated by emitting the
|
|
* GtkWidget::mnemonic-activate signal on it. The default handler for
|
|
* this signal will activate the widget if there are no mnemonic collisions
|
|
* and toggle focus between the colliding widgets otherwise.
|
|
**/
|
|
void
|
|
gtk_label_set_mnemonic_widget (GtkLabel *label,
|
|
GtkWidget *widget)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
if (widget)
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
if (label->mnemonic_widget)
|
|
{
|
|
gtk_widget_remove_mnemonic_label (label->mnemonic_widget, GTK_WIDGET (label));
|
|
g_object_weak_unref (G_OBJECT (label->mnemonic_widget),
|
|
label_mnemonic_widget_weak_notify,
|
|
label);
|
|
}
|
|
label->mnemonic_widget = widget;
|
|
if (label->mnemonic_widget)
|
|
{
|
|
g_object_weak_ref (G_OBJECT (label->mnemonic_widget),
|
|
label_mnemonic_widget_weak_notify,
|
|
label);
|
|
gtk_widget_add_mnemonic_label (label->mnemonic_widget, GTK_WIDGET (label));
|
|
}
|
|
|
|
g_object_notify (G_OBJECT (label), "mnemonic-widget");
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_mnemonic_widget:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Retrieves the target of the mnemonic (keyboard shortcut) of this
|
|
* label. See gtk_label_set_mnemonic_widget().
|
|
*
|
|
* Return value: the target of the label's mnemonic, or %NULL if none
|
|
* has been set and the default algorithm will be used.
|
|
**/
|
|
GtkWidget *
|
|
gtk_label_get_mnemonic_widget (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
|
|
|
|
return label->mnemonic_widget;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_mnemonic_keyval:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* If the label has been set so that it has an mnemonic key this function
|
|
* returns the keyval used for the mnemonic accelerator. If there is no
|
|
* mnemonic set up it returns #GDK_VoidSymbol.
|
|
*
|
|
* Returns: GDK keyval usable for accelerators, or #GDK_VoidSymbol
|
|
**/
|
|
guint
|
|
gtk_label_get_mnemonic_keyval (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), GDK_VoidSymbol);
|
|
|
|
return label->mnemonic_keyval;
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_text_internal (GtkLabel *label,
|
|
gchar *str)
|
|
{
|
|
g_free (label->text);
|
|
|
|
label->text = str;
|
|
|
|
gtk_label_select_region_index (label, 0, 0);
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_label_internal (GtkLabel *label,
|
|
gchar *str)
|
|
{
|
|
g_free (label->label);
|
|
|
|
label->label = str;
|
|
|
|
g_object_notify (G_OBJECT (label), "label");
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_use_markup_internal (GtkLabel *label,
|
|
gboolean val)
|
|
{
|
|
val = val != FALSE;
|
|
if (label->use_markup != val)
|
|
{
|
|
label->use_markup = val;
|
|
|
|
g_object_notify (G_OBJECT (label), "use-markup");
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_use_underline_internal (GtkLabel *label,
|
|
gboolean val)
|
|
{
|
|
val = val != FALSE;
|
|
if (label->use_underline != val)
|
|
{
|
|
label->use_underline = val;
|
|
|
|
g_object_notify (G_OBJECT (label), "use-underline");
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_compose_effective_attrs (GtkLabel *label)
|
|
{
|
|
PangoAttrIterator *iter;
|
|
PangoAttribute *attr;
|
|
GSList *iter_attrs, *l;
|
|
|
|
if (label->attrs)
|
|
{
|
|
if (label->effective_attrs)
|
|
{
|
|
if ((iter = pango_attr_list_get_iterator (label->attrs)))
|
|
{
|
|
do
|
|
{
|
|
iter_attrs = pango_attr_iterator_get_attrs (iter);
|
|
for (l = iter_attrs; l; l = l->next)
|
|
{
|
|
attr = l->data;
|
|
pango_attr_list_insert (label->effective_attrs, attr);
|
|
}
|
|
g_slist_free (iter_attrs);
|
|
}
|
|
while (pango_attr_iterator_next (iter));
|
|
pango_attr_iterator_destroy (iter);
|
|
}
|
|
}
|
|
else
|
|
label->effective_attrs =
|
|
pango_attr_list_ref (label->attrs);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_attributes_internal (GtkLabel *label,
|
|
PangoAttrList *attrs)
|
|
{
|
|
if (attrs)
|
|
pango_attr_list_ref (attrs);
|
|
|
|
if (label->attrs)
|
|
pango_attr_list_unref (label->attrs);
|
|
label->attrs = attrs;
|
|
|
|
g_object_notify (G_OBJECT (label), "attributes");
|
|
}
|
|
|
|
|
|
/* Calculates text, attrs and mnemonic_keyval from
|
|
* label, use_underline and use_markup
|
|
*/
|
|
static void
|
|
gtk_label_recalculate (GtkLabel *label)
|
|
{
|
|
guint keyval = label->mnemonic_keyval;
|
|
|
|
if (label->use_markup)
|
|
gtk_label_set_markup_internal (label, label->label, label->use_underline);
|
|
else
|
|
{
|
|
if (label->use_underline)
|
|
gtk_label_set_uline_text_internal (label, label->label);
|
|
else
|
|
{
|
|
if (label->effective_attrs)
|
|
pango_attr_list_unref (label->effective_attrs);
|
|
label->effective_attrs = NULL;
|
|
gtk_label_set_text_internal (label, g_strdup (label->label));
|
|
}
|
|
}
|
|
|
|
gtk_label_compose_effective_attrs (label);
|
|
|
|
if (!label->use_underline)
|
|
label->mnemonic_keyval = GDK_VoidSymbol;
|
|
|
|
if (keyval != label->mnemonic_keyval)
|
|
{
|
|
gtk_label_setup_mnemonic (label, keyval);
|
|
g_object_notify (G_OBJECT (label), "mnemonic-keyval");
|
|
}
|
|
|
|
gtk_label_clear_layout (label);
|
|
gtk_label_clear_select_info (label);
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_text:
|
|
* @label: a #GtkLabel
|
|
* @str: The text you want to set
|
|
*
|
|
* Sets the text within the #GtkLabel widget. It overwrites any text that
|
|
* was there before.
|
|
*
|
|
* This will also clear any previously set mnemonic accelerators.
|
|
**/
|
|
void
|
|
gtk_label_set_text (GtkLabel *label,
|
|
const gchar *str)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
g_object_freeze_notify (G_OBJECT (label));
|
|
|
|
gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
|
|
gtk_label_set_use_markup_internal (label, FALSE);
|
|
gtk_label_set_use_underline_internal (label, FALSE);
|
|
|
|
gtk_label_recalculate (label);
|
|
|
|
g_object_thaw_notify (G_OBJECT (label));
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_attributes:
|
|
* @label: a #GtkLabel
|
|
* @attrs: a #PangoAttrList
|
|
*
|
|
* Sets a #PangoAttrList; the attributes in the list are applied to the
|
|
* label text.
|
|
*
|
|
* <note><para>The attributes set with this function will be applied
|
|
* and merged with any other attributes previously effected by way
|
|
* of the #GtkLabel:use-underline or #GtkLabel:use-markup properties.
|
|
* While it is not recommended to mix markup strings with manually set
|
|
* attributes, if you must; know that the attributes will be applied
|
|
* to the label after the markup string is parsed.</para></note>
|
|
**/
|
|
void
|
|
gtk_label_set_attributes (GtkLabel *label,
|
|
PangoAttrList *attrs)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
gtk_label_set_attributes_internal (label, attrs);
|
|
|
|
gtk_label_recalculate (label);
|
|
|
|
gtk_label_clear_layout (label);
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_attributes:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Gets the attribute list that was set on the label using
|
|
* gtk_label_set_attributes(), if any. This function does
|
|
* not reflect attributes that come from the labels markup
|
|
* (see gtk_label_set_markup()). If you want to get the
|
|
* effective attributes for the label, use
|
|
* pango_layout_get_attribute (gtk_label_get_layout (label)).
|
|
*
|
|
* Return value: the attribute list, or %NULL if none was set.
|
|
**/
|
|
PangoAttrList *
|
|
gtk_label_get_attributes (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
|
|
|
|
return label->attrs;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_label:
|
|
* @label: a #GtkLabel
|
|
* @str: the new text to set for the label
|
|
*
|
|
* Sets the text of the label. The label is interpreted as
|
|
* including embedded underlines and/or Pango markup depending
|
|
* on the values of the #GtkLabel:use-underline" and
|
|
* #GtkLabel:use-markup properties.
|
|
**/
|
|
void
|
|
gtk_label_set_label (GtkLabel *label,
|
|
const gchar *str)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
g_object_freeze_notify (G_OBJECT (label));
|
|
|
|
gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
|
|
gtk_label_recalculate (label);
|
|
|
|
g_object_thaw_notify (G_OBJECT (label));
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_label:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Fetches the text from a label widget including any embedded
|
|
* underlines indicating mnemonics and Pango markup. (See
|
|
* gtk_label_get_text()).
|
|
*
|
|
* Return value: the text of the label widget. This string is
|
|
* owned by the widget and must not be modified or freed.
|
|
**/
|
|
G_CONST_RETURN gchar *
|
|
gtk_label_get_label (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
|
|
|
|
return label->label;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
GtkLabel *label;
|
|
GList *links;
|
|
GString *new_str;
|
|
GdkColor *link_color;
|
|
GdkColor *visited_link_color;
|
|
} UriParserData;
|
|
|
|
static void
|
|
start_element_handler (GMarkupParseContext *context,
|
|
const gchar *element_name,
|
|
const gchar **attribute_names,
|
|
const gchar **attribute_values,
|
|
gpointer user_data,
|
|
GError **error)
|
|
{
|
|
UriParserData *pdata = user_data;
|
|
|
|
if (strcmp (element_name, "a") == 0)
|
|
{
|
|
GtkLabelLink *link;
|
|
const gchar *uri = NULL;
|
|
const gchar *title = NULL;
|
|
gboolean visited = FALSE;
|
|
gint line_number;
|
|
gint char_number;
|
|
gint i;
|
|
GdkColor *color = NULL;
|
|
|
|
g_markup_parse_context_get_position (context, &line_number, &char_number);
|
|
|
|
for (i = 0; attribute_names[i] != NULL; i++)
|
|
{
|
|
const gchar *attr = attribute_names[i];
|
|
|
|
if (strcmp (attr, "href") == 0)
|
|
uri = attribute_values[i];
|
|
else if (strcmp (attr, "title") == 0)
|
|
title = attribute_values[i];
|
|
else
|
|
{
|
|
g_set_error (error,
|
|
G_MARKUP_ERROR,
|
|
G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE,
|
|
"Attribute '%s' is not allowed on the <a> tag "
|
|
"on line %d char %d",
|
|
attr, line_number, char_number);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (uri == NULL)
|
|
{
|
|
g_set_error (error,
|
|
G_MARKUP_ERROR,
|
|
G_MARKUP_ERROR_INVALID_CONTENT,
|
|
"Attribute 'href' was missing on the <a> tag "
|
|
"on line %d char %d",
|
|
line_number, char_number);
|
|
return;
|
|
}
|
|
|
|
visited = FALSE;
|
|
if (pdata->label->track_links && pdata->label->select_info)
|
|
{
|
|
GList *l;
|
|
for (l = pdata->label->select_info->links; l; l = l->next)
|
|
{
|
|
link = l->data;
|
|
if (strcmp (uri, link->uri) == 0)
|
|
{
|
|
visited = link->visited;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (visited)
|
|
color = pdata->visited_link_color;
|
|
else
|
|
color = pdata->link_color;
|
|
|
|
g_string_append_printf (pdata->new_str,
|
|
"<span color=\"#%04x%04x%04x\" underline=\"single\">",
|
|
color->red,
|
|
color->green,
|
|
color->blue);
|
|
|
|
link = g_new0 (GtkLabelLink, 1);
|
|
link->uri = g_strdup (uri);
|
|
link->title = g_strdup (title);
|
|
link->visited = visited;
|
|
pdata->links = g_list_append (pdata->links, link);
|
|
}
|
|
else
|
|
{
|
|
gint i;
|
|
|
|
g_string_append_c (pdata->new_str, '<');
|
|
g_string_append (pdata->new_str, element_name);
|
|
|
|
for (i = 0; attribute_names[i] != NULL; i++)
|
|
{
|
|
const gchar *attr = attribute_names[i];
|
|
const gchar *value = attribute_values[i];
|
|
gchar *newvalue;
|
|
|
|
newvalue = g_markup_escape_text (value, -1);
|
|
|
|
g_string_append_c (pdata->new_str, ' ');
|
|
g_string_append (pdata->new_str, attr);
|
|
g_string_append (pdata->new_str, "=\"");
|
|
g_string_append (pdata->new_str, newvalue);
|
|
g_string_append_c (pdata->new_str, '\"');
|
|
|
|
g_free (newvalue);
|
|
}
|
|
g_string_append_c (pdata->new_str, '>');
|
|
}
|
|
}
|
|
|
|
static void
|
|
end_element_handler (GMarkupParseContext *context,
|
|
const gchar *element_name,
|
|
gpointer user_data,
|
|
GError **error)
|
|
{
|
|
UriParserData *pdata = user_data;
|
|
|
|
if (!strcmp (element_name, "a"))
|
|
g_string_append (pdata->new_str, "</span>");
|
|
else
|
|
{
|
|
g_string_append (pdata->new_str, "</");
|
|
g_string_append (pdata->new_str, element_name);
|
|
g_string_append_c (pdata->new_str, '>');
|
|
}
|
|
}
|
|
|
|
static void
|
|
text_handler (GMarkupParseContext *context,
|
|
const gchar *text,
|
|
gsize text_len,
|
|
gpointer user_data,
|
|
GError **error)
|
|
{
|
|
UriParserData *pdata = user_data;
|
|
gchar *newtext;
|
|
|
|
newtext = g_markup_escape_text (text, text_len);
|
|
g_string_append (pdata->new_str, newtext);
|
|
g_free (newtext);
|
|
}
|
|
|
|
static const GMarkupParser markup_parser =
|
|
{
|
|
start_element_handler,
|
|
end_element_handler,
|
|
text_handler,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
static gboolean
|
|
xml_isspace (gchar c)
|
|
{
|
|
return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
|
|
}
|
|
|
|
static void
|
|
link_free (GtkLabelLink *link)
|
|
{
|
|
g_free (link->uri);
|
|
g_free (link->title);
|
|
g_free (link);
|
|
}
|
|
|
|
static void
|
|
gtk_label_get_link_colors (GtkWidget *widget,
|
|
GdkColor **link_color,
|
|
GdkColor **visited_link_color)
|
|
{
|
|
gtk_widget_ensure_style (widget);
|
|
gtk_widget_style_get (widget,
|
|
"link-color", link_color,
|
|
"visited-link-color", visited_link_color,
|
|
NULL);
|
|
if (!*link_color)
|
|
*link_color = gdk_color_copy (&default_link_color);
|
|
if (!*visited_link_color)
|
|
*visited_link_color = gdk_color_copy (&default_visited_link_color);
|
|
}
|
|
|
|
static gboolean
|
|
parse_uri_markup (GtkLabel *label,
|
|
const gchar *str,
|
|
gchar **new_str,
|
|
GList **links,
|
|
GError **error)
|
|
{
|
|
GMarkupParseContext *context = NULL;
|
|
const gchar *p, *end;
|
|
gboolean needs_root = TRUE;
|
|
gsize length;
|
|
UriParserData pdata;
|
|
|
|
length = strlen (str);
|
|
p = str;
|
|
end = str + length;
|
|
|
|
pdata.label = label;
|
|
pdata.links = NULL;
|
|
pdata.new_str = g_string_sized_new (length);
|
|
|
|
gtk_label_get_link_colors (GTK_WIDGET (label), &pdata.link_color, &pdata.visited_link_color);
|
|
|
|
while (p != end && xml_isspace (*p))
|
|
p++;
|
|
|
|
if (end - p >= 8 && strncmp (p, "<markup>", 8) == 0)
|
|
needs_root = FALSE;
|
|
|
|
context = g_markup_parse_context_new (&markup_parser, 0, &pdata, NULL);
|
|
|
|
if (needs_root)
|
|
{
|
|
if (!g_markup_parse_context_parse (context, "<markup>", -1, error))
|
|
goto failed;
|
|
}
|
|
|
|
if (!g_markup_parse_context_parse (context, str, length, error))
|
|
goto failed;
|
|
|
|
if (needs_root)
|
|
{
|
|
if (!g_markup_parse_context_parse (context, "</markup>", -1, error))
|
|
goto failed;
|
|
}
|
|
|
|
if (!g_markup_parse_context_end_parse (context, error))
|
|
goto failed;
|
|
|
|
g_markup_parse_context_free (context);
|
|
|
|
*new_str = g_string_free (pdata.new_str, FALSE);
|
|
*links = pdata.links;
|
|
|
|
gdk_color_free (pdata.link_color);
|
|
gdk_color_free (pdata.visited_link_color);
|
|
|
|
return TRUE;
|
|
|
|
failed:
|
|
g_markup_parse_context_free (context);
|
|
g_string_free (pdata.new_str, TRUE);
|
|
g_list_foreach (pdata.links, (GFunc)link_free, NULL);
|
|
g_list_free (pdata.links);
|
|
gdk_color_free (pdata.link_color);
|
|
gdk_color_free (pdata.visited_link_color);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_label_ensure_has_tooltip (GtkLabel *label)
|
|
{
|
|
GList *l;
|
|
gboolean has_tooltip = FALSE;
|
|
|
|
for (l = label->select_info->links; l; l = l->next)
|
|
{
|
|
GtkLabelLink *link = l->data;
|
|
if (link->title)
|
|
{
|
|
has_tooltip = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
gtk_widget_set_has_tooltip (GTK_WIDGET (label), has_tooltip);
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_markup_internal (GtkLabel *label,
|
|
const gchar *str,
|
|
gboolean with_uline)
|
|
{
|
|
GtkLabelPrivate *priv = GTK_LABEL_GET_PRIVATE (label);
|
|
gchar *text = NULL;
|
|
GError *error = NULL;
|
|
PangoAttrList *attrs = NULL;
|
|
gunichar accel_char = 0;
|
|
gchar *new_str;
|
|
GList *links = NULL;
|
|
|
|
if (!parse_uri_markup (label, str, &new_str, &links, &error))
|
|
{
|
|
g_warning ("Failed to set text from markup due to error parsing markup: %s",
|
|
error->message);
|
|
g_error_free (error);
|
|
return;
|
|
}
|
|
|
|
gtk_label_clear_links (label);
|
|
if (links)
|
|
{
|
|
gtk_label_ensure_select_info (label);
|
|
label->select_info->links = links;
|
|
gtk_label_ensure_has_tooltip (label);
|
|
}
|
|
|
|
if (with_uline)
|
|
{
|
|
gboolean enable_mnemonics;
|
|
gboolean auto_mnemonics;
|
|
|
|
g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
|
|
"gtk-enable-mnemonics", &enable_mnemonics,
|
|
"gtk-auto-mnemonics", &auto_mnemonics,
|
|
NULL);
|
|
|
|
if (!(enable_mnemonics && priv->mnemonics_visible &&
|
|
(!auto_mnemonics ||
|
|
(gtk_widget_is_sensitive (GTK_WIDGET (label)) &&
|
|
(!label->mnemonic_widget ||
|
|
gtk_widget_is_sensitive (label->mnemonic_widget))))))
|
|
{
|
|
gchar *tmp;
|
|
gchar *pattern;
|
|
guint key;
|
|
|
|
if (separate_uline_pattern (new_str, &key, &tmp, &pattern))
|
|
{
|
|
g_free (new_str);
|
|
new_str = tmp;
|
|
g_free (pattern);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!pango_parse_markup (new_str,
|
|
-1,
|
|
with_uline ? '_' : 0,
|
|
&attrs,
|
|
&text,
|
|
with_uline ? &accel_char : NULL,
|
|
&error))
|
|
{
|
|
g_warning ("Failed to set text from markup due to error parsing markup: %s",
|
|
error->message);
|
|
g_free (new_str);
|
|
g_error_free (error);
|
|
return;
|
|
}
|
|
|
|
g_free (new_str);
|
|
|
|
if (text)
|
|
gtk_label_set_text_internal (label, text);
|
|
|
|
if (attrs)
|
|
{
|
|
if (label->effective_attrs)
|
|
pango_attr_list_unref (label->effective_attrs);
|
|
label->effective_attrs = attrs;
|
|
}
|
|
|
|
if (accel_char != 0)
|
|
label->mnemonic_keyval = gdk_keyval_to_lower (gdk_unicode_to_keyval (accel_char));
|
|
else
|
|
label->mnemonic_keyval = GDK_VoidSymbol;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_markup:
|
|
* @label: a #GtkLabel
|
|
* @str: a markup string (see <link linkend="PangoMarkupFormat">Pango markup format</link>)
|
|
*
|
|
* Parses @str which is marked up with the <link
|
|
* linkend="PangoMarkupFormat">Pango text markup language</link>, setting the
|
|
* label's text and attribute list based on the parse results. If the @str is
|
|
* external data, you may need to escape it with g_markup_escape_text() or
|
|
* g_markup_printf_escaped()<!-- -->:
|
|
* |[
|
|
* char *markup;
|
|
*
|
|
* markup = g_markup_printf_escaped ("<span style=\"italic\">%s</span>", str);
|
|
* gtk_label_set_markup (GTK_LABEL (label), markup);
|
|
* g_free (markup);
|
|
* ]|
|
|
**/
|
|
void
|
|
gtk_label_set_markup (GtkLabel *label,
|
|
const gchar *str)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
g_object_freeze_notify (G_OBJECT (label));
|
|
|
|
gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
|
|
gtk_label_set_use_markup_internal (label, TRUE);
|
|
gtk_label_set_use_underline_internal (label, FALSE);
|
|
|
|
gtk_label_recalculate (label);
|
|
|
|
g_object_thaw_notify (G_OBJECT (label));
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_markup_with_mnemonic:
|
|
* @label: a #GtkLabel
|
|
* @str: a markup string (see <link linkend="PangoMarkupFormat">Pango markup format</link>)
|
|
*
|
|
* Parses @str which is marked up with the <link linkend="PangoMarkupFormat">Pango text markup language</link>,
|
|
* setting the label's text and attribute list based on the parse results.
|
|
* If characters in @str are preceded by an underscore, they are underlined
|
|
* indicating that they represent a keyboard accelerator called a mnemonic.
|
|
*
|
|
* The mnemonic key can be used to activate another widget, chosen
|
|
* automatically, or explicitly using gtk_label_set_mnemonic_widget().
|
|
**/
|
|
void
|
|
gtk_label_set_markup_with_mnemonic (GtkLabel *label,
|
|
const gchar *str)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
g_object_freeze_notify (G_OBJECT (label));
|
|
|
|
gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
|
|
gtk_label_set_use_markup_internal (label, TRUE);
|
|
gtk_label_set_use_underline_internal (label, TRUE);
|
|
|
|
gtk_label_recalculate (label);
|
|
|
|
g_object_thaw_notify (G_OBJECT (label));
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_text:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Fetches the text from a label widget, as displayed on the
|
|
* screen. This does not include any embedded underlines
|
|
* indicating mnemonics or Pango markup. (See gtk_label_get_label())
|
|
*
|
|
* Return value: the text in the label widget. This is the internal
|
|
* string used by the label, and must not be modified.
|
|
**/
|
|
G_CONST_RETURN gchar *
|
|
gtk_label_get_text (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
|
|
|
|
return label->text;
|
|
}
|
|
|
|
static PangoAttrList *
|
|
gtk_label_pattern_to_attrs (GtkLabel *label,
|
|
const gchar *pattern)
|
|
{
|
|
const char *start;
|
|
const char *p = label->text;
|
|
const char *q = pattern;
|
|
PangoAttrList *attrs;
|
|
|
|
attrs = pango_attr_list_new ();
|
|
|
|
while (1)
|
|
{
|
|
while (*p && *q && *q != '_')
|
|
{
|
|
p = g_utf8_next_char (p);
|
|
q++;
|
|
}
|
|
start = p;
|
|
while (*p && *q && *q == '_')
|
|
{
|
|
p = g_utf8_next_char (p);
|
|
q++;
|
|
}
|
|
|
|
if (p > start)
|
|
{
|
|
PangoAttribute *attr = pango_attr_underline_new (PANGO_UNDERLINE_LOW);
|
|
attr->start_index = start - label->text;
|
|
attr->end_index = p - label->text;
|
|
|
|
pango_attr_list_insert (attrs, attr);
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
|
|
return attrs;
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_pattern_internal (GtkLabel *label,
|
|
const gchar *pattern,
|
|
gboolean is_mnemonic)
|
|
{
|
|
GtkLabelPrivate *priv = GTK_LABEL_GET_PRIVATE (label);
|
|
PangoAttrList *attrs;
|
|
gboolean enable_mnemonics;
|
|
gboolean auto_mnemonics;
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
if (label->pattern_set)
|
|
return;
|
|
|
|
if (is_mnemonic)
|
|
{
|
|
g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
|
|
"gtk-enable-mnemonics", &enable_mnemonics,
|
|
"gtk-auto-mnemonics", &auto_mnemonics,
|
|
NULL);
|
|
|
|
if (enable_mnemonics && priv->mnemonics_visible && pattern &&
|
|
(!auto_mnemonics ||
|
|
(gtk_widget_is_sensitive (GTK_WIDGET (label)) &&
|
|
(!label->mnemonic_widget ||
|
|
gtk_widget_is_sensitive (label->mnemonic_widget)))))
|
|
attrs = gtk_label_pattern_to_attrs (label, pattern);
|
|
else
|
|
attrs = NULL;
|
|
}
|
|
else
|
|
attrs = gtk_label_pattern_to_attrs (label, pattern);
|
|
|
|
if (label->effective_attrs)
|
|
pango_attr_list_unref (label->effective_attrs);
|
|
label->effective_attrs = attrs;
|
|
}
|
|
|
|
void
|
|
gtk_label_set_pattern (GtkLabel *label,
|
|
const gchar *pattern)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
label->pattern_set = FALSE;
|
|
|
|
if (pattern)
|
|
{
|
|
gtk_label_set_pattern_internal (label, pattern, FALSE);
|
|
label->pattern_set = TRUE;
|
|
}
|
|
else
|
|
gtk_label_recalculate (label);
|
|
|
|
gtk_label_clear_layout (label);
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
}
|
|
|
|
|
|
/**
|
|
* gtk_label_set_justify:
|
|
* @label: a #GtkLabel
|
|
* @jtype: a #GtkJustification
|
|
*
|
|
* Sets the alignment of the lines in the text of the label relative to
|
|
* each other. %GTK_JUSTIFY_LEFT is the default value when the
|
|
* widget is first created with gtk_label_new(). If you instead want
|
|
* to set the alignment of the label as a whole, use
|
|
* gtk_misc_set_alignment() instead. gtk_label_set_justify() has no
|
|
* effect on labels containing only a single line.
|
|
**/
|
|
void
|
|
gtk_label_set_justify (GtkLabel *label,
|
|
GtkJustification jtype)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
g_return_if_fail (jtype >= GTK_JUSTIFY_LEFT && jtype <= GTK_JUSTIFY_FILL);
|
|
|
|
if ((GtkJustification) label->jtype != jtype)
|
|
{
|
|
label->jtype = jtype;
|
|
|
|
/* No real need to be this drastic, but easier than duplicating the code */
|
|
gtk_label_clear_layout (label);
|
|
|
|
g_object_notify (G_OBJECT (label), "justify");
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_justify:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Returns the justification of the label. See gtk_label_set_justify().
|
|
*
|
|
* Return value: #GtkJustification
|
|
**/
|
|
GtkJustification
|
|
gtk_label_get_justify (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), 0);
|
|
|
|
return label->jtype;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_ellipsize:
|
|
* @label: a #GtkLabel
|
|
* @mode: a #PangoEllipsizeMode
|
|
*
|
|
* Sets the mode used to ellipsize (add an ellipsis: "...") to the text
|
|
* if there is not enough space to render the entire string.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
void
|
|
gtk_label_set_ellipsize (GtkLabel *label,
|
|
PangoEllipsizeMode mode)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE && mode <= PANGO_ELLIPSIZE_END);
|
|
|
|
if ((PangoEllipsizeMode) label->ellipsize != mode)
|
|
{
|
|
label->ellipsize = mode;
|
|
|
|
/* No real need to be this drastic, but easier than duplicating the code */
|
|
gtk_label_clear_layout (label);
|
|
|
|
g_object_notify (G_OBJECT (label), "ellipsize");
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_ellipsize:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Returns the ellipsizing position of the label. See gtk_label_set_ellipsize().
|
|
*
|
|
* Return value: #PangoEllipsizeMode
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
PangoEllipsizeMode
|
|
gtk_label_get_ellipsize (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), PANGO_ELLIPSIZE_NONE);
|
|
|
|
return label->ellipsize;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_width_chars:
|
|
* @label: a #GtkLabel
|
|
* @n_chars: the new desired width, in characters.
|
|
*
|
|
* Sets the desired width in characters of @label to @n_chars.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
void
|
|
gtk_label_set_width_chars (GtkLabel *label,
|
|
gint n_chars)
|
|
{
|
|
GtkLabelPrivate *priv;
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
priv = GTK_LABEL_GET_PRIVATE (label);
|
|
|
|
if (priv->width_chars != n_chars)
|
|
{
|
|
priv->width_chars = n_chars;
|
|
g_object_notify (G_OBJECT (label), "width-chars");
|
|
gtk_label_invalidate_wrap_width (label);
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_width_chars:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Retrieves the desired width of @label, in characters. See
|
|
* gtk_label_set_width_chars().
|
|
*
|
|
* Return value: the width of the label in characters.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
gint
|
|
gtk_label_get_width_chars (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), -1);
|
|
|
|
return GTK_LABEL_GET_PRIVATE (label)->width_chars;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_max_width_chars:
|
|
* @label: a #GtkLabel
|
|
* @n_chars: the new desired maximum width, in characters.
|
|
*
|
|
* Sets the desired maximum width in characters of @label to @n_chars.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
void
|
|
gtk_label_set_max_width_chars (GtkLabel *label,
|
|
gint n_chars)
|
|
{
|
|
GtkLabelPrivate *priv;
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
priv = GTK_LABEL_GET_PRIVATE (label);
|
|
|
|
if (priv->max_width_chars != n_chars)
|
|
{
|
|
priv->max_width_chars = n_chars;
|
|
|
|
g_object_notify (G_OBJECT (label), "max-width-chars");
|
|
gtk_label_invalidate_wrap_width (label);
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_max_width_chars:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Retrieves the desired maximum width of @label, in characters. See
|
|
* gtk_label_set_width_chars().
|
|
*
|
|
* Return value: the maximum width of the label in characters.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
gint
|
|
gtk_label_get_max_width_chars (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), -1);
|
|
|
|
return GTK_LABEL_GET_PRIVATE (label)->max_width_chars;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_line_wrap:
|
|
* @label: a #GtkLabel
|
|
* @wrap: the setting
|
|
*
|
|
* Toggles line wrapping within the #GtkLabel widget. %TRUE makes it break
|
|
* lines if text exceeds the widget's size. %FALSE lets the text get cut off
|
|
* by the edge of the widget if it exceeds the widget size.
|
|
*
|
|
* Note that setting line wrapping to %TRUE does not make the label
|
|
* wrap at its parent container's width, because GTK+ widgets
|
|
* conceptually can't make their requisition depend on the parent
|
|
* container's size. For a label that wraps at a specific position,
|
|
* set the label's width using gtk_widget_set_size_request().
|
|
**/
|
|
void
|
|
gtk_label_set_line_wrap (GtkLabel *label,
|
|
gboolean wrap)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
wrap = wrap != FALSE;
|
|
|
|
if (label->wrap != wrap)
|
|
{
|
|
label->wrap = wrap;
|
|
|
|
gtk_label_clear_layout (label);
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
g_object_notify (G_OBJECT (label), "wrap");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_line_wrap:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Returns whether lines in the label are automatically wrapped.
|
|
* See gtk_label_set_line_wrap().
|
|
*
|
|
* Return value: %TRUE if the lines of the label are automatically wrapped.
|
|
*/
|
|
gboolean
|
|
gtk_label_get_line_wrap (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
|
|
|
|
return label->wrap;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_line_wrap_mode:
|
|
* @label: a #GtkLabel
|
|
* @wrap_mode: the line wrapping mode
|
|
*
|
|
* If line wrapping is on (see gtk_label_set_line_wrap()) this controls how
|
|
* the line wrapping is done. The default is %PANGO_WRAP_WORD which means
|
|
* wrap on word boundaries.
|
|
*
|
|
* Since: 2.10
|
|
**/
|
|
void
|
|
gtk_label_set_line_wrap_mode (GtkLabel *label,
|
|
PangoWrapMode wrap_mode)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
if (label->wrap_mode != wrap_mode)
|
|
{
|
|
label->wrap_mode = wrap_mode;
|
|
g_object_notify (G_OBJECT (label), "wrap-mode");
|
|
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_line_wrap_mode:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Returns line wrap mode used by the label. See gtk_label_set_line_wrap_mode().
|
|
*
|
|
* Return value: %TRUE if the lines of the label are automatically wrapped.
|
|
*
|
|
* Since: 2.10
|
|
*/
|
|
PangoWrapMode
|
|
gtk_label_get_line_wrap_mode (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
|
|
|
|
return label->wrap_mode;
|
|
}
|
|
|
|
static void
|
|
gtk_label_destroy (GtkObject *object)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (object);
|
|
|
|
gtk_label_set_mnemonic_widget (label, NULL);
|
|
|
|
GTK_OBJECT_CLASS (gtk_label_parent_class)->destroy (object);
|
|
}
|
|
|
|
static void
|
|
gtk_label_finalize (GObject *object)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (object);
|
|
|
|
g_free (label->label);
|
|
g_free (label->text);
|
|
|
|
if (label->layout)
|
|
g_object_unref (label->layout);
|
|
|
|
if (label->attrs)
|
|
pango_attr_list_unref (label->attrs);
|
|
|
|
if (label->effective_attrs)
|
|
pango_attr_list_unref (label->effective_attrs);
|
|
|
|
gtk_label_clear_links (label);
|
|
g_free (label->select_info);
|
|
|
|
G_OBJECT_CLASS (gtk_label_parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gtk_label_clear_layout (GtkLabel *label)
|
|
{
|
|
if (label->layout)
|
|
{
|
|
g_object_unref (label->layout);
|
|
label->layout = NULL;
|
|
|
|
//gtk_label_clear_links (label);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
get_label_width (GtkLabel *label,
|
|
gint *minimum,
|
|
gint *natural)
|
|
{
|
|
GtkWidgetAuxInfo *aux_info;
|
|
GtkLabelPrivate *priv;
|
|
PangoLayout *layout;
|
|
PangoContext *context;
|
|
PangoFontMetrics *metrics;
|
|
PangoRectangle rect;
|
|
gint char_width, digit_width, char_pixels, text_width, ellipsize_chars, guess_width;
|
|
|
|
priv = GTK_LABEL_GET_PRIVATE (label);
|
|
aux_info = _gtk_widget_get_aux_info (GTK_WIDGET (label), FALSE);
|
|
|
|
layout = pango_layout_copy (label->layout);
|
|
context = pango_layout_get_context (layout);
|
|
metrics = pango_context_get_metrics (context, GTK_WIDGET (label)->style->font_desc,
|
|
pango_context_get_language (context));
|
|
|
|
char_width = pango_font_metrics_get_approximate_char_width (metrics);
|
|
digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
|
|
char_pixels = MAX (char_width, digit_width);
|
|
pango_font_metrics_unref (metrics);
|
|
|
|
/* Fetch the length of the complete unwrapped text */
|
|
pango_layout_set_width (layout, -1);
|
|
pango_layout_get_extents (layout, NULL, &rect);
|
|
text_width = rect.width;
|
|
|
|
/* Fetch the width that was guessed by gtk_label_ensure_layout() */
|
|
pango_layout_get_extents (label->layout, NULL, &rect);
|
|
guess_width = rect.width;
|
|
|
|
/* enforce minimum width for ellipsized labels at ~3 chars */
|
|
if (label->ellipsize)
|
|
ellipsize_chars = 3;
|
|
else
|
|
ellipsize_chars = 0;
|
|
|
|
/* "width-chars" Hard-coded minimum width:
|
|
* - minimum size should be MAX (width-chars, strlen ("..."));
|
|
* - natural size should be MAX (width-chars, strlen (label->text));
|
|
*
|
|
* "max-width-chars" User specified maximum size requisition
|
|
* - minimum size should be MAX (width-chars, 0)
|
|
* - natural size should be MIN (max-width-chars, strlen (label->text))
|
|
*
|
|
* For ellipsizing labels; if max-width-chars is specified: either it is used as
|
|
* a minimum size or the label text as a minimum size (natural size still overflows).
|
|
*
|
|
* For wrapping labels; A reasonable minimum size is useful to naturally layout
|
|
* interfaces automatically. In this case if no "width-chars" is specified, the minimum
|
|
* width will default to the wrap guess that gtk_label_ensure_layout() does.
|
|
*
|
|
* In *any* case the minimum width is completely overridden if an explicit width
|
|
* request was provided.
|
|
*/
|
|
|
|
if (label->ellipsize || label->wrap)
|
|
{
|
|
*minimum = char_pixels * MAX (priv->width_chars, ellipsize_chars);
|
|
|
|
/* Default to the minimum width regularly guessed by GTK+ if no minimum
|
|
* width was specified, only allow unwrapping of these labels.
|
|
*
|
|
* Note that when specifying a small width_chars for a long text;
|
|
* an accordingly large size will be required for the label height.
|
|
*/
|
|
if (label->wrap && priv->width_chars <= 0)
|
|
*minimum = guess_width;
|
|
|
|
if (priv->max_width_chars < 0)
|
|
{
|
|
*natural = MAX (*minimum, text_width);
|
|
}
|
|
else
|
|
{
|
|
gint max_char_width = char_pixels * priv->max_width_chars;
|
|
gint max_width = MIN (text_width, max_char_width);
|
|
|
|
/* With max-char-width specified, we let the minimum widths of
|
|
* ellipsized text crawl up to the max-char-width
|
|
* (note that we dont want to limit the minimum width for wrapping text).
|
|
*/
|
|
if (label->ellipsize)
|
|
*minimum = MIN (text_width, max_width);
|
|
|
|
*natural = MAX (*minimum, max_width);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*minimum = text_width;
|
|
*natural = *minimum;
|
|
}
|
|
|
|
/* if a width-request is set, use that as the requested label width */
|
|
if ((label->wrap || label->ellipsize || priv->width_chars > 0 || priv->max_width_chars > 0) &&
|
|
aux_info && aux_info->width > 0)
|
|
{
|
|
*minimum = aux_info->width * PANGO_SCALE;
|
|
*natural = MAX (*natural, *minimum);
|
|
}
|
|
|
|
g_object_unref (layout);
|
|
}
|
|
|
|
static void
|
|
gtk_label_invalidate_wrap_width (GtkLabel *label)
|
|
{
|
|
GtkLabelPrivate *priv;
|
|
|
|
priv = GTK_LABEL_GET_PRIVATE (label);
|
|
|
|
priv->wrap_width = -1;
|
|
}
|
|
|
|
static gint
|
|
get_label_wrap_width (GtkLabel *label)
|
|
{
|
|
GtkLabelPrivate *priv;
|
|
|
|
priv = GTK_LABEL_GET_PRIVATE (label);
|
|
|
|
if (priv->wrap_width < 0)
|
|
{
|
|
if (priv->width_chars > 0)
|
|
{
|
|
PangoLayout *layout;
|
|
PangoContext *context;
|
|
PangoFontMetrics *metrics;
|
|
PangoRectangle rect;
|
|
gint char_width, digit_width, char_pixels, text_width;
|
|
|
|
layout = pango_layout_copy (label->layout);
|
|
context = pango_layout_get_context (layout);
|
|
metrics = pango_context_get_metrics (context, GTK_WIDGET (label)->style->font_desc,
|
|
pango_context_get_language (context));
|
|
|
|
char_width = pango_font_metrics_get_approximate_char_width (metrics);
|
|
digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
|
|
char_pixels = MAX (char_width, digit_width);
|
|
pango_font_metrics_unref (metrics);
|
|
|
|
pango_layout_set_width (layout, -1);
|
|
pango_layout_get_extents (layout, NULL, &rect);
|
|
g_object_unref (layout);
|
|
|
|
text_width = rect.width;
|
|
|
|
priv->wrap_width = PANGO_PIXELS (MAX (text_width, char_pixels * priv->width_chars));
|
|
}
|
|
else
|
|
{
|
|
PangoLayout *layout;
|
|
|
|
layout = gtk_widget_create_pango_layout (GTK_WIDGET (label),
|
|
"This string is just about long enough.");
|
|
pango_layout_get_size (layout, &priv->wrap_width, NULL);
|
|
g_object_unref (layout);
|
|
}
|
|
}
|
|
|
|
return priv->wrap_width;
|
|
}
|
|
|
|
static void
|
|
gtk_label_ensure_layout (GtkLabel *label, gboolean guess_wrap_width)
|
|
{
|
|
GtkWidget *widget;
|
|
PangoRectangle logical_rect;
|
|
gboolean rtl;
|
|
|
|
widget = GTK_WIDGET (label);
|
|
|
|
rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
|
|
|
|
if (!label->layout)
|
|
{
|
|
PangoAlignment align = PANGO_ALIGN_LEFT; /* Quiet gcc */
|
|
gdouble angle = gtk_label_get_angle (label);
|
|
|
|
if (angle != 0.0 && !label->select_info)
|
|
{
|
|
PangoMatrix matrix = PANGO_MATRIX_INIT;
|
|
|
|
/* We rotate the standard singleton PangoContext for the widget,
|
|
* depending on the fact that it's meant pretty much exclusively
|
|
* for our use.
|
|
*/
|
|
pango_matrix_rotate (&matrix, angle);
|
|
|
|
pango_context_set_matrix (gtk_widget_get_pango_context (widget), &matrix);
|
|
|
|
label->have_transform = TRUE;
|
|
}
|
|
else
|
|
{
|
|
if (label->have_transform)
|
|
pango_context_set_matrix (gtk_widget_get_pango_context (widget), NULL);
|
|
|
|
label->have_transform = FALSE;
|
|
}
|
|
|
|
label->layout = gtk_widget_create_pango_layout (widget, label->text);
|
|
|
|
if (label->effective_attrs)
|
|
pango_layout_set_attributes (label->layout, label->effective_attrs);
|
|
|
|
gtk_label_rescan_links (label);
|
|
|
|
switch (label->jtype)
|
|
{
|
|
case GTK_JUSTIFY_LEFT:
|
|
align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
|
|
break;
|
|
case GTK_JUSTIFY_RIGHT:
|
|
align = rtl ? PANGO_ALIGN_LEFT : PANGO_ALIGN_RIGHT;
|
|
break;
|
|
case GTK_JUSTIFY_CENTER:
|
|
align = PANGO_ALIGN_CENTER;
|
|
break;
|
|
case GTK_JUSTIFY_FILL:
|
|
align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
|
|
pango_layout_set_justify (label->layout, TRUE);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
pango_layout_set_alignment (label->layout, align);
|
|
pango_layout_set_ellipsize (label->layout, label->ellipsize);
|
|
pango_layout_set_single_paragraph_mode (label->layout, label->single_line_mode);
|
|
|
|
if (label->ellipsize)
|
|
pango_layout_set_width (label->layout,
|
|
widget->allocation.width * PANGO_SCALE);
|
|
else if (label->wrap)
|
|
{
|
|
GtkWidgetAuxInfo *aux_info = _gtk_widget_get_aux_info (widget, FALSE);
|
|
gint longest_paragraph;
|
|
gint width, height;
|
|
gint aux_width = 0;
|
|
|
|
if ((angle == 90 || angle == 270) && aux_info && aux_info->height > 0)
|
|
aux_width = aux_info->height;
|
|
else if (aux_info && aux_info->width > 0)
|
|
aux_width = aux_info->width;
|
|
|
|
if (aux_width > 0)
|
|
pango_layout_set_width (label->layout, aux_width * PANGO_SCALE);
|
|
else if (guess_wrap_width == FALSE &&
|
|
widget->allocation.width > 1 && widget->allocation.height > 1)
|
|
{
|
|
if (angle == 90 || angle == 270)
|
|
width = widget->allocation.height - label->misc.ypad * 2;
|
|
else
|
|
width = widget->allocation.width - label->misc.xpad * 2;
|
|
|
|
pango_layout_set_wrap (label->layout, label->wrap_mode);
|
|
pango_layout_set_width (label->layout, MAX (width, 1) * PANGO_SCALE);
|
|
}
|
|
else
|
|
{
|
|
GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (label));
|
|
gint wrap_width;
|
|
|
|
pango_layout_set_width (label->layout, -1);
|
|
pango_layout_get_extents (label->layout, NULL, &logical_rect);
|
|
|
|
width = logical_rect.width;
|
|
/* Try to guess a reasonable maximum width */
|
|
longest_paragraph = width;
|
|
|
|
wrap_width = get_label_wrap_width (label);
|
|
width = MIN (width, wrap_width);
|
|
width = MIN (width,
|
|
PANGO_SCALE * (gdk_screen_get_width (screen) + 1) / 2);
|
|
|
|
pango_layout_set_width (label->layout, width);
|
|
pango_layout_get_extents (label->layout, NULL, &logical_rect);
|
|
width = logical_rect.width;
|
|
height = logical_rect.height;
|
|
|
|
/* Unfortunately, the above may leave us with a very unbalanced looking paragraph,
|
|
* so we try short search for a narrower width that leaves us with the same height
|
|
*/
|
|
if (longest_paragraph > 0)
|
|
{
|
|
gint nlines, perfect_width;
|
|
|
|
nlines = pango_layout_get_line_count (label->layout);
|
|
perfect_width = (longest_paragraph + nlines - 1) / nlines;
|
|
|
|
if (perfect_width < width)
|
|
{
|
|
pango_layout_set_width (label->layout, perfect_width);
|
|
pango_layout_get_extents (label->layout, NULL, &logical_rect);
|
|
|
|
if (logical_rect.height <= height)
|
|
width = logical_rect.width;
|
|
else
|
|
{
|
|
gint mid_width = (perfect_width + width) / 2;
|
|
|
|
if (mid_width > perfect_width)
|
|
{
|
|
pango_layout_set_width (label->layout, mid_width);
|
|
pango_layout_get_extents (label->layout, NULL, &logical_rect);
|
|
|
|
if (logical_rect.height <= height)
|
|
width = logical_rect.width;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
pango_layout_set_width (label->layout, width);
|
|
}
|
|
}
|
|
else /* !label->wrap */
|
|
pango_layout_set_width (label->layout, -1);
|
|
}
|
|
}
|
|
|
|
static gint
|
|
get_single_line_height (GtkWidget *widget,
|
|
PangoLayout *layout)
|
|
{
|
|
PangoContext *context;
|
|
PangoFontMetrics *metrics;
|
|
gint ascent, descent;
|
|
|
|
context = pango_layout_get_context (layout);
|
|
metrics = pango_context_get_metrics (context, widget->style->font_desc,
|
|
pango_context_get_language (context));
|
|
|
|
ascent = pango_font_metrics_get_ascent (metrics);
|
|
descent = pango_font_metrics_get_descent (metrics);
|
|
pango_font_metrics_unref (metrics);
|
|
|
|
return ascent + descent;
|
|
}
|
|
|
|
static void
|
|
gtk_label_size_request_init (GtkSizeRequestIface *iface)
|
|
{
|
|
iface->get_request_mode = gtk_label_get_request_mode;
|
|
iface->get_width = gtk_label_get_width;
|
|
iface->get_height = gtk_label_get_height;
|
|
iface->get_width_for_height = gtk_label_get_width_for_height;
|
|
iface->get_height_for_width = gtk_label_get_height_for_width;
|
|
}
|
|
|
|
static GtkSizeRequestMode
|
|
gtk_label_get_request_mode (GtkSizeRequest *layout)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (layout);
|
|
gdouble angle = gtk_label_get_angle (label);
|
|
|
|
if (angle == 90 || angle == 270)
|
|
return GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT;
|
|
|
|
return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
|
|
}
|
|
|
|
static void
|
|
get_size_for_allocation (GtkLabel *label,
|
|
GtkOrientation orientation,
|
|
gint allocation,
|
|
gint *minimum_size,
|
|
gint *natural_size)
|
|
{
|
|
PangoLayout *layout;
|
|
GtkWidgetAuxInfo *aux_info =
|
|
_gtk_widget_get_aux_info (GTK_WIDGET (label), FALSE);
|
|
gint aux_size;
|
|
gint text_height;
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
layout = pango_layout_copy (label->layout);
|
|
|
|
if (aux_info)
|
|
{
|
|
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
aux_size = aux_info->width;
|
|
else
|
|
aux_size = aux_info->height;
|
|
}
|
|
else
|
|
aux_size = 0;
|
|
|
|
if (aux_size > 0)
|
|
pango_layout_set_width (layout, aux_size * PANGO_SCALE);
|
|
else
|
|
pango_layout_set_width (layout, allocation * PANGO_SCALE);
|
|
|
|
pango_layout_get_pixel_size (layout, NULL, &text_height);
|
|
|
|
if (minimum_size)
|
|
*minimum_size = text_height;
|
|
|
|
if (natural_size)
|
|
*natural_size = text_height;
|
|
|
|
g_object_unref (layout);
|
|
}
|
|
|
|
static void
|
|
gtk_label_get_size (GtkSizeRequest *widget,
|
|
GtkOrientation orientation,
|
|
gint *minimum_size,
|
|
gint *natural_size)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
PangoRectangle required_rect;
|
|
PangoRectangle natural_rect;
|
|
gdouble angle;
|
|
|
|
/* "width-chars" Hard-coded minimum width:
|
|
* - minimum size should be MAX (width-chars, strlen ("..."));
|
|
* - natural size should be MAX (width-chars, strlen (label->text));
|
|
*
|
|
* "max-width-chars" User specified maximum size requisition
|
|
* - minimum size should be MAX (width-chars, 0)
|
|
* - natural size should be MIN (max-width-chars, strlen (label->text))
|
|
*
|
|
*/
|
|
|
|
/* When calculating ->wrap sometimes we need to invent a size; Ideally we should be doing
|
|
* that stuff here instead of inside gtk_label_ensure_layout() */
|
|
if (label->wrap)
|
|
gtk_label_clear_layout (label);
|
|
gtk_label_ensure_layout (label, TRUE);
|
|
|
|
angle = gtk_label_get_angle (label);
|
|
|
|
/* Start off with the pixel extents of the rendered layout */
|
|
pango_layout_get_extents (label->layout, NULL, &required_rect);
|
|
required_rect.x = required_rect.y = 0;
|
|
|
|
if (label->single_line_mode || label->wrap)
|
|
required_rect.height = get_single_line_height (GTK_WIDGET (label), label->layout);
|
|
|
|
natural_rect = required_rect;
|
|
|
|
/* Calculate text width itself based on GtkLabel property rules */
|
|
get_label_width (label, &required_rect.width, &natural_rect.width);
|
|
|
|
/* Now that we have minimum and natural sizes in pango extents, apply a possible transform */
|
|
if (label->have_transform)
|
|
{
|
|
PangoLayout *layout = pango_layout_copy (label->layout);
|
|
PangoContext *context = pango_layout_get_context (label->layout);
|
|
const PangoMatrix *matrix = pango_context_get_matrix (context);
|
|
|
|
pango_layout_set_width (layout, -1);
|
|
pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_NONE);
|
|
|
|
pango_layout_get_extents (layout, NULL, &natural_rect);
|
|
g_object_unref (layout);
|
|
|
|
pango_matrix_transform_rectangle (matrix, &required_rect);
|
|
pango_matrix_transform_rectangle (matrix, &natural_rect);
|
|
|
|
/* Bump the natural size in case of ellipsize to ensure pango has
|
|
* enough space in the angles (note, we could alternatively set the
|
|
* layout to not ellipsize when we know we have been allocated our
|
|
* full natural size, or it may be that pango needs a fix here).
|
|
*/
|
|
if (label->ellipsize && angle != 0 && angle != 90 && angle != 180 && angle != 270 && angle != 360)
|
|
{
|
|
/* For some reason we only need this at about 110 degrees, and only
|
|
* when gaining in height
|
|
*/
|
|
natural_rect.height += ROTATION_ELLIPSIZE_PADDING * 2 * PANGO_SCALE;
|
|
natural_rect.width += ROTATION_ELLIPSIZE_PADDING * 2 * PANGO_SCALE;
|
|
}
|
|
}
|
|
|
|
required_rect.width = PANGO_PIXELS_CEIL (required_rect.width);
|
|
required_rect.height = PANGO_PIXELS_CEIL (required_rect.height);
|
|
|
|
natural_rect.width = PANGO_PIXELS_CEIL (natural_rect.width);
|
|
natural_rect.height = PANGO_PIXELS_CEIL (natural_rect.height);
|
|
|
|
if (orientation == GTK_ORIENTATION_HORIZONTAL)
|
|
{
|
|
/* Note, we cant use get_size_for_allocation() when rotating
|
|
* ellipsized labels.
|
|
*/
|
|
if (!(label->ellipsize && label->have_transform) &&
|
|
(angle == 90 || angle == 270))
|
|
{
|
|
/* Doing a h4w request on a rotated label here, return the
|
|
* required width for the minimum height.
|
|
*/
|
|
get_size_for_allocation (label,
|
|
GTK_ORIENTATION_VERTICAL,
|
|
required_rect.height,
|
|
minimum_size, natural_size);
|
|
|
|
}
|
|
else
|
|
{
|
|
/* Normal desired width */
|
|
*minimum_size = required_rect.width;
|
|
*natural_size = natural_rect.width;
|
|
}
|
|
|
|
*minimum_size += label->misc.xpad * 2;
|
|
*natural_size += label->misc.xpad * 2;
|
|
}
|
|
else /* GTK_ORIENTATION_VERTICAL */
|
|
{
|
|
/* Note, we cant use get_size_for_allocation() when rotating
|
|
* ellipsized labels.
|
|
*/
|
|
if (!(label->ellipsize && label->have_transform) &&
|
|
(angle == 0 || angle == 180))
|
|
{
|
|
/* Doing a w4h request on a label here, return the required
|
|
* height for the minimum width.
|
|
*/
|
|
get_size_for_allocation (label,
|
|
GTK_ORIENTATION_HORIZONTAL,
|
|
required_rect.width,
|
|
minimum_size, natural_size);
|
|
}
|
|
else
|
|
{
|
|
/* A vertically rotated label does w4h, so return the base
|
|
* desired height (text length)
|
|
*/
|
|
*minimum_size = required_rect.height;
|
|
*natural_size = natural_rect.height;
|
|
}
|
|
|
|
*minimum_size += label->misc.ypad * 2;
|
|
*natural_size += label->misc.ypad * 2;
|
|
}
|
|
|
|
/* Restore real allocated size of layout; sometimes size-requests
|
|
* are randomly called without a following allocation; for this case
|
|
* we need to make sure we dont have a mucked up layout because we
|
|
* went and guessed the wrap-size.
|
|
*/
|
|
if (label->wrap)
|
|
gtk_label_clear_layout (label);
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
}
|
|
|
|
|
|
static void
|
|
gtk_label_get_width (GtkSizeRequest *widget,
|
|
gint *minimum_size,
|
|
gint *natural_size)
|
|
{
|
|
gtk_label_get_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
|
|
}
|
|
|
|
static void
|
|
gtk_label_get_height (GtkSizeRequest *widget,
|
|
gint *minimum_size,
|
|
gint *natural_size)
|
|
{
|
|
gtk_label_get_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
|
|
}
|
|
|
|
static void
|
|
gtk_label_get_width_for_height (GtkSizeRequest *widget,
|
|
gint height,
|
|
gint *minimum_width,
|
|
gint *natural_width)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
gdouble angle = gtk_label_get_angle (label);
|
|
|
|
if (label->wrap && (angle == 90 || angle == 270))
|
|
{
|
|
if (label->wrap)
|
|
gtk_label_clear_layout (label);
|
|
|
|
get_size_for_allocation (label, GTK_ORIENTATION_VERTICAL,
|
|
MAX (1, height - (label->misc.ypad * 2)),
|
|
minimum_width, natural_width);
|
|
|
|
if (minimum_width)
|
|
*minimum_width += label->misc.xpad * 2;
|
|
|
|
if (natural_width)
|
|
*natural_width += label->misc.xpad * 2;
|
|
}
|
|
else
|
|
GTK_SIZE_REQUEST_GET_IFACE (widget)->get_width (widget, minimum_width, natural_width);
|
|
}
|
|
|
|
static void
|
|
gtk_label_get_height_for_width (GtkSizeRequest *widget,
|
|
gint width,
|
|
gint *minimum_height,
|
|
gint *natural_height)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
gdouble angle = gtk_label_get_angle (label);
|
|
|
|
if (label->wrap && (angle == 0 || angle == 180 || angle == 360))
|
|
{
|
|
if (label->wrap)
|
|
gtk_label_clear_layout (label);
|
|
|
|
get_size_for_allocation (label, GTK_ORIENTATION_HORIZONTAL,
|
|
MAX (1, width - label->misc.xpad * 2),
|
|
minimum_height, natural_height);
|
|
|
|
if (minimum_height)
|
|
*minimum_height += label->misc.ypad * 2;
|
|
|
|
if (natural_height)
|
|
*natural_height += label->misc.ypad * 2;
|
|
}
|
|
else
|
|
GTK_SIZE_REQUEST_GET_IFACE (widget)->get_height (widget, minimum_height, natural_height);
|
|
}
|
|
|
|
static void
|
|
gtk_label_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
GTK_WIDGET_CLASS (gtk_label_parent_class)->size_allocate (widget, allocation);
|
|
|
|
/* The layout may have been recently cleared in get_size_for_orientation(),
|
|
* but the width at that point may not be the same as the allocated width
|
|
*/
|
|
if (label->wrap)
|
|
gtk_label_clear_layout (label);
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
if (label->ellipsize)
|
|
{
|
|
if (label->layout)
|
|
{
|
|
PangoRectangle logical;
|
|
PangoRectangle bounds;
|
|
|
|
bounds.x = bounds.y = 0;
|
|
bounds.width = allocation->width - label->misc.xpad * 2;
|
|
bounds.height = allocation->height - label->misc.ypad * 2;
|
|
|
|
pango_layout_set_width (label->layout, -1);
|
|
pango_layout_get_pixel_extents (label->layout, NULL, &logical);
|
|
|
|
if (label->have_transform)
|
|
{
|
|
PangoContext *context = gtk_widget_get_pango_context (widget);
|
|
const PangoMatrix *matrix = pango_context_get_matrix (context);
|
|
|
|
const gdouble dx = matrix->xx; /* cos (M_PI * angle / 180) */
|
|
const gdouble dy = matrix->xy; /* sin (M_PI * angle / 180) */
|
|
if (fabs (dy) < 0.01)
|
|
{
|
|
if (logical.width > bounds.width)
|
|
pango_layout_set_width (label->layout, bounds.width * PANGO_SCALE);
|
|
}
|
|
else if (fabs (dx) < 0.01)
|
|
{
|
|
if (logical.width > bounds.height)
|
|
pango_layout_set_width (label->layout, bounds.height * PANGO_SCALE);
|
|
}
|
|
else
|
|
{
|
|
gdouble x0, y0, x1, y1, length;
|
|
gboolean vertical;
|
|
gint cy;
|
|
|
|
x0 = bounds.width / 2;
|
|
y0 = dx ? x0 * dy / dx : G_MAXDOUBLE;
|
|
vertical = fabs (y0) > bounds.height / 2;
|
|
|
|
if (vertical)
|
|
{
|
|
y0 = bounds.height/2;
|
|
x0 = dy ? y0 * dx / dy : G_MAXDOUBLE;
|
|
}
|
|
|
|
length = 2 * sqrt (x0 * x0 + y0 * y0);
|
|
pango_layout_set_width (label->layout, rint (length * PANGO_SCALE));
|
|
pango_layout_get_pixel_size (label->layout, NULL, &cy);
|
|
|
|
x1 = +dy * cy/2;
|
|
y1 = -dx * cy/2;
|
|
|
|
if (vertical)
|
|
{
|
|
y0 = bounds.height/2 + y1 - y0;
|
|
x0 = -y0 * dx/dy;
|
|
}
|
|
else
|
|
{
|
|
x0 = bounds.width/2 + x1 - x0;
|
|
y0 = -x0 * dy/dx;
|
|
}
|
|
|
|
length = length - sqrt (x0 * x0 + y0 * y0) * 2;
|
|
pango_layout_set_width (label->layout, rint (length * PANGO_SCALE));
|
|
}
|
|
}
|
|
else if (logical.width > bounds.width)
|
|
pango_layout_set_width (label->layout, bounds.width * PANGO_SCALE);
|
|
}
|
|
}
|
|
|
|
if (label->select_info && label->select_info->window)
|
|
{
|
|
gdk_window_move_resize (label->select_info->window,
|
|
allocation->x,
|
|
allocation->y,
|
|
allocation->width,
|
|
allocation->height);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_update_cursor (GtkLabel *label)
|
|
{
|
|
GtkWidget *widget;
|
|
|
|
if (!label->select_info)
|
|
return;
|
|
|
|
widget = GTK_WIDGET (label);
|
|
|
|
if (gtk_widget_get_realized (widget))
|
|
{
|
|
GdkDisplay *display;
|
|
GdkCursor *cursor;
|
|
|
|
if (gtk_widget_is_sensitive (widget))
|
|
{
|
|
display = gtk_widget_get_display (widget);
|
|
|
|
if (label->select_info->active_link)
|
|
cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
|
|
else if (label->select_info->selectable)
|
|
cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
|
|
else
|
|
cursor = NULL;
|
|
}
|
|
else
|
|
cursor = NULL;
|
|
|
|
gdk_window_set_cursor (label->select_info->window, cursor);
|
|
|
|
if (cursor)
|
|
gdk_cursor_unref (cursor);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_state_changed (GtkWidget *widget,
|
|
GtkStateType prev_state)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
|
|
if (label->select_info)
|
|
{
|
|
gtk_label_select_region (label, 0, 0);
|
|
gtk_label_update_cursor (label);
|
|
}
|
|
|
|
if (GTK_WIDGET_CLASS (gtk_label_parent_class)->state_changed)
|
|
GTK_WIDGET_CLASS (gtk_label_parent_class)->state_changed (widget, prev_state);
|
|
}
|
|
|
|
static void
|
|
gtk_label_style_set (GtkWidget *widget,
|
|
GtkStyle *previous_style)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
|
|
/* We have to clear the layout, fonts etc. may have changed */
|
|
gtk_label_clear_layout (label);
|
|
gtk_label_invalidate_wrap_width (label);
|
|
}
|
|
|
|
static void
|
|
gtk_label_direction_changed (GtkWidget *widget,
|
|
GtkTextDirection previous_dir)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
|
|
if (label->layout)
|
|
pango_layout_context_changed (label->layout);
|
|
|
|
GTK_WIDGET_CLASS (gtk_label_parent_class)->direction_changed (widget, previous_dir);
|
|
}
|
|
|
|
static void
|
|
get_layout_location (GtkLabel *label,
|
|
gint *xp,
|
|
gint *yp)
|
|
{
|
|
GtkMisc *misc;
|
|
GtkWidget *widget;
|
|
GtkLabelPrivate *priv;
|
|
gfloat xalign;
|
|
gint req_width, x, y;
|
|
gint req_height;
|
|
PangoRectangle logical;
|
|
gdouble angle;
|
|
|
|
misc = GTK_MISC (label);
|
|
widget = GTK_WIDGET (label);
|
|
priv = GTK_LABEL_GET_PRIVATE (label);
|
|
angle = gtk_label_get_angle (label);
|
|
|
|
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
|
|
xalign = misc->xalign;
|
|
else
|
|
xalign = 1.0 - misc->xalign;
|
|
|
|
pango_layout_get_extents (label->layout, NULL, &logical);
|
|
|
|
/* Do the wrap width delimiting before the transform
|
|
*/
|
|
if (label->wrap || label->ellipsize || priv->width_chars > 0)
|
|
{
|
|
int width;
|
|
|
|
width = pango_layout_get_width (label->layout);
|
|
|
|
if (width != -1)
|
|
logical.width = MIN (width, logical.width);
|
|
}
|
|
|
|
if (label->have_transform)
|
|
{
|
|
PangoContext *context = gtk_widget_get_pango_context (widget);
|
|
const PangoMatrix *matrix = pango_context_get_matrix (context);
|
|
pango_matrix_transform_rectangle (matrix, &logical);
|
|
}
|
|
|
|
pango_extents_to_pixels (&logical, NULL);
|
|
|
|
req_width = logical.width;
|
|
req_height = logical.height;
|
|
|
|
req_width += 2 * misc->xpad;
|
|
req_height += 2 * misc->ypad;
|
|
|
|
x = floor (widget->allocation.x + (gint)misc->xpad +
|
|
xalign * (widget->allocation.width - req_width));
|
|
|
|
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
|
|
x = MAX (x, widget->allocation.x + misc->xpad);
|
|
else
|
|
x = MIN (x, widget->allocation.x + widget->allocation.width - misc->xpad);
|
|
|
|
|
|
|
|
|
|
/* bgo#315462 - For single-line labels, *do* align the requisition with
|
|
* respect to the allocation, even if we are under-allocated. For multi-line
|
|
* labels, always show the top of the text when they are under-allocated. The
|
|
* rationale is this:
|
|
*
|
|
* - Single-line labels appear in GtkButtons, and it is very easy to get them
|
|
* to be smaller than their requisition. The button may clip the label, but
|
|
* the label will still be able to show most of itself and the focus
|
|
* rectangle. Also, it is fairly easy to read a single line of clipped text.
|
|
*
|
|
* - Multi-line labels should not be clipped to showing "something in the
|
|
* middle". You want to read the first line, at least, to get some context.
|
|
*/
|
|
if (pango_layout_get_line_count (label->layout) == 1)
|
|
y = floor (widget->allocation.y + (gint)misc->ypad
|
|
+ (widget->allocation.height - req_height) * misc->yalign);
|
|
else
|
|
y = floor (widget->allocation.y + (gint)misc->ypad
|
|
+ MAX (((widget->allocation.height - req_height) * misc->yalign),
|
|
0));
|
|
|
|
if (xp)
|
|
*xp = x;
|
|
|
|
if (yp)
|
|
*yp = y;
|
|
}
|
|
|
|
static void
|
|
draw_insertion_cursor (GtkLabel *label,
|
|
GdkRectangle *cursor_location,
|
|
gboolean is_primary,
|
|
PangoDirection direction,
|
|
gboolean draw_arrow)
|
|
{
|
|
GtkWidget *widget = GTK_WIDGET (label);
|
|
GtkTextDirection text_dir;
|
|
|
|
if (direction == PANGO_DIRECTION_LTR)
|
|
text_dir = GTK_TEXT_DIR_LTR;
|
|
else
|
|
text_dir = GTK_TEXT_DIR_RTL;
|
|
|
|
gtk_draw_insertion_cursor (widget, widget->window, &(widget->allocation),
|
|
cursor_location,
|
|
is_primary, text_dir, draw_arrow);
|
|
}
|
|
|
|
static PangoDirection
|
|
get_cursor_direction (GtkLabel *label)
|
|
{
|
|
GSList *l;
|
|
|
|
g_assert (label->select_info);
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
for (l = pango_layout_get_lines_readonly (label->layout); l; l = l->next)
|
|
{
|
|
PangoLayoutLine *line = l->data;
|
|
|
|
/* If label->select_info->selection_end is at the very end of
|
|
* the line, we don't know if the cursor is on this line or
|
|
* the next without looking ahead at the next line. (End
|
|
* of paragraph is different from line break.) But it's
|
|
* definitely in this paragraph, which is good enough
|
|
* to figure out the resolved direction.
|
|
*/
|
|
if (line->start_index + line->length >= label->select_info->selection_end)
|
|
return line->resolved_dir;
|
|
}
|
|
|
|
return PANGO_DIRECTION_LTR;
|
|
}
|
|
|
|
static void
|
|
gtk_label_draw_cursor (GtkLabel *label, gint xoffset, gint yoffset)
|
|
{
|
|
GtkWidget *widget;
|
|
|
|
if (label->select_info == NULL)
|
|
return;
|
|
|
|
widget = GTK_WIDGET (label);
|
|
|
|
if (gtk_widget_is_drawable (widget))
|
|
{
|
|
PangoDirection keymap_direction;
|
|
PangoDirection cursor_direction;
|
|
PangoRectangle strong_pos, weak_pos;
|
|
gboolean split_cursor;
|
|
PangoRectangle *cursor1 = NULL;
|
|
PangoRectangle *cursor2 = NULL;
|
|
GdkRectangle cursor_location;
|
|
PangoDirection dir1 = PANGO_DIRECTION_NEUTRAL;
|
|
PangoDirection dir2 = PANGO_DIRECTION_NEUTRAL;
|
|
|
|
keymap_direction = gdk_keymap_get_direction (gdk_keymap_get_for_display (gtk_widget_get_display (widget)));
|
|
cursor_direction = get_cursor_direction (label);
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
pango_layout_get_cursor_pos (label->layout, label->select_info->selection_end,
|
|
&strong_pos, &weak_pos);
|
|
|
|
g_object_get (gtk_widget_get_settings (widget),
|
|
"gtk-split-cursor", &split_cursor,
|
|
NULL);
|
|
|
|
dir1 = cursor_direction;
|
|
|
|
if (split_cursor)
|
|
{
|
|
cursor1 = &strong_pos;
|
|
|
|
if (strong_pos.x != weak_pos.x ||
|
|
strong_pos.y != weak_pos.y)
|
|
{
|
|
dir2 = (cursor_direction == PANGO_DIRECTION_LTR) ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR;
|
|
cursor2 = &weak_pos;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (keymap_direction == cursor_direction)
|
|
cursor1 = &strong_pos;
|
|
else
|
|
cursor1 = &weak_pos;
|
|
}
|
|
|
|
cursor_location.x = xoffset + PANGO_PIXELS (cursor1->x);
|
|
cursor_location.y = yoffset + PANGO_PIXELS (cursor1->y);
|
|
cursor_location.width = 0;
|
|
cursor_location.height = PANGO_PIXELS (cursor1->height);
|
|
|
|
draw_insertion_cursor (label,
|
|
&cursor_location, TRUE, dir1,
|
|
dir2 != PANGO_DIRECTION_NEUTRAL);
|
|
|
|
if (dir2 != PANGO_DIRECTION_NEUTRAL)
|
|
{
|
|
cursor_location.x = xoffset + PANGO_PIXELS (cursor2->x);
|
|
cursor_location.y = yoffset + PANGO_PIXELS (cursor2->y);
|
|
cursor_location.width = 0;
|
|
cursor_location.height = PANGO_PIXELS (cursor2->height);
|
|
|
|
draw_insertion_cursor (label,
|
|
&cursor_location, FALSE, dir2,
|
|
TRUE);
|
|
}
|
|
}
|
|
}
|
|
|
|
static GtkLabelLink *
|
|
gtk_label_get_focus_link (GtkLabel *label)
|
|
{
|
|
GtkLabelSelectionInfo *info = label->select_info;
|
|
GList *l;
|
|
|
|
if (!info)
|
|
return NULL;
|
|
|
|
if (info->selection_anchor != info->selection_end)
|
|
return NULL;
|
|
|
|
for (l = info->links; l; l = l->next)
|
|
{
|
|
GtkLabelLink *link = l->data;
|
|
if (link->start <= info->selection_anchor &&
|
|
info->selection_anchor <= link->end)
|
|
return link;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static gint
|
|
gtk_label_expose (GtkWidget *widget,
|
|
GdkEventExpose *event)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
GtkLabelSelectionInfo *info = label->select_info;
|
|
gint x, y;
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
if (gtk_widget_get_visible (widget) && gtk_widget_get_mapped (widget) &&
|
|
label->text && (*label->text != '\0'))
|
|
{
|
|
get_layout_location (label, &x, &y);
|
|
|
|
gtk_paint_layout (widget->style,
|
|
widget->window,
|
|
gtk_widget_get_state (widget),
|
|
FALSE,
|
|
&event->area,
|
|
widget,
|
|
"label",
|
|
x, y,
|
|
label->layout);
|
|
|
|
if (info &&
|
|
(info->selection_anchor != info->selection_end))
|
|
{
|
|
gint range[2];
|
|
cairo_region_t *clip;
|
|
GtkStateType state;
|
|
|
|
range[0] = info->selection_anchor;
|
|
range[1] = info->selection_end;
|
|
|
|
if (range[0] > range[1])
|
|
{
|
|
gint tmp = range[0];
|
|
range[0] = range[1];
|
|
range[1] = tmp;
|
|
}
|
|
|
|
clip = gdk_pango_layout_get_clip_region (label->layout,
|
|
x, y,
|
|
range,
|
|
1);
|
|
cairo_region_intersect (clip, event->region);
|
|
|
|
/* FIXME should use gtk_paint, but it can't use a clip
|
|
* region
|
|
*/
|
|
|
|
gdk_gc_set_clip_region (widget->style->black_gc, clip);
|
|
|
|
|
|
state = GTK_STATE_SELECTED;
|
|
if (!gtk_widget_has_focus (widget))
|
|
state = GTK_STATE_ACTIVE;
|
|
|
|
gdk_draw_layout_with_colors (widget->window,
|
|
widget->style->black_gc,
|
|
x, y,
|
|
label->layout,
|
|
&widget->style->text[state],
|
|
&widget->style->base[state]);
|
|
|
|
gdk_gc_set_clip_region (widget->style->black_gc, NULL);
|
|
cairo_region_destroy (clip);
|
|
}
|
|
else if (info)
|
|
{
|
|
GtkLabelLink *focus_link;
|
|
GtkLabelLink *active_link;
|
|
gint range[2];
|
|
cairo_region_t *clip;
|
|
GdkRectangle rect;
|
|
GdkColor *text_color;
|
|
GdkColor *base_color;
|
|
GdkColor *link_color;
|
|
GdkColor *visited_link_color;
|
|
|
|
if (info->selectable && gtk_widget_has_focus (widget))
|
|
gtk_label_draw_cursor (label, x, y);
|
|
|
|
focus_link = gtk_label_get_focus_link (label);
|
|
active_link = info->active_link;
|
|
|
|
if (active_link)
|
|
{
|
|
range[0] = active_link->start;
|
|
range[1] = active_link->end;
|
|
|
|
clip = gdk_pango_layout_get_clip_region (label->layout,
|
|
x, y,
|
|
range,
|
|
1);
|
|
gdk_gc_set_clip_region (widget->style->black_gc, clip);
|
|
|
|
gtk_label_get_link_colors (widget, &link_color, &visited_link_color);
|
|
if (active_link->visited)
|
|
text_color = visited_link_color;
|
|
else
|
|
text_color = link_color;
|
|
if (info->link_clicked)
|
|
base_color = &widget->style->base[GTK_STATE_ACTIVE];
|
|
else
|
|
base_color = &widget->style->base[GTK_STATE_PRELIGHT];
|
|
gdk_draw_layout_with_colors (widget->window,
|
|
widget->style->black_gc,
|
|
x, y,
|
|
label->layout,
|
|
text_color,
|
|
base_color);
|
|
gdk_color_free (link_color);
|
|
gdk_color_free (visited_link_color);
|
|
|
|
gdk_gc_set_clip_region (widget->style->black_gc, NULL);
|
|
cairo_region_destroy (clip);
|
|
}
|
|
|
|
if (focus_link && gtk_widget_has_focus (widget))
|
|
{
|
|
range[0] = focus_link->start;
|
|
range[1] = focus_link->end;
|
|
|
|
clip = gdk_pango_layout_get_clip_region (label->layout,
|
|
x, y,
|
|
range,
|
|
1);
|
|
cairo_region_get_extents (clip, &rect);
|
|
|
|
gtk_paint_focus (widget->style, widget->window, gtk_widget_get_state (widget),
|
|
&event->area, widget, "label",
|
|
rect.x, rect.y, rect.width, rect.height);
|
|
|
|
cairo_region_destroy (clip);
|
|
}
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
separate_uline_pattern (const gchar *str,
|
|
guint *accel_key,
|
|
gchar **new_str,
|
|
gchar **pattern)
|
|
{
|
|
gboolean underscore;
|
|
const gchar *src;
|
|
gchar *dest;
|
|
gchar *pattern_dest;
|
|
|
|
*accel_key = GDK_VoidSymbol;
|
|
*new_str = g_new (gchar, strlen (str) + 1);
|
|
*pattern = g_new (gchar, g_utf8_strlen (str, -1) + 1);
|
|
|
|
underscore = FALSE;
|
|
|
|
src = str;
|
|
dest = *new_str;
|
|
pattern_dest = *pattern;
|
|
|
|
while (*src)
|
|
{
|
|
gunichar c;
|
|
const gchar *next_src;
|
|
|
|
c = g_utf8_get_char (src);
|
|
if (c == (gunichar)-1)
|
|
{
|
|
g_warning ("Invalid input string");
|
|
g_free (*new_str);
|
|
g_free (*pattern);
|
|
|
|
return FALSE;
|
|
}
|
|
next_src = g_utf8_next_char (src);
|
|
|
|
if (underscore)
|
|
{
|
|
if (c == '_')
|
|
*pattern_dest++ = ' ';
|
|
else
|
|
{
|
|
*pattern_dest++ = '_';
|
|
if (*accel_key == GDK_VoidSymbol)
|
|
*accel_key = gdk_keyval_to_lower (gdk_unicode_to_keyval (c));
|
|
}
|
|
|
|
while (src < next_src)
|
|
*dest++ = *src++;
|
|
|
|
underscore = FALSE;
|
|
}
|
|
else
|
|
{
|
|
if (c == '_')
|
|
{
|
|
underscore = TRUE;
|
|
src = next_src;
|
|
}
|
|
else
|
|
{
|
|
while (src < next_src)
|
|
*dest++ = *src++;
|
|
|
|
*pattern_dest++ = ' ';
|
|
}
|
|
}
|
|
}
|
|
|
|
*dest = 0;
|
|
*pattern_dest = 0;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_uline_text_internal (GtkLabel *label,
|
|
const gchar *str)
|
|
{
|
|
guint accel_key = GDK_VoidSymbol;
|
|
gchar *new_str;
|
|
gchar *pattern;
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
g_return_if_fail (str != NULL);
|
|
|
|
/* Split text into the base text and a separate pattern
|
|
* of underscores.
|
|
*/
|
|
if (!separate_uline_pattern (str, &accel_key, &new_str, &pattern))
|
|
return;
|
|
|
|
gtk_label_set_text_internal (label, new_str);
|
|
gtk_label_set_pattern_internal (label, pattern, TRUE);
|
|
label->mnemonic_keyval = accel_key;
|
|
|
|
g_free (pattern);
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_text_with_mnemonic:
|
|
* @label: a #GtkLabel
|
|
* @str: a string
|
|
*
|
|
* Sets the label's text from the string @str.
|
|
* If characters in @str are preceded by an underscore, they are underlined
|
|
* indicating that they represent a keyboard accelerator called a mnemonic.
|
|
* The mnemonic key can be used to activate another widget, chosen
|
|
* automatically, or explicitly using gtk_label_set_mnemonic_widget().
|
|
**/
|
|
void
|
|
gtk_label_set_text_with_mnemonic (GtkLabel *label,
|
|
const gchar *str)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
g_return_if_fail (str != NULL);
|
|
|
|
g_object_freeze_notify (G_OBJECT (label));
|
|
|
|
gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
|
|
gtk_label_set_use_markup_internal (label, FALSE);
|
|
gtk_label_set_use_underline_internal (label, TRUE);
|
|
|
|
gtk_label_recalculate (label);
|
|
|
|
g_object_thaw_notify (G_OBJECT (label));
|
|
}
|
|
|
|
static void
|
|
gtk_label_realize (GtkWidget *widget)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
GTK_WIDGET_CLASS (gtk_label_parent_class)->realize (widget);
|
|
|
|
if (label->select_info)
|
|
gtk_label_create_window (label);
|
|
}
|
|
|
|
static void
|
|
gtk_label_unrealize (GtkWidget *widget)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
if (label->select_info)
|
|
gtk_label_destroy_window (label);
|
|
|
|
GTK_WIDGET_CLASS (gtk_label_parent_class)->unrealize (widget);
|
|
}
|
|
|
|
static void
|
|
gtk_label_map (GtkWidget *widget)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
GTK_WIDGET_CLASS (gtk_label_parent_class)->map (widget);
|
|
|
|
if (label->select_info)
|
|
gdk_window_show (label->select_info->window);
|
|
}
|
|
|
|
static void
|
|
gtk_label_unmap (GtkWidget *widget)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
if (label->select_info)
|
|
gdk_window_hide (label->select_info->window);
|
|
|
|
GTK_WIDGET_CLASS (gtk_label_parent_class)->unmap (widget);
|
|
}
|
|
|
|
static void
|
|
window_to_layout_coords (GtkLabel *label,
|
|
gint *x,
|
|
gint *y)
|
|
{
|
|
gint lx, ly;
|
|
GtkWidget *widget;
|
|
|
|
widget = GTK_WIDGET (label);
|
|
|
|
/* get layout location in widget->window coords */
|
|
get_layout_location (label, &lx, &ly);
|
|
|
|
if (x)
|
|
{
|
|
*x += widget->allocation.x; /* go to widget->window */
|
|
*x -= lx; /* go to layout */
|
|
}
|
|
|
|
if (y)
|
|
{
|
|
*y += widget->allocation.y; /* go to widget->window */
|
|
*y -= ly; /* go to layout */
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
static void
|
|
layout_to_window_coords (GtkLabel *label,
|
|
gint *x,
|
|
gint *y)
|
|
{
|
|
gint lx, ly;
|
|
GtkWidget *widget;
|
|
|
|
widget = GTK_WIDGET (label);
|
|
|
|
/* get layout location in widget->window coords */
|
|
get_layout_location (label, &lx, &ly);
|
|
|
|
if (x)
|
|
{
|
|
*x += lx; /* go to widget->window */
|
|
*x -= widget->allocation.x; /* go to selection window */
|
|
}
|
|
|
|
if (y)
|
|
{
|
|
*y += ly; /* go to widget->window */
|
|
*y -= widget->allocation.y; /* go to selection window */
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static gboolean
|
|
get_layout_index (GtkLabel *label,
|
|
gint x,
|
|
gint y,
|
|
gint *index)
|
|
{
|
|
gint trailing = 0;
|
|
const gchar *cluster;
|
|
const gchar *cluster_end;
|
|
gboolean inside;
|
|
|
|
*index = 0;
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
window_to_layout_coords (label, &x, &y);
|
|
|
|
x *= PANGO_SCALE;
|
|
y *= PANGO_SCALE;
|
|
|
|
inside = pango_layout_xy_to_index (label->layout,
|
|
x, y,
|
|
index, &trailing);
|
|
|
|
cluster = label->text + *index;
|
|
cluster_end = cluster;
|
|
while (trailing)
|
|
{
|
|
cluster_end = g_utf8_next_char (cluster_end);
|
|
--trailing;
|
|
}
|
|
|
|
*index += (cluster_end - cluster);
|
|
|
|
return inside;
|
|
}
|
|
|
|
static void
|
|
gtk_label_select_word (GtkLabel *label)
|
|
{
|
|
gint min, max;
|
|
|
|
gint start_index = gtk_label_move_backward_word (label, label->select_info->selection_end);
|
|
gint end_index = gtk_label_move_forward_word (label, label->select_info->selection_end);
|
|
|
|
min = MIN (label->select_info->selection_anchor,
|
|
label->select_info->selection_end);
|
|
max = MAX (label->select_info->selection_anchor,
|
|
label->select_info->selection_end);
|
|
|
|
min = MIN (min, start_index);
|
|
max = MAX (max, end_index);
|
|
|
|
gtk_label_select_region_index (label, min, max);
|
|
}
|
|
|
|
static void
|
|
gtk_label_grab_focus (GtkWidget *widget)
|
|
{
|
|
GtkLabel *label;
|
|
gboolean select_on_focus;
|
|
GtkLabelLink *link;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
if (label->select_info == NULL)
|
|
return;
|
|
|
|
GTK_WIDGET_CLASS (gtk_label_parent_class)->grab_focus (widget);
|
|
|
|
if (label->select_info->selectable)
|
|
{
|
|
g_object_get (gtk_widget_get_settings (widget),
|
|
"gtk-label-select-on-focus",
|
|
&select_on_focus,
|
|
NULL);
|
|
|
|
if (select_on_focus && !label->in_click)
|
|
gtk_label_select_region (label, 0, -1);
|
|
}
|
|
else
|
|
{
|
|
if (label->select_info->links && !label->in_click)
|
|
{
|
|
link = label->select_info->links->data;
|
|
label->select_info->selection_anchor = link->start;
|
|
label->select_info->selection_end = link->start;
|
|
}
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gtk_label_focus (GtkWidget *widget,
|
|
GtkDirectionType direction)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
GtkLabelSelectionInfo *info = label->select_info;
|
|
GtkLabelLink *focus_link;
|
|
GList *l;
|
|
|
|
if (!gtk_widget_is_focus (widget))
|
|
{
|
|
gtk_widget_grab_focus (widget);
|
|
if (info)
|
|
{
|
|
focus_link = gtk_label_get_focus_link (label);
|
|
if (focus_link && direction == GTK_DIR_TAB_BACKWARD)
|
|
{
|
|
l = g_list_last (info->links);
|
|
focus_link = l->data;
|
|
info->selection_anchor = focus_link->start;
|
|
info->selection_end = focus_link->start;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
if (!info)
|
|
return FALSE;
|
|
|
|
if (info->selectable)
|
|
{
|
|
gint index;
|
|
|
|
if (info->selection_anchor != info->selection_end)
|
|
goto out;
|
|
|
|
index = info->selection_anchor;
|
|
|
|
if (direction == GTK_DIR_TAB_FORWARD)
|
|
for (l = info->links; l; l = l->next)
|
|
{
|
|
GtkLabelLink *link = l->data;
|
|
|
|
if (link->start > index)
|
|
{
|
|
gtk_label_select_region_index (label, link->start, link->start);
|
|
return TRUE;
|
|
}
|
|
}
|
|
else if (direction == GTK_DIR_TAB_BACKWARD)
|
|
for (l = g_list_last (info->links); l; l = l->prev)
|
|
{
|
|
GtkLabelLink *link = l->data;
|
|
|
|
if (link->end < index)
|
|
{
|
|
gtk_label_select_region_index (label, link->start, link->start);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
goto out;
|
|
}
|
|
else
|
|
{
|
|
focus_link = gtk_label_get_focus_link (label);
|
|
switch (direction)
|
|
{
|
|
case GTK_DIR_TAB_FORWARD:
|
|
if (focus_link)
|
|
{
|
|
l = g_list_find (info->links, focus_link);
|
|
l = l->next;
|
|
}
|
|
else
|
|
l = info->links;
|
|
break;
|
|
|
|
case GTK_DIR_TAB_BACKWARD:
|
|
if (focus_link)
|
|
{
|
|
l = g_list_find (info->links, focus_link);
|
|
l = l->prev;
|
|
}
|
|
else
|
|
l = g_list_last (info->links);
|
|
break;
|
|
|
|
default:
|
|
goto out;
|
|
}
|
|
|
|
if (l)
|
|
{
|
|
focus_link = l->data;
|
|
info->selection_anchor = focus_link->start;
|
|
info->selection_end = focus_link->start;
|
|
gtk_widget_queue_draw (widget);
|
|
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
out:
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_label_button_press (GtkWidget *widget,
|
|
GdkEventButton *event)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
GtkLabelSelectionInfo *info = label->select_info;
|
|
gint index = 0;
|
|
gint min, max;
|
|
|
|
if (info == NULL)
|
|
return FALSE;
|
|
|
|
if (info->active_link)
|
|
{
|
|
if (event->button == 1)
|
|
{
|
|
info->link_clicked = 1;
|
|
gtk_widget_queue_draw (widget);
|
|
}
|
|
else if (event->button == 3 && event->type == GDK_BUTTON_PRESS)
|
|
{
|
|
info->link_clicked = 1;
|
|
gtk_label_do_popup (label, event);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
if (!info->selectable)
|
|
return FALSE;
|
|
|
|
info->in_drag = FALSE;
|
|
info->select_words = FALSE;
|
|
|
|
if (event->button == 1)
|
|
{
|
|
if (!gtk_widget_has_focus (widget))
|
|
{
|
|
label->in_click = TRUE;
|
|
gtk_widget_grab_focus (widget);
|
|
label->in_click = FALSE;
|
|
}
|
|
|
|
if (event->type == GDK_3BUTTON_PRESS)
|
|
{
|
|
gtk_label_select_region_index (label, 0, strlen (label->text));
|
|
return TRUE;
|
|
}
|
|
|
|
if (event->type == GDK_2BUTTON_PRESS)
|
|
{
|
|
info->select_words = TRUE;
|
|
gtk_label_select_word (label);
|
|
return TRUE;
|
|
}
|
|
|
|
get_layout_index (label, event->x, event->y, &index);
|
|
|
|
min = MIN (info->selection_anchor, info->selection_end);
|
|
max = MAX (info->selection_anchor, info->selection_end);
|
|
|
|
if ((info->selection_anchor != info->selection_end) &&
|
|
(event->state & GDK_SHIFT_MASK))
|
|
{
|
|
/* extend (same as motion) */
|
|
min = MIN (min, index);
|
|
max = MAX (max, index);
|
|
|
|
/* ensure the anchor is opposite index */
|
|
if (index == min)
|
|
{
|
|
gint tmp = min;
|
|
min = max;
|
|
max = tmp;
|
|
}
|
|
|
|
gtk_label_select_region_index (label, min, max);
|
|
}
|
|
else
|
|
{
|
|
if (event->type == GDK_3BUTTON_PRESS)
|
|
gtk_label_select_region_index (label, 0, strlen (label->text));
|
|
else if (event->type == GDK_2BUTTON_PRESS)
|
|
gtk_label_select_word (label);
|
|
else if (min < max && min <= index && index <= max)
|
|
{
|
|
info->in_drag = TRUE;
|
|
info->drag_start_x = event->x;
|
|
info->drag_start_y = event->y;
|
|
}
|
|
else
|
|
/* start a replacement */
|
|
gtk_label_select_region_index (label, index, index);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
else if (event->button == 3 && event->type == GDK_BUTTON_PRESS)
|
|
{
|
|
gtk_label_do_popup (label, event);
|
|
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_label_button_release (GtkWidget *widget,
|
|
GdkEventButton *event)
|
|
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
GtkLabelSelectionInfo *info = label->select_info;
|
|
gint index;
|
|
|
|
if (info == NULL)
|
|
return FALSE;
|
|
|
|
if (info->in_drag)
|
|
{
|
|
info->in_drag = 0;
|
|
|
|
get_layout_index (label, event->x, event->y, &index);
|
|
gtk_label_select_region_index (label, index, index);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
if (event->button != 1)
|
|
return FALSE;
|
|
|
|
if (info->active_link &&
|
|
info->selection_anchor == info->selection_end &&
|
|
info->link_clicked)
|
|
{
|
|
emit_activate_link (label, info->active_link);
|
|
info->link_clicked = 0;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* The goal here is to return TRUE iff we ate the
|
|
* button press to start selecting.
|
|
*/
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
connect_mnemonics_visible_notify (GtkLabel *label)
|
|
{
|
|
GtkLabelPrivate *priv = GTK_LABEL_GET_PRIVATE (label);
|
|
GtkWidget *toplevel;
|
|
gboolean connected;
|
|
|
|
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (label));
|
|
|
|
if (!GTK_IS_WINDOW (toplevel))
|
|
return;
|
|
|
|
/* always set up this widgets initial value */
|
|
priv->mnemonics_visible =
|
|
gtk_window_get_mnemonics_visible (GTK_WINDOW (toplevel));
|
|
|
|
connected =
|
|
GPOINTER_TO_INT (g_object_get_data (G_OBJECT (toplevel),
|
|
"gtk-label-mnemonics-visible-connected"));
|
|
|
|
if (!connected)
|
|
{
|
|
g_signal_connect (toplevel,
|
|
"notify::mnemonics-visible",
|
|
G_CALLBACK (label_mnemonics_visible_changed),
|
|
label);
|
|
g_object_set_data (G_OBJECT (toplevel),
|
|
"gtk-label-mnemonics-visible-connected",
|
|
GINT_TO_POINTER (1));
|
|
}
|
|
}
|
|
|
|
static void
|
|
drag_begin_cb (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
gpointer data)
|
|
{
|
|
GtkLabel *label;
|
|
GdkPixmap *pixmap = NULL;
|
|
|
|
g_signal_handlers_disconnect_by_func (widget, drag_begin_cb, NULL);
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
if ((label->select_info->selection_anchor !=
|
|
label->select_info->selection_end) &&
|
|
label->text)
|
|
{
|
|
gint start, end;
|
|
gint len;
|
|
|
|
start = MIN (label->select_info->selection_anchor,
|
|
label->select_info->selection_end);
|
|
end = MAX (label->select_info->selection_anchor,
|
|
label->select_info->selection_end);
|
|
|
|
len = strlen (label->text);
|
|
|
|
if (end > len)
|
|
end = len;
|
|
|
|
if (start > len)
|
|
start = len;
|
|
|
|
pixmap = _gtk_text_util_create_drag_icon (widget,
|
|
label->text + start,
|
|
end - start);
|
|
}
|
|
|
|
if (pixmap)
|
|
gtk_drag_set_icon_pixmap (context,
|
|
gdk_drawable_get_colormap (pixmap),
|
|
pixmap,
|
|
NULL,
|
|
-2, -2);
|
|
else
|
|
gtk_drag_set_icon_default (context);
|
|
|
|
if (pixmap)
|
|
g_object_unref (pixmap);
|
|
}
|
|
|
|
static gboolean
|
|
gtk_label_motion (GtkWidget *widget,
|
|
GdkEventMotion *event)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
GtkLabelSelectionInfo *info = label->select_info;
|
|
gint index;
|
|
|
|
if (info == NULL)
|
|
return FALSE;
|
|
|
|
if (info->links && !info->in_drag)
|
|
{
|
|
GList *l;
|
|
GtkLabelLink *link;
|
|
gboolean found = FALSE;
|
|
|
|
if (info->selection_anchor == info->selection_end)
|
|
{
|
|
if (get_layout_index (label, event->x, event->y, &index))
|
|
{
|
|
for (l = info->links; l != NULL; l = l->next)
|
|
{
|
|
link = l->data;
|
|
if (index >= link->start && index <= link->end)
|
|
{
|
|
found = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (found)
|
|
{
|
|
if (info->active_link != link)
|
|
{
|
|
info->link_clicked = 0;
|
|
info->active_link = link;
|
|
gtk_label_update_cursor (label);
|
|
gtk_widget_queue_draw (widget);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (info->active_link != NULL)
|
|
{
|
|
info->link_clicked = 0;
|
|
info->active_link = NULL;
|
|
gtk_label_update_cursor (label);
|
|
gtk_widget_queue_draw (widget);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!info->selectable)
|
|
return FALSE;
|
|
|
|
if ((event->state & GDK_BUTTON1_MASK) == 0)
|
|
return FALSE;
|
|
|
|
if (info->in_drag)
|
|
{
|
|
if (gtk_drag_check_threshold (widget,
|
|
info->drag_start_x,
|
|
info->drag_start_y,
|
|
event->x, event->y))
|
|
{
|
|
GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
|
|
|
|
gtk_target_list_add_text_targets (target_list, 0);
|
|
|
|
g_signal_connect (widget, "drag-begin",
|
|
G_CALLBACK (drag_begin_cb), NULL);
|
|
gtk_drag_begin (widget, target_list,
|
|
GDK_ACTION_COPY,
|
|
1, (GdkEvent *)event);
|
|
|
|
info->in_drag = FALSE;
|
|
|
|
gtk_target_list_unref (target_list);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
gint x, y;
|
|
|
|
gdk_window_get_device_position (info->window, event->device, &x, &y, NULL);
|
|
get_layout_index (label, x, y, &index);
|
|
|
|
if (info->select_words)
|
|
{
|
|
gint min, max;
|
|
gint old_min, old_max;
|
|
gint anchor, end;
|
|
|
|
min = gtk_label_move_backward_word (label, index);
|
|
max = gtk_label_move_forward_word (label, index);
|
|
|
|
anchor = info->selection_anchor;
|
|
end = info->selection_end;
|
|
|
|
old_min = MIN (anchor, end);
|
|
old_max = MAX (anchor, end);
|
|
|
|
if (min < old_min)
|
|
{
|
|
anchor = min;
|
|
end = old_max;
|
|
}
|
|
else if (old_max < max)
|
|
{
|
|
anchor = max;
|
|
end = old_min;
|
|
}
|
|
else if (anchor == old_min)
|
|
{
|
|
if (anchor != min)
|
|
anchor = max;
|
|
}
|
|
else
|
|
{
|
|
if (anchor != max)
|
|
anchor = min;
|
|
}
|
|
|
|
gtk_label_select_region_index (label, anchor, end);
|
|
}
|
|
else
|
|
gtk_label_select_region_index (label, info->selection_anchor, index);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_label_leave_notify (GtkWidget *widget,
|
|
GdkEventCrossing *event)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
|
|
if (label->select_info)
|
|
{
|
|
label->select_info->active_link = NULL;
|
|
gtk_label_update_cursor (label);
|
|
gtk_widget_queue_draw (widget);
|
|
}
|
|
|
|
if (GTK_WIDGET_CLASS (gtk_label_parent_class)->leave_notify_event)
|
|
return GTK_WIDGET_CLASS (gtk_label_parent_class)->leave_notify_event (widget, event);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_label_create_window (GtkLabel *label)
|
|
{
|
|
GtkWidget *widget;
|
|
GdkWindowAttr attributes;
|
|
gint attributes_mask;
|
|
|
|
g_assert (label->select_info);
|
|
widget = GTK_WIDGET (label);
|
|
g_assert (gtk_widget_get_realized (widget));
|
|
|
|
if (label->select_info->window)
|
|
return;
|
|
|
|
attributes.x = widget->allocation.x;
|
|
attributes.y = widget->allocation.y;
|
|
attributes.width = widget->allocation.width;
|
|
attributes.height = widget->allocation.height;
|
|
attributes.window_type = GDK_WINDOW_CHILD;
|
|
attributes.wclass = GDK_INPUT_ONLY;
|
|
attributes.override_redirect = TRUE;
|
|
attributes.event_mask = gtk_widget_get_events (widget) |
|
|
GDK_BUTTON_PRESS_MASK |
|
|
GDK_BUTTON_RELEASE_MASK |
|
|
GDK_LEAVE_NOTIFY_MASK |
|
|
GDK_BUTTON_MOTION_MASK |
|
|
GDK_POINTER_MOTION_MASK |
|
|
GDK_POINTER_MOTION_HINT_MASK;
|
|
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_NOREDIR;
|
|
if (gtk_widget_is_sensitive (widget))
|
|
{
|
|
attributes.cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
|
|
GDK_XTERM);
|
|
attributes_mask |= GDK_WA_CURSOR;
|
|
}
|
|
|
|
|
|
label->select_info->window = gdk_window_new (widget->window,
|
|
&attributes, attributes_mask);
|
|
gdk_window_set_user_data (label->select_info->window, widget);
|
|
|
|
if (attributes_mask & GDK_WA_CURSOR)
|
|
gdk_cursor_unref (attributes.cursor);
|
|
}
|
|
|
|
static void
|
|
gtk_label_destroy_window (GtkLabel *label)
|
|
{
|
|
g_assert (label->select_info);
|
|
|
|
if (label->select_info->window == NULL)
|
|
return;
|
|
|
|
gdk_window_set_user_data (label->select_info->window, NULL);
|
|
gdk_window_destroy (label->select_info->window);
|
|
label->select_info->window = NULL;
|
|
}
|
|
|
|
static void
|
|
gtk_label_ensure_select_info (GtkLabel *label)
|
|
{
|
|
if (label->select_info == NULL)
|
|
{
|
|
label->select_info = g_new0 (GtkLabelSelectionInfo, 1);
|
|
|
|
gtk_widget_set_can_focus (GTK_WIDGET (label), TRUE);
|
|
|
|
if (gtk_widget_get_realized (GTK_WIDGET (label)))
|
|
gtk_label_create_window (label);
|
|
|
|
if (gtk_widget_get_mapped (GTK_WIDGET (label)))
|
|
gdk_window_show (label->select_info->window);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_clear_select_info (GtkLabel *label)
|
|
{
|
|
if (label->select_info == NULL)
|
|
return;
|
|
|
|
if (!label->select_info->selectable && !label->select_info->links)
|
|
{
|
|
gtk_label_destroy_window (label);
|
|
|
|
g_free (label->select_info);
|
|
label->select_info = NULL;
|
|
|
|
gtk_widget_set_can_focus (GTK_WIDGET (label), FALSE);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_selectable:
|
|
* @label: a #GtkLabel
|
|
* @setting: %TRUE to allow selecting text in the label
|
|
*
|
|
* Selectable labels allow the user to select text from the label, for
|
|
* copy-and-paste.
|
|
**/
|
|
void
|
|
gtk_label_set_selectable (GtkLabel *label,
|
|
gboolean setting)
|
|
{
|
|
gboolean old_setting;
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
setting = setting != FALSE;
|
|
old_setting = label->select_info && label->select_info->selectable;
|
|
|
|
if (setting)
|
|
{
|
|
gtk_label_ensure_select_info (label);
|
|
label->select_info->selectable = TRUE;
|
|
gtk_label_update_cursor (label);
|
|
}
|
|
else
|
|
{
|
|
if (old_setting)
|
|
{
|
|
/* unselect, to give up the selection */
|
|
gtk_label_select_region (label, 0, 0);
|
|
|
|
label->select_info->selectable = FALSE;
|
|
gtk_label_clear_select_info (label);
|
|
gtk_label_update_cursor (label);
|
|
}
|
|
}
|
|
if (setting != old_setting)
|
|
{
|
|
g_object_freeze_notify (G_OBJECT (label));
|
|
g_object_notify (G_OBJECT (label), "selectable");
|
|
g_object_notify (G_OBJECT (label), "cursor-position");
|
|
g_object_notify (G_OBJECT (label), "selection-bound");
|
|
g_object_thaw_notify (G_OBJECT (label));
|
|
gtk_widget_queue_draw (GTK_WIDGET (label));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_selectable:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Gets the value set by gtk_label_set_selectable().
|
|
*
|
|
* Return value: %TRUE if the user can copy text from the label
|
|
**/
|
|
gboolean
|
|
gtk_label_get_selectable (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
|
|
|
|
return label->select_info && label->select_info->selectable;
|
|
}
|
|
|
|
static void
|
|
free_angle (gpointer angle)
|
|
{
|
|
g_slice_free (gdouble, angle);
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_angle:
|
|
* @label: a #GtkLabel
|
|
* @angle: the angle that the baseline of the label makes with
|
|
* the horizontal, in degrees, measured counterclockwise
|
|
*
|
|
* Sets the angle of rotation for the label. An angle of 90 reads from
|
|
* from bottom to top, an angle of 270, from top to bottom. The angle
|
|
* setting for the label is ignored if the label is selectable,
|
|
* wrapped, or ellipsized.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
void
|
|
gtk_label_set_angle (GtkLabel *label,
|
|
gdouble angle)
|
|
{
|
|
gdouble *label_angle;
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
label_angle = (gdouble *)g_object_get_qdata (G_OBJECT (label), quark_angle);
|
|
|
|
if (!label_angle)
|
|
{
|
|
label_angle = g_slice_new (gdouble);
|
|
*label_angle = 0.0;
|
|
g_object_set_qdata_full (G_OBJECT (label), quark_angle,
|
|
label_angle, free_angle);
|
|
}
|
|
|
|
/* Canonicalize to [0,360]. We don't canonicalize 360 to 0, because
|
|
* double property ranges are inclusive, and changing 360 to 0 would
|
|
* make a property editor behave strangely.
|
|
*/
|
|
if (angle < 0 || angle > 360.0)
|
|
angle = angle - 360. * floor (angle / 360.);
|
|
|
|
if (*label_angle != angle)
|
|
{
|
|
*label_angle = angle;
|
|
|
|
gtk_label_clear_layout (label);
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
|
|
g_object_notify (G_OBJECT (label), "angle");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_angle:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Gets the angle of rotation for the label. See
|
|
* gtk_label_set_angle().
|
|
*
|
|
* Return value: the angle of rotation for the label
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
gdouble
|
|
gtk_label_get_angle (GtkLabel *label)
|
|
{
|
|
gdouble *angle;
|
|
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), 0.0);
|
|
|
|
angle = (gdouble *)g_object_get_qdata (G_OBJECT (label), quark_angle);
|
|
|
|
if (angle)
|
|
return *angle;
|
|
else
|
|
return 0.0;
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_selection_text (GtkLabel *label,
|
|
GtkSelectionData *selection_data)
|
|
{
|
|
if ((label->select_info->selection_anchor !=
|
|
label->select_info->selection_end) &&
|
|
label->text)
|
|
{
|
|
gint start, end;
|
|
gint len;
|
|
|
|
start = MIN (label->select_info->selection_anchor,
|
|
label->select_info->selection_end);
|
|
end = MAX (label->select_info->selection_anchor,
|
|
label->select_info->selection_end);
|
|
|
|
len = strlen (label->text);
|
|
|
|
if (end > len)
|
|
end = len;
|
|
|
|
if (start > len)
|
|
start = len;
|
|
|
|
gtk_selection_data_set_text (selection_data,
|
|
label->text + start,
|
|
end - start);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_drag_data_get (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
GtkSelectionData *selection_data,
|
|
guint info,
|
|
guint time)
|
|
{
|
|
gtk_label_set_selection_text (GTK_LABEL (widget), selection_data);
|
|
}
|
|
|
|
static void
|
|
get_text_callback (GtkClipboard *clipboard,
|
|
GtkSelectionData *selection_data,
|
|
guint info,
|
|
gpointer user_data_or_owner)
|
|
{
|
|
gtk_label_set_selection_text (GTK_LABEL (user_data_or_owner), selection_data);
|
|
}
|
|
|
|
static void
|
|
clear_text_callback (GtkClipboard *clipboard,
|
|
gpointer user_data_or_owner)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (user_data_or_owner);
|
|
|
|
if (label->select_info)
|
|
{
|
|
label->select_info->selection_anchor = label->select_info->selection_end;
|
|
|
|
gtk_widget_queue_draw (GTK_WIDGET (label));
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_select_region_index (GtkLabel *label,
|
|
gint anchor_index,
|
|
gint end_index)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
if (label->select_info && label->select_info->selectable)
|
|
{
|
|
GtkClipboard *clipboard;
|
|
|
|
if (label->select_info->selection_anchor == anchor_index &&
|
|
label->select_info->selection_end == end_index)
|
|
return;
|
|
|
|
label->select_info->selection_anchor = anchor_index;
|
|
label->select_info->selection_end = end_index;
|
|
|
|
clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label),
|
|
GDK_SELECTION_PRIMARY);
|
|
|
|
if (anchor_index != end_index)
|
|
{
|
|
GtkTargetList *list;
|
|
GtkTargetEntry *targets;
|
|
gint n_targets;
|
|
|
|
list = gtk_target_list_new (NULL, 0);
|
|
gtk_target_list_add_text_targets (list, 0);
|
|
targets = gtk_target_table_new_from_list (list, &n_targets);
|
|
|
|
gtk_clipboard_set_with_owner (clipboard,
|
|
targets, n_targets,
|
|
get_text_callback,
|
|
clear_text_callback,
|
|
G_OBJECT (label));
|
|
|
|
gtk_target_table_free (targets, n_targets);
|
|
gtk_target_list_unref (list);
|
|
}
|
|
else
|
|
{
|
|
if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (label))
|
|
gtk_clipboard_clear (clipboard);
|
|
}
|
|
|
|
gtk_widget_queue_draw (GTK_WIDGET (label));
|
|
|
|
g_object_freeze_notify (G_OBJECT (label));
|
|
g_object_notify (G_OBJECT (label), "cursor-position");
|
|
g_object_notify (G_OBJECT (label), "selection-bound");
|
|
g_object_thaw_notify (G_OBJECT (label));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_select_region:
|
|
* @label: a #GtkLabel
|
|
* @start_offset: start offset (in characters not bytes)
|
|
* @end_offset: end offset (in characters not bytes)
|
|
*
|
|
* Selects a range of characters in the label, if the label is selectable.
|
|
* See gtk_label_set_selectable(). If the label is not selectable,
|
|
* this function has no effect. If @start_offset or
|
|
* @end_offset are -1, then the end of the label will be substituted.
|
|
**/
|
|
void
|
|
gtk_label_select_region (GtkLabel *label,
|
|
gint start_offset,
|
|
gint end_offset)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
if (label->text && label->select_info)
|
|
{
|
|
if (start_offset < 0)
|
|
start_offset = g_utf8_strlen (label->text, -1);
|
|
|
|
if (end_offset < 0)
|
|
end_offset = g_utf8_strlen (label->text, -1);
|
|
|
|
gtk_label_select_region_index (label,
|
|
g_utf8_offset_to_pointer (label->text, start_offset) - label->text,
|
|
g_utf8_offset_to_pointer (label->text, end_offset) - label->text);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_selection_bounds:
|
|
* @label: a #GtkLabel
|
|
* @start: return location for start of selection, as a character offset
|
|
* @end: return location for end of selection, as a character offset
|
|
*
|
|
* Gets the selected range of characters in the label, returning %TRUE
|
|
* if there's a selection.
|
|
*
|
|
* Return value: %TRUE if selection is non-empty
|
|
**/
|
|
gboolean
|
|
gtk_label_get_selection_bounds (GtkLabel *label,
|
|
gint *start,
|
|
gint *end)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
|
|
|
|
if (label->select_info == NULL)
|
|
{
|
|
/* not a selectable label */
|
|
if (start)
|
|
*start = 0;
|
|
if (end)
|
|
*end = 0;
|
|
|
|
return FALSE;
|
|
}
|
|
else
|
|
{
|
|
gint start_index, end_index;
|
|
gint start_offset, end_offset;
|
|
gint len;
|
|
|
|
start_index = MIN (label->select_info->selection_anchor,
|
|
label->select_info->selection_end);
|
|
end_index = MAX (label->select_info->selection_anchor,
|
|
label->select_info->selection_end);
|
|
|
|
len = strlen (label->text);
|
|
|
|
if (end_index > len)
|
|
end_index = len;
|
|
|
|
if (start_index > len)
|
|
start_index = len;
|
|
|
|
start_offset = g_utf8_strlen (label->text, start_index);
|
|
end_offset = g_utf8_strlen (label->text, end_index);
|
|
|
|
if (start_offset > end_offset)
|
|
{
|
|
gint tmp = start_offset;
|
|
start_offset = end_offset;
|
|
end_offset = tmp;
|
|
}
|
|
|
|
if (start)
|
|
*start = start_offset;
|
|
|
|
if (end)
|
|
*end = end_offset;
|
|
|
|
return start_offset != end_offset;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* gtk_label_get_layout:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Gets the #PangoLayout used to display the label.
|
|
* The layout is useful to e.g. convert text positions to
|
|
* pixel positions, in combination with gtk_label_get_layout_offsets().
|
|
* The returned layout is owned by the label so need not be
|
|
* freed by the caller.
|
|
*
|
|
* Return value: (transfer none): the #PangoLayout for this label
|
|
**/
|
|
PangoLayout*
|
|
gtk_label_get_layout (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
return label->layout;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_layout_offsets:
|
|
* @label: a #GtkLabel
|
|
* @x: (allow-none): location to store X offset of layout, or %NULL
|
|
* @y: (allow-none): location to store Y offset of layout, or %NULL
|
|
*
|
|
* Obtains the coordinates where the label will draw the #PangoLayout
|
|
* representing the text in the label; useful to convert mouse events
|
|
* into coordinates inside the #PangoLayout, e.g. to take some action
|
|
* if some part of the label is clicked. Of course you will need to
|
|
* create a #GtkEventBox to receive the events, and pack the label
|
|
* inside it, since labels are a #GTK_NO_WINDOW widget. Remember
|
|
* when using the #PangoLayout functions you need to convert to
|
|
* and from pixels using PANGO_PIXELS() or #PANGO_SCALE.
|
|
**/
|
|
void
|
|
gtk_label_get_layout_offsets (GtkLabel *label,
|
|
gint *x,
|
|
gint *y)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
get_layout_location (label, x, y);
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_use_markup:
|
|
* @label: a #GtkLabel
|
|
* @setting: %TRUE if the label's text should be parsed for markup.
|
|
*
|
|
* Sets whether the text of the label contains markup in <link
|
|
* linkend="PangoMarkupFormat">Pango's text markup
|
|
* language</link>. See gtk_label_set_markup().
|
|
**/
|
|
void
|
|
gtk_label_set_use_markup (GtkLabel *label,
|
|
gboolean setting)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
gtk_label_set_use_markup_internal (label, setting);
|
|
gtk_label_recalculate (label);
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_use_markup:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Returns whether the label's text is interpreted as marked up with
|
|
* the <link linkend="PangoMarkupFormat">Pango text markup
|
|
* language</link>. See gtk_label_set_use_markup ().
|
|
*
|
|
* Return value: %TRUE if the label's text will be parsed for markup.
|
|
**/
|
|
gboolean
|
|
gtk_label_get_use_markup (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
|
|
|
|
return label->use_markup;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_use_underline:
|
|
* @label: a #GtkLabel
|
|
* @setting: %TRUE if underlines in the text indicate mnemonics
|
|
*
|
|
* If true, an underline in the text indicates the next character should be
|
|
* used for the mnemonic accelerator key.
|
|
*/
|
|
void
|
|
gtk_label_set_use_underline (GtkLabel *label,
|
|
gboolean setting)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
gtk_label_set_use_underline_internal (label, setting);
|
|
gtk_label_recalculate (label);
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_use_underline:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Returns whether an embedded underline in the label indicates a
|
|
* mnemonic. See gtk_label_set_use_underline().
|
|
*
|
|
* Return value: %TRUE whether an embedded underline in the label indicates
|
|
* the mnemonic accelerator keys.
|
|
**/
|
|
gboolean
|
|
gtk_label_get_use_underline (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
|
|
|
|
return label->use_underline;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_single_line_mode:
|
|
* @label: a #GtkLabel
|
|
* @single_line_mode: %TRUE if the label should be in single line mode
|
|
*
|
|
* Sets whether the label is in single line mode.
|
|
*
|
|
* Since: 2.6
|
|
*/
|
|
void
|
|
gtk_label_set_single_line_mode (GtkLabel *label,
|
|
gboolean single_line_mode)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
single_line_mode = single_line_mode != FALSE;
|
|
|
|
if (label->single_line_mode != single_line_mode)
|
|
{
|
|
label->single_line_mode = single_line_mode;
|
|
|
|
gtk_label_clear_layout (label);
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
|
|
g_object_notify (G_OBJECT (label), "single-line-mode");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_single_line_mode:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Returns whether the label is in single line mode.
|
|
*
|
|
* Return value: %TRUE when the label is in single line mode.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
gboolean
|
|
gtk_label_get_single_line_mode (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
|
|
|
|
return label->single_line_mode;
|
|
}
|
|
|
|
/* Compute the X position for an offset that corresponds to the "more important
|
|
* cursor position for that offset. We use this when trying to guess to which
|
|
* end of the selection we should go to when the user hits the left or
|
|
* right arrow key.
|
|
*/
|
|
static void
|
|
get_better_cursor (GtkLabel *label,
|
|
gint index,
|
|
gint *x,
|
|
gint *y)
|
|
{
|
|
GdkKeymap *keymap = gdk_keymap_get_for_display (gtk_widget_get_display (GTK_WIDGET (label)));
|
|
PangoDirection keymap_direction = gdk_keymap_get_direction (keymap);
|
|
PangoDirection cursor_direction = get_cursor_direction (label);
|
|
gboolean split_cursor;
|
|
PangoRectangle strong_pos, weak_pos;
|
|
|
|
g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
|
|
"gtk-split-cursor", &split_cursor,
|
|
NULL);
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
pango_layout_get_cursor_pos (label->layout, index,
|
|
&strong_pos, &weak_pos);
|
|
|
|
if (split_cursor)
|
|
{
|
|
*x = strong_pos.x / PANGO_SCALE;
|
|
*y = strong_pos.y / PANGO_SCALE;
|
|
}
|
|
else
|
|
{
|
|
if (keymap_direction == cursor_direction)
|
|
{
|
|
*x = strong_pos.x / PANGO_SCALE;
|
|
*y = strong_pos.y / PANGO_SCALE;
|
|
}
|
|
else
|
|
{
|
|
*x = weak_pos.x / PANGO_SCALE;
|
|
*y = weak_pos.y / PANGO_SCALE;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static gint
|
|
gtk_label_move_logically (GtkLabel *label,
|
|
gint start,
|
|
gint count)
|
|
{
|
|
gint offset = g_utf8_pointer_to_offset (label->text,
|
|
label->text + start);
|
|
|
|
if (label->text)
|
|
{
|
|
PangoLogAttr *log_attrs;
|
|
gint n_attrs;
|
|
gint length;
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
length = g_utf8_strlen (label->text, -1);
|
|
|
|
pango_layout_get_log_attrs (label->layout, &log_attrs, &n_attrs);
|
|
|
|
while (count > 0 && offset < length)
|
|
{
|
|
do
|
|
offset++;
|
|
while (offset < length && !log_attrs[offset].is_cursor_position);
|
|
|
|
count--;
|
|
}
|
|
while (count < 0 && offset > 0)
|
|
{
|
|
do
|
|
offset--;
|
|
while (offset > 0 && !log_attrs[offset].is_cursor_position);
|
|
|
|
count++;
|
|
}
|
|
|
|
g_free (log_attrs);
|
|
}
|
|
|
|
return g_utf8_offset_to_pointer (label->text, offset) - label->text;
|
|
}
|
|
|
|
static gint
|
|
gtk_label_move_visually (GtkLabel *label,
|
|
gint start,
|
|
gint count)
|
|
{
|
|
gint index;
|
|
|
|
index = start;
|
|
|
|
while (count != 0)
|
|
{
|
|
int new_index, new_trailing;
|
|
gboolean split_cursor;
|
|
gboolean strong;
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
|
|
"gtk-split-cursor", &split_cursor,
|
|
NULL);
|
|
|
|
if (split_cursor)
|
|
strong = TRUE;
|
|
else
|
|
{
|
|
GdkKeymap *keymap = gdk_keymap_get_for_display (gtk_widget_get_display (GTK_WIDGET (label)));
|
|
PangoDirection keymap_direction = gdk_keymap_get_direction (keymap);
|
|
|
|
strong = keymap_direction == get_cursor_direction (label);
|
|
}
|
|
|
|
if (count > 0)
|
|
{
|
|
pango_layout_move_cursor_visually (label->layout, strong, index, 0, 1, &new_index, &new_trailing);
|
|
count--;
|
|
}
|
|
else
|
|
{
|
|
pango_layout_move_cursor_visually (label->layout, strong, index, 0, -1, &new_index, &new_trailing);
|
|
count++;
|
|
}
|
|
|
|
if (new_index < 0 || new_index == G_MAXINT)
|
|
break;
|
|
|
|
index = new_index;
|
|
|
|
while (new_trailing--)
|
|
index = g_utf8_next_char (label->text + new_index) - label->text;
|
|
}
|
|
|
|
return index;
|
|
}
|
|
|
|
static gint
|
|
gtk_label_move_forward_word (GtkLabel *label,
|
|
gint start)
|
|
{
|
|
gint new_pos = g_utf8_pointer_to_offset (label->text,
|
|
label->text + start);
|
|
gint length;
|
|
|
|
length = g_utf8_strlen (label->text, -1);
|
|
if (new_pos < length)
|
|
{
|
|
PangoLogAttr *log_attrs;
|
|
gint n_attrs;
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
pango_layout_get_log_attrs (label->layout, &log_attrs, &n_attrs);
|
|
|
|
/* Find the next word end */
|
|
new_pos++;
|
|
while (new_pos < n_attrs && !log_attrs[new_pos].is_word_end)
|
|
new_pos++;
|
|
|
|
g_free (log_attrs);
|
|
}
|
|
|
|
return g_utf8_offset_to_pointer (label->text, new_pos) - label->text;
|
|
}
|
|
|
|
|
|
static gint
|
|
gtk_label_move_backward_word (GtkLabel *label,
|
|
gint start)
|
|
{
|
|
gint new_pos = g_utf8_pointer_to_offset (label->text,
|
|
label->text + start);
|
|
|
|
if (new_pos > 0)
|
|
{
|
|
PangoLogAttr *log_attrs;
|
|
gint n_attrs;
|
|
|
|
gtk_label_ensure_layout (label, FALSE);
|
|
|
|
pango_layout_get_log_attrs (label->layout, &log_attrs, &n_attrs);
|
|
|
|
new_pos -= 1;
|
|
|
|
/* Find the previous word beginning */
|
|
while (new_pos > 0 && !log_attrs[new_pos].is_word_start)
|
|
new_pos--;
|
|
|
|
g_free (log_attrs);
|
|
}
|
|
|
|
return g_utf8_offset_to_pointer (label->text, new_pos) - label->text;
|
|
}
|
|
|
|
static void
|
|
gtk_label_move_cursor (GtkLabel *label,
|
|
GtkMovementStep step,
|
|
gint count,
|
|
gboolean extend_selection)
|
|
{
|
|
gint old_pos;
|
|
gint new_pos;
|
|
|
|
if (label->select_info == NULL)
|
|
return;
|
|
|
|
old_pos = new_pos = label->select_info->selection_end;
|
|
|
|
if (label->select_info->selection_end != label->select_info->selection_anchor &&
|
|
!extend_selection)
|
|
{
|
|
/* If we have a current selection and aren't extending it, move to the
|
|
* start/or end of the selection as appropriate
|
|
*/
|
|
switch (step)
|
|
{
|
|
case GTK_MOVEMENT_VISUAL_POSITIONS:
|
|
{
|
|
gint end_x, end_y;
|
|
gint anchor_x, anchor_y;
|
|
gboolean end_is_left;
|
|
|
|
get_better_cursor (label, label->select_info->selection_end, &end_x, &end_y);
|
|
get_better_cursor (label, label->select_info->selection_anchor, &anchor_x, &anchor_y);
|
|
|
|
end_is_left = (end_y < anchor_y) || (end_y == anchor_y && end_x < anchor_x);
|
|
|
|
if (count < 0)
|
|
new_pos = end_is_left ? label->select_info->selection_end : label->select_info->selection_anchor;
|
|
else
|
|
new_pos = !end_is_left ? label->select_info->selection_end : label->select_info->selection_anchor;
|
|
break;
|
|
}
|
|
case GTK_MOVEMENT_LOGICAL_POSITIONS:
|
|
case GTK_MOVEMENT_WORDS:
|
|
if (count < 0)
|
|
new_pos = MIN (label->select_info->selection_end, label->select_info->selection_anchor);
|
|
else
|
|
new_pos = MAX (label->select_info->selection_end, label->select_info->selection_anchor);
|
|
break;
|
|
case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
|
|
case GTK_MOVEMENT_PARAGRAPH_ENDS:
|
|
case GTK_MOVEMENT_BUFFER_ENDS:
|
|
/* FIXME: Can do better here */
|
|
new_pos = count < 0 ? 0 : strlen (label->text);
|
|
break;
|
|
case GTK_MOVEMENT_DISPLAY_LINES:
|
|
case GTK_MOVEMENT_PARAGRAPHS:
|
|
case GTK_MOVEMENT_PAGES:
|
|
case GTK_MOVEMENT_HORIZONTAL_PAGES:
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch (step)
|
|
{
|
|
case GTK_MOVEMENT_LOGICAL_POSITIONS:
|
|
new_pos = gtk_label_move_logically (label, new_pos, count);
|
|
break;
|
|
case GTK_MOVEMENT_VISUAL_POSITIONS:
|
|
new_pos = gtk_label_move_visually (label, new_pos, count);
|
|
if (new_pos == old_pos)
|
|
{
|
|
if (!extend_selection)
|
|
{
|
|
if (!gtk_widget_keynav_failed (GTK_WIDGET (label),
|
|
count > 0 ?
|
|
GTK_DIR_RIGHT : GTK_DIR_LEFT))
|
|
{
|
|
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (label));
|
|
|
|
if (toplevel)
|
|
gtk_widget_child_focus (toplevel,
|
|
count > 0 ?
|
|
GTK_DIR_RIGHT : GTK_DIR_LEFT);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
gtk_widget_error_bell (GTK_WIDGET (label));
|
|
}
|
|
}
|
|
break;
|
|
case GTK_MOVEMENT_WORDS:
|
|
while (count > 0)
|
|
{
|
|
new_pos = gtk_label_move_forward_word (label, new_pos);
|
|
count--;
|
|
}
|
|
while (count < 0)
|
|
{
|
|
new_pos = gtk_label_move_backward_word (label, new_pos);
|
|
count++;
|
|
}
|
|
if (new_pos == old_pos)
|
|
gtk_widget_error_bell (GTK_WIDGET (label));
|
|
break;
|
|
case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
|
|
case GTK_MOVEMENT_PARAGRAPH_ENDS:
|
|
case GTK_MOVEMENT_BUFFER_ENDS:
|
|
/* FIXME: Can do better here */
|
|
new_pos = count < 0 ? 0 : strlen (label->text);
|
|
if (new_pos == old_pos)
|
|
gtk_widget_error_bell (GTK_WIDGET (label));
|
|
break;
|
|
case GTK_MOVEMENT_DISPLAY_LINES:
|
|
case GTK_MOVEMENT_PARAGRAPHS:
|
|
case GTK_MOVEMENT_PAGES:
|
|
case GTK_MOVEMENT_HORIZONTAL_PAGES:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (extend_selection)
|
|
gtk_label_select_region_index (label,
|
|
label->select_info->selection_anchor,
|
|
new_pos);
|
|
else
|
|
gtk_label_select_region_index (label, new_pos, new_pos);
|
|
}
|
|
|
|
static void
|
|
gtk_label_copy_clipboard (GtkLabel *label)
|
|
{
|
|
if (label->text && label->select_info)
|
|
{
|
|
gint start, end;
|
|
gint len;
|
|
GtkClipboard *clipboard;
|
|
|
|
start = MIN (label->select_info->selection_anchor,
|
|
label->select_info->selection_end);
|
|
end = MAX (label->select_info->selection_anchor,
|
|
label->select_info->selection_end);
|
|
|
|
len = strlen (label->text);
|
|
|
|
if (end > len)
|
|
end = len;
|
|
|
|
if (start > len)
|
|
start = len;
|
|
|
|
clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label), GDK_SELECTION_CLIPBOARD);
|
|
|
|
if (start != end)
|
|
gtk_clipboard_set_text (clipboard, label->text + start, end - start);
|
|
else
|
|
{
|
|
GtkLabelLink *link;
|
|
|
|
link = gtk_label_get_focus_link (label);
|
|
if (link)
|
|
gtk_clipboard_set_text (clipboard, link->uri, -1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_select_all (GtkLabel *label)
|
|
{
|
|
gtk_label_select_region_index (label, 0, strlen (label->text));
|
|
}
|
|
|
|
/* Quick hack of a popup menu
|
|
*/
|
|
static void
|
|
activate_cb (GtkWidget *menuitem,
|
|
GtkLabel *label)
|
|
{
|
|
const gchar *signal = g_object_get_data (G_OBJECT (menuitem), "gtk-signal");
|
|
g_signal_emit_by_name (label, signal);
|
|
}
|
|
|
|
static void
|
|
append_action_signal (GtkLabel *label,
|
|
GtkWidget *menu,
|
|
const gchar *stock_id,
|
|
const gchar *signal,
|
|
gboolean sensitive)
|
|
{
|
|
GtkWidget *menuitem = gtk_image_menu_item_new_from_stock (stock_id, NULL);
|
|
|
|
g_object_set_data (G_OBJECT (menuitem), I_("gtk-signal"), (char *)signal);
|
|
g_signal_connect (menuitem, "activate",
|
|
G_CALLBACK (activate_cb), label);
|
|
|
|
gtk_widget_set_sensitive (menuitem, sensitive);
|
|
|
|
gtk_widget_show (menuitem);
|
|
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
|
|
}
|
|
|
|
static void
|
|
popup_menu_detach (GtkWidget *attach_widget,
|
|
GtkMenu *menu)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (attach_widget);
|
|
|
|
if (label->select_info)
|
|
label->select_info->popup_menu = NULL;
|
|
}
|
|
|
|
static void
|
|
popup_position_func (GtkMenu *menu,
|
|
gint *x,
|
|
gint *y,
|
|
gboolean *push_in,
|
|
gpointer user_data)
|
|
{
|
|
GtkLabel *label;
|
|
GtkWidget *widget;
|
|
GtkRequisition req;
|
|
GdkScreen *screen;
|
|
|
|
label = GTK_LABEL (user_data);
|
|
widget = GTK_WIDGET (label);
|
|
|
|
g_return_if_fail (gtk_widget_get_realized (widget));
|
|
|
|
screen = gtk_widget_get_screen (widget);
|
|
gdk_window_get_origin (widget->window, x, y);
|
|
|
|
*x += widget->allocation.x;
|
|
*y += widget->allocation.y;
|
|
|
|
gtk_widget_size_request (GTK_WIDGET (menu), &req);
|
|
|
|
*x += widget->allocation.width / 2;
|
|
*y += widget->allocation.height;
|
|
|
|
*x = CLAMP (*x, 0, MAX (0, gdk_screen_get_width (screen) - req.width));
|
|
*y = CLAMP (*y, 0, MAX (0, gdk_screen_get_height (screen) - req.height));
|
|
}
|
|
|
|
static void
|
|
open_link_activate_cb (GtkMenuItem *menu_item,
|
|
GtkLabel *label)
|
|
{
|
|
GtkLabelLink *link;
|
|
|
|
link = gtk_label_get_current_link (label);
|
|
|
|
if (link)
|
|
emit_activate_link (label, link);
|
|
}
|
|
|
|
static void
|
|
copy_link_activate_cb (GtkMenuItem *menu_item,
|
|
GtkLabel *label)
|
|
{
|
|
GtkClipboard *clipboard;
|
|
const gchar *uri;
|
|
|
|
uri = gtk_label_get_current_uri (label);
|
|
if (uri)
|
|
{
|
|
clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label), GDK_SELECTION_CLIPBOARD);
|
|
gtk_clipboard_set_text (clipboard, uri, -1);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gtk_label_popup_menu (GtkWidget *widget)
|
|
{
|
|
gtk_label_do_popup (GTK_LABEL (widget), NULL);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gtk_label_do_popup (GtkLabel *label,
|
|
GdkEventButton *event)
|
|
{
|
|
GtkWidget *menuitem;
|
|
GtkWidget *menu;
|
|
GtkWidget *image;
|
|
gboolean have_selection;
|
|
GtkLabelLink *link;
|
|
|
|
if (!label->select_info)
|
|
return;
|
|
|
|
if (label->select_info->popup_menu)
|
|
gtk_widget_destroy (label->select_info->popup_menu);
|
|
|
|
label->select_info->popup_menu = menu = gtk_menu_new ();
|
|
|
|
gtk_menu_attach_to_widget (GTK_MENU (menu), GTK_WIDGET (label), popup_menu_detach);
|
|
|
|
have_selection =
|
|
label->select_info->selection_anchor != label->select_info->selection_end;
|
|
|
|
if (event)
|
|
{
|
|
if (label->select_info->link_clicked)
|
|
link = label->select_info->active_link;
|
|
else
|
|
link = NULL;
|
|
}
|
|
else
|
|
link = gtk_label_get_focus_link (label);
|
|
|
|
if (!have_selection && link)
|
|
{
|
|
/* Open Link */
|
|
menuitem = gtk_image_menu_item_new_with_mnemonic (_("_Open Link"));
|
|
gtk_widget_show (menuitem);
|
|
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
|
|
|
|
g_signal_connect (G_OBJECT (menuitem), "activate",
|
|
G_CALLBACK (open_link_activate_cb), label);
|
|
|
|
image = gtk_image_new_from_stock (GTK_STOCK_JUMP_TO, GTK_ICON_SIZE_MENU);
|
|
gtk_widget_show (image);
|
|
gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menuitem), image);
|
|
|
|
/* Copy Link Address */
|
|
menuitem = gtk_image_menu_item_new_with_mnemonic (_("Copy _Link Address"));
|
|
gtk_widget_show (menuitem);
|
|
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
|
|
|
|
g_signal_connect (G_OBJECT (menuitem), "activate",
|
|
G_CALLBACK (copy_link_activate_cb), label);
|
|
|
|
image = gtk_image_new_from_stock (GTK_STOCK_COPY, GTK_ICON_SIZE_MENU);
|
|
gtk_widget_show (image);
|
|
gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menuitem), image);
|
|
}
|
|
else
|
|
{
|
|
append_action_signal (label, menu, GTK_STOCK_CUT, "cut-clipboard", FALSE);
|
|
append_action_signal (label, menu, GTK_STOCK_COPY, "copy-clipboard", have_selection);
|
|
append_action_signal (label, menu, GTK_STOCK_PASTE, "paste-clipboard", FALSE);
|
|
|
|
menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_DELETE, NULL);
|
|
gtk_widget_set_sensitive (menuitem, FALSE);
|
|
gtk_widget_show (menuitem);
|
|
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
|
|
|
|
menuitem = gtk_separator_menu_item_new ();
|
|
gtk_widget_show (menuitem);
|
|
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
|
|
|
|
menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_SELECT_ALL, NULL);
|
|
g_signal_connect_swapped (menuitem, "activate",
|
|
G_CALLBACK (gtk_label_select_all), label);
|
|
gtk_widget_show (menuitem);
|
|
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
|
|
}
|
|
|
|
g_signal_emit (label, signals[POPULATE_POPUP], 0, menu);
|
|
|
|
if (event)
|
|
gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
|
|
NULL, NULL,
|
|
event->button, event->time);
|
|
else
|
|
{
|
|
gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
|
|
popup_position_func, label,
|
|
0, gtk_get_current_event_time ());
|
|
gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_clear_links (GtkLabel *label)
|
|
{
|
|
if (!label->select_info)
|
|
return;
|
|
|
|
g_list_foreach (label->select_info->links, (GFunc)link_free, NULL);
|
|
g_list_free (label->select_info->links);
|
|
label->select_info->links = NULL;
|
|
label->select_info->active_link = NULL;
|
|
}
|
|
|
|
static void
|
|
gtk_label_rescan_links (GtkLabel *label)
|
|
{
|
|
PangoLayout *layout = label->layout;
|
|
PangoAttrList *attlist;
|
|
PangoAttrIterator *iter;
|
|
GList *links;
|
|
|
|
if (!label->select_info || !label->select_info->links)
|
|
return;
|
|
|
|
attlist = pango_layout_get_attributes (layout);
|
|
|
|
if (attlist == NULL)
|
|
return;
|
|
|
|
iter = pango_attr_list_get_iterator (attlist);
|
|
|
|
links = label->select_info->links;
|
|
|
|
do
|
|
{
|
|
PangoAttribute *underline;
|
|
PangoAttribute *color;
|
|
|
|
underline = pango_attr_iterator_get (iter, PANGO_ATTR_UNDERLINE);
|
|
color = pango_attr_iterator_get (iter, PANGO_ATTR_FOREGROUND);
|
|
|
|
if (underline != NULL && color != NULL)
|
|
{
|
|
gint start, end;
|
|
PangoRectangle start_pos;
|
|
PangoRectangle end_pos;
|
|
GtkLabelLink *link;
|
|
|
|
pango_attr_iterator_range (iter, &start, &end);
|
|
pango_layout_index_to_pos (layout, start, &start_pos);
|
|
pango_layout_index_to_pos (layout, end, &end_pos);
|
|
|
|
if (links == NULL)
|
|
{
|
|
g_warning ("Ran out of links");
|
|
break;
|
|
}
|
|
link = links->data;
|
|
links = links->next;
|
|
link->start = start;
|
|
link->end = end;
|
|
}
|
|
} while (pango_attr_iterator_next (iter));
|
|
|
|
pango_attr_iterator_destroy (iter);
|
|
}
|
|
|
|
static gboolean
|
|
gtk_label_activate_link (GtkLabel *label,
|
|
const gchar *uri)
|
|
{
|
|
GtkWidget *widget = GTK_WIDGET (label);
|
|
GError *error = NULL;
|
|
|
|
if (!gtk_show_uri (gtk_widget_get_screen (widget),
|
|
uri, gtk_get_current_event_time (), &error))
|
|
{
|
|
g_warning ("Unable to show '%s': %s", uri, error->message);
|
|
g_error_free (error);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
emit_activate_link (GtkLabel *label,
|
|
GtkLabelLink *link)
|
|
{
|
|
gboolean handled;
|
|
|
|
g_signal_emit (label, signals[ACTIVATE_LINK], 0, link->uri, &handled);
|
|
if (handled && label->track_links && !link->visited)
|
|
{
|
|
link->visited = TRUE;
|
|
/* FIXME: shouldn't have to redo everything here */
|
|
gtk_label_recalculate (label);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_activate_current_link (GtkLabel *label)
|
|
{
|
|
GtkLabelLink *link;
|
|
GtkWidget *widget = GTK_WIDGET (label);
|
|
|
|
link = gtk_label_get_focus_link (label);
|
|
|
|
if (link)
|
|
{
|
|
emit_activate_link (label, link);
|
|
}
|
|
else
|
|
{
|
|
GtkWidget *toplevel;
|
|
GtkWindow *window;
|
|
|
|
toplevel = gtk_widget_get_toplevel (widget);
|
|
if (GTK_IS_WINDOW (toplevel))
|
|
{
|
|
window = GTK_WINDOW (toplevel);
|
|
|
|
if (window &&
|
|
window->default_widget != widget &&
|
|
!(widget == window->focus_widget &&
|
|
(!window->default_widget || !gtk_widget_is_sensitive (window->default_widget))))
|
|
gtk_window_activate_default (window);
|
|
}
|
|
}
|
|
}
|
|
|
|
static GtkLabelLink *
|
|
gtk_label_get_current_link (GtkLabel *label)
|
|
{
|
|
GtkLabelLink *link;
|
|
|
|
if (!label->select_info)
|
|
return NULL;
|
|
|
|
if (label->select_info->link_clicked)
|
|
link = label->select_info->active_link;
|
|
else
|
|
link = gtk_label_get_focus_link (label);
|
|
|
|
return link;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_current_uri:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Returns the URI for the currently active link in the label.
|
|
* The active link is the one under the mouse pointer or, in a
|
|
* selectable label, the link in which the text cursor is currently
|
|
* positioned.
|
|
*
|
|
* This function is intended for use in a #GtkLabel::activate-link handler
|
|
* or for use in a #GtkWidget::query-tooltip handler.
|
|
*
|
|
* Returns: the currently active URI. The string is owned by GTK+ and must
|
|
* not be freed or modified.
|
|
*
|
|
* Since: 2.18
|
|
*/
|
|
G_CONST_RETURN gchar *
|
|
gtk_label_get_current_uri (GtkLabel *label)
|
|
{
|
|
GtkLabelLink *link;
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
|
|
|
|
link = gtk_label_get_current_link (label);
|
|
|
|
if (link)
|
|
return link->uri;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_set_track_visited_links:
|
|
* @label: a #GtkLabel
|
|
* @track_links: %TRUE to track visited links
|
|
*
|
|
* Sets whether the label should keep track of clicked
|
|
* links (and use a different color for them).
|
|
*
|
|
* Since: 2.18
|
|
*/
|
|
void
|
|
gtk_label_set_track_visited_links (GtkLabel *label,
|
|
gboolean track_links)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
track_links = track_links != FALSE;
|
|
|
|
if (label->track_links != track_links)
|
|
{
|
|
label->track_links = track_links;
|
|
|
|
/* FIXME: shouldn't have to redo everything here */
|
|
gtk_label_recalculate (label);
|
|
|
|
g_object_notify (G_OBJECT (label), "track-visited-links");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_track_visited_links:
|
|
* @label: a #GtkLabel
|
|
*
|
|
* Returns whether the label is currently keeping track
|
|
* of clicked links.
|
|
*
|
|
* Returns: %TRUE if clicked links are remembered
|
|
*
|
|
* Since: 2.18
|
|
*/
|
|
gboolean
|
|
gtk_label_get_track_visited_links (GtkLabel *label)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
|
|
|
|
return label->track_links;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_label_query_tooltip (GtkWidget *widget,
|
|
gint x,
|
|
gint y,
|
|
gboolean keyboard_tip,
|
|
GtkTooltip *tooltip)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
GtkLabelSelectionInfo *info = label->select_info;
|
|
gint index = -1;
|
|
GList *l;
|
|
|
|
if (info && info->links)
|
|
{
|
|
if (keyboard_tip)
|
|
{
|
|
if (info->selection_anchor == info->selection_end)
|
|
index = info->selection_anchor;
|
|
}
|
|
else
|
|
{
|
|
if (!get_layout_index (label, x, y, &index))
|
|
index = -1;
|
|
}
|
|
|
|
if (index != -1)
|
|
{
|
|
for (l = info->links; l != NULL; l = l->next)
|
|
{
|
|
GtkLabelLink *link = l->data;
|
|
if (index >= link->start && index <= link->end)
|
|
{
|
|
if (link->title)
|
|
{
|
|
gtk_tooltip_set_markup (tooltip, link->title);
|
|
return TRUE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return GTK_WIDGET_CLASS (gtk_label_parent_class)->query_tooltip (widget,
|
|
x, y,
|
|
keyboard_tip,
|
|
tooltip);
|
|
}
|