forked from AuroraMiddleware/gtk
d1d235adcb
Mon Sep 30 15:45:49 2002 Owen Taylor <otaylor@redhat.com>
* gtk/gtklabel.c (gtk_label_set_mnemonic_widget):
Make the reference to the mnemonic widget weak.
(#93334, Murray Cumming)
3239 lines
88 KiB
C
3239 lines
88 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 <math.h>
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#include <string.h>
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#include "gtklabel.h"
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#include "gtkmain.h"
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#include "gtkmarshalers.h"
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#include "gtksignal.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 <pango/pango.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 "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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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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};
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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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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_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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};
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static guint signals[LAST_SIGNAL] = { 0 };
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static void gtk_label_class_init (GtkLabelClass *klass);
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static void gtk_label_init (GtkLabel *label);
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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_request (GtkWidget *widget,
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GtkRequisition *requisition);
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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 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 gint gtk_label_button_press (GtkWidget *widget,
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GdkEventButton *event);
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static gint gtk_label_button_release (GtkWidget *widget,
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GdkEventButton *event);
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static gint gtk_label_motion (GtkWidget *widget,
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GdkEventMotion *event);
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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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static void set_markup (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_create_window (GtkLabel *label);
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static void gtk_label_destroy_window (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);
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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 gboolean gtk_label_focus (GtkWidget *widget,
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GtkDirectionType direction);
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/* For selectable lables: */
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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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static GtkMiscClass *parent_class = NULL;
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GtkType
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gtk_label_get_type (void)
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{
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static GtkType label_type = 0;
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if (!label_type)
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{
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static const GTypeInfo label_info =
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{
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sizeof (GtkLabelClass),
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NULL, /* base_init */
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NULL, /* base_finalize */
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(GClassInitFunc) gtk_label_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GtkLabel),
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32, /* n_preallocs */
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(GInstanceInitFunc) gtk_label_init,
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};
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label_type = g_type_register_static (GTK_TYPE_MISC, "GtkLabel", &label_info, 0);
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}
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return label_type;
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}
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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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GTK_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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GTK_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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parent_class = gtk_type_class (GTK_TYPE_MISC);
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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_request = gtk_label_size_request;
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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->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->hierarchy_changed = gtk_label_hierarchy_changed;
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widget_class->mnemonic_activate = gtk_label_mnemonic_activate;
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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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signals[MOVE_CURSOR] =
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gtk_signal_new ("move_cursor",
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GTK_RUN_LAST | GTK_RUN_ACTION,
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GTK_CLASS_TYPE (object_class),
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GTK_SIGNAL_OFFSET (GtkLabelClass, move_cursor),
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_gtk_marshal_VOID__ENUM_INT_BOOLEAN,
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GTK_TYPE_NONE, 3, GTK_TYPE_MOVEMENT_STEP, GTK_TYPE_INT, GTK_TYPE_BOOL);
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signals[COPY_CLIPBOARD] =
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gtk_signal_new ("copy_clipboard",
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GTK_RUN_LAST | GTK_RUN_ACTION,
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GTK_CLASS_TYPE (object_class),
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GTK_SIGNAL_OFFSET (GtkLabelClass, copy_clipboard),
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_gtk_marshal_VOID__VOID,
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GTK_TYPE_NONE, 0);
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signals[POPULATE_POPUP] =
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gtk_signal_new ("populate_popup",
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GTK_RUN_LAST,
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GTK_CLASS_TYPE (object_class),
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GTK_SIGNAL_OFFSET (GtkLabelClass, populate_popup),
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_gtk_marshal_VOID__OBJECT,
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GTK_TYPE_NONE, 1, GTK_TYPE_MENU);
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g_object_class_install_property (G_OBJECT_CLASS(object_class),
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PROP_LABEL,
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g_param_spec_string ("label",
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_("Label"),
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_("The text of the label"),
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NULL,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_ATTRIBUTES,
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g_param_spec_boxed ("attributes",
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_("Attributes"),
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_("A list of style attributes to apply to the text of the label"),
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PANGO_TYPE_ATTR_LIST,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_USE_MARKUP,
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g_param_spec_boolean ("use_markup",
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_("Use markup"),
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_("The text of the label includes XML markup. See pango_parse_markup()"),
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FALSE,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_USE_UNDERLINE,
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g_param_spec_boolean ("use_underline",
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_("Use underline"),
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_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"),
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FALSE,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_JUSTIFY,
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g_param_spec_enum ("justify",
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_("Justification"),
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_("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"),
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GTK_TYPE_JUSTIFICATION,
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GTK_JUSTIFY_LEFT,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_PATTERN,
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g_param_spec_string ("pattern",
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_("Pattern"),
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_("A string with _ characters in positions correspond to characters in the text to underline"),
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NULL,
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G_PARAM_WRITABLE));
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g_object_class_install_property (gobject_class,
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PROP_WRAP,
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g_param_spec_boolean ("wrap",
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_("Line wrap"),
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_("If set, wrap lines if the text becomes too wide"),
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FALSE,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_SELECTABLE,
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g_param_spec_boolean ("selectable",
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_("Selectable"),
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_("Whether the label text can be selected with the mouse"),
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FALSE,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_MNEMONIC_KEYVAL,
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g_param_spec_uint ("mnemonic_keyval",
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_("Mnemonic key"),
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_("The mnemonic accelerator key for this label"),
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0,
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G_MAXUINT,
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GDK_VoidSymbol,
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G_PARAM_READABLE));
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g_object_class_install_property (gobject_class,
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PROP_MNEMONIC_WIDGET,
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g_param_spec_object ("mnemonic_widget",
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_("Mnemonic widget"),
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_("The widget to be activated when the label's mnemonic "
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"key is pressed"),
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GTK_TYPE_WIDGET,
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G_PARAM_READWRITE));
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g_object_class_install_property (gobject_class,
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PROP_CURSOR_POSITION,
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g_param_spec_int ("cursor_position",
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_("Cursor Position"),
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_("The current position of the insertion cursor in chars"),
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0,
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G_MAXINT,
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0,
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G_PARAM_READABLE));
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g_object_class_install_property (gobject_class,
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PROP_SELECTION_BOUND,
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g_param_spec_int ("selection_bound",
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_("Selection Bound"),
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_("The position of the opposite end of the selection from the cursor in chars"),
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0,
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G_MAXINT,
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0,
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G_PARAM_READABLE));
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/*
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* Key bindings
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*/
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binding_set = gtk_binding_set_by_class (class);
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/* Moving the insertion point */
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add_move_binding (binding_set, GDK_Right, 0,
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GTK_MOVEMENT_VISUAL_POSITIONS, 1);
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add_move_binding (binding_set, GDK_Left, 0,
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GTK_MOVEMENT_VISUAL_POSITIONS, -1);
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add_move_binding (binding_set, GDK_KP_Right, 0,
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GTK_MOVEMENT_VISUAL_POSITIONS, 1);
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add_move_binding (binding_set, GDK_KP_Left, 0,
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GTK_MOVEMENT_VISUAL_POSITIONS, -1);
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add_move_binding (binding_set, GDK_f, GDK_CONTROL_MASK,
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GTK_MOVEMENT_LOGICAL_POSITIONS, 1);
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add_move_binding (binding_set, GDK_b, GDK_CONTROL_MASK,
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GTK_MOVEMENT_LOGICAL_POSITIONS, -1);
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add_move_binding (binding_set, GDK_Right, GDK_CONTROL_MASK,
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GTK_MOVEMENT_WORDS, 1);
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add_move_binding (binding_set, GDK_Left, GDK_CONTROL_MASK,
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GTK_MOVEMENT_WORDS, -1);
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add_move_binding (binding_set, GDK_KP_Right, GDK_CONTROL_MASK,
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GTK_MOVEMENT_WORDS, 1);
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add_move_binding (binding_set, GDK_KP_Left, GDK_CONTROL_MASK,
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GTK_MOVEMENT_WORDS, -1);
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add_move_binding (binding_set, GDK_a, GDK_CONTROL_MASK,
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GTK_MOVEMENT_PARAGRAPH_ENDS, -1);
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add_move_binding (binding_set, GDK_e, GDK_CONTROL_MASK,
|
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GTK_MOVEMENT_PARAGRAPH_ENDS, 1);
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add_move_binding (binding_set, GDK_f, GDK_MOD1_MASK,
|
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GTK_MOVEMENT_WORDS, 1);
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add_move_binding (binding_set, GDK_b, GDK_MOD1_MASK,
|
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GTK_MOVEMENT_WORDS, -1);
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add_move_binding (binding_set, GDK_Home, 0,
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GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
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add_move_binding (binding_set, GDK_End, 0,
|
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GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
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add_move_binding (binding_set, GDK_KP_Home, 0,
|
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GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
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add_move_binding (binding_set, GDK_KP_End, 0,
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GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
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add_move_binding (binding_set, GDK_Home, GDK_CONTROL_MASK,
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GTK_MOVEMENT_BUFFER_ENDS, -1);
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add_move_binding (binding_set, GDK_End, GDK_CONTROL_MASK,
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GTK_MOVEMENT_BUFFER_ENDS, 1);
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add_move_binding (binding_set, GDK_KP_Home, GDK_CONTROL_MASK,
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GTK_MOVEMENT_BUFFER_ENDS, -1);
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add_move_binding (binding_set, GDK_KP_End, GDK_CONTROL_MASK,
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GTK_MOVEMENT_BUFFER_ENDS, 1);
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/* copy */
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gtk_binding_entry_add_signal (binding_set, GDK_c, GDK_CONTROL_MASK,
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"copy_clipboard", 0);
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}
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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,
|
|
GParamSpec *pspec)
|
|
{
|
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GtkLabel *label;
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guint last_keyval;
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|
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label = GTK_LABEL (object);
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last_keyval = label->mnemonic_keyval;
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|
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switch (prop_id)
|
|
{
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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_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;
|
|
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_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)
|
|
{
|
|
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)
|
|
{
|
|
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;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_init (GtkLabel *label)
|
|
{
|
|
GTK_WIDGET_SET_FLAGS (label, GTK_NO_WINDOW);
|
|
|
|
label->label = NULL;
|
|
|
|
label->jtype = GTK_JUSTIFY_LEFT;
|
|
label->wrap = FALSE;
|
|
|
|
label->use_underline = FALSE;
|
|
label->use_markup = FALSE;
|
|
|
|
label->mnemonic_keyval = GDK_VoidSymbol;
|
|
label->layout = NULL;
|
|
label->text = NULL;
|
|
label->attrs = NULL;
|
|
|
|
label->mnemonic_widget = NULL;
|
|
label->mnemonic_window = NULL;
|
|
|
|
gtk_label_set_text (label, "");
|
|
}
|
|
|
|
/**
|
|
* 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 = gtk_type_new (GTK_TYPE_LABEL);
|
|
|
|
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 = gtk_type_new (GTK_TYPE_LABEL);
|
|
|
|
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 (parent && GTK_IS_NOTEBOOK (parent))
|
|
return FALSE;
|
|
|
|
while (parent)
|
|
{
|
|
if (GTK_WIDGET_CAN_FOCUS (parent) ||
|
|
(!group_cycling && GTK_WIDGET_GET_CLASS (parent)->activate_signal) ||
|
|
(parent->parent && 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.");
|
|
gdk_display_beep (gtk_widget_get_display (widget));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_label_setup_mnemonic (GtkLabel *label,
|
|
guint last_key)
|
|
{
|
|
GtkWidget *toplevel;
|
|
|
|
if (last_key != GDK_VoidSymbol && label->mnemonic_window)
|
|
{
|
|
gtk_window_remove_mnemonic (label->mnemonic_window,
|
|
last_key,
|
|
GTK_WIDGET (label));
|
|
label->mnemonic_window = NULL;
|
|
}
|
|
|
|
if (label->mnemonic_keyval == GDK_VoidSymbol)
|
|
return;
|
|
|
|
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (label));
|
|
if (GTK_WIDGET_TOPLEVEL (toplevel))
|
|
{
|
|
gtk_window_add_mnemonic (GTK_WINDOW (toplevel),
|
|
label->mnemonic_keyval,
|
|
GTK_WIDGET (label));
|
|
label->mnemonic_window = GTK_WINDOW (toplevel);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_hierarchy_changed (GtkWidget *widget,
|
|
GtkWidget *old_toplevel)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (widget);
|
|
|
|
/* in case the label has been reparented to another screen */
|
|
gtk_label_clear_layout (label);
|
|
|
|
gtk_label_setup_mnemonic (label, label->mnemonic_keyval);
|
|
}
|
|
|
|
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: 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 "mnemonic_activate" 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)
|
|
g_object_weak_unref (label->mnemonic_widget,
|
|
label_mnemonic_widget_weak_notify,
|
|
label);
|
|
label->mnemonic_widget = widget;
|
|
if (label->mnemonic_widget)
|
|
g_object_weak_ref (label->mnemonic_widget,
|
|
label_mnemonic_widget_weak_notify,
|
|
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)
|
|
{
|
|
g_object_notify (G_OBJECT (label), "use_markup");
|
|
label->use_markup = val;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_use_underline_internal (GtkLabel *label,
|
|
gboolean val)
|
|
{
|
|
val = val != FALSE;
|
|
if (label->use_underline != val)
|
|
{
|
|
g_object_notify (G_OBJECT (label), "use_underline");
|
|
label->use_underline = val;
|
|
}
|
|
}
|
|
|
|
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);
|
|
|
|
if (!label->use_markup && !label->use_underline)
|
|
{
|
|
pango_attr_list_ref (attrs);
|
|
if (label->effective_attrs)
|
|
pango_attr_list_unref (label->effective_attrs);
|
|
label->effective_attrs = 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)
|
|
{
|
|
if (label->use_markup)
|
|
set_markup (label, label->label, label->use_underline);
|
|
else
|
|
{
|
|
if (label->use_underline)
|
|
gtk_label_set_uline_text_internal (label, label->label);
|
|
else
|
|
{
|
|
gtk_label_set_text_internal (label, g_strdup (label->label));
|
|
if (label->attrs)
|
|
pango_attr_list_ref (label->attrs);
|
|
if (label->effective_attrs)
|
|
pango_attr_list_unref (label->effective_attrs);
|
|
label->effective_attrs = label->attrs;
|
|
}
|
|
}
|
|
|
|
if (!label->use_underline)
|
|
{
|
|
guint keyval = label->mnemonic_keyval;
|
|
|
|
label->mnemonic_keyval = GDK_VoidSymbol;
|
|
gtk_label_setup_mnemonic (label, keyval);
|
|
}
|
|
|
|
gtk_label_clear_layout (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. The attributes set with this function will be ignored
|
|
* if the "use_underline" property or the "use_markup" property
|
|
* is %TRUE.
|
|
**/
|
|
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_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 label->use_underline and label->use_markup.
|
|
**/
|
|
void
|
|
gtk_label_set_label (GtkLabel *label,
|
|
const gchar *str)
|
|
{
|
|
guint last_keyval;
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
g_return_if_fail (str != NULL);
|
|
|
|
last_keyval = label->mnemonic_keyval;
|
|
|
|
gtk_label_set_label_internal (label, g_strdup (str));
|
|
gtk_label_recalculate (label);
|
|
if (last_keyval != label->mnemonic_keyval)
|
|
gtk_label_setup_mnemonic (label, last_keyval);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
static void
|
|
set_markup (GtkLabel *label,
|
|
const gchar *str,
|
|
gboolean with_uline)
|
|
{
|
|
gchar *text = NULL;
|
|
GError *error = NULL;
|
|
PangoAttrList *attrs = NULL;
|
|
gunichar accel_char = 0;
|
|
|
|
if (!pango_parse_markup (str,
|
|
-1,
|
|
with_uline ? '_' : 0,
|
|
&attrs,
|
|
&text,
|
|
with_uline ? &accel_char : NULL,
|
|
&error))
|
|
{
|
|
g_warning ("Failed to set label from markup due to error parsing markup: %s",
|
|
error->message);
|
|
g_error_free (error);
|
|
return;
|
|
}
|
|
|
|
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.
|
|
**/
|
|
void
|
|
gtk_label_set_markup (GtkLabel *label,
|
|
const gchar *str)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (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);
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
guint last_keyval;
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
last_keyval = label->mnemonic_keyval;
|
|
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);
|
|
gtk_label_setup_mnemonic (label, last_keyval);
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
PangoAttrList *attrs;
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
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));
|
|
|
|
gtk_label_set_pattern_internal (label, pattern);
|
|
|
|
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_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.
|
|
**/
|
|
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;
|
|
g_object_notify (G_OBJECT (label), "wrap");
|
|
|
|
gtk_widget_queue_resize (GTK_WIDGET (label));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
void
|
|
gtk_label_get (GtkLabel *label,
|
|
gchar **str)
|
|
{
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
g_return_if_fail (str != NULL);
|
|
|
|
*str = label->text;
|
|
}
|
|
|
|
static void
|
|
gtk_label_destroy (GtkObject *object)
|
|
{
|
|
GtkLabel *label = GTK_LABEL (object);
|
|
|
|
gtk_label_set_mnemonic_widget (label, NULL);
|
|
|
|
GTK_OBJECT_CLASS (parent_class)->destroy (object);
|
|
}
|
|
|
|
static void
|
|
gtk_label_finalize (GObject *object)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (object));
|
|
|
|
label = GTK_LABEL (object);
|
|
|
|
g_free (label->label);
|
|
g_free (label->text);
|
|
|
|
if (label->layout)
|
|
g_object_unref (G_OBJECT (label->layout));
|
|
|
|
if (label->attrs)
|
|
pango_attr_list_unref (label->attrs);
|
|
|
|
if (label->effective_attrs)
|
|
pango_attr_list_unref (label->effective_attrs);
|
|
|
|
g_free (label->select_info);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gtk_label_clear_layout (GtkLabel *label)
|
|
{
|
|
if (label->layout)
|
|
{
|
|
g_object_unref (G_OBJECT (label->layout));
|
|
label->layout = NULL;
|
|
}
|
|
}
|
|
|
|
typedef struct _LabelWrapWidth LabelWrapWidth;
|
|
struct _LabelWrapWidth
|
|
{
|
|
gint width;
|
|
PangoFontDescription *font_desc;
|
|
};
|
|
|
|
static void
|
|
label_wrap_width_free (gpointer data)
|
|
{
|
|
LabelWrapWidth *wrap_width = data;
|
|
pango_font_description_free (wrap_width->font_desc);
|
|
g_free (wrap_width);
|
|
}
|
|
|
|
static gint
|
|
get_label_wrap_width (GtkLabel *label)
|
|
{
|
|
PangoLayout *layout;
|
|
GtkStyle *style = GTK_WIDGET (label)->style;
|
|
|
|
LabelWrapWidth *wrap_width = g_object_get_data (G_OBJECT (style), "gtk-label-wrap-width");
|
|
if (!wrap_width)
|
|
{
|
|
wrap_width = g_new0 (LabelWrapWidth, 1);
|
|
g_object_set_data_full (G_OBJECT (style), "gtk-label-wrap-width",
|
|
wrap_width, label_wrap_width_free);
|
|
}
|
|
|
|
if (wrap_width->font_desc && pango_font_description_equal (wrap_width->font_desc, style->font_desc))
|
|
return wrap_width->width;
|
|
|
|
if (wrap_width->font_desc)
|
|
pango_font_description_free (wrap_width->font_desc);
|
|
|
|
wrap_width->font_desc = pango_font_description_copy (style->font_desc);
|
|
|
|
layout = gtk_widget_create_pango_layout (GTK_WIDGET (label),
|
|
"This long string gives a good enough length for any line to have.");
|
|
pango_layout_get_size (layout, &wrap_width->width, NULL);
|
|
g_object_unref (layout);
|
|
|
|
return wrap_width->width;
|
|
}
|
|
|
|
static void
|
|
gtk_label_ensure_layout (GtkLabel *label)
|
|
{
|
|
GtkWidget *widget;
|
|
PangoRectangle logical_rect;
|
|
gint rwidth, rheight;
|
|
|
|
widget = GTK_WIDGET (label);
|
|
|
|
rwidth = label->misc.xpad * 2;
|
|
rheight = label->misc.ypad * 2;
|
|
|
|
if (!label->layout)
|
|
{
|
|
PangoAlignment align = PANGO_ALIGN_LEFT; /* Quiet gcc */
|
|
|
|
label->layout = gtk_widget_create_pango_layout (widget, label->text);
|
|
|
|
if (label->effective_attrs)
|
|
pango_layout_set_attributes (label->layout, label->effective_attrs);
|
|
|
|
switch (label->jtype)
|
|
{
|
|
case GTK_JUSTIFY_LEFT:
|
|
align = PANGO_ALIGN_LEFT;
|
|
break;
|
|
case GTK_JUSTIFY_RIGHT:
|
|
align = PANGO_ALIGN_RIGHT;
|
|
break;
|
|
case GTK_JUSTIFY_CENTER:
|
|
align = PANGO_ALIGN_CENTER;
|
|
break;
|
|
case GTK_JUSTIFY_FILL:
|
|
/* FIXME: This just doesn't work to do this */
|
|
align = PANGO_ALIGN_LEFT;
|
|
pango_layout_set_justify (label->layout, TRUE);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
pango_layout_set_alignment (label->layout, align);
|
|
|
|
if (label->wrap)
|
|
{
|
|
GtkWidgetAuxInfo *aux_info;
|
|
gint longest_paragraph;
|
|
gint width, height;
|
|
|
|
aux_info = _gtk_widget_get_aux_info (widget, FALSE);
|
|
if (aux_info && aux_info->width > 0)
|
|
pango_layout_set_width (label->layout, aux_info->width * 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 void
|
|
gtk_label_size_request (GtkWidget *widget,
|
|
GtkRequisition *requisition)
|
|
{
|
|
GtkLabel *label;
|
|
gint width, height;
|
|
PangoRectangle logical_rect;
|
|
GtkWidgetAuxInfo *aux_info;
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (widget));
|
|
g_return_if_fail (requisition != NULL);
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
/*
|
|
* If word wrapping is on, then the height requisition can depend
|
|
* on:
|
|
*
|
|
* - Any width set on the widget via gtk_widget_set_usize().
|
|
* - The padding of the widget (xpad, set by gtk_misc_set_padding)
|
|
*
|
|
* Instead of trying to detect changes to these quantities, if we
|
|
* are wrapping, we just rewrap for each size request. Since
|
|
* size requisitions are cached by the GTK+ core, this is not
|
|
* expensive.
|
|
*/
|
|
|
|
if (label->wrap)
|
|
gtk_label_clear_layout (label);
|
|
|
|
gtk_label_ensure_layout (label);
|
|
|
|
width = label->misc.xpad * 2;
|
|
height = label->misc.ypad * 2;
|
|
|
|
pango_layout_get_extents (label->layout, NULL, &logical_rect);
|
|
|
|
aux_info = _gtk_widget_get_aux_info (widget, FALSE);
|
|
if (label->wrap && aux_info && aux_info->width > 0)
|
|
width += aux_info->width;
|
|
else
|
|
width += PANGO_PIXELS (logical_rect.width);
|
|
|
|
height += PANGO_PIXELS (logical_rect.height);
|
|
|
|
requisition->width = width;
|
|
requisition->height = height;
|
|
}
|
|
|
|
static void
|
|
gtk_label_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
(* GTK_WIDGET_CLASS (parent_class)->size_allocate) (widget, allocation);
|
|
|
|
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_state_changed (GtkWidget *widget,
|
|
GtkStateType prev_state)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
if (label->select_info)
|
|
gtk_label_select_region (label, 0, 0);
|
|
|
|
if (GTK_WIDGET_CLASS (parent_class)->state_changed)
|
|
GTK_WIDGET_CLASS (parent_class)->state_changed (widget, prev_state);
|
|
}
|
|
|
|
static void
|
|
gtk_label_style_set (GtkWidget *widget,
|
|
GtkStyle *previous_style)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (widget));
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
/* We have to clear the layout, fonts etc. may have changed */
|
|
gtk_label_clear_layout (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 (parent_class)->direction_changed (widget, previous_dir);
|
|
}
|
|
|
|
#if 0
|
|
static void
|
|
gtk_label_paint_word (GtkLabel *label,
|
|
gint x,
|
|
gint y,
|
|
GtkLabelWord *word,
|
|
GdkRectangle *area)
|
|
{
|
|
GtkWidget *widget = GTK_WIDGET (label);
|
|
GtkLabelULine *uline;
|
|
gchar *tmp_str;
|
|
|
|
tmp_str = gdk_wcstombs (word->beginning);
|
|
if (tmp_str)
|
|
{
|
|
gtk_paint_string (widget->style, widget->window, widget->state,
|
|
area, widget, "label",
|
|
x + word->x,
|
|
y + word->y,
|
|
tmp_str);
|
|
g_free (tmp_str);
|
|
}
|
|
|
|
for (uline = word->uline; uline; uline = uline->next)
|
|
gtk_paint_hline (widget->style, widget->window,
|
|
widget->state, area,
|
|
widget, "label",
|
|
x + uline->x1, x + uline->x2, y + uline->y);
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
get_layout_location (GtkLabel *label,
|
|
gint *xp,
|
|
gint *yp)
|
|
{
|
|
GtkMisc *misc;
|
|
GtkWidget *widget;
|
|
gfloat xalign;
|
|
gint x, y;
|
|
|
|
misc = GTK_MISC (label);
|
|
widget = GTK_WIDGET (label);
|
|
|
|
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
|
|
xalign = misc->xalign;
|
|
else
|
|
xalign = 1.0 - misc->xalign;
|
|
|
|
x = floor (widget->allocation.x + (gint)misc->xpad +
|
|
xalign * (widget->allocation.width - widget->requisition.width)
|
|
+ 0.5);
|
|
|
|
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 -
|
|
widget->requisition.width - misc->xpad);
|
|
|
|
y = floor (widget->allocation.y + (gint)misc->ypad
|
|
+ MAX (((widget->allocation.height - widget->requisition.height) * misc->yalign)
|
|
+ 0.5, 0));
|
|
|
|
if (xp)
|
|
*xp = x;
|
|
|
|
if (yp)
|
|
*yp = y;
|
|
}
|
|
|
|
static void
|
|
gtk_label_draw_cursor (GtkLabel *label, gint xoffset, gint yoffset)
|
|
{
|
|
if (label->select_info == NULL)
|
|
return;
|
|
|
|
if (GTK_WIDGET_DRAWABLE (label))
|
|
{
|
|
GtkWidget *widget = GTK_WIDGET (label);
|
|
|
|
GtkTextDirection keymap_direction;
|
|
GtkTextDirection widget_direction;
|
|
PangoRectangle strong_pos, weak_pos;
|
|
gboolean split_cursor;
|
|
PangoRectangle *cursor1 = NULL;
|
|
PangoRectangle *cursor2 = NULL;
|
|
GdkRectangle cursor_location;
|
|
GtkTextDirection dir1 = GTK_TEXT_DIR_NONE;
|
|
GtkTextDirection dir2 = GTK_TEXT_DIR_NONE;
|
|
GdkGC *gc;
|
|
|
|
keymap_direction =
|
|
(gdk_keymap_get_direction (gdk_keymap_get_for_display (gtk_widget_get_display (widget))) == PANGO_DIRECTION_LTR) ?
|
|
GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;
|
|
|
|
widget_direction = gtk_widget_get_direction (widget);
|
|
|
|
gtk_label_ensure_layout (label);
|
|
|
|
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 = widget_direction;
|
|
|
|
if (split_cursor)
|
|
{
|
|
cursor1 = &strong_pos;
|
|
|
|
if (strong_pos.x != weak_pos.x ||
|
|
strong_pos.y != weak_pos.y)
|
|
{
|
|
dir2 = (widget_direction == GTK_TEXT_DIR_LTR) ? GTK_TEXT_DIR_RTL : GTK_TEXT_DIR_LTR;
|
|
cursor2 = &weak_pos;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (keymap_direction == widget_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);
|
|
|
|
gc = _gtk_get_insertion_cursor_gc (widget, TRUE);
|
|
_gtk_draw_insertion_cursor (widget, widget->window, gc,
|
|
&cursor_location, dir1,
|
|
dir2 != GTK_TEXT_DIR_NONE);
|
|
g_object_unref (gc);
|
|
|
|
if (dir2 != GTK_TEXT_DIR_NONE)
|
|
{
|
|
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);
|
|
|
|
gc = _gtk_get_insertion_cursor_gc (widget, FALSE);
|
|
_gtk_draw_insertion_cursor (widget, widget->window, gc,
|
|
&cursor_location, dir2, TRUE);
|
|
g_object_unref (gc);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static gint
|
|
gtk_label_expose (GtkWidget *widget,
|
|
GdkEventExpose *event)
|
|
{
|
|
GtkLabel *label;
|
|
gint x, y;
|
|
|
|
g_return_val_if_fail (GTK_IS_LABEL (widget), FALSE);
|
|
g_return_val_if_fail (event != NULL, FALSE);
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
gtk_label_ensure_layout (label);
|
|
|
|
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget) &&
|
|
label->text && (*label->text != '\0'))
|
|
{
|
|
get_layout_location (label, &x, &y);
|
|
|
|
gtk_paint_layout (widget->style,
|
|
widget->window,
|
|
GTK_WIDGET_STATE (widget),
|
|
FALSE,
|
|
&event->area,
|
|
widget,
|
|
"label",
|
|
x, y,
|
|
label->layout);
|
|
|
|
if (label->select_info &&
|
|
(label->select_info->selection_anchor !=
|
|
label->select_info->selection_end))
|
|
{
|
|
gint range[2];
|
|
GdkRegion *clip;
|
|
GtkStateType state;
|
|
|
|
range[0] = label->select_info->selection_anchor;
|
|
range[1] = label->select_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);
|
|
|
|
/* 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);
|
|
gdk_region_destroy (clip);
|
|
}
|
|
else if (label->select_info && GTK_WIDGET_HAS_FOCUS (widget))
|
|
gtk_label_draw_cursor (label, x, y);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_label_set_uline_text_internal (GtkLabel *label,
|
|
const gchar *str)
|
|
{
|
|
guint accel_key = GDK_VoidSymbol;
|
|
|
|
gchar *new_str;
|
|
gchar *pattern;
|
|
const gchar *src;
|
|
gchar *dest, *pattern_dest;
|
|
gboolean underscore;
|
|
|
|
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.
|
|
*/
|
|
|
|
new_str = g_new (gchar, strlen (str) + 1);
|
|
pattern = g_new (gchar, g_utf8_strlen (str, -1) + 1);
|
|
|
|
underscore = FALSE;
|
|
|
|
if (str == NULL)
|
|
str = "";
|
|
|
|
src = str;
|
|
dest = new_str;
|
|
pattern_dest = pattern;
|
|
|
|
while (*src)
|
|
{
|
|
gunichar c;
|
|
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;
|
|
}
|
|
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;
|
|
|
|
gtk_label_set_text_internal (label, new_str);
|
|
gtk_label_set_pattern_internal (label, pattern);
|
|
|
|
g_free (pattern);
|
|
|
|
label->mnemonic_keyval = accel_key;
|
|
}
|
|
|
|
guint
|
|
gtk_label_parse_uline (GtkLabel *label,
|
|
const gchar *str)
|
|
{
|
|
guint keyval;
|
|
guint orig_keyval;
|
|
|
|
g_return_val_if_fail (GTK_IS_LABEL (label), GDK_VoidSymbol);
|
|
g_return_val_if_fail (str != NULL, GDK_VoidSymbol);
|
|
|
|
orig_keyval = label->mnemonic_keyval;
|
|
|
|
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);
|
|
|
|
keyval = label->mnemonic_keyval;
|
|
label->mnemonic_keyval = GDK_VoidSymbol;
|
|
|
|
gtk_label_setup_mnemonic (label, orig_keyval);
|
|
|
|
g_object_thaw_notify (G_OBJECT (label));
|
|
|
|
return keyval;
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
guint last_keyval;
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
g_return_if_fail (str != NULL);
|
|
|
|
last_keyval = label->mnemonic_keyval;
|
|
|
|
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);
|
|
|
|
gtk_label_setup_mnemonic (label, last_keyval);
|
|
|
|
g_object_thaw_notify (G_OBJECT (label));
|
|
}
|
|
|
|
static void
|
|
gtk_label_realize (GtkWidget *widget)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
(* GTK_WIDGET_CLASS (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 (parent_class)->unrealize) (widget);
|
|
}
|
|
|
|
static void
|
|
gtk_label_map (GtkWidget *widget)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
(* GTK_WIDGET_CLASS (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 (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 void
|
|
get_layout_index (GtkLabel *label,
|
|
gint x,
|
|
gint y,
|
|
gint *index)
|
|
{
|
|
gint trailing = 0;
|
|
const gchar *cluster;
|
|
const gchar *cluster_end;
|
|
|
|
*index = 0;
|
|
|
|
gtk_label_ensure_layout (label);
|
|
|
|
window_to_layout_coords (label, &x, &y);
|
|
|
|
x *= PANGO_SCALE;
|
|
y *= PANGO_SCALE;
|
|
|
|
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);
|
|
}
|
|
|
|
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 gint
|
|
gtk_label_button_press (GtkWidget *widget,
|
|
GdkEventButton *event)
|
|
{
|
|
GtkLabel *label;
|
|
gint index = 0;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
if (label->select_info == NULL)
|
|
return FALSE;
|
|
|
|
if (event->button == 1)
|
|
{
|
|
if (!GTK_WIDGET_HAS_FOCUS (widget))
|
|
gtk_widget_grab_focus (widget);
|
|
|
|
if (event->type == GDK_3BUTTON_PRESS)
|
|
{
|
|
gtk_label_select_region_index (label, 0, strlen (label->text));
|
|
return TRUE;
|
|
}
|
|
|
|
if (event->type == GDK_2BUTTON_PRESS)
|
|
{
|
|
gtk_label_select_word (label);
|
|
return TRUE;
|
|
}
|
|
|
|
get_layout_index (label, event->x, event->y, &index);
|
|
|
|
if ((label->select_info->selection_anchor !=
|
|
label->select_info->selection_end) &&
|
|
(event->state & GDK_SHIFT_MASK))
|
|
{
|
|
gint min, max;
|
|
|
|
/* extend (same as motion) */
|
|
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, 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
|
|
/* 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 gint
|
|
gtk_label_button_release (GtkWidget *widget,
|
|
GdkEventButton *event)
|
|
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
if (label->select_info == NULL)
|
|
return FALSE;
|
|
|
|
if (event->button != 1)
|
|
return FALSE;
|
|
|
|
/* The goal here is to return TRUE iff we ate the
|
|
* button press to start selecting.
|
|
*/
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gint
|
|
gtk_label_motion (GtkWidget *widget,
|
|
GdkEventMotion *event)
|
|
{
|
|
GtkLabel *label;
|
|
gint index;
|
|
gint x, y;
|
|
|
|
label = GTK_LABEL (widget);
|
|
|
|
if (label->select_info == NULL)
|
|
return FALSE;
|
|
|
|
if ((event->state & GDK_BUTTON1_MASK) == 0)
|
|
return FALSE;
|
|
|
|
gdk_window_get_pointer (label->select_info->window,
|
|
&x, &y, NULL);
|
|
|
|
get_layout_index (label, x, y, &index);
|
|
|
|
gtk_label_select_region_index (label,
|
|
label->select_info->selection_anchor,
|
|
index);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gtk_label_create_window (GtkLabel *label)
|
|
{
|
|
GtkWidget *widget;
|
|
GdkWindowAttr attributes;
|
|
gint attributes_mask;
|
|
|
|
g_assert (label->select_info);
|
|
g_assert (GTK_WIDGET_REALIZED (label));
|
|
|
|
if (label->select_info->window)
|
|
return;
|
|
|
|
widget = GTK_WIDGET (label);
|
|
|
|
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_TEMP;
|
|
attributes.wclass = GDK_INPUT_ONLY;
|
|
attributes.override_redirect = TRUE;
|
|
attributes.cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
|
|
GDK_XTERM);
|
|
attributes.event_mask = gtk_widget_get_events (widget) |
|
|
GDK_BUTTON_PRESS_MASK |
|
|
GDK_BUTTON_RELEASE_MASK |
|
|
GDK_BUTTON_MOTION_MASK;
|
|
|
|
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_NOREDIR | 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);
|
|
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* 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 != NULL;
|
|
|
|
if (setting)
|
|
{
|
|
if (label->select_info == NULL)
|
|
{
|
|
label->select_info = g_new0 (GtkLabelSelectionInfo, 1);
|
|
|
|
GTK_WIDGET_SET_FLAGS (label, GTK_CAN_FOCUS);
|
|
|
|
if (GTK_WIDGET_REALIZED (label))
|
|
gtk_label_create_window (label);
|
|
|
|
if (GTK_WIDGET_MAPPED (label))
|
|
gdk_window_show (label->select_info->window);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (label->select_info)
|
|
{
|
|
/* unselect, to give up the selection */
|
|
gtk_label_select_region (label, 0, 0);
|
|
|
|
if (label->select_info->window)
|
|
{
|
|
gtk_label_destroy_window (label);
|
|
}
|
|
|
|
g_free (label->select_info);
|
|
|
|
label->select_info = NULL;
|
|
|
|
GTK_WIDGET_UNSET_FLAGS (label, GTK_CAN_FOCUS);
|
|
}
|
|
}
|
|
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 != NULL;
|
|
}
|
|
|
|
static void
|
|
get_text_callback (GtkClipboard *clipboard,
|
|
GtkSelectionData *selection_data,
|
|
guint info,
|
|
gpointer user_data_or_owner)
|
|
{
|
|
GtkLabel *label;
|
|
|
|
label = GTK_LABEL (user_data_or_owner);
|
|
|
|
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
|
|
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)
|
|
{
|
|
static const GtkTargetEntry targets[] = {
|
|
{ "STRING", 0, 0 },
|
|
{ "TEXT", 0, 0 },
|
|
{ "COMPOUND_TEXT", 0, 0 },
|
|
{ "UTF8_STRING", 0, 0 }
|
|
};
|
|
|
|
g_return_if_fail (GTK_IS_LABEL (label));
|
|
|
|
if (label->select_info)
|
|
{
|
|
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)
|
|
{
|
|
gtk_clipboard_set_with_owner (clipboard,
|
|
targets,
|
|
G_N_ELEMENTS (targets),
|
|
get_text_callback,
|
|
clear_text_callback,
|
|
G_OBJECT (label));
|
|
}
|
|
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: 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);
|
|
|
|
return label->layout;
|
|
}
|
|
|
|
/**
|
|
* gtk_label_get_layout_offsets:
|
|
* @label: a #GtkLabel
|
|
* @x: location to store X offset of layout, or %NULL
|
|
* @y: 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));
|
|
|
|
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);
|
|
if (label->use_underline)
|
|
gtk_label_setup_mnemonic (label, label->mnemonic_keyval);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_label_focus (GtkWidget *widget,
|
|
GtkDirectionType direction)
|
|
{
|
|
/* We never want to be in the tab chain */
|
|
return FALSE;
|
|
}
|
|
|
|
/* 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)));
|
|
GtkTextDirection keymap_direction =
|
|
(gdk_keymap_get_direction (keymap) == PANGO_DIRECTION_LTR) ?
|
|
GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;
|
|
GtkTextDirection widget_direction = gtk_widget_get_direction (GTK_WIDGET (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);
|
|
|
|
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 == widget_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);
|
|
|
|
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);
|
|
|
|
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)));
|
|
GtkTextDirection keymap_direction =
|
|
(gdk_keymap_get_direction (keymap) == PANGO_DIRECTION_LTR) ?
|
|
GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;
|
|
|
|
strong = keymap_direction == gtk_widget_get_direction (GTK_WIDGET (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);
|
|
|
|
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);
|
|
gint length;
|
|
|
|
length = g_utf8_strlen (label->text, -1);
|
|
|
|
if (new_pos > 0)
|
|
{
|
|
PangoLogAttr *log_attrs;
|
|
gint n_attrs;
|
|
|
|
gtk_label_ensure_layout (label);
|
|
|
|
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 new_pos;
|
|
|
|
if (label->select_info == NULL)
|
|
return;
|
|
|
|
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:
|
|
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);
|
|
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++;
|
|
}
|
|
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:
|
|
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;
|
|
|
|
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;
|
|
|
|
if (start != end)
|
|
gtk_clipboard_set_text (gtk_widget_get_clipboard (GTK_WIDGET (label),
|
|
GDK_SELECTION_CLIPBOARD),
|
|
label->text + start, end - start);
|
|
}
|
|
}
|
|
|
|
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 = gtk_object_get_data (GTK_OBJECT (menuitem), "gtk-signal");
|
|
gtk_signal_emit_by_name (GTK_OBJECT (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);
|
|
|
|
gtk_object_set_data (GTK_OBJECT (menuitem), "gtk-signal", (char *)signal);
|
|
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
|
|
GTK_SIGNAL_FUNC (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;
|
|
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);
|
|
|
|
if (label->select_info == NULL)
|
|
return;
|
|
|
|
g_return_if_fail (GTK_WIDGET_REALIZED (label));
|
|
|
|
screen = gtk_widget_get_screen (widget);
|
|
gdk_window_get_origin (widget->window, x, y);
|
|
|
|
gtk_widget_size_request (label->select_info->popup_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
|
|
gtk_label_do_popup (GtkLabel *label,
|
|
GdkEventButton *event)
|
|
{
|
|
GtkWidget *menuitem;
|
|
gboolean have_selection;
|
|
|
|
if (label->select_info == NULL)
|
|
return;
|
|
|
|
if (label->select_info->popup_menu)
|
|
gtk_widget_destroy (label->select_info->popup_menu);
|
|
|
|
label->select_info->popup_menu = gtk_menu_new ();
|
|
|
|
gtk_menu_attach_to_widget (GTK_MENU (label->select_info->popup_menu),
|
|
GTK_WIDGET (label),
|
|
popup_menu_detach);
|
|
|
|
have_selection =
|
|
label->select_info->selection_anchor != label->select_info->selection_end;
|
|
|
|
|
|
append_action_signal (label, label->select_info->popup_menu, GTK_STOCK_CUT, "cut_clipboard",
|
|
FALSE);
|
|
append_action_signal (label, label->select_info->popup_menu, GTK_STOCK_COPY, "copy_clipboard",
|
|
have_selection);
|
|
append_action_signal (label, label->select_info->popup_menu, GTK_STOCK_PASTE, "paste_clipboard",
|
|
FALSE);
|
|
|
|
menuitem = gtk_menu_item_new_with_label (_("Select All"));
|
|
gtk_signal_connect_object (GTK_OBJECT (menuitem), "activate",
|
|
GTK_SIGNAL_FUNC (gtk_label_select_all), label);
|
|
gtk_widget_show (menuitem);
|
|
gtk_menu_shell_append (GTK_MENU_SHELL (label->select_info->popup_menu), menuitem);
|
|
|
|
menuitem = gtk_separator_menu_item_new ();
|
|
gtk_widget_show (menuitem);
|
|
gtk_menu_shell_append (GTK_MENU_SHELL (label->select_info->popup_menu), menuitem);
|
|
|
|
menuitem = gtk_menu_item_new_with_label (_("Input Methods"));
|
|
gtk_widget_show (menuitem);
|
|
gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), gtk_menu_new ());
|
|
gtk_widget_set_sensitive (menuitem, FALSE);
|
|
gtk_menu_shell_append (GTK_MENU_SHELL (label->select_info->popup_menu), menuitem);
|
|
|
|
gtk_signal_emit (GTK_OBJECT (label),
|
|
signals[POPULATE_POPUP],
|
|
label->select_info->popup_menu);
|
|
|
|
if (event)
|
|
gtk_menu_popup (GTK_MENU (label->select_info->popup_menu), NULL, NULL,
|
|
NULL, NULL,
|
|
event->button, event->time);
|
|
else
|
|
gtk_menu_popup (GTK_MENU (label->select_info->popup_menu), NULL, NULL,
|
|
popup_position_func, label,
|
|
0, gtk_get_current_event_time ());
|
|
}
|