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gtk2/gtk/gtktextview.c
Havoc Pennington cc910abb42 Update the IM spot location here, if text was invalidated in the visible 
2001-10-30  Havoc Pennington  <hp@pobox.com>

	* gtk/gtktextview.c (changed_handler): Update the IM spot location
	here, if text was invalidated in the visible area, because the
	scroll offset doesn't normally change in that case, and the mark
	isn't set, just implicitly moved over as text is added/removed
2001-10-30 14:15:01 +00:00

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/* GTK - The GIMP Toolkit
* gtktextview.c Copyright (C) 2000 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <string.h>
#define GTK_TEXT_USE_INTERNAL_UNSUPPORTED_API
#include "gtkbindings.h"
#include "gtkdnd.h"
#include "gtkimagemenuitem.h"
#include "gtkintl.h"
#include "gtkmain.h"
#include "gtkmenu.h"
#include "gtkmenuitem.h"
#include "gtkseparatormenuitem.h"
#include "gtksettings.h"
#include "gtksignal.h"
#include "gtkstock.h"
#include "gtktextdisplay.h"
#include "gtktextview.h"
#include "gtkimmulticontext.h"
#include "gdk/gdkkeysyms.h"
#include <string.h>
/* How scrolling, validation, exposes, etc. work.
*
* The expose_event handler has the invariant that the onscreen lines
* have been validated.
*
* There are two ways that onscreen lines can become invalid. The first
* is to change which lines are onscreen. This happens when the value
* of a scroll adjustment changes. So the code path begins in
* gtk_text_view_value_changed() and goes like this:
* - gdk_window_scroll() to reflect the new adjustment value
* - validate the lines that were moved onscreen
* - gdk_window_process_updates() to handle the exposes immediately
*
* The second way is that you get the "invalidated" signal from the layout,
* indicating that lines have become invalid. This code path begins in
* invalidated_handler() and goes like this:
* - install high-priority idle which does the rest of the steps
* - if a scroll is pending from scroll_to_mark(), do the scroll,
* jumping to the gtk_text_view_value_changed() code path
* - otherwise, validate the onscreen lines
* - DO NOT process updates
*
* In both cases, validating the onscreen lines can trigger a scroll
* due to maintaining the first_para on the top of the screen.
* If validation triggers a scroll, we jump to the top of the code path
* for value_changed, and bail out of the current code path.
*
* Also, in size_allocate, if we invalidate some lines from changing
* the layout width, we need to go ahead and run the high-priority idle,
* because GTK sends exposes right after doing the size allocates without
* returning to the main loop. This is also why the high-priority idle
* is at a higher priority than resizing.
*
*/
#define SCREEN_WIDTH(widget) text_window_get_width (GTK_TEXT_VIEW (widget)->text_window)
#define SCREEN_HEIGHT(widget) text_window_get_height (GTK_TEXT_VIEW (widget)->text_window)
#if 0
#define DEBUG_VALIDATION_AND_SCROLLING
#endif
#ifdef DEBUG_VALIDATION_AND_SCROLLING
#define DV(x) (x)
#else
#define DV(x)
#endif
struct _GtkTextPendingScroll
{
GtkTextMark *mark;
gdouble within_margin;
gboolean use_align;
gdouble xalign;
gdouble yalign;
};
enum
{
SET_SCROLL_ADJUSTMENTS,
POPULATE_POPUP,
MOVE_CURSOR,
SET_ANCHOR,
INSERT_AT_CURSOR,
DELETE_FROM_CURSOR,
CUT_CLIPBOARD,
COPY_CLIPBOARD,
PASTE_CLIPBOARD,
TOGGLE_OVERWRITE,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_PIXELS_ABOVE_LINES,
PROP_PIXELS_BELOW_LINES,
PROP_PIXELS_INSIDE_WRAP,
PROP_EDITABLE,
PROP_WRAP_MODE,
PROP_JUSTIFICATION,
PROP_LEFT_MARGIN,
PROP_RIGHT_MARGIN,
PROP_INDENT,
PROP_TABS,
PROP_CURSOR_VISIBLE,
LAST_PROP
};
static void gtk_text_view_init (GtkTextView *text_view);
static void gtk_text_view_class_init (GtkTextViewClass *klass);
static void gtk_text_view_destroy (GtkObject *object);
static void gtk_text_view_finalize (GObject *object);
static void gtk_text_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_text_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_text_view_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_text_view_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_text_view_realize (GtkWidget *widget);
static void gtk_text_view_unrealize (GtkWidget *widget);
static void gtk_text_view_style_set (GtkWidget *widget,
GtkStyle *previous_style);
static void gtk_text_view_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction);
static gint gtk_text_view_event (GtkWidget *widget,
GdkEvent *event);
static gint gtk_text_view_key_press_event (GtkWidget *widget,
GdkEventKey *event);
static gint gtk_text_view_key_release_event (GtkWidget *widget,
GdkEventKey *event);
static gint gtk_text_view_button_press_event (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_text_view_button_release_event (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_text_view_focus_in_event (GtkWidget *widget,
GdkEventFocus *event);
static gint gtk_text_view_focus_out_event (GtkWidget *widget,
GdkEventFocus *event);
static gint gtk_text_view_motion_event (GtkWidget *widget,
GdkEventMotion *event);
static gint gtk_text_view_expose_event (GtkWidget *widget,
GdkEventExpose *expose);
static void gtk_text_view_draw_focus (GtkWidget *widget);
static void gtk_text_view_grab_focus (GtkWidget *widget);
/* Source side drag signals */
static void gtk_text_view_drag_begin (GtkWidget *widget,
GdkDragContext *context);
static void gtk_text_view_drag_end (GtkWidget *widget,
GdkDragContext *context);
static void gtk_text_view_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time);
static void gtk_text_view_drag_data_delete (GtkWidget *widget,
GdkDragContext *context);
/* Target side drag signals */
static void gtk_text_view_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time);
static gboolean gtk_text_view_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static gboolean gtk_text_view_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static void gtk_text_view_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint time);
static void gtk_text_view_set_scroll_adjustments (GtkTextView *text_view,
GtkAdjustment *hadj,
GtkAdjustment *vadj);
static void gtk_text_view_popup_menu (GtkWidget *widget);
static void gtk_text_view_move_cursor (GtkTextView *text_view,
GtkMovementStep step,
gint count,
gboolean extend_selection);
static void gtk_text_view_set_anchor (GtkTextView *text_view);
static void gtk_text_view_scroll_pages (GtkTextView *text_view,
gint count);
static void gtk_text_view_insert_at_cursor (GtkTextView *text_view,
const gchar *str);
static void gtk_text_view_delete_from_cursor (GtkTextView *text_view,
GtkDeleteType type,
gint count);
static void gtk_text_view_cut_clipboard (GtkTextView *text_view);
static void gtk_text_view_copy_clipboard (GtkTextView *text_view);
static void gtk_text_view_paste_clipboard (GtkTextView *text_view);
static void gtk_text_view_toggle_overwrite (GtkTextView *text_view);
static void gtk_text_view_unselect (GtkTextView *text_view);
static void gtk_text_view_validate_onscreen (GtkTextView *text_view);
static void gtk_text_view_get_first_para_iter (GtkTextView *text_view,
GtkTextIter *iter);
static void gtk_text_view_update_layout_width (GtkTextView *text_view);
static void gtk_text_view_set_attributes_from_style (GtkTextView *text_view,
GtkTextAttributes *values,
GtkStyle *style);
static void gtk_text_view_ensure_layout (GtkTextView *text_view);
static void gtk_text_view_destroy_layout (GtkTextView *text_view);
static void gtk_text_view_check_keymap_direction (GtkTextView *text_view);
static void gtk_text_view_reset_im_context (GtkTextView *text_view);
static void gtk_text_view_start_selection_drag (GtkTextView *text_view,
const GtkTextIter *iter,
GdkEventButton *event);
static gboolean gtk_text_view_end_selection_drag (GtkTextView *text_view,
GdkEventButton *event);
static void gtk_text_view_start_selection_dnd (GtkTextView *text_view,
const GtkTextIter *iter,
GdkEventMotion *event);
static void gtk_text_view_check_cursor_blink (GtkTextView *text_view);
static void gtk_text_view_pend_cursor_blink (GtkTextView *text_view);
static void gtk_text_view_stop_cursor_blink (GtkTextView *text_view);
static void gtk_text_view_value_changed (GtkAdjustment *adj,
GtkTextView *view);
static void gtk_text_view_commit_handler (GtkIMContext *context,
const gchar *str,
GtkTextView *text_view);
static void gtk_text_view_preedit_changed_handler (GtkIMContext *context,
GtkTextView *text_view);
static void gtk_text_view_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data);
static void gtk_text_view_get_virtual_cursor_pos (GtkTextView *text_view,
gint *x,
gint *y);
static void gtk_text_view_set_virtual_cursor_pos (GtkTextView *text_view,
gint x,
gint y);
static GtkAdjustment* get_hadjustment (GtkTextView *text_view);
static GtkAdjustment* get_vadjustment (GtkTextView *text_view);
static void gtk_text_view_do_popup (GtkTextView *text_view,
GdkEventButton *event);
static void gtk_text_view_queue_scroll (GtkTextView *text_view,
GtkTextMark *mark,
gdouble within_margin,
gboolean use_align,
gdouble xalign,
gdouble yalign);
static gboolean gtk_text_view_flush_scroll (GtkTextView *text_view);
static void gtk_text_view_update_adjustments (GtkTextView *text_view);
static void gtk_text_view_invalidate (GtkTextView *text_view);
static void gtk_text_view_update_im_spot_location (GtkTextView *text_view);
/* Container methods */
static void gtk_text_view_add (GtkContainer *container,
GtkWidget *child);
static void gtk_text_view_remove (GtkContainer *container,
GtkWidget *child);
static void gtk_text_view_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
/* FIXME probably need the focus methods. */
typedef struct _GtkTextViewChild GtkTextViewChild;
struct _GtkTextViewChild
{
GtkWidget *widget;
GtkTextChildAnchor *anchor;
gint from_top_of_line;
gint from_left_of_buffer;
/* These are ignored if anchor != NULL */
GtkTextWindowType type;
gint x;
gint y;
};
static GtkTextViewChild* text_view_child_new_anchored (GtkWidget *child,
GtkTextChildAnchor *anchor,
GtkTextLayout *layout);
static GtkTextViewChild* text_view_child_new_window (GtkWidget *child,
GtkTextWindowType type,
gint x,
gint y);
static void text_view_child_free (GtkTextViewChild *child);
static void text_view_child_set_parent_window (GtkTextView *text_view,
GtkTextViewChild *child);
struct _GtkTextWindow
{
GtkTextWindowType type;
GtkWidget *widget;
GdkWindow *window;
GdkWindow *bin_window;
GtkRequisition requisition;
GdkRectangle allocation;
};
static GtkTextWindow *text_window_new (GtkTextWindowType type,
GtkWidget *widget,
gint width_request,
gint height_request);
static void text_window_free (GtkTextWindow *win);
static void text_window_realize (GtkTextWindow *win,
GdkWindow *parent);
static void text_window_unrealize (GtkTextWindow *win);
static void text_window_size_allocate (GtkTextWindow *win,
GdkRectangle *rect);
static void text_window_scroll (GtkTextWindow *win,
gint dx,
gint dy);
static void text_window_invalidate_rect (GtkTextWindow *win,
GdkRectangle *rect);
static gint text_window_get_width (GtkTextWindow *win);
static gint text_window_get_height (GtkTextWindow *win);
static void text_window_get_allocation (GtkTextWindow *win,
GdkRectangle *rect);
enum
{
TARGET_STRING,
TARGET_TEXT,
TARGET_COMPOUND_TEXT,
TARGET_UTF8_STRING,
TARGET_TEXT_BUFFER_CONTENTS
};
static GtkTargetEntry target_table[] = {
{ "GTK_TEXT_BUFFER_CONTENTS", GTK_TARGET_SAME_APP,
TARGET_TEXT_BUFFER_CONTENTS },
{ "UTF8_STRING", 0, TARGET_UTF8_STRING },
{ "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT },
{ "TEXT", 0, TARGET_TEXT },
{ "text/plain", 0, TARGET_STRING },
{ "STRING", 0, TARGET_STRING }
};
static GtkContainerClass *parent_class = NULL;
static guint signals[LAST_SIGNAL] = { 0 };
GtkType
gtk_text_view_get_type (void)
{
static GtkType our_type = 0;
if (our_type == 0)
{
static const GtkTypeInfo our_info =
{
"GtkTextView",
sizeof (GtkTextView),
sizeof (GtkTextViewClass),
(GtkClassInitFunc) gtk_text_view_class_init,
(GtkObjectInitFunc) gtk_text_view_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
our_type = gtk_type_unique (GTK_TYPE_CONTAINER, &our_info);
}
return our_type;
}
static void
add_move_binding (GtkBindingSet *binding_set,
guint keyval,
guint modmask,
GtkMovementStep step,
gint count)
{
g_return_if_fail ((modmask & GDK_SHIFT_MASK) == 0);
gtk_binding_entry_add_signal (binding_set, keyval, modmask,
"move_cursor", 3,
GTK_TYPE_ENUM, step,
GTK_TYPE_INT, count,
GTK_TYPE_BOOL, FALSE);
/* Selection-extending version */
gtk_binding_entry_add_signal (binding_set, keyval, modmask | GDK_SHIFT_MASK,
"move_cursor", 3,
GTK_TYPE_ENUM, step,
GTK_TYPE_INT, count,
GTK_TYPE_BOOL, TRUE);
}
static void
gtk_text_view_class_init (GtkTextViewClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
GtkBindingSet *binding_set;
parent_class = gtk_type_class (GTK_TYPE_CONTAINER);
/* Default handlers and virtual methods
*/
gobject_class->set_property = gtk_text_view_set_property;
gobject_class->get_property = gtk_text_view_get_property;
object_class->destroy = gtk_text_view_destroy;
gobject_class->finalize = gtk_text_view_finalize;
widget_class->realize = gtk_text_view_realize;
widget_class->unrealize = gtk_text_view_unrealize;
widget_class->style_set = gtk_text_view_style_set;
widget_class->direction_changed = gtk_text_view_direction_changed;
widget_class->size_request = gtk_text_view_size_request;
widget_class->size_allocate = gtk_text_view_size_allocate;
widget_class->event = gtk_text_view_event;
widget_class->key_press_event = gtk_text_view_key_press_event;
widget_class->key_release_event = gtk_text_view_key_release_event;
widget_class->button_press_event = gtk_text_view_button_press_event;
widget_class->button_release_event = gtk_text_view_button_release_event;
widget_class->focus_in_event = gtk_text_view_focus_in_event;
widget_class->focus_out_event = gtk_text_view_focus_out_event;
widget_class->motion_notify_event = gtk_text_view_motion_event;
widget_class->expose_event = gtk_text_view_expose_event;
widget_class->grab_focus = gtk_text_view_grab_focus;
widget_class->drag_begin = gtk_text_view_drag_begin;
widget_class->drag_end = gtk_text_view_drag_end;
widget_class->drag_data_get = gtk_text_view_drag_data_get;
widget_class->drag_data_delete = gtk_text_view_drag_data_delete;
widget_class->drag_leave = gtk_text_view_drag_leave;
widget_class->drag_motion = gtk_text_view_drag_motion;
widget_class->drag_drop = gtk_text_view_drag_drop;
widget_class->drag_data_received = gtk_text_view_drag_data_received;
widget_class->popup_menu = gtk_text_view_popup_menu;
container_class->add = gtk_text_view_add;
container_class->remove = gtk_text_view_remove;
container_class->forall = gtk_text_view_forall;
klass->move_cursor = gtk_text_view_move_cursor;
klass->set_anchor = gtk_text_view_set_anchor;
klass->insert_at_cursor = gtk_text_view_insert_at_cursor;
klass->delete_from_cursor = gtk_text_view_delete_from_cursor;
klass->cut_clipboard = gtk_text_view_cut_clipboard;
klass->copy_clipboard = gtk_text_view_copy_clipboard;
klass->paste_clipboard = gtk_text_view_paste_clipboard;
klass->toggle_overwrite = gtk_text_view_toggle_overwrite;
klass->set_scroll_adjustments = gtk_text_view_set_scroll_adjustments;
/*
* Properties
*/
g_object_class_install_property (gobject_class,
PROP_PIXELS_ABOVE_LINES,
g_param_spec_int ("pixels_above_lines",
_("Pixels Above Lines"),
_("Pixels of blank space above paragraphs"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_PIXELS_BELOW_LINES,
g_param_spec_int ("pixels_below_lines",
_("Pixels Below Lines"),
_("Pixels of blank space below paragraphs"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_PIXELS_INSIDE_WRAP,
g_param_spec_int ("pixels_inside_wrap",
_("Pixels Inside Wrap"),
_("Pixels of blank space between wrapped lines in a paragraph"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_EDITABLE,
g_param_spec_boolean ("editable",
_("Editable"),
_("Whether the text can be modified by the user"),
TRUE,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_WRAP_MODE,
g_param_spec_enum ("wrap_mode",
_("Wrap Mode"),
_("Whether to wrap lines never, at word boundaries, or at character boundaries"),
GTK_TYPE_WRAP_MODE,
GTK_WRAP_NONE,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_JUSTIFICATION,
g_param_spec_enum ("justification",
_("Justification"),
_("Left, right, or center justification"),
GTK_TYPE_JUSTIFICATION,
GTK_JUSTIFY_LEFT,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_LEFT_MARGIN,
g_param_spec_int ("left_margin",
_("Left Margin"),
_("Width of the left margin in pixels"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_RIGHT_MARGIN,
g_param_spec_int ("right_margin",
_("Right Margin"),
_("Width of the right margin in pixels"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_INDENT,
g_param_spec_int ("indent",
_("Indent"),
_("Amount to indent the paragraph, in pixels"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_TABS,
g_param_spec_boxed ("tabs",
_("Tabs"),
_("Custom tabs for this text"),
PANGO_TYPE_TAB_ARRAY,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_CURSOR_VISIBLE,
g_param_spec_boolean ("cursor_visible",
_("Cursor Visible"),
_("If the insertion cursor is shown"),
TRUE,
G_PARAM_READWRITE));
/*
* Style properties
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_boxed ("cursor_color",
_("Cursor color"),
_("Color with which to draw insertion cursor"),
GDK_TYPE_COLOR,
G_PARAM_READABLE));
/*
* Signals
*/
signals[MOVE_CURSOR] =
gtk_signal_new ("move_cursor",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, move_cursor),
gtk_marshal_VOID__ENUM_INT_BOOLEAN,
GTK_TYPE_NONE, 3, GTK_TYPE_MOVEMENT_STEP, GTK_TYPE_INT, GTK_TYPE_BOOL);
signals[SET_ANCHOR] =
gtk_signal_new ("set_anchor",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, set_anchor),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
signals[INSERT_AT_CURSOR] =
gtk_signal_new ("insert_at_cursor",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, insert_at_cursor),
gtk_marshal_VOID__STRING,
GTK_TYPE_NONE, 1, GTK_TYPE_STRING);
signals[DELETE_FROM_CURSOR] =
gtk_signal_new ("delete_from_cursor",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, delete_from_cursor),
gtk_marshal_VOID__ENUM_INT,
GTK_TYPE_NONE, 2, GTK_TYPE_DELETE_TYPE, GTK_TYPE_INT);
signals[CUT_CLIPBOARD] =
gtk_signal_new ("cut_clipboard",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, cut_clipboard),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
signals[COPY_CLIPBOARD] =
gtk_signal_new ("copy_clipboard",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, copy_clipboard),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
signals[PASTE_CLIPBOARD] =
gtk_signal_new ("paste_clipboard",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, paste_clipboard),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
signals[TOGGLE_OVERWRITE] =
gtk_signal_new ("toggle_overwrite",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, toggle_overwrite),
gtk_marshal_VOID__VOID,
GTK_TYPE_NONE, 0);
signals[SET_SCROLL_ADJUSTMENTS] =
gtk_signal_new ("set_scroll_adjustments",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, set_scroll_adjustments),
gtk_marshal_VOID__OBJECT_OBJECT,
GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
widget_class->set_scroll_adjustments_signal = signals[SET_SCROLL_ADJUSTMENTS];
signals[POPULATE_POPUP] =
gtk_signal_new ("populate_popup",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, populate_popup),
gtk_marshal_VOID__OBJECT,
GTK_TYPE_NONE, 1, GTK_TYPE_MENU);
/*
* Key bindings
*/
binding_set = gtk_binding_set_by_class (klass);
/* Moving the insertion point */
add_move_binding (binding_set, GDK_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
add_move_binding (binding_set, GDK_KP_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
add_move_binding (binding_set, GDK_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
add_move_binding (binding_set, GDK_KP_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
add_move_binding (binding_set, GDK_f, GDK_CONTROL_MASK,
GTK_MOVEMENT_LOGICAL_POSITIONS, 1);
add_move_binding (binding_set, GDK_b, GDK_CONTROL_MASK,
GTK_MOVEMENT_LOGICAL_POSITIONS, -1);
add_move_binding (binding_set, GDK_Right, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, 1);
add_move_binding (binding_set, GDK_KP_Right, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, 1);
add_move_binding (binding_set, GDK_Left, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, -1);
add_move_binding (binding_set, GDK_KP_Left, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, 1);
/* Eventually we want to move by display lines, not paragraphs */
add_move_binding (binding_set, GDK_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
add_move_binding (binding_set, GDK_KP_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
add_move_binding (binding_set, GDK_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
add_move_binding (binding_set, GDK_KP_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK,
GTK_MOVEMENT_DISPLAY_LINES, -1);
add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK,
GTK_MOVEMENT_DISPLAY_LINES, 1);
add_move_binding (binding_set, GDK_Up, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, -1);
add_move_binding (binding_set, GDK_KP_Up, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, -1);
add_move_binding (binding_set, GDK_Down, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, 1);
add_move_binding (binding_set, GDK_KP_Down, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPHS, 1);
add_move_binding (binding_set, GDK_a, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPH_ENDS, -1);
add_move_binding (binding_set, GDK_e, GDK_CONTROL_MASK,
GTK_MOVEMENT_PARAGRAPH_ENDS, 1);
add_move_binding (binding_set, GDK_f, GDK_MOD1_MASK,
GTK_MOVEMENT_WORDS, 1);
add_move_binding (binding_set, GDK_b, GDK_MOD1_MASK,
GTK_MOVEMENT_WORDS, -1);
add_move_binding (binding_set, GDK_Home, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
add_move_binding (binding_set, GDK_KP_Home, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
add_move_binding (binding_set, GDK_End, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
add_move_binding (binding_set, GDK_KP_End, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
add_move_binding (binding_set, GDK_Home, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, -1);
add_move_binding (binding_set, GDK_KP_Home, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, -1);
add_move_binding (binding_set, GDK_End, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, 1);
add_move_binding (binding_set, GDK_KP_End, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, 1);
add_move_binding (binding_set, GDK_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
add_move_binding (binding_set, GDK_KP_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
add_move_binding (binding_set, GDK_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
add_move_binding (binding_set, GDK_KP_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
/* Setting the cut/paste/copy anchor */
gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK,
"set_anchor", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_CONTROL_MASK,
"set_anchor", 0);
/* Deleting text */
gtk_binding_entry_add_signal (binding_set, GDK_Delete, 0,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_CHARS,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KP_Delete, 0,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_CHARS,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_d, GDK_CONTROL_MASK,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_CHARS,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_CHARS,
GTK_TYPE_INT, -1);
gtk_binding_entry_add_signal (binding_set, GDK_Delete, GDK_CONTROL_MASK,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KP_Delete, GDK_CONTROL_MASK,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_d, GDK_MOD1_MASK,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, GDK_CONTROL_MASK,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_WORD_ENDS,
GTK_TYPE_INT, -1);
gtk_binding_entry_add_signal (binding_set, GDK_k, GDK_CONTROL_MASK,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_PARAGRAPH_ENDS,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_u, GDK_CONTROL_MASK,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_PARAGRAPHS,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_MOD1_MASK,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_WHITESPACE,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_MOD1_MASK,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_WHITESPACE,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_MOD1_MASK,
"insert_at_cursor", 1,
GTK_TYPE_STRING, " ");
gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_MOD1_MASK,
"insert_at_cursor", 1,
GTK_TYPE_STRING, " ");
gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_MOD1_MASK,
"delete_from_cursor", 2,
GTK_TYPE_ENUM, GTK_DELETE_WHITESPACE,
GTK_TYPE_INT, 1);
/* Cut/copy/paste */
gtk_binding_entry_add_signal (binding_set, GDK_x, GDK_CONTROL_MASK,
"cut_clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_w, GDK_CONTROL_MASK,
"cut_clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_c, GDK_CONTROL_MASK,
"copy_clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_v, GDK_CONTROL_MASK,
"paste_clipboard", 0);
gtk_binding_entry_add_signal (binding_set, GDK_y, GDK_CONTROL_MASK,
"paste_clipboard", 0);
/* Overwrite */
gtk_binding_entry_add_signal (binding_set, GDK_Insert, 0,
"toggle_overwrite", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KP_Insert, 0,
"toggle_overwrite", 0);
}
static void
gtk_text_view_init (GtkTextView *text_view)
{
GtkWidget *widget;
widget = GTK_WIDGET (text_view);
GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS);
/* Set up default style */
text_view->wrap_mode = GTK_WRAP_NONE;
text_view->pixels_above_lines = 0;
text_view->pixels_below_lines = 0;
text_view->pixels_inside_wrap = 0;
text_view->justify = GTK_JUSTIFY_LEFT;
text_view->left_margin = 0;
text_view->right_margin = 0;
text_view->indent = 0;
text_view->tabs = NULL;
text_view->editable = TRUE;
gtk_drag_dest_set (widget,
0,
target_table, G_N_ELEMENTS (target_table),
GDK_ACTION_COPY | GDK_ACTION_MOVE);
text_view->virtual_cursor_x = -1;
text_view->virtual_cursor_y = -1;
/* This object is completely private. No external entity can gain a reference
* to it; so we create it here and destroy it in finalize ().
*/
text_view->im_context = gtk_im_multicontext_new ();
g_signal_connect (G_OBJECT (text_view->im_context), "commit",
G_CALLBACK (gtk_text_view_commit_handler), text_view);
g_signal_connect (G_OBJECT (text_view->im_context), "preedit_changed",
G_CALLBACK (gtk_text_view_preedit_changed_handler), text_view);
text_view->cursor_visible = TRUE;
text_view->text_window = text_window_new (GTK_TEXT_WINDOW_TEXT,
widget, 200, 200);
text_view->drag_start_x = -1;
text_view->drag_start_y = -1;
text_view->pending_place_cursor_button = 0;
}
/**
* gtk_text_view_new:
*
* Creates a new #GtkTextView. If you don't call gtk_text_view_set_buffer()
* before using the text view, an empty default buffer will be created
* for you. Get the buffer with gtk_text_view_get_buffer(). If you want
* to specify your own buffer, consider gtk_text_view_new_with_buffer().
*
* Return value: a new #GtkTextView
**/
GtkWidget*
gtk_text_view_new (void)
{
return GTK_WIDGET (gtk_type_new (gtk_text_view_get_type ()));
}
/**
* gtk_text_view_new_with_buffer:
* @buffer: a #GtkTextBuffer
*
* Creates a new #GtkTextView widget displaying the buffer
* @buffer. One buffer can be shared among many widgets.
* @buffer may be NULL to create a default buffer, in which case
* this function is equivalent to gtk_text_view_new(). The
* text view adds its own reference count to the buffer; it does not
* take over an existing reference.
*
* Return value: a new #GtkTextView.
**/
GtkWidget*
gtk_text_view_new_with_buffer (GtkTextBuffer *buffer)
{
GtkTextView *text_view;
text_view = (GtkTextView*)gtk_text_view_new ();
gtk_text_view_set_buffer (text_view, buffer);
return GTK_WIDGET (text_view);
}
/**
* gtk_text_view_set_buffer:
* @text_view: a #GtkTextView
* @buffer: a #GtkTextBuffer
*
* Sets @buffer as the buffer being displayed by @text_view. The previous
* buffer displayed by the text view is unreferenced, and a reference is
* added to @buffer. If you owned a reference to @buffer before passing it
* to this function, you must remove that reference yourself; #GtkTextView
* will not "adopt" it.
*
**/
void
gtk_text_view_set_buffer (GtkTextView *text_view,
GtkTextBuffer *buffer)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (buffer == NULL || GTK_IS_TEXT_BUFFER (buffer));
if (text_view->buffer == buffer)
return;
if (text_view->buffer != NULL)
{
/* Destroy all anchored children */
GSList *tmp_list;
GSList *copy;
copy = g_slist_copy (text_view->children);
tmp_list = copy;
while (tmp_list != NULL)
{
GtkTextViewChild *vc = tmp_list->data;
if (vc->anchor)
{
gtk_widget_destroy (vc->widget);
/* vc may now be invalid! */
}
tmp_list = g_slist_next (tmp_list);
}
g_slist_free (copy);
g_signal_handlers_disconnect_by_func (G_OBJECT (text_view->buffer),
gtk_text_view_mark_set_handler, text_view);
g_object_unref (G_OBJECT (text_view->buffer));
text_view->dnd_mark = NULL;
if (GTK_WIDGET_REALIZED (text_view))
gtk_text_buffer_remove_selection_clipboard (text_view->buffer,
gtk_clipboard_get (GDK_SELECTION_PRIMARY));
}
text_view->buffer = buffer;
if (buffer != NULL)
{
GtkTextIter start;
g_object_ref (G_OBJECT (buffer));
if (text_view->layout)
gtk_text_layout_set_buffer (text_view->layout, buffer);
gtk_text_buffer_get_iter_at_offset (text_view->buffer, &start, 0);
text_view->dnd_mark = gtk_text_buffer_create_mark (text_view->buffer,
"gtk_drag_target",
&start, FALSE);
text_view->first_para_mark = gtk_text_buffer_create_mark (text_view->buffer,
NULL,
&start, TRUE);
text_view->first_para_pixels = 0;
g_signal_connect (G_OBJECT (text_view->buffer), "mark_set",
G_CALLBACK (gtk_text_view_mark_set_handler), text_view);
if (GTK_WIDGET_REALIZED (text_view))
gtk_text_buffer_add_selection_clipboard (text_view->buffer,
gtk_clipboard_get (GDK_SELECTION_PRIMARY));
}
if (GTK_WIDGET_VISIBLE (text_view))
gtk_widget_queue_draw (GTK_WIDGET (text_view));
gtk_text_view_invalidate (text_view);
}
static GtkTextBuffer*
get_buffer (GtkTextView *text_view)
{
if (text_view->buffer == NULL)
{
GtkTextBuffer *b;
b = gtk_text_buffer_new (NULL);
gtk_text_view_set_buffer (text_view, b);
g_object_unref (G_OBJECT (b));
}
return text_view->buffer;
}
/**
* gtk_text_view_get_buffer:
* @text_view: a #GtkTextView
*
* Returns the #GtkTextBuffer being displayed by this text view.
* The reference count on the buffer is not incremented; the caller
* of this function won't own a new reference.
*
* Return value: a #GtkTextBuffer
**/
GtkTextBuffer*
gtk_text_view_get_buffer (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
return get_buffer (text_view);
}
/**
* gtk_text_view_get_iter_at_location:
* @text_view: a #GtkTextView
* @iter: a #GtkTextIter
* @x: x position, in buffer coordinates
* @y: y position, in buffer coordinates
*
* Retrieves the iterator at buffer coordinates @x and @y. Buffer
* coordinates are coordinates for the entire buffer, not just the
* currently-displayed portion. If you have coordinates from an
* event, you have to convert those to buffer coordinates with
* gtk_text_view_window_to_buffer_coords().
*
**/
void
gtk_text_view_get_iter_at_location (GtkTextView *text_view,
GtkTextIter *iter,
gint x,
gint y)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (iter != NULL);
g_return_if_fail (text_view->layout != NULL);
gtk_text_layout_get_iter_at_pixel (text_view->layout,
iter,
x,
y);
}
/**
* gtk_text_view_get_iter_location:
* @text_view: a #GtkTextView
* @iter: a #GtkTextIter
* @location: bounds of the character at @iter
*
* Gets a rectangle which roughly contains the character at @iter.
* The rectangle position is in buffer coordinates; use
* gtk_text_view_buffer_to_window_coords() to convert these
* coordinates to coordinates for one of the windows in the text view.
*
**/
void
gtk_text_view_get_iter_location (GtkTextView *text_view,
const GtkTextIter *iter,
GdkRectangle *location)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (gtk_text_iter_get_buffer (iter) == get_buffer (text_view));
gtk_text_layout_get_iter_location (text_view->layout, iter, location);
}
/**
* gtk_text_view_get_line_yrange:
* @text_view: a #GtkTextView
* @iter: a #GtkTextIter
* @y: return location for a y coordinate
* @height: return location for a height
*
* Gets the y coordinate of the top of the line containing @iter,
* and the height of the line. The coordinate is a buffer coordinate;
* convert to window coordinates with gtk_text_view_buffer_to_window_coords().
*
**/
void
gtk_text_view_get_line_yrange (GtkTextView *text_view,
const GtkTextIter *iter,
gint *y,
gint *height)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (gtk_text_iter_get_buffer (iter) == get_buffer (text_view));
gtk_text_layout_get_line_yrange (text_view->layout,
iter,
y,
height);
}
/**
* gtk_text_view_get_line_at_y:
* @text_view: a #GtkTextView
* @target_iter: a #GtkTextIter
* @y: a y coordinate
* @line_top: return location for top coordinate of the line
*
* Gets the #GtkTextIter at the start of the line containing
* the coordinate @y. @y is in buffer coordinates, convert from
* window coordinates with gtk_text_view_window_to_buffer_coords().
* If non-%NULL, @line_top will be filled with the coordinate of the top
* edge of the line.
**/
void
gtk_text_view_get_line_at_y (GtkTextView *text_view,
GtkTextIter *target_iter,
gint y,
gint *line_top)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
gtk_text_layout_get_line_at_y (text_view->layout,
target_iter,
y,
line_top);
}
static gboolean
set_adjustment_clamped (GtkAdjustment *adj, gdouble val)
{
DV (g_print (" Setting adj to raw value %g\n", val));
/* We don't really want to clamp to upper; we want to clamp to
upper - page_size which is the highest value the scrollbar
will let us reach. */
if (val > (adj->upper - adj->page_size))
val = adj->upper - adj->page_size;
if (val < adj->lower)
val = adj->lower;
if (val != adj->value)
{
DV (g_print (" Setting adj to clamped value %g\n", val));
gtk_adjustment_set_value (adj, val);
return TRUE;
}
else
return FALSE;
}
/**
* gtk_text_view_scroll_to_iter:
* @text_view: a #GtkTextView
* @iter: a #GtkTextIter
* @within_margin: margin as a [0.0,0.5) fraction of screen size
* @use_align: whether to use alignment arguments (if %FALSE, just get the mark onscreen)
* @xalign: horizontal alignment of mark within visible area.
* @yalign: vertical alignment of mark within visible area
*
* Scrolls @text_view so that @iter is on the screen in the position
* indicated by @xalign and @yalign. An alignment of 0.0 indicates
* left or top, 1.0 indicates right or bottom, 0.5 means center. If @use_align
* is %FALSE, the text scrolls the minimal distance to get the mark onscreen,
* possibly not scrolling at all. The effective screen for purposes
* of this function is reduced by a margin of size @within_margin.
* NOTE: This function uses the currently-computed height of the
* lines in the text buffer. Note that line heights are computed
* in an idle handler; so this function may not have the desired effect
* if it's called before the height computations. To avoid oddness,
* consider using gtk_text_view_scroll_to_mark() which saves a point
* to be scrolled to after line validation.
*
* Return value: %TRUE if scrolling occurred
**/
gboolean
gtk_text_view_scroll_to_iter (GtkTextView *text_view,
GtkTextIter *iter,
gdouble within_margin,
gboolean use_align,
gdouble xalign,
gdouble yalign)
{
GdkRectangle rect;
GdkRectangle screen;
gint screen_bottom;
gint screen_right;
gint scroll_dest;
GtkWidget *widget;
gboolean retval = FALSE;
gint scroll_inc;
gint screen_xoffset, screen_yoffset;
gint current_x_scroll, current_y_scroll;
/* FIXME why don't we do the validate-at-scroll-destination thing
* from flush_scroll in this function? I think it wasn't done before
* because changed_handler was screwed up, but I could be wrong.
*/
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
g_return_val_if_fail (within_margin >= 0.0 && within_margin < 0.5, FALSE);
g_return_val_if_fail (xalign >= 0.0 && xalign <= 1.0, FALSE);
g_return_val_if_fail (yalign >= 0.0 && yalign <= 1.0, FALSE);
widget = GTK_WIDGET (text_view);
DV(g_print(G_STRLOC"\n"));
gtk_text_layout_get_iter_location (text_view->layout,
iter,
&rect);
DV (g_print (" target rect %d,%d %d x %d\n", rect.x, rect.y, rect.width, rect.height));
current_x_scroll = text_view->xoffset;
current_y_scroll = text_view->yoffset;
screen.x = current_x_scroll;
screen.y = current_y_scroll;
screen.width = SCREEN_WIDTH (widget);
screen.height = SCREEN_HEIGHT (widget);
screen_xoffset = screen.width * within_margin;
screen_yoffset = screen.height * within_margin;
screen.x += screen_xoffset;
screen.y += screen_yoffset;
screen.width -= screen_xoffset * 2;
screen.height -= screen_yoffset * 2;
/* paranoia check */
if (screen.width < 1)
screen.width = 1;
if (screen.height < 1)
screen.height = 1;
screen_right = screen.x + screen.width;
screen_bottom = screen.y + screen.height;
/* The alignment affects the point in the target character that we
* choose to align. If we're doing right/bottom alignment, we align
* the right/bottom edge of the character the mark is at; if we're
* doing left/top we align the left/top edge of the character; if
* we're doing center alignment we align the center of the
* character.
*/
/* Vertical scroll */
scroll_inc = 0;
scroll_dest = current_y_scroll;
if (use_align)
{
scroll_dest = rect.y + (rect.height * yalign) - (screen.height * yalign);
/* if scroll_dest < screen.y, we move a negative increment (up),
* else a positive increment (down)
*/
scroll_inc = scroll_dest - screen.y + screen_yoffset;
}
else
{
/* move minimum to get onscreen */
if (rect.y < screen.y)
{
scroll_dest = rect.y;
scroll_inc = scroll_dest - screen.y - screen_yoffset;
}
else if ((rect.y + rect.height) > screen_bottom)
{
scroll_dest = rect.y + rect.height;
scroll_inc = scroll_dest - screen_bottom + screen_yoffset;
}
}
if (scroll_inc != 0)
{
retval = set_adjustment_clamped (get_vadjustment (text_view),
current_y_scroll + scroll_inc);
DV (g_print (" vert increment %d\n", scroll_inc));
}
/* Horizontal scroll */
scroll_inc = 0;
scroll_dest = current_x_scroll;
if (use_align)
{
scroll_dest = rect.x + (rect.width * xalign) - (screen.width * xalign);
/* if scroll_dest < screen.y, we move a negative increment (left),
* else a positive increment (right)
*/
scroll_inc = scroll_dest - screen.x + screen_xoffset;
}
else
{
/* move minimum to get onscreen */
if (rect.x < screen.x)
{
scroll_dest = rect.x;
scroll_inc = scroll_dest - screen.x - screen_xoffset;
}
else if ((rect.x + rect.width) > screen_right)
{
scroll_dest = rect.x + rect.width;
scroll_inc = scroll_dest - screen_right + screen_xoffset;
}
}
if (scroll_inc != 0)
{
retval = set_adjustment_clamped (get_hadjustment (text_view),
current_x_scroll + scroll_inc);
DV (g_print (" horiz increment %d\n", scroll_inc));
}
if (retval)
DV(g_print (">Actually scrolled ("G_STRLOC")\n"));
else
DV(g_print (">Didn't end up scrolling ("G_STRLOC")\n"));
return retval;
}
static void
free_pending_scroll (GtkTextPendingScroll *scroll)
{
if (!gtk_text_mark_get_deleted (scroll->mark))
gtk_text_buffer_delete_mark (gtk_text_mark_get_buffer (scroll->mark),
scroll->mark);
g_object_unref (G_OBJECT (scroll->mark));
g_free (scroll);
}
static void
gtk_text_view_queue_scroll (GtkTextView *text_view,
GtkTextMark *mark,
gdouble within_margin,
gboolean use_align,
gdouble xalign,
gdouble yalign)
{
GtkTextIter iter;
GtkTextPendingScroll *scroll;
DV(g_print(G_STRLOC"\n"));
scroll = g_new (GtkTextPendingScroll, 1);
scroll->within_margin = within_margin;
scroll->use_align = use_align;
scroll->xalign = xalign;
scroll->yalign = yalign;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, mark);
scroll->mark = gtk_text_buffer_create_mark (get_buffer (text_view),
NULL,
&iter,
gtk_text_mark_get_left_gravity (mark));
g_object_ref (G_OBJECT (scroll->mark));
if (text_view->pending_scroll)
free_pending_scroll (text_view->pending_scroll);
text_view->pending_scroll = scroll;
}
static gboolean
gtk_text_view_flush_scroll (GtkTextView *text_view)
{
GtkTextIter iter;
GtkTextPendingScroll *scroll;
gboolean retval;
DV(g_print(G_STRLOC"\n"));
if (text_view->pending_scroll == NULL)
return FALSE;
scroll = text_view->pending_scroll;
/* avoid recursion */
text_view->pending_scroll = NULL;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, scroll->mark);
/* Validate arbitrary area around the scroll destination, so the adjustment
* can meaningfully point into that area
*/
DV(g_print (">Validating scroll destination ("G_STRLOC")\n"));
gtk_text_layout_validate_yrange (text_view->layout, &iter, -300, 300);
DV(g_print (">Done validating scroll destination ("G_STRLOC")\n"));
/* Ensure we have updated width/height */
gtk_text_view_update_adjustments (text_view);
retval = gtk_text_view_scroll_to_iter (text_view,
&iter,
scroll->within_margin,
scroll->use_align,
scroll->xalign,
scroll->yalign);
free_pending_scroll (scroll);
return retval;
}
static void
gtk_text_view_set_adjustment_upper (GtkAdjustment *adj, gdouble upper)
{
if (upper != adj->upper)
{
gdouble min = MAX (0.0, upper - adj->page_size);
gboolean value_changed = FALSE;
adj->upper = upper;
if (adj->value > min)
{
adj->value = min;
value_changed = TRUE;
}
gtk_signal_emit_by_name (GTK_OBJECT (adj), "changed");
DV(g_print(">Changed adj upper to %g ("G_STRLOC")\n", upper));
if (value_changed)
{
DV(g_print(">Changed adj value because upper decreased ("G_STRLOC")\n"));
gtk_signal_emit_by_name (GTK_OBJECT (adj), "value_changed");
}
}
}
static void
gtk_text_view_update_adjustments (GtkTextView *text_view)
{
gint width = 0, height = 0;
DV(g_print(">Updating adjustments ("G_STRLOC")\n"));
if (text_view->layout)
gtk_text_layout_get_size (text_view->layout, &width, &height);
if (text_view->width != width || text_view->height != height)
{
text_view->width = width;
text_view->height = height;
gtk_text_view_set_adjustment_upper (get_hadjustment (text_view),
MAX (SCREEN_WIDTH (text_view), width));
gtk_text_view_set_adjustment_upper (get_vadjustment (text_view),
MAX (SCREEN_HEIGHT (text_view), height));
/* hadj/vadj exist since we called get_hadjustment/get_vadjustment above */
/* Set up the step sizes; we'll say that a page is
our allocation minus one step, and a step is
1/10 of our allocation. */
text_view->hadjustment->step_increment =
SCREEN_WIDTH (text_view) / 10.0;
text_view->hadjustment->page_increment =
SCREEN_WIDTH (text_view) * 0.9;
text_view->vadjustment->step_increment =
SCREEN_HEIGHT (text_view) / 10.0;
text_view->vadjustment->page_increment =
SCREEN_HEIGHT (text_view) * 0.9;
gtk_signal_emit_by_name (GTK_OBJECT (get_hadjustment (text_view)), "changed");
gtk_signal_emit_by_name (GTK_OBJECT (get_hadjustment (text_view)), "changed");
}
}
static void
gtk_text_view_update_layout_width (GtkTextView *text_view)
{
DV(g_print(">Updating layout width ("G_STRLOC")\n"));
gtk_text_view_ensure_layout (text_view);
gtk_text_layout_set_screen_width (text_view->layout,
SCREEN_WIDTH (text_view));
}
static void
gtk_text_view_update_im_spot_location (GtkTextView *text_view)
{
GdkRectangle area;
gint cursor_x_pos, cursor_y_pos;
if (text_view->layout == NULL)
return;
gtk_text_view_get_virtual_cursor_pos (text_view, &cursor_x_pos, &cursor_y_pos);
area.x = cursor_x_pos;
area.y = cursor_y_pos;
area.width = area.height = 0;
gtk_im_context_set_cursor_location (text_view->im_context, &area);
}
/**
* gtk_text_view_scroll_to_mark:
* @text_view: a #GtkTextView
* @mark: a #GtkTextMark
* @within_margin: margin as a [0.0,0.5) fraction of screen size
* @use_align: whether to use alignment arguments (if %FALSE, just get the mark onscreen)
* @xalign: horizontal alignment of mark within visible area.
* @yalign: vertical alignment of mark within visible area
*
* Scrolls @text_view so that @mark is on the screen in the position
* indicated by @xalign and @yalign. An alignment of 0.0 indicates
* left or top, 1.0 indicates right or bottom, 0.5 means center. If @use_align
* is %FALSE, the text scrolls the minimal distance to get the mark onscreen,
* possibly not scrolling at all. The effective screen for purposes
* of this function is reduced by a margin of size @within_margin.
*
**/
void
gtk_text_view_scroll_to_mark (GtkTextView *text_view,
GtkTextMark *mark,
gdouble within_margin,
gboolean use_align,
gdouble xalign,
gdouble yalign)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (GTK_IS_TEXT_MARK (mark));
g_return_if_fail (within_margin >= 0.0 && within_margin < 0.5);
g_return_if_fail (xalign >= 0.0 && xalign <= 1.0);
g_return_if_fail (yalign >= 0.0 && yalign <= 1.0);
gtk_text_view_queue_scroll (text_view, mark,
within_margin,
use_align,
xalign,
yalign);
/* If no validation is pending, we need to go ahead and force an
* immediate scroll.
*/
if (text_view->layout &&
gtk_text_layout_is_valid (text_view->layout))
gtk_text_view_flush_scroll (text_view);
}
void
gtk_text_view_scroll_mark_onscreen (GtkTextView *text_view,
GtkTextMark *mark)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (GTK_IS_TEXT_MARK (mark));
gtk_text_view_scroll_to_mark (text_view, mark, 0.0, FALSE, 0.0, 0.0);
}
static gboolean
clamp_iter_onscreen (GtkTextView *text_view, GtkTextIter *iter)
{
GdkRectangle visible_rect;
gtk_text_view_get_visible_rect (text_view, &visible_rect);
return gtk_text_layout_clamp_iter_to_vrange (text_view->layout, iter,
visible_rect.y,
visible_rect.y + visible_rect.height);
}
/**
* gtk_text_view_move_mark_onscreen:
* @text_view: a #GtkTextView
* @mark: a #GtkTextMark
*
* Moves a mark within the buffer so that it's
* located within the currently-visible text area.
*
* Return value: %TRUE if the mark moved (wasn't already onscreen)
**/
gboolean
gtk_text_view_move_mark_onscreen (GtkTextView *text_view,
GtkTextMark *mark)
{
GtkTextIter iter;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (mark != NULL, FALSE);
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, mark);
if (clamp_iter_onscreen (text_view, &iter))
{
gtk_text_buffer_move_mark (get_buffer (text_view), mark, &iter);
return TRUE;
}
else
return FALSE;
}
/**
* gtk_text_view_get_visible_rect:
* @text_view: a #GtkTextView
* @visible_rect: rectangle to fill
*
* Fills @visible_rect with the currently-visible
* region of the buffer, in buffer coordinates. Convert to window coordinates
* with gtk_text_view_buffer_to_window_coords().
**/
void
gtk_text_view_get_visible_rect (GtkTextView *text_view,
GdkRectangle *visible_rect)
{
GtkWidget *widget;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
widget = GTK_WIDGET (text_view);
if (visible_rect)
{
visible_rect->x = text_view->xoffset;
visible_rect->y = text_view->yoffset;
visible_rect->width = SCREEN_WIDTH (widget);
visible_rect->height = SCREEN_HEIGHT (widget);
DV(g_print(" visible rect: %d,%d %d x %d\n",
visible_rect->x,
visible_rect->y,
visible_rect->width,
visible_rect->height));
}
}
/**
* gtk_text_view_set_wrap_mode:
* @text_view: a #GtkTextView
* @wrap_mode: a #GtkWrapMode
*
* Sets the line wrapping for the view.
**/
void
gtk_text_view_set_wrap_mode (GtkTextView *text_view,
GtkWrapMode wrap_mode)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (text_view->wrap_mode != wrap_mode)
{
text_view->wrap_mode = wrap_mode;
if (text_view->layout)
{
text_view->layout->default_style->wrap_mode = wrap_mode;
gtk_text_layout_default_style_changed (text_view->layout);
}
}
g_object_notify (G_OBJECT (text_view), "wrap_mode");
}
/**
* gtk_text_view_get_wrap_mode:
* @text_view: a #GtkTextView
*
* Gets the line wrapping for the view.
*
* Return value: the line wrap setting
**/
GtkWrapMode
gtk_text_view_get_wrap_mode (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), GTK_WRAP_NONE);
return text_view->wrap_mode;
}
/**
* gtk_text_view_set_editable:
* @text_view: a #GtkTextView
* @setting: whether it's editable
*
* Sets the default editability of the #GtkTextView. You can override
* this default setting with tags in the buffer, using the "editable"
* attribute of tags.
**/
void
gtk_text_view_set_editable (GtkTextView *text_view,
gboolean setting)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (text_view->editable != setting)
{
text_view->editable = setting;
if (text_view->layout)
{
text_view->layout->default_style->editable = text_view->editable;
gtk_text_layout_default_style_changed (text_view->layout);
}
}
g_object_notify (G_OBJECT (text_view), "editable");
}
/**
* gtk_text_view_get_editable:
* @text_view: a #GtkTextView
*
* Returns the default editability of the #GtkTextView. Tags in the
* buffer may override this setting for some ranges of text.
*
* Return value: whether text is editable by default
**/
gboolean
gtk_text_view_get_editable (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
return text_view->editable;
}
void
gtk_text_view_set_pixels_above_lines (GtkTextView *text_view,
gint pixels_above_lines)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (text_view->pixels_above_lines != pixels_above_lines)
{
text_view->pixels_above_lines = pixels_above_lines;
if (text_view->layout)
{
text_view->layout->default_style->pixels_above_lines = pixels_above_lines;
gtk_text_layout_default_style_changed (text_view->layout);
}
}
g_object_notify (G_OBJECT (text_view), "pixels_above_lines");
}
gint
gtk_text_view_get_pixels_above_lines (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->pixels_above_lines;
}
void
gtk_text_view_set_pixels_below_lines (GtkTextView *text_view,
gint pixels_below_lines)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (text_view->pixels_below_lines != pixels_below_lines)
{
text_view->pixels_below_lines = pixels_below_lines;
if (text_view->layout)
{
text_view->layout->default_style->pixels_below_lines = pixels_below_lines;
gtk_text_layout_default_style_changed (text_view->layout);
}
}
g_object_notify (G_OBJECT (text_view), "pixels_below_lines");
}
gint
gtk_text_view_get_pixels_below_lines (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->pixels_below_lines;
}
void
gtk_text_view_set_pixels_inside_wrap (GtkTextView *text_view,
gint pixels_inside_wrap)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (text_view->pixels_inside_wrap != pixels_inside_wrap)
{
text_view->pixels_inside_wrap = pixels_inside_wrap;
if (text_view->layout)
{
text_view->layout->default_style->pixels_inside_wrap = pixels_inside_wrap;
gtk_text_layout_default_style_changed (text_view->layout);
}
}
g_object_notify (G_OBJECT (text_view), "pixels_inside_wrap");
}
gint
gtk_text_view_get_pixels_inside_wrap (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->pixels_inside_wrap;
}
void
gtk_text_view_set_justification (GtkTextView *text_view,
GtkJustification justify)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (text_view->justify != justify)
{
text_view->justify = justify;
if (text_view->layout)
{
text_view->layout->default_style->justification = justify;
gtk_text_layout_default_style_changed (text_view->layout);
}
}
g_object_notify (G_OBJECT (text_view), "justification");
}
GtkJustification
gtk_text_view_get_justification (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), GTK_JUSTIFY_LEFT);
return text_view->justify;
}
void
gtk_text_view_set_left_margin (GtkTextView *text_view,
gint left_margin)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (text_view->left_margin != left_margin)
{
text_view->left_margin = left_margin;
if (text_view->layout)
{
text_view->layout->default_style->left_margin = left_margin;
gtk_text_layout_default_style_changed (text_view->layout);
}
}
g_object_notify (G_OBJECT (text_view), "left_margin");
}
gint
gtk_text_view_get_left_margin (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->left_margin;
}
void
gtk_text_view_set_right_margin (GtkTextView *text_view,
gint right_margin)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (text_view->right_margin != right_margin)
{
text_view->right_margin = right_margin;
if (text_view->layout)
{
text_view->layout->default_style->right_margin = right_margin;
gtk_text_layout_default_style_changed (text_view->layout);
}
}
g_object_notify (G_OBJECT (text_view), "right_margin");
}
gint
gtk_text_view_get_right_margin (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->right_margin;
}
void
gtk_text_view_set_indent (GtkTextView *text_view,
gint indent)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (text_view->indent != indent)
{
text_view->indent = indent;
if (text_view->layout)
{
text_view->layout->default_style->indent = indent;
gtk_text_layout_default_style_changed (text_view->layout);
}
}
g_object_notify (G_OBJECT (text_view), "indent");
}
gint
gtk_text_view_get_indent (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
return text_view->indent;
}
void
gtk_text_view_set_tabs (GtkTextView *text_view,
PangoTabArray *tabs)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (text_view->tabs)
pango_tab_array_free (text_view->tabs);
text_view->tabs = tabs ? pango_tab_array_copy (tabs) : NULL;
if (text_view->layout)
{
/* some unkosher futzing in internal struct details... */
if (text_view->layout->default_style->tabs)
pango_tab_array_free (text_view->layout->default_style->tabs);
text_view->layout->default_style->tabs =
text_view->tabs ? pango_tab_array_copy (text_view->tabs) : NULL;
gtk_text_layout_default_style_changed (text_view->layout);
}
g_object_notify (G_OBJECT (text_view), "tabs");
}
PangoTabArray*
gtk_text_view_get_tabs (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
return text_view->tabs ? pango_tab_array_copy (text_view->tabs) : NULL;
}
/**
* gtk_text_view_set_cursor_visible:
* @text_view: a #GtkTextView
* @setting: whether to show the insertion cursor
*
* Toggles whether the insertion point is displayed. A buffer with no editable
* text probably shouldn't have a visible cursor, so you may want to turn
* the cursor off.
**/
void
gtk_text_view_set_cursor_visible (GtkTextView *text_view,
gboolean setting)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
setting = (setting != FALSE);
if (text_view->cursor_visible != setting)
{
text_view->cursor_visible = setting;
if (GTK_WIDGET_HAS_FOCUS (text_view))
{
if (text_view->layout)
{
gtk_text_layout_set_cursor_visible (text_view->layout, setting);
gtk_text_view_check_cursor_blink (text_view);
}
}
}
g_object_notify (G_OBJECT (text_view), "cursor_visible");
}
/**
* gtk_text_view_get_cursor_visible:
* @text_view: a #GtkTextView
*
* Find out whether the cursor is being displayed.
*
* Return value: whether the insertion mark is visible
**/
gboolean
gtk_text_view_get_cursor_visible (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
return text_view->cursor_visible;
}
/**
* gtk_text_view_place_cursor_onscreen:
* @text_view: a #GtkTextView
*
* Moves the cursor to the currently visible region of the
* buffer, it it isn't there already.
*
* Return value: TRUE if the cursor had to be moved.
**/
gboolean
gtk_text_view_place_cursor_onscreen (GtkTextView *text_view)
{
GtkTextIter insert;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
if (clamp_iter_onscreen (text_view, &insert))
{
gtk_text_buffer_place_cursor (get_buffer (text_view), &insert);
return TRUE;
}
else
return FALSE;
}
static void
gtk_text_view_destroy (GtkObject *object)
{
GtkTextView *text_view;
GtkTextLayout *layout;
text_view = GTK_TEXT_VIEW (object);
layout = text_view->layout;
gtk_text_view_set_buffer (text_view, NULL);
gtk_text_view_destroy_layout (text_view);
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
gtk_text_view_finalize (GObject *object)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (object);
g_return_if_fail (text_view->buffer == NULL);
gtk_text_view_destroy_layout (text_view);
gtk_text_view_set_buffer (text_view, NULL);
if (text_view->pending_scroll)
{
free_pending_scroll (text_view->pending_scroll);
text_view->pending_scroll = NULL;
}
if (text_view->hadjustment)
g_object_unref (G_OBJECT (text_view->hadjustment));
if (text_view->vadjustment)
g_object_unref (G_OBJECT (text_view->vadjustment));
text_window_free (text_view->text_window);
if (text_view->left_window)
text_window_free (text_view->left_window);
if (text_view->top_window)
text_window_free (text_view->top_window);
if (text_view->right_window)
text_window_free (text_view->right_window);
if (text_view->bottom_window)
text_window_free (text_view->bottom_window);
g_object_unref (G_OBJECT (text_view->im_context));
(* G_OBJECT_CLASS (parent_class)->finalize) (object);
}
static void
gtk_text_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (object);
switch (prop_id)
{
case PROP_PIXELS_ABOVE_LINES:
gtk_text_view_set_pixels_above_lines (text_view, g_value_get_int (value));
break;
case PROP_PIXELS_BELOW_LINES:
gtk_text_view_set_pixels_below_lines (text_view, g_value_get_int (value));
break;
case PROP_PIXELS_INSIDE_WRAP:
gtk_text_view_set_pixels_inside_wrap (text_view, g_value_get_int (value));
break;
case PROP_EDITABLE:
gtk_text_view_set_editable (text_view, g_value_get_boolean (value));
break;
case PROP_WRAP_MODE:
gtk_text_view_set_wrap_mode (text_view, g_value_get_enum (value));
break;
case PROP_JUSTIFICATION:
gtk_text_view_set_justification (text_view, g_value_get_enum (value));
break;
case PROP_LEFT_MARGIN:
gtk_text_view_set_left_margin (text_view, g_value_get_int (value));
break;
case PROP_RIGHT_MARGIN:
gtk_text_view_set_right_margin (text_view, g_value_get_int (value));
break;
case PROP_INDENT:
gtk_text_view_set_indent (text_view, g_value_get_int (value));
break;
case PROP_TABS:
gtk_text_view_set_tabs (text_view, g_value_get_object (value));
break;
case PROP_CURSOR_VISIBLE:
gtk_text_view_set_cursor_visible (text_view, g_value_get_boolean (value));
break;
default:
g_assert_not_reached ();
break;
}
}
static void
gtk_text_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (object);
switch (prop_id)
{
case PROP_PIXELS_ABOVE_LINES:
g_value_set_int (value, text_view->pixels_above_lines);
break;
case PROP_PIXELS_BELOW_LINES:
g_value_set_int (value, text_view->pixels_below_lines);
break;
case PROP_PIXELS_INSIDE_WRAP:
g_value_set_int (value, text_view->pixels_inside_wrap);
break;
case PROP_EDITABLE:
g_value_set_boolean (value, text_view->editable);
break;
case PROP_WRAP_MODE:
g_value_set_enum (value, text_view->wrap_mode);
break;
case PROP_JUSTIFICATION:
g_value_set_enum (value, text_view->justify);
break;
case PROP_LEFT_MARGIN:
g_value_set_int (value, text_view->left_margin);
break;
case PROP_RIGHT_MARGIN:
g_value_set_int (value, text_view->right_margin);
break;
case PROP_INDENT:
g_value_set_int (value, text_view->indent);
break;
case PROP_TABS:
g_value_set_object (value, gtk_text_view_get_tabs (text_view));
break;
case PROP_CURSOR_VISIBLE:
g_value_set_boolean (value, text_view->cursor_visible);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_text_view_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkTextView *text_view;
GSList *tmp_list;
gint focus_edge_width;
gboolean interior_focus;
text_view = GTK_TEXT_VIEW (widget);
gtk_widget_style_get (widget, "interior_focus", &interior_focus, NULL);
if (interior_focus)
focus_edge_width = 0;
else
focus_edge_width = 1;
if (text_view->layout)
{
text_view->text_window->requisition.width = text_view->layout->width;
text_view->text_window->requisition.height = text_view->layout->height;
}
else
{
text_view->text_window->requisition.width = 0;
text_view->text_window->requisition.height = 0;
}
requisition->width = text_view->text_window->requisition.width + focus_edge_width * 2;
requisition->height = text_view->text_window->requisition.height + focus_edge_width * 2;
if (text_view->left_window)
requisition->width += text_view->left_window->requisition.width;
if (text_view->right_window)
requisition->width += text_view->right_window->requisition.width;
if (text_view->top_window)
requisition->height += text_view->top_window->requisition.height;
if (text_view->bottom_window)
requisition->height += text_view->bottom_window->requisition.height;
tmp_list = text_view->children;
while (tmp_list != NULL)
{
GtkTextViewChild *child = tmp_list->data;
if (child->anchor)
{
GtkRequisition child_req;
GtkRequisition old_req;
old_req = child->widget->requisition;
gtk_widget_size_request (child->widget, &child_req);
if (text_view->layout &&
(old_req.width != child_req.width ||
old_req.height != child_req.height))
gtk_text_child_anchor_queue_resize (child->anchor,
text_view->layout);
}
else
{
}
tmp_list = g_slist_next (tmp_list);
}
}
static void
gtk_text_view_update_child_allocation (GtkTextView *text_view,
GtkTextViewChild *vc)
{
gint buffer_y;
GtkTextIter iter;
GtkAllocation allocation;
gtk_text_buffer_get_iter_at_child_anchor (get_buffer (text_view),
&iter,
vc->anchor);
gtk_text_layout_get_line_yrange (text_view->layout, &iter,
&buffer_y, NULL);
buffer_y += vc->from_top_of_line;
allocation.x = vc->from_left_of_buffer;
allocation.y = buffer_y;
allocation.width = vc->widget->requisition.width;
allocation.height = vc->widget->requisition.height;
gtk_widget_size_allocate (vc->widget, &allocation);
}
static void
gtk_text_view_child_allocated (GtkTextLayout *layout,
GtkWidget *child,
gint x,
gint y,
gpointer data)
{
GtkTextViewChild *vc = NULL;
GtkTextView *text_view = data;
/* x,y is the position of the child from the top of the line, and
* from the left of the buffer. We have to translate that into text
* window coordinates, then size_allocate the child.
*/
vc = g_object_get_data (G_OBJECT (child),
"gtk-text-view-child");
g_assert (vc != NULL);
g_print ("child allocated at %d,%d\n", x, y);
vc->from_left_of_buffer = x;
vc->from_top_of_line = y;
gtk_text_view_update_child_allocation (text_view, vc);
}
static void
gtk_text_view_validate_children (GtkTextView *text_view)
{
GSList *tmp_list;
DV(g_print(G_STRLOC"\n"));
tmp_list = text_view->children;
while (tmp_list != NULL)
{
GtkTextViewChild *child = tmp_list->data;
if (child->anchor)
{
/* We need to force-validate the regions containing
* children.
*/
GtkTextIter child_loc;
gtk_text_buffer_get_iter_at_child_anchor (get_buffer (text_view),
&child_loc,
child->anchor);
gtk_text_layout_validate_yrange (text_view->layout,
&child_loc,
0, 1);
}
else
{
}
tmp_list = g_slist_next (tmp_list);
}
}
static void
gtk_text_view_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkTextView *text_view;
GtkTextIter first_para;
gint y;
GtkAdjustment *vadj;
gboolean yoffset_changed = FALSE;
gint width, height;
GdkRectangle text_rect;
GdkRectangle left_rect;
GdkRectangle right_rect;
GdkRectangle top_rect;
GdkRectangle bottom_rect;
gint focus_edge_width;
gboolean interior_focus;
text_view = GTK_TEXT_VIEW (widget);
DV(g_print(G_STRLOC"\n"));
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
}
/* distribute width/height among child windows. Ensure all
* windows get at least a 1x1 allocation.
*/
gtk_widget_style_get (widget, "interior_focus", &interior_focus, NULL);
if (interior_focus)
focus_edge_width = 0;
else
focus_edge_width = 1;
width = allocation->width - focus_edge_width * 2;
if (text_view->left_window)
left_rect.width = text_view->left_window->requisition.width;
else
left_rect.width = 1;
width -= left_rect.width;
if (text_view->right_window)
right_rect.width = text_view->right_window->requisition.width;
else
right_rect.width = 1;
width -= right_rect.width;
text_rect.width = MAX (1, width);
top_rect.width = text_rect.width;
bottom_rect.width = text_rect.width;
height = allocation->height - focus_edge_width * 2;
if (text_view->top_window)
top_rect.height = text_view->top_window->requisition.height;
else
top_rect.height = 1;
height -= top_rect.height;
if (text_view->bottom_window)
bottom_rect.height = text_view->bottom_window->requisition.height;
else
bottom_rect.height = 1;
height -= bottom_rect.height;
text_rect.height = MAX (1, height);
left_rect.height = text_rect.height;
right_rect.height = text_rect.height;
/* Origins */
left_rect.x = focus_edge_width;
top_rect.y = focus_edge_width;
text_rect.x = left_rect.x + left_rect.width;
text_rect.y = top_rect.y + top_rect.height;
left_rect.y = text_rect.y;
right_rect.y = text_rect.y;
top_rect.x = text_rect.x;
bottom_rect.x = text_rect.x;
right_rect.x = text_rect.x + text_rect.width;
bottom_rect.y = text_rect.y + text_rect.height;
text_window_size_allocate (text_view->text_window,
&text_rect);
if (text_view->left_window)
text_window_size_allocate (text_view->left_window,
&left_rect);
if (text_view->right_window)
text_window_size_allocate (text_view->right_window,
&right_rect);
if (text_view->top_window)
text_window_size_allocate (text_view->top_window,
&top_rect);
if (text_view->bottom_window)
text_window_size_allocate (text_view->bottom_window,
&bottom_rect);
gtk_text_view_update_layout_width (text_view);
/* This is because validating children ends up size allocating them. */
gtk_text_view_validate_children (text_view);
/* Now adjust the value of the adjustment to keep the cursor at the
* same place in the buffer
*/
gtk_text_view_get_first_para_iter (text_view, &first_para);
gtk_text_layout_get_line_yrange (text_view->layout, &first_para, &y, NULL);
y += text_view->first_para_pixels;
/* Ensure h/v adj exist */
get_hadjustment (text_view);
get_vadjustment (text_view);
vadj = text_view->vadjustment;
if (y > vadj->upper - vadj->page_size)
y = MAX (0, vadj->upper - vadj->page_size);
if (y != text_view->yoffset)
{
vadj->value = text_view->yoffset = y;
yoffset_changed = TRUE;
}
text_view->hadjustment->page_size = SCREEN_WIDTH (text_view);
text_view->hadjustment->page_increment = SCREEN_WIDTH (text_view) / 2;
text_view->hadjustment->lower = 0;
text_view->hadjustment->upper = MAX (SCREEN_WIDTH (text_view),
text_view->width);
gtk_signal_emit_by_name (GTK_OBJECT (text_view->hadjustment), "changed");
text_view->vadjustment->page_size = SCREEN_HEIGHT (text_view);
text_view->vadjustment->page_increment = SCREEN_HEIGHT (text_view) / 2;
text_view->vadjustment->lower = 0;
text_view->vadjustment->upper = MAX (SCREEN_HEIGHT (text_view),
text_view->height);
gtk_signal_emit_by_name (GTK_OBJECT (text_view->vadjustment), "changed");
if (yoffset_changed)
gtk_adjustment_value_changed (vadj);
if (text_view->first_validate_idle != 0)
{
/* The GTK resize loop processes all the pending exposes right
* after doing the resize stuff, so the idle sizer won't have a
* chance to run. So we do the work here.
*/
g_source_remove (text_view->first_validate_idle);
text_view->first_validate_idle = 0;
if (!gtk_text_view_flush_scroll (text_view))
gtk_text_view_validate_onscreen (text_view);
}
}
static void
gtk_text_view_get_first_para_iter (GtkTextView *text_view,
GtkTextIter *iter)
{
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), iter,
text_view->first_para_mark);
}
static void
gtk_text_view_validate_onscreen (GtkTextView *text_view)
{
GtkWidget *widget = GTK_WIDGET (text_view);
DV(g_print(">Validating onscreen ("G_STRLOC")\n"));
if (SCREEN_HEIGHT (widget) > 0)
{
GtkTextIter first_para;
/* Be sure we've validated the stuff onscreen; if we
* scrolled, these calls won't have any effect, because
* they were called in the recursive validate_onscreen
*/
gtk_text_view_get_first_para_iter (text_view, &first_para);
gtk_text_layout_validate_yrange (text_view->layout,
&first_para,
0,
text_view->first_para_pixels +
SCREEN_HEIGHT (widget));
}
text_view->onscreen_validated = TRUE;
DV(g_print(">Done validating onscreen, onscreen_validated = TRUE ("G_STRLOC")\n"));
/* This can have the odd side effect of triggering a scroll, which should
* flip "onscreen_validated" back to FALSE, but should also get us
* back into this function to turn it on again.
*/
gtk_text_view_update_adjustments (text_view);
g_assert (text_view->onscreen_validated);
}
static gboolean
first_validate_callback (gpointer data)
{
GtkTextView *text_view = data;
GDK_THREADS_ENTER ();
/* Note that some of this code is duplicated at the end of size_allocate,
* keep in sync with that.
*/
DV(g_print(G_STRLOC"\n"));
/* Do this first, which means that if an "invalidate"
* occurs during any of this process, a new first_validate_callback
* will be installed, and we'll start again.
*/
text_view->first_validate_idle = 0;
/* be sure we have up-to-date screen size set on the
* layout.
*/
gtk_text_view_update_layout_width (text_view);
/* Bail out if we invalidated stuff; scrolling right away will just
* confuse the issue.
*/
if (text_view->first_validate_idle != 0)
{
DV(g_print(">Width change forced requeue ("G_STRLOC")\n"));
}
else
{
/* scroll to any marks, if that's pending. This can
* jump us to the validation codepath used for scrolling
* onscreen, if so we bail out.
*/
if (!gtk_text_view_flush_scroll (text_view))
gtk_text_view_validate_onscreen (text_view);
DV(g_print(">Leaving first validate idle ("G_STRLOC")\n"));
g_assert (text_view->onscreen_validated);
}
GDK_THREADS_LEAVE ();
return FALSE;
}
static gboolean
incremental_validate_callback (gpointer data)
{
GtkTextView *text_view = data;
gboolean result = TRUE;
GDK_THREADS_ENTER ();
DV(g_print(G_STRLOC"\n"));
gtk_text_layout_validate (text_view->layout, 2000);
gtk_text_view_update_adjustments (text_view);
if (gtk_text_layout_is_valid (text_view->layout))
{
text_view->incremental_validate_idle = 0;
result = FALSE;
}
GDK_THREADS_LEAVE ();
return result;
}
static void
gtk_text_view_invalidate (GtkTextView *text_view)
{
text_view->onscreen_validated = FALSE;
DV(g_print(">Invalidate, onscreen_validated = FALSE ("G_STRLOC")\n"));
if (!text_view->first_validate_idle)
{
text_view->first_validate_idle = g_idle_add_full (GTK_PRIORITY_RESIZE - 2, first_validate_callback, text_view, NULL);
DV (g_print (G_STRLOC": adding first validate idle %d\n",
text_view->first_validate_idle));
}
if (!text_view->incremental_validate_idle)
{
text_view->incremental_validate_idle = g_idle_add_full (GTK_TEXT_VIEW_PRIORITY_VALIDATE, incremental_validate_callback, text_view, NULL);
DV (g_print (G_STRLOC": adding incremental validate idle %d\n",
text_view->incremental_validate_idle));
}
}
static void
invalidated_handler (GtkTextLayout *layout,
gpointer data)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (data);
gtk_text_view_invalidate (text_view);
}
static void
changed_handler (GtkTextLayout *layout,
gint start_y,
gint old_height,
gint new_height,
gpointer data)
{
GtkTextView *text_view;
GtkWidget *widget;
GdkRectangle visible_rect;
GdkRectangle redraw_rect;
text_view = GTK_TEXT_VIEW (data);
widget = GTK_WIDGET (data);
DV(g_print(">Lines Validated ("G_STRLOC")\n"));
if (GTK_WIDGET_REALIZED (text_view))
{
gtk_text_view_get_visible_rect (text_view, &visible_rect);
redraw_rect.x = visible_rect.x;
redraw_rect.width = visible_rect.width;
redraw_rect.y = start_y;
if (old_height == new_height)
redraw_rect.height = old_height;
else
redraw_rect.height = MAX (0, visible_rect.y + visible_rect.height - start_y);
if (gdk_rectangle_intersect (&redraw_rect, &visible_rect, &redraw_rect))
{
/* text_window_invalidate_rect() takes buffer coordinates */
text_window_invalidate_rect (text_view->text_window,
&redraw_rect);
DV(g_print(" invalidated rect: %d,%d %d x %d\n",
redraw_rect.x,
redraw_rect.y,
redraw_rect.width,
redraw_rect.height));
if (text_view->left_window)
text_window_invalidate_rect (text_view->left_window,
&redraw_rect);
if (text_view->right_window)
text_window_invalidate_rect (text_view->right_window,
&redraw_rect);
if (text_view->top_window)
text_window_invalidate_rect (text_view->top_window,
&redraw_rect);
if (text_view->bottom_window)
text_window_invalidate_rect (text_view->bottom_window,
&redraw_rect);
gtk_text_view_update_im_spot_location (text_view);
}
}
if (old_height != new_height)
{
gboolean yoffset_changed = FALSE;
GSList *tmp_list;
int new_first_para_top;
int old_first_para_top;
GtkTextIter first;
/* If the bottom of the old area was above the top of the
* screen, we need to scroll to keep the current top of the
* screen in place. Remember that first_para_pixels is the
* position of the top of the screen in coordinates relative to
* the first paragraph onscreen.
*
* In short we are adding the height delta of the portion of the
* changed region above first_para_mark to text_view->yoffset.
*/
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &first,
text_view->first_para_mark);
gtk_text_layout_get_line_yrange (layout, &first, &new_first_para_top, NULL);
old_first_para_top = text_view->yoffset - text_view->first_para_pixels;
if (new_first_para_top != old_first_para_top)
{
text_view->yoffset += new_first_para_top - old_first_para_top;
get_vadjustment (text_view)->value = text_view->yoffset;
yoffset_changed = TRUE;
}
if (yoffset_changed)
gtk_adjustment_value_changed (get_vadjustment (text_view));
/* FIXME be smarter about which anchored widgets we update */
tmp_list = text_view->children;
while (tmp_list != NULL)
{
GtkTextViewChild *child = tmp_list->data;
if (child->anchor)
gtk_text_view_update_child_allocation (text_view, child);
tmp_list = g_slist_next (tmp_list);
}
}
gtk_widget_queue_resize (widget);
}
static void
gtk_text_view_realize_cursor_gc (GtkTextView *text_view)
{
GdkColor *cursor_color;
GdkColor red = { 0, 0xffff, 0x0000, 0x0000 };
if (text_view->cursor_gc)
gdk_gc_unref (text_view->cursor_gc);
gtk_widget_style_get (GTK_WIDGET (text_view), "cursor_color", &cursor_color, NULL);
if (!cursor_color)
cursor_color = &red;
text_view->cursor_gc = gdk_gc_new (text_view->text_window->bin_window);
gdk_gc_set_rgb_fg_color (text_view->cursor_gc, cursor_color);
}
static void
gtk_text_view_realize (GtkWidget *widget)
{
GtkTextView *text_view;
GdkWindowAttr attributes;
gint attributes_mask;
text_view = GTK_TEXT_VIEW (widget);
GTK_WIDGET_SET_FLAGS (text_view, GTK_REALIZED);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
/* must come before text_window_realize calls */
widget->style = gtk_style_attach (widget->style, widget->window);
gdk_window_set_background (widget->window,
&widget->style->bg[GTK_WIDGET_STATE (widget)]);
text_window_realize (text_view->text_window, widget->window);
if (text_view->left_window)
text_window_realize (text_view->left_window,
widget->window);
if (text_view->top_window)
text_window_realize (text_view->top_window,
widget->window);
if (text_view->right_window)
text_window_realize (text_view->right_window,
widget->window);
if (text_view->bottom_window)
text_window_realize (text_view->bottom_window,
widget->window);
gtk_text_view_realize_cursor_gc (text_view);
gtk_text_view_ensure_layout (text_view);
if (text_view->buffer)
gtk_text_buffer_add_selection_clipboard (text_view->buffer,
gtk_clipboard_get (GDK_SELECTION_PRIMARY));
}
static void
gtk_text_view_unrealize (GtkWidget *widget)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
if (text_view->buffer)
gtk_text_buffer_remove_selection_clipboard (text_view->buffer,
gtk_clipboard_get (GDK_SELECTION_PRIMARY));
if (text_view->cursor_gc)
{
gdk_gc_unref (text_view->cursor_gc);
text_view->cursor_gc = NULL;
}
if (text_view->first_validate_idle)
{
g_source_remove (text_view->first_validate_idle);
text_view->first_validate_idle = 0;
}
if (text_view->incremental_validate_idle)
{
g_source_remove (text_view->incremental_validate_idle);
text_view->incremental_validate_idle = 0;
}
if (text_view->popup_menu)
{
gtk_widget_destroy (text_view->popup_menu);
text_view->popup_menu = NULL;
}
text_window_unrealize (text_view->text_window);
if (text_view->left_window)
text_window_unrealize (text_view->left_window);
if (text_view->top_window)
text_window_unrealize (text_view->top_window);
if (text_view->right_window)
text_window_unrealize (text_view->right_window);
if (text_view->bottom_window)
text_window_unrealize (text_view->bottom_window);
gtk_text_view_destroy_layout (text_view);
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
gtk_text_view_style_set (GtkWidget *widget,
GtkStyle *previous_style)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_set_background (widget->window,
&widget->style->bg[GTK_WIDGET_STATE (widget)]);
gdk_window_set_background (text_view->text_window->bin_window,
&widget->style->base[GTK_WIDGET_STATE (widget)]);
if (text_view->left_window)
gdk_window_set_background (text_view->left_window->bin_window,
&widget->style->bg[GTK_WIDGET_STATE (widget)]);
if (text_view->right_window)
gdk_window_set_background (text_view->right_window->bin_window,
&widget->style->bg[GTK_WIDGET_STATE (widget)]);
if (text_view->top_window)
gdk_window_set_background (text_view->top_window->bin_window,
&widget->style->bg[GTK_WIDGET_STATE (widget)]);
if (text_view->bottom_window)
gdk_window_set_background (text_view->bottom_window->bin_window,
&widget->style->bg[GTK_WIDGET_STATE (widget)]);
gtk_text_view_realize_cursor_gc (text_view);
}
if (text_view->layout && previous_style)
{
gtk_text_view_set_attributes_from_style (text_view,
text_view->layout->default_style,
widget->style);
gtk_text_layout_default_style_changed (text_view->layout);
}
}
static void
gtk_text_view_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
if (text_view->layout)
{
text_view->layout->default_style->direction = gtk_widget_get_direction (widget);
gtk_text_layout_default_style_changed (text_view->layout);
}
}
/*
* Events
*/
static gboolean
get_event_coordinates (GdkEvent *event, gint *x, gint *y)
{
if (event)
switch (event->type)
{
case GDK_MOTION_NOTIFY:
*x = event->motion.x;
*y = event->motion.y;
return TRUE;
break;
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
*x = event->button.x;
*y = event->button.y;
return TRUE;
break;
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
case GDK_PROPERTY_NOTIFY:
case GDK_SELECTION_CLEAR:
case GDK_SELECTION_REQUEST:
case GDK_SELECTION_NOTIFY:
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
case GDK_DRAG_ENTER:
case GDK_DRAG_LEAVE:
case GDK_DRAG_MOTION:
case GDK_DRAG_STATUS:
case GDK_DROP_START:
case GDK_DROP_FINISHED:
default:
return FALSE;
break;
}
return FALSE;
}
static gint
emit_event_on_tags (GtkWidget *widget,
GdkEvent *event,
GtkTextIter *iter)
{
GSList *tags;
GSList *tmp;
gboolean retval = FALSE;
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
tags = gtk_text_iter_get_tags (iter);
tmp = tags;
while (tmp != NULL)
{
GtkTextTag *tag = tmp->data;
if (gtk_text_tag_event (tag, G_OBJECT (widget), event, iter))
{
retval = TRUE;
break;
}
tmp = g_slist_next (tmp);
}
g_slist_free (tags);
return retval;
}
static gint
gtk_text_view_event (GtkWidget *widget, GdkEvent *event)
{
GtkTextView *text_view;
gint x = 0, y = 0;
text_view = GTK_TEXT_VIEW (widget);
if (text_view->layout == NULL ||
get_buffer (text_view) == NULL)
return FALSE;
if (event->any.window != text_view->text_window->bin_window)
return FALSE;
if (get_event_coordinates (event, &x, &y))
{
GtkTextIter iter;
x += text_view->xoffset;
y += text_view->yoffset;
/* FIXME this is slow and we do it twice per event.
* My favorite solution is to have GtkTextLayout cache
* the last couple lookups.
*/
gtk_text_layout_get_iter_at_pixel (text_view->layout,
&iter,
x, y);
return emit_event_on_tags (widget, event, &iter);
}
else if (event->type == GDK_KEY_PRESS ||
event->type == GDK_KEY_RELEASE)
{
GtkTextMark *insert;
GtkTextIter iter;
insert = gtk_text_buffer_get_mark (get_buffer (text_view),
"insert");
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, insert);
return emit_event_on_tags (widget, event, &iter);
}
else
return FALSE;
}
static gint
gtk_text_view_key_press_event (GtkWidget *widget, GdkEventKey *event)
{
gboolean retval = FALSE;
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GtkTextMark *insert;
GtkTextIter iter;
if (text_view->layout == NULL ||
get_buffer (text_view) == NULL)
return FALSE;
insert = gtk_text_buffer_get_insert (get_buffer (text_view));
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, insert);
if (gtk_text_iter_can_insert (&iter, text_view->editable) &&
gtk_im_context_filter_keypress (text_view->im_context, event))
{
text_view->need_im_reset = TRUE;
retval = TRUE;
}
else if (GTK_WIDGET_CLASS (parent_class)->key_press_event &&
GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event))
retval = TRUE;
else if (event->keyval == GDK_Return ||
event->keyval == GDK_KP_Enter)
{
gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), "\n", 1,
text_view->editable);
DV(g_print (G_STRLOC": scrolling to mark\n"));
gtk_text_view_scroll_to_mark (text_view,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"),
0.0, FALSE, 0.0, 0.0);
retval = TRUE;
}
/* Pass through Tab as literal tab, unless Control is held down */
else if ((event->keyval == GDK_Tab ||
event->keyval == GDK_KP_Tab ||
event->keyval == GDK_ISO_Left_Tab) &&
!(event->state & GDK_CONTROL_MASK))
{
gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), "\t", 1,
text_view->editable);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
retval = TRUE;
}
else
retval = FALSE;
gtk_text_view_pend_cursor_blink (text_view);
return retval;
}
static gint
gtk_text_view_key_release_event (GtkWidget *widget, GdkEventKey *event)
{
return FALSE;
}
static gint
gtk_text_view_button_press_event (GtkWidget *widget, GdkEventButton *event)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
text_view->disable_scroll_on_focus = TRUE;
gtk_widget_grab_focus (widget);
text_view->disable_scroll_on_focus = FALSE;
if (event->window != text_view->text_window->bin_window)
{
/* Remove selection if any. */
gtk_text_view_unselect (text_view);
return FALSE;
}
#if 0
/* debug hack */
if (event->button == 3 && (event->state & GDK_CONTROL_MASK) != 0)
_gtk_text_buffer_spew (GTK_TEXT_VIEW (widget)->buffer);
else if (event->button == 3)
gtk_text_layout_spew (GTK_TEXT_VIEW (widget)->layout);
#endif
if (event->type == GDK_BUTTON_PRESS)
{
gtk_text_view_reset_im_context (text_view);
if (event->button == 1)
{
/* If we're in the selection, start a drag copy/move of the
* selection; otherwise, start creating a new selection.
*/
GtkTextIter iter;
GtkTextIter start, end;
gtk_text_layout_get_iter_at_pixel (text_view->layout,
&iter,
event->x + text_view->xoffset,
event->y + text_view->yoffset);
if (gtk_text_buffer_get_selection_bounds (get_buffer (text_view),
&start, &end) &&
gtk_text_iter_in_range (&iter, &start, &end))
{
text_view->drag_start_x = event->x;
text_view->drag_start_y = event->y;
text_view->pending_place_cursor_button = event->button;
}
else
{
gtk_text_view_start_selection_drag (text_view, &iter, event);
}
return TRUE;
}
else if (event->button == 2)
{
GtkTextIter iter;
gtk_text_layout_get_iter_at_pixel (text_view->layout,
&iter,
event->x + text_view->xoffset,
event->y + text_view->yoffset);
gtk_text_buffer_paste_clipboard (get_buffer (text_view),
gtk_clipboard_get (GDK_SELECTION_PRIMARY),
&iter,
text_view->editable);
return TRUE;
}
else if (event->button == 3)
{
gtk_text_view_do_popup (text_view, event);
}
}
else if ((event->type == GDK_2BUTTON_PRESS ||
event->type == GDK_3BUTTON_PRESS) &&
event->button == 1)
{
GtkTextIter start, end;
/* End the selection drag, otherwise we'd clear the new
* word/line selection on button release
*/
gtk_text_view_end_selection_drag (text_view, event);
gtk_text_layout_get_iter_at_pixel (text_view->layout,
&start,
event->x + text_view->xoffset,
event->y + text_view->yoffset);
end = start;
if (event->type == GDK_2BUTTON_PRESS)
{
if (gtk_text_iter_inside_word (&start))
{
if (!gtk_text_iter_starts_word (&start))
gtk_text_iter_backward_word_start (&start);
if (!gtk_text_iter_ends_word (&end))
gtk_text_iter_forward_word_end (&end);
}
}
else if (event->type == GDK_3BUTTON_PRESS)
{
if (gtk_text_view_starts_display_line (text_view, &start))
{
/* If on a display line boundary, we assume the user
* clicked off the end of a line and we therefore select
* the line before the boundary.
*/
gtk_text_view_backward_display_line_start (text_view, &start);
}
else
{
/* start isn't on the start of a line, so we move it to the
* start, and move end to the end unless it's already there.
*/
gtk_text_view_backward_display_line_start (text_view, &start);
if (!gtk_text_view_starts_display_line (text_view, &end))
gtk_text_view_forward_display_line_end (text_view, &end);
}
}
gtk_text_buffer_move_mark (get_buffer (text_view),
gtk_text_buffer_get_selection_bound (get_buffer (text_view)),
&start);
gtk_text_buffer_move_mark (get_buffer (text_view),
gtk_text_buffer_get_insert (get_buffer (text_view)),
&end);
text_view->just_selected_element = TRUE;
return TRUE;
}
return FALSE;
}
static gint
gtk_text_view_button_release_event (GtkWidget *widget, GdkEventButton *event)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
if (event->window != text_view->text_window->bin_window)
return FALSE;
if (event->button == 1)
{
if (text_view->drag_start_x >= 0)
{
text_view->drag_start_x = -1;
text_view->drag_start_y = -1;
}
if (gtk_text_view_end_selection_drag (GTK_TEXT_VIEW (widget), event))
return TRUE;
else if (text_view->just_selected_element)
{
text_view->just_selected_element = FALSE;
return FALSE;
}
else if (text_view->pending_place_cursor_button == event->button)
{
GtkTextIter iter;
/* Unselect everything; we clicked inside selection, but
* didn't move by the drag threshold, so just clear selection
* and place cursor.
*/
gtk_text_layout_get_iter_at_pixel (text_view->layout,
&iter,
event->x + text_view->xoffset,
event->y + text_view->yoffset);
gtk_text_buffer_place_cursor (get_buffer (text_view), &iter);
text_view->pending_place_cursor_button = 0;
return FALSE;
}
}
return FALSE;
}
static void
keymap_direction_changed (GdkKeymap *keymap,
GtkTextView *text_view)
{
gtk_text_view_check_keymap_direction (text_view);
}
static gint
gtk_text_view_focus_in_event (GtkWidget *widget, GdkEventFocus *event)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
gtk_widget_queue_draw (widget);
DV(g_print (G_STRLOC": focus_in_event\n"));
if (text_view->cursor_visible && text_view->layout)
{
gtk_text_layout_set_cursor_visible (text_view->layout, TRUE);
gtk_text_view_check_cursor_blink (text_view);
}
g_signal_connect (gdk_keymap_get_default (),
"direction_changed",
G_CALLBACK (keymap_direction_changed), text_view);
gtk_text_view_check_keymap_direction (text_view);
text_view->need_im_reset = TRUE;
gtk_im_context_focus_in (GTK_TEXT_VIEW (widget)->im_context);
return FALSE;
}
static gint
gtk_text_view_focus_out_event (GtkWidget *widget, GdkEventFocus *event)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
gtk_widget_queue_draw (widget);
DV(g_print (G_STRLOC": focus_out_event\n"));
if (text_view->cursor_visible && text_view->layout)
{
gtk_text_layout_set_cursor_visible (text_view->layout, FALSE);
gtk_text_view_check_cursor_blink (text_view);
}
g_signal_handlers_disconnect_by_func (gdk_keymap_get_default (),
keymap_direction_changed,
text_view);
text_view->need_im_reset = TRUE;
gtk_im_context_focus_out (GTK_TEXT_VIEW (widget)->im_context);
return FALSE;
}
static gint
gtk_text_view_motion_event (GtkWidget *widget, GdkEventMotion *event)
{
GtkTextView *text_view = GTK_TEXT_VIEW (widget);
if (event->window == text_view->text_window->bin_window &&
text_view->drag_start_x >= 0)
{
gint x, y;
gdk_window_get_pointer (text_view->text_window->bin_window,
&x, &y, NULL);
if (gtk_drag_check_threshold (widget,
text_view->drag_start_x,
text_view->drag_start_y,
x, y))
{
GtkTextIter iter;
gint buffer_x, buffer_y;
gtk_text_view_window_to_buffer_coords (text_view,
GTK_TEXT_WINDOW_TEXT,
text_view->drag_start_x,
text_view->drag_start_y,
&buffer_x,
&buffer_y);
gtk_text_layout_get_iter_at_pixel (text_view->layout,
&iter,
buffer_x, buffer_y);
gtk_text_view_start_selection_dnd (text_view, &iter, event);
return TRUE;
}
}
return FALSE;
}
static void
gtk_text_view_paint (GtkWidget *widget, GdkRectangle *area)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
g_return_if_fail (text_view->layout != NULL);
g_return_if_fail (text_view->xoffset >= 0);
g_return_if_fail (text_view->yoffset >= 0);
DV (g_print (G_STRLOC": first_validate_idle: %d\n",
text_view->first_validate_idle));
if (!text_view->onscreen_validated)
{
G_BREAKPOINT ();
g_warning (G_STRLOC ": somehow some text lines were modified or scrolling occurred since the last validation of lines on the screen");
}
#if 0
printf ("painting %d,%d %d x %d\n",
area->x, area->y,
area->width, area->height);
#endif
gtk_text_layout_draw (text_view->layout,
widget,
text_view->text_window->bin_window,
text_view->cursor_gc,
text_view->xoffset,
text_view->yoffset,
area->x, area->y,
area->width, area->height);
}
static gint
gtk_text_view_expose_event (GtkWidget *widget, GdkEventExpose *event)
{
#if 0
{
GdkWindow *win = event->window;
GdkColor color = { 0, 0, 0, 65535 };
GdkGC *gc = gdk_gc_new (win);
gdk_gc_set_rgb_fg_color (gc, &color);
gdk_draw_rectangle (win,
gc, TRUE,
event->area.x, event->area.y,
event->area.width, event->area.height);
gdk_gc_unref (gc);
}
#endif
if (event->window == gtk_text_view_get_window (GTK_TEXT_VIEW (widget),
GTK_TEXT_WINDOW_TEXT))
{
DV(g_print (">Exposed ("G_STRLOC")\n"));
gtk_text_view_paint (widget, &event->area);
}
if (event->window == widget->window)
gtk_text_view_draw_focus (widget);
return TRUE;
}
static void
gtk_text_view_draw_focus (GtkWidget *widget)
{
gboolean interior_focus;
/* We clear the focus if we are in interior focus mode. */
gtk_widget_style_get (widget, "interior_focus", &interior_focus, NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
if (GTK_WIDGET_HAS_FOCUS (widget) && !interior_focus)
{
gtk_paint_focus (widget->style, widget->window,
NULL, widget, "textview",
0, 0,
widget->allocation.width - 1,
widget->allocation.height - 1);
}
else
{
gdk_window_clear (widget->window);
}
}
}
static void
gtk_text_view_grab_focus (GtkWidget *widget)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
GTK_WIDGET_CLASS (parent_class)->grab_focus (widget);
if (!text_view->disable_scroll_on_focus)
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
}
/*
* Container
*/
static void
gtk_text_view_add (GtkContainer *container,
GtkWidget *child)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (container));
g_return_if_fail (GTK_IS_WIDGET (child));
/* This is pretty random. */
gtk_text_view_add_child_in_window (GTK_TEXT_VIEW (container),
child,
GTK_TEXT_WINDOW_WIDGET,
0, 0);
}
static void
gtk_text_view_remove (GtkContainer *container,
GtkWidget *child)
{
GSList *iter;
GtkTextView *text_view;
GtkTextViewChild *vc;
g_return_if_fail (GTK_IS_TEXT_VIEW (container));
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (child->parent == (GtkWidget*) container);
text_view = GTK_TEXT_VIEW (container);
vc = NULL;
iter = text_view->children;
while (iter != NULL)
{
vc = iter->data;
if (vc->widget == child)
break;
iter = g_slist_next (iter);
}
g_assert (iter != NULL); /* be sure we had the child in the list */
text_view->children = g_slist_remove (text_view->children, vc);
gtk_widget_unparent (vc->widget);
text_view_child_free (vc);
}
static void
gtk_text_view_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GSList *iter;
GtkTextView *text_view;
g_return_if_fail (GTK_IS_TEXT_VIEW (container));
g_return_if_fail (callback != NULL);
text_view = GTK_TEXT_VIEW (container);
iter = text_view->children;
while (iter != NULL)
{
GtkTextViewChild *vc = iter->data;
(* callback) (vc->widget, callback_data);
iter = g_slist_next (iter);
}
}
#define CURSOR_ON_MULTIPLIER 0.66
#define CURSOR_OFF_MULTIPLIER 0.34
#define CURSOR_PEND_MULTIPLIER 1.0
static gboolean
cursor_blinks (GtkTextView *text_view)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
gboolean blink;
#ifdef DEBUG_VALIDATION_AND_SCROLLING
return FALSE;
#endif
if (gtk_debug_flags & GTK_DEBUG_UPDATES)
return FALSE;
g_object_get (G_OBJECT (settings), "gtk-cursor-blink", &blink, NULL);
return blink;
}
static gint
get_cursor_time (GtkTextView *text_view)
{
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
gint time;
g_object_get (G_OBJECT (settings), "gtk-cursor-blink-time", &time, NULL);
return time;
}
/*
* Blink!
*/
static gint
blink_cb (gpointer data)
{
GtkTextView *text_view;
gboolean visible;
GDK_THREADS_ENTER ();
text_view = GTK_TEXT_VIEW (data);
g_assert (text_view->layout);
g_assert (GTK_WIDGET_HAS_FOCUS (text_view));
g_assert (text_view->cursor_visible);
visible = gtk_text_layout_get_cursor_visible (text_view->layout);
if (visible)
text_view->blink_timeout = gtk_timeout_add (get_cursor_time (text_view) * CURSOR_OFF_MULTIPLIER,
blink_cb,
text_view);
else
text_view->blink_timeout = gtk_timeout_add (get_cursor_time (text_view) * CURSOR_ON_MULTIPLIER,
blink_cb,
text_view);
gtk_text_layout_set_cursor_visible (text_view->layout,
!visible);
GDK_THREADS_LEAVE ();
/* Remove ourselves */
return FALSE;
}
static void
gtk_text_view_stop_cursor_blink (GtkTextView *text_view)
{
if (text_view->blink_timeout)
{
gtk_timeout_remove (text_view->blink_timeout);
text_view->blink_timeout = 0;
}
}
static void
gtk_text_view_check_cursor_blink (GtkTextView *text_view)
{
if (text_view->layout != NULL &&
text_view->cursor_visible &&
GTK_WIDGET_HAS_FOCUS (text_view))
{
if (cursor_blinks (text_view))
{
if (text_view->blink_timeout == 0)
{
gtk_text_layout_set_cursor_visible (text_view->layout, TRUE);
text_view->blink_timeout = gtk_timeout_add (get_cursor_time (text_view) * CURSOR_OFF_MULTIPLIER,
blink_cb,
text_view);
}
}
else
gtk_text_layout_set_cursor_visible (text_view->layout, TRUE);
}
else
{
gtk_text_view_stop_cursor_blink (text_view);
}
}
static void
gtk_text_view_pend_cursor_blink(GtkTextView *text_view)
{
if (text_view->layout != NULL &&
text_view->cursor_visible &&
GTK_WIDGET_HAS_FOCUS (text_view) &&
cursor_blinks (text_view))
{
if (text_view->blink_timeout != 0)
{
gtk_timeout_remove (text_view->blink_timeout);
text_view->blink_timeout = 0;
}
gtk_text_layout_set_cursor_visible (text_view->layout, TRUE);
text_view->blink_timeout = gtk_timeout_add (get_cursor_time (text_view) * CURSOR_PEND_MULTIPLIER,
blink_cb,
text_view);
}
}
/*
* Key binding handlers
*/
static void
gtk_text_view_move_iter_by_lines (GtkTextView *text_view,
GtkTextIter *newplace,
gint count)
{
while (count < 0)
{
gtk_text_layout_move_iter_to_previous_line (text_view->layout, newplace);
count++;
}
while (count > 0)
{
gtk_text_layout_move_iter_to_next_line (text_view->layout, newplace);
count--;
}
}
static void
gtk_text_view_move_cursor (GtkTextView *text_view,
GtkMovementStep step,
gint count,
gboolean extend_selection)
{
GtkTextIter insert;
GtkTextIter newplace;
gint cursor_x_pos = 0;
gtk_text_view_reset_im_context (text_view);
if (step == GTK_MOVEMENT_PAGES)
{
gtk_text_view_scroll_pages (text_view, count);
gtk_text_view_pend_cursor_blink (text_view);
return;
}
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
newplace = insert;
if (step == GTK_MOVEMENT_DISPLAY_LINES)
gtk_text_view_get_virtual_cursor_pos (text_view, &cursor_x_pos, NULL);
switch (step)
{
case GTK_MOVEMENT_LOGICAL_POSITIONS:
gtk_text_iter_forward_cursor_positions (&newplace, count);
break;
case GTK_MOVEMENT_VISUAL_POSITIONS:
gtk_text_layout_move_iter_visually (text_view->layout,
&newplace, count);
break;
case GTK_MOVEMENT_WORDS:
if (count < 0)
gtk_text_iter_backward_word_starts (&newplace, -count);
else if (count > 0)
gtk_text_iter_forward_word_ends (&newplace, count);
break;
case GTK_MOVEMENT_DISPLAY_LINES:
gtk_text_view_move_iter_by_lines (text_view, &newplace, count);
gtk_text_layout_move_iter_to_x (text_view->layout, &newplace, cursor_x_pos);
break;
case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
if (count > 1)
gtk_text_view_move_iter_by_lines (text_view, &newplace, --count);
else if (count < -1)
gtk_text_view_move_iter_by_lines (text_view, &newplace, ++count);
if (count != 0)
gtk_text_layout_move_iter_to_line_end (text_view->layout, &newplace, count);
break;
case GTK_MOVEMENT_PARAGRAPHS:
gtk_text_iter_forward_lines (&newplace, count);
gtk_text_iter_set_line_offset (&newplace, 0);
break;
case GTK_MOVEMENT_PARAGRAPH_ENDS:
if (count > 0)
gtk_text_iter_forward_to_line_end (&newplace);
else if (count < 0)
gtk_text_iter_set_line_offset (&newplace, 0);
break;
case GTK_MOVEMENT_BUFFER_ENDS:
if (count > 0)
gtk_text_buffer_get_end_iter (get_buffer (text_view), &newplace);
else if (count < 0)
gtk_text_buffer_get_iter_at_offset (get_buffer (text_view), &newplace, 0);
break;
default:
break;
}
if (!gtk_text_iter_equal (&insert, &newplace))
{
if (extend_selection)
gtk_text_buffer_move_mark (get_buffer (text_view),
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"),
&newplace);
else
gtk_text_buffer_place_cursor (get_buffer (text_view), &newplace);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
if (step == GTK_MOVEMENT_DISPLAY_LINES)
{
gtk_text_view_set_virtual_cursor_pos (text_view, cursor_x_pos, -1);
}
}
gtk_text_view_pend_cursor_blink (text_view);
}
static void
gtk_text_view_set_anchor (GtkTextView *text_view)
{
GtkTextIter insert;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
gtk_text_buffer_create_mark (get_buffer (text_view), "anchor", &insert, TRUE);
}
static void
gtk_text_view_scroll_pages (GtkTextView *text_view,
gint count)
{
gdouble newval;
GtkAdjustment *adj;
gint cursor_x_pos, cursor_y_pos;
GtkTextIter new_insert;
GtkTextIter anchor;
gint y0, y1;
g_return_if_fail (text_view->vadjustment != NULL);
adj = text_view->vadjustment;
/* Validate the region that will be brought into view by the cursor motion
*/
if (count < 0)
{
gtk_text_view_get_first_para_iter (text_view, &anchor);
y0 = adj->page_size;
y1 = adj->page_size + count * adj->page_increment;
}
else
{
gtk_text_view_get_first_para_iter (text_view, &anchor);
y0 = count * adj->page_increment + adj->page_size;
y1 = 0;
}
gtk_text_layout_validate_yrange (text_view->layout, &anchor, y0, y1);
/* FIXME do we need to update the adjustment ranges here? */
gtk_text_view_get_virtual_cursor_pos (text_view, &cursor_x_pos, &cursor_y_pos);
newval = adj->value;
newval += count * adj->page_increment;
cursor_y_pos += newval - adj->value;
set_adjustment_clamped (adj, newval);
gtk_text_layout_get_iter_at_pixel (text_view->layout, &new_insert, cursor_x_pos, cursor_y_pos);
clamp_iter_onscreen (text_view, &new_insert);
gtk_text_buffer_place_cursor (get_buffer (text_view), &new_insert);
gtk_text_view_set_virtual_cursor_pos (text_view, cursor_x_pos, cursor_y_pos);
/* Adjust to have the cursor _entirely_ onscreen, move_mark_onscreen
* only guarantees 1 pixel onscreen.
*/
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
}
static gboolean
whitespace (gunichar ch, gpointer user_data)
{
return (ch == ' ' || ch == '\t');
}
static gboolean
not_whitespace (gunichar ch, gpointer user_data)
{
return !whitespace (ch, user_data);
}
static gboolean
find_whitepace_region (const GtkTextIter *center,
GtkTextIter *start, GtkTextIter *end)
{
*start = *center;
*end = *center;
if (gtk_text_iter_backward_find_char (start, not_whitespace, NULL, NULL))
gtk_text_iter_forward_char (start); /* we want the first whitespace... */
if (whitespace (gtk_text_iter_get_char (end), NULL))
gtk_text_iter_forward_find_char (end, not_whitespace, NULL, NULL);
return !gtk_text_iter_equal (start, end);
}
static void
gtk_text_view_insert_at_cursor (GtkTextView *text_view,
const gchar *str)
{
gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), str, -1,
text_view->editable);
}
static void
gtk_text_view_delete_from_cursor (GtkTextView *text_view,
GtkDeleteType type,
gint count)
{
GtkTextIter insert;
GtkTextIter start;
GtkTextIter end;
gboolean leave_one = FALSE;
gtk_text_view_reset_im_context (text_view);
if (type == GTK_DELETE_CHARS)
{
/* Char delete deletes the selection, if one exists */
if (gtk_text_buffer_delete_selection (get_buffer (text_view), TRUE,
text_view->editable))
return;
}
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&insert,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
start = insert;
end = insert;
switch (type)
{
case GTK_DELETE_CHARS:
gtk_text_iter_forward_cursor_positions (&end, count);
break;
case GTK_DELETE_WORD_ENDS:
if (count > 0)
gtk_text_iter_forward_word_ends (&end, count);
else if (count < 0)
gtk_text_iter_backward_word_starts (&start, 0 - count);
break;
case GTK_DELETE_WORDS:
break;
case GTK_DELETE_DISPLAY_LINE_ENDS:
break;
case GTK_DELETE_DISPLAY_LINES:
break;
case GTK_DELETE_PARAGRAPH_ENDS:
/* If we're already at a newline, we need to
* simply delete that newline, instead of
* moving to the next one.
*/
if (gtk_text_iter_ends_line (&end))
{
gtk_text_iter_forward_line (&end);
--count;
}
while (count > 0)
{
if (!gtk_text_iter_forward_to_line_end (&end))
break;
--count;
}
/* FIXME figure out what a negative count means
and support that */
break;
case GTK_DELETE_PARAGRAPHS:
if (count > 0)
{
gtk_text_iter_set_line_offset (&start, 0);
gtk_text_iter_forward_to_line_end (&end);
/* Do the lines beyond the first. */
while (count > 1)
{
gtk_text_iter_forward_to_line_end (&end);
--count;
}
}
/* FIXME negative count? */
break;
case GTK_DELETE_WHITESPACE:
{
find_whitepace_region (&insert, &start, &end);
}
break;
default:
break;
}
if (!gtk_text_iter_equal (&start, &end))
{
gtk_text_buffer_begin_user_action (get_buffer (text_view));
if (gtk_text_buffer_delete_interactive (get_buffer (text_view), &start, &end,
text_view->editable))
{
if (leave_one)
gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view),
" ", 1,
text_view->editable);
}
gtk_text_buffer_end_user_action (get_buffer (text_view));
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_mark (get_buffer (text_view), "insert"));
}
}
static void
gtk_text_view_cut_clipboard (GtkTextView *text_view)
{
gtk_text_buffer_cut_clipboard (get_buffer (text_view),
gtk_clipboard_get (GDK_SELECTION_CLIPBOARD),
text_view->editable);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
}
static void
gtk_text_view_copy_clipboard (GtkTextView *text_view)
{
gtk_text_buffer_copy_clipboard (get_buffer (text_view),
gtk_clipboard_get (GDK_SELECTION_CLIPBOARD));
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
}
static void
gtk_text_view_paste_clipboard (GtkTextView *text_view)
{
gtk_text_buffer_paste_clipboard (get_buffer (text_view),
gtk_clipboard_get (GDK_SELECTION_CLIPBOARD),
NULL,
text_view->editable);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
}
static void
gtk_text_view_toggle_overwrite (GtkTextView *text_view)
{
text_view->overwrite_mode = !text_view->overwrite_mode;
}
/*
* Selections
*/
static void
gtk_text_view_unselect (GtkTextView *text_view)
{
GtkTextIter insert;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&insert,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
gtk_text_buffer_move_mark (get_buffer (text_view),
gtk_text_buffer_get_mark (get_buffer (text_view),
"selection_bound"),
&insert);
}
static void
move_mark_to_pointer_and_scroll (GtkTextView *text_view,
const gchar *mark_name)
{
gint x, y;
GdkModifierType state;
GtkTextIter newplace;
/* DV(g_print (G_STRLOC": begin\n")); */
gdk_window_get_pointer (text_view->text_window->bin_window,
&x, &y, &state);
/* DV(g_print (G_STRLOC": get iter at pixel\n"); */
gtk_text_layout_get_iter_at_pixel (text_view->layout,
&newplace,
x + text_view->xoffset,
y + text_view->yoffset);
{
GtkTextMark *mark =
gtk_text_buffer_get_mark (get_buffer (text_view), mark_name);
DV(g_print (G_STRLOC": move mark\n"));
gtk_text_buffer_move_mark (get_buffer (text_view),
mark,
&newplace);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view, mark);
}
}
static gint
selection_scan_timeout (gpointer data)
{
GtkTextView *text_view;
GDK_THREADS_ENTER ();
text_view = GTK_TEXT_VIEW (data);
DV(g_print (G_STRLOC": calling move_mark_to_pointer_and_scroll\n"));
move_mark_to_pointer_and_scroll (text_view, "insert");
GDK_THREADS_LEAVE ();
return TRUE; /* remain installed. */
}
#define DND_SCROLL_MARGIN 0.20
static gint
drag_scan_timeout (gpointer data)
{
GtkTextView *text_view;
gint x, y;
GdkModifierType state;
GtkTextIter newplace;
GDK_THREADS_ENTER ();
text_view = GTK_TEXT_VIEW (data);
gdk_window_get_pointer (text_view->text_window->bin_window,
&x, &y, &state);
gtk_text_layout_get_iter_at_pixel (text_view->layout,
&newplace,
x + text_view->xoffset,
y + text_view->yoffset);
gtk_text_buffer_move_mark (get_buffer (text_view),
text_view->dnd_mark,
&newplace);
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_to_mark (text_view,
text_view->dnd_mark,
DND_SCROLL_MARGIN, FALSE, 0.0, 0.0);
GDK_THREADS_LEAVE ();
return TRUE;
}
static gint
selection_motion_event_handler (GtkTextView *text_view, GdkEventMotion *event, gpointer data)
{
DV(g_print (G_STRLOC": calling move_mark_to_pointer_and_scroll\n"));
move_mark_to_pointer_and_scroll (text_view, "insert");
/* If we had to scroll offscreen, insert a timeout to do so
* again. Note that in the timeout, even if the mouse doesn't
* move, due to this scroll xoffset/yoffset will have changed
* and we'll need to scroll again.
*/
if (text_view->scroll_timeout != 0) /* reset on every motion event */
gtk_timeout_remove (text_view->scroll_timeout);
text_view->scroll_timeout =
gtk_timeout_add (50, selection_scan_timeout, text_view);
return TRUE;
}
static void
gtk_text_view_start_selection_drag (GtkTextView *text_view,
const GtkTextIter *iter,
GdkEventButton *button)
{
GtkTextIter newplace;
g_return_if_fail (text_view->selection_drag_handler == 0);
gtk_grab_add (GTK_WIDGET (text_view));
newplace = *iter;
gtk_text_buffer_place_cursor (get_buffer (text_view), &newplace);
text_view->selection_drag_handler = gtk_signal_connect (GTK_OBJECT (text_view),
"motion_notify_event",
GTK_SIGNAL_FUNC (selection_motion_event_handler),
NULL);
}
/* returns whether we were really dragging */
static gboolean
gtk_text_view_end_selection_drag (GtkTextView *text_view, GdkEventButton *event)
{
if (text_view->selection_drag_handler == 0)
return FALSE;
gtk_signal_disconnect (GTK_OBJECT (text_view), text_view->selection_drag_handler);
text_view->selection_drag_handler = 0;
if (text_view->scroll_timeout != 0)
{
gtk_timeout_remove (text_view->scroll_timeout);
text_view->scroll_timeout = 0;
}
/* one last update to current position */
DV(g_print (G_STRLOC": calling move_mark_to_pointer_and_scroll\n"));
move_mark_to_pointer_and_scroll (text_view, "insert");
gtk_grab_remove (GTK_WIDGET (text_view));
return TRUE;
}
/*
* Layout utils
*/
static void
gtk_text_view_set_attributes_from_style (GtkTextView *text_view,
GtkTextAttributes *values,
GtkStyle *style)
{
values->appearance.bg_color = style->base[GTK_STATE_NORMAL];
values->appearance.fg_color = style->text[GTK_STATE_NORMAL];
if (values->font)
pango_font_description_free (values->font);
values->font = pango_font_description_copy (style->font_desc);
}
static void
gtk_text_view_check_keymap_direction (GtkTextView *text_view)
{
if (text_view->layout)
{
gboolean split_cursor;
GtkTextDirection new_dir;
GtkSettings *settings = gtk_widget_get_settings (GTK_WIDGET (text_view));
g_object_get (G_OBJECT (settings),
"gtk-split-cursor", &split_cursor,
NULL);
if (split_cursor)
new_dir = GTK_TEXT_DIR_NONE;
else
new_dir = (gdk_keymap_get_direction (gdk_keymap_get_default ()) == PANGO_DIRECTION_LTR) ?
GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;
if (text_view->layout->cursor_direction != new_dir)
gtk_text_layout_set_cursor_direction (text_view->layout, new_dir);
}
}
static void
gtk_text_view_ensure_layout (GtkTextView *text_view)
{
GtkWidget *widget;
widget = GTK_WIDGET (text_view);
if (text_view->layout == NULL)
{
GtkTextAttributes *style;
PangoContext *ltr_context, *rtl_context;
GSList *tmp_list;
DV(g_print(G_STRLOC"\n"));
text_view->layout = gtk_text_layout_new ();
g_signal_connect (G_OBJECT (text_view->layout),
"invalidated",
G_CALLBACK (invalidated_handler),
text_view);
g_signal_connect (G_OBJECT (text_view->layout),
"changed",
G_CALLBACK (changed_handler),
text_view);
g_signal_connect (G_OBJECT (text_view->layout),
"allocate_child",
G_CALLBACK (gtk_text_view_child_allocated),
text_view);
if (get_buffer (text_view))
gtk_text_layout_set_buffer (text_view->layout, get_buffer (text_view));
if ((GTK_WIDGET_HAS_FOCUS (text_view) && text_view->cursor_visible))
gtk_text_view_pend_cursor_blink (text_view);
else
gtk_text_layout_set_cursor_visible (text_view->layout, FALSE);
ltr_context = gtk_widget_create_pango_context (GTK_WIDGET (text_view));
pango_context_set_base_dir (ltr_context, PANGO_DIRECTION_LTR);
rtl_context = gtk_widget_create_pango_context (GTK_WIDGET (text_view));
pango_context_set_base_dir (rtl_context, PANGO_DIRECTION_RTL);
gtk_text_layout_set_contexts (text_view->layout, ltr_context, rtl_context);
g_object_unref (G_OBJECT (ltr_context));
g_object_unref (G_OBJECT (rtl_context));
gtk_text_view_check_keymap_direction (text_view);
style = gtk_text_attributes_new ();
gtk_widget_ensure_style (widget);
gtk_text_view_set_attributes_from_style (text_view,
style, widget->style);
style->pixels_above_lines = text_view->pixels_above_lines;
style->pixels_below_lines = text_view->pixels_below_lines;
style->pixels_inside_wrap = text_view->pixels_inside_wrap;
style->left_margin = text_view->left_margin;
style->right_margin = text_view->right_margin;
style->indent = text_view->indent;
style->tabs = text_view->tabs ? pango_tab_array_copy (text_view->tabs) : NULL;
style->wrap_mode = text_view->wrap_mode;
style->justification = text_view->justify;
style->direction = gtk_widget_get_direction (GTK_WIDGET (text_view));
gtk_text_layout_set_default_style (text_view->layout, style);
gtk_text_attributes_unref (style);
/* Set layout for all anchored children */
tmp_list = text_view->children;
while (tmp_list != NULL)
{
GtkTextViewChild *vc = tmp_list->data;
if (vc->anchor)
{
gtk_text_anchored_child_set_layout (vc->widget,
text_view->layout);
/* vc may now be invalid! */
}
tmp_list = g_slist_next (tmp_list);
}
}
}
/**
* gtk_text_view_get_default_attributes:
* @text_view: a #GtkTextView
*
* Obtains a copy of the default text attributes. These are the
* attributes used for text unless a tag overrides them.
* You'd typically pass the default attributes in to
* gtk_text_tag_get_attributes() in order to get the
* attributes in effect at a given text position.
*
* The return value is a copy owned by the caller of this function,
* and should be freed.
*
* Return value: a new #GtkTextAttributes
**/
GtkTextAttributes*
gtk_text_view_get_default_attributes (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
gtk_text_view_ensure_layout (text_view);
return gtk_text_attributes_copy (text_view->layout->default_style);
}
static void
gtk_text_view_destroy_layout (GtkTextView *text_view)
{
if (text_view->layout)
{
GSList *tmp_list;
if (text_view->first_validate_idle)
{
g_source_remove (text_view->first_validate_idle);
text_view->first_validate_idle = 0;
}
if (text_view->incremental_validate_idle)
{
g_source_remove (text_view->incremental_validate_idle);
text_view->incremental_validate_idle = 0;
}
/* Remove layout from all anchored children */
tmp_list = text_view->children;
while (tmp_list != NULL)
{
GtkTextViewChild *vc = tmp_list->data;
if (vc->anchor)
{
gtk_text_anchored_child_set_layout (vc->widget, NULL);
/* vc may now be invalid! */
}
tmp_list = g_slist_next (tmp_list);
}
gtk_text_view_stop_cursor_blink (text_view);
gtk_text_view_end_selection_drag (text_view, NULL);
g_signal_handlers_disconnect_by_func (G_OBJECT (text_view->layout),
invalidated_handler, text_view);
g_signal_handlers_disconnect_by_func (G_OBJECT (text_view->layout),
changed_handler, text_view);
g_object_unref (G_OBJECT (text_view->layout));
text_view->layout = NULL;
}
}
static void
gtk_text_view_reset_im_context (GtkTextView *text_view)
{
if (text_view->need_im_reset)
{
text_view->need_im_reset = FALSE;
gtk_im_context_reset (text_view->im_context);
}
}
/*
* DND feature
*/
static void
gtk_text_view_start_selection_dnd (GtkTextView *text_view,
const GtkTextIter *iter,
GdkEventMotion *event)
{
GdkDragContext *context;
GtkTargetList *target_list;
text_view->drag_start_x = -1;
text_view->drag_start_y = -1;
text_view->pending_place_cursor_button = 0;
target_list = gtk_target_list_new (target_table,
G_N_ELEMENTS (target_table));
context = gtk_drag_begin (GTK_WIDGET (text_view), target_list,
GDK_ACTION_COPY | GDK_ACTION_MOVE,
1, (GdkEvent*)event);
gtk_target_list_unref (target_list);
gtk_drag_set_icon_default (context);
}
static void
gtk_text_view_drag_begin (GtkWidget *widget,
GdkDragContext *context)
{
/* do nothing */
}
static void
gtk_text_view_drag_end (GtkWidget *widget,
GdkDragContext *context)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
}
static void
gtk_text_view_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
if (selection_data->target == gdk_atom_intern ("GTK_TEXT_BUFFER_CONTENTS", FALSE))
{
GtkTextBuffer *buffer = gtk_text_view_get_buffer (text_view);
gtk_selection_data_set (selection_data,
gdk_atom_intern ("GTK_TEXT_BUFFER_CONTENTS", FALSE),
8, /* bytes */
(void*)&buffer,
sizeof (buffer));
}
else
{
gchar *str;
GtkTextIter start;
GtkTextIter end;
str = NULL;
if (gtk_text_buffer_get_selection_bounds (get_buffer (text_view),
&start, &end))
{
/* Extract the selected text */
str = gtk_text_iter_get_visible_text (&start, &end);
}
if (str)
{
gtk_selection_data_set_text (selection_data, str);
g_free (str);
}
}
}
static void
gtk_text_view_drag_data_delete (GtkWidget *widget,
GdkDragContext *context)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
gtk_text_buffer_delete_selection (GTK_TEXT_VIEW (widget)->buffer,
TRUE, GTK_TEXT_VIEW (widget)->editable);
}
static void
gtk_text_view_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
gtk_text_mark_set_visible (text_view->dnd_mark, FALSE);
if (text_view->scroll_timeout != 0)
gtk_timeout_remove (text_view->scroll_timeout);
text_view->scroll_timeout = 0;
}
static gboolean
gtk_text_view_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkTextIter newplace;
GtkTextView *text_view;
GtkTextIter start;
GtkTextIter end;
GdkRectangle target_rect;
gint bx, by;
GdkDragAction suggested_action = 0;
text_view = GTK_TEXT_VIEW (widget);
target_rect = text_view->text_window->allocation;
if (x < target_rect.x ||
y < target_rect.y ||
x > (target_rect.x + target_rect.width) ||
y > (target_rect.y + target_rect.height))
return FALSE; /* outside the text window, allow parent widgets to handle event */
gtk_text_view_window_to_buffer_coords (text_view,
GTK_TEXT_WINDOW_WIDGET,
x, y,
&bx, &by);
gtk_text_layout_get_iter_at_pixel (text_view->layout,
&newplace,
bx, by);
if (gtk_drag_dest_find_target (widget, context,
gtk_drag_dest_get_target_list (widget)) == GDK_NONE)
{
/* can't accept any of the offered targets */
}
else if (gtk_text_buffer_get_selection_bounds (get_buffer (text_view),
&start, &end) &&
gtk_text_iter_in_range (&newplace, &start, &end))
{
/* We're inside the selection. */
}
else
{
if (gtk_text_iter_can_insert (&newplace, text_view->editable))
{
GtkWidget *source_widget;
suggested_action = context->suggested_action;
source_widget = gtk_drag_get_source_widget (context);
if (source_widget == widget)
{
/* Default to MOVE, unless the user has
* pressed ctrl or alt to affect available actions
*/
if ((context->actions & GDK_ACTION_MOVE) != 0)
suggested_action = GDK_ACTION_MOVE;
}
}
else
{
/* Can't drop here. */
}
}
if (suggested_action != 0)
{
gtk_text_mark_set_visible (text_view->dnd_mark,
text_view->cursor_visible);
gdk_drag_status (context, suggested_action, time);
}
else
{
gdk_drag_status (context, 0, time);
gtk_text_mark_set_visible (text_view->dnd_mark, FALSE);
}
gtk_text_buffer_move_mark (get_buffer (text_view),
text_view->dnd_mark,
&newplace);
DV(g_print (G_STRLOC": scrolling to mark\n"));
gtk_text_view_scroll_to_mark (text_view,
text_view->dnd_mark,
DND_SCROLL_MARGIN, FALSE, 0.0, 0.0);
if (text_view->scroll_timeout != 0) /* reset on every motion event */
gtk_timeout_remove (text_view->scroll_timeout);
text_view->scroll_timeout =
gtk_timeout_add (50, drag_scan_timeout, text_view);
/* TRUE return means don't propagate the drag motion to parent
* widgets that may also be drop sites.
*/
return TRUE;
}
static gboolean
gtk_text_view_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkTextView *text_view;
GtkTextIter drop_point;
GdkAtom target = GDK_NONE;
text_view = GTK_TEXT_VIEW (widget);
if (text_view->scroll_timeout != 0)
gtk_timeout_remove (text_view->scroll_timeout);
text_view->scroll_timeout = 0;
gtk_text_mark_set_visible (text_view->dnd_mark, FALSE);
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&drop_point,
text_view->dnd_mark);
if (gtk_text_iter_can_insert (&drop_point, text_view->editable))
target = gtk_drag_dest_find_target (widget, context, NULL);
if (target != GDK_NONE)
gtk_drag_get_data (widget, context, target, time);
else
gtk_drag_finish (context, FALSE, FALSE, time);
return TRUE;
}
static void
insert_text_data (GtkTextView *text_view,
GtkTextIter *drop_point,
GtkSelectionData *selection_data)
{
gchar *str;
str = gtk_selection_data_get_text (selection_data);
if (str)
{
gtk_text_buffer_insert_interactive (get_buffer (text_view),
drop_point, str, -1,
text_view->editable);
g_free (str);
}
}
static void
gtk_text_view_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint time)
{
GtkTextIter drop_point;
GtkTextView *text_view;
gboolean success = FALSE;
text_view = GTK_TEXT_VIEW (widget);
if (!text_view->dnd_mark)
goto done;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&drop_point,
text_view->dnd_mark);
if (!gtk_text_iter_can_insert (&drop_point, text_view->editable))
goto done;
if (selection_data->target == gdk_atom_intern ("GTK_TEXT_BUFFER_CONTENTS", FALSE))
{
GtkTextBuffer *src_buffer = NULL;
GtkTextIter start, end;
gboolean copy_tags = TRUE;
if (selection_data->length != sizeof (src_buffer))
return;
memcpy (&src_buffer, selection_data->data, sizeof (src_buffer));
if (src_buffer == NULL)
return;
g_return_if_fail (GTK_IS_TEXT_BUFFER (src_buffer));
if (gtk_text_buffer_get_tag_table (src_buffer) !=
gtk_text_buffer_get_tag_table (get_buffer (text_view)))
copy_tags = FALSE;
if (gtk_text_buffer_get_selection_bounds (src_buffer,
&start,
&end))
{
if (copy_tags)
gtk_text_buffer_insert_range_interactive (get_buffer (text_view),
&drop_point,
&start,
&end,
text_view->editable);
else
{
gchar *str;
str = gtk_text_iter_get_visible_text (&start, &end);
gtk_text_buffer_insert_interactive (get_buffer (text_view),
&drop_point, str, -1,
text_view->editable);
g_free (str);
}
}
}
else
insert_text_data (text_view, &drop_point, selection_data);
success = TRUE;
done:
gtk_drag_finish (context, success,
success && context->action == GDK_ACTION_MOVE,
time);
}
static GtkAdjustment*
get_hadjustment (GtkTextView *text_view)
{
if (text_view->hadjustment == NULL)
gtk_text_view_set_scroll_adjustments (text_view,
NULL, /* forces creation */
text_view->vadjustment);
return text_view->hadjustment;
}
static GtkAdjustment*
get_vadjustment (GtkTextView *text_view)
{
if (text_view->vadjustment == NULL)
gtk_text_view_set_scroll_adjustments (text_view,
text_view->hadjustment,
NULL); /* forces creation */
return text_view->vadjustment;
}
static void
gtk_text_view_set_scroll_adjustments (GtkTextView *text_view,
GtkAdjustment *hadj,
GtkAdjustment *vadj)
{
gboolean need_adjust = FALSE;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
if (hadj)
g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
else
hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
if (vadj)
g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
else
vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
if (text_view->hadjustment && (text_view->hadjustment != hadj))
{
gtk_signal_disconnect_by_data (GTK_OBJECT (text_view->hadjustment), text_view);
g_object_unref (G_OBJECT (text_view->hadjustment));
}
if (text_view->vadjustment && (text_view->vadjustment != vadj))
{
gtk_signal_disconnect_by_data (GTK_OBJECT (text_view->vadjustment), text_view);
g_object_unref (G_OBJECT (text_view->vadjustment));
}
if (text_view->hadjustment != hadj)
{
text_view->hadjustment = hadj;
g_object_ref (G_OBJECT (text_view->hadjustment));
gtk_object_sink (GTK_OBJECT (text_view->hadjustment));
gtk_signal_connect (GTK_OBJECT (text_view->hadjustment), "value_changed",
(GtkSignalFunc) gtk_text_view_value_changed,
text_view);
need_adjust = TRUE;
}
if (text_view->vadjustment != vadj)
{
text_view->vadjustment = vadj;
g_object_ref (G_OBJECT (text_view->vadjustment));
gtk_object_sink (GTK_OBJECT (text_view->vadjustment));
gtk_signal_connect (GTK_OBJECT (text_view->vadjustment), "value_changed",
(GtkSignalFunc) gtk_text_view_value_changed,
text_view);
need_adjust = TRUE;
}
if (need_adjust)
gtk_text_view_value_changed (NULL, text_view);
}
static void
gtk_text_view_value_changed (GtkAdjustment *adj,
GtkTextView *text_view)
{
GtkTextIter iter;
gint line_top;
gint dx = 0;
gint dy = 0;
/* Note that we oddly call this function with adj == NULL
* sometimes
*/
text_view->onscreen_validated = FALSE;
DV(g_print(">Scroll offset changed %s/%g, onscreen_validated = FALSE ("G_STRLOC")\n",
adj == text_view->hadjustment ? "hadj" : adj == text_view->vadjustment ? "vadj" : "none",
adj ? adj->value : 0.0));
if (adj == text_view->hadjustment)
{
dx = text_view->xoffset - (gint)adj->value;
text_view->xoffset = adj->value;
}
else if (adj == text_view->vadjustment)
{
dy = text_view->yoffset - (gint)adj->value;
text_view->yoffset = adj->value;
if (text_view->layout)
{
gtk_text_layout_get_line_at_y (text_view->layout, &iter, adj->value, &line_top);
gtk_text_buffer_move_mark (get_buffer (text_view), text_view->first_para_mark, &iter);
text_view->first_para_pixels = adj->value - line_top;
}
}
if (GTK_WIDGET_REALIZED (text_view) && (dx != 0 || dy != 0))
{
if (dy != 0)
{
if (text_view->left_window)
text_window_scroll (text_view->left_window, 0, dy);
if (text_view->right_window)
text_window_scroll (text_view->right_window, 0, dy);
}
if (dx != 0)
{
if (text_view->top_window)
text_window_scroll (text_view->top_window, dx, 0);
if (text_view->bottom_window)
text_window_scroll (text_view->bottom_window, dx, 0);
}
/* It looks nicer to scroll the main area last, because
* it takes a while, and making the side areas update
* afterward emphasizes the slowness of scrolling the
* main area.
*/
text_window_scroll (text_view->text_window, dx, dy);
}
/* This could result in invalidation, which would install the
* first_validate_idle, which would validate onscreen;
* but we're going to go ahead and validate here, so
* first_validate_idle shouldn't have anything to do.
*/
gtk_text_view_update_layout_width (text_view);
/* note that validation of onscreen could invoke this function
* recursively, by scrolling to maintain first_para, or in response
* to updating the layout width, however there is no problem with
* that, or shouldn't be.
*/
gtk_text_view_validate_onscreen (text_view);
/* process exposes */
if (GTK_WIDGET_REALIZED (text_view))
{
if (text_view->left_window)
gdk_window_process_updates (text_view->left_window->bin_window, TRUE);
if (text_view->right_window)
gdk_window_process_updates (text_view->right_window->bin_window, TRUE);
if (text_view->top_window)
gdk_window_process_updates (text_view->top_window->bin_window, TRUE);
if (text_view->bottom_window)
gdk_window_process_updates (text_view->bottom_window->bin_window, TRUE);
gdk_window_process_updates (text_view->text_window->bin_window, TRUE);
}
/* If this got installed, get rid of it, it's just a waste of time. */
if (text_view->first_validate_idle != 0)
{
g_source_remove (text_view->first_validate_idle);
text_view->first_validate_idle = 0;
}
gtk_text_view_update_im_spot_location (text_view);
DV(g_print(">End scroll offset changed handler ("G_STRLOC")\n"));
}
static void
gtk_text_view_commit_handler (GtkIMContext *context,
const gchar *str,
GtkTextView *text_view)
{
gboolean had_selection;
gtk_text_buffer_begin_user_action (get_buffer (text_view));
had_selection = gtk_text_buffer_get_selection_bounds (get_buffer (text_view),
NULL, NULL);
gtk_text_buffer_delete_selection (get_buffer (text_view), TRUE,
text_view->editable);
if (!strcmp (str, "\n"))
{
gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), "\n", 1,
text_view->editable);
}
else
{
if (!had_selection && text_view->overwrite_mode)
gtk_text_view_delete_from_cursor (text_view, GTK_DELETE_CHARS, 1);
gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), str, -1,
text_view->editable);
}
gtk_text_buffer_end_user_action (get_buffer (text_view));
DV(g_print (G_STRLOC": scrolling onscreen\n"));
gtk_text_view_scroll_mark_onscreen (text_view,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
}
static void
gtk_text_view_preedit_changed_handler (GtkIMContext *context,
GtkTextView *text_view)
{
gchar *str;
PangoAttrList *attrs;
gint cursor_pos;
gtk_im_context_get_preedit_string (context, &str, &attrs, &cursor_pos);
gtk_text_layout_set_preedit_string (text_view->layout, str, attrs, cursor_pos);
pango_attr_list_unref (attrs);
g_free (str);
}
static void
gtk_text_view_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data)
{
GtkTextView *text_view = GTK_TEXT_VIEW (data);
gboolean need_reset = FALSE;
if (mark == gtk_text_buffer_get_insert (buffer))
{
text_view->virtual_cursor_x = -1;
text_view->virtual_cursor_y = -1;
gtk_text_view_update_im_spot_location (text_view);
need_reset = TRUE;
}
else if (mark == gtk_text_buffer_get_selection_bound (buffer))
{
need_reset = TRUE;
}
if (need_reset)
gtk_text_view_reset_im_context (text_view);
}
static void
gtk_text_view_get_virtual_cursor_pos (GtkTextView *text_view,
gint *x,
gint *y)
{
GdkRectangle strong_pos;
GtkTextIter insert;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
if ((x && text_view->virtual_cursor_x == -1) ||
(y && text_view->virtual_cursor_y == -1))
gtk_text_layout_get_cursor_locations (text_view->layout, &insert, &strong_pos, NULL);
if (x)
{
if (text_view->virtual_cursor_x != -1)
*x = text_view->virtual_cursor_x;
else
*x = strong_pos.x;
}
if (y)
{
if (text_view->virtual_cursor_x != -1)
*y = text_view->virtual_cursor_y;
else
*y = strong_pos.y + strong_pos.height / 2;
}
}
static void
gtk_text_view_set_virtual_cursor_pos (GtkTextView *text_view,
gint x,
gint y)
{
GdkRectangle strong_pos;
GtkTextIter insert;
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert,
gtk_text_buffer_get_mark (get_buffer (text_view),
"insert"));
if (x == -1 || y == -1)
gtk_text_layout_get_cursor_locations (text_view->layout, &insert, &strong_pos, NULL);
text_view->virtual_cursor_x = (x == -1) ? strong_pos.x : x;
text_view->virtual_cursor_y = (y == -1) ? strong_pos.y + strong_pos.height / 2 : y;
}
/* Quick hack of a popup menu
*/
static void
activate_cb (GtkWidget *menuitem,
GtkTextView *text_view)
{
const gchar *signal = g_object_get_data (G_OBJECT (menuitem), "gtk-signal");
gtk_signal_emit_by_name (GTK_OBJECT (text_view), signal);
}
static void
append_action_signal (GtkTextView *text_view,
GtkWidget *menu,
const gchar *stock_id,
const gchar *signal,
gboolean sensitive)
{
GtkWidget *menuitem = gtk_image_menu_item_new_from_stock (stock_id, NULL);
g_object_set_data (G_OBJECT (menuitem), "gtk-signal", (char *)signal);
gtk_signal_connect (GTK_OBJECT (menuitem), "activate",
GTK_SIGNAL_FUNC (activate_cb), text_view);
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)
{
GTK_TEXT_VIEW (attach_widget)->popup_menu = NULL;
}
static void
popup_position_func (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer user_data)
{
GtkTextView *text_view;
GtkWidget *widget;
GdkRectangle cursor_rect;
GdkRectangle onscreen_rect;
gint root_x, root_y;
GtkTextIter iter;
GtkRequisition req;
text_view = GTK_TEXT_VIEW (user_data);
widget = GTK_WIDGET (text_view);
g_return_if_fail (GTK_WIDGET_REALIZED (text_view));
gdk_window_get_origin (widget->window, &root_x, &root_y);
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&iter,
gtk_text_buffer_get_insert (get_buffer (text_view)));
gtk_text_view_get_iter_location (text_view,
&iter,
&cursor_rect);
gtk_text_view_get_visible_rect (text_view, &onscreen_rect);
gtk_widget_size_request (text_view->popup_menu, &req);
/* can't use rectangle_intersect since cursor rect can have 0 width */
if (cursor_rect.x >= onscreen_rect.x &&
cursor_rect.x < onscreen_rect.x + onscreen_rect.width &&
cursor_rect.y >= onscreen_rect.y &&
cursor_rect.y < onscreen_rect.y + onscreen_rect.height)
{
gtk_text_view_buffer_to_window_coords (text_view,
GTK_TEXT_WINDOW_WIDGET,
cursor_rect.x, cursor_rect.y,
&cursor_rect.x, &cursor_rect.y);
*x = root_x + cursor_rect.x + cursor_rect.width;
*y = root_y + cursor_rect.y + cursor_rect.height;
}
else
{
/* Just center the menu, since cursor is offscreen. */
*x = root_x + (widget->allocation.width / 2 - req.width / 2);
*y = root_y + (widget->allocation.height / 2 - req.height / 2);
}
/* Ensure sanity */
*x = CLAMP (*x, root_x, (root_x + widget->allocation.width));
*y = CLAMP (*y, root_y, (root_y + widget->allocation.height));
*x = CLAMP (*x, 0, MAX (0, gdk_screen_width () - req.width));
*y = CLAMP (*y, 0, MAX (0, gdk_screen_height () - req.height));
}
typedef struct
{
GtkTextView *text_view;
gint button;
guint time;
} PopupInfo;
static gboolean
range_contains_editable_text (const GtkTextIter *start,
const GtkTextIter *end,
gboolean default_editability)
{
GtkTextIter iter = *start;
while (gtk_text_iter_compare (&iter, end) < 0)
{
if (gtk_text_iter_editable (&iter, default_editability))
return TRUE;
gtk_text_iter_forward_to_tag_toggle (&iter, NULL);
}
return FALSE;
}
static void
popup_targets_received (GtkClipboard *clipboard,
GtkSelectionData *data,
gpointer user_data)
{
PopupInfo *info = user_data;
GtkTextView *text_view = info->text_view;
if (GTK_WIDGET_REALIZED (text_view))
{
/* We implicitely rely here on the fact that if we are pasting ourself, we'll
* have text targets as well as the private GTK_TEXT_BUFFER_CONTENTS target.
*/
gboolean clipboard_contains_text = gtk_selection_data_targets_include_text (data);
GtkWidget *menuitem;
GtkWidget *submenu;
gboolean have_selection;
gboolean can_insert;
GtkTextIter iter;
GtkTextIter sel_start, sel_end;
if (text_view->popup_menu)
gtk_widget_destroy (text_view->popup_menu);
text_view->popup_menu = gtk_menu_new ();
gtk_menu_attach_to_widget (GTK_MENU (text_view->popup_menu),
GTK_WIDGET (text_view),
popup_menu_detach);
have_selection = gtk_text_buffer_get_selection_bounds (get_buffer (text_view),
&sel_start, &sel_end);
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view),
&iter,
gtk_text_buffer_get_insert (get_buffer (text_view)));
can_insert = gtk_text_iter_can_insert (&iter, text_view->editable);
append_action_signal (text_view, text_view->popup_menu, GTK_STOCK_CUT, "cut_clipboard",
have_selection &&
range_contains_editable_text (&sel_start, &sel_end,
text_view->editable));
append_action_signal (text_view, text_view->popup_menu, GTK_STOCK_COPY, "copy_clipboard",
have_selection);
append_action_signal (text_view, text_view->popup_menu, GTK_STOCK_PASTE, "paste_clipboard",
can_insert && clipboard_contains_text);
menuitem = gtk_separator_menu_item_new ();
gtk_widget_show (menuitem);
gtk_menu_shell_append (GTK_MENU_SHELL (text_view->popup_menu), menuitem);
menuitem = gtk_menu_item_new_with_label (_("Input Methods"));
gtk_widget_show (menuitem);
submenu = gtk_menu_new ();
gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), submenu);
gtk_menu_shell_append (GTK_MENU_SHELL (text_view->popup_menu), menuitem);
gtk_im_multicontext_append_menuitems (GTK_IM_MULTICONTEXT (text_view->im_context),
GTK_MENU_SHELL (submenu));
gtk_signal_emit (GTK_OBJECT (text_view),
signals[POPULATE_POPUP],
text_view->popup_menu);
if (info->button)
gtk_menu_popup (GTK_MENU (text_view->popup_menu), NULL, NULL,
NULL, NULL,
info->button, info->time);
else
gtk_menu_popup (GTK_MENU (text_view->popup_menu), NULL, NULL,
popup_position_func, text_view,
0, gtk_get_current_event_time ());
}
g_object_unref (text_view);
g_free (info);
}
static void
gtk_text_view_do_popup (GtkTextView *text_view,
GdkEventButton *event)
{
PopupInfo *info = g_new (PopupInfo, 1);
/* In order to know what entries we should make sensitive, we
* ask for the current targets of the clipboard, and when
* we get them, then we actually pop up the menu.
*/
info->text_view = g_object_ref (text_view);
if (event)
{
info->button = event->button;
info->time = event->time;
}
else
{
info->button = 0;
info->time = gtk_get_current_event_time ();
}
gtk_clipboard_request_contents (gtk_clipboard_get (GDK_SELECTION_CLIPBOARD),
gdk_atom_intern ("TARGETS", FALSE),
popup_targets_received,
info);
}
static void
gtk_text_view_popup_menu (GtkWidget *widget)
{
gtk_text_view_do_popup (GTK_TEXT_VIEW (widget), NULL);
}
/* Child GdkWindows */
static GtkTextWindow*
text_window_new (GtkTextWindowType type,
GtkWidget *widget,
gint width_request,
gint height_request)
{
GtkTextWindow *win;
win = g_new (GtkTextWindow, 1);
win->type = type;
win->widget = widget;
win->window = NULL;
win->bin_window = NULL;
win->requisition.width = width_request;
win->requisition.height = height_request;
win->allocation.width = width_request;
win->allocation.height = height_request;
win->allocation.x = 0;
win->allocation.y = 0;
return win;
}
static void
text_window_free (GtkTextWindow *win)
{
if (win->window)
text_window_unrealize (win);
g_free (win);
}
static void
text_window_realize (GtkTextWindow *win,
GdkWindow *parent)
{
GdkWindowAttr attributes;
gint attributes_mask;
GdkCursor *cursor;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = win->allocation.x;
attributes.y = win->allocation.y;
attributes.width = win->allocation.width;
attributes.height = win->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (win->widget);
attributes.colormap = gtk_widget_get_colormap (win->widget);
attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
win->window = gdk_window_new (parent,
&attributes,
attributes_mask);
gdk_window_show (win->window);
gdk_window_set_user_data (win->window, win->widget);
attributes.x = 0;
attributes.y = 0;
attributes.width = win->allocation.width;
attributes.height = win->allocation.height;
attributes.event_mask = (GDK_EXPOSURE_MASK |
GDK_SCROLL_MASK |
GDK_KEY_PRESS_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
gtk_widget_get_events (win->widget));
win->bin_window = gdk_window_new (win->window,
&attributes,
attributes_mask);
gdk_window_show (win->bin_window);
gdk_window_set_user_data (win->bin_window, win->widget);
if (win->type == GTK_TEXT_WINDOW_TEXT)
{
/* I-beam cursor */
cursor = gdk_cursor_new (GDK_XTERM);
gdk_window_set_cursor (win->bin_window, cursor);
gdk_cursor_destroy (cursor);
gtk_im_context_set_client_window (GTK_TEXT_VIEW (win->widget)->im_context,
win->window);
gdk_window_set_background (win->bin_window,
&win->widget->style->base[GTK_WIDGET_STATE (win->widget)]);
}
else
{
gdk_window_set_background (win->bin_window,
&win->widget->style->bg[GTK_WIDGET_STATE (win->widget)]);
}
g_object_set_qdata (G_OBJECT (win->window),
g_quark_from_static_string ("gtk-text-view-text-window"),
win);
g_object_set_qdata (G_OBJECT (win->bin_window),
g_quark_from_static_string ("gtk-text-view-text-window"),
win);
}
static void
text_window_unrealize (GtkTextWindow *win)
{
if (win->type == GTK_TEXT_WINDOW_TEXT)
{
gtk_im_context_set_client_window (GTK_TEXT_VIEW (win->widget)->im_context,
NULL);
}
gdk_window_set_user_data (win->window, NULL);
gdk_window_set_user_data (win->bin_window, NULL);
gdk_window_destroy (win->bin_window);
gdk_window_destroy (win->window);
win->window = NULL;
win->bin_window = NULL;
}
static void
text_window_size_allocate (GtkTextWindow *win,
GdkRectangle *rect)
{
win->allocation = *rect;
if (win->window)
{
gdk_window_move_resize (win->window,
rect->x, rect->y,
rect->width, rect->height);
gdk_window_resize (win->bin_window,
rect->width, rect->height);
}
}
static void
text_window_scroll (GtkTextWindow *win,
gint dx,
gint dy)
{
if (dx != 0 || dy != 0)
{
gdk_window_scroll (win->bin_window, dx, dy);
}
}
static void
text_window_invalidate_rect (GtkTextWindow *win,
GdkRectangle *rect)
{
GdkRectangle window_rect;
gtk_text_view_buffer_to_window_coords (GTK_TEXT_VIEW (win->widget),
win->type,
rect->x,
rect->y,
&window_rect.x,
&window_rect.y);
window_rect.width = rect->width;
window_rect.height = rect->height;
/* Adjust the rect as appropriate */
switch (win->type)
{
case GTK_TEXT_WINDOW_TEXT:
break;
case GTK_TEXT_WINDOW_LEFT:
case GTK_TEXT_WINDOW_RIGHT:
window_rect.x = 0;
window_rect.width = win->allocation.width;
break;
case GTK_TEXT_WINDOW_TOP:
case GTK_TEXT_WINDOW_BOTTOM:
window_rect.y = 0;
window_rect.height = win->allocation.height;
break;
default:
g_warning ("%s: bug!", G_STRLOC);
return;
break;
}
gdk_window_invalidate_rect (win->bin_window, &window_rect, FALSE);
#if 0
{
GdkColor color = { 0, 65535, 0, 0 };
GdkGC *gc = gdk_gc_new (win->bin_window);
gdk_gc_set_rgb_fg_color (gc, &color);
gdk_draw_rectangle (win->bin_window,
gc, TRUE, window_rect.x, window_rect.y,
window_rect.width, window_rect.height);
gdk_gc_unref (gc);
}
#endif
}
static gint
text_window_get_width (GtkTextWindow *win)
{
return win->allocation.width;
}
static gint
text_window_get_height (GtkTextWindow *win)
{
return win->allocation.height;
}
static void
text_window_get_allocation (GtkTextWindow *win,
GdkRectangle *rect)
{
*rect = win->allocation;
}
/* Windows */
/**
* gtk_text_view_get_window:
* @text_view: a #GtkTextView
* @win: window to get
*
* Retrieves the #GdkWindow corresponding to an area of the text view;
* possible windows include the overall widget window, child windows
* on the left, right, top, bottom, and the window that displays the
* text buffer. Windows are %NULL and nonexistent if their width or
* height is 0, and are nonexistent before the widget has been
* realized.
*
* Return value: a #GdkWindow, or %NULL
**/
GdkWindow*
gtk_text_view_get_window (GtkTextView *text_view,
GtkTextWindowType win)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
switch (win)
{
case GTK_TEXT_WINDOW_WIDGET:
return GTK_WIDGET (text_view)->window;
break;
case GTK_TEXT_WINDOW_TEXT:
return text_view->text_window->bin_window;
break;
case GTK_TEXT_WINDOW_LEFT:
if (text_view->left_window)
return text_view->left_window->bin_window;
else
return NULL;
break;
case GTK_TEXT_WINDOW_RIGHT:
if (text_view->right_window)
return text_view->right_window->bin_window;
else
return NULL;
break;
case GTK_TEXT_WINDOW_TOP:
if (text_view->top_window)
return text_view->top_window->bin_window;
else
return NULL;
break;
case GTK_TEXT_WINDOW_BOTTOM:
if (text_view->bottom_window)
return text_view->bottom_window->bin_window;
else
return NULL;
break;
default:
g_warning ("%s: Unknown GtkTextWindowType", G_STRLOC);
return NULL;
break;
}
}
/**
* gtk_text_view_get_window_type:
* @text_view: a #GtkTextView
* @window: a window type
*
* Usually used to find out which window an event corresponds to.
* If you connect to an event signal on @text_view, this function
* should be called on <literal>event-&gt;window</literal> to
* see which window it was.
*
* Return value: the window type.
**/
GtkTextWindowType
gtk_text_view_get_window_type (GtkTextView *text_view,
GdkWindow *window)
{
GtkTextWindow *win;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
g_return_val_if_fail (GDK_IS_WINDOW (window), 0);
if (window == GTK_WIDGET (text_view)->window)
return GTK_TEXT_WINDOW_WIDGET;
win = g_object_get_qdata (G_OBJECT (window),
g_quark_try_string ("gtk-text-view-text-window"));
if (win)
return win->type;
else
{
return GTK_TEXT_WINDOW_PRIVATE;
}
}
static void
buffer_to_widget (GtkTextView *text_view,
gint buffer_x,
gint buffer_y,
gint *window_x,
gint *window_y)
{
gint focus_edge_width;
gboolean interior_focus;
gtk_widget_style_get (GTK_WIDGET (text_view), "interior_focus", &interior_focus, NULL);
if (interior_focus)
focus_edge_width = 0;
else
focus_edge_width = 1;
if (window_x)
{
*window_x = buffer_x - text_view->xoffset + focus_edge_width;
if (text_view->left_window)
*window_x += text_view->left_window->allocation.width;
}
if (window_y)
{
*window_y = buffer_y - text_view->yoffset + focus_edge_width;
if (text_view->top_window)
*window_y += text_view->top_window->allocation.height;
}
}
static void
widget_to_text_window (GtkTextWindow *win,
gint widget_x,
gint widget_y,
gint *window_x,
gint *window_y)
{
if (window_x)
*window_x = widget_x - win->allocation.x;
if (window_y)
*window_y = widget_y - win->allocation.y;
}
static void
buffer_to_text_window (GtkTextView *text_view,
GtkTextWindow *win,
gint buffer_x,
gint buffer_y,
gint *window_x,
gint *window_y)
{
if (win == NULL)
{
g_warning ("Attempt to convert text buffer coordinates to coordinates "
"for a nonexistent or private child window of GtkTextView");
return;
}
buffer_to_widget (text_view,
buffer_x, buffer_y,
window_x, window_y);
widget_to_text_window (win,
window_x ? *window_x : 0,
window_y ? *window_y : 0,
window_x,
window_y);
}
/**
* gtk_text_view_buffer_to_window_coords:
* @text_view: a #GtkTextView
* @win: a #GtkTextWindowType
* @buffer_x: buffer x coordinate
* @buffer_y: buffer y coordinate
* @window_x: window x coordinate return location
* @window_y: window y coordinate return location
*
* Converts coordinate (@buffer_x, @buffer_y) to coordinates for the window
* @win, and stores the result in (@window_x, @window_y).
**/
void
gtk_text_view_buffer_to_window_coords (GtkTextView *text_view,
GtkTextWindowType win,
gint buffer_x,
gint buffer_y,
gint *window_x,
gint *window_y)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
switch (win)
{
case GTK_TEXT_WINDOW_WIDGET:
buffer_to_widget (text_view,
buffer_x, buffer_y,
window_x, window_y);
break;
case GTK_TEXT_WINDOW_TEXT:
if (window_x)
*window_x = buffer_x - text_view->xoffset;
if (window_y)
*window_y = buffer_y - text_view->yoffset;
break;
case GTK_TEXT_WINDOW_LEFT:
buffer_to_text_window (text_view,
text_view->left_window,
buffer_x, buffer_y,
window_x, window_y);
break;
case GTK_TEXT_WINDOW_RIGHT:
buffer_to_text_window (text_view,
text_view->right_window,
buffer_x, buffer_y,
window_x, window_y);
break;
case GTK_TEXT_WINDOW_TOP:
buffer_to_text_window (text_view,
text_view->top_window,
buffer_x, buffer_y,
window_x, window_y);
break;
case GTK_TEXT_WINDOW_BOTTOM:
buffer_to_text_window (text_view,
text_view->bottom_window,
buffer_x, buffer_y,
window_x, window_y);
break;
case GTK_TEXT_WINDOW_PRIVATE:
g_warning ("%s: can't get coords for private windows", G_STRLOC);
break;
default:
g_warning ("%s: Unknown GtkTextWindowType", G_STRLOC);
break;
}
}
static void
widget_to_buffer (GtkTextView *text_view,
gint widget_x,
gint widget_y,
gint *buffer_x,
gint *buffer_y)
{
gint focus_edge_width;
gboolean interior_focus;
gtk_widget_style_get (GTK_WIDGET (text_view), "interior_focus", &interior_focus, NULL);
if (interior_focus)
focus_edge_width = 0;
else
focus_edge_width = 1;
if (buffer_x)
{
*buffer_x = widget_x - focus_edge_width + text_view->xoffset;
if (text_view->left_window)
*buffer_x -= text_view->left_window->allocation.width;
}
if (buffer_y)
{
*buffer_y = widget_y - focus_edge_width + text_view->yoffset;
if (text_view->top_window)
*buffer_y -= text_view->top_window->allocation.height;
}
}
static void
text_window_to_widget (GtkTextWindow *win,
gint window_x,
gint window_y,
gint *widget_x,
gint *widget_y)
{
if (widget_x)
*widget_x = window_x + win->allocation.x;
if (widget_y)
*widget_y = window_y + win->allocation.y;
}
static void
text_window_to_buffer (GtkTextView *text_view,
GtkTextWindow *win,
gint window_x,
gint window_y,
gint *buffer_x,
gint *buffer_y)
{
if (win == NULL)
{
g_warning ("Attempt to convert GtkTextView buffer coordinates into "
"coordinates for a nonexistent child window.");
return;
}
text_window_to_widget (win,
window_x,
window_y,
buffer_x,
buffer_y);
widget_to_buffer (text_view,
buffer_x ? *buffer_x : 0,
buffer_y ? *buffer_y : 0,
buffer_x,
buffer_y);
}
/**
* gtk_text_view_window_to_buffer_coords:
* @text_view: a #GtkTextView
* @win: a #GtkTextWindowType
* @window_x: window x coordinate
* @window_y: window y coordinate
* @buffer_x: buffer x coordinate return location
* @buffer_y: buffer y coordinate return location
*
* Converts coordinates on the window identified by @win to buffer
* coordinates, storing the result in (@buffer_x,@buffer_y).
**/
void
gtk_text_view_window_to_buffer_coords (GtkTextView *text_view,
GtkTextWindowType win,
gint window_x,
gint window_y,
gint *buffer_x,
gint *buffer_y)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
switch (win)
{
case GTK_TEXT_WINDOW_WIDGET:
widget_to_buffer (text_view,
window_x, window_y,
buffer_x, buffer_y);
break;
case GTK_TEXT_WINDOW_TEXT:
if (buffer_x)
*buffer_x = window_x + text_view->xoffset;
if (buffer_y)
*buffer_y = window_y + text_view->yoffset;
break;
case GTK_TEXT_WINDOW_LEFT:
text_window_to_buffer (text_view,
text_view->left_window,
window_x, window_y,
buffer_x, buffer_y);
break;
case GTK_TEXT_WINDOW_RIGHT:
text_window_to_buffer (text_view,
text_view->right_window,
window_x, window_y,
buffer_x, buffer_y);
break;
case GTK_TEXT_WINDOW_TOP:
text_window_to_buffer (text_view,
text_view->top_window,
window_x, window_y,
buffer_x, buffer_y);
break;
case GTK_TEXT_WINDOW_BOTTOM:
text_window_to_buffer (text_view,
text_view->bottom_window,
window_x, window_y,
buffer_x, buffer_y);
break;
case GTK_TEXT_WINDOW_PRIVATE:
g_warning ("%s: can't get coords for private windows", G_STRLOC);
break;
default:
g_warning ("%s: Unknown GtkTextWindowType", G_STRLOC);
break;
}
}
static void
set_window_width (GtkTextView *text_view,
gint width,
GtkTextWindowType type,
GtkTextWindow **winp)
{
if (width == 0)
{
if (*winp)
{
text_window_free (*winp);
*winp = NULL;
gtk_widget_queue_resize (GTK_WIDGET (text_view));
}
}
else
{
if (*winp == NULL)
{
*winp = text_window_new (type,
GTK_WIDGET (text_view),
width, 0);
/* if the widget is already realized we need to realize the child manually */
if (GTK_WIDGET_REALIZED (text_view))
text_window_realize (*winp, GTK_WIDGET (text_view)->window);
}
else
{
if ((*winp)->requisition.width == width)
return;
}
gtk_widget_queue_resize (GTK_WIDGET (text_view));
}
}
static void
set_window_height (GtkTextView *text_view,
gint height,
GtkTextWindowType type,
GtkTextWindow **winp)
{
if (height == 0)
{
if (*winp)
{
text_window_free (*winp);
*winp = NULL;
gtk_widget_queue_resize (GTK_WIDGET (text_view));
}
}
else
{
if (*winp == NULL)
{
*winp = text_window_new (type,
GTK_WIDGET (text_view),
0, height);
/* if the widget is already realized we need to realize the child manually */
if (GTK_WIDGET_REALIZED (text_view))
text_window_realize (*winp, GTK_WIDGET (text_view)->window);
}
else
{
if ((*winp)->requisition.height == height)
return;
}
gtk_widget_queue_resize (GTK_WIDGET (text_view));
}
}
/**
* gtk_text_view_set_border_window_size:
* @text_view: a #GtkTextView
* @type: window to affect
* @size: width or height of the window
*
* Sets the width of %GTK_TEXT_WINDOW_LEFT or %GTK_TEXT_WINDOW_RIGHT,
* or the height of %GTK_TEXT_WINDOW_TOP or %GTK_TEXT_WINDOW_BOTTOM.
* Automatically destroys the corresponding window if the size is set
* to 0, and creates the window if the size is set to non-zero. This
* function can only be used for the "border windows," it doesn't work
* with #GTK_TEXT_WINDOW_WIDGET, #GTK_TEXT_WINDOW_TEXT, or
* #GTK_TEXT_WINDOW_PRIVATE.
**/
void
gtk_text_view_set_border_window_size (GtkTextView *text_view,
GtkTextWindowType type,
gint size)
{
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (size >= 0);
switch (type)
{
case GTK_TEXT_WINDOW_LEFT:
set_window_width (text_view, size, GTK_TEXT_WINDOW_LEFT,
&text_view->left_window);
break;
case GTK_TEXT_WINDOW_RIGHT:
set_window_width (text_view, size, GTK_TEXT_WINDOW_RIGHT,
&text_view->right_window);
break;
case GTK_TEXT_WINDOW_TOP:
set_window_height (text_view, size, GTK_TEXT_WINDOW_TOP,
&text_view->top_window);
break;
case GTK_TEXT_WINDOW_BOTTOM:
set_window_height (text_view, size, GTK_TEXT_WINDOW_BOTTOM,
&text_view->bottom_window);
break;
default:
g_warning ("Can only set size of left/right/top/bottom border windows with gtk_text_view_set_border_window_size()");
break;
}
}
/**
* gtk_text_view_get_border_window_size:
* @text_view: a #GtkTextView
* @type: window to return size from
*
* Gets the width of the specified border window. See
* gtk_text_view_set_border_window_size().
*
* Return value: width of window
**/
gint
gtk_text_view_get_border_window_size (GtkTextView *text_view,
GtkTextWindowType type)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0);
switch (type)
{
case GTK_TEXT_WINDOW_LEFT:
if (text_view->left_window)
return text_view->left_window->requisition.width;
case GTK_TEXT_WINDOW_RIGHT:
if (text_view->right_window)
return text_view->right_window->requisition.width;
case GTK_TEXT_WINDOW_TOP:
if (text_view->top_window)
return text_view->top_window->requisition.height;
case GTK_TEXT_WINDOW_BOTTOM:
if (text_view->bottom_window)
return text_view->bottom_window->requisition.height;
default:
g_warning ("Can only get size of left/right/top/bottom border windows with gtk_text_view_get_border_window_size()");
break;
}
return 0;
}
/*
* Child widgets
*/
static GtkTextViewChild*
text_view_child_new_anchored (GtkWidget *child,
GtkTextChildAnchor *anchor,
GtkTextLayout *layout)
{
GtkTextViewChild *vc;
vc = g_new (GtkTextViewChild, 1);
vc->widget = child;
vc->anchor = anchor;
vc->from_top_of_line = 0;
vc->from_left_of_buffer = 0;
g_object_ref (G_OBJECT (vc->widget));
g_object_ref (G_OBJECT (vc->anchor));
g_object_set_data (G_OBJECT (child),
"gtk-text-view-child",
vc);
gtk_text_child_anchor_register_child (anchor, child, layout);
return vc;
}
static GtkTextViewChild*
text_view_child_new_window (GtkWidget *child,
GtkTextWindowType type,
gint x,
gint y)
{
GtkTextViewChild *vc;
vc = g_new (GtkTextViewChild, 1);
vc->widget = child;
vc->anchor = NULL;
vc->from_top_of_line = 0;
vc->from_left_of_buffer = 0;
g_object_ref (G_OBJECT (vc->widget));
vc->type = type;
vc->x = x;
vc->y = y;
return vc;
}
static void
text_view_child_free (GtkTextViewChild *child)
{
g_object_set_data (G_OBJECT (child->widget),
"gtk-text-view-child", NULL);
if (child->anchor)
{
gtk_text_child_anchor_unregister_child (child->anchor,
child->widget);
g_object_unref (G_OBJECT (child->anchor));
}
g_object_unref (G_OBJECT (child->widget));
g_free (child);
}
static void
text_view_child_set_parent_window (GtkTextView *text_view,
GtkTextViewChild *vc)
{
if (vc->anchor)
gtk_widget_set_parent_window (vc->widget,
text_view->text_window->bin_window);
else
{
GdkWindow *window;
window = gtk_text_view_get_window (text_view,
vc->type);
gtk_widget_set_parent_window (vc->widget, window);
}
}
static void
add_child (GtkTextView *text_view,
GtkTextViewChild *vc)
{
text_view->children = g_slist_prepend (text_view->children,
vc);
if (GTK_WIDGET_REALIZED (text_view))
text_view_child_set_parent_window (text_view, vc);
gtk_widget_set_parent (vc->widget, GTK_WIDGET (text_view));
}
void
gtk_text_view_add_child_at_anchor (GtkTextView *text_view,
GtkWidget *child,
GtkTextChildAnchor *anchor)
{
GtkTextViewChild *vc;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor));
g_return_if_fail (child->parent == NULL);
gtk_text_view_ensure_layout (text_view);
vc = text_view_child_new_anchored (child, anchor,
text_view->layout);
add_child (text_view, vc);
}
void
gtk_text_view_add_child_in_window (GtkTextView *text_view,
GtkWidget *child,
GtkTextWindowType which_window,
gint xpos,
gint ypos)
{
GtkTextViewChild *vc;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (xpos >= 0);
g_return_if_fail (ypos >= 0);
g_return_if_fail (child->parent == NULL);
vc = text_view_child_new_window (child, which_window,
xpos, ypos);
add_child (text_view, vc);
}
void
gtk_text_view_move_child (GtkTextView *text_view,
GtkWidget *child,
gint xpos,
gint ypos)
{
GtkTextViewChild *vc;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (xpos >= 0);
g_return_if_fail (ypos >= 0);
g_return_if_fail (child->parent == (GtkWidget*) text_view);
vc = g_object_get_data (G_OBJECT (child),
"gtk-text-view-child");
g_assert (vc != NULL);
vc->x = xpos;
vc->y = ypos;
if (GTK_WIDGET_VISIBLE (child) && GTK_WIDGET_VISIBLE (text_view))
gtk_widget_queue_resize (child);
}
/* Iterator operations */
gboolean
gtk_text_view_forward_display_line (GtkTextView *text_view,
GtkTextIter *iter)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_move_iter_to_next_line (text_view->layout, iter);
}
gboolean
gtk_text_view_backward_display_line (GtkTextView *text_view,
GtkTextIter *iter)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_move_iter_to_previous_line (text_view->layout, iter);
}
gboolean
gtk_text_view_forward_display_line_end (GtkTextView *text_view,
GtkTextIter *iter)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_move_iter_to_line_end (text_view->layout, iter, 1);
}
gboolean
gtk_text_view_backward_display_line_start (GtkTextView *text_view,
GtkTextIter *iter)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_move_iter_to_line_end (text_view->layout, iter, -1);
}
gboolean
gtk_text_view_starts_display_line (GtkTextView *text_view,
const GtkTextIter *iter)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_iter_starts_line (text_view->layout, iter);
}
gboolean
gtk_text_view_move_visually (GtkTextView *text_view,
GtkTextIter *iter,
gint count)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (iter != NULL, FALSE);
gtk_text_view_ensure_layout (text_view);
return gtk_text_layout_move_iter_visually (text_view->layout, iter, count);
}
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