AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
49631b2900
gtk2/gtk/gtktextview.c
Tim Janik d69496c060 urg, removed implementation of gtk_marshal_VOID__INT_INT_INT_INT. if 
Wed Oct 25 20:47:41 2000  Tim Janik  <timj@gtk.org>

        * gtk/gdk-pixbuf-loader.c (gdk_pixbuf_loader_class_init): urg, removed
        implementation of gtk_marshal_VOID__INT_INT_INT_INT. if people do that,
        couldn't they at least give it a non-standard name?

        * gtk/gtktextlayout.c: arg! yet another implementation of
        gtk_marshal_VOID__INT_INT_INT_INT(), is this a conspiracy?

        * gtk/gtktextbuffer.c: gotcha! captured a vagabonding
        gtk_marshal_VOID__INT_POINTER_INT() implementation, braught it back
        home. now i know this _is_ a conspiracy.

        * gtk/gtkwidget.c (gtk_widget_class_init): marshaller fixups for
        ::state-changed.

        * gtk/gtkaccelgroup.c (gtk_accel_group_create_remove):
        (gtk_accel_group_create_add): marshaller signature fixups.

        * gtk/gtklistitem.c (gtk_list_item_class_init): signal creation fixups,
        pass in GTK_TYPE_SCROLL_TYPE instead of GTK_TYPE_ENUM.

        * gtk/gtkobject.[hc]: removed GTK_CONNECTED flag, it's not valid
        anymore.

Tue Oct 24 23:59:21 2000  Tim Janik  <timj@gtk.org>

        * docs/reference/Makefile.am: disabled SUBDIRS for the moment, since
        due to the signal system changes, it wouldn't build currently. to
        be fixed soon.

        * docs/Changes-2.0.txt: GtkSignal/GSignal updates.

        * gtk/gtkwidget.c: ::direction_changed takes an enum as argument,
        so it needs gtk_marshal_VOID__ENUM() instead of
        gtk_marshal_NONE__UINT().

        * gdk/gdk*.c: adapted type registration functions.

        * gtk/gtkbindings.c:
        * gtk/gtkaccelgroup.c: operate on GSignalQuery, GtkSignalQuery is
        gone.

        * gtk/gtkenums.h: define GtkSignalRunType in terms of GSignalType.

        * gtk/gtkobject.c:
        (gtk_object_destroy):
        (gtk_object_shutdown): fixed recursion guards. basically we have to
        catch the case where any of GObject.shutdown() or gtk_object_destroy()
        is called during ::destroy, and avoid recursion there.

        * gtk/gtktypeutils.c:
        * gtk/maketypes.awk: awk-script hackup to provide gtk_type_init() with
        boxed_copy/boxed_free. this needs a more general solution based on a
        publically installed code-generator utility.

        * gtk/gtktypeutils.[hc]: compat aliased GTK_TYPE_BOXED to G_TYPE_BOXED,
        glib's gobject has support for that now.
        define GtkSignalMarshaller in terms of GSignalCMarshaller.


Mon Oct 23 09:36:42 2000  Tim Janik  <timj@gtk.org>

        * gtk/gtksignal.[hc]:
        * gtk/gtkmarshal.[hc]:
        * gtk/Makefile.am: generate marshallers with glib-genmarshal and don't
        compile gtkmarshal.c on its own anymore, just include it in gtksignal.c.
        removed #include <gtkmarshal.h>s all over the place, gtksignal.h takes
        care of that.

        * *.c: marshaller name fixups.

        * gtk/gtkmarshal.list: added a comment briefing the format.

Sun Oct 22 23:14:39 2000  Tim Janik  <timj@gtk.org>

        * gtk/gtksignal.[hc]: nuked old implementation. we mostly have
        compatibility macros here now. more specifically, most of
        the API is preserved (yes, _most_, nonwithstanding the
        following exceptions listed, the API is stil lHUGE ;)
        things that got removed completely:
        GtkSignalQuery, gtk_signal_query(), gtk_signal_n_emissions(),
        gtk_signal_n_emissions_by_name(), gtk_signal_handlers_destroy(),
        gtk_signal_set_funcs(), gtk_signal_handler_pending_by_id(),
        gtk_signal_add_emission_hook(), gtk_signal_add_emission_hook_full(),
        gtk_signal_remove_emission_hook().
        non-functional functions variants:
        gtk_signal_add_emission_hook(), gtk_signal_remove_emission_hook().
        the GtkCallbackMarshal argument to gtk_signal_connect_full() is
        not supported anymore.
        (gtk_signal_compat_matched): new internal function to aid
        implementation of the compatibility macros, it  provides
        functionality to block/unblock/disconnect handlers based
        on func/data.

        * gtk/gtkenums.h: define GtkSignalRunType in terms of GSignalType,

        * *.c: adaptions to new type registration API signatures.


Fri Oct 20 15:26:33 2000  Tim Janik  <timj@gtk.org>

        * gtk/gtktypeutils.[hc]: removed G_TYPE_GTK_POINTER cludge.
2000-10-25 22:34:14 +00:00

4354 lines
125 KiB
C
Raw Blame History

/* 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>
#include "gtkbindings.h"
#include "gtkdnd.h"
#include "gtkmain.h"
#include "gtksignal.h"
#include "gtktext.h"
#include "gtktextdisplay.h"
#include "gtktextview.h"
#include "gtkimmulticontext.h"
#include "gdk/gdkkeysyms.h"
#include "gtktexttypes.h"
#include <string.h>
#define FOCUS_EDGE_WIDTH 1
#define DRAG_THRESHOLD 8
#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)
enum {
MOVE,
SET_ANCHOR,
INSERT,
DELETE,
CUT_CLIPBOARD,
COPY_CLIPBOARD,
PASTE_CLIPBOARD,
TOGGLE_OVERWRITE,
SET_SCROLL_ADJUSTMENTS,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_HEIGHT_LINES,
ARG_WIDTH_COLUMNS,
ARG_PIXELS_ABOVE_LINES,
ARG_PIXELS_BELOW_LINES,
ARG_PIXELS_INSIDE_WRAP,
ARG_EDITABLE,
ARG_WRAP_MODE,
LAST_ARG
};
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_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_text_view_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
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 void gtk_text_view_draw (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_text_view_expose_event (GtkWidget *widget,
GdkEventExpose *expose);
static void gtk_text_view_draw_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_move (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 (GtkTextView *text_view,
const gchar *str);
static void gtk_text_view_delete (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_scroll_calc_now (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_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_start_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_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);
/* 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;
/* These are ignored if anchor != NULL */
GtkTextWindowType type;
gint x;
gint y;
};
static GtkTextViewChild* text_view_child_new_anchored (GtkWidget *child,
GtkTextChildAnchor *anchor);
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_realize (GtkTextView *text_view,
GtkTextViewChild *child);
static void text_view_child_unrealize (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
};
static GtkTargetEntry target_table[] = {
{ "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", 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", 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);
/*
* Arguments
*/
gtk_object_add_arg_type ("GtkTextView::height_lines", GTK_TYPE_INT,
GTK_ARG_READWRITE, ARG_HEIGHT_LINES);
gtk_object_add_arg_type ("GtkTextView::width_columns", GTK_TYPE_INT,
GTK_ARG_READWRITE, ARG_WIDTH_COLUMNS);
gtk_object_add_arg_type ("GtkTextView::pixels_above_lines", GTK_TYPE_INT,
GTK_ARG_READWRITE, ARG_PIXELS_ABOVE_LINES);
gtk_object_add_arg_type ("GtkTextView::pixels_below_lines", GTK_TYPE_INT,
GTK_ARG_READWRITE, ARG_PIXELS_BELOW_LINES);
gtk_object_add_arg_type ("GtkTextView::pixels_inside_wrap", GTK_TYPE_INT,
GTK_ARG_READWRITE, ARG_PIXELS_INSIDE_WRAP);
gtk_object_add_arg_type ("GtkTextView::editable", GTK_TYPE_BOOL,
GTK_ARG_READWRITE, ARG_EDITABLE);
gtk_object_add_arg_type ("GtkTextView::wrap_mode", GTK_TYPE_ENUM,
GTK_ARG_READWRITE, ARG_WRAP_MODE);
/*
* Signals
*/
signals[MOVE] =
gtk_signal_new ("move",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, move),
gtk_marshal_VOID__INT_INT_INT,
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] =
gtk_signal_new ("insert",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, insert),
gtk_marshal_VOID__POINTER,
GTK_TYPE_NONE, 1, GTK_TYPE_STRING);
signals[DELETE] =
gtk_signal_new ("delete",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, delete),
gtk_marshal_VOID__INT_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] = widget_class->set_scroll_adjustments_signal =
gtk_signal_new ("set_scroll_adjustments",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTextViewClass, set_scroll_adjustments),
gtk_marshal_VOID__POINTER_POINTER,
GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
/*
* Key bindings
*/
binding_set = gtk_binding_set_by_class (klass);
/* Moving the insertion point */
add_move_binding (binding_set, GDK_Right, 0,
GTK_MOVEMENT_POSITIONS, 1);
add_move_binding (binding_set, GDK_Left, 0,
GTK_MOVEMENT_POSITIONS, -1);
add_move_binding (binding_set, GDK_f, GDK_CONTROL_MASK,
GTK_MOVEMENT_CHARS, 1);
add_move_binding (binding_set, GDK_b, GDK_CONTROL_MASK,
GTK_MOVEMENT_CHARS, -1);
add_move_binding (binding_set, GDK_Right, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, 1);
add_move_binding (binding_set, GDK_Left, GDK_CONTROL_MASK,
GTK_MOVEMENT_WORDS, -1);
/* 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_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_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_End, 0,
GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
add_move_binding (binding_set, GDK_Home, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, -1);
add_move_binding (binding_set, GDK_End, GDK_CONTROL_MASK,
GTK_MOVEMENT_BUFFER_ENDS, 1);
add_move_binding (binding_set, GDK_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
add_move_binding (binding_set, GDK_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);
/* Deleting text */
gtk_binding_entry_add_signal (binding_set, GDK_Delete, 0,
"delete", 2,
GTK_TYPE_ENUM, GTK_DELETE_CHARS,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_d, GDK_CONTROL_MASK,
"delete", 2,
GTK_TYPE_ENUM, GTK_DELETE_CHARS,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0,
"delete", 2,
GTK_TYPE_ENUM, GTK_DELETE_CHARS,
GTK_TYPE_INT, -1);
gtk_binding_entry_add_signal (binding_set, GDK_Delete, GDK_CONTROL_MASK,
"delete", 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", 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", 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", 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", 2,
GTK_TYPE_ENUM, GTK_DELETE_PARAGRAPHS,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_MOD1_MASK,
"delete", 2,
GTK_TYPE_ENUM, GTK_DELETE_WHITESPACE,
GTK_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_MOD1_MASK,
"insert", 1,
GTK_TYPE_STRING, " ");
gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_MOD1_MASK,
"delete", 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);
/*
* Default handlers and virtual methods
*/
object_class->set_arg = gtk_text_view_set_arg;
object_class->get_arg = gtk_text_view_get_arg;
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->draw = gtk_text_view_draw;
widget_class->draw_focus = gtk_text_view_draw_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;
container_class->add = gtk_text_view_add;
container_class->remove = gtk_text_view_remove;
container_class->forall = gtk_text_view_forall;
klass->move = gtk_text_view_move;
klass->set_anchor = gtk_text_view_set_anchor;
klass->insert = gtk_text_view_insert;
klass->delete = gtk_text_view_delete;
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;
}
void
gtk_text_view_init (GtkTextView *text_view)
{
GtkWidget *widget;
widget = GTK_WIDGET (text_view);
GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS);
text_view->wrap_mode = GTK_WRAPMODE_NONE;
gtk_drag_dest_set (widget,
GTK_DEST_DEFAULT_DROP,
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 ();
gtk_signal_connect (GTK_OBJECT (text_view->im_context), "commit",
GTK_SIGNAL_FUNC (gtk_text_view_commit_handler), text_view);
text_view->editable = TRUE;
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;
}
GtkWidget*
gtk_text_view_new (void)
{
return GTK_WIDGET (gtk_type_new (gtk_text_view_get_type ()));
}
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);
}
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)
{
gtk_signal_disconnect_by_func (GTK_OBJECT (text_view->buffer),
gtk_text_view_mark_set_handler, text_view);
gtk_object_unref (GTK_OBJECT (text_view->buffer));
text_view->dnd_mark = NULL;
}
text_view->buffer = buffer;
if (buffer != NULL)
{
GtkTextIter start;
gtk_object_ref (GTK_OBJECT (buffer));
gtk_object_sink (GTK_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;
gtk_signal_connect (GTK_OBJECT (text_view->buffer), "mark_set",
gtk_text_view_mark_set_handler, text_view);
}
if (GTK_WIDGET_VISIBLE (text_view))
gtk_widget_queue_draw (GTK_WIDGET (text_view));
}
GtkTextBuffer*
gtk_text_view_get_buffer (GtkTextView *text_view)
{
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL);
return text_view->buffer;
}
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);
}
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) == text_view->buffer);
gtk_text_layout_get_iter_location (text_view->layout, iter, location);
}
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) == text_view->buffer);
gtk_text_layout_get_line_yrange (text_view->layout,
iter,
y,
height);
}
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 void
set_adjustment_clamped (GtkAdjustment *adj, gfloat 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;
gtk_adjustment_set_value (adj, val);
}
gboolean
gtk_text_view_scroll_to_mark_adjusted (GtkTextView *text_view,
GtkTextMark *mark,
gint margin,
gfloat percentage)
{
GtkTextIter iter;
GdkRectangle rect;
GdkRectangle screen;
gint screen_bottom;
gint screen_right;
GtkWidget *widget;
gboolean retval = FALSE;
gint scroll_inc;
gint current_x_scroll, current_y_scroll;
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE);
g_return_val_if_fail (mark != NULL, FALSE);
widget = GTK_WIDGET (text_view);
if (!GTK_WIDGET_MAPPED (widget))
{
g_warning ("FIXME need to implement scroll_to_mark for unmapped GtkTextView?");
return FALSE;
}
gtk_text_buffer_get_iter_at_mark (text_view->buffer, &iter, mark);
gtk_text_layout_get_iter_location (text_view->layout,
&iter,
&rect);
/* Be sure the scroll region is up-to-date */
gtk_text_view_scroll_calc_now (text_view);
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);
{
/* Clamp margin so it's not too large. */
gint small_dimension = MIN (screen.width, screen.height);
gint max_rect_dim;
if (margin > (small_dimension/2 - 5)) /* 5 is arbitrary */
margin = (small_dimension/2 - 5);
if (margin < 0)
margin = 0;
/* make sure rectangle fits in the leftover space */
max_rect_dim = MAX (rect.width, rect.height);
if (max_rect_dim > (small_dimension - margin*2))
margin -= max_rect_dim - (small_dimension - margin*2);
if (margin < 0)
margin = 0;
}
g_assert (margin >= 0);
screen.x += margin;
screen.y += margin;
screen.width -= margin*2;
screen.height -= margin*2;
screen_bottom = screen.y + screen.height;
screen_right = screen.x + screen.width;
/* Vertical scroll (only vertical gets adjusted) */
scroll_inc = 0;
if (rect.y < screen.y)
{
gint scroll_dest = rect.y;
scroll_inc = (scroll_dest - screen.y) * percentage;
}
else if ((rect.y + rect.height) > screen_bottom)
{
gint scroll_dest = rect.y + rect.height;
scroll_inc = (scroll_dest - screen_bottom) * percentage;
}
if (scroll_inc != 0)
{
set_adjustment_clamped (get_vadjustment (text_view),
current_y_scroll + scroll_inc);
retval = TRUE;
}
/* Horizontal scroll */
scroll_inc = 0;
if (rect.x < screen.x)
{
gint scroll_dest = rect.x;
scroll_inc = scroll_dest - screen.x;
}
else if ((rect.x + rect.width) > screen_right)
{
gint scroll_dest = rect.x + rect.width;
scroll_inc = scroll_dest - screen_right;
}
if (scroll_inc != 0)
{
set_adjustment_clamped (get_hadjustment (text_view),
current_x_scroll + scroll_inc);
retval = TRUE;
}
return retval;
}
gboolean
gtk_text_view_scroll_to_mark (GtkTextView *text_view,
GtkTextMark *mark,
gint mark_within_margin)
{
g_return_val_if_fail (mark_within_margin >= 0, FALSE);
return gtk_text_view_scroll_to_mark_adjusted (text_view, mark,
mark_within_margin, 1.0);
}
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);
}
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 (text_view->buffer, &iter, mark);
if (clamp_iter_onscreen (text_view, &iter))
{
gtk_text_buffer_move_mark (text_view->buffer, mark, &iter);
return TRUE;
}
else
return FALSE;
}
void
gtk_text_view_get_visible_rect (GtkTextView *text_view,
GdkRectangle *visible_rect)
{
GtkWidget *widget;
g_return_if_fail (text_view != NULL);
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);
}
}
void
gtk_text_view_set_wrap_mode (GtkTextView *text_view,
GtkWrapMode wrap_mode)
{
g_return_if_fail (text_view != NULL);
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);
}
}
}
GtkWrapMode
gtk_text_view_get_wrap_mode (GtkTextView *text_view)
{
g_return_val_if_fail (text_view != NULL, GTK_WRAPMODE_NONE);
g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), GTK_WRAPMODE_NONE);
return text_view->wrap_mode;
}
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);
}
}
}
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_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);
if (setting)
gtk_text_view_start_cursor_blink (text_view);
else
gtk_text_view_stop_cursor_blink (text_view);
}
}
}
}
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;
}
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 (text_view->buffer, &insert,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"));
if (clamp_iter_onscreen (text_view, &insert))
{
gtk_text_buffer_place_cursor (text_view->buffer, &insert);
return TRUE;
}
else
return FALSE;
}
static void
gtk_text_view_destroy (GtkObject *object)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (object);
gtk_text_view_destroy_layout (text_view);
gtk_text_view_set_buffer (text_view, NULL);
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
gtk_text_view_finalize (GObject *object)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (object);
if (text_view->hadjustment)
gtk_object_unref (GTK_OBJECT (text_view->hadjustment));
if (text_view->vadjustment)
gtk_object_unref (GTK_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);
gtk_object_unref (GTK_OBJECT (text_view->im_context));
(* G_OBJECT_CLASS (parent_class)->finalize) (object);
}
static void
gtk_text_view_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (object);
switch (arg_id)
{
case ARG_HEIGHT_LINES:
break;
case ARG_WIDTH_COLUMNS:
break;
case ARG_PIXELS_ABOVE_LINES:
break;
case ARG_PIXELS_BELOW_LINES:
break;
case ARG_PIXELS_INSIDE_WRAP:
break;
case ARG_EDITABLE:
break;
case ARG_WRAP_MODE:
break;
default:
g_assert_not_reached ();
break;
}
}
static void
gtk_text_view_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (object);
switch (arg_id)
{
case ARG_HEIGHT_LINES:
break;
case ARG_WIDTH_COLUMNS:
break;
case ARG_PIXELS_ABOVE_LINES:
break;
case ARG_PIXELS_BELOW_LINES:
break;
case ARG_PIXELS_INSIDE_WRAP:
break;
case ARG_EDITABLE:
break;
case ARG_WRAP_MODE:
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
static void
gtk_text_view_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
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;
}
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;
text_view = GTK_TEXT_VIEW (widget);
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.
*/
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_ensure_layout (text_view);
gtk_text_layout_set_screen_width (text_view->layout,
SCREEN_WIDTH (text_view));
gtk_text_view_validate_onscreen (text_view);
gtk_text_view_scroll_calc_now (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);
}
static void
gtk_text_view_get_first_para_iter (GtkTextView *text_view,
GtkTextIter *iter)
{
gtk_text_buffer_get_iter_at_mark (text_view->buffer, iter,
text_view->first_para_mark);
}
static void
gtk_text_view_validate_onscreen (GtkTextView *text_view)
{
GtkWidget *widget = GTK_WIDGET (text_view);
if (SCREEN_HEIGHT (widget) > 0)
{
GtkTextIter first_para;
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));
}
}
static gboolean
first_validate_callback (gpointer data)
{
GtkTextView *text_view = data;
gtk_text_view_validate_onscreen (text_view);
text_view->first_validate_idle = 0;
return FALSE;
}
static gboolean
incremental_validate_callback (gpointer data)
{
GtkTextView *text_view = data;
gtk_text_layout_validate (text_view->layout, 2000);
if (gtk_text_layout_is_valid (text_view->layout))
{
text_view->incremental_validate_idle = 0;
return FALSE;
}
else
return TRUE;
}
static void
invalidated_handler (GtkTextLayout *layout,
gpointer data)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (data);
if (!text_view->first_validate_idle)
text_view->first_validate_idle = g_idle_add_full (GTK_PRIORITY_RESIZE - 1, first_validate_callback, text_view, NULL);
if (!text_view->incremental_validate_idle)
text_view->incremental_validate_idle = g_idle_add_full (GDK_PRIORITY_REDRAW + 1, incremental_validate_callback, text_view, NULL);
}
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);
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))
{
redraw_rect.y -= text_view->yoffset;
text_window_invalidate_rect (text_view->text_window,
&redraw_rect);
}
}
if (old_height != new_height)
{
gboolean yoffset_changed = FALSE;
if (start_y + old_height <= text_view->yoffset - text_view->first_para_pixels)
{
text_view->yoffset += new_height - old_height;
get_vadjustment (text_view)->value = text_view->yoffset;
yoffset_changed = TRUE;
}
gtk_text_view_scroll_calc_now (text_view);
if (yoffset_changed)
gtk_adjustment_value_changed (get_vadjustment (text_view));
}
}
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_ensure_layout (text_view);
}
static void
gtk_text_view_unrealize (GtkWidget *widget)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
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;
}
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_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;
gint retval = FALSE;
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
tags = gtk_text_buffer_get_tags (text_view->buffer, iter);
tmp = tags;
while (tmp != NULL)
{
GtkTextTag *tag = tmp->data;
if (gtk_text_tag_event (tag, GTK_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 ||
text_view->buffer == 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 (text_view->buffer,
"insert");
gtk_text_buffer_get_iter_at_mark (text_view->buffer, &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)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
if (text_view->layout == NULL ||
text_view->buffer == NULL)
return FALSE;
if (GTK_WIDGET_CLASS (parent_class)->key_press_event &&
GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event))
return TRUE;
if (event->window != text_view->text_window->bin_window)
return FALSE;
if (gtk_im_context_filter_keypress (text_view->im_context, event))
return TRUE;
else if (event->keyval == GDK_Return)
{
gtk_text_buffer_insert_interactive_at_cursor (text_view->buffer, "\n", 1,
text_view->editable);
gtk_text_view_scroll_to_mark (text_view,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"),
0);
return TRUE;
}
/* Pass through Tab as literal tab, unless Control is held down */
else if (event->keyval == GDK_Tab && !(event->state & GDK_CONTROL_MASK))
{
gtk_text_buffer_insert_interactive_at_cursor (text_view->buffer, "\t", 1,
text_view->editable);
gtk_text_view_scroll_to_mark (text_view,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"),
0);
return TRUE;
}
else
return FALSE;
}
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);
gtk_widget_grab_focus (widget);
if (event->window != text_view->text_window->bin_window)
{
/* Remove selection if any. */
gtk_text_view_unselect (text_view);
return FALSE;
}
/* 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);
if (event->type == GDK_BUTTON_PRESS)
{
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 (text_view->buffer,
&start, &end) &&
gtk_text_iter_in_range (&iter, &start, &end))
{
text_view->drag_start_x = event->x;
text_view->drag_start_y = event->y;
}
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_primary (text_view->buffer,
&iter,
text_view->editable);
return TRUE;
}
else if (event->button == 3)
{
if (gtk_text_view_end_selection_drag (text_view, event))
return TRUE;
else
return FALSE;
}
}
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
{
/* Unselect everything; probably we were dragging, or clicked
* outside the text.
*/
gtk_text_view_unselect (text_view);
return FALSE;
}
}
return FALSE;
}
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_draw_focus (widget);
if (text_view->cursor_visible && text_view->layout)
{
gtk_text_layout_set_cursor_visible (text_view->layout, TRUE);
gtk_text_view_start_cursor_blink (text_view);
}
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_draw_focus (widget);
if (text_view->cursor_visible && text_view->layout)
{
gtk_text_layout_set_cursor_visible (text_view->layout, FALSE);
gtk_text_view_stop_cursor_blink (text_view);
}
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;
gint dx, dy;
gdk_window_get_pointer (text_view->text_window->bin_window,
&x, &y, NULL);
dx = text_view->drag_start_x - x;
dy = text_view->drag_start_y - y;
if (ABS (dx) > DRAG_THRESHOLD ||
ABS (dy) > DRAG_THRESHOLD)
{
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);
gtk_text_view_validate_onscreen (text_view);
#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->xoffset,
text_view->yoffset,
area->x, area->y,
area->width, area->height);
}
static void
send_expose (GtkTextView *text_view,
GtkTextWindow *win,
GdkRectangle *area)
{
GdkEventExpose event;
event.type = GDK_EXPOSE;
event.send_event = TRUE;
event.window = win->bin_window;
event.area = *area;
event.count = 0;
/* Fix coordinates (convert widget coords to window coords) */
gtk_text_view_window_to_buffer_coords (text_view,
GTK_TEXT_WINDOW_WIDGET,
event.area.x,
event.area.y,
&event.area.x,
&event.area.y);
gtk_text_view_buffer_to_window_coords (text_view,
win->type,
event.area.x,
event.area.y,
&event.area.x,
&event.area.y);
gdk_window_ref (event.window);
gtk_widget_event (GTK_WIDGET (text_view), (GdkEvent*) &event);
gdk_window_unref (event.window);
}
static void
gtk_text_view_draw (GtkWidget *widget, GdkRectangle *area)
{
GdkRectangle intersection;
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
gtk_text_view_paint (widget, area);
/* If the area overlaps the "edge" of the widget, draw the focus
* rectangle
*/
if (area->x < FOCUS_EDGE_WIDTH ||
area->y < FOCUS_EDGE_WIDTH ||
(area->x + area->width) > (widget->allocation.width - FOCUS_EDGE_WIDTH) ||
(area->y + area->height) > (widget->allocation.height - FOCUS_EDGE_WIDTH))
gtk_widget_draw_focus (widget);
/* Synthesize expose events for the user-drawn border windows,
* just as we would for a drawing area.
*/
if (text_view->left_window &&
gdk_rectangle_intersect (area, &text_view->left_window->allocation,
&intersection))
send_expose (text_view, text_view->left_window, &intersection);
if (text_view->right_window &&
gdk_rectangle_intersect (area, &text_view->right_window->allocation,
&intersection))
send_expose (text_view, text_view->right_window, &intersection);
if (text_view->top_window &&
gdk_rectangle_intersect (area, &text_view->top_window->allocation,
&intersection))
send_expose (text_view, text_view->top_window, &intersection);
if (text_view->bottom_window &&
gdk_rectangle_intersect (area, &text_view->bottom_window->allocation,
&intersection))
send_expose (text_view, text_view->bottom_window, &intersection);
}
static gint
gtk_text_view_expose_event (GtkWidget *widget, GdkEventExpose *event)
{
if (event->window == gtk_text_view_get_window (GTK_TEXT_VIEW (widget),
GTK_TEXT_WINDOW_TEXT))
gtk_text_view_paint (widget, &event->area);
if (event->window == widget->window)
gtk_widget_draw_focus (widget);
return TRUE;
}
static void
gtk_text_view_draw_focus (GtkWidget *widget)
{
if (GTK_WIDGET_DRAWABLE (widget))
{
if (GTK_WIDGET_HAS_FOCUS (widget))
{
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);
}
}
}
/*
* 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);
}
}
/*
* Blink!
*/
static gint
blink_cb (gpointer data)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (data);
g_assert (text_view->layout && GTK_WIDGET_HAS_FOCUS (text_view) && text_view->cursor_visible);
gtk_text_layout_set_cursor_visible (text_view->layout,
!gtk_text_layout_get_cursor_visible (text_view->layout));
return TRUE;
}
static void
gtk_text_view_start_cursor_blink (GtkTextView *text_view)
{
if (text_view->blink_timeout != 0)
return;
text_view->blink_timeout = gtk_timeout_add (500, blink_cb, text_view);
}
static void
gtk_text_view_stop_cursor_blink (GtkTextView *text_view)
{
if (text_view->blink_timeout == 0)
return;
gtk_timeout_remove (text_view->blink_timeout);
text_view->blink_timeout = 0;
}
/*
* 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 (GtkTextView *text_view,
GtkMovementStep step,
gint count,
gboolean extend_selection)
{
GtkTextIter insert;
GtkTextIter newplace;
gint cursor_x_pos = 0;
if (step == GTK_MOVEMENT_PAGES)
{
gtk_text_view_scroll_pages (text_view, count);
return;
}
gtk_text_buffer_get_iter_at_mark (text_view->buffer, &insert,
gtk_text_buffer_get_mark (text_view->buffer,
"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_CHARS:
gtk_text_iter_forward_chars (&newplace, count);
break;
case GTK_MOVEMENT_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:
/* This should almost certainly instead be doing the parallel thing to WORD */
/* gtk_text_iter_down_lines (&newplace, count); */
/* FIXME */
break;
case GTK_MOVEMENT_PARAGRAPH_ENDS:
if (count > 0)
gtk_text_iter_forward_to_newline (&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_last_iter (text_view->buffer, &newplace);
else if (count < 0)
gtk_text_buffer_get_iter_at_offset (text_view->buffer, &newplace, 0);
break;
default:
break;
}
if (!gtk_text_iter_equal (&insert, &newplace))
{
if (extend_selection)
gtk_text_buffer_move_mark (text_view->buffer,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"),
&newplace);
else
gtk_text_buffer_place_cursor (text_view->buffer, &newplace);
gtk_text_view_scroll_to_mark (text_view,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"), 0);
if (step == GTK_MOVEMENT_DISPLAY_LINES)
{
gtk_text_view_set_virtual_cursor_pos (text_view, cursor_x_pos, -1);
}
}
}
static void
gtk_text_view_set_anchor (GtkTextView *text_view)
{
GtkTextIter insert;
gtk_text_buffer_get_iter_at_mark (text_view->buffer, &insert,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"));
gtk_text_buffer_create_mark (text_view->buffer, "anchor", &insert, TRUE);
}
static void
gtk_text_view_scroll_pages (GtkTextView *text_view,
gint count)
{
gfloat 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);
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 (text_view->buffer, &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.
*/
gtk_text_view_scroll_to_mark (text_view,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"),
0);
}
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))
gtk_text_iter_next_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);
return !gtk_text_iter_equal (start, end);
}
static void
gtk_text_view_insert (GtkTextView *text_view,
const gchar *str)
{
gtk_text_buffer_insert_interactive_at_cursor (text_view->buffer, str, -1,
text_view->editable);
}
static void
gtk_text_view_delete (GtkTextView *text_view,
GtkDeleteType type,
gint count)
{
GtkTextIter insert;
GtkTextIter start;
GtkTextIter end;
gboolean leave_one = FALSE;
if (type == GTK_DELETE_CHARS)
{
/* Char delete deletes the selection, if one exists */
if (gtk_text_buffer_delete_selection (text_view->buffer, TRUE,
text_view->editable))
return;
}
gtk_text_buffer_get_iter_at_mark (text_view->buffer,
&insert,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"));
start = insert;
end = insert;
switch (type)
{
case GTK_DELETE_CHARS:
gtk_text_iter_forward_chars (&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_get_char (&end) == '\n')
{
gtk_text_iter_next_char (&end);
--count;
}
while (count > 0)
{
if (!gtk_text_iter_forward_to_newline (&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_newline (&end);
/* Do the lines beyond the first. */
while (count > 1)
{
gtk_text_iter_forward_to_newline (&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))
{
if (gtk_text_buffer_delete_interactive (text_view->buffer, &start, &end,
text_view->editable))
{
if (leave_one)
gtk_text_buffer_insert_interactive_at_cursor (text_view->buffer,
" ", 1,
text_view->editable);
}
gtk_text_view_scroll_to_mark (text_view,
gtk_text_buffer_get_mark (text_view->buffer, "insert"),
0);
}
}
static void
gtk_text_view_cut_clipboard (GtkTextView *text_view)
{
gtk_text_buffer_cut_clipboard (text_view->buffer, text_view->editable);
gtk_text_view_scroll_to_mark (text_view,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"),
0);
}
static void
gtk_text_view_copy_clipboard (GtkTextView *text_view)
{
gtk_text_buffer_copy_clipboard (text_view->buffer);
gtk_text_view_scroll_to_mark (text_view,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"),
0);
}
static void
gtk_text_view_paste_clipboard (GtkTextView *text_view)
{
gtk_text_buffer_paste_clipboard (text_view->buffer, text_view->editable);
gtk_text_view_scroll_to_mark (text_view,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"),
0);
}
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 (text_view->buffer,
&insert,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"));
gtk_text_buffer_move_mark (text_view->buffer,
gtk_text_buffer_get_mark (text_view->buffer,
"selection_bound"),
&insert);
}
static gboolean
move_insert_to_pointer_and_scroll (GtkTextView *text_view, gboolean partial_scroll)
{
gint x, y;
GdkModifierType state;
GtkTextIter newplace;
gint adjust = 0;
gboolean in_threshold = FALSE;
gdk_window_get_pointer (text_view->text_window->bin_window,
&x, &y, &state);
/* Adjust movement by how long we've been selecting, to
get an acceleration effect. The exact numbers are
pretty arbitrary. We have a threshold before we
start to accelerate. */
/* uncommenting this printf helps visualize how it works. */
/* printf ("%d\n", text_view->scrolling_accel_factor); */
if (text_view->scrolling_accel_factor > 10)
adjust = (text_view->scrolling_accel_factor - 10) * 75;
if (y < 0) /* scrolling upward */
adjust = -adjust;
/* No adjust if the pointer has moved back inside the window for sure.
Also I'm adding a small threshold where no adjust is added,
in case you want to do a continuous slow scroll. */
#define SLOW_SCROLL_TH 7
if (x >= (0 - SLOW_SCROLL_TH) &&
x < (SCREEN_WIDTH (text_view) + SLOW_SCROLL_TH) &&
y >= (0 - SLOW_SCROLL_TH) &&
y < (SCREEN_HEIGHT (text_view) + SLOW_SCROLL_TH))
{
adjust = 0;
in_threshold = TRUE;
}
gtk_text_layout_get_iter_at_pixel (text_view->layout,
&newplace,
x + text_view->xoffset,
y + text_view->yoffset + adjust);
{
gboolean scrolled = FALSE;
GtkTextMark *insert_mark =
gtk_text_buffer_get_mark (text_view->buffer, "insert");
gtk_text_buffer_move_mark (text_view->buffer,
insert_mark,
&newplace);
if (partial_scroll)
scrolled = gtk_text_view_scroll_to_mark_adjusted (text_view, insert_mark, 0, 0.7);
else
scrolled = gtk_text_view_scroll_to_mark_adjusted (text_view, insert_mark, 0, 1.0);
if (scrolled)
{
/* We want to avoid rapid jump to super-accelerated when you
leave the slow scroll threshold after scrolling for a
while. So we slowly decrease accel when scrolling inside
the threshold.
*/
if (in_threshold)
{
if (text_view->scrolling_accel_factor > 1)
text_view->scrolling_accel_factor -= 2;
}
else
text_view->scrolling_accel_factor += 1;
}
else
{
/* If we don't scroll we're probably inside the window, but
potentially just a bit outside. We decrease acceleration
while the user is fooling around inside the window.
Acceleration decreases faster than it increases. */
if (text_view->scrolling_accel_factor > 4)
text_view->scrolling_accel_factor -= 5;
}
return scrolled;
}
}
static gint
selection_scan_timeout (gpointer data)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (data);
if (move_insert_to_pointer_and_scroll (text_view, TRUE))
{
return TRUE; /* remain installed. */
}
else
{
text_view->selection_drag_scan_timeout = 0;
return FALSE; /* remove ourselves */
}
}
static gint
selection_motion_event_handler (GtkTextView *text_view, GdkEventMotion *event, gpointer data)
{
if (move_insert_to_pointer_and_scroll (text_view, TRUE))
{
/* 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->selection_drag_scan_timeout != 0) /* reset on every motion event */
gtk_timeout_remove (text_view->selection_drag_scan_timeout);
text_view->selection_drag_scan_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));
text_view->scrolling_accel_factor = 0;
newplace = *iter;
gtk_text_buffer_place_cursor (text_view->buffer, &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;
text_view->scrolling_accel_factor = 0;
if (text_view->selection_drag_scan_timeout != 0)
{
gtk_timeout_remove (text_view->selection_drag_scan_timeout);
text_view->selection_drag_scan_timeout = 0;
}
/* one last update to current position */
move_insert_to_pointer_and_scroll (text_view, FALSE);
gtk_grab_remove (GTK_WIDGET (text_view));
return TRUE;
}
/*
* Layout utils
*/
static void
gtk_text_view_set_adjustment_upper (GtkAdjustment *adj, gfloat upper)
{
if (upper != adj->upper)
{
gfloat min = MAX (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");
if (value_changed)
gtk_signal_emit_by_name (GTK_OBJECT (adj), "value_changed");
}
}
static void
gtk_text_view_scroll_calc_now (GtkTextView *text_view)
{
gint width = 0, height = 0;
gtk_text_view_ensure_layout (text_view);
gtk_text_layout_set_screen_width (text_view->layout,
SCREEN_WIDTH (text_view));
gtk_text_layout_get_size (text_view->layout, &width, &height);
#if 0
/* If the width is less than the screen width (likely
if we have wrapping turned on for the whole widget),
then we want to set the scroll region to the screen
width. If the width is greater (wrapping off) then we
probably want to set the scroll region to the width
of the layout. I guess.
*/
width = MAX (text_view->layout->screen_width, width);
height = height;
#endif
if (text_view->width != width || text_view->height != height)
{
#if 0
printf ("layout size set, widget width is %d\n",
GTK_WIDGET (text_view)->allocation.width);
#endif
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;
}
}
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->fg[GTK_STATE_NORMAL];
if (values->font_desc)
pango_font_description_free (values->font_desc);
values->font_desc = pango_font_description_copy (style->font_desc);
}
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;
text_view->layout = gtk_text_layout_new ();
gtk_signal_connect (GTK_OBJECT (text_view->layout),
"invalidated",
GTK_SIGNAL_FUNC (invalidated_handler),
text_view);
gtk_signal_connect (GTK_OBJECT (text_view->layout),
"changed",
GTK_SIGNAL_FUNC (changed_handler),
text_view);
if (text_view->buffer)
gtk_text_layout_set_buffer (text_view->layout, text_view->buffer);
if ((GTK_WIDGET_HAS_FOCUS (text_view) && text_view->cursor_visible))
gtk_text_view_start_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));
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 = 2;
style->pixels_below_lines = 2;
style->pixels_inside_wrap = 1;
style->wrap_mode = text_view->wrap_mode;
style->justify = GTK_JUSTIFY_LEFT;
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);
}
}
static void
gtk_text_view_destroy_layout (GtkTextView *text_view)
{
if (text_view->layout)
{
gtk_text_view_stop_cursor_blink (text_view);
gtk_text_view_end_selection_drag (text_view, NULL);
gtk_signal_disconnect_by_func (GTK_OBJECT (text_view->layout),
invalidated_handler, text_view);
gtk_signal_disconnect_by_func (GTK_OBJECT (text_view->layout),
changed_handler, text_view);
gtk_object_unref (GTK_OBJECT (text_view->layout));
text_view->layout = NULL;
}
}
/*
* 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;
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);
/* We're inside the selection, so start without being able
* to accept the drag.
*/
gdk_drag_status (context, 0, event->time);
gtk_text_mark_set_visible (text_view->dnd_mark, FALSE);
}
static void
gtk_text_view_drag_begin (GtkWidget *widget,
GdkDragContext *context)
{
}
static void
gtk_text_view_drag_end (GtkWidget *widget,
GdkDragContext *context)
{
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
gtk_text_mark_set_visible (text_view->dnd_mark, FALSE);
}
static void
gtk_text_view_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time)
{
gchar *str;
gint length;
GtkTextIter start;
GtkTextIter end;
GtkTextView *text_view;
text_view = GTK_TEXT_VIEW (widget);
str = NULL;
length = 0;
if (gtk_text_buffer_get_selection_bounds (text_view->buffer, &start, &end))
{
/* Extract the selected text */
str = gtk_text_iter_get_visible_text (&start, &end);
length = strlen (str);
}
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)
{
}
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;
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 */
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_text_buffer_get_selection_bounds (text_view->buffer,
&start, &end) &&
gtk_text_iter_in_range (&newplace, &start, &end))
{
/* We're inside the selection. */
gdk_drag_status (context, 0, time);
gtk_text_mark_set_visible (text_view->dnd_mark, FALSE);
}
else
{
if (gtk_text_iter_editable (&newplace, text_view->editable))
{
gtk_text_mark_set_visible (text_view->dnd_mark,
text_view->cursor_visible);
gdk_drag_status (context, context->suggested_action, time);
}
else
{
/* Can't drop here. */
gdk_drag_status (context, 0, time);
gtk_text_mark_set_visible (text_view->dnd_mark, FALSE);
}
}
gtk_text_buffer_move_mark (text_view->buffer,
gtk_text_buffer_get_mark (text_view->buffer,
"gtk_drag_target"),
&newplace);
{
/* The effect of this is that the text scrolls if you're near
the edge. We have to scroll whether or not we're inside
the selection. */
gint margin;
margin = MIN (SCREEN_WIDTH (widget), SCREEN_HEIGHT (widget));
margin /= 5;
gtk_text_view_scroll_to_mark_adjusted (text_view,
gtk_text_buffer_get_mark (text_view->buffer,
"gtk_drag_target"),
margin, 1.0);
}
return TRUE;
}
static gboolean
gtk_text_view_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
#if 0
/* called automatically. */
if (context->targets)
{
gtk_drag_get_data (widget, context,
GPOINTER_TO_INT (context->targets->data),
time);
return TRUE;
}
else
return FALSE;
#endif
return TRUE;
}
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;
GtkTextMark *drag_target_mark;
gchar *str;
text_view = GTK_TEXT_VIEW (widget);
drag_target_mark = gtk_text_buffer_get_mark (text_view->buffer,
"gtk_drag_target");
if (drag_target_mark == NULL)
return;
gtk_text_buffer_get_iter_at_mark (text_view->buffer,
&drop_point,
drag_target_mark);
str = gtk_selection_data_get_text (selection_data);
if (str)
{
gtk_text_buffer_insert_interactive (text_view->buffer,
&drop_point, str, -1,
text_view->editable);
g_free (str);
}
}
static GtkAdjustment*
get_hadjustment (GtkTextView *text_view)
{
if (text_view->hadjustment == NULL)
gtk_text_view_set_scroll_adjustments (text_view,
(GtkAdjustment*)
gtk_adjustment_new (0.0, 0.0, 0.0,
0.0, 0.0, 0.0),
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,
(GtkAdjustment*)
gtk_adjustment_new (0.0, 0.0, 0.0,
0.0, 0.0, 0.0));
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 (text_view != NULL);
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);
gtk_object_unref (GTK_OBJECT (text_view->hadjustment));
}
if (text_view->vadjustment && (text_view->vadjustment != vadj))
{
gtk_signal_disconnect_by_data (GTK_OBJECT (text_view->vadjustment), text_view);
gtk_object_unref (GTK_OBJECT (text_view->vadjustment));
}
if (text_view->hadjustment != hadj)
{
text_view->hadjustment = hadj;
gtk_object_ref (GTK_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;
gtk_object_ref (GTK_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;
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 (text_view->buffer, text_view->first_para_mark, &iter);
text_view->first_para_pixels = adj->value - line_top;
}
}
if (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);
}
}
static void
gtk_text_view_commit_handler (GtkIMContext *context,
const gchar *str,
GtkTextView *text_view)
{
gtk_text_buffer_delete_selection (text_view->buffer, TRUE,
text_view->editable);
if (!strcmp (str, "\n"))
{
gtk_text_buffer_insert_interactive_at_cursor (text_view->buffer, "\n", 1,
text_view->editable);
}
else
{
if (text_view->overwrite_mode)
gtk_text_view_delete (text_view, GTK_DELETE_CHARS, 1);
gtk_text_buffer_insert_interactive_at_cursor (text_view->buffer, str, -1,
text_view->editable);
}
gtk_text_view_scroll_to_mark (text_view,
gtk_text_buffer_get_mark (text_view->buffer,
"insert"),
0);
}
static void
gtk_text_view_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data)
{
GtkTextView *text_view = GTK_TEXT_VIEW (data);
if (mark == gtk_text_buffer_get_insert (buffer))
{
text_view->virtual_cursor_x = -1;
text_view->virtual_cursor_y = -1;
}
}
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 (text_view->buffer, &insert,
gtk_text_buffer_get_mark (text_view->buffer,
"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 (text_view->buffer, &insert,
gtk_text_buffer_get_mark (text_view->buffer,
"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;
}
/* 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);
gdk_window_process_updates (win->bin_window, TRUE);
}
}
static void
text_window_invalidate_rect (GtkTextWindow *win,
GdkRectangle *rect)
{
gdk_window_invalidate_rect (win->bin_window, rect, FALSE);
}
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 */
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;
}
}
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 (text_view), 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
{
g_warning ("%s: Window is not a text view window",
G_STRLOC);
return 0;
}
}
static void
buffer_to_widget (GtkTextView *text_view,
gint buffer_x,
gint buffer_y,
gint *window_x,
gint *window_y)
{
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 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);
}
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;
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)
{
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);
}
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;
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);
}
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);
}
else
{
if ((*winp)->requisition.height == height)
return;
}
gtk_widget_queue_resize (GTK_WIDGET (text_view));
}
}
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);
g_return_if_fail (type != GTK_TEXT_WINDOW_WIDGET);
g_return_if_fail (type != GTK_TEXT_WINDOW_TEXT);
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 ("Unknown GtkTextWindowType in %s", G_STRLOC);
break;
}
}
void
gtk_text_view_set_text_window_size (GtkTextView *text_view,
gint width,
gint height)
{
GtkTextWindow *win;
g_return_if_fail (GTK_IS_TEXT_VIEW (text_view));
g_return_if_fail (width > 0);
g_return_if_fail (height > 0);
win = text_view->text_window;
if (win->requisition.width == width &&
win->requisition.height == height)
return;
win->requisition.width = width;
win->requisition.height = height;
gtk_widget_queue_resize (GTK_WIDGET (text_view));
}
/*
* Child widgets
*/
static GtkTextViewChild*
text_view_child_new_anchored (GtkWidget *child,
GtkTextChildAnchor *anchor)
{
GtkTextViewChild *vc;
vc = g_new (GtkTextViewChild, 1);
vc->widget = child;
vc->anchor = anchor;
g_object_ref (G_OBJECT (vc->widget));
gtk_text_child_anchor_ref (vc->anchor);
gtk_object_set_data (GTK_OBJECT (child),
"gtk-text-view-child",
vc);
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;
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)
{
gtk_object_remove_data (GTK_OBJECT (child->widget),
"gtk-text-view-child");
g_object_unref (G_OBJECT (child->widget));
gtk_text_child_anchor_unref (child->anchor);
g_free (child);
}
static void
text_view_child_realize (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);
}
gtk_widget_realize (vc->widget);
}
static void
text_view_child_unrealize (GtkTextViewChild *vc)
{
gtk_widget_unrealize (vc->widget);
}
static void
add_child (GtkTextView *text_view,
GtkTextViewChild *vc)
{
text_view->children = g_slist_prepend (text_view->children,
vc);
gtk_widget_set_parent (vc->widget, GTK_WIDGET (text_view));
if (GTK_WIDGET_REALIZED (text_view))
text_view_child_realize (text_view, vc);
if (GTK_WIDGET_VISIBLE (text_view) && GTK_WIDGET_VISIBLE (vc->widget))
{
if (GTK_WIDGET_MAPPED (text_view))
gtk_widget_map (vc->widget);
gtk_widget_queue_resize (vc->widget);
}
}
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 (anchor != NULL);
g_return_if_fail (child->parent == NULL);
vc = text_view_child_new_anchored (child, anchor);
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 = gtk_object_get_data (GTK_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);
}
Reference in New Issue View Git Blame Copy Permalink