63f2fd9614
Wed Dec 22 14:22:19 2004 Søren Sandmann <sandmann@redhat.com> * tests/testtoolbar.c (timeout_cb): Add sensitivity-changing timeout. Written by Christian Persch. Wed Dec 22 14:14:02 2004 Søren Sandmann <sandmann@redhat.com> Bug #161561 * gdk/x11/gdkwindow-x11.c (tmp_{re,un}set_bg): Only set/reset the background for windows that get expose events. * gdk/gdkwindow.c (gdk_window_process_updates_internal): Remove hack to repaint !expose windows.
2862 lines
80 KiB
C
2862 lines
80 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include <config.h>
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#include "gdkalias.h"
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#include "gdkwindow.h"
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#include "gdkinternals.h"
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#include "gdk.h" /* For gdk_rectangle_union() */
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#include "gdkpixmap.h"
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#include "gdkdrawable.h"
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#include "gdkpixmap.h"
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#include "gdkscreen.h"
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#define USE_BACKING_STORE /* Appears to work on Win32, too, now. */
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typedef struct _GdkWindowPaint GdkWindowPaint;
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struct _GdkWindowPaint
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{
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GdkRegion *region;
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GdkPixmap *pixmap;
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gint x_offset;
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gint y_offset;
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};
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static GdkGC *gdk_window_create_gc (GdkDrawable *drawable,
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GdkGCValues *values,
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GdkGCValuesMask mask);
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static void gdk_window_draw_rectangle (GdkDrawable *drawable,
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GdkGC *gc,
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gboolean filled,
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gint x,
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gint y,
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gint width,
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gint height);
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static void gdk_window_draw_arc (GdkDrawable *drawable,
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GdkGC *gc,
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gboolean filled,
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gint x,
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gint y,
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gint width,
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gint height,
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gint angle1,
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gint angle2);
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static void gdk_window_draw_polygon (GdkDrawable *drawable,
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GdkGC *gc,
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gboolean filled,
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GdkPoint *points,
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gint npoints);
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static void gdk_window_draw_text (GdkDrawable *drawable,
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GdkFont *font,
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GdkGC *gc,
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gint x,
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gint y,
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const gchar *text,
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gint text_length);
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static void gdk_window_draw_text_wc (GdkDrawable *drawable,
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GdkFont *font,
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GdkGC *gc,
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gint x,
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gint y,
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const GdkWChar *text,
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gint text_length);
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static void gdk_window_draw_drawable (GdkDrawable *drawable,
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GdkGC *gc,
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GdkPixmap *src,
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gint xsrc,
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gint ysrc,
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gint xdest,
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gint ydest,
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gint width,
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gint height);
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static void gdk_window_draw_points (GdkDrawable *drawable,
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GdkGC *gc,
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GdkPoint *points,
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gint npoints);
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static void gdk_window_draw_segments (GdkDrawable *drawable,
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GdkGC *gc,
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GdkSegment *segs,
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gint nsegs);
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static void gdk_window_draw_lines (GdkDrawable *drawable,
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GdkGC *gc,
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GdkPoint *points,
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gint npoints);
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static void gdk_window_draw_glyphs (GdkDrawable *drawable,
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GdkGC *gc,
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PangoFont *font,
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gint x,
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gint y,
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PangoGlyphString *glyphs);
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static void gdk_window_draw_glyphs_transformed (GdkDrawable *drawable,
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GdkGC *gc,
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PangoMatrix *matrix,
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PangoFont *font,
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gint x,
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gint y,
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PangoGlyphString *glyphs);
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static void gdk_window_draw_image (GdkDrawable *drawable,
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GdkGC *gc,
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GdkImage *image,
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gint xsrc,
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gint ysrc,
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gint xdest,
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gint ydest,
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gint width,
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gint height);
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static void gdk_window_draw_pixbuf (GdkDrawable *drawable,
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GdkGC *gc,
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GdkPixbuf *pixbuf,
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gint src_x,
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gint src_y,
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gint dest_x,
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gint dest_y,
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gint width,
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gint height,
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GdkRgbDither dither,
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gint x_dither,
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gint y_dither);
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static void gdk_window_draw_trapezoids (GdkDrawable *drawable,
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GdkGC *gc,
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GdkTrapezoid *trapezoids,
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gint n_trapezoids);
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static GdkImage* gdk_window_copy_to_image (GdkDrawable *drawable,
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GdkImage *image,
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gint src_x,
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gint src_y,
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gint dest_x,
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gint dest_y,
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gint width,
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gint height);
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static void gdk_window_real_get_size (GdkDrawable *drawable,
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gint *width,
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gint *height);
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static GdkVisual* gdk_window_real_get_visual (GdkDrawable *drawable);
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static gint gdk_window_real_get_depth (GdkDrawable *drawable);
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static GdkScreen* gdk_window_real_get_screen (GdkDrawable *drawable);
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static void gdk_window_real_set_colormap (GdkDrawable *drawable,
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GdkColormap *cmap);
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static GdkColormap* gdk_window_real_get_colormap (GdkDrawable *drawable);
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static GdkDrawable* gdk_window_get_composite_drawable (GdkDrawable *drawable,
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gint x,
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gint y,
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gint width,
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gint height,
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gint *composite_x_offset,
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gint *composite_y_offset);
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static GdkRegion* gdk_window_get_clip_region (GdkDrawable *drawable);
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static GdkRegion* gdk_window_get_visible_region (GdkDrawable *drawable);
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static void gdk_window_free_paint_stack (GdkWindow *window);
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static void gdk_window_init (GdkWindowObject *window);
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static void gdk_window_class_init (GdkWindowObjectClass *klass);
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static void gdk_window_finalize (GObject *object);
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static void gdk_window_clear_backing_rect (GdkWindow *window,
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gint x,
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gint y,
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gint width,
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gint height);
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static gpointer parent_class = NULL;
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GType
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gdk_window_object_get_type (void)
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{
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static GType object_type = 0;
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if (!object_type)
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{
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static const GTypeInfo object_info =
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{
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sizeof (GdkWindowObjectClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gdk_window_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GdkWindowObject),
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0, /* n_preallocs */
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(GInstanceInitFunc) gdk_window_init,
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};
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object_type = g_type_register_static (GDK_TYPE_DRAWABLE,
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"GdkWindow",
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&object_info, 0);
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}
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return object_type;
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}
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static void
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gdk_window_init (GdkWindowObject *window)
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{
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/* 0-initialization is good for all other fields. */
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window->window_type = GDK_WINDOW_CHILD;
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window->state = GDK_WINDOW_STATE_WITHDRAWN;
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window->impl = g_object_new (_gdk_window_impl_get_type (), NULL);
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}
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static void
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gdk_window_class_init (GdkWindowObjectClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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object_class->finalize = gdk_window_finalize;
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drawable_class->create_gc = gdk_window_create_gc;
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drawable_class->draw_rectangle = gdk_window_draw_rectangle;
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drawable_class->draw_arc = gdk_window_draw_arc;
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drawable_class->draw_polygon = gdk_window_draw_polygon;
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drawable_class->draw_text = gdk_window_draw_text;
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drawable_class->draw_text_wc = gdk_window_draw_text_wc;
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drawable_class->draw_drawable = gdk_window_draw_drawable;
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drawable_class->draw_points = gdk_window_draw_points;
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drawable_class->draw_segments = gdk_window_draw_segments;
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drawable_class->draw_lines = gdk_window_draw_lines;
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drawable_class->draw_glyphs = gdk_window_draw_glyphs;
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drawable_class->draw_glyphs_transformed = gdk_window_draw_glyphs_transformed;
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drawable_class->draw_image = gdk_window_draw_image;
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drawable_class->draw_pixbuf = gdk_window_draw_pixbuf;
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drawable_class->draw_trapezoids = gdk_window_draw_trapezoids;
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drawable_class->get_depth = gdk_window_real_get_depth;
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drawable_class->get_screen = gdk_window_real_get_screen;
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drawable_class->get_size = gdk_window_real_get_size;
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drawable_class->set_colormap = gdk_window_real_set_colormap;
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drawable_class->get_colormap = gdk_window_real_get_colormap;
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drawable_class->get_visual = gdk_window_real_get_visual;
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drawable_class->_copy_to_image = gdk_window_copy_to_image;
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drawable_class->get_clip_region = gdk_window_get_clip_region;
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drawable_class->get_visible_region = gdk_window_get_visible_region;
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drawable_class->get_composite_drawable = gdk_window_get_composite_drawable;
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}
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static void
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gdk_window_finalize (GObject *object)
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{
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GdkWindow *window = GDK_WINDOW (object);
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GdkWindowObject *obj = (GdkWindowObject *) object;
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if (!GDK_WINDOW_DESTROYED (window))
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{
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if (GDK_WINDOW_TYPE (window) != GDK_WINDOW_FOREIGN)
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{
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g_warning ("losing last reference to undestroyed window\n");
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_gdk_window_destroy (window, FALSE);
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}
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else
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/* We use TRUE here, to keep us from actually calling
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* XDestroyWindow() on the window
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*/
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_gdk_window_destroy (window, TRUE);
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}
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g_object_unref (obj->impl);
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obj->impl = NULL;
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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window_remove_filters (GdkWindow *window)
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{
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GdkWindowObject *obj = (GdkWindowObject*) window;
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if (obj->filters)
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{
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GList *tmp_list;
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for (tmp_list = obj->filters; tmp_list; tmp_list = tmp_list->next)
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g_free (tmp_list->data);
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g_list_free (obj->filters);
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obj->filters = NULL;
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}
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}
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/**
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* _gdk_window_destroy_hierarchy:
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* @window: a #GdkWindow
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* @recursing: If TRUE, then this is being called because a parent
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* was destroyed. This generally means that the call to the
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* windowing system to destroy the window can be omitted, since
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* it will be destroyed as a result of the parent being destroyed.
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* Unless @foreign_destroy.
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* @foreign_destroy: If TRUE, the window or a parent was destroyed by some
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* external agency. The window has already been destroyed and no
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* windowing system calls should be made. (This may never happen
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* for some windowing systems.)
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*
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* Internal function to destroy a window. Like gdk_window_destroy(),
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* but does not drop the reference count created by gdk_window_new().
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**/
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static void
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_gdk_window_destroy_hierarchy (GdkWindow *window,
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gboolean recursing,
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gboolean foreign_destroy)
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{
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GdkWindowObject *private;
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GdkWindowObject *temp_private;
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GdkWindow *temp_window;
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GList *children;
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GList *tmp;
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g_return_if_fail (window != NULL);
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private = (GdkWindowObject*) window;
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if (GDK_WINDOW_DESTROYED (window))
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return;
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switch (GDK_WINDOW_TYPE (window))
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{
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case GDK_WINDOW_TOPLEVEL:
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case GDK_WINDOW_CHILD:
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case GDK_WINDOW_DIALOG:
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case GDK_WINDOW_TEMP:
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case GDK_WINDOW_FOREIGN:
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if (GDK_WINDOW_TYPE (window) == GDK_WINDOW_FOREIGN && !foreign_destroy)
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{
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/* Logically, it probably makes more sense to send
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* a "destroy yourself" message to the foreign window
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* whether or not it's in our heirarchy; but for historical
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* reasons, we only send "destroy yourself" messages to
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* foreign windows in our heirarchy.
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*/
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if (private->parent)
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_gdk_windowing_window_destroy_foreign (window);
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/* Also for historical reasons, we remove any filters
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* on a foreign window when it or a parent is destroyed;
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* this likely causes problems if two separate portions
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* of code are maintaining filter lists on a foreign window.
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*/
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window_remove_filters (window);
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}
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else
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{
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private->state |= GDK_WINDOW_STATE_WITHDRAWN;
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if (private->parent)
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{
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GdkWindowObject *parent_private = (GdkWindowObject *)private->parent;
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if (parent_private->children)
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parent_private->children = g_list_remove (parent_private->children, window);
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}
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_gdk_window_clear_update_area (window);
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gdk_window_free_paint_stack (window);
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if (private->bg_pixmap &&
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private->bg_pixmap != GDK_PARENT_RELATIVE_BG &&
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private->bg_pixmap != GDK_NO_BG)
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{
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g_object_unref (private->bg_pixmap);
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private->bg_pixmap = NULL;
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}
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if (GDK_WINDOW_TYPE (window) == GDK_WINDOW_FOREIGN)
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g_assert (private->children == NULL);
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else
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{
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children = tmp = private->children;
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private->children = NULL;
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while (tmp)
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{
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temp_window = tmp->data;
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tmp = tmp->next;
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temp_private = (GdkWindowObject*) temp_window;
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if (temp_private)
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_gdk_window_destroy_hierarchy (temp_window,
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TRUE, foreign_destroy);
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}
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g_list_free (children);
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}
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_gdk_windowing_window_destroy (window, recursing, foreign_destroy);
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private->parent = NULL;
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private->destroyed = TRUE;
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window_remove_filters (window);
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gdk_drawable_set_colormap (GDK_DRAWABLE (window), NULL);
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}
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break;
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case GDK_WINDOW_ROOT:
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g_error ("attempted to destroy root window");
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break;
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}
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}
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/**
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* _gdk_window_destroy:
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* @window: a #GdkWindow
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* @foreign_destroy: If TRUE, the window or a parent was destroyed by some
|
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* external agency. The window has already been destroyed and no
|
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* windowing system calls should be made. (This may never happen
|
|
* for some windowing systems.)
|
|
*
|
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* Internal function to destroy a window. Like gdk_window_destroy(),
|
|
* but does not drop the reference count created by gdk_window_new().
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|
**/
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void
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_gdk_window_destroy (GdkWindow *window,
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gboolean foreign_destroy)
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{
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_gdk_window_destroy_hierarchy (window, FALSE, foreign_destroy);
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}
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|
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/**
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|
* gdk_window_destroy:
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* @window: a #GdkWindow
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*
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* Destroys the window system resources associated with @window and decrements @window's
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* reference count. The window system resources for all children of @window are also
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* destroyed, but the children's reference counts are not decremented.
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|
*
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|
* Note that a window will not be destroyed automatically when its reference count
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* reaches zero. You must call this function yourself before that happens.
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|
*
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|
**/
|
|
void
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gdk_window_destroy (GdkWindow *window)
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{
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_gdk_window_destroy_hierarchy (window, FALSE, FALSE);
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g_object_unref (window);
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|
}
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|
|
/**
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|
* gdk_window_set_user_data:
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|
* @window: a #GdkWindow
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|
* @user_data: user data
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|
*
|
|
* For most purposes this function is deprecated in favor of
|
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* g_object_set_data(). However, for historical reasons GTK+ stores
|
|
* the #GtkWidget that owns a #GdkWindow as user data on the
|
|
* #GdkWindow. So, custom widget implementations should use
|
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* this function for that. If GTK+ receives an event for a #GdkWindow,
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* and the user data for the window is non-%NULL, GTK+ will assume the
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|
* user data is a #GtkWidget, and forward the event to that widget.
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*
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|
**/
|
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void
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gdk_window_set_user_data (GdkWindow *window,
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gpointer user_data)
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{
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g_return_if_fail (window != NULL);
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((GdkWindowObject*)window)->user_data = user_data;
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}
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|
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/**
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|
* gdk_window_get_user_data:
|
|
* @window: a #GdkWindow
|
|
* @data: return location for user data
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|
*
|
|
* Retrieves the user data for @window, which is normally the widget
|
|
* that @window belongs to. See gdk_window_set_user_data().
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_get_user_data (GdkWindow *window,
|
|
gpointer *data)
|
|
{
|
|
g_return_if_fail (window != NULL);
|
|
|
|
*data = ((GdkWindowObject*)window)->user_data;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_get_window_type:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Gets the type of the window. See #GdkWindowType.
|
|
*
|
|
* Return value: type of window
|
|
**/
|
|
GdkWindowType
|
|
gdk_window_get_window_type (GdkWindow *window)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_WINDOW (window), (GdkWindowType) -1);
|
|
|
|
return GDK_WINDOW_TYPE (window);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_get_position:
|
|
* @window: a #GdkWindow
|
|
* @x: X coordinate of window
|
|
* @y: Y coordinate of window
|
|
*
|
|
* Obtains the position of the window as reported in the
|
|
* most-recently-processed #GdkEventConfigure. Contrast with
|
|
* gdk_window_get_geometry() which queries the X server for the
|
|
* current window position, regardless of which events have been
|
|
* received or processed.
|
|
*
|
|
* The position coordinates are relative to the window's parent window.
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_get_position (GdkWindow *window,
|
|
gint *x,
|
|
gint *y)
|
|
{
|
|
GdkWindowObject *obj;
|
|
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
obj = (GdkWindowObject*) window;
|
|
|
|
if (x)
|
|
*x = obj->x;
|
|
if (y)
|
|
*y = obj->y;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_get_parent:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Obtains the parent of @window, as known to GDK. Does not query the
|
|
* X server; thus this returns the parent as passed to gdk_window_new(),
|
|
* not the actual parent. This should never matter unless you're using
|
|
* Xlib calls mixed with GDK calls on the X11 platform. It may also
|
|
* matter for toplevel windows, because the window manager may choose
|
|
* to reparent them.
|
|
*
|
|
* Return value: parent of @window
|
|
**/
|
|
GdkWindow*
|
|
gdk_window_get_parent (GdkWindow *window)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
|
|
|
|
return (GdkWindow*) ((GdkWindowObject*) window)->parent;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_get_toplevel:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Gets the toplevel window that's an ancestor of @window.
|
|
*
|
|
* Return value: the toplevel window containing @window
|
|
**/
|
|
GdkWindow*
|
|
gdk_window_get_toplevel (GdkWindow *window)
|
|
{
|
|
GdkWindowObject *obj;
|
|
|
|
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
|
|
|
|
obj = (GdkWindowObject *)window;
|
|
while (GDK_WINDOW_TYPE (obj) == GDK_WINDOW_CHILD)
|
|
obj = (GdkWindowObject *)obj->parent;
|
|
|
|
return GDK_WINDOW (obj);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_get_children:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Gets the list of children of @window known to GDK.
|
|
* This function only returns children created via GDK,
|
|
* so for example it's useless when used with the root window;
|
|
* it only returns windows an application created itself.
|
|
*
|
|
* The returned list must be freed, but the elements in the
|
|
* list need not be.
|
|
*
|
|
* Return value: list of child windows inside @window
|
|
**/
|
|
GList*
|
|
gdk_window_get_children (GdkWindow *window)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
|
|
|
|
if (GDK_WINDOW_DESTROYED (window))
|
|
return NULL;
|
|
|
|
return g_list_copy (GDK_WINDOW_OBJECT (window)->children);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_peek_children:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Like gdk_window_get_children(), but does not copy the list of
|
|
* children, so the list does not need to be freed.
|
|
*
|
|
* Return value: a reference to the list of child windows in @window
|
|
**/
|
|
GList *
|
|
gdk_window_peek_children (GdkWindow *window)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
|
|
|
|
if (GDK_WINDOW_DESTROYED (window))
|
|
return NULL;
|
|
|
|
return GDK_WINDOW_OBJECT (window)->children;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_add_filter:
|
|
* @window: a #GdkWindow
|
|
* @function: filter callback
|
|
* @data: data to pass to filter callback
|
|
*
|
|
* Adds an event filter to @window, allowing you to intercept events
|
|
* before they reach GDK. This is a low-level operation and makes it
|
|
* easy to break GDK and/or GTK+, so you have to know what you're
|
|
* doing. Pass %NULL for @window to get all events for all windows,
|
|
* instead of events for a specific window.
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_add_filter (GdkWindow *window,
|
|
GdkFilterFunc function,
|
|
gpointer data)
|
|
{
|
|
GdkWindowObject *private;
|
|
GList *tmp_list;
|
|
GdkEventFilter *filter;
|
|
|
|
g_return_if_fail (window == NULL || GDK_IS_WINDOW (window));
|
|
|
|
private = (GdkWindowObject*) window;
|
|
if (private && GDK_WINDOW_DESTROYED (window))
|
|
return;
|
|
|
|
if (private)
|
|
tmp_list = private->filters;
|
|
else
|
|
tmp_list = _gdk_default_filters;
|
|
|
|
while (tmp_list)
|
|
{
|
|
filter = (GdkEventFilter *)tmp_list->data;
|
|
if ((filter->function == function) && (filter->data == data))
|
|
return;
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
filter = g_new (GdkEventFilter, 1);
|
|
filter->function = function;
|
|
filter->data = data;
|
|
|
|
if (private)
|
|
private->filters = g_list_append (private->filters, filter);
|
|
else
|
|
_gdk_default_filters = g_list_append (_gdk_default_filters, filter);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_remove_filter:
|
|
* @window: a #GdkWindow
|
|
* @function: previously-added filter function
|
|
* @data: user data for previously-added filter function
|
|
*
|
|
* Remove a filter previously added with gdk_window_add_filter().
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_remove_filter (GdkWindow *window,
|
|
GdkFilterFunc function,
|
|
gpointer data)
|
|
{
|
|
GdkWindowObject *private;
|
|
GList *tmp_list, *node;
|
|
GdkEventFilter *filter;
|
|
|
|
g_return_if_fail (window == NULL || GDK_IS_WINDOW (window));
|
|
|
|
private = (GdkWindowObject*) window;
|
|
|
|
if (private)
|
|
tmp_list = private->filters;
|
|
else
|
|
tmp_list = _gdk_default_filters;
|
|
|
|
while (tmp_list)
|
|
{
|
|
filter = (GdkEventFilter *)tmp_list->data;
|
|
node = tmp_list;
|
|
tmp_list = tmp_list->next;
|
|
|
|
if ((filter->function == function) && (filter->data == data))
|
|
{
|
|
if (private)
|
|
private->filters = g_list_remove_link (private->filters, node);
|
|
else
|
|
_gdk_default_filters = g_list_remove_link (_gdk_default_filters, node);
|
|
g_list_free_1 (node);
|
|
g_free (filter);
|
|
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gdk_screen_get_toplevel_windows:
|
|
* @screen: The #GdkScreen where the toplevels are located.
|
|
*
|
|
* Obtains a list of all toplevel windows known to GDK on the screen @screen.
|
|
* A toplevel window is a child of the root window (see
|
|
* gdk_get_default_root_window()).
|
|
*
|
|
* The returned list should be freed with g_list_free(), but
|
|
* its elements need not be freed.
|
|
*
|
|
* Return value: list of toplevel windows, free with g_list_free()
|
|
*
|
|
* Since: 2.2
|
|
**/
|
|
GList *
|
|
gdk_screen_get_toplevel_windows (GdkScreen *screen)
|
|
{
|
|
GdkWindow * root_window;
|
|
GList *new_list = NULL;
|
|
GList *tmp_list;
|
|
|
|
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
|
|
|
|
root_window = gdk_screen_get_root_window (screen);
|
|
|
|
tmp_list = ((GdkWindowObject *)root_window)->children;
|
|
while (tmp_list)
|
|
{
|
|
if (GDK_WINDOW_TYPE (tmp_list->data) != GDK_WINDOW_FOREIGN)
|
|
new_list = g_list_prepend (new_list, tmp_list->data);
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
return new_list;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_get_toplevels:
|
|
*
|
|
* Obtains a list of all toplevel windows known to GDK on the default
|
|
* screen (see gdk_window_get_toplevels_for_screen()).
|
|
* A toplevel window is a child of the root window (see
|
|
* gdk_get_default_root_window()).
|
|
*
|
|
* The returned list should be freed with g_list_free(), but
|
|
* its elements need not be freed.
|
|
*
|
|
* Return value: list of toplevel windows, free with g_list_free()
|
|
**/
|
|
GList *
|
|
gdk_window_get_toplevels (void)
|
|
{
|
|
return gdk_screen_get_toplevel_windows (gdk_screen_get_default ());
|
|
}
|
|
|
|
/**
|
|
* gdk_window_is_visible:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Checks whether the window has been mapped (with gdk_window_show() or
|
|
* gdk_window_show_unraised()).
|
|
*
|
|
* Return value: %TRUE if the window is mapped
|
|
**/
|
|
gboolean
|
|
gdk_window_is_visible (GdkWindow *window)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
|
|
|
|
return GDK_WINDOW_IS_MAPPED (window);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_is_viewable:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Check if the window and all ancestors of the window are
|
|
* mapped. (This is not necessarily "viewable" in the X sense, since
|
|
* we only check as far as we have GDK window parents, not to the root
|
|
* window.)
|
|
*
|
|
* Return value: %TRUE if the window is viewable
|
|
**/
|
|
gboolean
|
|
gdk_window_is_viewable (GdkWindow *window)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
GdkScreen *screen;
|
|
GdkWindow *root_window;
|
|
|
|
g_return_val_if_fail (window != NULL, FALSE);
|
|
g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
|
|
|
|
screen = gdk_drawable_get_screen (window);
|
|
root_window = gdk_screen_get_root_window (screen);
|
|
|
|
while (private &&
|
|
(private != (GdkWindowObject *)root_window) &&
|
|
(GDK_WINDOW_TYPE (private) != GDK_WINDOW_FOREIGN))
|
|
{
|
|
if (GDK_WINDOW_DESTROYED (private) || !GDK_WINDOW_IS_MAPPED (private))
|
|
return FALSE;
|
|
|
|
private = (GdkWindowObject *)private->parent;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_get_state:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Gets the bitwise OR of the currently active window state flags,
|
|
* from the #GdkWindowState enumeration.
|
|
*
|
|
* Return value: window state bitfield
|
|
**/
|
|
GdkWindowState
|
|
gdk_window_get_state (GdkWindow *window)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
|
|
g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
|
|
|
|
return private->state;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_begin_paint_rect:
|
|
* @window: a #GdkWindow
|
|
* @rectangle: rectangle you intend to draw to
|
|
*
|
|
* A convenience wrapper around gdk_window_begin_paint_region() which
|
|
* creates a rectangular region for you. See
|
|
* gdk_window_begin_paint_region() for details.
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_begin_paint_rect (GdkWindow *window,
|
|
GdkRectangle *rectangle)
|
|
{
|
|
GdkRegion *region;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
region = gdk_region_rectangle (rectangle);
|
|
gdk_window_begin_paint_region (window, region);
|
|
gdk_region_destroy (region);
|
|
}
|
|
|
|
#ifdef GDK_WINDOWING_X11
|
|
#include "x11/gdkx.h"
|
|
#endif
|
|
|
|
/**
|
|
* gdk_window_begin_paint_region:
|
|
* @window: a #GdkWindow
|
|
* @region: region you intend to draw to
|
|
*
|
|
* Indicates that you are beginning the process of redrawing @region.
|
|
* A backing store (offscreen buffer) large enough to contain @region
|
|
* will be created. The backing store will be initialized with the
|
|
* background color or background pixmap for @window. Then, all
|
|
* drawing operations performed on @window will be diverted to the
|
|
* backing store. When you call gdk_window_end_paint(), the backing
|
|
* store will be copied to @window, making it visible onscreen. Only
|
|
* the part of @window contained in @region will be modified; that is,
|
|
* drawing operations are clipped to @region.
|
|
*
|
|
* The net result of all this is to remove flicker, because the user
|
|
* sees the finished product appear all at once when you call
|
|
* gdk_window_end_paint(). If you draw to @window directly without
|
|
* calling gdk_window_begin_paint_region(), the user may see flicker
|
|
* as individual drawing operations are performed in sequence. The
|
|
* clipping and background-initializing features of
|
|
* gdk_window_begin_paint_region() are conveniences for the
|
|
* programmer, so you can avoid doing that work yourself.
|
|
*
|
|
* When using GTK+, the widget system automatically places calls to
|
|
* gdk_window_begin_paint_region() and gdk_window_end_paint() around
|
|
* emissions of the expose_event signal. That is, if you're writing an
|
|
* expose event handler, you can assume that the exposed area in
|
|
* #GdkEventExpose has already been cleared to the window background,
|
|
* is already set as the clip region, and already has a backing store.
|
|
* Therefore in most cases, application code need not call
|
|
* gdk_window_begin_paint_region(). (You can disable the automatic
|
|
* calls around expose events on a widget-by-widget basis by calling
|
|
* gtk_widget_set_double_buffered().)
|
|
*
|
|
* If you call this function multiple times before calling the
|
|
* matching gdk_window_end_paint(), the backing stores are pushed onto
|
|
* a stack. gdk_window_end_paint() copies the topmost backing store
|
|
* onscreen, subtracts the topmost region from all other regions in
|
|
* the stack, and pops the stack. All drawing operations affect only
|
|
* the topmost backing store in the stack. One matching call to
|
|
* gdk_window_end_paint() is required for each call to
|
|
* gdk_window_begin_paint_region().
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_begin_paint_region (GdkWindow *window,
|
|
GdkRegion *region)
|
|
{
|
|
#ifdef USE_BACKING_STORE
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
GdkRectangle clip_box;
|
|
GdkWindowPaint *paint;
|
|
GSList *list;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
if (GDK_WINDOW_DESTROYED (window))
|
|
return;
|
|
|
|
gdk_region_get_clipbox (region, &clip_box);
|
|
|
|
paint = g_new (GdkWindowPaint, 1);
|
|
paint->region = gdk_region_copy (region);
|
|
paint->x_offset = clip_box.x;
|
|
paint->y_offset = clip_box.y;
|
|
paint->pixmap =
|
|
gdk_pixmap_new (window,
|
|
MAX (clip_box.width, 1), MAX (clip_box.height, 1), -1);
|
|
|
|
for (list = private->paint_stack; list != NULL; list = list->next)
|
|
{
|
|
GdkWindowPaint *tmp_paint = list->data;
|
|
|
|
gdk_region_subtract (tmp_paint->region, paint->region);
|
|
}
|
|
|
|
private->paint_stack = g_slist_prepend (private->paint_stack, paint);
|
|
|
|
if (!gdk_region_empty (region))
|
|
{
|
|
gdk_window_clear_backing_rect (window,
|
|
clip_box.x, clip_box.y,
|
|
clip_box.width, clip_box.height);
|
|
}
|
|
#endif /* USE_BACKING_STORE */
|
|
}
|
|
|
|
/**
|
|
* gdk_window_end_paint:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Indicates that the backing store created by the most recent call to
|
|
* gdk_window_begin_paint_region() should be copied onscreen and
|
|
* deleted, leaving the next-most-recent backing store or no backing
|
|
* store at all as the active paint region. See
|
|
* gdk_window_begin_paint_region() for full details. It is an error to
|
|
* call this function without a matching
|
|
* gdk_window_begin_paint_region() first.
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_end_paint (GdkWindow *window)
|
|
{
|
|
#ifdef USE_BACKING_STORE
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
GdkWindowPaint *paint;
|
|
GdkGC *tmp_gc;
|
|
GdkRectangle clip_box;
|
|
gint x_offset, y_offset;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
if (GDK_WINDOW_DESTROYED (window))
|
|
return;
|
|
|
|
if (private->paint_stack == NULL)
|
|
{
|
|
g_warning (G_STRLOC": no preceding call to gdk_window_begin_paint_region(), see documentation");
|
|
return;
|
|
}
|
|
|
|
paint = private->paint_stack->data;
|
|
private->paint_stack = g_slist_delete_link (private->paint_stack,
|
|
private->paint_stack);
|
|
|
|
gdk_region_get_clipbox (paint->region, &clip_box);
|
|
|
|
tmp_gc = _gdk_drawable_get_scratch_gc (window, FALSE);
|
|
|
|
_gdk_windowing_window_get_offsets (window, &x_offset, &y_offset);
|
|
|
|
gdk_gc_set_clip_region (tmp_gc, paint->region);
|
|
gdk_gc_set_clip_origin (tmp_gc, - x_offset, - y_offset);
|
|
|
|
gdk_draw_drawable (private->impl, tmp_gc, paint->pixmap,
|
|
clip_box.x - paint->x_offset,
|
|
clip_box.y - paint->y_offset,
|
|
clip_box.x - x_offset, clip_box.y - y_offset,
|
|
clip_box.width, clip_box.height);
|
|
|
|
/* Reset clip region of the cached GdkGC */
|
|
gdk_gc_set_clip_region (tmp_gc, NULL);
|
|
|
|
g_object_unref (paint->pixmap);
|
|
gdk_region_destroy (paint->region);
|
|
g_free (paint);
|
|
#endif /* USE_BACKING_STORE */
|
|
}
|
|
|
|
static void
|
|
gdk_window_free_paint_stack (GdkWindow *window)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GSList *tmp_list = private->paint_stack;
|
|
|
|
while (tmp_list)
|
|
{
|
|
GdkWindowPaint *paint = tmp_list->data;
|
|
|
|
if (tmp_list == private->paint_stack)
|
|
g_object_unref (paint->pixmap);
|
|
|
|
gdk_region_destroy (paint->region);
|
|
g_free (paint);
|
|
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
g_slist_free (private->paint_stack);
|
|
private->paint_stack = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gdk_window_get_offsets (GdkWindow *window,
|
|
gint *x_offset,
|
|
gint *y_offset)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
*x_offset = paint->x_offset;
|
|
*y_offset = paint->y_offset;
|
|
}
|
|
else
|
|
_gdk_windowing_window_get_offsets (window, x_offset, y_offset);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_get_internal_paint_info:
|
|
* @window: a #GdkWindow
|
|
* @real_drawable: location to store the drawable to which drawing should be
|
|
* done.
|
|
* @x_offset: location to store the X offset between coordinates in @window,
|
|
* and the underlying window system primitive coordinates for
|
|
* *@real_drawable.
|
|
* @y_offset: location to store the Y offset between coordinates in @window,
|
|
* and the underlying window system primitive coordinates for
|
|
* *@real_drawable.
|
|
*
|
|
* If you bypass the GDK layer and use windowing system primitives to
|
|
* draw directly onto a #GdkWindow, then you need to deal with two
|
|
* details: there may be an offset between GDK coordinates and windowing
|
|
* system coordinates, and GDK may have redirected drawing to a offscreen
|
|
* pixmap as the result of a gdk_window_begin_paint_region() calls.
|
|
* This function allows retrieving the information you need to compensate
|
|
* for these effects.
|
|
*
|
|
* This function exposes details of the GDK implementation, and is thus
|
|
* likely to change in future releases of GDK.
|
|
**/
|
|
void
|
|
gdk_window_get_internal_paint_info (GdkWindow *window,
|
|
GdkDrawable **real_drawable,
|
|
gint *x_offset,
|
|
gint *y_offset)
|
|
{
|
|
gint x_off, y_off;
|
|
|
|
GdkWindowObject *private;
|
|
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
private = (GdkWindowObject *)window;
|
|
|
|
if (real_drawable)
|
|
{
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
*real_drawable = paint->pixmap;
|
|
}
|
|
else
|
|
*real_drawable = window;
|
|
}
|
|
|
|
gdk_window_get_offsets (window, &x_off, &y_off);
|
|
|
|
if (x_offset)
|
|
*x_offset = x_off;
|
|
if (y_offset)
|
|
*y_offset = y_off;
|
|
}
|
|
|
|
#define OFFSET_GC(gc) \
|
|
gint x_offset, y_offset; \
|
|
gint old_clip_x = gc->clip_x_origin; \
|
|
gint old_clip_y = gc->clip_y_origin; \
|
|
gint old_ts_x = gc->ts_x_origin; \
|
|
gint old_ts_y = gc->ts_y_origin; \
|
|
gdk_window_get_offsets (drawable, &x_offset, &y_offset); \
|
|
if (x_offset != 0 || y_offset != 0) \
|
|
{ \
|
|
gdk_gc_set_clip_origin (gc, old_clip_x - x_offset, \
|
|
old_clip_y - y_offset); \
|
|
gdk_gc_set_ts_origin (gc, old_ts_x - x_offset, \
|
|
old_ts_y - y_offset); \
|
|
}
|
|
|
|
#define RESTORE_GC(gc) \
|
|
if (x_offset != 0 || y_offset != 0) \
|
|
{ \
|
|
gdk_gc_set_clip_origin (gc, old_clip_x, old_clip_y); \
|
|
gdk_gc_set_ts_origin (gc, old_ts_x, old_ts_y); \
|
|
}
|
|
|
|
static GdkGC *
|
|
gdk_window_create_gc (GdkDrawable *drawable,
|
|
GdkGCValues *values,
|
|
GdkGCValuesMask mask)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_WINDOW (drawable), NULL);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return NULL;
|
|
|
|
return gdk_gc_new_with_values (((GdkWindowObject *) drawable)->impl,
|
|
values, mask);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_rectangle (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
gboolean filled,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_rectangle (paint->pixmap, gc, filled,
|
|
x - x_offset, y - y_offset, width, height);
|
|
}
|
|
else
|
|
gdk_draw_rectangle (private->impl, gc, filled,
|
|
x - x_offset, y - y_offset, width, height);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_arc (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
gboolean filled,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height,
|
|
gint angle1,
|
|
gint angle2)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_arc (paint->pixmap, gc, filled,
|
|
x - x_offset, y - y_offset,
|
|
width, height, angle1, angle2);
|
|
}
|
|
else
|
|
gdk_draw_arc (private->impl, gc, filled,
|
|
x - x_offset, y - y_offset,
|
|
width, height, angle1, angle2);
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_polygon (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
gboolean filled,
|
|
GdkPoint *points,
|
|
gint npoints)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
GdkPoint *new_points;
|
|
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (x_offset != 0 || y_offset != 0)
|
|
{
|
|
int i;
|
|
|
|
new_points = g_new (GdkPoint, npoints);
|
|
for (i=0; i<npoints; i++)
|
|
{
|
|
new_points[i].x = points[i].x - x_offset;
|
|
new_points[i].y = points[i].y - y_offset;
|
|
}
|
|
}
|
|
else
|
|
new_points = points;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_polygon (paint->pixmap, gc, filled, new_points, npoints);
|
|
|
|
}
|
|
else
|
|
gdk_draw_polygon (private->impl, gc, filled, new_points, npoints);
|
|
|
|
if (new_points != points)
|
|
g_free (new_points);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_text (GdkDrawable *drawable,
|
|
GdkFont *font,
|
|
GdkGC *gc,
|
|
gint x,
|
|
gint y,
|
|
const gchar *text,
|
|
gint text_length)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_text (paint->pixmap, font, gc,
|
|
x - x_offset, y - y_offset, text, text_length);
|
|
|
|
}
|
|
else
|
|
gdk_draw_text (private->impl, font, gc,
|
|
x - x_offset, y - y_offset, text, text_length);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_text_wc (GdkDrawable *drawable,
|
|
GdkFont *font,
|
|
GdkGC *gc,
|
|
gint x,
|
|
gint y,
|
|
const GdkWChar *text,
|
|
gint text_length)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_text_wc (paint->pixmap, font, gc,
|
|
x - x_offset, y - y_offset, text, text_length);
|
|
}
|
|
else
|
|
gdk_draw_text_wc (private->impl, font, gc,
|
|
x - x_offset, y - y_offset, text, text_length);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static GdkDrawable*
|
|
gdk_window_get_composite_drawable (GdkDrawable *drawable,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height,
|
|
gint *composite_x_offset,
|
|
gint *composite_y_offset)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
GSList *list;
|
|
GdkPixmap *tmp_pixmap;
|
|
GdkRectangle rect;
|
|
GdkGC *tmp_gc;
|
|
gboolean overlap_buffer;
|
|
|
|
_gdk_windowing_window_get_offsets (drawable,
|
|
composite_x_offset,
|
|
composite_y_offset);
|
|
|
|
if ((GDK_IS_WINDOW (drawable) && GDK_WINDOW_DESTROYED (drawable))
|
|
|| private->paint_stack == NULL)
|
|
{
|
|
/* No backing store */
|
|
return g_object_ref (drawable);
|
|
}
|
|
|
|
/* See if the buffered part is overlapping the part we want
|
|
* to get
|
|
*/
|
|
rect.x = x;
|
|
rect.y = y;
|
|
rect.width = width;
|
|
rect.height = height;
|
|
|
|
overlap_buffer = FALSE;
|
|
|
|
for (list = private->paint_stack; list != NULL; list = list->next)
|
|
{
|
|
GdkWindowPaint *paint = list->data;
|
|
GdkOverlapType overlap;
|
|
|
|
overlap = gdk_region_rect_in (paint->region, &rect);
|
|
|
|
if (overlap == GDK_OVERLAP_RECTANGLE_IN)
|
|
{
|
|
*composite_x_offset = paint->x_offset;
|
|
*composite_y_offset = paint->y_offset;
|
|
|
|
return g_object_ref (paint->pixmap);
|
|
}
|
|
else if (overlap == GDK_OVERLAP_RECTANGLE_PART)
|
|
{
|
|
overlap_buffer = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!overlap_buffer)
|
|
return g_object_ref (drawable);
|
|
|
|
tmp_pixmap = gdk_pixmap_new (drawable, width, height, -1);
|
|
tmp_gc = _gdk_drawable_get_scratch_gc (tmp_pixmap, FALSE);
|
|
|
|
/* Copy the current window contents */
|
|
gdk_draw_drawable (tmp_pixmap,
|
|
tmp_gc,
|
|
private->impl,
|
|
x - *composite_x_offset,
|
|
y - *composite_y_offset,
|
|
0, 0,
|
|
width, height);
|
|
|
|
/* paint the backing stores */
|
|
for (list = private->paint_stack; list != NULL; list = list->next)
|
|
{
|
|
GdkWindowPaint *paint = list->data;
|
|
|
|
gdk_gc_set_clip_region (tmp_gc, paint->region);
|
|
gdk_gc_set_clip_origin (tmp_gc, -x, -y);
|
|
|
|
gdk_draw_drawable (tmp_pixmap, tmp_gc, paint->pixmap,
|
|
x - paint->x_offset,
|
|
y - paint->y_offset,
|
|
0, 0, width, height);
|
|
}
|
|
|
|
/* Reset clip region of the cached GdkGC */
|
|
gdk_gc_set_clip_region (tmp_gc, NULL);
|
|
|
|
/* Set these to location of tmp_pixmap within the window */
|
|
*composite_x_offset = x;
|
|
*composite_y_offset = y;
|
|
|
|
return tmp_pixmap;
|
|
}
|
|
|
|
static GdkRegion*
|
|
gdk_window_get_clip_region (GdkDrawable *drawable)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
GdkRegion *result;
|
|
|
|
result = gdk_drawable_get_clip_region (private->impl);
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkRegion *paint_region = gdk_region_new ();
|
|
GSList *tmp_list = private->paint_stack;
|
|
|
|
while (tmp_list)
|
|
{
|
|
GdkWindowPaint *paint = tmp_list->data;
|
|
|
|
gdk_region_union (paint_region, paint->region);
|
|
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
gdk_region_intersect (result, paint_region);
|
|
gdk_region_destroy (paint_region);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static GdkRegion*
|
|
gdk_window_get_visible_region (GdkDrawable *drawable)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject*) drawable;
|
|
|
|
return gdk_drawable_get_visible_region (private->impl);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_drawable (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
GdkPixmap *src,
|
|
gint xsrc,
|
|
gint ysrc,
|
|
gint xdest,
|
|
gint ydest,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
/* If we have a backing pixmap draw to that */
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_drawable (paint->pixmap, gc,
|
|
src, xsrc, ysrc,
|
|
xdest - x_offset, ydest - y_offset, width, height);
|
|
|
|
}
|
|
else
|
|
gdk_draw_drawable (private->impl, gc,
|
|
src, xsrc, ysrc,
|
|
xdest - x_offset, ydest - y_offset,
|
|
width, height);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_points (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
GdkPoint *points,
|
|
gint npoints)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
GdkPoint *new_points;
|
|
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (x_offset != 0 || y_offset != 0)
|
|
{
|
|
gint i;
|
|
|
|
new_points = g_new (GdkPoint, npoints);
|
|
for (i=0; i<npoints; i++)
|
|
{
|
|
new_points[i].x = points[i].x - x_offset;
|
|
new_points[i].y = points[i].y - y_offset;
|
|
}
|
|
}
|
|
else
|
|
new_points = points;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_points (paint->pixmap, gc, new_points, npoints);
|
|
}
|
|
else
|
|
gdk_draw_points (private->impl, gc, points, npoints);
|
|
|
|
if (new_points != points)
|
|
g_free (new_points);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_segments (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
GdkSegment *segs,
|
|
gint nsegs)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
GdkSegment *new_segs;
|
|
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (x_offset != 0 || y_offset != 0)
|
|
{
|
|
gint i;
|
|
|
|
new_segs = g_new (GdkSegment, nsegs);
|
|
for (i=0; i<nsegs; i++)
|
|
{
|
|
new_segs[i].x1 = segs[i].x1 - x_offset;
|
|
new_segs[i].y1 = segs[i].y1 - y_offset;
|
|
new_segs[i].x2 = segs[i].x2 - x_offset;
|
|
new_segs[i].y2 = segs[i].y2 - y_offset;
|
|
}
|
|
}
|
|
else
|
|
new_segs = segs;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_segments (paint->pixmap, gc, new_segs, nsegs);
|
|
}
|
|
else
|
|
gdk_draw_segments (private->impl, gc, new_segs, nsegs);
|
|
|
|
if (new_segs != segs)
|
|
g_free (new_segs);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_lines (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
GdkPoint *points,
|
|
gint npoints)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
GdkPoint *new_points;
|
|
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (x_offset != 0 || y_offset != 0)
|
|
{
|
|
gint i;
|
|
|
|
new_points = g_new (GdkPoint, npoints);
|
|
for (i=0; i<npoints; i++)
|
|
{
|
|
new_points[i].x = points[i].x - x_offset;
|
|
new_points[i].y = points[i].y - y_offset;
|
|
}
|
|
}
|
|
else
|
|
new_points = points;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_lines (paint->pixmap, gc, new_points, npoints);
|
|
}
|
|
else
|
|
gdk_draw_lines (private->impl, gc, new_points, npoints);
|
|
|
|
if (new_points != points)
|
|
g_free (new_points);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_glyphs (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
PangoFont *font,
|
|
gint x,
|
|
gint y,
|
|
PangoGlyphString *glyphs)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
|
|
gdk_draw_glyphs (paint->pixmap, gc, font, x - x_offset, y - y_offset, glyphs);
|
|
}
|
|
else
|
|
gdk_draw_glyphs (private->impl, gc, font,
|
|
x - x_offset, y - y_offset, glyphs);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_glyphs_transformed (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
PangoMatrix *matrix,
|
|
PangoFont *font,
|
|
gint x,
|
|
gint y,
|
|
PangoGlyphString *glyphs)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
PangoMatrix tmp_matrix;
|
|
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (x_offset != 0 || y_offset != 0)
|
|
{
|
|
if (matrix)
|
|
{
|
|
tmp_matrix = *matrix;
|
|
tmp_matrix.x0 -= x_offset;
|
|
tmp_matrix.y0 -= y_offset;
|
|
matrix = &tmp_matrix;
|
|
}
|
|
else
|
|
{
|
|
x -= x_offset * PANGO_SCALE;
|
|
y -= y_offset * PANGO_SCALE;
|
|
}
|
|
}
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
|
|
gdk_draw_glyphs_transformed (paint->pixmap, gc, matrix, font, x, y, glyphs);
|
|
}
|
|
else
|
|
gdk_draw_glyphs_transformed (private->impl, gc, matrix, font, x, y, glyphs);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static GdkGC *
|
|
gdk_window_get_bg_gc (GdkWindow *window,
|
|
GdkWindowPaint *paint)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
|
|
guint gc_mask = 0;
|
|
GdkGCValues gc_values;
|
|
|
|
if (private->bg_pixmap == GDK_PARENT_RELATIVE_BG && private->parent)
|
|
{
|
|
GdkWindowPaint tmp_paint = *paint;
|
|
tmp_paint.x_offset += private->x;
|
|
tmp_paint.y_offset += private->y;
|
|
|
|
return gdk_window_get_bg_gc (GDK_WINDOW (private->parent), &tmp_paint);
|
|
}
|
|
else if (private->bg_pixmap &&
|
|
private->bg_pixmap != GDK_PARENT_RELATIVE_BG &&
|
|
private->bg_pixmap != GDK_NO_BG)
|
|
{
|
|
gc_values.fill = GDK_TILED;
|
|
gc_values.tile = private->bg_pixmap;
|
|
|
|
gc_mask = GDK_GC_FILL | GDK_GC_TILE;
|
|
|
|
return gdk_gc_new_with_values (paint->pixmap, &gc_values, gc_mask);
|
|
}
|
|
else
|
|
{
|
|
GdkGC *gc = _gdk_drawable_get_scratch_gc (paint->pixmap, FALSE);
|
|
|
|
gdk_gc_set_foreground (gc, &(private->bg_color));
|
|
|
|
return g_object_ref (gc);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gdk_window_clear_backing_rect (GdkWindow *window,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
GdkGC *tmp_gc;
|
|
|
|
if (GDK_WINDOW_DESTROYED (window))
|
|
return;
|
|
|
|
tmp_gc = gdk_window_get_bg_gc (window, paint);
|
|
gdk_gc_set_clip_region (tmp_gc, paint->region);
|
|
|
|
gdk_draw_rectangle (window, tmp_gc, TRUE,
|
|
x, y, width, height);
|
|
|
|
gdk_gc_set_clip_region (tmp_gc, NULL);
|
|
|
|
g_object_unref (tmp_gc);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_clear:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Clears an entire @window to the background color or background pixmap.
|
|
**/
|
|
void
|
|
gdk_window_clear (GdkWindow *window)
|
|
{
|
|
gint width, height;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
gdk_drawable_get_size (GDK_DRAWABLE (window), &width, &height);
|
|
|
|
gdk_window_clear_area (window, 0, 0,
|
|
width, height);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_clear_area:
|
|
* @window: a #GdkWindow
|
|
* @x: x coordinate of rectangle to clear
|
|
* @y: y coordinate of rectangle to clear
|
|
* @width: width of rectangle to clear
|
|
* @height: height of rectangle to clear
|
|
*
|
|
* Clears an area of @window to the background color or background pixmap.
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_clear_area (GdkWindow *window,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
if (private->paint_stack)
|
|
gdk_window_clear_backing_rect (window, x, y, width, height);
|
|
else
|
|
_gdk_windowing_window_clear_area (window, x, y, width, height);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_clear_area_e:
|
|
* @window: a #GdkWindow
|
|
* @x: x coordinate of rectangle to clear
|
|
* @y: y coordinate of rectangle to clear
|
|
* @width: width of rectangle to clear
|
|
* @height: height of rectangle to clear
|
|
*
|
|
* Like gdk_window_clear_area(), but also generates an expose event for
|
|
* the cleared area.
|
|
*
|
|
* This function has a stupid name because it dates back to the mists
|
|
* time, pre-GDK-1.0.
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_clear_area_e (GdkWindow *window,
|
|
gint x,
|
|
gint y,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
if (private->paint_stack)
|
|
gdk_window_clear_backing_rect (window, x, y, width, height);
|
|
|
|
_gdk_windowing_window_clear_area_e (window, x, y, width, height);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_image (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
GdkImage *image,
|
|
gint xsrc,
|
|
gint ysrc,
|
|
gint xdest,
|
|
gint ydest,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_image (paint->pixmap, gc, image, xsrc, ysrc,
|
|
xdest - x_offset, ydest - y_offset,
|
|
width, height);
|
|
|
|
}
|
|
else
|
|
gdk_draw_image (private->impl, gc, image, xsrc, ysrc,
|
|
xdest - x_offset, ydest - y_offset,
|
|
width, height);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_pixbuf (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
GdkPixbuf *pixbuf,
|
|
gint src_x,
|
|
gint src_y,
|
|
gint dest_x,
|
|
gint dest_y,
|
|
gint width,
|
|
gint height,
|
|
GdkRgbDither dither,
|
|
gint x_dither,
|
|
gint y_dither)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (gc)
|
|
{
|
|
OFFSET_GC (gc);
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_pixbuf (paint->pixmap, gc, pixbuf, src_x, src_y,
|
|
dest_x - x_offset, dest_y - y_offset,
|
|
width, height,
|
|
dither, x_dither - x_offset, y_dither - y_offset);
|
|
}
|
|
else
|
|
gdk_draw_pixbuf (private->impl, gc, pixbuf, src_x, src_y,
|
|
dest_x - x_offset, dest_y - y_offset,
|
|
width, height,
|
|
dither, x_dither, y_dither);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
else
|
|
{
|
|
gint x_offset, y_offset;
|
|
gdk_window_get_offsets (drawable, &x_offset, &y_offset);
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_pixbuf (paint->pixmap, gc, pixbuf, src_x, src_y,
|
|
dest_x - x_offset, dest_y - y_offset,
|
|
width, height,
|
|
dither, x_dither - x_offset, y_dither - y_offset);
|
|
}
|
|
else
|
|
gdk_draw_pixbuf (private->impl, gc, pixbuf, src_x, src_y,
|
|
dest_x - x_offset, dest_y - y_offset,
|
|
width, height,
|
|
dither, x_dither, y_dither);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gdk_window_draw_trapezoids (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
GdkTrapezoid *trapezoids,
|
|
gint n_trapezoids)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)drawable;
|
|
GdkTrapezoid *new_trapezoids = NULL;
|
|
|
|
OFFSET_GC (gc);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
if (x_offset != 0 || y_offset != 0)
|
|
{
|
|
gint i;
|
|
|
|
new_trapezoids = g_new (GdkTrapezoid, n_trapezoids);
|
|
for (i=0; i < n_trapezoids; i++)
|
|
{
|
|
new_trapezoids[i].y1 = trapezoids[i].y1 - y_offset;
|
|
new_trapezoids[i].x11 = trapezoids[i].x11 - x_offset;
|
|
new_trapezoids[i].x21 = trapezoids[i].x21 - x_offset;
|
|
new_trapezoids[i].y2 = trapezoids[i].y2 - y_offset;
|
|
new_trapezoids[i].x12 = trapezoids[i].x12 - x_offset;
|
|
new_trapezoids[i].x22 = trapezoids[i].x22 - x_offset;
|
|
}
|
|
|
|
trapezoids = new_trapezoids;
|
|
}
|
|
|
|
if (private->paint_stack)
|
|
{
|
|
GdkWindowPaint *paint = private->paint_stack->data;
|
|
gdk_draw_trapezoids (paint->pixmap, gc, trapezoids, n_trapezoids);
|
|
}
|
|
else
|
|
gdk_draw_trapezoids (private->impl, gc, trapezoids, n_trapezoids);
|
|
|
|
if (new_trapezoids)
|
|
g_free (new_trapezoids);
|
|
|
|
RESTORE_GC (gc);
|
|
}
|
|
|
|
static void
|
|
gdk_window_real_get_size (GdkDrawable *drawable,
|
|
gint *width,
|
|
gint *height)
|
|
{
|
|
g_return_if_fail (GDK_IS_WINDOW (drawable));
|
|
|
|
gdk_drawable_get_size (GDK_WINDOW_OBJECT (drawable)->impl,
|
|
width, height);
|
|
}
|
|
|
|
static GdkVisual*
|
|
gdk_window_real_get_visual (GdkDrawable *drawable)
|
|
{
|
|
GdkColormap *colormap;
|
|
|
|
g_return_val_if_fail (GDK_IS_WINDOW (drawable), NULL);
|
|
|
|
colormap = gdk_drawable_get_colormap (drawable);
|
|
return colormap ? gdk_colormap_get_visual (colormap) : NULL;
|
|
}
|
|
|
|
static gint
|
|
gdk_window_real_get_depth (GdkDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_WINDOW (drawable), 0);
|
|
|
|
return ((GdkWindowObject *)GDK_WINDOW (drawable))->depth;
|
|
}
|
|
|
|
static GdkScreen*
|
|
gdk_window_real_get_screen (GdkDrawable *drawable)
|
|
{
|
|
return gdk_drawable_get_screen (GDK_WINDOW_OBJECT (drawable)->impl);
|
|
}
|
|
|
|
static void
|
|
gdk_window_real_set_colormap (GdkDrawable *drawable,
|
|
GdkColormap *cmap)
|
|
{
|
|
g_return_if_fail (GDK_IS_WINDOW (drawable));
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return;
|
|
|
|
gdk_drawable_set_colormap (((GdkWindowObject*)drawable)->impl, cmap);
|
|
}
|
|
|
|
static GdkColormap*
|
|
gdk_window_real_get_colormap (GdkDrawable *drawable)
|
|
{
|
|
g_return_val_if_fail (GDK_IS_WINDOW (drawable), NULL);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return NULL;
|
|
|
|
return gdk_drawable_get_colormap (((GdkWindowObject*)drawable)->impl);
|
|
}
|
|
|
|
static GdkImage*
|
|
gdk_window_copy_to_image (GdkDrawable *drawable,
|
|
GdkImage *image,
|
|
gint src_x,
|
|
gint src_y,
|
|
gint dest_x,
|
|
gint dest_y,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
gint x_offset, y_offset;
|
|
|
|
g_return_val_if_fail (GDK_IS_WINDOW (drawable), NULL);
|
|
|
|
if (GDK_WINDOW_DESTROYED (drawable))
|
|
return NULL;
|
|
|
|
/* If we're here, a composite image was not necessary, so
|
|
* we can ignore the paint stack.
|
|
*/
|
|
|
|
_gdk_windowing_window_get_offsets (drawable, &x_offset, &y_offset);
|
|
|
|
return gdk_drawable_copy_to_image (((GdkWindowObject*)drawable)->impl,
|
|
image,
|
|
src_x - x_offset,
|
|
src_y - y_offset,
|
|
dest_x, dest_y,
|
|
width, height);
|
|
}
|
|
|
|
/* Code for dirty-region queueing
|
|
*/
|
|
static GSList *update_windows = NULL;
|
|
static guint update_idle = 0;
|
|
static gboolean debug_updates = FALSE;
|
|
|
|
static gboolean
|
|
gdk_window_update_idle (gpointer data)
|
|
{
|
|
GDK_THREADS_ENTER ();
|
|
gdk_window_process_all_updates ();
|
|
GDK_THREADS_LEAVE ();
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gdk_window_schedule_update (GdkWindow *window)
|
|
{
|
|
if (window && GDK_WINDOW_OBJECT (window)->update_freeze_count)
|
|
return;
|
|
|
|
if (!update_idle)
|
|
{
|
|
update_idle = g_idle_add_full (GDK_PRIORITY_REDRAW,
|
|
gdk_window_update_idle, NULL, NULL);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gdk_window_process_updates_internal (GdkWindow *window)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
gboolean save_region = FALSE;
|
|
|
|
/* If an update got queued during update processing, we can get a
|
|
* window in the update queue that has an empty update_area.
|
|
* just ignore it.
|
|
*/
|
|
if (private->update_area)
|
|
{
|
|
GdkRegion *update_area = private->update_area;
|
|
private->update_area = NULL;
|
|
|
|
if (_gdk_event_func && gdk_window_is_viewable (window))
|
|
{
|
|
GdkRectangle window_rect;
|
|
GdkRegion *expose_region;
|
|
GdkRegion *window_region;
|
|
gint width, height;
|
|
|
|
if (debug_updates)
|
|
{
|
|
/* Make sure we see the red invalid area before redrawing. */
|
|
gdk_display_sync (gdk_drawable_get_display (window));
|
|
g_usleep (70000);
|
|
}
|
|
|
|
save_region = _gdk_windowing_window_queue_antiexpose (window, update_area);
|
|
|
|
if (save_region)
|
|
expose_region = gdk_region_copy (update_area);
|
|
else
|
|
expose_region = update_area;
|
|
|
|
gdk_drawable_get_size (GDK_DRAWABLE (private), &width, &height);
|
|
|
|
window_rect.x = 0;
|
|
window_rect.y = 0;
|
|
window_rect.width = width;
|
|
window_rect.height = height;
|
|
|
|
window_region = gdk_region_rectangle (&window_rect);
|
|
gdk_region_intersect (expose_region,
|
|
window_region);
|
|
gdk_region_destroy (window_region);
|
|
|
|
if (!gdk_region_empty (expose_region) &&
|
|
(private->event_mask & GDK_EXPOSURE_MASK))
|
|
{
|
|
GdkEvent event;
|
|
|
|
event.expose.type = GDK_EXPOSE;
|
|
event.expose.window = g_object_ref (window);
|
|
event.expose.count = 0;
|
|
event.expose.region = expose_region;
|
|
gdk_region_get_clipbox (expose_region, &event.expose.area);
|
|
|
|
(*_gdk_event_func) (&event, _gdk_event_data);
|
|
|
|
g_object_unref (window);
|
|
}
|
|
|
|
if (expose_region != update_area)
|
|
gdk_region_destroy (expose_region);
|
|
}
|
|
if (!save_region)
|
|
gdk_region_destroy (update_area);
|
|
}
|
|
}
|
|
|
|
static void
|
|
flush_all_displays (void)
|
|
{
|
|
GSList *displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
|
|
GSList *tmp_list;
|
|
|
|
for (tmp_list = displays; tmp_list; tmp_list = tmp_list->next)
|
|
gdk_display_flush (tmp_list->data);
|
|
|
|
g_slist_free (displays);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_process_all_updates:
|
|
*
|
|
* Calls gdk_window_process_updates() for all windows (see #GdkWindow)
|
|
* in the application.
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_process_all_updates (void)
|
|
{
|
|
GSList *old_update_windows = update_windows;
|
|
GSList *tmp_list = update_windows;
|
|
|
|
if (update_idle)
|
|
g_source_remove (update_idle);
|
|
|
|
update_windows = NULL;
|
|
update_idle = 0;
|
|
|
|
g_slist_foreach (old_update_windows, (GFunc)g_object_ref, NULL);
|
|
|
|
while (tmp_list)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)tmp_list->data;
|
|
|
|
if (private->update_freeze_count)
|
|
update_windows = g_slist_prepend (update_windows, private);
|
|
else
|
|
gdk_window_process_updates_internal (tmp_list->data);
|
|
|
|
g_object_unref (tmp_list->data);
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
g_slist_free (old_update_windows);
|
|
|
|
flush_all_displays ();
|
|
}
|
|
|
|
/**
|
|
* gdk_window_process_updates:
|
|
* @window: a #GdkWindow
|
|
* @update_children: whether to also process updates for child windows
|
|
*
|
|
* Sends one or more expose events to @window. The areas in each
|
|
* expose event will cover the entire update area for the window (see
|
|
* gdk_window_invalidate_region() for details). Normally GDK calls
|
|
* gdk_window_process_all_updates() on your behalf, so there's no
|
|
* need to call this function unless you want to force expose events
|
|
* to be delivered immediately and synchronously (vs. the usual
|
|
* case, where GDK delivers them in an idle handler). Occasionally
|
|
* this is useful to produce nicer scrolling behavior, for example.
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_process_updates (GdkWindow *window,
|
|
gboolean update_children)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
if (private->update_area && !private->update_freeze_count)
|
|
{
|
|
gdk_window_process_updates_internal (window);
|
|
update_windows = g_slist_remove (update_windows, window);
|
|
}
|
|
|
|
if (update_children)
|
|
{
|
|
GList *tmp_list = private->children;
|
|
while (tmp_list)
|
|
{
|
|
gdk_window_process_updates (tmp_list->data, TRUE);
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gdk_window_invalidate_rect:
|
|
* @window: a #GdkWindow
|
|
* @rect: rectangle to invalidate
|
|
* @invalidate_children: whether to also invalidate child windows
|
|
*
|
|
* A convenience wrapper around gdk_window_invalidate_region() which
|
|
* invalidates a rectangular region. See
|
|
* gdk_window_invalidate_region() for details.
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_invalidate_rect (GdkWindow *window,
|
|
GdkRectangle *rect,
|
|
gboolean invalidate_children)
|
|
{
|
|
GdkRectangle window_rect;
|
|
GdkRegion *region;
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
if (GDK_WINDOW_DESTROYED (window))
|
|
return;
|
|
|
|
if (private->input_only || !GDK_WINDOW_IS_MAPPED (window))
|
|
return;
|
|
|
|
if (!rect)
|
|
{
|
|
window_rect.x = 0;
|
|
window_rect.y = 0;
|
|
gdk_drawable_get_size (GDK_DRAWABLE (window),
|
|
&window_rect.width,
|
|
&window_rect.height);
|
|
rect = &window_rect;
|
|
}
|
|
|
|
region = gdk_region_rectangle (rect);
|
|
gdk_window_invalidate_region (window, region, invalidate_children);
|
|
gdk_region_destroy (region);
|
|
}
|
|
|
|
static void
|
|
draw_ugly_color (GdkWindow *window,
|
|
GdkRegion *region)
|
|
{
|
|
/* Draw ugly color all over the newly-invalid region */
|
|
GdkColor ugly_color = { 0, 50000, 10000, 10000 };
|
|
GdkGC *ugly_gc;
|
|
GdkRectangle clipbox;
|
|
|
|
ugly_gc = gdk_gc_new (window);
|
|
gdk_gc_set_rgb_fg_color (ugly_gc, &ugly_color);
|
|
gdk_gc_set_clip_region (ugly_gc, region);
|
|
|
|
gdk_region_get_clipbox (region, &clipbox);
|
|
|
|
gdk_draw_rectangle (window,
|
|
ugly_gc,
|
|
TRUE,
|
|
clipbox.x, clipbox.y,
|
|
clipbox.width, clipbox.height);
|
|
|
|
g_object_unref (ugly_gc);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_invalidate_maybe_recurse:
|
|
* @window: a #GdkWindow
|
|
* @region: a #GdkRegion
|
|
* @child_func: function to use to decide if to recurse to a child,
|
|
* %NULL means never recurse.
|
|
* @user_data: data passed to @child_func
|
|
*
|
|
* Adds @region to the update area for @window. The update area is the
|
|
* region that needs to be redrawn, or "dirty region." The call
|
|
* gdk_window_process_updates() sends one or more expose events to the
|
|
* window, which together cover the entire update area. An
|
|
* application would normally redraw the contents of @window in
|
|
* response to those expose events.
|
|
*
|
|
* GDK will call gdk_window_process_all_updates() on your behalf
|
|
* whenever your program returns to the main loop and becomes idle, so
|
|
* normally there's no need to do that manually, you just need to
|
|
* invalidate regions that you know should be redrawn.
|
|
*
|
|
* The @child_func parameter controls whether the region of
|
|
* each child window that intersects @region will also be invalidated.
|
|
* Only children for which @child_func returns TRUE will have the area
|
|
* invalidated.
|
|
**/
|
|
void
|
|
gdk_window_invalidate_maybe_recurse (GdkWindow *window,
|
|
GdkRegion *region,
|
|
gboolean (*child_func) (GdkWindow *, gpointer),
|
|
gpointer user_data)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
GdkRegion *visible_region;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
if (GDK_WINDOW_DESTROYED (window))
|
|
return;
|
|
|
|
if (private->input_only || !GDK_WINDOW_IS_MAPPED (window))
|
|
return;
|
|
|
|
visible_region = gdk_drawable_get_visible_region (window);
|
|
gdk_region_intersect (visible_region, region);
|
|
|
|
if (!gdk_region_empty (visible_region))
|
|
{
|
|
if (debug_updates)
|
|
draw_ugly_color (window, region);
|
|
|
|
if (private->update_area)
|
|
{
|
|
gdk_region_union (private->update_area, visible_region);
|
|
}
|
|
else
|
|
{
|
|
update_windows = g_slist_prepend (update_windows, window);
|
|
private->update_area = gdk_region_copy (visible_region);
|
|
|
|
gdk_window_schedule_update (window);
|
|
}
|
|
|
|
if (child_func)
|
|
{
|
|
GList *tmp_list;
|
|
|
|
tmp_list = private->children;
|
|
while (tmp_list)
|
|
{
|
|
GdkWindowObject *child = tmp_list->data;
|
|
tmp_list = tmp_list->next;
|
|
|
|
if (!child->input_only && (*child_func) ((GdkWindow *)child, user_data))
|
|
{
|
|
GdkRegion *child_region;
|
|
gint x, y;
|
|
|
|
gdk_window_get_position ((GdkWindow *)child, &x, &y);
|
|
|
|
/* This copy could be saved with a little more complexity */
|
|
child_region = gdk_region_copy (visible_region);
|
|
gdk_region_offset (child_region, - x, - y);
|
|
|
|
gdk_window_invalidate_maybe_recurse ((GdkWindow *)child, child_region, child_func, user_data);
|
|
|
|
gdk_region_destroy (child_region);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
gdk_region_destroy (visible_region);
|
|
}
|
|
|
|
static gboolean
|
|
true_predicate (GdkWindow *window,
|
|
gpointer user_data)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_invalidate_region:
|
|
* @window: a #GdkWindow
|
|
* @region: a #GdkRegion
|
|
* @invalidate_children: %TRUE to also invalidate child windows
|
|
*
|
|
* Adds @region to the update area for @window. The update area is the
|
|
* region that needs to be redrawn, or "dirty region." The call
|
|
* gdk_window_process_updates() sends one or more expose events to the
|
|
* window, which together cover the entire update area. An
|
|
* application would normally redraw the contents of @window in
|
|
* response to those expose events.
|
|
*
|
|
* GDK will call gdk_window_process_all_updates() on your behalf
|
|
* whenever your program returns to the main loop and becomes idle, so
|
|
* normally there's no need to do that manually, you just need to
|
|
* invalidate regions that you know should be redrawn.
|
|
*
|
|
* The @invalidate_children parameter controls whether the region of
|
|
* each child window that intersects @region will also be invalidated.
|
|
* If %FALSE, then the update area for child windows will remain
|
|
* unaffected. See gdk_window_invalidate_maybe_recurse if you need
|
|
* fine grained control over which children are invalidated.
|
|
**/
|
|
void
|
|
gdk_window_invalidate_region (GdkWindow *window,
|
|
GdkRegion *region,
|
|
gboolean invalidate_children)
|
|
{
|
|
gdk_window_invalidate_maybe_recurse (window, region,
|
|
invalidate_children ?
|
|
true_predicate : (gboolean (*) (GdkWindow *, gpointer))NULL,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_get_update_area:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Transfers ownership of the update area from @window to the caller
|
|
* of the function. That is, after calling this function, @window will
|
|
* no longer have an invalid/dirty region; the update area is removed
|
|
* from @window and handed to you. If a window has no update area,
|
|
* gdk_window_get_update_area() returns %NULL. You are responsible for
|
|
* calling gdk_region_destroy() on the returned region if it's non-%NULL.
|
|
*
|
|
* Return value: the update area for @window
|
|
**/
|
|
GdkRegion *
|
|
gdk_window_get_update_area (GdkWindow *window)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
GdkRegion *tmp_region;
|
|
|
|
g_return_val_if_fail (window != NULL, NULL);
|
|
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
|
|
|
|
if (private->update_area)
|
|
{
|
|
tmp_region = private->update_area;
|
|
private->update_area = NULL;
|
|
|
|
update_windows = g_slist_remove (update_windows, window);
|
|
|
|
return tmp_region;
|
|
}
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* _gdk_window_clear_update_area:
|
|
* @window: a #GdkWindow.
|
|
*
|
|
* Internal function to clear the update area for a window. This
|
|
* is called when the window is hidden or destroyed.
|
|
**/
|
|
void
|
|
_gdk_window_clear_update_area (GdkWindow *window)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
if (private->update_area)
|
|
{
|
|
update_windows = g_slist_remove (update_windows, window);
|
|
|
|
gdk_region_destroy (private->update_area);
|
|
private->update_area = NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gdk_window_freeze_updates:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Temporarily freezes a window such that it won't receive expose
|
|
* events. The window will begin receiving expose events again when
|
|
* gdk_window_thaw_updates() is called. If gdk_window_freeze_updates()
|
|
* has been called more than once, gdk_window_thaw_updates() must be called
|
|
* an equal number of times to begin processing exposes.
|
|
**/
|
|
void
|
|
gdk_window_freeze_updates (GdkWindow *window)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
|
|
private->update_freeze_count++;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_thaw_updates:
|
|
* @window: a #GdkWindow
|
|
*
|
|
* Thaws a window frozen with gdk_window_freeze_updates().
|
|
**/
|
|
void
|
|
gdk_window_thaw_updates (GdkWindow *window)
|
|
{
|
|
GdkWindowObject *private = (GdkWindowObject *)window;
|
|
|
|
g_return_if_fail (window != NULL);
|
|
g_return_if_fail (GDK_IS_WINDOW (window));
|
|
g_return_if_fail (private->update_freeze_count > 0);
|
|
|
|
if (--private->update_freeze_count == 0)
|
|
gdk_window_schedule_update (window);
|
|
}
|
|
|
|
/**
|
|
* gdk_window_set_debug_updates:
|
|
* @setting: %TRUE to turn on update debugging
|
|
*
|
|
* With update debugging enabled, calls to
|
|
* gdk_window_invalidate_region() clear the invalidated region of the
|
|
* screen to a noticeable color, and GDK pauses for a short time
|
|
* before sending exposes to windows during
|
|
* gdk_window_process_updates(). The net effect is that you can see
|
|
* the invalid region for each window and watch redraws as they
|
|
* occur. This allows you to diagnose inefficiencies in your application.
|
|
*
|
|
* In essence, because the GDK rendering model prevents all flicker,
|
|
* if you are redrawing the same region 400 times you may never
|
|
* notice, aside from noticing a speed problem. Enabling update
|
|
* debugging causes GTK to flicker slowly and noticeably, so you can
|
|
* see exactly what's being redrawn when, in what order.
|
|
*
|
|
* The --gtk-debug=updates command line option passed to GTK+ programs
|
|
* enables this debug option at application startup time. That's
|
|
* usually more useful than calling gdk_window_set_debug_updates()
|
|
* yourself, though you might want to use this function to enable
|
|
* updates sometime after application startup time.
|
|
*
|
|
**/
|
|
void
|
|
gdk_window_set_debug_updates (gboolean setting)
|
|
{
|
|
debug_updates = setting;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_constrain_size:
|
|
* @geometry: a #GdkGeometry structure
|
|
* @flags: a mask indicating what portions of @geometry are set
|
|
* @width: desired width of window
|
|
* @height: desired height of the window
|
|
* @new_width: location to store resulting width
|
|
* @new_height: location to store resulting height
|
|
*
|
|
* Constrains a desired width and height according to a
|
|
* set of geometry hints (such as minimum and maximum size).
|
|
*/
|
|
void
|
|
gdk_window_constrain_size (GdkGeometry *geometry,
|
|
guint flags,
|
|
gint width,
|
|
gint height,
|
|
gint *new_width,
|
|
gint *new_height)
|
|
{
|
|
/* This routine is partially borrowed from fvwm.
|
|
*
|
|
* Copyright 1993, Robert Nation
|
|
* You may use this code for any purpose, as long as the original
|
|
* copyright remains in the source code and all documentation
|
|
*
|
|
* which in turn borrows parts of the algorithm from uwm
|
|
*/
|
|
gint min_width = 0;
|
|
gint min_height = 0;
|
|
gint base_width = 0;
|
|
gint base_height = 0;
|
|
gint xinc = 1;
|
|
gint yinc = 1;
|
|
gint max_width = G_MAXINT;
|
|
gint max_height = G_MAXINT;
|
|
|
|
#define FLOOR(value, base) ( ((gint) ((value) / (base))) * (base) )
|
|
|
|
if ((flags & GDK_HINT_BASE_SIZE) && (flags & GDK_HINT_MIN_SIZE))
|
|
{
|
|
base_width = geometry->base_width;
|
|
base_height = geometry->base_height;
|
|
min_width = geometry->min_width;
|
|
min_height = geometry->min_height;
|
|
}
|
|
else if (flags & GDK_HINT_BASE_SIZE)
|
|
{
|
|
base_width = geometry->base_width;
|
|
base_height = geometry->base_height;
|
|
min_width = geometry->base_width;
|
|
min_height = geometry->base_height;
|
|
}
|
|
else if (flags & GDK_HINT_MIN_SIZE)
|
|
{
|
|
base_width = geometry->min_width;
|
|
base_height = geometry->min_height;
|
|
min_width = geometry->min_width;
|
|
min_height = geometry->min_height;
|
|
}
|
|
|
|
if (flags & GDK_HINT_MAX_SIZE)
|
|
{
|
|
max_width = geometry->max_width ;
|
|
max_height = geometry->max_height;
|
|
}
|
|
|
|
if (flags & GDK_HINT_RESIZE_INC)
|
|
{
|
|
xinc = MAX (xinc, geometry->width_inc);
|
|
yinc = MAX (yinc, geometry->height_inc);
|
|
}
|
|
|
|
/* clamp width and height to min and max values
|
|
*/
|
|
width = CLAMP (width, min_width, max_width);
|
|
height = CLAMP (height, min_height, max_height);
|
|
|
|
/* shrink to base + N * inc
|
|
*/
|
|
width = base_width + FLOOR (width - base_width, xinc);
|
|
height = base_height + FLOOR (height - base_height, yinc);
|
|
|
|
/* constrain aspect ratio, according to:
|
|
*
|
|
* width
|
|
* min_aspect <= -------- <= max_aspect
|
|
* height
|
|
*/
|
|
|
|
if (flags & GDK_HINT_ASPECT &&
|
|
geometry->min_aspect > 0 &&
|
|
geometry->max_aspect > 0)
|
|
{
|
|
gint delta;
|
|
|
|
if (geometry->min_aspect * height > width)
|
|
{
|
|
delta = FLOOR (height - width / geometry->min_aspect, yinc);
|
|
if (height - delta >= min_height)
|
|
height -= delta;
|
|
else
|
|
{
|
|
delta = FLOOR (height * geometry->min_aspect - width, xinc);
|
|
if (width + delta <= max_width)
|
|
width += delta;
|
|
}
|
|
}
|
|
|
|
if (geometry->max_aspect * height < width)
|
|
{
|
|
delta = FLOOR (width - height * geometry->max_aspect, xinc);
|
|
if (width - delta >= min_width)
|
|
width -= delta;
|
|
else
|
|
{
|
|
delta = FLOOR (width / geometry->max_aspect - height, yinc);
|
|
if (height + delta <= max_height)
|
|
height += delta;
|
|
}
|
|
}
|
|
}
|
|
|
|
#undef FLOOR
|
|
|
|
*new_width = width;
|
|
*new_height = height;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_get_pointer:
|
|
* @window: a #GdkWindow
|
|
* @x: return location for X coordinate of pointer
|
|
* @y: return location for Y coordinate of pointer
|
|
* @mask: return location for modifier mask
|
|
*
|
|
* Obtains the current pointer position and modifier state.
|
|
* The position is given in coordinates relative to @window.
|
|
*
|
|
* Return value: the window containing the pointer (as with
|
|
* gdk_window_at_pointer()), or %NULL if the window containing the
|
|
* pointer isn't known to GDK
|
|
**/
|
|
GdkWindow*
|
|
gdk_window_get_pointer (GdkWindow *window,
|
|
gint *x,
|
|
gint *y,
|
|
GdkModifierType *mask)
|
|
{
|
|
GdkDisplay *display;
|
|
gint tmp_x, tmp_y;
|
|
GdkModifierType tmp_mask;
|
|
GdkWindow *child;
|
|
|
|
g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
|
|
|
|
if (window)
|
|
{
|
|
display = gdk_drawable_get_display (window);
|
|
}
|
|
else
|
|
{
|
|
GdkScreen *screen = gdk_screen_get_default ();
|
|
|
|
display = gdk_screen_get_display (screen);
|
|
window = gdk_screen_get_root_window (screen);
|
|
|
|
GDK_NOTE (MULTIHEAD,
|
|
g_message ("Passing NULL for window to gdk_window_get_pointer()\n"
|
|
"is not multihead safe"));
|
|
}
|
|
|
|
child = display->pointer_hooks->window_get_pointer (display, window, &tmp_x, &tmp_y, &tmp_mask);
|
|
|
|
if (x)
|
|
*x = tmp_x;
|
|
if (y)
|
|
*y = tmp_y;
|
|
if (mask)
|
|
*mask = tmp_mask;
|
|
|
|
return child;
|
|
}
|
|
|
|
/**
|
|
* gdk_window_at_pointer:
|
|
* @win_x: return location for origin of the window under the pointer
|
|
* @win_y: return location for origin of the window under the pointer
|
|
*
|
|
* Obtains the window underneath the mouse pointer, returning the
|
|
* location of that window in @win_x, @win_y. Returns %NULL if the
|
|
* window under the mouse pointer is not known to GDK (if the window
|
|
* belongs to another application and a #GdkWindow hasn't been created
|
|
* for it with gdk_window_foreign_new())
|
|
*
|
|
* NOTE: For multihead-aware widgets or applications use
|
|
* gdk_display_get_window_at_pointer() instead.
|
|
*
|
|
* Return value: window under the mouse pointer
|
|
**/
|
|
GdkWindow*
|
|
gdk_window_at_pointer (gint *win_x,
|
|
gint *win_y)
|
|
{
|
|
return gdk_display_get_window_at_pointer (gdk_display_get_default (), win_x, win_y);
|
|
}
|
|
|
|
/**
|
|
* gdk_get_default_root_window:
|
|
*
|
|
* Obtains the root window (parent all other windows are inside)
|
|
* for the default display and screen.
|
|
*
|
|
* Return value: the default root window
|
|
**/
|
|
GdkWindow *
|
|
gdk_get_default_root_window (void)
|
|
{
|
|
return gdk_screen_get_root_window (gdk_screen_get_default ());
|
|
}
|
|
|
|
/**
|
|
* gdk_window_foreign_new:
|
|
* @anid: a native window handle.
|
|
*
|
|
* Wraps a native window for the default display in a #GdkWindow.
|
|
* This may fail if the window has been destroyed.
|
|
*
|
|
* For example in the X backend, a native window handle is an Xlib
|
|
* <type>XID</type>.
|
|
*
|
|
* Return value: the newly-created #GdkWindow wrapper for the
|
|
* native window or %NULL if the window has been destroyed.
|
|
**/
|
|
GdkWindow *
|
|
gdk_window_foreign_new (GdkNativeWindow anid)
|
|
{
|
|
return gdk_window_foreign_new_for_display (gdk_display_get_default (), anid);
|
|
}
|
|
|