forked from AuroraMiddleware/gtk
fd200f07f5
I don't think it's necessary to clear the backing surface when showing the window, as we're going to repaint it anyway. If it's needed, we can implement it again using internal APIs, as the public window_clear() APIs are going away.
711 lines
18 KiB
C
711 lines
18 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 1997-2005. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include <config.h>
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#include <math.h>
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#include "gdk.h"
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#include "gdkwindow.h"
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#include "gdkinternals.h"
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#include "gdkwindowimpl.h"
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#include "gdkdrawable.h"
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#include "gdktypes.h"
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#include "gdkscreen.h"
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#include "gdkcolor.h"
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/* LIMITATIONS:
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*
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* Offscreen windows can't be the child of a foreign window,
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* nor contain foreign windows
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* GDK_POINTER_MOTION_HINT_MASK isn't effective
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*/
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typedef struct _GdkOffscreenWindow GdkOffscreenWindow;
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typedef struct _GdkOffscreenWindowClass GdkOffscreenWindowClass;
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struct _GdkOffscreenWindow
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{
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GdkDrawable parent_instance;
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GdkWindow *wrapper;
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GdkScreen *screen;
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cairo_surface_t *surface;
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GdkWindow *embedder;
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};
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struct _GdkOffscreenWindowClass
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{
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GdkDrawableClass parent_class;
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};
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#define GDK_TYPE_OFFSCREEN_WINDOW (gdk_offscreen_window_get_type())
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#define GDK_OFFSCREEN_WINDOW(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_OFFSCREEN_WINDOW, GdkOffscreenWindow))
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#define GDK_IS_OFFSCREEN_WINDOW(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_OFFSCREEN_WINDOW))
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#define GDK_OFFSCREEN_WINDOW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_OFFSCREEN_WINDOW, GdkOffscreenWindowClass))
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#define GDK_IS_OFFSCREEN_WINDOW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_OFFSCREEN_WINDOW))
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#define GDK_OFFSCREEN_WINDOW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_OFFSCREEN_WINDOW, GdkOffscreenWindowClass))
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static void gdk_offscreen_window_impl_iface_init (GdkWindowImplIface *iface);
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static void gdk_offscreen_window_hide (GdkWindow *window);
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G_DEFINE_TYPE_WITH_CODE (GdkOffscreenWindow,
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gdk_offscreen_window,
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GDK_TYPE_DRAWABLE,
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G_IMPLEMENT_INTERFACE (GDK_TYPE_WINDOW_IMPL,
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gdk_offscreen_window_impl_iface_init));
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static void
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gdk_offscreen_window_finalize (GObject *object)
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{
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GdkOffscreenWindow *offscreen = GDK_OFFSCREEN_WINDOW (object);
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cairo_surface_destroy (offscreen->surface);
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G_OBJECT_CLASS (gdk_offscreen_window_parent_class)->finalize (object);
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}
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static void
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gdk_offscreen_window_init (GdkOffscreenWindow *window)
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{
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}
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static void
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gdk_offscreen_window_destroy (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 = GDK_WINDOW_OBJECT (window);
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GdkOffscreenWindow *offscreen;
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offscreen = GDK_OFFSCREEN_WINDOW (private->impl);
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gdk_offscreen_window_set_embedder (window, NULL);
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if (!recursing)
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gdk_offscreen_window_hide (window);
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}
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static gboolean
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is_parent_of (GdkWindow *parent,
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GdkWindow *child)
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{
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GdkWindow *w;
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w = child;
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while (w != NULL)
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{
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if (w == parent)
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return TRUE;
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w = gdk_window_get_parent (w);
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}
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return FALSE;
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}
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static cairo_surface_t *
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gdk_offscreen_window_ref_cairo_surface (GdkDrawable *drawable)
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{
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GdkOffscreenWindow *offscreen = GDK_OFFSCREEN_WINDOW (drawable);
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return cairo_surface_reference (offscreen->surface);
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}
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void
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_gdk_offscreen_window_new (GdkWindow *window,
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GdkScreen *screen,
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GdkWindowAttr *attributes,
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gint attributes_mask)
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{
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GdkWindowObject *private;
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GdkOffscreenWindow *offscreen;
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g_return_if_fail (attributes != NULL);
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if (attributes->wclass != GDK_INPUT_OUTPUT)
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return; /* Can't support input only offscreens */
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private = (GdkWindowObject *)window;
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if (private->parent != NULL && GDK_WINDOW_DESTROYED (private->parent))
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return;
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private->impl = g_object_new (GDK_TYPE_OFFSCREEN_WINDOW, NULL);
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offscreen = GDK_OFFSCREEN_WINDOW (private->impl);
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offscreen->wrapper = window;
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offscreen->screen = screen;
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offscreen->surface = gdk_window_create_similar_surface ((GdkWindow *)private->parent,
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CAIRO_CONTENT_COLOR,
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private->width,
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private->height);
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}
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static gboolean
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gdk_offscreen_window_reparent (GdkWindow *window,
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GdkWindow *new_parent,
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gint x,
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gint y)
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{
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GdkWindowObject *private = (GdkWindowObject *)window;
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GdkWindowObject *new_parent_private = (GdkWindowObject *)new_parent;
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GdkWindowObject *old_parent;
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gboolean was_mapped;
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if (new_parent)
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{
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/* No input-output children of input-only windows */
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if (new_parent_private->input_only && !private->input_only)
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return FALSE;
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/* Don't create loops in hierarchy */
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if (is_parent_of (window, new_parent))
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return FALSE;
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}
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was_mapped = GDK_WINDOW_IS_MAPPED (window);
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gdk_window_hide (window);
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if (private->parent)
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private->parent->children = g_list_remove (private->parent->children, window);
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old_parent = private->parent;
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private->parent = new_parent_private;
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private->x = x;
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private->y = y;
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if (new_parent_private)
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private->parent->children = g_list_prepend (private->parent->children, window);
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_gdk_synthesize_crossing_events_for_geometry_change (window);
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if (old_parent)
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_gdk_synthesize_crossing_events_for_geometry_change (GDK_WINDOW (old_parent));
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return was_mapped;
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}
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static void
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from_embedder (GdkWindow *window,
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double embedder_x, double embedder_y,
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double *offscreen_x, double *offscreen_y)
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{
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GdkWindowObject *private;
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private = (GdkWindowObject *)window;
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g_signal_emit_by_name (private->impl_window,
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"from-embedder",
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embedder_x, embedder_y,
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offscreen_x, offscreen_y,
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NULL);
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}
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static void
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to_embedder (GdkWindow *window,
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double offscreen_x, double offscreen_y,
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double *embedder_x, double *embedder_y)
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{
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GdkWindowObject *private;
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private = (GdkWindowObject *)window;
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g_signal_emit_by_name (private->impl_window,
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"to-embedder",
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offscreen_x, offscreen_y,
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embedder_x, embedder_y,
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NULL);
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}
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static gint
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gdk_offscreen_window_get_root_coords (GdkWindow *window,
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gint x,
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gint y,
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gint *root_x,
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gint *root_y)
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{
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GdkWindowObject *private = GDK_WINDOW_OBJECT (window);
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GdkOffscreenWindow *offscreen;
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int tmpx, tmpy;
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tmpx = x;
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tmpy = y;
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offscreen = GDK_OFFSCREEN_WINDOW (private->impl);
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if (offscreen->embedder)
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{
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double dx, dy;
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to_embedder (window,
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x, y,
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&dx, &dy);
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tmpx = floor (dx + 0.5);
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tmpy = floor (dy + 0.5);
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gdk_window_get_root_coords (offscreen->embedder,
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tmpx, tmpy,
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&tmpx, &tmpy);
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}
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if (root_x)
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*root_x = tmpx;
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if (root_y)
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*root_y = tmpy;
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return TRUE;
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}
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static gboolean
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gdk_offscreen_window_get_device_state (GdkWindow *window,
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GdkDevice *device,
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gint *x,
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gint *y,
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GdkModifierType *mask)
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{
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GdkWindowObject *private = GDK_WINDOW_OBJECT (window);
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GdkOffscreenWindow *offscreen;
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int tmpx, tmpy;
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double dtmpx, dtmpy;
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GdkModifierType tmpmask;
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tmpx = 0;
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tmpy = 0;
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tmpmask = 0;
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offscreen = GDK_OFFSCREEN_WINDOW (private->impl);
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if (offscreen->embedder != NULL)
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{
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gdk_window_get_device_position (offscreen->embedder, device, &tmpx, &tmpy, &tmpmask);
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from_embedder (window,
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tmpx, tmpy,
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&dtmpx, &dtmpy);
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tmpx = floor (dtmpx + 0.5);
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tmpy = floor (dtmpy + 0.5);
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}
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if (x)
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*x = tmpx;
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if (y)
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*y = tmpy;
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if (mask)
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*mask = tmpmask;
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return TRUE;
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}
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/**
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* gdk_offscreen_window_get_surface:
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* @window: a #GdkWindow
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*
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* Gets the offscreen surface that an offscreen window renders into.
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* If you need to keep this around over window resizes, you need to
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* add a reference to it.
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*
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* Returns: The offscreen surface, or %NULL if not offscreen
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*/
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cairo_surface_t *
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gdk_offscreen_window_get_surface (GdkWindow *window)
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{
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GdkWindowObject *private = (GdkWindowObject *)window;
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GdkOffscreenWindow *offscreen;
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g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE);
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if (!GDK_IS_OFFSCREEN_WINDOW (private->impl))
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return NULL;
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offscreen = GDK_OFFSCREEN_WINDOW (private->impl);
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return offscreen->surface;
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}
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static void
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gdk_offscreen_window_raise (GdkWindow *window)
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{
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/* gdk_window_raise already changed the stacking order */
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_gdk_synthesize_crossing_events_for_geometry_change (window);
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}
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static void
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gdk_offscreen_window_lower (GdkWindow *window)
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{
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/* gdk_window_lower already changed the stacking order */
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_gdk_synthesize_crossing_events_for_geometry_change (window);
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}
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static void
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gdk_offscreen_window_move_resize_internal (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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gboolean send_expose_events)
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{
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GdkWindowObject *private = (GdkWindowObject *)window;
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GdkOffscreenWindow *offscreen;
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gint dx, dy, dw, dh;
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cairo_surface_t *old_surface;
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offscreen = GDK_OFFSCREEN_WINDOW (private->impl);
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if (width < 1)
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width = 1;
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if (height < 1)
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height = 1;
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if (private->destroyed)
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return;
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dx = x - private->x;
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dy = y - private->y;
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dw = width - private->width;
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dh = height - private->height;
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private->x = x;
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private->y = y;
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if (private->width != width ||
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private->height != height)
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{
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cairo_t *cr;
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private->width = width;
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private->height = height;
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old_surface = offscreen->surface;
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offscreen->surface = cairo_surface_create_similar (old_surface,
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cairo_surface_get_content (old_surface),
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width,
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height);
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cr = cairo_create (offscreen->surface);
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cairo_set_source_surface (cr, old_surface, 0, 0);
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cairo_paint (cr);
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cairo_destroy (cr);
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cairo_surface_destroy (old_surface);
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}
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if (GDK_WINDOW_IS_MAPPED (private))
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{
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// TODO: Only invalidate new area, i.e. for larger windows
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gdk_window_invalidate_rect (window, NULL, TRUE);
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_gdk_synthesize_crossing_events_for_geometry_change (window);
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}
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}
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static void
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gdk_offscreen_window_move_resize (GdkWindow *window,
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gboolean with_move,
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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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{
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GdkWindowObject *private = (GdkWindowObject *)window;
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GdkOffscreenWindow *offscreen;
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offscreen = GDK_OFFSCREEN_WINDOW (private->impl);
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if (!with_move)
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{
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x = private->x;
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y = private->y;
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}
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if (width < 0)
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width = private->width;
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if (height < 0)
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height = private->height;
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gdk_offscreen_window_move_resize_internal (window, x, y,
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width, height,
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TRUE);
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}
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static void
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gdk_offscreen_window_show (GdkWindow *window,
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gboolean already_mapped)
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{
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GdkWindowObject *private = (GdkWindowObject *)window;
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GdkRectangle area = { 0, 0, private->width, private->height };
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gdk_window_invalidate_rect (window, &area, FALSE);
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}
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static void
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gdk_offscreen_window_hide (GdkWindow *window)
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{
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GdkWindowObject *private;
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GdkOffscreenWindow *offscreen;
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GdkDisplay *display;
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g_return_if_fail (window != NULL);
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private = (GdkWindowObject*) window;
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offscreen = GDK_OFFSCREEN_WINDOW (private->impl);
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/* May need to break grabs on children */
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display = gdk_window_get_display (window);
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/* TODO: This needs updating to the new grab world */
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#if 0
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if (display->pointer_grab.window != NULL)
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{
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if (is_parent_of (window, display->pointer_grab.window))
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{
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/* Call this ourselves, even though gdk_display_pointer_ungrab
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does so too, since we want to pass implicit == TRUE so the
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broken grab event is generated */
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_gdk_display_unset_has_pointer_grab (display,
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TRUE,
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FALSE,
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GDK_CURRENT_TIME);
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gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
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}
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}
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#endif
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}
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static void
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gdk_offscreen_window_withdraw (GdkWindow *window)
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{
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}
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static GdkEventMask
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gdk_offscreen_window_get_events (GdkWindow *window)
|
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{
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return 0;
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}
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|
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static void
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gdk_offscreen_window_set_events (GdkWindow *window,
|
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GdkEventMask event_mask)
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{
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}
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|
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static void
|
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gdk_offscreen_window_set_background (GdkWindow *window,
|
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cairo_pattern_t *pattern)
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{
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}
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static void
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gdk_offscreen_window_shape_combine_region (GdkWindow *window,
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const cairo_region_t *shape_region,
|
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gint offset_x,
|
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gint offset_y)
|
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{
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}
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|
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static void
|
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gdk_offscreen_window_input_shape_combine_region (GdkWindow *window,
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const cairo_region_t *shape_region,
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gint offset_x,
|
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gint offset_y)
|
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{
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}
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|
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static gboolean
|
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gdk_offscreen_window_set_static_gravities (GdkWindow *window,
|
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gboolean use_static)
|
||
{
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return TRUE;
|
||
}
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|
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static void
|
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gdk_offscreen_window_get_geometry (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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gint *depth)
|
||
{
|
||
GdkWindowObject *private = (GdkWindowObject *)window;
|
||
|
||
g_return_if_fail (window == NULL || GDK_IS_WINDOW (window));
|
||
|
||
if (!GDK_WINDOW_DESTROYED (window))
|
||
{
|
||
if (x)
|
||
*x = private->x;
|
||
if (y)
|
||
*y = private->y;
|
||
if (width)
|
||
*width = private->width;
|
||
if (height)
|
||
*height = private->height;
|
||
if (depth)
|
||
*depth = private->depth;
|
||
}
|
||
}
|
||
|
||
static gboolean
|
||
gdk_offscreen_window_queue_antiexpose (GdkWindow *window,
|
||
cairo_region_t *area)
|
||
{
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gdk_offscreen_window_translate (GdkWindow *window,
|
||
cairo_region_t *area,
|
||
gint dx,
|
||
gint dy)
|
||
{
|
||
GdkOffscreenWindow *offscreen = GDK_OFFSCREEN_WINDOW (((GdkWindowObject *) window)->impl);
|
||
cairo_t *cr;
|
||
|
||
cr = cairo_create (offscreen->surface);
|
||
|
||
area = cairo_region_copy (area);
|
||
|
||
gdk_cairo_region (cr, area);
|
||
cairo_clip (cr);
|
||
|
||
/* NB: This is a self-copy and Cairo doesn't support that yet.
|
||
* So we do a litle trick.
|
||
*/
|
||
cairo_push_group (cr);
|
||
|
||
cairo_set_source_surface (cr, offscreen->surface, dx, dy);
|
||
cairo_paint (cr);
|
||
|
||
cairo_pop_group_to_source (cr);
|
||
cairo_paint (cr);
|
||
|
||
cairo_destroy (cr);
|
||
|
||
_gdk_window_add_damage (window, area);
|
||
}
|
||
|
||
/**
|
||
* gdk_offscreen_window_set_embedder:
|
||
* @window: a #GdkWindow
|
||
* @embedder: the #GdkWindow that @window gets embedded in
|
||
*
|
||
* Sets @window to be embedded in @embedder.
|
||
*
|
||
* To fully embed an offscreen window, in addition to calling this
|
||
* function, it is also necessary to handle the #GdkWindow::pick-embedded-child
|
||
* signal on the @embedder and the #GdkWindow::to-embedder and
|
||
* #GdkWindow::from-embedder signals on @window.
|
||
*
|
||
* Since: 2.18
|
||
*/
|
||
void
|
||
gdk_offscreen_window_set_embedder (GdkWindow *window,
|
||
GdkWindow *embedder)
|
||
{
|
||
GdkWindowObject *private = (GdkWindowObject *)window;
|
||
GdkOffscreenWindow *offscreen;
|
||
|
||
g_return_if_fail (GDK_IS_WINDOW (window));
|
||
|
||
if (!GDK_IS_OFFSCREEN_WINDOW (private->impl))
|
||
return;
|
||
|
||
offscreen = GDK_OFFSCREEN_WINDOW (private->impl);
|
||
|
||
if (embedder)
|
||
{
|
||
g_object_ref (embedder);
|
||
GDK_WINDOW_OBJECT (embedder)->num_offscreen_children++;
|
||
}
|
||
|
||
if (offscreen->embedder)
|
||
{
|
||
g_object_unref (offscreen->embedder);
|
||
GDK_WINDOW_OBJECT (offscreen->embedder)->num_offscreen_children--;
|
||
}
|
||
|
||
offscreen->embedder = embedder;
|
||
}
|
||
|
||
/**
|
||
* gdk_offscreen_window_get_embedder:
|
||
* @window: a #GdkWindow
|
||
*
|
||
* Gets the window that @window is embedded in.
|
||
*
|
||
* Returns: the embedding #GdkWindow, or %NULL if @window is not an
|
||
* embedded offscreen window
|
||
*
|
||
* Since: 2.18
|
||
*/
|
||
GdkWindow *
|
||
gdk_offscreen_window_get_embedder (GdkWindow *window)
|
||
{
|
||
GdkWindowObject *private = (GdkWindowObject *)window;
|
||
GdkOffscreenWindow *offscreen;
|
||
|
||
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
|
||
|
||
if (!GDK_IS_OFFSCREEN_WINDOW (private->impl))
|
||
return NULL;
|
||
|
||
offscreen = GDK_OFFSCREEN_WINDOW (private->impl);
|
||
|
||
return offscreen->embedder;
|
||
}
|
||
|
||
static void
|
||
gdk_offscreen_window_class_init (GdkOffscreenWindowClass *klass)
|
||
{
|
||
GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass);
|
||
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||
|
||
object_class->finalize = gdk_offscreen_window_finalize;
|
||
|
||
drawable_class->ref_cairo_surface = gdk_offscreen_window_ref_cairo_surface;
|
||
}
|
||
|
||
static void
|
||
gdk_offscreen_window_impl_iface_init (GdkWindowImplIface *iface)
|
||
{
|
||
iface->show = gdk_offscreen_window_show;
|
||
iface->hide = gdk_offscreen_window_hide;
|
||
iface->withdraw = gdk_offscreen_window_withdraw;
|
||
iface->raise = gdk_offscreen_window_raise;
|
||
iface->lower = gdk_offscreen_window_lower;
|
||
iface->move_resize = gdk_offscreen_window_move_resize;
|
||
iface->set_background = gdk_offscreen_window_set_background;
|
||
iface->get_events = gdk_offscreen_window_get_events;
|
||
iface->set_events = gdk_offscreen_window_set_events;
|
||
iface->reparent = gdk_offscreen_window_reparent;
|
||
iface->get_geometry = gdk_offscreen_window_get_geometry;
|
||
iface->shape_combine_region = gdk_offscreen_window_shape_combine_region;
|
||
iface->input_shape_combine_region = gdk_offscreen_window_input_shape_combine_region;
|
||
iface->set_static_gravities = gdk_offscreen_window_set_static_gravities;
|
||
iface->queue_antiexpose = gdk_offscreen_window_queue_antiexpose;
|
||
iface->translate = gdk_offscreen_window_translate;
|
||
iface->get_root_coords = gdk_offscreen_window_get_root_coords;
|
||
iface->get_device_state = gdk_offscreen_window_get_device_state;
|
||
iface->destroy = gdk_offscreen_window_destroy;
|
||
}
|