mirror of
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236 lines
6.6 KiB
C
236 lines
6.6 KiB
C
/* 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 "gdkdrawable-x11.h"
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#include "gdkx.h"
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#include "gdkprivate-x11.h"
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#include "gdkscreen-x11.h"
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#include "gdkdisplay-x11.h"
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#include <cairo-xlib.h>
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#include <stdlib.h>
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#include <string.h>
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static cairo_surface_t *gdk_x11_ref_cairo_surface (GdkDrawable *drawable);
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static cairo_surface_t *gdk_x11_create_cairo_surface (GdkDrawable *drawable,
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int width,
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int height);
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static const cairo_user_data_key_t gdk_x11_cairo_key;
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G_DEFINE_TYPE (GdkDrawableImplX11, _gdk_drawable_impl_x11, GDK_TYPE_DRAWABLE)
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static void
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_gdk_drawable_impl_x11_class_init (GdkDrawableImplX11Class *klass)
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{
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GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass);
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drawable_class->ref_cairo_surface = gdk_x11_ref_cairo_surface;
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drawable_class->create_cairo_surface = gdk_x11_create_cairo_surface;
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}
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static void
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_gdk_drawable_impl_x11_init (GdkDrawableImplX11 *impl)
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{
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}
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/**
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* _gdk_x11_drawable_finish:
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* @drawable: a #GdkDrawableImplX11.
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*
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* Performs necessary cleanup prior to destroying a window.
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**/
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void
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_gdk_x11_drawable_finish (GdkDrawable *drawable)
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{
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GdkDrawableImplX11 *impl = GDK_DRAWABLE_IMPL_X11 (drawable);
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if (impl->cairo_surface)
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{
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cairo_surface_finish (impl->cairo_surface);
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cairo_surface_set_user_data (impl->cairo_surface, &gdk_x11_cairo_key,
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NULL, NULL);
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}
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}
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/**
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* _gdk_x11_drawable_update_size:
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* @drawable: a #GdkDrawableImplX11.
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*
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* Updates the state of the drawable (in particular the drawable's
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* cairo surface) when its size has changed.
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**/
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void
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_gdk_x11_drawable_update_size (GdkDrawable *drawable)
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{
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GdkDrawableImplX11 *impl = GDK_DRAWABLE_IMPL_X11 (drawable);
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if (impl->cairo_surface)
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{
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cairo_xlib_surface_set_size (impl->cairo_surface,
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gdk_window_get_width (impl->wrapper),
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gdk_window_get_height (impl->wrapper));
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}
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}
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/*****************************************************
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* X11 specific implementations of generic functions *
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*****************************************************/
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static GdkDrawable *
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get_impl_drawable (GdkDrawable *drawable)
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{
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if (GDK_IS_WINDOW (drawable))
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return ((GdkWindowObject *)drawable)->impl;
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else
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{
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g_warning (G_STRLOC " drawable is not a window");
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return NULL;
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}
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}
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/**
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* gdk_x11_drawable_get_xdisplay:
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* @drawable: a #GdkDrawable.
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*
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* Returns the display of a #GdkDrawable.
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*
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* Return value: an Xlib <type>Display*</type>.
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**/
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Display *
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gdk_x11_drawable_get_xdisplay (GdkDrawable *drawable)
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{
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if (GDK_IS_DRAWABLE_IMPL_X11 (drawable))
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return GDK_SCREEN_XDISPLAY (GDK_DRAWABLE_IMPL_X11 (drawable)->screen);
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else
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return GDK_SCREEN_XDISPLAY (GDK_DRAWABLE_IMPL_X11 (get_impl_drawable (drawable))->screen);
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}
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/**
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* gdk_x11_drawable_get_xid:
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* @drawable: a #GdkDrawable.
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*
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* Returns the X resource (window) belonging to a #GdkDrawable.
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*
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* Return value: the ID of @drawable's X resource.
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**/
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XID
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gdk_x11_drawable_get_xid (GdkDrawable *drawable)
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{
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GdkDrawable *impl;
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if (GDK_IS_WINDOW (drawable))
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{
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GdkWindow *window = (GdkWindow *)drawable;
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/* Try to ensure the window has a native window */
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if (!_gdk_window_has_impl (window))
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{
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gdk_window_ensure_native (window);
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/* We sync here to ensure the window is created in the Xserver when
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* this function returns. This is required because the returned XID
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* for this window must be valid immediately, even with another
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* connection to the Xserver */
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gdk_display_sync (gdk_window_get_display (window));
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}
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if (!GDK_WINDOW_IS_X11 (window))
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{
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g_warning (G_STRLOC " drawable is not a native X11 window");
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return None;
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}
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impl = ((GdkWindowObject *)drawable)->impl;
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}
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else
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{
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g_warning (G_STRLOC " drawable is not a window");
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return None;
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}
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return ((GdkDrawableImplX11 *)impl)->xid;
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}
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GdkDrawable *
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gdk_x11_window_get_drawable_impl (GdkWindow *window)
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{
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return ((GdkWindowObject *)window)->impl;
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}
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static void
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gdk_x11_cairo_surface_destroy (void *data)
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{
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GdkDrawableImplX11 *impl = data;
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impl->cairo_surface = NULL;
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}
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static cairo_surface_t *
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gdk_x11_create_cairo_surface (GdkDrawable *drawable,
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int width,
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int height)
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{
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GdkDrawableImplX11 *impl = GDK_DRAWABLE_IMPL_X11 (drawable);
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GdkVisual *visual;
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visual = gdk_window_get_visual (impl->wrapper);
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return cairo_xlib_surface_create (GDK_SCREEN_XDISPLAY (impl->screen),
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impl->xid,
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GDK_VISUAL_XVISUAL (visual),
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width, height);
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}
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static cairo_surface_t *
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gdk_x11_ref_cairo_surface (GdkDrawable *drawable)
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{
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GdkDrawableImplX11 *impl = GDK_DRAWABLE_IMPL_X11 (drawable);
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if (GDK_IS_WINDOW_IMPL_X11 (drawable) &&
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GDK_WINDOW_DESTROYED (impl->wrapper))
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return NULL;
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if (!impl->cairo_surface)
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{
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impl->cairo_surface = gdk_x11_create_cairo_surface (drawable,
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gdk_window_get_width (impl->wrapper),
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gdk_window_get_height (impl->wrapper));
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if (impl->cairo_surface)
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cairo_surface_set_user_data (impl->cairo_surface, &gdk_x11_cairo_key,
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drawable, gdk_x11_cairo_surface_destroy);
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}
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else
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cairo_surface_reference (impl->cairo_surface);
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return impl->cairo_surface;
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}
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