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gdk: Rewrite background handling

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Now the window background is a cairo_pattern_t. The backends will try to
set this as good as they can on the windowing system, but no guarantees
are made on wether the windowing system supports the pattern.

Also gets rid of GDK_NO_BG as undefined behavior is not a good idea to
support, and GDK_NO_BG effectively made the window's contents undefined.
It wasn't effectively used in GTK anyway.
This commit is contained in:
Benjamin Otte
2010-08-15 13:49:30 +02:00
parent c250b3fe1d
commit 2c1633699f
11 changed files with 144 additions and 288 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
docs/reference/gdk/gdk3-sections.txt
View File

@ -474,7 +474,7 @@ gdk_window_merge_child_input_shapes
gdk_window_set_static_gravities
gdk_window_set_title
gdk_window_set_background
gdk_window_set_back_pixmap
gdk_window_set_background_pattern
gdk_window_get_background_pattern
GDK_PARENT_RELATIVE
gdk_window_set_cursor

1
gdk/gdk.symbols
View File

@ -593,6 +593,7 @@ gdk_window_get_support_multidevice
gdk_window_has_native
gdk_window_set_background
gdk_window_set_back_pixmap
gdk_window_set_background_pattern
gdk_window_set_cursor
gdk_window_shape_combine_region
gdk_window_set_child_shapes

2
gdk/gdkinternals.h
View File

@ -203,8 +203,6 @@ struct _GdkWindowObject
GList *filters;
GList *children;
GdkColor bg_color;
GdkPixmap *bg_pixmap;
cairo_pattern_t *background;
GSList *paint_stack;

48
gdk/gdkoffscreenwindow.c
View File

@ -35,7 +35,6 @@
#include "gdktypes.h"
#include "gdkscreen.h"
#include "gdkcolor.h"
#include "gdkcursor.h"
/* LIMITATIONS:
@ -53,7 +52,6 @@ struct _GdkOffscreenWindow
GdkDrawable parent_instance;
GdkWindow *wrapper;
GdkCursor *cursor;
GdkColormap *colormap;
GdkScreen *screen;
@ -88,11 +86,6 @@ gdk_offscreen_window_finalize (GObject *object)
{
GdkOffscreenWindow *offscreen = GDK_OFFSCREEN_WINDOW (object);
if (offscreen->cursor)
gdk_cursor_unref (offscreen->cursor);
offscreen->cursor = NULL;
g_object_unref (offscreen->pixmap);
G_OBJECT_CLASS (gdk_offscreen_window_parent_class)->finalize (object);
@ -601,46 +594,8 @@ gdk_offscreen_window_set_events (GdkWindow *window,
static void
gdk_offscreen_window_set_background (GdkWindow *window,
const GdkColor *color)
cairo_pattern_t *pattern)
{
GdkWindowObject *private = (GdkWindowObject *)window;
private->bg_color = *color;
if (private->bg_pixmap &&
private->bg_pixmap != GDK_PARENT_RELATIVE_BG &&
private->bg_pixmap != GDK_NO_BG)
g_object_unref (private->bg_pixmap);
private->bg_pixmap = NULL;
}
static void
gdk_offscreen_window_set_back_pixmap (GdkWindow *window,
GdkPixmap *pixmap)
{
GdkWindowObject *private = (GdkWindowObject *)window;
if (pixmap &&
private->bg_pixmap != GDK_PARENT_RELATIVE_BG &&
private->bg_pixmap != GDK_NO_BG &&
!gdk_drawable_get_colormap (pixmap))
{
g_warning ("gdk_window_set_back_pixmap(): pixmap must have a colormap");
return;
}
if (private->bg_pixmap &&
private->bg_pixmap != GDK_PARENT_RELATIVE_BG &&
private->bg_pixmap != GDK_NO_BG)
g_object_unref (private->bg_pixmap);
private->bg_pixmap = pixmap;
if (pixmap &&
private->bg_pixmap != GDK_PARENT_RELATIVE_BG &&
private->bg_pixmap != GDK_NO_BG)
g_object_ref (pixmap);
}
static void
@ -832,7 +787,6 @@ gdk_offscreen_window_impl_iface_init (GdkWindowImplIface *iface)
iface->lower = gdk_offscreen_window_lower;
iface->move_resize = gdk_offscreen_window_move_resize;
iface->set_background = gdk_offscreen_window_set_background;
iface->set_back_pixmap = gdk_offscreen_window_set_back_pixmap;
iface->get_events = gdk_offscreen_window_get_events;
iface->set_events = gdk_offscreen_window_set_events;
iface->reparent = gdk_offscreen_window_reparent;

166
gdk/gdkwindow.c
View File

@ -1406,10 +1406,8 @@ gdk_window_new (GdkWindow *parent,
private->input_only = FALSE;
private->depth = visual->depth;
private->bg_color.pixel = 0; /* TODO: BlackPixel (xdisplay, screen_x11->screen_num); */
private->bg_color.red = private->bg_color.green = private->bg_color.blue = 0;
private->bg_pixmap = NULL;
/* XXX: Cache this somehow? */
private->background = cairo_pattern_create_rgb (0, 0, 0);
}
else
{
@ -1899,9 +1897,7 @@ gdk_window_ensure_native (GdkWindow *window)
if (!private->input_only)
{
impl_iface->set_background (window, &private->bg_color);
if (private->bg_pixmap != NULL)
impl_iface->set_back_pixmap (window, private->bg_pixmap);
impl_iface->set_background (window, private->background);
}
impl_iface->input_shape_combine_region (window,
@ -2056,13 +2052,7 @@ _gdk_window_destroy_hierarchy (GdkWindow *window,
gdk_window_free_paint_stack (window);
if (private->bg_pixmap &&
private->bg_pixmap != GDK_PARENT_RELATIVE_BG &&
private->bg_pixmap != GDK_NO_BG)
{
g_object_unref (private->bg_pixmap);
private->bg_pixmap = NULL;
}
gdk_window_set_background_pattern (window, NULL);
if (private->background)
{
@ -3684,7 +3674,7 @@ setup_backing_rect (GdkWindow *window, GdkWindowPaint *paint, int x_offset_cairo
cairo_translate (cr, x_offset, y_offset);
}
else
gdk_cairo_set_source_color (cr, &private->bg_color);
cairo_set_source_rgb (cr, 0, 0, 0);
return cr;
}
@ -4285,8 +4275,7 @@ _gdk_window_process_updates_recurse (GdkWindow *window,
g_object_unref (window);
}
else if (private->bg_pixmap != GDK_NO_BG &&
private->window_type != GDK_WINDOW_FOREIGN)
else if (private->window_type != GDK_WINDOW_FOREIGN)
{
/* No exposure mask set, so nothing will be drawn, the
* app relies on the background being what it specified
@ -6952,120 +6941,96 @@ gdk_window_move_region (GdkWindow *window,
/**
* gdk_window_set_background:
* @window: a #GdkWindow
* @color: an allocated #GdkColor
* @color: a #GdkColor
*
* Sets the background color of @window. (However, when using GTK+,
* set the background of a widget with gtk_widget_modify_bg() - if
* you're an application - or gtk_style_set_background() - if you're
* implementing a custom widget.)
*
* See also gdk_window_set_background_pixmap().
* See also gdk_window_set_background_pattern().
*/
void
gdk_window_set_background (GdkWindow *window,
const GdkColor *color)
{
GdkWindowObject *private;
GdkWindowImplIface *impl_iface;
cairo_pattern_t *pattern;
g_return_if_fail (GDK_IS_WINDOW (window));
private = (GdkWindowObject *) window;
pattern = cairo_pattern_create_rgb (color->red / 65535.,
color->green / 65535.,
color->blue / 65535.);
private->bg_color = *color;
gdk_window_set_background_pattern (window, pattern);
if (private->bg_pixmap &&
private->bg_pixmap != GDK_PARENT_RELATIVE_BG &&
private->bg_pixmap != GDK_NO_BG)
g_object_unref (private->bg_pixmap);
cairo_pattern_destroy (pattern);
}
private->bg_pixmap = NULL;
/* NB: This is more or less a hack now and about to go away. */
void
gdk_window_set_back_pixmap (GdkWindow *window,
GdkPixmap *pixmap,
gboolean parent_relative)
{
cairo_pattern_t *pattern;
if (private->background)
g_return_if_fail (GDK_IS_WINDOW (window));
g_return_if_fail (pixmap == NULL || !parent_relative);
if (parent_relative || pixmap == NULL)
pattern = NULL;
else
{
cairo_pattern_destroy (private->background);
private->background = NULL;
static cairo_user_data_key_t key;
cairo_surface_t *surface = _gdk_drawable_ref_cairo_surface (pixmap);
pattern = cairo_pattern_create_for_surface (surface);
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
g_object_ref (pixmap);
cairo_pattern_set_user_data (pattern, &key, pixmap, g_object_unref);
}
if (!GDK_WINDOW_DESTROYED (window) &&
gdk_window_has_impl (private) &&
!private->input_only)
{
impl_iface = GDK_WINDOW_IMPL_GET_IFACE (private->impl);
impl_iface->set_background (window, &private->bg_color);
}
gdk_window_set_background_pattern (window, pattern);
if (pattern)
cairo_pattern_destroy (pattern);
}
/**
* gdk_window_set_back_pixmap:
* gdk_window_set_background_pattern:
* @window: a #GdkWindow
* @pixmap: (allow-none): a #GdkPixmap, or %NULL
* @parent_relative: whether the tiling origin is at the origin of
* @window's parent
* @pattern: (allow-none): a pattern to use, or %NULL
*
* Sets the background pixmap of @window. May also be used to set a
* background of "None" on @window, by setting a background pixmap
* of %NULL.
* Sets the background of @window.
*
* A background pixmap will be tiled, positioning the first tile at
* the origin of @window, or if @parent_relative is %TRUE, the tiling
* will be done based on the origin of the parent window (useful to
* align tiles in a parent with tiles in a child).
*
* A background pixmap of %NULL means that the window will have no
* background. A window with no background will never have its
* background filled by the windowing system, instead the window will
* contain whatever pixels were already in the corresponding area of
* the display.
* A background of %NULL means that the window will inherit its
* background form its parent window.
*
* The windowing system will normally fill a window with its background
* when the window is obscured then exposed, and when you call
* gdk_window_clear().
*/
void
gdk_window_set_back_pixmap (GdkWindow *window,
GdkPixmap *pixmap,
gboolean parent_relative)
gdk_window_set_background_pattern (GdkWindow *window,
cairo_pattern_t *pattern)
{
GdkWindowObject *private;
GdkWindowImplIface *impl_iface;
g_return_if_fail (GDK_IS_WINDOW (window));
g_return_if_fail (pixmap == NULL || !parent_relative);
g_return_if_fail (pixmap == NULL || gdk_drawable_get_depth (window) == gdk_drawable_get_depth (pixmap));
private = (GdkWindowObject *) window;
if (pixmap && !gdk_drawable_get_colormap (pixmap))
{
g_warning ("gdk_window_set_back_pixmap(): pixmap must have a colormap");
return;
}
if (private->bg_pixmap &&
private->bg_pixmap != GDK_PARENT_RELATIVE_BG &&
private->bg_pixmap != GDK_NO_BG)
g_object_unref (private->bg_pixmap);
if (pattern)
cairo_pattern_reference (pattern);
if (private->background)
{
cairo_pattern_destroy (private->background);
private->background = NULL;
}
cairo_pattern_destroy (private->background);
private->background = pattern;
if (parent_relative)
private->bg_pixmap = GDK_PARENT_RELATIVE_BG;
else if (pixmap)
private->bg_pixmap = g_object_ref (pixmap);
else
private->bg_pixmap = GDK_NO_BG;
if (!GDK_WINDOW_DESTROYED (window) &&
gdk_window_has_impl (private) &&
if (gdk_window_has_impl (private) &&
!private->input_only)
{
impl_iface = GDK_WINDOW_IMPL_GET_IFACE (private->impl);
impl_iface->set_back_pixmap (window, private->bg_pixmap);
GdkWindowImplIface *impl_iface = GDK_WINDOW_IMPL_GET_IFACE (private->impl);
impl_iface->set_background (window, pattern);
}
}
@ -7089,33 +7054,6 @@ gdk_window_get_background_pattern (GdkWindow *window)
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
if (private->background == NULL)
{
if (private->bg_pixmap == GDK_PARENT_RELATIVE_BG)
private->background = NULL;
else if (private->bg_pixmap != GDK_NO_BG &&
private->bg_pixmap != NULL)
{
static cairo_user_data_key_t key;
cairo_surface_t *surface;
surface = _gdk_drawable_ref_cairo_surface (private->bg_pixmap);
private->background = cairo_pattern_create_for_surface (surface);
cairo_surface_destroy (surface);
cairo_pattern_set_extend (private->background, CAIRO_EXTEND_REPEAT);
cairo_pattern_set_user_data (private->background,
&key,
g_object_ref (private->bg_pixmap),
g_object_unref);
}
else
private->background =
cairo_pattern_create_rgb (private->bg_color.red / 65535.,
private->bg_color.green / 65535.,
private->bg_color.blue / 65535.);
}
return private->background;
}

2
gdk/gdkwindow.h
View File

@ -678,6 +678,8 @@ void gdk_window_set_background (GdkWindow *window,
void gdk_window_set_back_pixmap (GdkWindow *window,
GdkPixmap *pixmap,
gboolean parent_relative);
void gdk_window_set_background_pattern (GdkWindow *window,
cairo_pattern_t *pattern);
cairo_pattern_t *gdk_window_get_background_pattern (GdkWindow *window);
void gdk_window_set_cursor (GdkWindow *window,

4
gdk/gdkwindowimpl.h
View File

@ -62,9 +62,7 @@ struct _GdkWindowImplIface
gint width,
gint height);
void (* set_background) (GdkWindow *window,
const GdkColor *color);
void (* set_back_pixmap) (GdkWindow *window,
GdkPixmap *pixmap);
cairo_pattern_t *pattern);
GdkEventMask (* get_events) (GdkWindow *window);
void (* set_events) (GdkWindow *window,

60
gdk/quartz/gdkwindow-quartz.c
View File

@ -228,13 +228,10 @@ gdk_window_impl_quartz_begin_paint_region (GdkPaintable *paintable,
const cairo_region_t *region)
{
GdkWindowImplQuartz *impl = GDK_WINDOW_IMPL_QUARTZ (paintable);
GdkWindowObject *private = (GdkWindowObject*)window;
GdkPixmap *bg_pixmap;
GdkWindowObject *private = (GdkWindowObject*) window;
cairo_region_t *clipped_and_offset_region;
cairo_t *cr;
bg_pixmap = private->bg_pixmap;
clipped_and_offset_region = cairo_region_copy (region);
cairo_region_intersect (clipped_and_offset_region,
@ -249,8 +246,7 @@ gdk_window_impl_quartz_begin_paint_region (GdkPaintable *paintable,
impl->begin_paint_count++;
if (bg_pixmap == GDK_NO_BG ||
cairo_region_is_empty (clipped_and_offset_region))
if (cairo_region_is_empty (clipped_and_offset_region))
goto done;
cr = gdk_cairo_create (window);
@ -260,40 +256,16 @@ gdk_window_impl_quartz_begin_paint_region (GdkPaintable *paintable,
gdk_cairo_region (cr, clipped_and_offset_region);
cairo_clip (cr);
if (bg_pixmap == NULL)
while (private->background == NULL && private->parent)
{
gdk_cairo_set_source_color (cr, &private->bg_color);
cairo_translate (cr, -private->x, private->y);
private = private->parent;
}
if (private->background)
cairo_set_source (cr, private->background);
else
{
int x_offset, y_offset;
x_offset = y_offset = 0;
while (window && bg_pixmap == GDK_PARENT_RELATIVE_BG)
{
/* If this window should have the same background as the parent,
* fetch the parent. (And if the same goes for the parent, fetch
* the grandparent, etc.)
*/
x_offset += ((GdkWindowObject *) window)->x;
y_offset += ((GdkWindowObject *) window)->y;
window = GDK_WINDOW (((GdkWindowObject *) window)->parent);
bg_pixmap = ((GdkWindowObject *) window)->bg_pixmap;
}
/* If we have a parent relative background or we don't have a pixmap,
* clear the area to transparent.
*/
if (bg_pixmap == NULL || bg_pixmap == GDK_NO_BG || bg_pixmap == GDK_PARENT_RELATIVE_BG)
{
cairo_destroy (cr);
goto done;
}
gdk_cairo_set_source_pixmap (cr, bg_pixmap, x_offset, y_offset);
cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REPEAT);
}
cairo_set_source_rgba (cr, 0, 0, 0, 0);
/* Can use cairo_paint() here, we clipped above */
cairo_paint (cr);
@ -1648,23 +1620,14 @@ gdk_window_quartz_restack_toplevel (GdkWindow *window,
}
static void
gdk_window_quartz_set_background (GdkWindow *window,
const GdkColor *color)
gdk_window_quartz_set_background (GdkWindow *window,
cairo_pattern_t *pattern)
{
/* FIXME: We could theoretically set the background color for toplevels
* here. (Currently we draw the background before emitting expose events)
*/
}
static void
gdk_window_quartz_set_back_pixmap (GdkWindow *window,
GdkPixmap *pixmap)
{
/* FIXME: Could theoretically set some background image here. (Currently
* the back pixmap is drawn before emitting expose events.
*/
}
static void
gdk_window_quartz_set_device_cursor (GdkWindow *window,
GdkDevice *device,
@ -3027,7 +2990,6 @@ gdk_window_impl_iface_init (GdkWindowImplIface *iface)
iface->restack_toplevel = gdk_window_quartz_restack_toplevel;
iface->move_resize = gdk_window_quartz_move_resize;
iface->set_background = gdk_window_quartz_set_background;
iface->set_back_pixmap = gdk_window_quartz_set_back_pixmap;
iface->reparent = gdk_window_quartz_reparent;
iface->set_device_cursor = gdk_window_quartz_set_device_cursor;
iface->get_geometry = gdk_window_quartz_get_geometry;

12
gdk/win32/gdkgeometry-win32.c
View File

@ -152,18 +152,6 @@ tmp_unset_bg (GdkWindow *window)
impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
impl->no_bg = TRUE;
/*
* The X version sets background = None to avoid updateing for a moment.
* Not sure if this could really emulate it.
*/
if (obj->bg_pixmap != GDK_NO_BG)
{
///* handled in WM_ERASEBKGRND proceesing */;
//HDC hdc = GetDC (GDK_WINDOW_HWND (window));
//erase_background (window, hdc);
}
}
static void

19
gdk/win32/gdkwindow-win32.c
View File

@ -1790,23 +1790,9 @@ _gdk_modal_current (void)
}
static void
gdk_win32_window_set_background (GdkWindow *window,
const GdkColor *color)
gdk_win32_window_set_background (GdkWindow *window,
cairo_pattern_t *pattern)
{
GdkWindowObject *private = (GdkWindowObject *)window;
GDK_NOTE (MISC, g_print ("gdk_win32_window_set_background: %p: %s\n",
GDK_WINDOW_HWND (window),
_gdk_win32_color_to_string (color)));
private->bg_color = *color;
}
static void
gdk_win32_window_set_back_pixmap (GdkWindow *window,
GdkPixmap *pixmap)
{
/* TODO_CSW? but win32 has no XSetWindowBackgroundPixmap */
}
static void
@ -3365,7 +3351,6 @@ gdk_window_impl_iface_init (GdkWindowImplIface *iface)
iface->restack_toplevel = gdk_win32_window_restack_toplevel;
iface->move_resize = gdk_win32_window_move_resize;
iface->set_background = gdk_win32_window_set_background;
iface->set_back_pixmap = gdk_win32_window_set_back_pixmap;
iface->reparent = gdk_win32_window_reparent;
iface->set_device_cursor = gdk_win32_window_set_device_cursor;
iface->get_geometry = gdk_win32_window_get_geometry;

112
gdk/x11/gdkwindow-x11.c
View File

@ -35,6 +35,8 @@
#include <X11/XKBlib.h>
#endif
#include <cairo-xlib.h>
#include <netinet/in.h>
#include <unistd.h>
@ -106,6 +108,8 @@ static void set_wm_name (GdkDisplay *display,
Window xwindow,
const gchar *name);
static void move_to_current_desktop (GdkWindow *window);
static void gdk_window_x11_set_background (GdkWindow *window,
cairo_pattern_t *pattern);
static GdkColormap* gdk_window_impl_x11_get_colormap (GdkDrawable *drawable);
static void gdk_window_impl_x11_set_colormap (GdkDrawable *drawable,
@ -228,9 +232,8 @@ tmp_unset_bg (GdkWindow *window)
impl->no_bg = TRUE;
if (obj->bg_pixmap != GDK_NO_BG)
XSetWindowBackgroundPixmap (GDK_DRAWABLE_XDISPLAY (window),
GDK_DRAWABLE_XID (window), None);
XSetWindowBackgroundPixmap (GDK_DRAWABLE_XDISPLAY (window),
GDK_DRAWABLE_XID (window), None);
}
static void
@ -244,27 +247,7 @@ tmp_reset_bg (GdkWindow *window)
impl->no_bg = FALSE;
if (obj->bg_pixmap == GDK_NO_BG)
return;
if (obj->bg_pixmap)
{
Pixmap xpixmap;
if (obj->bg_pixmap == GDK_PARENT_RELATIVE_BG)
xpixmap = ParentRelative;
else
xpixmap = GDK_DRAWABLE_XID (obj->bg_pixmap);
XSetWindowBackgroundPixmap (GDK_DRAWABLE_XDISPLAY (window),
GDK_DRAWABLE_XID (window), xpixmap);
}
else
{
XSetWindowBackground (GDK_DRAWABLE_XDISPLAY (window),
GDK_DRAWABLE_XID (window),
obj->bg_color.pixel);
}
gdk_window_x11_set_background (window, obj->background);
}
/* Unsetting and resetting window backgrounds.
@ -749,7 +732,7 @@ _gdk_window_impl_new (GdkWindow *window,
}
}
xattributes.background_pixel = private->bg_color.pixel;
xattributes.background_pixel = BlackPixel (xdisplay, screen_x11->screen_num);
xattributes.border_pixel = BlackPixel (xdisplay, screen_x11->screen_num);
xattributes_mask |= CWBorderPixel | CWBackPixel;
@ -2594,8 +2577,8 @@ gdk_window_set_transient_for (GdkWindow *window,
}
static void
gdk_window_x11_set_background (GdkWindow *window,
const GdkColor *color)
gdk_window_x11_set_back_color (GdkWindow *window,
GdkColor *color)
{
GdkColor allocated = *color;
@ -2610,22 +2593,70 @@ gdk_window_x11_set_background (GdkWindow *window,
gdk_colormap_free_colors (gdk_drawable_get_colormap (window), &allocated, 1);
}
static void
gdk_window_x11_set_back_pixmap (GdkWindow *window,
GdkPixmap *pixmap)
static gboolean
matrix_is_identity (cairo_matrix_t *matrix)
{
Pixmap xpixmap;
return matrix->xx == 1.0 && matrix->yy == 1.0 &&
matrix->yx == 0.0 && matrix->xy == 0.0 &&
matrix->x0 == 0.0 && matrix->y0 == 0.0;
}
if (pixmap == GDK_PARENT_RELATIVE_BG)
xpixmap = ParentRelative;
else if (pixmap == GDK_NO_BG)
xpixmap = None;
else
xpixmap = GDK_PIXMAP_XID (pixmap);
static void
gdk_window_x11_set_background (GdkWindow *window,
cairo_pattern_t *pattern)
{
GdkColor color = { 0, };
double r, g, b, a;
cairo_surface_t *surface;
cairo_matrix_t matrix;
if (!GDK_WINDOW_DESTROYED (window))
XSetWindowBackgroundPixmap (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window), xpixmap);
if (GDK_WINDOW_DESTROYED (window))
return;
if (pattern == NULL)
{
XSetWindowBackgroundPixmap (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window), ParentRelative);
return;
}
switch (cairo_pattern_get_type (pattern))
{
case CAIRO_PATTERN_TYPE_SOLID:
cairo_pattern_get_rgba (pattern, &r, &g, &b, &a);
color.red = r * 65535;
color.green = g * 65535;
color.blue = b * 65535;
break;
case CAIRO_PATTERN_TYPE_SURFACE:
cairo_pattern_get_matrix (pattern, &matrix);
if (cairo_pattern_get_surface (pattern, &surface) == CAIRO_STATUS_SUCCESS &&
matrix_is_identity (&matrix) &&
cairo_surface_get_type (surface) == CAIRO_SURFACE_TYPE_XLIB &&
cairo_xlib_surface_get_display (surface) == GDK_WINDOW_XDISPLAY (window))
{
double x, y;
cairo_surface_get_device_offset (surface, &x, &y);
/* XXX: This still bombs for non-pixmaps, but there's no way to
* detect we're not a pixmap in Cairo... */
if (x == 0.0 && y == 0.0)
{
XSetWindowBackgroundPixmap (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window),
cairo_xlib_surface_get_drawable (surface));
return;
}
}
/* fall through */
case CAIRO_PATTERN_TYPE_LINEAR:
case CAIRO_PATTERN_TYPE_RADIAL:
default:
/* fallback: just use black */
break;
}
gdk_window_x11_set_back_color (window, &color);
}
static void
@ -5452,7 +5483,6 @@ gdk_window_impl_iface_init (GdkWindowImplIface *iface)
iface->restack_toplevel = gdk_window_x11_restack_toplevel;
iface->move_resize = gdk_window_x11_move_resize;
iface->set_background = gdk_window_x11_set_background;
iface->set_back_pixmap = gdk_window_x11_set_back_pixmap;
iface->reparent = gdk_window_x11_reparent;
iface->set_device_cursor = gdk_window_x11_set_device_cursor;
iface->get_geometry = gdk_window_x11_get_geometry;