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Support input shapes: (#331070)

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2006-02-19  Matthias Clasen  <mclasen@redhat.com>

	Support input shapes:  (#331070)

	* gdk/gdk.symbols:
	* gdk/gdkdisplay.h:
	* gdk/gdkwindow.h:
	* gdk/x11/gdkdisplay-x11.c (gdk_display_supports_shapes)
	(gdk_display_supports_input_shapes): Functions to determine
	if a display supports shaped windows or input shapes.

	* gdk/x11/gdkwindow-x11.c (gdk_window_input_shape_combine_region):
	(gdk_window_input_shape_combine_mask):
	(gdk_window_set_child_input_shapes):
	(gdk_window_merge_child_input_shapes): Input shape versions
	of the window shape API.

	* gtk/gtk.symbols:
	* gtk/gtkwidget.h:
	* gtk/gtkwidget.c (gtk_widget_input_shape_combine_mask):
	New function to set an input shape on a widget.
This commit is contained in:
Matthias Clasen
2006-02-20 01:36:50 +00:00
committed by Matthias Clasen
parent 2447b0365e
commit 1ad93a683b
10 changed files with 423 additions and 105 deletions
Download Patch File Download Diff File Expand all files Collapse all files

314
gdk/x11/gdkwindow-x11.c
View File

@ -83,7 +83,6 @@ const int _gdk_nenvent_masks = sizeof (_gdk_event_mask_table) / sizeof (int);
/* Forward declarations */
static void gdk_window_set_static_win_gravity (GdkWindow *window,
gboolean on);
static gboolean gdk_window_have_shape_ext (GdkDisplay *display);
static gboolean gdk_window_icon_name_set (GdkWindow *window);
static void gdk_window_add_colormap_windows (GdkWindow *window);
static void set_wm_name (GdkDisplay *display,
@ -3686,19 +3685,6 @@ gdk_window_add_colormap_windows (GdkWindow *window)
XFree (old_windows);
}
static gboolean
gdk_window_have_shape_ext (GdkDisplay *display)
{
#ifdef HAVE_SHAPE_EXT
int ignore;
return XShapeQueryExtension (GDK_DISPLAY_XDISPLAY (display),
&ignore, &ignore);
#else
return 0;
#endif
}
#define WARN_SHAPE_TOO_BIG() g_warning ("GdkWindow is too large to allow the use of shape masks or shape regions.")
/*
@ -3706,6 +3692,60 @@ gdk_window_have_shape_ext (GdkDisplay *display)
* If not available, shaped windows will look
* ugly, but programs still work. Stefan Wille
*/
static void
do_shape_combine_mask (GdkWindow *window,
GdkBitmap *mask,
gint x,
gint y,
gint shape)
{
GdkWindowObject *private = (GdkWindowObject *)window;
Pixmap pixmap;
gint xoffset, yoffset;
g_return_if_fail (GDK_IS_WINDOW (window));
#ifdef HAVE_SHAPE_EXT
if (GDK_WINDOW_DESTROYED (window))
return;
_gdk_windowing_window_get_offsets (window, &xoffset, &yoffset);
if (xoffset != 0 || yoffset != 0)
{
WARN_SHAPE_TOO_BIG ();
return;
}
if (shape == ShapeBounding
? gdk_display_supports_shapes (GDK_WINDOW_DISPLAY (window))
: gdk_display_supports_input_shapes (GDK_WINDOW_DISPLAY (window)))
{
if (mask)
{
pixmap = GDK_PIXMAP_XID (mask);
private->shaped = (shape == ShapeBounding);
}
else
{
x = 0;
y = 0;
pixmap = None;
private->shaped = FALSE;
}
XShapeCombineMask (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window),
shape,
x, y,
pixmap,
ShapeSet);
}
#endif /* HAVE_SHAPE_EXT */
}
/**
* gdk_window_shape_combine_mask:
* @window: a #GdkWindow
@ -3733,10 +3773,55 @@ gdk_window_have_shape_ext (GdkDisplay *display)
void
gdk_window_shape_combine_mask (GdkWindow *window,
GdkBitmap *mask,
gint x, gint y)
gint x,
gint y)
{
do_shape_combine_mask (window, mask, x, y, ShapeBounding);
}
/**
* gdk_window_input_shape_combine_mask:
* @window: a #GdkWindow
* @mask: shape mask
* @x: X position of shape mask with respect to @window
* @y: Y position of shape mask with respect to @window
*
* Like gdk_window_shape_combine_mask(), but the shape applies
* only to event handling. Mouse events which happen while
* the pointer position corresponds to an unset bit in the
* mask will be passed on the window below @window.
*
* An input shape is typically used with RGBA windows.
* The alpha channel of the window defines which pixels are
* invisible and allows for nicely antialiased borders,
* and the input shape controls where the window is
* "clickable".
*
* On the X11 platform, this requires version 1.1 of the
* shape extension.
*
* Since: 2.10
*/
void
gdk_window_input_shape_combine_mask (GdkWindow *window,
GdkBitmap *mask,
gint x,
gint y)
{
#ifdef ShapeInput
do_shape_combine_mask (window, mask, x, y, ShapeInput);
#endif
}
static void
do_shape_combine_region (GdkWindow *window,
GdkRegion *shape_region,
gint offset_x,
gint offset_y,
gint shape)
{
GdkWindowObject *private = (GdkWindowObject *)window;
Pixmap pixmap;
gint xoffset, yoffset;
g_return_if_fail (GDK_IS_WINDOW (window));
@ -3753,29 +3838,35 @@ gdk_window_shape_combine_mask (GdkWindow *window,
return;
}
if (gdk_window_have_shape_ext (GDK_WINDOW_DISPLAY (window)))
if (shape_region == NULL)
{
if (mask)
{
pixmap = GDK_PIXMAP_XID (mask);
private->shaped = TRUE;
}
else
{
x = 0;
y = 0;
pixmap = None;
/* Use NULL mask to unset the shape */
gdk_window_shape_combine_mask (window, NULL, 0, 0);
return;
}
if (shape == ShapeBounding
? gdk_display_supports_shapes (GDK_WINDOW_DISPLAY (window))
: gdk_display_supports_input_shapes (GDK_WINDOW_DISPLAY (window)))
{
gint n_rects = 0;
XRectangle *xrects = NULL;
private->shaped = FALSE;
}
private->shaped = shape == ShapeBounding;
_gdk_region_get_xrectangles (shape_region,
0, 0,
&xrects, &n_rects);
XShapeCombineMask (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window),
ShapeBounding,
x, y,
pixmap,
ShapeSet);
XShapeCombineRectangles (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window),
shape,
offset_x, offset_y,
xrects, n_rects,
ShapeSet,
YXBanded);
g_free (xrects);
}
#endif /* HAVE_SHAPE_EXT */
}
@ -3810,52 +3901,41 @@ gdk_window_shape_combine_region (GdkWindow *window,
gint offset_x,
gint offset_y)
{
GdkWindowObject *private = (GdkWindowObject *)window;
gint xoffset, yoffset;
g_return_if_fail (GDK_IS_WINDOW (window));
#ifdef HAVE_SHAPE_EXT
if (GDK_WINDOW_DESTROYED (window))
return;
do_shape_combine_region (window, shape_region, offset_x, offset_y, ShapeBounding);
}
_gdk_windowing_window_get_offsets (window, &xoffset, &yoffset);
if (xoffset != 0 || yoffset != 0)
{
WARN_SHAPE_TOO_BIG ();
return;
}
if (shape_region == NULL)
{
/* Use NULL mask to unset the shape */
gdk_window_shape_combine_mask (window, NULL, 0, 0);
return;
}
if (gdk_window_have_shape_ext (GDK_WINDOW_DISPLAY (window)))
{
gint n_rects = 0;
XRectangle *xrects = NULL;
private->shaped = TRUE;
_gdk_region_get_xrectangles (shape_region,
0, 0,
&xrects, &n_rects);
XShapeCombineRectangles (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window),
ShapeBounding,
offset_x, offset_y,
xrects, n_rects,
ShapeSet,
YXBanded);
g_free (xrects);
}
#endif /* HAVE_SHAPE_EXT */
/**
* gdk_window_input_shape_combine_region:
* @window: a #GdkWindow
* @shape_region: region of window to be non-transparent
* @offset_x: X position of @shape_region in @window coordinates
* @offset_y: Y position of @shape_region in @window coordinates
*
* Like gdk_window_shape_combine_region(), but the shape applies
* only to event handling. Mouse events which happen while
* the pointer position corresponds to an unset bit in the
* mask will be passed on the window below @window.
*
* An input shape is typically used with RGBA windows.
* The alpha channel of the window defines which pixels are
* invisible and allows for nicely antialiased borders,
* and the input shape controls where the window is
* "clickable".
*
* On the X11 platform, this requires version 1.1 of the
* shape extension.
*
* Since: 2.10
*/
void
gdk_window_input_shape_combine_region (GdkWindow *window,
GdkRegion *shape_region,
gint offset_x,
gint offset_y)
{
#ifdef ShapeInput
do_shape_combine_region (window, shape_region, offset_x, offset_y, ShapeInput);
#endif
}
@ -5120,7 +5200,8 @@ gdk_add_rectangles (Display *disp,
static void
gdk_propagate_shapes (Display *disp,
Window win,
gboolean merge)
gboolean merge,
int shape)
{
Window rt, par, *list = NULL;
gint i, j, num = 0, num_rects = 0;
@ -5225,7 +5306,7 @@ gdk_propagate_shapes (Display *disp,
/* set the rects as the shape mask */
if (rects)
{
XShapeCombineRectangles (disp, win, ShapeBounding, 0, 0, rects, num_rects,
XShapeCombineRectangles (disp, win, shape, 0, 0, rects, num_rects,
ShapeSet, YXSorted);
g_free (rects);
}
@ -5261,11 +5342,12 @@ gdk_window_set_child_shapes (GdkWindow *window)
{
g_return_if_fail (GDK_IS_WINDOW (window));
#ifdef HAVE_SHAPE_EXT
if (!GDK_WINDOW_DESTROYED (window) &&
gdk_window_have_shape_ext (GDK_WINDOW_DISPLAY (window)))
gdk_display_supports_shapes (GDK_WINDOW_DISPLAY (window)))
gdk_propagate_shapes (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window), FALSE);
GDK_WINDOW_XID (window), FALSE, ShapeBounding);
#endif
}
@ -5281,7 +5363,6 @@ gdk_window_set_child_shapes (GdkWindow *window)
* This function is distinct from gdk_window_set_child_shapes()
* because it includes @window's shape mask in the set of shapes to
* be merged.
*
**/
void
gdk_window_merge_child_shapes (GdkWindow *window)
@ -5290,12 +5371,69 @@ gdk_window_merge_child_shapes (GdkWindow *window)
#ifdef HAVE_SHAPE_EXT
if (!GDK_WINDOW_DESTROYED (window) &&
gdk_window_have_shape_ext (GDK_WINDOW_DISPLAY (window)))
gdk_display_supports_shapes (GDK_WINDOW_DISPLAY (window)))
gdk_propagate_shapes (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window), TRUE);
GDK_WINDOW_XID (window), TRUE, ShapeBounding);
#endif
}
/**
* gdk_window_set_child_input_shapes:
* @window: a #GdkWindow
*
* Sets the input shape mask of @window to the union of input shape masks
* for all children of @window, ignoring the input shape mask of @window
* itself. Contrast with gdk_window_merge_child_input_shapes() which includes
* the input shape mask of @window in the masks to be merged.
*
* Since: 2.10
**/
void
gdk_window_set_child_input_shapes (GdkWindow *window)
{
g_return_if_fail (GDK_IS_WINDOW (window));
#ifdef HAVE_SHAPE_EXT
#ifdef ShapeInput
if (!GDK_WINDOW_DESTROYED (window) &&
gdk_display_supports_input_shapes (GDK_WINDOW_DISPLAY (window)))
gdk_propagate_shapes (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window), FALSE, ShapeInput);
#endif
#endif
}
/**
* gdk_window_merge_child_input_shapes:
* @window: a #GdkWindow
*
* Merges the input shape masks for any child windows into the
* input shape mask for @window. i.e. the union of all input masks
* for @window and its children will become the new input mask
* for @window. See gdk_window_input_shape_combine_mask().
*
* This function is distinct from gdk_window_set_child_input_shapes()
* because it includes @window's input shape mask in the set of
* shapes to be merged.
*
* Since: 2.10
**/
void
gdk_window_merge_child_input_shapes (GdkWindow *window)
{
g_return_if_fail (GDK_IS_WINDOW (window));
#ifdef HAVE_SHAPE_EXT
#ifdef ShapeInput
if (!GDK_WINDOW_DESTROYED (window) &&
gdk_display_supports_input_shapes (GDK_WINDOW_DISPLAY (window)))
gdk_propagate_shapes (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window), TRUE, ShapeInput);
#endif
#endif
}
static void
gdk_window_set_static_bit_gravity (GdkWindow *window, gboolean on)
{