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Fix problems with DND on some X servers

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When the X server does not support the shape extension (as some
vnc implementations seem to), our DND code was always seeing
an empty input shape, so drops always missed their target.

http://bugzilla.gnome.org/show_bug.cgi?id=620240
This commit is contained in:
Matthias Clasen 2012-01-03 10:51:13 -05:00
parent c62a1fd522
commit 266866e82c
2 changed files with 24 additions and 12 deletions
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13
gdk/x11/gdkdnd-x11.c
View File

@ -662,11 +662,16 @@ is_pointer_within_shape (GdkDisplay *display,
GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
cairo_region_t *input_shape;
child->shape = _gdk_x11_xwindow_get_shape (display_x11->xdisplay,
child->xid, ShapeBounding);
child->shape = NULL;
if (gdk_display_supports_shapes (display))
child->shape = _gdk_x11_xwindow_get_shape (display_x11->xdisplay,
child->xid, ShapeBounding);
#ifdef ShapeInput
input_shape = _gdk_x11_xwindow_get_shape (display_x11->xdisplay,
child->xid, ShapeInput);
input_shape = NULL;
if (gdk_display_supports_input_shapes (display))
input_shape = _gdk_x11_xwindow_get_shape (display_x11->xdisplay,
child->xid, ShapeInput);
if (child->shape && input_shape)
{
cairo_region_intersect (child->shape, input_shape);

23
gdk/x11/gdkwindow-x11.c
View File

@ -3890,17 +3890,24 @@ _gdk_x11_xwindow_get_shape (Display *xdisplay,
shape = NULL;
rn = 0;
xrl = XShapeGetRectangles (xdisplay,
window,
shape_type, &rn, &ord);
/* Note that XShapeGetRectangles returns NULL in two situations:
* - the server doesn't support the SHAPE extension
* - the shape is empty
*
* Since we can't discriminate these here, we always return
* an empty shape. It is the callers responsibility to check
* whether the server supports the SHAPE extensions beforehand.
*/
xrl = XShapeGetRectangles (xdisplay, window, shape_type, &rn, &ord);
if (xrl == NULL || rn == 0)
if (rn == 0)
return cairo_region_create (); /* Empty */
if (ord != YXBanded)
{
/* This really shouldn't happen with any xserver, as they
generally convert regions to YXBanded internally */
* generally convert regions to YXBanded internally
*/
g_warning ("non YXBanded shape masks not supported");
XFree (xrl);
return NULL;
@ -3915,10 +3922,10 @@ _gdk_x11_xwindow_get_shape (Display *xdisplay,
rl[i].height = xrl[i].height;
}
XFree (xrl);
shape = cairo_region_create_rectangles (rl, rn);
g_free (rl);
return shape;
}
@ -3940,7 +3947,7 @@ gdk_x11_window_get_input_shape (GdkWindow *window)
{
#if defined(ShapeInput)
if (!GDK_WINDOW_DESTROYED (window) &&
gdk_display_supports_shapes (GDK_WINDOW_DISPLAY (window)))
gdk_display_supports_input_shapes (GDK_WINDOW_DISPLAY (window)))
return _gdk_x11_xwindow_get_shape (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window),
ShapeInput);