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Track the X Shape input region and use it for picking

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We now track whether a window has an input shape specified via the X
Shape extension. Intersecting that with the bounding shape (as required
by the X Shape extension) we use the resulting rectangles to paint
window silhouettes when picking. As well as improving the correctness of
picking this should also be much more efficient because typically when
only picking solid rectangles then the need to actually render and issue
a read_pixels request can be optimized away and instead the picking is
done on the cpu.
This commit is contained in:
Robert Bragg
2012-01-19 01:20:02 +00:00
committed by Jasper St. Pierre
parent f0c503b5a9
commit 531be6c413
6 changed files with 257 additions and 61 deletions
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27
src/core/display.c
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@@ -2283,6 +2283,33 @@ event_callback (XEvent *event,
window->desc);
}
if (display->compositor)
meta_compositor_window_shape_changed (display->compositor,
window);
}
else if (sev->kind == ShapeInput)
{
if (sev->shaped && !window->has_input_shape)
{
window->has_input_shape = TRUE;
meta_topic (META_DEBUG_SHAPES,
"Window %s now has an input shape\n",
window->desc);
}
else if (!sev->shaped && window->has_input_shape)
{
window->has_input_shape = FALSE;
meta_topic (META_DEBUG_SHAPES,
"Window %s no longer has an input shape\n",
window->desc);
}
else
{
meta_topic (META_DEBUG_SHAPES,
"Window %s input shape changed\n",
window->desc);
}
if (display->compositor)
meta_compositor_window_shape_changed (display->compositor,
window);