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core: Simplify grab tracking

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We only allow partial grabs in the case of a keyboard-type MetaGrabOp
happening while the pointer cannot be grabbed. In that case, it's not
a big stretch to unconditionally ungrab the pointer device at the time
of undoing the grab, as it will be always ineffective (not even implicit
grabs on frame windows can happen now, inside Mutter).

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2683>
This commit is contained in:
Carlos Garnacho 2022-09-30 15:48:14 +02:00 committed by Marge Bot
parent 452e4f4801
commit 58e88fc8db
1 changed files with 11 additions and 20 deletions
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31
src/core/display.c
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@ -904,8 +904,6 @@ meta_display_new (MetaContext *context,
display->current_time = META_CURRENT_TIME;
display->grab_have_keyboard = FALSE;
display->grab_op = META_GRAB_OP_NONE;
display->grab_window = NULL;
display->grab_tile_mode = META_TILE_NONE;
@ -1840,6 +1838,7 @@ meta_display_begin_grab_op (MetaDisplay *display,
{
MetaBackend *backend = backend_from_display (display);
MetaWindow *grab_window = NULL;
gboolean grab_have_pointer = FALSE, grab_have_keyboard = FALSE;
g_assert (window != NULL);
@ -1876,25 +1875,23 @@ meta_display_begin_grab_op (MetaDisplay *display,
g_assert (grab_window != NULL);
g_assert (op != META_GRAB_OP_NONE);
display->grab_have_pointer = FALSE;
if (meta_backend_grab_device (backend, META_VIRTUAL_CORE_POINTER_ID, timestamp))
display->grab_have_pointer = TRUE;
grab_have_pointer = TRUE;
if (!display->grab_have_pointer && !meta_grab_op_is_keyboard (op))
if (!grab_have_pointer && !meta_grab_op_is_keyboard (op))
{
meta_topic (META_DEBUG_WINDOW_OPS, "XIGrabDevice() failed");
return FALSE;
}
/* Grab keys when beginning window ops; see #126497 */
display->grab_have_keyboard = meta_window_grab_all_keys (grab_window, timestamp);
grab_have_keyboard = meta_window_grab_all_keys (grab_window, timestamp);
if (!display->grab_have_keyboard)
if (!grab_have_keyboard)
{
meta_topic (META_DEBUG_WINDOW_OPS, "grabbing all keys failed, ungrabbing pointer");
meta_backend_ungrab_device (backend, META_VIRTUAL_CORE_POINTER_ID, timestamp);
display->grab_have_pointer = FALSE;
grab_have_pointer = FALSE;
return FALSE;
}
@ -1940,6 +1937,7 @@ meta_display_end_grab_op (MetaDisplay *display,
{
MetaWindow *grab_window = display->grab_window;
MetaGrabOp grab_op = display->grab_op;
MetaBackend *backend = backend_from_display (display);
meta_topic (META_DEBUG_WINDOW_OPS,
"Ending grab op %u at time %u", grab_op, timestamp);
@ -1969,18 +1967,11 @@ meta_display_end_grab_op (MetaDisplay *display,
meta_window_grab_op_ended (grab_window, grab_op);
if (display->grab_have_pointer)
{
MetaBackend *backend = backend_from_display (display);
meta_backend_ungrab_device (backend, META_VIRTUAL_CORE_POINTER_ID, timestamp);
}
meta_backend_ungrab_device (backend, META_VIRTUAL_CORE_POINTER_ID, timestamp);
if (display->grab_have_keyboard)
{
meta_topic (META_DEBUG_WINDOW_OPS,
"Ungrabbing all keys timestamp %u", timestamp);
meta_window_ungrab_all_keys (grab_window, timestamp);
}
meta_topic (META_DEBUG_WINDOW_OPS,
"Ungrabbing all keys timestamp %u", timestamp);
meta_window_ungrab_all_keys (grab_window, timestamp);
display->grab_window = NULL;
display->grab_tile_mode = META_TILE_NONE;