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Restore original stacking when aborting an alt-esc window switch

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2005-01-23  Elijah Newren  <newren@gmail.com>

	Restore original stacking when aborting an alt-esc window switch
	operation.  Fixes #123576.

	* src/display.c: (GRAB_OP_IS_WINDOW_SWITCH): new macro,
	(meta_display_close): clear grab_old_window_stacking if non-NULL,
	(event_callback): restore stack positions if alt-esc op cancelled
	with button press, (meta_display_begin_grab_op): store the old
	stacking positions, (meta_display_end_grab_op): free the old stack
	positions

	* src/display.h: (struct _MetaDisplay): add a
	grab_old_window_stacking list

	* src/keybindings.c: (process_tab_grab): restore stack positions
	if alt-esc op cancelled with an errant key press

	* src/stack.c: (compare_just_window_stack_position): new
	GCompareFunc function, (meta_stack_get_positions): get current
	stack positions, (compare_pointers): new GCompareFunc function,
	(lists_contain_same_windows): simple utility func to see if two
	lists contains the same windows, (meta_stack_set_positions): new
	function to set the positions of all the windows in the stack

	* src/stack.h: (meta_stack_get_postions,
	meta_stack_set_positions): new functions
This commit is contained in:
Elijah Newren 2005-01-24 05:58:30 +00:00 committed by Elijah Newren
parent 814cc4b698
commit 2d0d5e8cac
6 changed files with 181 additions and 4 deletions
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28
ChangeLog
View File

@ -1,3 +1,31 @@
2005-01-23 Elijah Newren <newren@gmail.com>
Restore original stacking when aborting an alt-esc window switch
operation. Fixes #123576.
* src/display.c: (GRAB_OP_IS_WINDOW_SWITCH): new macro,
(meta_display_close): clear grab_old_window_stacking if non-NULL,
(event_callback): restore stack positions if alt-esc op cancelled
with button press, (meta_display_begin_grab_op): store the old
stacking positions, (meta_display_end_grab_op): free the old stack
positions
* src/display.h: (struct _MetaDisplay): add a
grab_old_window_stacking list
* src/keybindings.c: (process_tab_grab): restore stack positions
if alt-esc op cancelled with an errant key press
* src/stack.c: (compare_just_window_stack_position): new
GCompareFunc function, (meta_stack_get_positions): get current
stack positions, (compare_pointers): new GCompareFunc function,
(lists_contain_same_windows): simple utility func to see if two
lists contains the same windows, (meta_stack_set_positions): new
function to set the positions of all the windows in the stack
* src/stack.h: (meta_stack_get_postions,
meta_stack_set_positions): new functions
2005-01-23 Elijah Newren <newren@gmail.com>
Patch from John Paul Wallington to fix #163420.

43
src/display.c
View File

@ -63,6 +63,12 @@
#define USE_GDK_DISPLAY
#define GRAB_OP_IS_WINDOW_SWITCH(g) \
(g == META_GRAB_OP_KEYBOARD_TABBING_NORMAL || \
g == META_GRAB_OP_KEYBOARD_TABBING_DOCK || \
g == META_GRAB_OP_KEYBOARD_ESCAPING_NORMAL || \
g == META_GRAB_OP_KEYBOARD_ESCAPING_DOCK)
typedef struct
{
MetaDisplay *display;
@ -790,6 +796,9 @@ meta_display_close (MetaDisplay *display)
meta_prefs_remove_listener (prefs_changed_callback, display);
meta_display_remove_autoraise_callback (display);
if (display->grab_old_window_stacking)
g_list_free (display->grab_old_window_stacking);
#ifdef USE_GDK_DISPLAY
/* Stop caring about events */
@ -1574,6 +1583,16 @@ event_callback (XEvent *event,
(display->grab_window ?
display->grab_window->desc :
"none"));
if (GRAB_OP_IS_WINDOW_SWITCH (display->grab_op))
{
MetaScreen *screen;
meta_topic (META_DEBUG_WINDOW_OPS,
"Syncing to old stack positions.\n");
screen =
meta_display_screen_for_root (display, event->xany.window);
meta_stack_set_positions (screen->stack,
display->grab_old_window_stacking);
}
meta_display_end_grab_op (display,
event->xbutton.time);
}
@ -3289,6 +3308,16 @@ meta_display_begin_grab_op (MetaDisplay *display,
g_assert (display->grab_window != NULL || display->grab_screen != NULL);
g_assert (display->grab_op != META_GRAB_OP_NONE);
/* Save the old stacking */
if (GRAB_OP_IS_WINDOW_SWITCH (display->grab_op))
{
meta_topic (META_DEBUG_WINDOW_OPS,
"Saving old stack positions; old pointer was %p.\n",
display->grab_old_window_stacking);
display->grab_old_window_stacking =
meta_stack_get_positions (screen->stack);
}
/* Do this last, after everything is set up. */
switch (op)
{
@ -3340,10 +3369,7 @@ meta_display_end_grab_op (MetaDisplay *display,
if (display->grab_window != NULL)
display->grab_window->shaken_loose = FALSE;
if (display->grab_op == META_GRAB_OP_KEYBOARD_TABBING_NORMAL ||
display->grab_op == META_GRAB_OP_KEYBOARD_TABBING_DOCK ||
display->grab_op == META_GRAB_OP_KEYBOARD_ESCAPING_NORMAL ||
display->grab_op == META_GRAB_OP_KEYBOARD_ESCAPING_DOCK ||
if (GRAB_OP_IS_WINDOW_SWITCH (display->grab_op) ||
display->grab_op == META_GRAB_OP_KEYBOARD_WORKSPACE_SWITCHING)
{
meta_ui_tab_popup_free (display->grab_screen->tab_popup);
@ -3355,6 +3381,15 @@ meta_display_end_grab_op (MetaDisplay *display,
display->ungrab_should_not_cause_focus_window = display->grab_xwindow;
}
if (display->grab_old_window_stacking != NULL)
{
meta_topic (META_DEBUG_WINDOW_OPS,
"Clearing out the old stack position, which was %p.\n",
display->grab_old_window_stacking);
g_list_free (display->grab_old_window_stacking);
display->grab_old_window_stacking = NULL;
}
if (display->grab_wireframe_active)
{
display->grab_wireframe_active = FALSE;

1
src/display.h
View File

@ -265,6 +265,7 @@ struct _MetaDisplay
MetaResizePopup *grab_resize_popup;
GTimeVal grab_last_moveresize_time;
Time grab_motion_notify_time;
GList* grab_old_window_stacking;
/* we use property updates as sentinels for certain window focus events
* to avoid some race conditions on EnterNotify events

5
src/keybindings.c
View File

@ -2475,6 +2475,11 @@ process_tab_grab (MetaDisplay *display,
/* end grab */
meta_topic (META_DEBUG_KEYBINDINGS,
"Ending tabbing/cycling, uninteresting key pressed\n");
meta_topic (META_DEBUG_KEYBINDINGS,
"Syncing to old stack positions.\n");
meta_stack_set_positions (screen->stack,
screen->display->grab_old_window_stacking);
}
return key_used;

104
src/stack.c
View File

@ -1466,6 +1466,110 @@ meta_stack_windows_cmp (MetaStack *stack,
return 0; /* not reached */
}
static int
compare_just_window_stack_position (void *a,
void *b)
{
MetaWindow *window_a = a;
MetaWindow *window_b = b;
if (window_a->stack_position < window_b->stack_position)
return -1; /* move window_a earlier in list */
else if (window_a->stack_position > window_b->stack_position)
return 1;
else
return 0; /* not reached */
}
GList*
meta_stack_get_positions (MetaStack *stack)
{
GList *tmp;
/* Make sure to handle any adds or removes */
meta_stack_ensure_sorted (stack);
tmp = g_list_copy (stack->sorted);
tmp = g_list_sort (tmp, (GCompareFunc) compare_just_window_stack_position);
return tmp;
}
gint
compare_pointers (gconstpointer a,
gconstpointer b)
{
if (a > b)
return 1;
else if (a < b)
return -1;
else
return 0;
}
static gboolean
lists_contain_same_windows (GList *a,
GList *b)
{
GList *copy1, *copy2;
GList *tmp1, *tmp2;
if (g_list_length (a) != g_list_length (b))
return FALSE;
tmp1 = copy1 = g_list_sort (g_list_copy (a), compare_pointers);
tmp2 = copy2 = g_list_sort (g_list_copy (b), compare_pointers);
while (tmp1 && tmp1->data == tmp2->data) /* tmp2 is non-NULL if tmp1 is */
{
tmp1 = tmp1->next;
tmp2 = tmp2->next;
}
g_list_free (copy1);
g_list_free (copy2);
return (tmp1 == NULL); /* tmp2 is non-NULL if tmp1 is */
}
void
meta_stack_set_positions (MetaStack *stack,
GList *windows)
{
int i;
GList *tmp;
/* Make sure any adds or removes aren't in limbo -- is this needed? */
meta_stack_ensure_sorted (stack);
if (!lists_contain_same_windows (windows, stack->sorted))
{
meta_warning ("This list of windows has somehow changed; not resetting "
"positions of the windows.\n");
return;
}
g_list_free (stack->sorted);
stack->sorted = g_list_copy (windows);
stack->need_resort = TRUE;
stack->need_constrain = TRUE;
i = 0;
tmp = windows;
while (tmp != NULL)
{
MetaWindow *w = tmp->data;
w->stack_position = i++;
tmp = tmp->next;
}
meta_topic (META_DEBUG_STACK,
"Reset the stack positions of (nearly) all windows\n");
meta_stack_sync_to_server (stack);
}
void
meta_window_set_stack_position_no_sync (MetaWindow *window,
int position)

4
src/stack.h
View File

@ -140,4 +140,8 @@ int meta_stack_windows_cmp (MetaStack *stack,
void meta_window_set_stack_position (MetaWindow *window,
int position);
GList* meta_stack_get_positions (MetaStack *stack);
void meta_stack_set_positions (MetaStack *stack,
GList *windows);
#endif