mirror of
https://github.com/brl/mutter.git
synced 2024-11-09 23:46:33 -05:00
Fix custom-alt-tabs for single-handling of key events
The changes to enforce single handling of all key events were breaking custom-alt-tab keypress handlers, since that code was assuming that key event would get to process_tab_grab(), and then maybe to process_event() and then to the plugin's xevent_filter to detect a key release. We centeralize all of this handling into process_tab_grab() and either - Invoke a custom handler for the key press - Select the current window on modifier release by calling a new pseudo-binding "tab_popup_select" - Cancel the grab on an unbound key by calling a new pseudo-binding "tab_popup_cancel" http://bugzilla.gnome.org/show_bug.cgi?id=590754
This commit is contained in:
Owen W. Taylor
parent
67682a2683
commit
7b0ba87b24
@ -475,11 +475,11 @@ regrab_key_bindings (MetaDisplay *display)
|
||||
g_slist_free (windows);
|
||||
}
|
||||
|
||||
static MetaKeyBindingAction
|
||||
display_get_keybinding_action (MetaDisplay *display,
|
||||
unsigned int keysym,
|
||||
unsigned int keycode,
|
||||
unsigned long mask)
|
||||
static MetaKeyBinding *
|
||||
display_get_keybinding (MetaDisplay *display,
|
||||
unsigned int keysym,
|
||||
unsigned int keycode,
|
||||
unsigned long mask)
|
||||
{
|
||||
int i;
|
||||
|
||||
@ -490,13 +490,29 @@ display_get_keybinding_action (MetaDisplay *display,
|
||||
display->key_bindings[i].keycode == keycode &&
|
||||
display->key_bindings[i].mask == mask)
|
||||
{
|
||||
return meta_prefs_get_keybinding_action (display->key_bindings[i].name);
|
||||
return &display->key_bindings[i];
|
||||
}
|
||||
|
||||
--i;
|
||||
}
|
||||
|
||||
return META_KEYBINDING_ACTION_NONE;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static MetaKeyBindingAction
|
||||
display_get_keybinding_action (MetaDisplay *display,
|
||||
unsigned int keysym,
|
||||
unsigned int keycode,
|
||||
unsigned long mask)
|
||||
{
|
||||
MetaKeyBinding *binding;
|
||||
|
||||
binding = display_get_keybinding (display, keysym, keycode, mask);
|
||||
|
||||
if (binding)
|
||||
return meta_prefs_get_keybinding_action (binding->name);
|
||||
else
|
||||
return META_KEYBINDING_ACTION_NONE;
|
||||
}
|
||||
|
||||
void
|
||||
@ -1197,6 +1213,45 @@ process_overlay_key (MetaDisplay *display,
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
invoke_handler (MetaDisplay *display,
|
||||
MetaScreen *screen,
|
||||
MetaKeyHandler *handler,
|
||||
MetaWindow *window,
|
||||
XEvent *event,
|
||||
MetaKeyBinding *binding)
|
||||
|
||||
{
|
||||
if (handler->func)
|
||||
(* handler->func) (display, screen,
|
||||
handler->flags & BINDING_PER_WINDOW ?
|
||||
window : NULL,
|
||||
event,
|
||||
binding,
|
||||
handler->user_data);
|
||||
else
|
||||
(* handler->default_func) (display, screen,
|
||||
handler->flags & BINDING_PER_WINDOW ?
|
||||
window: NULL,
|
||||
event,
|
||||
binding,
|
||||
NULL);
|
||||
}
|
||||
|
||||
static void
|
||||
invoke_handler_by_name (MetaDisplay *display,
|
||||
MetaScreen *screen,
|
||||
const char *handler_name,
|
||||
MetaWindow *window,
|
||||
XEvent *event)
|
||||
{
|
||||
MetaKeyHandler *handler;
|
||||
|
||||
handler = find_handler (key_handlers, handler_name);
|
||||
if (handler)
|
||||
invoke_handler (display, screen, handler, window, event, NULL);
|
||||
}
|
||||
|
||||
/* now called from only one place, may be worth merging */
|
||||
static gboolean
|
||||
process_event (MetaKeyBinding *bindings,
|
||||
@ -1253,20 +1308,7 @@ process_event (MetaKeyBinding *bindings,
|
||||
*/
|
||||
display->allow_terminal_deactivation = TRUE;
|
||||
|
||||
if (handler->func)
|
||||
(* handler->func) (display, screen,
|
||||
bindings[i].handler->flags & BINDING_PER_WINDOW ?
|
||||
window: NULL,
|
||||
event,
|
||||
&bindings[i],
|
||||
handler->user_data);
|
||||
else
|
||||
(* handler->default_func) (display, screen,
|
||||
bindings[i].handler->flags & BINDING_PER_WINDOW ?
|
||||
window: NULL,
|
||||
event,
|
||||
&bindings[i],
|
||||
NULL);
|
||||
invoke_handler (display, screen, handler, window, event, &bindings[i]);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
@ -1985,6 +2027,7 @@ process_tab_grab (MetaDisplay *display,
|
||||
XEvent *event,
|
||||
KeySym keysym)
|
||||
{
|
||||
MetaKeyBinding *binding;
|
||||
MetaKeyBindingAction action;
|
||||
gboolean popup_not_showing;
|
||||
gboolean backward;
|
||||
@ -1994,79 +2037,78 @@ process_tab_grab (MetaDisplay *display,
|
||||
if (screen != display->grab_screen)
|
||||
return FALSE;
|
||||
|
||||
action = display_get_keybinding_action (display,
|
||||
keysym,
|
||||
event->xkey.keycode,
|
||||
display->grab_mask);
|
||||
binding = display_get_keybinding (display,
|
||||
keysym,
|
||||
event->xkey.keycode,
|
||||
display->grab_mask);
|
||||
if (binding)
|
||||
action = meta_prefs_get_keybinding_action (binding->name);
|
||||
else
|
||||
action = META_KEYBINDING_ACTION_NONE;
|
||||
|
||||
/*
|
||||
* If there is no tab_pop up object, i.e., there is some custom handler
|
||||
* implementing Alt+Tab & Co., we call this custom handler; we do not
|
||||
* mess about with the grab, as that is up to the handler to deal with.
|
||||
* There are currently two different ways of customizing Alt-Tab, you can either
|
||||
* provide a replacement AltTabHandler object, or you can hook into the keybindings
|
||||
* meta_keybindings_set_custom_handler() and call meta_display_begin_grab_op()
|
||||
* yourself with one of the "tabbing" grab ops META_GRAB_OP_KEYBOARD_TABBING_NORMAL,
|
||||
* etc. See meta_display_process_key_event() for the complete list. If screen->tab_handler
|
||||
* is NULL, the latter mechanism is being used. We skip most of our normal
|
||||
* processing and just make sure that the right custom handlers get called.
|
||||
*/
|
||||
if (!screen->tab_handler)
|
||||
{
|
||||
MetaKeyHandler *handler = NULL;
|
||||
const gchar *handler_name = NULL;
|
||||
if (event->type == KeyRelease)
|
||||
{
|
||||
if (end_keyboard_grab (display, event->xkey.keycode))
|
||||
{
|
||||
invoke_handler_by_name (display, screen, "tab_popup_select", NULL, event);
|
||||
|
||||
/* We return FALSE to end the grab; if the handler ended the grab itself
|
||||
* that will be a noop. If the handler didn't end the grab, then it's a
|
||||
* safety measure to prevent a stuck grab.
|
||||
*/
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
switch (action)
|
||||
{
|
||||
case META_KEYBINDING_ACTION_CYCLE_PANELS:
|
||||
handler_name = "cycle_group";
|
||||
break;
|
||||
case META_KEYBINDING_ACTION_CYCLE_WINDOWS:
|
||||
handler_name = "cycle_windows";
|
||||
break;
|
||||
case META_KEYBINDING_ACTION_CYCLE_PANELS_BACKWARD:
|
||||
handler_name = "cycle_panels_backward";
|
||||
break;
|
||||
case META_KEYBINDING_ACTION_CYCLE_WINDOWS_BACKWARD:
|
||||
handler_name = "cycle_windows_backward";
|
||||
break;
|
||||
case META_KEYBINDING_ACTION_SWITCH_PANELS:
|
||||
handler_name = "switch_panels";
|
||||
break;
|
||||
case META_KEYBINDING_ACTION_SWITCH_WINDOWS:
|
||||
handler_name = "switch_windows";
|
||||
break;
|
||||
case META_KEYBINDING_ACTION_SWITCH_PANELS_BACKWARD:
|
||||
handler_name = "switch_panels_backward";
|
||||
break;
|
||||
case META_KEYBINDING_ACTION_SWITCH_WINDOWS_BACKWARD:
|
||||
handler_name = "switch_windows_backward";
|
||||
break;
|
||||
case META_KEYBINDING_ACTION_CYCLE_GROUP:
|
||||
handler_name = "cycle_group";
|
||||
break;
|
||||
case META_KEYBINDING_ACTION_CYCLE_GROUP_BACKWARD:
|
||||
handler_name = "cycle_group_backward";
|
||||
break;
|
||||
case META_KEYBINDING_ACTION_SWITCH_GROUP:
|
||||
handler_name = "switch_group";
|
||||
break;
|
||||
case META_KEYBINDING_ACTION_SWITCH_GROUP_BACKWARD:
|
||||
handler_name = "switch_group_backward";
|
||||
/* These are the tab-popup bindings. If a custom Alt-Tab implementation
|
||||
* is in effect, we expect it to want to handle all of these as a group
|
||||
*
|
||||
* If there are some of them that the custom implementation didn't
|
||||
* handle, we treat them as "unbound" for the duration - running the
|
||||
* normal handlers could get us into trouble.
|
||||
*/
|
||||
if (binding->handler &&
|
||||
binding->handler->func &&
|
||||
binding->handler->func != binding->handler->default_func)
|
||||
{
|
||||
invoke_handler (display, screen, binding->handler, NULL, event, binding);
|
||||
return TRUE;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
/*
|
||||
* This is the case when the Alt key is released; we preserve
|
||||
* the grab, as it is up to the custom implementaiton to free it
|
||||
* (a plugin can catch this in their xevent_filter function).
|
||||
*/
|
||||
return TRUE;
|
||||
break;
|
||||
}
|
||||
|
||||
/*
|
||||
* We do not want to actually call the handler, we just want to ensure
|
||||
* that if a custom handler is installed, we do not release the grab here.
|
||||
* The handler will get called as normal in the process_event() function.
|
||||
*/
|
||||
handler = find_handler (key_handlers, handler_name);
|
||||
|
||||
if (!handler || !handler->func || handler->func == handler->default_func)
|
||||
return FALSE;
|
||||
|
||||
return TRUE;
|
||||
/* Some unhandled key press */
|
||||
invoke_handler_by_name (display, screen, "tab_popup_cancel", NULL, event);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (event->type == KeyRelease &&
|
||||
@ -3048,6 +3090,27 @@ handle_cycle (MetaDisplay *display,
|
||||
backwards, FALSE);
|
||||
}
|
||||
|
||||
static void
|
||||
handle_tab_popup_select (MetaDisplay *display,
|
||||
MetaScreen *screen,
|
||||
MetaWindow *window,
|
||||
XEvent *event,
|
||||
MetaKeyBinding *binding,
|
||||
gpointer dummy)
|
||||
{
|
||||
/* Stub for custom handlers; no default implementation */
|
||||
}
|
||||
|
||||
static void
|
||||
handle_tab_popup_cancel (MetaDisplay *display,
|
||||
MetaScreen *screen,
|
||||
MetaWindow *window,
|
||||
XEvent *event,
|
||||
MetaKeyBinding *binding,
|
||||
gpointer dummy)
|
||||
{
|
||||
/* Stub for custom handlers; no default implementation */
|
||||
}
|
||||
|
||||
static void
|
||||
handle_toggle_fullscreen (MetaDisplay *display,
|
||||
|
||||
@ -186,6 +186,18 @@ keybind (cycle_panels_backward, handle_cycle, META_TAB_LIST_DOCKS,
|
||||
_("Move backward between panels and the desktop immediately"))
|
||||
|
||||
/***********************************/
|
||||
|
||||
/* These two are special pseudo-bindings that are provided for allowing
|
||||
* custom handlers, but will never be bound to a key. While a tab
|
||||
* grab is in effect, they are invoked for releasing the primary modifier
|
||||
* or pressing some unbound key, respectively.
|
||||
*/
|
||||
keybind (tab_popup_select, handle_tab_popup_select, 0, 0, NULL,
|
||||
"Select window from tab popup")
|
||||
keybind (tab_popup_cancel, handle_tab_popup_cancel, 0, 0, NULL,
|
||||
"Cancel tab popup")
|
||||
|
||||
/***********************************/
|
||||
|
||||
keybind (show_desktop, handle_show_desktop, 0, 0, "<Control><Alt>d",
|
||||
_("Hide all normal windows and set focus to the desktop"))
|
||||
|
||||
Loading…
Reference in New Issue
Block a user