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[AppSwitcher] Port Alt-Tab switcher to custom_handler interface

Browse Source 
https://bugzilla.gnome.org/show_bug.cgi?id=590563
This commit is contained in:
Dan Winship 2009-09-15 11:11:32 -04:00
parent 24d42adc04
commit 11d884d724
8 changed files with 149 additions and 309 deletions
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82
js/ui/altTab.js
View File

@ -37,7 +37,9 @@ AltTabPopup.prototype = {
corner_radius: POPUP_GRID_SPACING,
padding: POPUP_GRID_SPACING,
spacing: POPUP_GRID_SPACING,
orientation: Big.BoxOrientation.VERTICAL });
orientation: Big.BoxOrientation.VERTICAL,
reactive: true });
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
// Icon grid. TODO: Investigate Nbtk.Grid once that lands. Currently
// just implemented using a chain of Big.Box.
@ -70,11 +72,12 @@ AltTabPopup.prototype = {
this.actor.append(this._indicator, Big.BoxPackFlags.FIXED);
this._items = [];
this._haveModal = false;
global.stage.add_actor(this.actor);
},
addWindow : function(win) {
_addWindow : function(win) {
let item = { window: win,
metaWindow: win.get_meta_window() };
@ -100,6 +103,31 @@ AltTabPopup.prototype = {
},
show : function(initialSelection) {
let appMonitor = Shell.AppMonitor.get_default();
let apps = appMonitor.get_running_apps ("");
if (!apps.length)
return false;
if (!Main.pushModal(this.actor))
return false;
this._haveModal = true;
this._keyPressEventId = global.stage.connect('key-press-event', Lang.bind(this, this._keyPressEvent));
this._keyReleaseEventId = global.stage.connect('key-release-event', Lang.bind(this, this._keyReleaseEvent));
// Fill in the windows
let windows = [];
for (let i = 0; i < apps.length; i++) {
let appWindows = appMonitor.get_windows_for_app(apps[i].get_id());
windows = windows.concat(appWindows);
}
windows.sort(function(w1, w2) { return w2.get_user_time() - w1.get_user_time(); });
for (let i = 0; i < windows.length; i++)
this._addWindow(windows[i].get_compositor_private());
// Need to specify explicit width and height because the
// window_group may not actually cover the whole screen
this._lightbox = new Lightbox.Lightbox(global.window_group,
@ -110,15 +138,56 @@ AltTabPopup.prototype = {
this.actor.x = Math.floor((global.screen_width - this.actor.width) / 2);
this.actor.y = Math.floor((global.screen_height - this.actor.height) / 2);
this.select(initialSelection);
this._updateSelection(initialSelection);
return true;
},
_keyPressEvent : function(actor, event) {
let keysym = event.get_key_symbol();
let backwards = (event.get_state() & Clutter.ModifierType.SHIFT_MASK);
if (keysym == Clutter.Tab)
this._updateSelection(backwards ? -1 : 1);
else if (keysym == Clutter.Escape)
this.destroy();
return true;
},
_keyReleaseEvent : function(actor, event) {
let keysym = event.get_key_symbol();
if (keysym == Clutter.Alt_L || keysym == Clutter.Alt_R) {
if (this._selected) {
Main.activateWindow(this._selected.metaWindow,
event.get_time());
}
this.destroy();
}
return true;
},
destroy : function() {
this.actor.destroy();
this._lightbox.destroy();
},
select : function(n) {
_onDestroy : function() {
if (this._haveModal)
Main.popModal(this.actor);
if (this._lightbox)
this._lightbox.destroy();
if (this._keyPressEventId)
global.stage.disconnect(this._keyPressEventId);
if (this._keyReleaseEventId)
global.stage.disconnect(this._keyReleaseEventId);
},
_updateSelection : function(delta) {
let n = ((this._selected ? this._selected.n : 0) + this._items.length + delta) % this._items.length;
if (this._selected) {
// Unselect previous
@ -177,7 +246,6 @@ AltTabPopup.prototype = {
},
_allocationChanged : function() {
if (this._selected)
this.select(this._selected.n);
this._updateSelection(0);
}
};

16
js/ui/windowManager.js
View File

@ -4,6 +4,7 @@ const Clutter = imports.gi.Clutter;
const Lang = imports.lang;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const Shell = imports.gi.Shell;
const AltTab = imports.ui.altTab;
const Main = imports.ui.main;
@ -39,7 +40,8 @@ WindowManager.prototype = {
shellwm.connect('destroy', Lang.bind(this, this._destroyWindow));
shellwm.connect('kill-destroy', Lang.bind(this, this._destroyWindowDone));
shellwm.connect('begin-alt-tab', Lang.bind(this, this._beginAltTab));
shellwm.takeover_keybinding('switch_windows');
shellwm.connect('keybinding::switch_windows', Lang.bind(this, this._startAppSwitcher));
},
_shouldAnimate : function(actor) {
@ -300,12 +302,10 @@ WindowManager.prototype = {
shellwm.completed_switch_workspace();
},
_beginAltTab : function(shellwm, handler) {
let popup = new AltTab.AltTabPopup();
_startAppSwitcher : function(shellwm, binding, window, backwards) {
let tabPopup = new AltTab.AltTabPopup();
handler.connect('window-added', function(handler, window) { popup.addWindow(window); });
handler.connect('show', function(handler, initialSelection) { popup.show(initialSelection); });
handler.connect('destroy', function() { popup.destroy(); });
handler.connect('notify::selected', function() { popup.select(handler.selected); });
}
if (!tabPopup.show(backwards ? -1 : 1))
tabPopup.destroy();
}
};

2
src/Makefile.am
View File

@ -52,8 +52,6 @@ CLEANFILES += $(SHELL_STAMP_FILES)
libgnome_shell_la_SOURCES = \
$(shell_built_sources) \
gnome-shell-plugin.c \
shell-alttab.c \
shell-alttab.h \
shell-app-monitor.c \
shell-app-monitor.h \
shell-app-system.c \

236
src/shell-alttab.c
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@ -1,236 +0,0 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include "shell-alttab.h"
#include "shell-global.h"
#include "shell-wm.h"
#include <mutter-plugin.h>
/* Our MetaAltTabHandler implementation; ideally we would implement
* this directly from JavaScript, but for now we can't. So we register
* this glue class as our MetaAltTabHandler and then when mutter
* creates one, we pass it on to ShellWM, which emits a signal to hand
* it off to javascript code, which then connects to the signals on
* this object.
*/
static void shell_alt_tab_handler_interface_init (MetaAltTabHandlerInterface *handler_iface);
G_DEFINE_TYPE_WITH_CODE (ShellAltTabHandler, shell_alt_tab_handler, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (META_TYPE_ALT_TAB_HANDLER,
shell_alt_tab_handler_interface_init))
/* Signals */
enum
{
WINDOW_ADDED,
SHOW,
DESTROY,
LAST_SIGNAL
};
static guint signals [LAST_SIGNAL] = { 0 };
enum
{
PROP_SELECTED = 1,
PROP_SCREEN,
PROP_IMMEDIATE
};
static void
shell_alt_tab_handler_init (ShellAltTabHandler *sth)
{
sth->windows = g_ptr_array_new ();
sth->selected = -1;
}
static void
shell_alt_tab_handler_constructed (GObject *object)
{
ShellGlobal *global = shell_global_get ();
ShellWM *wm;
g_object_get (G_OBJECT (global), "window-manager", &wm, NULL);
_shell_wm_begin_alt_tab (wm, SHELL_ALT_TAB_HANDLER (object));
g_object_unref (wm);
}
static void
shell_alt_tab_handler_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ShellAltTabHandler *sth = SHELL_ALT_TAB_HANDLER (object);
switch (prop_id)
{
case PROP_SCREEN:
/* We don't care */
break;
case PROP_IMMEDIATE:
sth->immediate_mode = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
shell_alt_tab_handler_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ShellAltTabHandler *sth = SHELL_ALT_TAB_HANDLER (object);
switch (prop_id)
{
case PROP_SELECTED:
g_value_set_int (value, sth->selected);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
shell_alt_tab_handler_finalize (GObject *object)
{
ShellAltTabHandler *sth = SHELL_ALT_TAB_HANDLER (object);
g_ptr_array_free (sth->windows, FALSE);
G_OBJECT_CLASS (shell_alt_tab_handler_parent_class)->finalize (object);
}
static void
shell_alt_tab_handler_add_window (MetaAltTabHandler *handler,
MetaWindow *window)
{
ShellAltTabHandler *sth = SHELL_ALT_TAB_HANDLER (handler);
g_ptr_array_add (sth->windows, window);
g_signal_emit (handler, signals[WINDOW_ADDED], 0,
meta_window_get_compositor_private (window));
}
static void
shell_alt_tab_handler_show (MetaAltTabHandler *handler,
MetaWindow *initial_selection)
{
ShellAltTabHandler *sth = SHELL_ALT_TAB_HANDLER (handler);
int i;
sth->selected = -1;
for (i = 0; i < sth->windows->len; i++)
{
if (sth->windows->pdata[i] == (gpointer)initial_selection)
{
sth->selected = i;
break;
}
}
g_signal_emit (handler, signals[SHOW], 0, sth->selected);
}
static void
shell_alt_tab_handler_destroy (MetaAltTabHandler *handler)
{
g_signal_emit (handler, signals[DESTROY], 0);
}
static void
shell_alt_tab_handler_forward (MetaAltTabHandler *handler)
{
ShellAltTabHandler *sth = SHELL_ALT_TAB_HANDLER (handler);
if (sth->selected == sth->windows->len - 1)
sth->selected = 0;
else
sth->selected++;
g_object_notify (G_OBJECT (handler), "selected");
}
static void
shell_alt_tab_handler_backward (MetaAltTabHandler *handler)
{
ShellAltTabHandler *sth = SHELL_ALT_TAB_HANDLER (handler);
if (sth->selected == 0)
sth->selected = sth->windows->len - 1;
else
sth->selected--;
g_object_notify (G_OBJECT (handler), "selected");
}
static MetaWindow *
shell_alt_tab_handler_get_selected (MetaAltTabHandler *handler)
{
ShellAltTabHandler *sth = SHELL_ALT_TAB_HANDLER (handler);
if (sth->selected > -1)
return sth->windows->pdata[sth->selected];
else
return NULL;
}
static void
shell_alt_tab_handler_class_init (ShellAltTabHandlerClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = shell_alt_tab_handler_constructed;
object_class->set_property = shell_alt_tab_handler_set_property;
object_class->get_property = shell_alt_tab_handler_get_property;
object_class->finalize = shell_alt_tab_handler_finalize;
g_object_class_override_property (object_class, PROP_SCREEN, "screen");
g_object_class_override_property (object_class, PROP_IMMEDIATE, "immediate");
g_object_class_install_property (object_class,
PROP_SELECTED,
g_param_spec_int ("selected",
"Selected",
"Selected window",
-1, G_MAXINT, -1,
G_PARAM_READABLE));
signals[WINDOW_ADDED] = g_signal_new ("window-added",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
MUTTER_TYPE_COMP_WINDOW);
signals[SHOW] = g_signal_new ("show",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__INT,
G_TYPE_NONE, 1,
G_TYPE_INT);
signals[DESTROY] = g_signal_new ("destroy",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
shell_alt_tab_handler_interface_init (MetaAltTabHandlerInterface *handler_iface)
{
handler_iface->add_window = shell_alt_tab_handler_add_window;
handler_iface->show = shell_alt_tab_handler_show;
handler_iface->destroy = shell_alt_tab_handler_destroy;
handler_iface->forward = shell_alt_tab_handler_forward;
handler_iface->backward = shell_alt_tab_handler_backward;
handler_iface->get_selected = shell_alt_tab_handler_get_selected;
}

34
src/shell-alttab.h
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@ -1,34 +0,0 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#ifndef SHELL_ALT_TAB_HANDLER_H
#define SHELL_ALT_TAB_HANDLER_H
#include <alttabhandler.h>
#define SHELL_TYPE_ALT_TAB_HANDLER (shell_alt_tab_handler_get_type ())
#define SHELL_ALT_TAB_HANDLER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), SHELL_TYPE_ALT_TAB_HANDLER, ShellAltTabHandler))
#define SHELL_ALT_TAB_HANDLER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), SHELL_TYPE_ALT_TAB_HANDLER, ShellAltTabHandlerClass))
#define SHELL_IS_ALT_TAB_HANDLER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SHELL_ALT_TAB_HANDLER_TYPE))
#define SHELL_IS_ALT_TAB_HANDLER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), SHELL_TYPE_ALT_TAB_HANDLER))
#define SHELL_ALT_TAB_HANDLER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), SHELL_TYPE_ALT_TAB_HANDLER, ShellAltTabHandlerClass))
typedef struct _ShellAltTabHandler ShellAltTabHandler;
typedef struct _ShellAltTabHandlerClass ShellAltTabHandlerClass;
struct _ShellAltTabHandler {
GObject parent_instance;
GPtrArray *windows;
int selected;
gboolean immediate_mode;
};
struct _ShellAltTabHandlerClass {
GObjectClass parent_class;
};
GType shell_alt_tab_handler_get_type (void);
#endif

1
src/shell-marshal.list
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@ -2,3 +2,4 @@ VOID:INT,INT,INT
VOID:OBJECT,INT,INT,INT,INT
VOID:BOXED
VOID:BOXED,OBJECT
VOID:STRING,OBJECT,BOOLEAN

78
src/shell-wm.c
View File

@ -1,9 +1,13 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include <string.h>
#include "shell-wm.h"
#include "shell-global.h"
#include "shell-marshal.h"
#include <keybindings.h>
struct _ShellWM {
GObject parent;
@ -27,7 +31,7 @@ enum
SWITCH_WORKSPACE,
KILL_SWITCH_WORKSPACE,
BEGIN_ALT_TAB,
KEYBINDING,
LAST_SIGNAL
};
@ -42,7 +46,6 @@ static guint shell_wm_signals [LAST_SIGNAL] = { 0 };
static void
shell_wm_init (ShellWM *wm)
{
meta_alt_tab_handler_register (SHELL_TYPE_ALT_TAB_HANDLER);
}
static void
@ -169,15 +172,32 @@ shell_wm_class_init (ShellWMClass *klass)
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
shell_wm_signals[BEGIN_ALT_TAB] =
g_signal_new ("begin-alt-tab",
/**
* ShellWM::keybinding:
* @shellwm: the #ShellWM
* @binding: the keybinding name
* @window: for window keybindings, the #MetaWindow
* @backwards: for "reversible" keybindings, whether or not
* the backwards (Shifted) variant was invoked
*
* Emitted when a keybinding captured via
* shell_wm_takeover_keybinding() is invoked. The keybinding name
* (which has underscores, not hyphens) is also included as the
* detail of the signal name, so you can connect just specific
* keybindings.
*/
shell_wm_signals[KEYBINDING] =
g_signal_new ("keybinding",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
0,
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
META_TYPE_ALT_TAB_HANDLER);
_shell_marshal_VOID__STRING_OBJECT_BOOLEAN,
G_TYPE_NONE, 3,
G_TYPE_STRING,
META_TYPE_WINDOW,
G_TYPE_BOOLEAN);
}
void
@ -391,14 +411,6 @@ _shell_wm_destroy (ShellWM *wm,
g_signal_emit (wm, shell_wm_signals[DESTROY], 0, actor);
}
/* Called from shell-alttab.c */
void
_shell_wm_begin_alt_tab (ShellWM *wm,
ShellAltTabHandler *handler)
{
g_signal_emit (wm, shell_wm_signals[BEGIN_ALT_TAB], 0, handler);
}
/**
* shell_wm_new:
* @plugin: the #MutterPlugin
@ -417,3 +429,37 @@ shell_wm_new (MutterPlugin *plugin)
return wm;
}
static void
shell_wm_key_handler (MetaDisplay *display,
MetaScreen *screen,
MetaWindow *window,
XEvent *event,
MetaKeyBinding *binding,
gpointer data)
{
ShellWM *wm = data;
gboolean backwards = (event->xkey.state & ShiftMask);
g_signal_emit (wm, shell_wm_signals[KEYBINDING],
g_quark_from_string (binding->name),
binding->name, window, backwards);
}
/**
* shell_wm_takeover_keybinding:
* @wm: the #ShellWM
* @binding_name: a mutter keybinding name
*
* Tells mutter to forward keypresses for @binding_name to the shell
* rather than processing them internally. This will cause a
* #ShellWM::keybinding signal to be emitted when that key is pressed.
*/
void
shell_wm_takeover_keybinding (ShellWM *wm,
const char *binding_name)
{
meta_keybindings_set_custom_handler (binding_name,
shell_wm_key_handler,
wm, NULL);
}

9
src/shell-wm.h
View File

@ -4,8 +4,6 @@
#include <glib-object.h>
#include <mutter-plugin.h>
#include "shell-alttab.h"
G_BEGIN_DECLS
typedef struct _ShellWM ShellWM;
@ -73,10 +71,9 @@ void _shell_wm_kill_effect (ShellWM *wm,
MutterWindow *actor,
gulong events);
/* Called by ShellAltTabHandler */
void _shell_wm_begin_alt_tab (ShellWM *wm,
ShellAltTabHandler *handler);
/* Keybinding stuff */
void shell_wm_takeover_keybinding (ShellWM *wm,
const char *binding_name);
G_END_DECLS