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gnome-shell/js/ui/panel.js
Giovanni Campagna c3afe1a83a Show the panel above the screenshield when locked 
Track locked status and use it to provide a reduced version of
the panel in the locked screen. Accessibility, input sources and
volume menus are preserved, without the link to the control center.
Network, battery and user menu are reduced to pure indicators,
with no menu.
This is similar to the design but not exactly, because designers
in IRC said that network needs more analysis before exposing, and
because the design didn't account for a11y and IM (so the one menu
metaphor is not really appropriate).

https://bugzilla.gnome.org/show_bug.cgi?id=619955
2012-07-21 15:40:28 +02:00

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Cairo = imports.cairo;
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Gtk = imports.gi.Gtk;
const Lang = imports.lang;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const Pango = imports.gi.Pango;
const Shell = imports.gi.Shell;
const St = imports.gi.St;
const Signals = imports.signals;
const Atk = imports.gi.Atk;
const CtrlAltTab = imports.ui.ctrlAltTab;
const DND = imports.ui.dnd;
const Layout = imports.ui.layout;
const Overview = imports.ui.overview;
const PopupMenu = imports.ui.popupMenu;
const PanelMenu = imports.ui.panelMenu;
const DateMenu = imports.ui.dateMenu;
const Main = imports.ui.main;
const Tweener = imports.ui.tweener;
const PANEL_ICON_SIZE = 24;
const BUTTON_DND_ACTIVATION_TIMEOUT = 250;
const ANIMATED_ICON_UPDATE_TIMEOUT = 100;
const SPINNER_ANIMATION_TIME = 0.2;
// To make sure the panel corners blend nicely with the panel,
// we draw background and borders the same way, e.g. drawing
// them as filled shapes from the outside inwards instead of
// using cairo stroke(). So in order to give the border the
// appearance of being drawn on top of the background, we need
// to blend border and background color together.
// For that purpose we use the following helper methods, taken
// from st-theme-node-drawing.c
function _norm(x) {
return Math.round(x / 255);
}
function _over(srcColor, dstColor) {
let src = _premultiply(srcColor);
let dst = _premultiply(dstColor);
let result = new Clutter.Color();
result.alpha = src.alpha + _norm((255 - src.alpha) * dst.alpha);
result.red = src.red + _norm((255 - src.alpha) * dst.red);
result.green = src.green + _norm((255 - src.alpha) * dst.green);
result.blue = src.blue + _norm((255 - src.alpha) * dst.blue);
return _unpremultiply(result);
}
function _premultiply(color) {
return new Clutter.Color({ red: _norm(color.red * color.alpha),
green: _norm(color.green * color.alpha),
blue: _norm(color.blue * color.alpha),
alpha: color.alpha });
};
function _unpremultiply(color) {
if (color.alpha == 0)
return new Clutter.Color();
let red = Math.min((color.red * 255 + 127) / color.alpha, 255);
let green = Math.min((color.green * 255 + 127) / color.alpha, 255);
let blue = Math.min((color.blue * 255 + 127) / color.alpha, 255);
return new Clutter.Color({ red: red, green: green,
blue: blue, alpha: color.alpha });
};
const AnimatedIcon = new Lang.Class({
Name: 'AnimatedIcon',
_init: function(name, size) {
this.actor = new St.Bin({ visible: false });
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
this.actor.connect('notify::visible', Lang.bind(this, this._onVisibleNotify));
this._timeoutId = 0;
this._frame = 0;
this._animations = St.TextureCache.get_default().load_sliced_image (global.datadir + '/theme/' + name, size, size);
this.actor.set_child(this._animations);
},
_disconnectTimeout: function() {
if (this._timeoutId > 0) {
Mainloop.source_remove(this._timeoutId);
this._timeoutId = 0;
}
},
_onVisibleNotify: function() {
if (this.actor.visible)
this._timeoutId = Mainloop.timeout_add(ANIMATED_ICON_UPDATE_TIMEOUT, Lang.bind(this, this._update));
else
this._disconnectTimeout();
},
_showFrame: function(frame) {
let oldFrameActor = this._animations.get_child_at_index(this._frame);
if (oldFrameActor)
oldFrameActor.hide();
this._frame = (frame % this._animations.get_n_children());
let newFrameActor = this._animations.get_child_at_index(this._frame);
if (newFrameActor)
newFrameActor.show();
},
_update: function() {
this._showFrame(this._frame + 1);
return true;
},
_onDestroy: function() {
this._disconnectTimeout();
}
});
const TextShadower = new Lang.Class({
Name: 'TextShadower',
_init: function() {
this.actor = new Shell.GenericContainer();
this.actor.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
this.actor.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
this.actor.connect('allocate', Lang.bind(this, this._allocate));
this._label = new St.Label();
this.actor.add_actor(this._label);
for (let i = 0; i < 4; i++) {
let actor = new St.Label({ style_class: 'label-shadow' });
actor.clutter_text.ellipsize = Pango.EllipsizeMode.END;
this.actor.add_actor(actor);
}
this._label.raise_top();
},
setText: function(text) {
let children = this.actor.get_children();
for (let i = 0; i < children.length; i++)
children[i].set_text(text);
},
_getPreferredWidth: function(actor, forHeight, alloc) {
let [minWidth, natWidth] = this._label.get_preferred_width(forHeight);
alloc.min_size = minWidth + 2;
alloc.natural_size = natWidth + 2;
},
_getPreferredHeight: function(actor, forWidth, alloc) {
let [minHeight, natHeight] = this._label.get_preferred_height(forWidth);
alloc.min_size = minHeight + 2;
alloc.natural_size = natHeight + 2;
},
_allocate: function(actor, box, flags) {
let children = this.actor.get_children();
let availWidth = box.x2 - box.x1;
let availHeight = box.y2 - box.y1;
let [minChildWidth, minChildHeight, natChildWidth, natChildHeight] =
this._label.get_preferred_size();
let childWidth = Math.min(natChildWidth, availWidth - 2);
let childHeight = Math.min(natChildHeight, availHeight - 2);
for (let i = 0; i < children.length; i++) {
let child = children[i];
let childBox = new Clutter.ActorBox();
// The order of the labels here is arbitrary, except
// we know the "real" label is at the end because Clutter.Group
// sorts by Z order
switch (i) {
case 0: // top
childBox.x1 = 1;
childBox.y1 = 0;
break;
case 1: // right
childBox.x1 = 2;
childBox.y1 = 1;
break;
case 2: // bottom
childBox.x1 = 1;
childBox.y1 = 2;
break;
case 3: // left
childBox.x1 = 0;
childBox.y1 = 1;
break;
case 4: // center
childBox.x1 = 1;
childBox.y1 = 1;
break;
}
childBox.x2 = childBox.x1 + childWidth;
childBox.y2 = childBox.y1 + childHeight;
child.allocate(childBox, flags);
}
}
});
/**
* AppMenuButton:
*
* This class manages the "application menu" component. It tracks the
* currently focused application. However, when an app is launched,
* this menu also handles startup notification for it. So when we
* have an active startup notification, we switch modes to display that.
*/
const AppMenuButton = new Lang.Class({
Name: 'AppMenuButton',
Extends: PanelMenu.Button,
_init: function(menuManager) {
this.parent(0.0, null, true);
this.actor.accessible_role = Atk.Role.MENU;
this._startingApps = [];
this._menuManager = menuManager;
this._targetApp = null;
this._appMenuNotifyId = 0;
this._actionGroupNotifyId = 0;
let bin = new St.Bin({ name: 'appMenu' });
this.actor.add_actor(bin);
this.actor.bind_property("reactive", this.actor, "can-focus", 0);
this.actor.reactive = false;
this._targetIsCurrent = false;
this._container = new Shell.GenericContainer();
bin.set_child(this._container);
this._container.connect('get-preferred-width', Lang.bind(this, this._getContentPreferredWidth));
this._container.connect('get-preferred-height', Lang.bind(this, this._getContentPreferredHeight));
this._container.connect('allocate', Lang.bind(this, this._contentAllocate));
this._iconBox = new Shell.Slicer({ name: 'appMenuIcon' });
this._iconBox.connect('style-changed',
Lang.bind(this, this._onIconBoxStyleChanged));
this._iconBox.connect('notify::allocation',
Lang.bind(this, this._updateIconBoxClip));
this._container.add_actor(this._iconBox);
this._label = new TextShadower();
this._container.add_actor(this._label.actor);
this._iconBottomClip = 0;
this._visible = !Main.overview.visible;
if (!this._visible)
this.actor.hide();
Main.overview.connect('hiding', Lang.bind(this, function () {
this.show();
}));
Main.overview.connect('showing', Lang.bind(this, function () {
this.hide();
}));
this._stop = true;
this._spinner = new AnimatedIcon('process-working.svg',
PANEL_ICON_SIZE);
this._container.add_actor(this._spinner.actor);
this._spinner.actor.lower_bottom();
let tracker = Shell.WindowTracker.get_default();
let appSys = Shell.AppSystem.get_default();
tracker.connect('notify::focus-app', Lang.bind(this, this._focusAppChanged));
appSys.connect('app-state-changed', Lang.bind(this, this._onAppStateChanged));
global.window_manager.connect('switch-workspace', Lang.bind(this, this._sync));
this._sync();
},
show: function() {
if (this._visible)
return;
this._visible = true;
this.actor.show();
if (!this._targetIsCurrent)
return;
this.actor.reactive = true;
Tweener.removeTweens(this.actor);
Tweener.addTween(this.actor,
{ opacity: 255,
time: Overview.ANIMATION_TIME,
transition: 'easeOutQuad' });
},
hide: function() {
if (!this._visible)
return;
this._visible = false;
this.actor.reactive = false;
if (!this._targetIsCurrent) {
this.actor.hide();
return;
}
Tweener.removeTweens(this.actor);
Tweener.addTween(this.actor,
{ opacity: 0,
time: Overview.ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: function() {
this.actor.hide();
},
onCompleteScope: this });
},
_onIconBoxStyleChanged: function() {
let node = this._iconBox.get_theme_node();
this._iconBottomClip = node.get_length('app-icon-bottom-clip');
this._updateIconBoxClip();
},
_updateIconBoxClip: function() {
let allocation = this._iconBox.allocation;
if (this._iconBottomClip > 0)
this._iconBox.set_clip(0, 0,
allocation.x2 - allocation.x1,
allocation.y2 - allocation.y1 - this._iconBottomClip);
else
this._iconBox.remove_clip();
},
stopAnimation: function() {
if (this._stop)
return;
this._stop = true;
this.actor.reactive = true;
Tweener.addTween(this._spinner.actor,
{ opacity: 0,
time: SPINNER_ANIMATION_TIME,
transition: "easeOutQuad",
onCompleteScope: this,
onComplete: function() {
this._spinner.actor.opacity = 255;
this._spinner.actor.hide();
}
});
},
startAnimation: function() {
this._stop = false;
this.actor.reactive = false;
this._spinner.actor.show();
},
_getContentPreferredWidth: function(actor, forHeight, alloc) {
let [minSize, naturalSize] = this._iconBox.get_preferred_width(forHeight);
alloc.min_size = minSize;
alloc.natural_size = naturalSize;
[minSize, naturalSize] = this._label.actor.get_preferred_width(forHeight);
alloc.min_size = alloc.min_size + Math.max(0, minSize - Math.floor(alloc.min_size / 2));
alloc.natural_size = alloc.natural_size + Math.max(0, naturalSize - Math.floor(alloc.natural_size / 2));
},
_getContentPreferredHeight: function(actor, forWidth, alloc) {
let [minSize, naturalSize] = this._iconBox.get_preferred_height(forWidth);
alloc.min_size = minSize;
alloc.natural_size = naturalSize;
[minSize, naturalSize] = this._label.actor.get_preferred_height(forWidth);
if (minSize > alloc.min_size)
alloc.min_size = minSize;
if (naturalSize > alloc.natural_size)
alloc.natural_size = naturalSize;
},
_contentAllocate: function(actor, box, flags) {
let allocWidth = box.x2 - box.x1;
let allocHeight = box.y2 - box.y1;
let childBox = new Clutter.ActorBox();
let [minWidth, minHeight, naturalWidth, naturalHeight] = this._iconBox.get_preferred_size();
let direction = this.actor.get_text_direction();
let yPadding = Math.floor(Math.max(0, allocHeight - naturalHeight) / 2);
childBox.y1 = yPadding;
childBox.y2 = childBox.y1 + Math.min(naturalHeight, allocHeight);
if (direction == Clutter.TextDirection.LTR) {
childBox.x1 = 0;
childBox.x2 = childBox.x1 + Math.min(naturalWidth, allocWidth);
} else {
childBox.x1 = Math.max(0, allocWidth - naturalWidth);
childBox.x2 = allocWidth;
}
this._iconBox.allocate(childBox, flags);
let iconWidth = childBox.x2 - childBox.x1;
[minWidth, minHeight, naturalWidth, naturalHeight] = this._label.actor.get_preferred_size();
yPadding = Math.floor(Math.max(0, allocHeight - naturalHeight) / 2);
childBox.y1 = yPadding;
childBox.y2 = childBox.y1 + Math.min(naturalHeight, allocHeight);
if (direction == Clutter.TextDirection.LTR) {
childBox.x1 = Math.floor(iconWidth / 2);
childBox.x2 = Math.min(childBox.x1 + naturalWidth, allocWidth);
} else {
childBox.x2 = allocWidth - Math.floor(iconWidth / 2);
childBox.x1 = Math.max(0, childBox.x2 - naturalWidth);
}
this._label.actor.allocate(childBox, flags);
if (direction == Clutter.TextDirection.LTR) {
childBox.x1 = Math.floor(iconWidth / 2) + this._label.actor.width;
childBox.x2 = childBox.x1 + this._spinner.actor.width;
childBox.y1 = box.y1;
childBox.y2 = box.y2 - 1;
this._spinner.actor.allocate(childBox, flags);
} else {
childBox.x1 = -this._spinner.actor.width;
childBox.x2 = childBox.x1 + this._spinner.actor.width;
childBox.y1 = box.y1;
childBox.y2 = box.y2 - 1;
this._spinner.actor.allocate(childBox, flags);
}
},
_onAppStateChanged: function(appSys, app) {
let state = app.state;
if (state != Shell.AppState.STARTING) {
this._startingApps = this._startingApps.filter(function(a) {
return a != app;
});
} else if (state == Shell.AppState.STARTING) {
this._startingApps.push(app);
}
// For now just resync on all running state changes; this is mainly to handle
// cases where the focused window's application changes without the focus
// changing. An example case is how we map OpenOffice.org based on the window
// title which is a dynamic property.
this._sync();
},
_focusAppChanged: function() {
let tracker = Shell.WindowTracker.get_default();
let focusedApp = tracker.focus_app;
if (!focusedApp) {
// If the app has just lost focus to the panel, pretend
// nothing happened; otherwise you can't keynav to the
// app menu.
if (global.stage_input_mode == Shell.StageInputMode.FOCUSED)
return;
}
this._sync();
},
setLockedState: function(locked) {
if (locked)
this.hide();
else
this._sync();
},
_sync: function() {
let tracker = Shell.WindowTracker.get_default();
let focusedApp = tracker.focus_app;
let lastStartedApp = null;
let workspace = global.screen.get_active_workspace();
for (let i = 0; i < this._startingApps.length; i++)
if (this._startingApps[i].is_on_workspace(workspace))
lastStartedApp = this._startingApps[i];
let targetApp = focusedApp != null ? focusedApp : lastStartedApp;
if (targetApp == null) {
if (!this._targetIsCurrent)
return;
this.actor.reactive = false;
this._targetIsCurrent = false;
Tweener.removeTweens(this.actor);
Tweener.addTween(this.actor, { opacity: 0,
time: Overview.ANIMATION_TIME,
transition: 'easeOutQuad' });
return;
}
if (!targetApp.is_on_workspace(workspace))
return;
if (!this._targetIsCurrent) {
this.actor.reactive = true;
this._targetIsCurrent = true;
Tweener.removeTweens(this.actor);
Tweener.addTween(this.actor, { opacity: 255,
time: Overview.ANIMATION_TIME,
transition: 'easeOutQuad' });
}
if (targetApp == this._targetApp) {
if (targetApp && targetApp.get_state() != Shell.AppState.STARTING) {
this.stopAnimation();
this._maybeSetMenu();
}
return;
}
this._spinner.actor.hide();
if (this._iconBox.child != null)
this._iconBox.child.destroy();
this._iconBox.hide();
this._label.setText('');
if (this._appMenuNotifyId)
this._targetApp.disconnect(this._appMenuNotifyId);
if (this._actionGroupNotifyId)
this._targetApp.disconnect(this._actionGroupNotifyId);
if (targetApp) {
this._appMenuNotifyId = targetApp.connect('notify::menu', Lang.bind(this, this._sync));
this._actionGroupNotifyId = targetApp.connect('notify::action-group', Lang.bind(this, this._sync));
} else {
this._appMenuNotifyId = 0;
this._actionGroupNotifyId = 0;
}
this._targetApp = targetApp;
let icon = targetApp.get_faded_icon(2 * PANEL_ICON_SIZE);
this._label.setText(targetApp.get_name());
this.setName(targetApp.get_name());
this._iconBox.set_child(icon);
this._iconBox.show();
if (targetApp.get_state() == Shell.AppState.STARTING)
this.startAnimation();
else
this._maybeSetMenu();
this.emit('changed');
},
_maybeSetMenu: function() {
let menu;
if (this._targetApp.action_group && this._targetApp.menu) {
if (this.menu instanceof PopupMenu.RemoteMenu &&
this.menu.actionGroup == this._targetApp.action_group)
return;
menu = new PopupMenu.RemoteMenu(this.actor, this._targetApp.menu, this._targetApp.action_group);
} else {
if (this.menu && !(this.menu instanceof PopupMenu.RemoteMenu))
return;
// fallback to older menu
menu = new PopupMenu.PopupMenu(this.actor, 0.0, St.Side.TOP, 0);
menu.addAction(_("Quit"), Lang.bind(this, function() {
this._targetApp.request_quit();
}));
}
this.setMenu(menu);
this._menuManager.addMenu(menu);
}
});
Signals.addSignalMethods(AppMenuButton.prototype);
// Activities button. Because everything else in the top bar is a
// PanelMenu.Button, it simplifies some things to make this be one too.
// We just hack it up to not actually have a menu attached to it.
const ActivitiesButton = new Lang.Class({
Name: 'ActivitiesButton',
Extends: PanelMenu.Button,
_init: function() {
this.parent(0.0);
this.actor.accessible_role = Atk.Role.TOGGLE_BUTTON;
let container = new Shell.GenericContainer();
container.connect('get-preferred-width', Lang.bind(this, this._containerGetPreferredWidth));
container.connect('get-preferred-height', Lang.bind(this, this._containerGetPreferredHeight));
container.connect('allocate', Lang.bind(this, this._containerAllocate));
this.actor.add_actor(container);
this.actor.name = 'panelActivities';
/* Translators: If there is no suitable word for "Activities"
in your language, you can use the word for "Overview". */
this._label = new St.Label({ text: _("Activities") });
container.add_actor(this._label);
this.actor.label_actor = this._label;
this._hotCorner = new Layout.HotCorner();
container.add_actor(this._hotCorner.actor);
// Hack up our menu...
this.menu.open = Lang.bind(this, this._onMenuOpenRequest);
this.menu.close = Lang.bind(this, this._onMenuCloseRequest);
this.menu.toggle = Lang.bind(this, this._onMenuToggleRequest);
this.actor.connect('captured-event', Lang.bind(this, this._onCapturedEvent));
this.actor.connect_after('button-release-event', Lang.bind(this, this._onButtonRelease));
this.actor.connect_after('key-release-event', Lang.bind(this, this._onKeyRelease));
Main.overview.connect('showing', Lang.bind(this, function() {
this.actor.add_style_pseudo_class('overview');
this._escapeMenuGrab();
this.actor.add_accessible_state (Atk.StateType.CHECKED);
}));
Main.overview.connect('hiding', Lang.bind(this, function() {
this.actor.remove_style_pseudo_class('overview');
this._escapeMenuGrab();
this.actor.remove_accessible_state (Atk.StateType.CHECKED);
}));
this._xdndTimeOut = 0;
},
_containerGetPreferredWidth: function(actor, forHeight, alloc) {
[alloc.min_size, alloc.natural_size] = this._label.get_preferred_width(forHeight);
},
_containerGetPreferredHeight: function(actor, forWidth, alloc) {
[alloc.min_size, alloc.natural_size] = this._label.get_preferred_height(forWidth);
},
_containerAllocate: function(actor, box, flags) {
this._label.allocate(box, flags);
// The hot corner needs to be outside any padding/alignment
// that has been imposed on us
let primary = Main.layoutManager.primaryMonitor;
let hotBox = new Clutter.ActorBox();
let ok, x, y;
if (actor.get_text_direction() == Clutter.TextDirection.LTR) {
[ok, x, y] = actor.transform_stage_point(primary.x, primary.y)
} else {
[ok, x, y] = actor.transform_stage_point(primary.x + primary.width, primary.y);
// hotCorner.actor has northeast gravity, so we don't need
// to adjust x for its width
}
hotBox.x1 = Math.round(x);
hotBox.x2 = hotBox.x1 + this._hotCorner.actor.width;
hotBox.y1 = Math.round(y);
hotBox.y2 = hotBox.y1 + this._hotCorner.actor.height;
this._hotCorner.actor.allocate(hotBox, flags);
},
handleDragOver: function(source, actor, x, y, time) {
if (source != Main.xdndHandler)
return DND.DragMotionResult.CONTINUE;
if (this._xdndTimeOut != 0)
Mainloop.source_remove(this._xdndTimeOut);
this._xdndTimeOut = Mainloop.timeout_add(BUTTON_DND_ACTIVATION_TIMEOUT,
Lang.bind(this, this._xdndShowOverview, actor));
return DND.DragMotionResult.CONTINUE;
},
_escapeMenuGrab: function() {
if (this.menu.isOpen)
this.menu.close();
},
_onCapturedEvent: function(actor, event) {
if (event.type() == Clutter.EventType.BUTTON_PRESS) {
if (!this._hotCorner.shouldToggleOverviewOnClick())
return true;
}
return false;
},
_onMenuOpenRequest: function() {
this.menu.isOpen = true;
this.menu.emit('open-state-changed', true);
},
_onMenuCloseRequest: function() {
this.menu.isOpen = false;
this.menu.emit('open-state-changed', false);
},
_onMenuToggleRequest: function() {
this.menu.isOpen = !this.menu.isOpen;
this.menu.emit('open-state-changed', this.menu.isOpen);
},
_onButtonRelease: function() {
if (this.menu.isOpen) {
this.menu.close();
Main.overview.toggle();
}
},
_onKeyRelease: function(actor, event) {
let symbol = event.get_key_symbol();
if (symbol == Clutter.KEY_Return || symbol == Clutter.KEY_space) {
if (this.menu.isOpen)
this.menu.close();
Main.overview.toggle();
}
},
_xdndShowOverview: function(actor) {
let [x, y, mask] = global.get_pointer();
let pickedActor = global.stage.get_actor_at_pos(Clutter.PickMode.REACTIVE, x, y);
if (pickedActor == this.actor) {
if (!Main.overview.visible && !Main.overview.animationInProgress) {
Main.overview.showTemporarily();
Main.overview.beginItemDrag(actor);
}
}
Mainloop.source_remove(this._xdndTimeOut);
this._xdndTimeOut = 0;
}
});
const PanelCorner = new Lang.Class({
Name: 'PanelCorner',
_init: function(box, side) {
this._side = side;
this._box = box;
this._box.connect('style-changed', Lang.bind(this, this._boxStyleChanged));
this.actor = new St.DrawingArea({ style_class: 'panel-corner' });
this.actor.connect('style-changed', Lang.bind(this, this._styleChanged));
this.actor.connect('repaint', Lang.bind(this, this._repaint));
},
_findRightmostButton: function(container) {
if (!container.get_children)
return null;
let children = container.get_children();
if (!children || children.length == 0)
return null;
// Start at the back and work backward
let index;
for (index = children.length - 1; index >= 0; index--) {
if (children[index].visible)
break;
}
if (index < 0)
return null;
if (!(children[index].has_style_class_name('panel-menu')) &&
!(children[index].has_style_class_name('panel-button')))
return this._findRightmostButton(children[index]);
return children[index];
},
_findLeftmostButton: function(container) {
if (!container.get_children)
return null;
let children = container.get_children();
if (!children || children.length == 0)
return null;
// Start at the front and work forward
let index;
for (index = 0; index < children.length; index++) {
if (children[index].visible)
break;
}
if (index == children.length)
return null;
if (!(children[index].has_style_class_name('panel-menu')) &&
!(children[index].has_style_class_name('panel-button')))
return this._findLeftmostButton(children[index]);
return children[index];
},
_boxStyleChanged: function() {
let side = this._side;
let rtlAwareContainer = this._box instanceof St.BoxLayout;
if (rtlAwareContainer &&
this._box.get_text_direction() == Clutter.TextDirection.RTL) {
if (this._side == St.Side.LEFT)
side = St.Side.RIGHT;
else if (this._side == St.Side.RIGHT)
side = St.Side.LEFT;
}
let button;
if (side == St.Side.LEFT)
button = this._findLeftmostButton(this._box);
else if (side == St.Side.RIGHT)
button = this._findRightmostButton(this._box);
if (button) {
if (this._button && this._buttonStyleChangedSignalId) {
this._button.disconnect(this._buttonStyleChangedSignalId);
this._button.style = null;
}
this._button = button;
button.connect('destroy', Lang.bind(this,
function() {
if (this._button == button) {
this._button = null;
this._buttonStyleChangedSignalId = 0;
}
}));
// Synchronize the locate button's pseudo classes with this corner
this._buttonStyleChangedSignalId = button.connect('style-changed', Lang.bind(this,
function(actor) {
let pseudoClass = button.get_style_pseudo_class();
this.actor.set_style_pseudo_class(pseudoClass);
}));
// The corner doesn't support theme transitions, so override
// the .panel-button default
button.style = 'transition-duration: 0';
}
},
_repaint: function() {
let node = this.actor.get_theme_node();
let cornerRadius = node.get_length("-panel-corner-radius");
let borderWidth = node.get_length('-panel-corner-border-width');
let backgroundColor = node.get_color('-panel-corner-background-color');
let borderColor = node.get_color('-panel-corner-border-color');
let cr = this.actor.get_context();
cr.setOperator(Cairo.Operator.SOURCE);
cr.moveTo(0, 0);
if (this._side == St.Side.LEFT)
cr.arc(cornerRadius,
borderWidth + cornerRadius,
cornerRadius, Math.PI, 3 * Math.PI / 2);
else
cr.arc(0,
borderWidth + cornerRadius,
cornerRadius, 3 * Math.PI / 2, 2 * Math.PI);
cr.lineTo(cornerRadius, 0);
cr.closePath();
let savedPath = cr.copyPath();
let xOffsetDirection = this._side == St.Side.LEFT ? -1 : 1;
let over = _over(borderColor, backgroundColor);
Clutter.cairo_set_source_color(cr, over);
cr.fill();
let offset = borderWidth;
Clutter.cairo_set_source_color(cr, backgroundColor);
cr.save();
cr.translate(xOffsetDirection * offset, - offset);
cr.appendPath(savedPath);
cr.fill();
cr.restore();
},
_styleChanged: function() {
let node = this.actor.get_theme_node();
let cornerRadius = node.get_length("-panel-corner-radius");
let borderWidth = node.get_length('-panel-corner-border-width');
this.actor.set_size(cornerRadius, borderWidth + cornerRadius);
this.actor.set_anchor_point(0, borderWidth);
}
});
const Panel = new Lang.Class({
Name: 'Panel',
_init : function() {
this.actor = new Shell.GenericContainer({ name: 'panel',
reactive: true });
this.actor._delegate = this;
this._statusArea = {};
Main.overview.connect('shown', Lang.bind(this, function () {
this.actor.add_style_class_name('in-overview');
}));
Main.overview.connect('hiding', Lang.bind(this, function () {
this.actor.remove_style_class_name('in-overview');
}));
Main.screenShield.connect('lock-status-changed', Lang.bind(this, this._onLockStateChanged));
this._menus = new PopupMenu.PopupMenuManager(this);
this._leftBox = new St.BoxLayout({ name: 'panelLeft' });
this.actor.add_actor(this._leftBox);
this._centerBox = new St.BoxLayout({ name: 'panelCenter' });
this.actor.add_actor(this._centerBox);
this._rightBox = new St.BoxLayout({ name: 'panelRight' });
this.actor.add_actor(this._rightBox);
if (this.actor.get_text_direction() == Clutter.TextDirection.RTL)
this._leftCorner = new PanelCorner(this._rightBox, St.Side.LEFT);
else
this._leftCorner = new PanelCorner(this._leftBox, St.Side.LEFT);
this.actor.add_actor(this._leftCorner.actor);
if (this.actor.get_text_direction() == Clutter.TextDirection.RTL)
this._rightCorner = new PanelCorner(this._leftBox, St.Side.RIGHT);
else
this._rightCorner = new PanelCorner(this._rightBox, St.Side.RIGHT);
this.actor.add_actor(this._rightCorner.actor);
this.actor.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
this.actor.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
this.actor.connect('allocate', Lang.bind(this, this._allocate));
this.actor.connect('button-press-event', Lang.bind(this, this._onButtonPress));
/* Button on the left side of the panel. */
if (Main.sessionMode.hasOverview) {
this._activitiesButton = new ActivitiesButton();
this._activities = this._activitiesButton.actor;
this._leftBox.add(this._activities);
// The activities button has a pretend menu, so as to integrate
// more cleanly with the rest of the panel
this._menus.addMenu(this._activitiesButton.menu);
}
if (Main.sessionMode.hasAppMenu) {
this._appMenu = new AppMenuButton(this._menus);
this._leftBox.add(this._appMenu.actor);
}
/* center */
this._dateMenu = new DateMenu.DateMenuButton();
this._centerBox.add(this._dateMenu.actor, { y_fill: true });
this._menus.addMenu(this._dateMenu.menu);
/* right */
Main.statusIconDispatcher.connect('status-icon-added', Lang.bind(this, this._onTrayIconAdded));
Main.statusIconDispatcher.connect('status-icon-removed', Lang.bind(this, this._onTrayIconRemoved));
Main.layoutManager.panelBox.add(this.actor);
Main.ctrlAltTabManager.addGroup(this.actor, _("Top Bar"), 'start-here',
{ sortGroup: CtrlAltTab.SortGroup.TOP });
},
_getPreferredWidth: function(actor, forHeight, alloc) {
alloc.min_size = -1;
alloc.natural_size = Main.layoutManager.primaryMonitor.width;
},
_getPreferredHeight: function(actor, forWidth, alloc) {
// We don't need to implement this; it's forced by the CSS
alloc.min_size = -1;
alloc.natural_size = -1;
},
_allocate: function(actor, box, flags) {
let allocWidth = box.x2 - box.x1;
let allocHeight = box.y2 - box.y1;
let [leftMinWidth, leftNaturalWidth] = this._leftBox.get_preferred_width(-1);
let [centerMinWidth, centerNaturalWidth] = this._centerBox.get_preferred_width(-1);
let [rightMinWidth, rightNaturalWidth] = this._rightBox.get_preferred_width(-1);
let sideWidth, centerWidth;
centerWidth = centerNaturalWidth;
sideWidth = (allocWidth - centerWidth) / 2;
let childBox = new Clutter.ActorBox();
childBox.y1 = 0;
childBox.y2 = allocHeight;
if (this.actor.get_text_direction() == Clutter.TextDirection.RTL) {
childBox.x1 = allocWidth - Math.min(Math.floor(sideWidth),
leftNaturalWidth);
childBox.x2 = allocWidth;
} else {
childBox.x1 = 0;
childBox.x2 = Math.min(Math.floor(sideWidth),
leftNaturalWidth);
}
this._leftBox.allocate(childBox, flags);
childBox.x1 = Math.ceil(sideWidth);
childBox.y1 = 0;
childBox.x2 = childBox.x1 + centerWidth;
childBox.y2 = allocHeight;
this._centerBox.allocate(childBox, flags);
childBox.y1 = 0;
childBox.y2 = allocHeight;
if (this.actor.get_text_direction() == Clutter.TextDirection.RTL) {
childBox.x1 = 0;
childBox.x2 = Math.min(Math.floor(sideWidth),
rightNaturalWidth);
} else {
childBox.x1 = allocWidth - Math.min(Math.floor(sideWidth),
rightNaturalWidth);
childBox.x2 = allocWidth;
}
this._rightBox.allocate(childBox, flags);
let [cornerMinWidth, cornerWidth] = this._leftCorner.actor.get_preferred_width(-1);
let [cornerMinHeight, cornerHeight] = this._leftCorner.actor.get_preferred_width(-1);
childBox.x1 = 0;
childBox.x2 = cornerWidth;
childBox.y1 = allocHeight;
childBox.y2 = allocHeight + cornerHeight;
this._leftCorner.actor.allocate(childBox, flags);
let [cornerMinWidth, cornerWidth] = this._rightCorner.actor.get_preferred_width(-1);
let [cornerMinHeight, cornerHeight] = this._rightCorner.actor.get_preferred_width(-1);
childBox.x1 = allocWidth - cornerWidth;
childBox.x2 = allocWidth;
childBox.y1 = allocHeight;
childBox.y2 = allocHeight + cornerHeight;
this._rightCorner.actor.allocate(childBox, flags);
},
_onButtonPress: function(actor, event) {
if (event.get_source() != actor)
return false;
let button = event.get_button();
if (button != 1)
return false;
let focusWindow = global.display.focus_window;
if (!focusWindow)
return false;
let dragWindow = focusWindow.is_attached_dialog() ? focusWindow.get_transient_for()
: focusWindow;
if (!dragWindow)
return false;
let rect = dragWindow.get_outer_rect();
let [stageX, stageY] = event.get_coords();
let allowDrag = dragWindow.maximized_vertically &&
stageX > rect.x && stageX < rect.x + rect.width;
if (!allowDrag)
return false;
global.display.begin_grab_op(global.screen,
dragWindow,
Meta.GrabOp.MOVING,
false, /* pointer grab */
true, /* frame action */
button,
event.get_state(),
event.get_time(),
stageX, stageY);
return true;
},
openAppMenu: function() {
let menu = this._appMenu.menu;
if (!this._appMenu.actor.reactive || menu.isOpen)
return;
menu.open();
menu.actor.navigate_focus(null, Gtk.DirectionType.TAB_FORWARD, false);
},
startStatusArea: function() {
for (let i = 0; i < Main.sessionMode.statusArea.order.length; i++) {
let role = Main.sessionMode.statusArea.order[i];
let constructor = Main.sessionMode.statusArea.implementation[role];
if (!constructor) {
// This icon is not implemented (this is a bug)
continue;
}
let indicator = new constructor();
this.addToStatusArea(role, indicator, i);
}
},
_insertStatusItem: function(actor, position) {
let children = this._rightBox.get_children();
let i;
for (i = children.length - 1; i >= 0; i--) {
let rolePosition = children[i]._rolePosition;
if (position > rolePosition) {
this._rightBox.insert_child_at_index(actor, i + 1);
break;
}
}
if (i == -1) {
// If we didn't find a position, we must be first
this._rightBox.insert_child_at_index(actor, 0);
}
actor._rolePosition = position;
},
addToStatusArea: function(role, indicator, position) {
if (this._statusArea[role])
throw new Error('Extension point conflict: there is already a status indicator for role ' + role);
if (!(indicator instanceof PanelMenu.Button))
throw new TypeError('Status indicator must be an instance of PanelMenu.Button');
if (!position)
position = 0;
this._insertStatusItem(indicator.actor, position);
if (indicator.menu)
this._menus.addMenu(indicator.menu);
this._statusArea[role] = indicator;
let destroyId = indicator.connect('destroy', Lang.bind(this, function(emitter) {
delete this._statusArea[role];
emitter.disconnect(destroyId);
}));
return indicator;
},
_onTrayIconAdded: function(o, icon, role) {
if (Main.sessionMode.statusArea.implementation[role]) {
// This icon is legacy, and replaced by a Shell version
// Hide it
return;
}
if (Main.sessionMode.statusArea.order.indexOf(role) == -1)
return;
icon.height = PANEL_ICON_SIZE;
let buttonBox = new PanelMenu.ButtonBox();
let box = buttonBox.actor;
box.add_actor(icon);
this._insertStatusItem(box, Main.sessionMode.statusArea.order.indexOf(role));
},
_onTrayIconRemoved: function(o, icon) {
let box = icon.get_parent();
if (box && box._delegate instanceof PanelMenu.ButtonBox)
box.destroy();
},
_onLockStateChanged: function(shield, locked) {
if (this._activitiesButton)
this._activitiesButton.setLockedState(locked);
if (this._appMenu)
this._appMenu.setLockedState(locked);
if (this._dateMenu)
this._dateMenu.setLockedState(locked);
for (let id in this._statusArea)
this._statusArea[id].setLockedState(locked);
},
});
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