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gnome-shell/js/ui/panel.js
Jasper St. Pierre 15f881f967 st: Remove custom text direction stuff 
Clutter has its own built-in system for managing text directions, like GTK+.
Convert over to use this.

https://bugzilla.gnome.org/show_bug.cgi?id=670034
2012-02-28 08:14:06 -05:00

1134 lines
40 KiB
JavaScript
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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 Lang = imports.lang;
const Mainloop = imports.mainloop;
const Pango = imports.gi.Pango;
const Shell = imports.gi.Shell;
const St = imports.gi.St;
const Signals = imports.signals;
const Config = imports.misc.config;
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;
const STANDARD_STATUS_AREA_ORDER = ['a11y', 'keyboard', 'volume', 'bluetooth', 'network', 'battery', 'userMenu'];
const STANDARD_STATUS_AREA_SHELL_IMPLEMENTATION = {
'a11y': imports.ui.status.accessibility.ATIndicator,
'volume': imports.ui.status.volume.Indicator,
'battery': imports.ui.status.power.Indicator,
'keyboard': imports.ui.status.keyboard.XKBIndicator,
'userMenu': imports.ui.userMenu.UserMenuButton
};
if (Config.HAVE_BLUETOOTH)
STANDARD_STATUS_AREA_SHELL_IMPLEMENTATION['bluetooth'] = imports.ui.status.bluetooth.Indicator;
try {
STANDARD_STATUS_AREA_SHELL_IMPLEMENTATION['network'] = imports.ui.status.network.NMApplet;
} catch(e) {
log('NMApplet is not supported. It is possible that your NetworkManager version is too old');
}
const GDM_STATUS_AREA_ORDER = ['a11y', 'display', 'keyboard', 'volume', 'battery', 'powerMenu'];
const GDM_STATUS_AREA_SHELL_IMPLEMENTATION = {
'a11y': imports.ui.status.accessibility.ATIndicator,
'volume': imports.ui.status.volume.Indicator,
'battery': imports.ui.status.power.Indicator,
'keyboard': imports.ui.status.keyboard.XKBIndicator,
'powerMenu': imports.gdm.powerMenu.PowerMenuButton
};
// 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._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._sync));
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();
this.actor.reactive = true;
if (!this._targetIsCurrent)
return;
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;
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._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();
},
_sync: function() {
let tracker = Shell.WindowTracker.get_default();
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 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;
}
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);
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._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();
}));
Main.overview.connect('hiding', Lang.bind(this, function() {
this.actor.remove_style_pseudo_class('overview');
this._escapeMenuGrab();
}));
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 = children.length - 1;
while (!children[index].visible && index >= 0)
index--;
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 = 0;
while (!children[index].visible && index < children.length)
index++;
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');
}));
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));
/* Button on the left side of the panel. */
if (global.session_type == Shell.SessionType.USER) {
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);
this._appMenu = new AppMenuButton(this._menus);
this._leftBox.add(this._appMenu.actor);
}
/* center */
if (global.session_type == Shell.SessionType.USER)
this._dateMenu = new DateMenu.DateMenuButton({ showEvents: true });
else
this._dateMenu = new DateMenu.DateMenuButton({ showEvents: false });
this._centerBox.add(this._dateMenu.actor, { y_fill: true });
this._menus.addMenu(this._dateMenu.menu);
/* right */
if (global.session_type == Shell.SessionType.GDM) {
this._status_area_order = GDM_STATUS_AREA_ORDER;
this._status_area_shell_implementation = GDM_STATUS_AREA_SHELL_IMPLEMENTATION;
} else {
this._status_area_order = STANDARD_STATUS_AREA_ORDER;
this._status_area_shell_implementation = STANDARD_STATUS_AREA_SHELL_IMPLEMENTATION;
}
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);
},
startStatusArea: function() {
for (let i = 0; i < this._status_area_order.length; i++) {
let role = this._status_area_order[i];
let constructor = this._status_area_shell_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);
this._menus.addMenu(indicator.menu);
this._statusArea[role] = indicator;
let destroyId = indicator.connect('destroy', Lang.bind(this, function(emitter) {
this._statusArea[role] = null;
emitter.disconnect(destroyId);
}));
return indicator;
},
_onTrayIconAdded: function(o, icon, role) {
if (this._status_area_shell_implementation[role]) {
// This icon is legacy, and replaced by a Shell version
// Hide it
return;
}
icon.height = PANEL_ICON_SIZE;
let buttonBox = new PanelMenu.ButtonBox();
let box = buttonBox.actor;
box.add_actor(icon);
this._insertStatusItem(box, this._status_area_order.indexOf(role));
},
_onTrayIconRemoved: function(o, icon) {
let box = icon.get_parent();
if (box && box._delegate instanceof PanelMenu.ButtonBox)
box.destroy();
},
});
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