gnome-shell/js/ui/panel.js
Jasper St. Pierre 93dc7a51c0 Rework window / actor focus handling
The duality of the Clutter's key focus and mutter's window focus has long been
a problem for us in lots of case, and caused us to create large and complicated
hacks to get around the issue, including GrabHelper's focus grab model.

Instead of doing this, tie basic focus management into the core of gnome-shell,
instead of requiring complex "application-level" management to get it done
right.

Do this by making sure that only one of an actor or window can be focused at
the same time, and apply the appropriate logic to drop one or the other,
reactively.

Modals are considered a special case, as we grab all keyboard events, but at
the X level, the client window still has focus. Make sure to not do any input
synchronization when we have a modal.

At the same time, remove the FOCUSED input mode, as it's no longer necessary.

https://bugzilla.gnome.org/show_bug.cgi?id=700735
2013-07-08 17:05:16 -04:00

1180 lines
41 KiB
JavaScript

// -*- 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 Animation = imports.ui.animation;
const Config = imports.misc.config;
const CtrlAltTab = imports.ui.ctrlAltTab;
const DND = imports.ui.dnd;
const Overview = imports.ui.overview;
const PopupMenu = imports.ui.popupMenu;
const PanelMenu = imports.ui.panelMenu;
const RemoteMenu = imports.ui.remoteMenu;
const Main = imports.ui.main;
const Tweener = imports.ui.tweener;
const PANEL_ICON_SIZE = 24;
const BUTTON_DND_ACTIVATION_TIMEOUT = 250;
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 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.Actor
// 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(panel) {
this.parent(0.0, null, true);
this.actor.accessible_role = Atk.Role.MENU;
this._startingApps = [];
this._menuManager = panel.menuManager;
this._targetApp = null;
this._appMenuNotifyId = 0;
this._actionGroupNotifyId = 0;
let bin = new St.Bin({ name: 'appMenu' });
bin.connect('style-changed', Lang.bind(this, this._onStyleChanged));
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));
let textureCache = St.TextureCache.get_default();
textureCache.connect('icon-theme-changed',
Lang.bind(this, this._onIconThemeChanged));
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();
this._overviewHidingId = Main.overview.connect('hiding', Lang.bind(this, function () {
this.show();
}));
this._overviewShowingId = Main.overview.connect('showing', Lang.bind(this, function () {
this.hide();
}));
this._stop = true;
this._spinner = null;
let tracker = Shell.WindowTracker.get_default();
let appSys = Shell.AppSystem.get_default();
this._focusAppNotifyId =
tracker.connect('notify::focus-app', Lang.bind(this, this._focusAppChanged));
this._appStateChangedSignalId =
appSys.connect('app-state-changed', Lang.bind(this, this._onAppStateChanged));
this._switchWorkspaceNotifyId =
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 });
},
_onStyleChanged: function(actor) {
let node = actor.get_theme_node();
let [success, icon] = node.lookup_url('spinner-image', false);
if (!success || this._spinnerIcon == icon)
return;
this._spinnerIcon = icon;
this._spinner = new Animation.AnimatedIcon(this._spinnerIcon, PANEL_ICON_SIZE);
this._container.add_actor(this._spinner.actor);
this._spinner.actor.hide();
this._spinner.actor.lower_bottom();
},
_onIconBoxStyleChanged: function() {
let node = this._iconBox.get_theme_node();
this._iconBottomClip = node.get_length('app-icon-bottom-clip');
this._updateIconBoxClip();
},
_onIconThemeChanged: function() {
if (this._iconBox.child == null)
return;
this._iconBox.child.destroy();
let icon = this._targetApp.get_faded_icon(2 * PANEL_ICON_SIZE);
this._iconBox.set_child(icon);
},
_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;
if (this._spinner == null)
return;
Tweener.addTween(this._spinner.actor,
{ opacity: 0,
time: SPINNER_ANIMATION_TIME,
transition: "easeOutQuad",
onCompleteScope: this,
onComplete: function() {
this._spinner.stop();
this._spinner.actor.opacity = 255;
this._spinner.actor.hide();
}
});
},
startAnimation: function() {
this._stop = false;
this.actor.reactive = false;
if (this._spinner == null)
return;
this._spinner.play();
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 (this._spinner == null)
return;
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.key_focus != null)
return;
}
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 &&
targetApp.get_state() != Shell.AppState.BUSY) {
this.stopAnimation();
this._maybeSetMenu();
} else if (targetApp &&
targetApp.get_state() == Shell.AppState.BUSY) {
this.startAnimation();
}
return;
}
if (this._spinner)
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 ||
targetApp.get_state() == Shell.AppState.BUSY)
this.startAnimation();
else
this._maybeSetMenu();
this.emit('changed');
},
_maybeSetMenu: function() {
let menu;
if (this._targetApp.action_group && this._targetApp.menu) {
if (this.menu instanceof RemoteMenu.RemoteMenu &&
this.menu.actionGroup == this._targetApp.action_group)
return;
menu = new RemoteMenu.RemoteMenu(this.actor, this._targetApp.menu, this._targetApp.action_group);
menu.connect('activate', Lang.bind(this, function() {
let win = this._targetApp.get_windows()[0];
win.check_alive(global.get_current_time());
}));
} else {
if (this.menu.isDummyQuitMenu)
return;
// fallback to older menu
menu = new PopupMenu.PopupMenu(this.actor, 0.0, St.Side.TOP, 0);
menu.isDummyQuitMenu = true;
menu.addAction(_("Quit"), Lang.bind(this, function() {
this._targetApp.request_quit();
}));
}
this.setMenu(menu);
this._menuManager.addMenu(menu);
},
destroy: function() {
if (this._appStateChangedSignalId > 0) {
let appSys = Shell.AppSystem.get_default();
appSys.disconnect(this._appStateChangedSignalId);
this._appStateChangedSignalId = 0;
}
if (this._focusAppNotifyId > 0) {
let tracker = Shell.WindowTracker.get_default();
tracker.disconnect(this._focusAppNotifyId);
this._focusAppNotifyId = 0;
}
if (this._overviewHidingId > 0) {
Main.overview.disconnect(this._overviewHidingId);
this._overviewHidingId = 0;
}
if (this._overviewShowingId > 0) {
Main.overview.disconnect(this._overviewShowingId);
this._overviewShowingId = 0;
}
if (this._switchWorkspaceNotifyId > 0) {
global.window_manager.disconnect(this._switchWorkspaceNotifyId);
this._switchWorkspaceNotifyId = 0;
}
this.parent();
}
});
Signals.addSignalMethods(AppMenuButton.prototype);
const ActivitiesButton = new Lang.Class({
Name: 'ActivitiesButton',
Extends: PanelMenu.Button,
_init: function() {
this.parent(0.0, null, true);
this.actor.accessible_role = Atk.Role.TOGGLE_BUTTON;
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") });
this.actor.add_actor(this._label);
this.actor.label_actor = this._label;
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.actor.add_accessible_state (Atk.StateType.CHECKED);
}));
Main.overview.connect('hiding', Lang.bind(this, function() {
this.actor.remove_style_pseudo_class('overview');
this.actor.remove_accessible_state (Atk.StateType.CHECKED);
}));
this._xdndTimeOut = 0;
},
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._xdndToggleOverview, actor));
return DND.DragMotionResult.CONTINUE;
},
_onCapturedEvent: function(actor, event) {
if (event.type() == Clutter.EventType.BUTTON_PRESS) {
if (!Main.overview.shouldToggleByCornerOrButton())
return true;
}
return false;
},
_onButtonRelease: function() {
Main.overview.toggle();
},
_onKeyRelease: function(actor, event) {
let symbol = event.get_key_symbol();
if (symbol == Clutter.KEY_Return || symbol == Clutter.KEY_space) {
Main.overview.toggle();
}
},
_xdndToggleOverview: 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 && Main.overview.shouldToggleByCornerOrButton())
Main.overview.toggle();
Mainloop.source_remove(this._xdndTimeOut);
this._xdndTimeOut = 0;
}
});
const PanelCorner = new Lang.Class({
Name: 'PanelCorner',
_init: function(side) {
this._side = side;
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];
},
setStyleParent: function(box) {
let side = this._side;
let rtlAwareContainer = box instanceof St.BoxLayout;
if (rtlAwareContainer &&
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(box);
else if (side == St.Side.RIGHT)
button = this._findRightmostButton(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: 0ms';
}
},
_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 overlap = borderColor.alpha != 0;
let offsetY = overlap ? 0 : borderWidth;
let cr = this.actor.get_context();
cr.setOperator(Cairo.Operator.SOURCE);
cr.moveTo(0, offsetY);
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, offsetY);
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();
if (overlap) {
let offset = borderWidth;
Clutter.cairo_set_source_color(cr, backgroundColor);
cr.save();
cr.translate(xOffsetDirection * offset, - offset);
cr.appendPath(savedPath);
cr.fill();
cr.restore();
}
cr.$dispose();
},
_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_ITEM_IMPLEMENTATIONS = {
'activities': ActivitiesButton,
'appMenu': AppMenuButton,
'dateMenu': imports.ui.dateMenu.DateMenuButton,
'a11y': imports.ui.status.accessibility.ATIndicator,
'a11yGreeter': imports.ui.status.accessibility.ATGreeterIndicator,
'volume': imports.ui.status.volume.Indicator,
'battery': imports.ui.status.power.Indicator,
'lockScreen': imports.ui.status.lockScreenMenu.Indicator,
'keyboard': imports.ui.status.keyboard.InputSourceIndicator,
'powerMenu': imports.gdm.powerMenu.PowerMenuButton,
'userMenu': imports.ui.userMenu.UserMenuButton
};
if (Config.HAVE_BLUETOOTH)
PANEL_ITEM_IMPLEMENTATIONS['bluetooth'] =
imports.ui.status.bluetooth.Indicator;
try {
PANEL_ITEM_IMPLEMENTATIONS['network'] =
imports.ui.status.network.NMApplet;
} catch(e) {
log('NMApplet is not supported. It is possible that your NetworkManager version is too old');
}
const Panel = new Lang.Class({
Name: 'Panel',
_init : function() {
this.actor = new Shell.GenericContainer({ name: 'panel',
reactive: true });
this.actor._delegate = this;
this._sessionStyle = null;
this.statusArea = {};
this.menuManager = new PopupMenu.PopupMenuManager(this, { keybindingMode: Shell.KeyBindingMode.TOPBAR_POPUP });
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);
this._leftCorner = new PanelCorner(St.Side.LEFT);
this.actor.add_actor(this._leftCorner.actor);
this._rightCorner = new PanelCorner(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));
Main.overview.connect('showing', Lang.bind(this, function () {
this.actor.add_style_pseudo_class('overview');
}));
Main.overview.connect('hiding', Lang.bind(this, function () {
this.actor.remove_style_pseudo_class('overview');
}));
Main.layoutManager.panelBox.add(this.actor);
Main.ctrlAltTabManager.addGroup(this.actor, _("Top Bar"), 'emblem-system-symbolic',
{ sortGroup: CtrlAltTab.SortGroup.TOP });
Main.sessionMode.connect('updated', Lang.bind(this, this._updatePanel));
this._updatePanel();
},
_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, cornerMinHeight;
let cornerWidth, cornerHeight;
[cornerMinWidth, cornerWidth] = this._leftCorner.actor.get_preferred_width(-1);
[cornerMinHeight, cornerHeight] = this._leftCorner.actor.get_preferred_height(-1);
childBox.x1 = 0;
childBox.x2 = cornerWidth;
childBox.y1 = allocHeight;
childBox.y2 = allocHeight + cornerHeight;
this._leftCorner.actor.allocate(childBox, flags);
[cornerMinWidth, cornerWidth] = this._rightCorner.actor.get_preferred_width(-1);
[cornerMinHeight, cornerHeight] = this._rightCorner.actor.get_preferred_height(-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 (Main.modalCount > 0)
return false;
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;
},
toggleAppMenu: function() {
let indicator = this.statusArea.appMenu;
if (!indicator) // appMenu not supported by current session mode
return;
let menu = indicator.menu;
if (!indicator.actor.reactive)
return;
menu.toggle();
if (menu.isOpen)
menu.actor.navigate_focus(null, Gtk.DirectionType.TAB_FORWARD, false);
},
set boxOpacity(value) {
let isReactive = value > 0;
this._leftBox.opacity = value;
this._leftBox.reactive = isReactive;
this._centerBox.opacity = value;
this._centerBox.reactive = isReactive;
this._rightBox.opacity = value;
this._rightBox.reactive = isReactive;
},
get boxOpacity() {
return this._leftBox.opacity;
},
_updatePanel: function() {
let panel = Main.sessionMode.panel;
this._hideIndicators();
this._updateBox(panel.left, this._leftBox);
this._updateBox(panel.center, this._centerBox);
this._updateBox(panel.right, this._rightBox);
if (this._sessionStyle)
this._removeStyleClassName(this._sessionStyle);
this._sessionStyle = Main.sessionMode.panelStyle;
if (this._sessionStyle)
this._addStyleClassName(this._sessionStyle);
if (this.actor.get_text_direction() == Clutter.TextDirection.RTL) {
this._leftCorner.setStyleParent(this._rightBox);
this._rightCorner.setStyleParent(this._leftBox);
} else {
this._leftCorner.setStyleParent(this._leftBox);
this._rightCorner.setStyleParent(this._rightBox);
}
},
_hideIndicators: function() {
for (let role in PANEL_ITEM_IMPLEMENTATIONS) {
let indicator = this.statusArea[role];
if (!indicator)
continue;
if (indicator.menu)
indicator.menu.close();
indicator.container.hide();
}
},
_ensureIndicator: function(role) {
let indicator = this.statusArea[role];
if (!indicator) {
let constructor = PANEL_ITEM_IMPLEMENTATIONS[role];
if (!constructor) {
// This icon is not implemented (this is a bug)
return null;
}
indicator = new constructor(this);
this.statusArea[role] = indicator;
}
return indicator;
},
_updateBox: function(elements, box) {
let nChildren = box.get_n_children();
for (let i = 0; i < elements.length; i++) {
let role = elements[i];
let indicator = this._ensureIndicator(role);
if (indicator == null)
continue;
this._addToPanelBox(role, indicator, i + nChildren, box);
}
},
_addToPanelBox: function(role, indicator, position, box) {
let container = indicator.container;
container.show();
let parent = container.get_parent();
if (parent)
parent.remove_actor(container);
box.insert_child_at_index(container, position);
if (indicator.menu)
this.menuManager.addMenu(indicator.menu);
this.statusArea[role] = indicator;
let destroyId = indicator.connect('destroy', Lang.bind(this, function(emitter) {
delete this.statusArea[role];
emitter.disconnect(destroyId);
container.destroy();
}));
},
addToStatusArea: function(role, indicator, position, box) {
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');
position = position || 0;
let boxes = {
left: this._leftBox,
center: this._centerBox,
right: this._rightBox
};
let boxContainer = boxes[box] || this._rightBox;
this.statusArea[role] = indicator;
this._addToPanelBox(role, indicator, position, boxContainer);
return indicator;
},
_addStyleClassName: function(className) {
this.actor.add_style_class_name(className);
this._rightCorner.actor.add_style_class_name(className);
this._leftCorner.actor.add_style_class_name(className);
},
_removeStyleClassName: function(className) {
this.actor.remove_style_class_name(className);
this._rightCorner.actor.remove_style_class_name(className);
this._leftCorner.actor.remove_style_class_name(className);
}
});