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gnome-shell/js/ui/panel.js
Owen W. Taylor e8eec2d357 Use points for font sizes 
Do a basic job of converting font sizes from pixels to points, so they
will scale will the global GNOME scale factor. Some other sizes that are
clearly related to the font sizes are changed to ems, but no comprehensive
attempt is made to get rid of px units.

https://bugzilla.gnome.org/show_bug.cgi?id=636868
2011-03-15 12:01:40 -04:00

1088 lines
42 KiB
JavaScript
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/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Cairo = imports.cairo;
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
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 Gettext = imports.gettext.domain('gnome-shell');
const _ = Gettext.gettext;
const Config = imports.misc.config;
const CtrlAltTab = imports.ui.ctrlAltTab;
const Overview = imports.ui.overview;
const PopupMenu = imports.ui.popupMenu;
const PanelMenu = imports.ui.panelMenu;
const StatusMenu = imports.ui.statusMenu;
const DateMenu = imports.ui.dateMenu;
const Main = imports.ui.main;
const Tweener = imports.ui.tweener;
const PANEL_ICON_SIZE = 24;
const STARTUP_ANIMATION_TIME = 0.2;
const HOT_CORNER_ACTIVATION_TIMEOUT = 0.5;
const BUTTON_DND_ACTIVATION_TIMEOUT = 250;
const ANIMATED_ICON_UPDATE_TIMEOUT = 100;
const SPINNER_ANIMATION_TIME = 0.2;
const STANDARD_TRAY_ICON_ORDER = ['a11y', 'display', 'keyboard', 'volume', 'bluetooth', 'network', 'battery'];
const STANDARD_TRAY_ICON_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
};
if (Config.HAVE_BLUETOOTH)
STANDARD_TRAY_ICON_SHELL_IMPLEMENTATION['bluetooth'] = imports.ui.status.bluetooth.Indicator;
// 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 });
};
function AnimatedIcon(name, size) {
this._init(name, size);
}
AnimatedIcon.prototype = {
_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, function() {
if (this.actor.visible) {
this._timeoutId = Mainloop.timeout_add(ANIMATED_ICON_UPDATE_TIMEOUT, Lang.bind(this, this._update));
} else {
if (this._timeoutId)
Mainloop.source_remove(this._timeoutId);
this._timeoutId = 0;
}
}));
this._timeoutId = 0;
this._i = 0;
this._animations = St.TextureCache.get_default().load_sliced_image (global.datadir + '/theme/' + name, size, size);
this.actor.set_child(this._animations);
},
_update: function() {
this._animations.hide_all();
this._animations.show();
if (this._i && this._i < this._animations.get_n_children())
this._animations.get_nth_child(this._i++).show();
else {
this._i = 1;
if (this._animations.get_n_children())
this._animations.get_nth_child(0).show();
}
return true;
},
_onDestroy: function() {
if (this._timeoutId)
Mainloop.source_remove(this._timeoutId);
}
};
function TextShadower() {
this._init();
}
TextShadower.prototype = {
_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.
*/
function AppMenuButton() {
this._init();
}
AppMenuButton.prototype = {
__proto__: PanelMenu.Button.prototype,
_init: function() {
PanelMenu.Button.prototype._init.call(this, 0.0);
this._metaDisplay = global.screen.get_display();
this._startingApps = [];
this._targetApp = null;
let bin = new St.Bin({ name: 'appMenu' });
this.actor.set_child(bin);
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._container.add_actor(this._iconBox);
this._label = new TextShadower();
this._container.add_actor(this._label.actor);
this._quitMenu = new PopupMenu.PopupMenuItem('');
this.menu.addMenuItem(this._quitMenu);
this._quitMenu.connect('activate', Lang.bind(this, this._onQuit));
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();
tracker.connect('notify::focus-app', Lang.bind(this, this._sync));
tracker.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();
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;
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();
let bottomClip = node.get_length('app-icon-bottom-clip');
if (bottomClip > 0)
this._iconBox.set_clip(0, 0,
this._iconBox.width,
this._iconBox.height - bottomClip);
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_direction();
let yPadding = Math.floor(Math.max(0, allocHeight - naturalHeight) / 2);
childBox.y1 = yPadding;
childBox.y2 = childBox.y1 + Math.min(naturalHeight, allocHeight);
if (direction == St.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 == St.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 == St.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);
}
},
_onQuit: function() {
if (this._targetApp == null)
return;
this._targetApp.request_quit();
},
_onAppStateChanged: function(tracker, 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 (!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();
return;
}
if (this._iconBox.child != null)
this._iconBox.child.destroy();
this._iconBox.hide();
this._label.setText('');
this._targetApp = targetApp;
let icon = targetApp.get_faded_icon(2 * PANEL_ICON_SIZE);
this._label.setText(targetApp.get_name());
// TODO - _quit() doesn't really work on apps in state STARTING yet
this._quitMenu.label.set_text(_("Quit %s").format(targetApp.get_name()));
this._iconBox.set_child(icon);
this._iconBox.show();
if (targetApp.get_state() == Shell.AppState.STARTING)
this.startAnimation();
this.emit('changed');
}
};
Signals.addSignalMethods(AppMenuButton.prototype);
function PanelCorner(side) {
this._init(side);
}
PanelCorner.prototype = {
_init: function(side) {
this._side = side;
this.actor = new St.DrawingArea({ style_class: 'panel-corner' });
this.actor.connect('repaint', Lang.bind(this, this._repaint));
this.actor.connect('style-changed', Lang.bind(this, this.relayout));
},
_repaint: function() {
let node = this.actor.get_theme_node();
let cornerRadius = node.get_length("-panel-corner-radius");
let innerBorderWidth = node.get_length('-panel-corner-inner-border-width');
let outerBorderWidth = node.get_length('-panel-corner-outer-border-width');
let backgroundColor = node.get_color('-panel-corner-background-color');
let innerBorderColor = node.get_color('-panel-corner-inner-border-color');
let outerBorderColor = node.get_color('-panel-corner-outer-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,
innerBorderWidth + cornerRadius,
cornerRadius, Math.PI, 3 * Math.PI / 2);
else
cr.arc(0,
innerBorderWidth + cornerRadius,
cornerRadius, 3 * Math.PI / 2, 2 * Math.PI);
cr.lineTo(cornerRadius, 0);
cr.closePath();
let savedPath = cr.copyPath();
let over = _over(innerBorderColor,
_over(outerBorderColor, backgroundColor));
Clutter.cairo_set_source_color(cr, over);
cr.fill();
let xOffsetDirection = this._side == St.Side.LEFT ? -1 : 1;
let offset = outerBorderWidth;
over = _over(innerBorderColor, backgroundColor);
Clutter.cairo_set_source_color(cr, over);
cr.save();
cr.translate(xOffsetDirection * offset, - offset);
cr.appendPath(savedPath);
cr.fill();
cr.restore();
if (this._side == St.Side.LEFT)
cr.rectangle(cornerRadius - offset, 0, offset, outerBorderWidth);
else
cr.rectangle(0, 0, offset, outerBorderWidth);
cr.fill();
offset = innerBorderWidth;
Clutter.cairo_set_source_color(cr, backgroundColor);
cr.save();
cr.translate(xOffsetDirection * offset, - offset);
cr.appendPath(savedPath);
cr.fill();
cr.restore();
},
relayout: function() {
let node = this.actor.get_theme_node();
let cornerRadius = node.get_length("-panel-corner-radius");
let innerBorderWidth = node.get_length('-panel-corner-inner-border-width');
this.actor.set_size(cornerRadius,
innerBorderWidth + cornerRadius);
if (this._side == St.Side.LEFT)
this.actor.set_position(Main.panel.actor.x,
Main.panel.actor.y + Main.panel.actor.height - innerBorderWidth);
else
this.actor.set_position(Main.panel.actor.x + Main.panel.actor.width - cornerRadius,
Main.panel.actor.y + Main.panel.actor.height - innerBorderWidth);
}
};
/**
* HotCorner:
*
* This class manages the "hot corner" that can toggle switching to
* overview.
*/
function HotCorner() {
this._init();
}
HotCorner.prototype = {
_init : function() {
// We use this flag to mark the case where the user has entered the
// hot corner and has not left both the hot corner and a surrounding
// guard area (the "environs"). This avoids triggering the hot corner
// multiple times due to an accidental jitter.
this._entered = false;
this.actor = new Clutter.Group({ width: 3,
height: 3,
reactive: true });
this._corner = new Clutter.Rectangle({ width: 1,
height: 1,
opacity: 0,
reactive: true });
this.actor.add_actor(this._corner);
if (St.Widget.get_default_direction() == St.TextDirection.RTL) {
this._corner.set_position(this.actor.width - this._corner.width, 0);
this.actor.set_anchor_point_from_gravity(Clutter.Gravity.NORTH_EAST);
} else {
this._corner.set_position(0, 0);
}
this._activationTime = 0;
this.actor.connect('leave-event',
Lang.bind(this, this._onEnvironsLeft));
// Clicking on the hot corner environs should result in the same bahavior
// as clicking on the hot corner.
this.actor.connect('button-release-event',
Lang.bind(this, this._onCornerClicked));
// In addition to being triggered by the mouse enter event, the hot corner
// can be triggered by clicking on it. This is useful if the user wants to
// undo the effect of triggering the hot corner once in the hot corner.
this._corner.connect('enter-event',
Lang.bind(this, this._onCornerEntered));
this._corner.connect('button-release-event',
Lang.bind(this, this._onCornerClicked));
this._corner.connect('leave-event',
Lang.bind(this, this._onCornerLeft));
this._corner._delegate = this._corner;
this._corner.handleDragOver = Lang.bind(this,
function(source, actor, x, y, time) {
if (source == Main.xdndHandler) {
if(!Main.overview.visible && !Main.overview.animationInProgress) {
this.rippleAnimation();
Main.overview.showTemporarily();
Main.overview.beginItemDrag(actor);
}
}
});
Main.chrome.addActor(this.actor, { visibleInOverview: true, affectsStruts: false });
},
destroy: function() {
this.actor.destroy();
},
_addRipple : function(delay, time, startScale, startOpacity, finalScale, finalOpacity) {
// We draw a ripple by using a source image and animating it scaling
// outwards and fading away. We want the ripples to move linearly
// or it looks unrealistic, but if the opacity of the ripple goes
// linearly to zero it fades away too quickly, so we use Tweener's
// 'onUpdate' to give a non-linear curve to the fade-away and make
// it more visible in the middle section.
let [x, y] = this._corner.get_transformed_position();
let ripple = new St.BoxLayout({ style_class: 'ripple-box',
opacity: 255 * Math.sqrt(startOpacity),
scale_x: startScale,
scale_y: startScale,
x: x,
y: y });
ripple._opacity = startOpacity;
Tweener.addTween(ripple, { _opacity: finalOpacity,
scale_x: finalScale,
scale_y: finalScale,
delay: delay,
time: time,
transition: 'linear',
onUpdate: function() { ripple.opacity = 255 * Math.sqrt(ripple._opacity); },
onComplete: function() { ripple.destroy(); } });
Main.uiGroup.add_actor(ripple);
},
rippleAnimation: function() {
// Show three concentric ripples expanding outwards; the exact
// parameters were found by trial and error, so don't look
// for them to make perfect sense mathematically
// delay time scale opacity => scale opacity
this._addRipple(0.0, 0.83, 0.25, 1.0, 1.5, 0.0);
this._addRipple(0.05, 1.0, 0.0, 0.7, 1.25, 0.0);
this._addRipple(0.35, 1.0, 0.0, 0.3, 1, 0.0);
},
_onCornerEntered : function() {
if (!this._entered) {
this._entered = true;
if (!Main.overview.animationInProgress) {
this._activationTime = Date.now() / 1000;
this.rippleAnimation();
Main.overview.toggle();
}
}
return false;
},
_onCornerClicked : function() {
if (!Main.overview.animationInProgress)
this.maybeToggleOverviewOnClick();
return false;
},
_onCornerLeft : function(actor, event) {
if (event.get_related() != this.actor)
this._entered = false;
// Consume event, otherwise this will confuse onEnvironsLeft
return true;
},
_onEnvironsLeft : function(actor, event) {
if (event.get_related() != this._corner)
this._entered = false;
return false;
},
// Toggles the overview unless this is the first click on the Activities button within the HOT_CORNER_ACTIVATION_TIMEOUT time
// of the hot corner being triggered. This check avoids opening and closing the overview if the user both triggered the hot corner
// and clicked the Activities button.
maybeToggleOverviewOnClick: function() {
if (this._activationTime == 0 || Date.now() / 1000 - this._activationTime > HOT_CORNER_ACTIVATION_TIMEOUT)
Main.overview.toggle();
this._activationTime = 0;
}
}
function Panel() {
this._init();
}
Panel.prototype = {
_init : function() {
this.actor = new St.BoxLayout({ style_class: 'menu-bar',
name: 'panel',
reactive: true });
this.actor._delegate = this;
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._centerBox = new St.BoxLayout({ name: 'panelCenter' });
this._rightBox = new St.BoxLayout({ name: 'panelRight' });
this._leftCorner = new PanelCorner(St.Side.LEFT);
this._rightCorner = new PanelCorner(St.Side.RIGHT);
/* This box container ensures that the centerBox is positioned in the *absolute*
* center, but can be pushed aside if necessary. */
this._boxContainer = new Shell.GenericContainer();
this.actor.add(this._boxContainer, { expand: true });
this._boxContainer.add_actor(this._leftBox);
this._boxContainer.add_actor(this._centerBox);
this._boxContainer.add_actor(this._rightBox);
this._boxContainer.connect('get-preferred-width', Lang.bind(this, function(box, forHeight, alloc) {
let children = box.get_children();
for (let i = 0; i < children.length; i++) {
let [childMin, childNatural] = children[i].get_preferred_width(forHeight);
alloc.min_size += childMin;
alloc.natural_size += childNatural;
}
}));
this._boxContainer.connect('get-preferred-height', Lang.bind(this, function(box, forWidth, alloc) {
let children = box.get_children();
for (let i = 0; i < children.length; i++) {
let [childMin, childNatural] = children[i].get_preferred_height(forWidth);
if (childMin > alloc.min_size)
alloc.min_size = childMin;
if (childNatural > alloc.natural_size)
alloc.natural_size = childNatural;
}
}));
this._boxContainer.connect('allocate', Lang.bind(this, function(container, 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_direction() == St.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_direction() == St.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);
}));
/* Button on the left side of the panel. */
/* Translators: If there is no suitable word for "Activities" in your language, you can use the word for "Overview". */
let label = new St.Label({ text: _("Activities") });
this.button = new St.Button({ name: 'panelActivities',
style_class: 'panel-button',
reactive: true,
can_focus: true });
this.button.set_child(label);
this.button._delegate = this.button;
this.button._xdndTimeOut = 0;
this.button.handleDragOver = Lang.bind(this,
function(source, actor, x, y, time) {
if (source == Main.xdndHandler) {
if (this.button._xdndTimeOut != 0)
Mainloop.source_remove(this.button._xdndTimeOut);
this.button._xdndTimeOut = Mainloop.timeout_add(BUTTON_DND_ACTIVATION_TIMEOUT,
Lang.bind(this,
function() {
this._xdndShowOverview(actor);
}));
}
});
this._leftBox.add(this.button);
// Synchronize the buttons pseudo classes with its corner
this.button.connect('style-changed', Lang.bind(this,
function(actor) {
let rtl = actor.get_direction() == St.TextDirection.RTL;
let corner = rtl ? this._rightCorner : this._leftCorner;
let pseudoClass = actor.get_style_pseudo_class();
corner.actor.set_style_pseudo_class(pseudoClass);
}));
this._hotCorner = null;
let appMenuButton = new AppMenuButton();
this._leftBox.add(appMenuButton.actor);
this._menus.addMenu(appMenuButton.menu);
/* center */
this._dateMenu = new DateMenu.DateMenuButton();
this._centerBox.add(this._dateMenu.actor, { y_fill: true });
this._menus.addMenu(this._dateMenu.menu);
/* right */
// System status applets live in statusBox, while legacy tray icons
// live in trayBox
// The trayBox is hidden when there are no tray icons.
this._trayBox = new St.BoxLayout({ name: 'legacyTray' });
this._statusBox = new St.BoxLayout({ name: 'statusTray' });
this._trayBox.hide();
this._rightBox.add(this._trayBox);
this._rightBox.add(this._statusBox);
this._statusmenu = new StatusMenu.StatusMenuButton();
this._statusmenu.actor.name = 'panelStatus';
this._rightBox.add(this._statusmenu.actor);
// Synchronize the buttons pseudo classes with its corner
this._statusmenu.actor.connect('style-changed', Lang.bind(this,
function(actor) {
let rtl = actor.get_direction() == St.TextDirection.RTL;
let corner = rtl ? this._leftCorner : this._rightCorner;
let pseudoClass = actor.get_style_pseudo_class();
corner.actor.set_style_pseudo_class(pseudoClass);
}));
Main.statusIconDispatcher.connect('status-icon-added', Lang.bind(this, this._onTrayIconAdded));
Main.statusIconDispatcher.connect('status-icon-removed', Lang.bind(this, this._onTrayIconRemoved));
// TODO: decide what to do with the rest of the panel in the Overview mode (make it fade-out, become non-reactive, etc.)
// We get into the Overview mode on button-press-event as opposed to button-release-event because eventually we'll probably
// have the Overview act like a menu that allows the user to release the mouse on the activity the user wants
// to switch to.
this.button.connect('clicked', Lang.bind(this, function(b) {
if (!Main.overview.animationInProgress) {
this._hotCorner.maybeToggleOverviewOnClick();
return true;
} else {
return false;
}
}));
// In addition to pressing the button, the Overview can be entered and exited by other means, such as
// pressing the System key, Alt+F1 or Esc. We want the button to be pressed in when the Overview is entered
// and to be released when it is exited regardless of how it was triggered.
Main.overview.connect('showing', Lang.bind(this, function() {
this.button.checked = true;
}));
Main.overview.connect('hiding', Lang.bind(this, function() {
this.button.checked = false;
}));
Main.chrome.addActor(this.actor, { visibleInOverview: true });
Main.chrome.addActor(this._leftCorner.actor, { visibleInOverview: true,
affectsStruts: false,
affectsInputRegion: false });
Main.chrome.addActor(this._rightCorner.actor, { visibleInOverview: true,
affectsStruts: false,
affectsInputRegion: false });
Main.ctrlAltTabManager.addGroup(this.actor, _("Panel"), 'start-here',
{ sortGroup: CtrlAltTab.SortGroup.TOP });
},
_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.button) {
Mainloop.source_remove(this.button._xdndTimeOut);
this.button._xdndTimeOut = 0;
return;
}
if(!Main.overview.visible && !Main.overview.animationInProgress) {
Main.overview.showTemporarily();
Main.overview.beginItemDrag(actor);
}
Mainloop.source_remove(this.button._xdndTimeOut);
this.button._xdndTimeOut = 0;
},
// While there can be multiple hotcorners (one per monitor), the hot corner
// that is on top of the Activities button is special since it needs special
// coordination with clicking on that button
setHotCorner: function(corner) {
this._hotCorner = corner;
},
startStatusArea: function() {
for (let i = 0; i < STANDARD_TRAY_ICON_ORDER.length; i++) {
let role = STANDARD_TRAY_ICON_ORDER[i];
let constructor = STANDARD_TRAY_ICON_SHELL_IMPLEMENTATION[role];
if (!constructor) {
// This icon is not implemented (this is a bug)
continue;
}
let indicator = new constructor();
this._statusBox.add(indicator.actor);
this._menus.addMenu(indicator.menu);
}
// PopupMenuManager depends on menus being added in order for
// keyboard navigation
this._menus.addMenu(this._statusmenu.menu);
},
startupAnimation: function() {
let oldY = this.actor.y;
this.actor.y = oldY - this.actor.height;
Tweener.addTween(this.actor,
{ y: oldY,
time: STARTUP_ANIMATION_TIME,
transition: 'easeOutQuad'
});
let oldCornerY = this._leftCorner.actor.y;
this._leftCorner.actor.y = oldCornerY - this.actor.height;
this._rightCorner.actor.y = oldCornerY - this.actor.height;
Tweener.addTween(this._leftCorner.actor,
{ y: oldCornerY,
time: STARTUP_ANIMATION_TIME,
transition: 'easeOutQuad'
});
Tweener.addTween(this._rightCorner.actor,
{ y: oldCornerY,
time: STARTUP_ANIMATION_TIME,
transition: 'easeOutQuad'
});
},
relayout: function() {
let primary = global.get_primary_monitor();
this.actor.set_position(primary.x, primary.y);
this.actor.set_size(primary.width, -1);
this._leftCorner.relayout();
this._rightCorner.relayout();
},
_onTrayIconAdded: function(o, icon, role) {
icon.height = PANEL_ICON_SIZE;
if (STANDARD_TRAY_ICON_SHELL_IMPLEMENTATION[role]) {
// This icon is legacy, and replaced by a Shell version
// Hide it
return;
}
// Figure out the index in our well-known order for this icon
let position = STANDARD_TRAY_ICON_ORDER.indexOf(role);
icon._rolePosition = position;
let children = this._trayBox.get_children();
let i;
// Walk children backwards, until we find one that isn't
// well-known, or one where we should follow
for (i = children.length - 1; i >= 0; i--) {
let rolePosition = children[i]._rolePosition;
if (!rolePosition || position > rolePosition) {
this._trayBox.insert_actor(icon, i + 1);
break;
}
}
if (i == -1) {
// If we didn't find a position, we must be first
this._trayBox.insert_actor(icon, 0);
}
// Make sure the trayBox is shown.
this._trayBox.show();
},
_onTrayIconRemoved: function(o, icon) {
if (icon.get_parent() != null)
this._trayBox.remove_actor(icon);
},
};
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