gnome-shell/js/ui/panel.js

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/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Big = imports.gi.Big;
const Clutter = imports.gi.Clutter;
const Gtk = imports.gi.Gtk;
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const Lang = imports.lang;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const Shell = imports.gi.Shell;
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const Tweener = imports.ui.tweener;
const Button = imports.ui.button;
const Main = imports.ui.main;
const PANEL_HEIGHT = 26;
const TRAY_HEIGHT = PANEL_HEIGHT - 1;
const PANEL_BACKGROUND_COLOR = new Clutter.Color();
PANEL_BACKGROUND_COLOR.from_pixel(0x000000ff);
const PANEL_FOREGROUND_COLOR = new Clutter.Color();
PANEL_FOREGROUND_COLOR.from_pixel(0xffffffff);
const TRANSPARENT_COLOR = new Clutter.Color();
TRANSPARENT_COLOR.from_pixel(0x00000000);
// Don't make the mouse hover effect visible to the user for a menu feel.
const PANEL_BUTTON_COLOR = new Clutter.Color();
PANEL_BUTTON_COLOR.from_pixel(0x00000000);
// Lighten pressed buttons; darkening has no effect on a black background.
const PRESSED_BUTTON_BACKGROUND_COLOR = new Clutter.Color();
PRESSED_BUTTON_BACKGROUND_COLOR.from_pixel(0x324c6ffa);
const DEFAULT_FONT = 'Sans 16px';
const TRAY_PADDING = 0;
// See comments around _recomputeTraySize
const TRAY_SPACING = 14;
const TRAY_SPACING_MIN = 8;
// Used for the tray icon container with gtk pre-2.16, which doesn't
// fully support tray icon transparency
const TRAY_BACKGROUND_COLOR = new Clutter.Color();
TRAY_BACKGROUND_COLOR.from_pixel(0xefefefff);
const TRAY_BORDER_COLOR = new Clutter.Color();
TRAY_BORDER_COLOR.from_pixel(0x00000033);
const TRAY_CORNER_RADIUS = 5;
const TRAY_BORDER_WIDTH = 0;
function Panel() {
this._init();
}
Panel.prototype = {
_init : function() {
let global = Shell.Global.get();
// Put the background under the panel within a group.
this.actor = new Clutter.Group();
// backBox contains the panel background and the clock.
let backBox = new Big.Box({ width: global.screen_width,
height: PANEL_HEIGHT,
backgroundColor: PANEL_BACKGROUND_COLOR,
x_align: Big.BoxAlignment.CENTER });
this.actor.add_actor(backBox);
let box = new Big.Box({ x: 0,
y: 0,
height: PANEL_HEIGHT,
width: global.screen_width,
orientation: Big.BoxOrientation.HORIZONTAL,
spacing: 4 });
this.button = new Button.Button("Activities", PANEL_BUTTON_COLOR, PRESSED_BUTTON_BACKGROUND_COLOR, PANEL_FOREGROUND_COLOR, true, null, PANEL_HEIGHT, DEFAULT_FONT);
box.append(this.button.button, Big.BoxPackFlags.NONE);
let statusbox = new Big.Box();
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let statusmenu = this._statusmenu = new Shell.StatusMenu();
statusmenu.get_icon().hide();
statusmenu.get_name().fontName = DEFAULT_FONT;
statusmenu.get_name().color = PANEL_FOREGROUND_COLOR;
statusbox.append(this._statusmenu, Big.BoxPackFlags.NONE);
let statusbutton = new Button.Button(statusbox,
PANEL_BUTTON_COLOR,
PRESSED_BUTTON_BACKGROUND_COLOR,
PANEL_FOREGROUND_COLOR,
true, null, PANEL_HEIGHT);
statusbutton.button.connect('button-press-event', function (b, e) {
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statusmenu.toggle(e);
return false;
});
box.append(statusbutton.button, Big.BoxPackFlags.END);
// We get a deactivated event when the popup disappears
this._statusmenu.connect('deactivated', function (sm) {
statusbutton.release();
});
this._clock = new Clutter.Text({ font_name: DEFAULT_FONT,
color: PANEL_FOREGROUND_COLOR,
text: "" });
let clockbox = new Big.Box({ y_align: Big.BoxAlignment.CENTER,
padding_left: 4,
padding_right: 4 });
clockbox.append(this._clock, Big.BoxPackFlags.NONE);
backBox.append(clockbox, Big.BoxPackFlags.EXPAND);
// The tray icons live in trayBox within trayContainer.
// The trayBox is hidden when there are no tray icons.
let trayContainer = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
y_align: Big.BoxAlignment.START });
box.append(trayContainer, Big.BoxPackFlags.END);
let trayBox = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL,
height: TRAY_HEIGHT,
padding: TRAY_PADDING,
spacing: TRAY_SPACING });
this._trayBox = trayBox;
// gtk+ < 2.16 doesn't have fully-working icon transparency,
// so we want trayBox to be opaque in that case (the icons
// will at least pick up its background color).
if (Gtk.MAJOR_VERSION == 2 && Gtk.MINOR_VERSION < 16) {
trayBox.background_color = TRAY_BACKGROUND_COLOR;
trayBox.corner_radius = TRAY_CORNER_RADIUS;
trayBox.border = TRAY_BORDER_WIDTH;
trayBox.border_color = TRAY_BORDER_COLOR;
}
trayBox.hide();
trayContainer.append(trayBox, Big.BoxPackFlags.NONE);
this._traymanager = new Shell.TrayManager({ bg_color: TRAY_BACKGROUND_COLOR });
this._traymanager.connect('tray-icon-added',
Lang.bind(this, function(o, icon) {
trayBox.append(icon, Big.BoxPackFlags.NONE);
// Make sure the trayBox is shown.
trayBox.show();
this._recomputeTraySize();
}));
this._traymanager.connect('tray-icon-removed',
Lang.bind(this, function(o, icon) {
trayBox.remove_actor(icon);
if (trayBox.get_children().length == 0)
trayBox.hide();
this._recomputeTraySize();
}));
this._traymanager.manage_stage(global.stage);
// TODO: decide what to do with the rest of the panel in the overlay mode (make it fade-out, become non-reactive, etc.)
// We get into the overlay mode on button-press-event as opposed to button-release-event because eventually we'll probably
// have the overlay act like a menu that allows the user to release the mouse on the activity the user wants
// to switch to.
this.button.button.connect('button-press-event',
Lang.bind(Main.overlay, Main.overlay.toggle));
// In addition to pressing the button, the overlay 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 overlay is entered
// and to be released when it is exited regardless of how it was triggered.
Main.overlay.connect('showing', Lang.bind(this.button, this.button.pressIn));
Main.overlay.connect('hiding', Lang.bind(this.button, this.button.release));
this.actor.add_actor(box);
Main.chrome.addActor(this.actor, box);
Main.chrome.setVisibleInOverlay(this.actor, true);
// Start the clock
this._updateClock();
},
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startupAnimation: function() {
this.actor.y = -this.actor.height;
Tweener.addTween(this.actor,
{ y: 0,
time: 0.2,
transition: "easeOutQuad"
});
},
// By default, tray icons have a spacing of TRAY_SPACING. However this
// starts to fail if we have too many as can sadly happen; just jump down
// to a spacing of 8 if we're over 6.
// http://bugzilla.gnome.org/show_bug.cgi?id=590495
_recomputeTraySize: function () {
if (this._trayBox.get_children().length > 6)
this._trayBox.spacing = TRAY_SPACING_MIN;
else
this._trayBox.spacing = TRAY_SPACING;
},
_updateClock: function() {
let displayDate = new Date();
let msecRemaining = 60000 - (1000 * displayDate.getSeconds() +
displayDate.getMilliseconds());
if (msecRemaining < 500) {
displayDate.setMinutes(displayDate.getMinutes() + 1);
msecRemaining += 60000;
}
this._clock.set_text(displayDate.toLocaleFormat("%a %l:%M %p"));
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Mainloop.timeout_add(msecRemaining, Lang.bind(this, this._updateClock));
return false;
}
};