gnome-shell/js/ui/appDisplay.js
Colin Walters d024dbd779 Bug 582248 - Async loading of pixbufs and icon caching
Add a ShellTextureCache class which loads (and can cache)
pixmap->texture conversions.  This fixes a problem with the
async code in ClutterTexture that it was lower priority
than animations, and also ensures we're really only
loading these pixbufs once in the icon case.
2009-05-20 11:22:56 -04:00

478 lines
17 KiB
JavaScript

/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Big = imports.gi.Big;
const Clutter = imports.gi.Clutter;
const Pango = imports.gi.Pango;
const Gio = imports.gi.Gio;
const Gtk = imports.gi.Gtk;
const Shell = imports.gi.Shell;
const Lang = imports.lang;
const Signals = imports.signals;
const GenericDisplay = imports.ui.genericDisplay;
const Main = imports.ui.main;
const ENTERED_MENU_COLOR = new Clutter.Color();
ENTERED_MENU_COLOR.from_pixel(0x00ff0022);
const MENU_ICON_SIZE = 24;
const MENU_SPACING = 15;
// TODO - move this into GConf once we're not a plugin anymore
// but have taken over metacity
// This list is taken from GNOME Online popular applications
// http://online.gnome.org/applications
// but with nautilus removed (since it should already be running)
// and evince, totem, and gnome-file-roller removed (since they're
// usually started by opening documents, not by opening the app
// directly)
const DEFAULT_APPLICATIONS = [
'mozilla-firefox.desktop',
'gnome-terminal.desktop',
'evolution.desktop',
'gedit.desktop',
'mozilla-thunderbird.desktop',
'rhythmbox.desktop',
'epiphany.desktop',
'xchat.desktop',
'openoffice.org-1.9-writer.desktop',
'emacs.desktop',
'gnome-system-monitor.desktop',
'openoffice.org-1.9-calc.desktop',
'eclipse.desktop',
'openoffice.org-1.9-impress.desktop',
'vncviewer.desktop'
];
const MAX_ITEMS = 30;
/* This class represents a single display item containing information about an application.
*
* appInfo - GAppInfo object containing information about the application
* availableWidth - total width available for the item
*/
function AppDisplayItem(appInfo, availableWidth) {
this._init(appInfo, availableWidth);
}
AppDisplayItem.prototype = {
__proto__: GenericDisplay.GenericDisplayItem.prototype,
_init : function(appInfo, availableWidth) {
GenericDisplay.GenericDisplayItem.prototype._init.call(this, availableWidth);
this._appInfo = appInfo;
let name = appInfo.get_name();
let description = appInfo.get_description();
let iconTheme = Gtk.IconTheme.get_default();
let gicon = appInfo.get_icon();
let texCache = Shell.TextureCache.get_default();
let icon;
if (gicon == null)
icon = new Clutter.Texture({ width: GenericDisplay.ITEM_DISPLAY_ICON_SIZE,
height: GenericDisplay.ITEM_DISPLAY_ICON_SIZE
});
else
icon = texCache.load_gicon(gicon, GenericDisplay.ITEM_DISPLAY_ICON_SIZE);
this._setItemInfo(name, description, icon);
},
//// Public methods ////
// Returns the application info associated with this display item.
getAppInfo : function () {
return this._appInfo;
},
//// Public method overrides ////
// Opens an application represented by this display item.
launch : function() {
this._appInfo.launch([], Main.createAppLaunchContext());
},
//// Protected method overrides ////
// Ensures the preview icon is created.
_ensurePreviewIconCreated : function() {
if (!this._showPreview || this._previewIcon)
return;
let previewIconPath = null;
if (this._gicon != null) {
let iconTheme = Gtk.IconTheme.get_default();
let previewIconInfo = iconTheme.lookup_by_gicon(this._gicon, GenericDisplay.PREVIEW_ICON_SIZE, Gtk.IconLookupFlags.NO_SVG);
if (previewIconInfo)
previewIconPath = previewIconInfo.get_filename();
}
if (previewIconPath) {
try {
this._previewIcon = new Clutter.Texture({ width: GenericDisplay.PREVIEW_ICON_SIZE, height: GenericDisplay.PREVIEW_ICON_SIZE});
this._previewIcon.set_from_file(previewIconPath);
} catch (e) {
// we can get an error here if the file path doesn't exist on the system
log('Error loading AppDisplayItem preview icon ' + e);
}
}
}
};
const MENU_UNSELECTED = 0;
const MENU_SELECTED = 1;
const MENU_ENTERED = 2;
function MenuItem(name, id, iconName) {
this._init(name, id, iconName);
}
/**
* MenuItem:
* Shows the list of menus in the sidebar.
*/
MenuItem.prototype = {
_init: function(name, id, iconName) {
this.id = id;
this.actor = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL,
spacing: 4,
corner_radius: 4,
padding_right: 4,
reactive: true });
this.actor.connect('button-press-event', Lang.bind(this, function (a, e) {
this.setState(MENU_SELECTED);
}));
let iconTheme = Gtk.IconTheme.get_default();
let pixbuf = null;
this._icon = new Clutter.Texture({ width: MENU_ICON_SIZE,
height: MENU_ICON_SIZE });
// Wine manages not to have an icon
try {
pixbuf = iconTheme.load_icon(iconName, MENU_ICON_SIZE, 0 /* flags */);
} catch (e) {
pixbuf = iconTheme.load_icon('gtk-file', MENU_ICON_SIZE, 0);
}
if (pixbuf != null)
Shell.clutter_texture_set_from_pixbuf(this._icon, pixbuf);
this.actor.append(this._icon, 0);
this._text = new Clutter.Text({ color: GenericDisplay.ITEM_DISPLAY_NAME_COLOR,
font_name: "Sans 14px",
ellipsize: Pango.EllipsizeMode.END,
text: name });
this.actor.append(this._text, Big.BoxPackFlags.EXPAND);
let box = new Big.Box({ orientation: Big.BoxOrientation.HORIZONTAL,
y_align: Big.BoxAlignment.CENTER
});
this._arrow = new Shell.Arrow({ surface_width: MENU_ICON_SIZE/2,
surface_height: MENU_ICON_SIZE/2,
direction: Gtk.ArrowType.RIGHT,
opacity: 0
});
box.append(this._arrow, 0);
this.actor.append(box, 0);
},
getState: function() {
return this._state;
},
setState: function (state) {
if (state == this._state)
return;
this._state = state;
if (this._state == MENU_UNSELECTED) {
this.actor.background_color = null;
this._arrow.set_opacity(0);
} else if (this._state == MENU_ENTERED) {
this.actor.background_color = ENTERED_MENU_COLOR;
this._arrow.set_opacity(0xFF/2);
} else {
this.actor.background_color = GenericDisplay.ITEM_DISPLAY_SELECTED_BACKGROUND_COLOR;
this._arrow.set_opacity(0xFF);
}
this.emit('state-changed')
}
}
Signals.addSignalMethods(MenuItem.prototype);
/* This class represents a display containing a collection of application items.
* The applications are sorted based on their popularity by default, and based on
* their name if some search filter is applied.
*
* width - width available for the display
* height - height available for the display
*/
function AppDisplay(width, height, numberOfColumns, columnGap) {
this._init(width, height, numberOfColumns, columnGap);
}
AppDisplay.prototype = {
__proto__: GenericDisplay.GenericDisplay.prototype,
_init : function(width, height, numberOfColumns, columnGap) {
GenericDisplay.GenericDisplay.prototype._init.call(this, width, height, numberOfColumns, columnGap);
this._menus = [];
this._menuDisplays = [];
// map<itemId, array of category names>
this._appCategories = {};
this._appMonitor = new Shell.AppMonitor();
this._appSystem = new Shell.AppSystem();
this._appsStale = true;
this._appSystem.connect('changed', Lang.bind(this, function(appSys) {
this._appsStale = true;
// We still need to determine what events other than search can trigger
// a change in the set of applications that are being shown while the
// user in in the overlay mode, however let's redisplay just in case.
this._redisplay(false);
this._redisplayMenus();
}));
this._appMonitor.connect('changed', Lang.bind(this, function(monitor) {
this._redisplay(false)
}));
// Load the GAppInfos now so it doesn't slow down the first
// transition into the overlay
this._refreshCache();
this._focusInMenus = true;
this._activeMenuIndex = -1;
this._activeMenu = null;
this._activeMenuApps = null;
this._menuDisplay = new Big.Box({ orientation: Big.BoxOrientation.VERTICAL,
spacing: MENU_SPACING
});
this._redisplayMenus();
this.connect('expanded', Lang.bind(this, function (self) {
this._filterReset();
}));
},
moveRight: function() {
if (this._expanded && this._focusInMenu) {
this._focusInMenu = false;
this._activeMenu.setState(MENU_ENTERED);
this.selectFirstItem();
}
},
moveLeft: function() {
if (this._expanded && !this._focusInMenu) {
this._activeMenu.setState(MENU_SELECTED);
this.unsetSelected();
this._focusInMenu = true;
}
},
// Override genericDisplay.js
getSideArea: function() {
return this._menuDisplay;
},
selectUp: function() {
if (!(this._expanded && this._focusInMenu))
return GenericDisplay.GenericDisplay.prototype.selectUp.call(this);
this._selectMenuIndex(this._activeMenuIndex - 1);
return true;
},
selectDown: function() {
if (!(this._expanded && this._focusInMenu))
return GenericDisplay.GenericDisplay.prototype.selectDown.call(this);
this._selectMenuIndex(this._activeMenuIndex+1);
return true;
},
// Protected overrides
_filterActive: function() {
return !!this._search || this._activeMenuIndex >= 0;
},
_filterReset: function() {
GenericDisplay.GenericDisplay.prototype._filterReset.call(this);
if (this._activeMenu != null)
this._activeMenu.setState(MENU_UNSELECTED);
this._activeMenuIndex = -1;
this._activeMenu = null;
this._focusInMenu = true;
},
//// Private ////
_emitStateChange: function() {
this.emit('state-changed');
},
_selectMenuIndex: function(index) {
if (index < 0 || index >= this._menus.length)
return;
this._menuDisplays[index].setState(MENU_SELECTED);
},
_redisplayMenus: function() {
this._menuDisplay.remove_all();
for (let i = 0; i < this._menus.length; i++) {
let menu = this._menus[i];
let display = new MenuItem(menu.name, menu.id, menu.icon);
this._menuDisplays.push(display);
let menuIndex = i;
display.connect('state-changed', Lang.bind(this, function (display) {
let activated = display.getState() != MENU_UNSELECTED;
if (!activated && display == this._activeMenu) {
this._activeMenuIndex = -1;
this._activeMenu = null;
} else if (activated) {
if (display != this._activeMenu && this._activeMenu != null)
this._activeMenu.setState(MENU_UNSELECTED);
this._activeMenuIndex = menuIndex;
this._activeMenu = display;
this._activeMenuApps = this._appSystem.get_applications_for_menu(menu.id);
}
this._redisplay();
}));
this._menuDisplay.append(display.actor, 0);
}
},
//// Protected method overrides ////
// Gets information about all applications by calling Gio.app_info_get_all().
_refreshCache : function() {
let me = this;
if (!this._appsStale)
return;
this._allItems = {};
this._appCategories = {};
this._menus = this._appSystem.get_menus();
let apps = Gio.app_info_get_all();
for (let i = 0; i < apps.length; i++) {
let appInfo = apps[i];
if (!appInfo.should_show())
continue;
let appId = appInfo.get_id();
this._allItems[appId] = appInfo;
// [] is returned if we could not get the categories or the list of categories was empty
let categories = Shell.get_categories_for_desktop_file(appId);
this._appCategories[appId] = categories;
}
this._appsStale = false;
},
// Sets the list of the displayed items based on the most used apps.
_setDefaultList : function() {
// Ask or more app than we need, since the list of recently used apps
// might contain an app we don't have a desktop file for
var apps = this._appMonitor.get_apps (0, Math.round(MAX_ITEMS * 1.5));
this._matchedItems = [];
for (let i = 0; i < apps.length; i++) {
if (this._matchedItems.length > MAX_ITEMS)
break;
let appId = apps[i] + ".desktop";
let appInfo = this._allItems[appId];
if (appInfo) {
this._matchedItems.push(appId);
}
}
// Fill the list with default applications it's not full yet
for (let i = 0; i < DEFAULT_APPLICATIONS.length; i++) {
if (this._matchedItems.length > MAX_ITEMS)
break;
let appId = DEFAULT_APPLICATIONS[i];
let appInfo = this._allItems[appId];
// Don't add if not available or already present in the list
if (appInfo && (this._matchedItems.indexOf(appId) == -1)) {
this._matchedItems.push(appId);
}
}
},
// Compares items associated with the item ids based on the alphabetical order
// of the item names.
// Returns an integer value indicating the result of the comparison.
_compareItems : function(itemIdA, itemIdB) {
let appA = this._allItems[itemIdA];
let appB = this._allItems[itemIdB];
return appA.get_name().localeCompare(appB.get_name());
},
// Checks if the item info can be a match for the search string by checking
// the name, description, execution command, and categories for the application.
// Item info is expected to be GAppInfo.
// Returns a boolean flag indicating if itemInfo is a match.
_isInfoMatching : function(itemInfo, search) {
// Search takes precedence; not typically useful to search within a
// menu
if (this._activeMenu == null || search != "")
return this._isInfoMatchingSearch(itemInfo, search);
else
return this._isInfoMatchingMenu(itemInfo, search);
},
_isInfoMatchingMenu : function(itemInfo, search) {
let id = itemInfo.get_id();
for (let i = 0; i < this._activeMenuApps.length; i++) {
let activeId = this._activeMenuApps[i];
if (activeId == id)
return true;
}
return false;
},
_isInfoMatchingSearch: function(itemInfo, search) {
if (search == null || search == '')
return true;
let name = itemInfo.get_name().toLowerCase();
if (name.indexOf(search) >= 0)
return true;
let description = itemInfo.get_description();
if (description) {
description = description.toLowerCase();
if (description.indexOf(search) >= 0)
return true;
}
if (itemInfo.get_executable() == null) {
log("Missing an executable for " + itemInfo.get_name());
} else {
let exec = itemInfo.get_executable().toLowerCase();
if (exec.indexOf(search) >= 0)
return true;
}
// we expect this._appCategories.hasOwnProperty(itemInfo.get_id()) to always be true here
let categories = this._appCategories[itemInfo.get_id()];
for (let i = 0; i < categories.length; i++) {
let category = categories[i].toLowerCase();
if (category.indexOf(search) >= 0)
return true;
}
return false;
},
// Creates an AppDisplayItem based on itemInfo, which is expected be a GAppInfo object.
_createDisplayItem: function(itemInfo) {
return new AppDisplayItem(itemInfo, this._columnWidth);
}
};
Signals.addSignalMethods(AppDisplay.prototype);