theme: Search in versioned directories

We support third party themes, via the "stylesheetName" property of a
mode's json files. However, our external CSS API is not completely
stable. If a third party theme wants to work on multiple gnome-shell
versions - for example because it is shipped as a Flatpak or a Snap - it
is not possible to ensure that a theme corresponding to the running
gnome-shell version is loaded.

GTK+ loads themes from versioned directories, search backwards from the
current version. Let's do the same in gnome-shell too. Then a downstream
theme can be shipped in $datadir/gnome-shell/3.28/theme/.

We keep searching all of the current paths. Additionally, the default
case where we look for the 'gnome' theme as a resource in the binary
continues to be the default so there are no additional lookups for users
of this theme.

data/theme/gnome-shell-sass/_common.scss

@@ -733,6 +733,7 @@ StScrollBar {
   transition-duration: 500ms;
   font-weight: bold;
   height: 1.86em;
+  font-feature-settings: "tnum";
 
   &.unlock-screen,
   &.login-screen,
@@ -958,6 +959,7 @@ StScrollBar {
       padding: 0.1em;
       margin: 2px;
       border-radius: 1.4em;
+      font-feature-settings: "tnum";
       &:hover,&:focus { background-color: lighten($bg_color,5%); }
       &:active,&:selected {
         color: lighten($selected_fg_color,5%);
@@ -1867,6 +1869,7 @@ StScrollBar {
 .screen-shield-clock-time {
   font-size: 72pt;
   text-shadow: 0px 2px 2px rgba(0,0,0,0.4);
+  font-feature-settings: "tnum";
 }
 
 .screen-shield-clock-date { 

js/ui/appDisplay.js

@@ -1778,10 +1778,11 @@ var AppIcon = new Lang.Class({
     activate(button) {
         let event = Clutter.get_current_event();
         let modifiers = event ? event.get_state() : 0;
-        let openNewWindow = this.app.can_open_new_window () &&
+        let isMiddleButton = button && button == Clutter.BUTTON_MIDDLE;
-                            modifiers & Clutter.ModifierType.CONTROL_MASK &&
+        let isCtrlPressed = (modifiers & Clutter.ModifierType.CONTROL_MASK) != 0;
-                            this.app.state == Shell.AppState.RUNNING ||
+        let openNewWindow = this.app.can_open_new_window() &&
-                            button && button == 2;
+                            this.app.state == Shell.AppState.RUNNING &&
+                            (isCtrlPressed || isMiddleButton);
 
         if (this.app.state == Shell.AppState.STOPPED || openNewWindow)
             this.animateLaunch();
@@ -1870,7 +1871,9 @@ var AppIconMenu = new Lang.Class({
                 this._appendSeparator();
                 separatorShown = true;
             }
-            let item = this._appendMenuItem(window.title);
+            let title = window.title ? window.title
+                                     : this._source.app.get_name();
+            let item = this._appendMenuItem(title);
             item.connect('activate', () => {
                 this.emit('activate-window', window);
             });

js/ui/closeDialog.js

@@ -2,6 +2,7 @@
 
 const Clutter = imports.gi.Clutter;
 const Gio = imports.gi.Gio;
+const GLib = imports.gi.GLib;
 const GObject = imports.gi.GObject;
 const Lang = imports.lang;
 const Meta = imports.gi.Meta;
@@ -13,6 +14,7 @@ const Tweener = imports.ui.tweener;
 
 var FROZEN_WINDOW_BRIGHTNESS = -0.3
 var DIALOG_TRANSITION_TIME = 0.15
+var ALIVE_TIMEOUT = 5000;
 
 var CloseDialog = new Lang.Class({
     Name: 'CloseDialog',
@@ -26,6 +28,7 @@ var CloseDialog = new Lang.Class({
         this.parent();
         this._window = window;
         this._dialog = null;
+        this._timeoutId = 0;
     },
 
     get window() {
@@ -97,6 +100,14 @@ var CloseDialog = new Lang.Class({
         if (this._dialog != null)
             return;
 
+        Meta.disable_unredirect_for_screen(global.screen);
+
+        this._timeoutId = GLib.timeout_add(GLib.PRIORITY_DEFAULT, ALIVE_TIMEOUT,
+            () => {
+                this._window.check_alive(global.display.get_current_time_roundtrip());
+                return GLib.SOURCE_CONTINUE;
+            });
+
         this._addWindowEffect();
         this._initDialog();
 
@@ -117,6 +128,11 @@ var CloseDialog = new Lang.Class({
         if (this._dialog == null)
             return;
 
+        Meta.enable_unredirect_for_screen(global.screen);
+
+        GLib.source_remove(this._timeoutId);
+        this._timeoutId = 0;
+
         let dialog = this._dialog;
         this._dialog = null;
         this._removeWindowEffect();

js/ui/main.js

@@ -14,6 +14,7 @@ const St = imports.gi.St;
 const AccessDialog = imports.ui.accessDialog;
 const AudioDeviceSelection = imports.ui.audioDeviceSelection;
 const Components = imports.ui.components;
+const Config = imports.misc.config;
 const CtrlAltTab = imports.ui.ctrlAltTab;
 const EndSessionDialog = imports.ui.endSessionDialog;
 const Environment = imports.ui.environment;
@@ -249,26 +250,61 @@ function _initializeUI() {
     });
 }
 
+function _findThemeDirByVersion(dir, major, minor, name) {
+    let path;
+    let stylesheet;
+    let subpath;
+
+    /* Don't search back to before we introduced this support */
+    let max_minor = (major == 3) ? 28 : 0;
+
+    for (let i = minor; i >= max_minor; i = i - 2) {
+        subpath = major + '.' + i;
+        path = GLib.build_filenamev([dir, 'gnome-shell', subpath, 'theme', name]);
+        stylesheet = Gio.file_new_for_path(path);
+
+        log('Checking for ' + path);
+
+        if (stylesheet.query_exists(null)) {
+            log('Using ' + path);
+            return stylesheet;
+        }
+    }
+
+    path = GLib.build_filenamev([dir, 'gnome-shell', 'theme', name]);
+    stylesheet = Gio.file_new_for_path(path);
+
+    if (stylesheet.query_exists(null)) {
+        log('Using unversioned' + path);
+        return stylesheet;
+    }
+
+    return null;
+}
+
 function _getStylesheet(name) {
     let stylesheet;
 
+    let [major, minor] = Config.PACKAGE_VERSION.split('.');
+
+    // Directories are versioned according to the stable version
+    if ((minor % 2) == 1)
+        minor++;
+
     stylesheet = Gio.File.new_for_uri('resource:///org/gnome/shell/theme/' + name);
-    if (stylesheet.query_exists(null))
+    if (stylesheet.query_exists(null)) {
+        log('Using built-in default theme ' + name)
         return stylesheet;
+    }
 
     let dataDirs = GLib.get_system_data_dirs();
     for (let i = 0; i < dataDirs.length; i++) {
-        let path = GLib.build_filenamev([dataDirs[i], 'gnome-shell', 'theme', name]);
+        stylesheet = _findThemeDirByVersion(dataDirs[i], major, minor, name)
-        let stylesheet = Gio.file_new_for_path(path);
+        if (stylesheet != null)
-        if (stylesheet.query_exists(null))
             return stylesheet;
     }
 
-    stylesheet = Gio.File.new_for_path(global.datadir + '/theme/' + name);
+    return _findThemeDirByVersion(global.datadir, major, minor, name);
-    if (stylesheet.query_exists(null))
-        return stylesheet;
-
-    return null;
 }
 
 function _getDefaultStylesheet() {

js/ui/status/network.js

@@ -995,8 +995,16 @@ var NMWirelessDialog = new Lang.Class({
         else if (!oneHasConnection && twoHasConnection)
             return 1;
 
-        let oneStrength = one.accessPoints[0].strength;
+        let oneAp = one.accessPoints[0] || null;
-        let twoStrength = two.accessPoints[0].strength;
+        let twoAp = two.accessPoints[0] || null;
+
+        if (oneAp != null && twoAp == null)
+            return -1;
+        else if (oneAp == null && twoAp != null)
+            return 1;
+
+        let oneStrength = oneAp.strength;
+        let twoStrength = twoAp.strength;
 
         // place stronger connections first
         if (oneStrength != twoStrength)
@@ -1156,6 +1164,11 @@ var NMWirelessDialog = new Lang.Class({
             Util.ensureActorVisibleInScrollView(this._scrollView, network.item.actor);
             this._selectNetwork(network);
         });
+        network.item.actor.connect('destroy', () => {
+            let keyFocus = global.stage.key_focus;
+            if (keyFocus && keyFocus.contains(network.item.actor))
+                this._itemBox.grab_key_focus();
+        });
     },
 });
 

js/ui/status/thunderbolt.js

@@ -49,7 +49,6 @@ const BoltDeviceInterface = '<node> \
   </interface> \
 </node>';
 
-const BoltClientProxy = Gio.DBusProxy.makeProxyWrapper(BoltClientInterface);
 const BoltDeviceProxy = Gio.DBusProxy.makeProxyWrapper(BoltDeviceInterface);
 
 /*  */
@@ -78,6 +77,7 @@ var AuthMode = {
     ENABLED: 'enabled'
 };
 
+const BOLT_DBUS_CLIENT_IFACE = 'org.freedesktop.bolt1.Manager';
 const BOLT_DBUS_NAME = 'org.freedesktop.bolt';
 const BOLT_DBUS_PATH = '/org/freedesktop/bolt';
 
@@ -87,22 +87,26 @@ var Client = new Lang.Class({
     _init() {
 
 	this._proxy = null;
-        new BoltClientProxy(
+        let nodeInfo = Gio.DBusNodeInfo.new_for_xml(BoltClientInterface);
-	    Gio.DBus.system,
+        Gio.DBusProxy.new(Gio.DBus.system,
-	    BOLT_DBUS_NAME,
+                          Gio.DBusProxyFlags.DO_NOT_AUTO_START,
-	    BOLT_DBUS_PATH,
+                          nodeInfo.lookup_interface(BOLT_DBUS_CLIENT_IFACE),
-	    this._onProxyReady.bind(this)
+                          BOLT_DBUS_NAME,
-	);
+                          BOLT_DBUS_PATH,
+                          BOLT_DBUS_CLIENT_IFACE,
+                          null,
+                          this._onProxyReady.bind(this));
 
 	this.probing = false;
     },
 
-    _onProxyReady(proxy, error) {
+    _onProxyReady(o, res) {
-	if (error !== null) {
+        try {
-	    log('error creating bolt proxy: %s'.format(error.message));
+	    this._proxy = Gio.DBusProxy.new_finish(res);
-	    return;
+        } catch(e) {
-	}
+	    log('error creating bolt proxy: %s'.format(e.message));
-	this._proxy = proxy;
+            return;
+        }
 	this._propsChangedId = this._proxy.connect('g-properties-changed', this._onPropertiesChanged.bind(this));
 	this._deviceAddedId = this._proxy.connectSignal('DeviceAdded', this._onDeviceAdded.bind(this));
 

js/ui/windowManager.js

@@ -24,7 +24,7 @@ const EdgeDragAction = imports.ui.edgeDragAction;
 const CloseDialog = imports.ui.closeDialog;
 const SwitchMonitor = imports.ui.switchMonitor;
 
-const SHELL_KEYBINDINGS_SCHEMA = 'org.gnome.shell.keybindings';
+var SHELL_KEYBINDINGS_SCHEMA = 'org.gnome.shell.keybindings';
 var MINIMIZE_WINDOW_ANIMATION_TIME = 0.2;
 var SHOW_WINDOW_ANIMATION_TIME = 0.15;
 var DIALOG_SHOW_WINDOW_ANIMATION_TIME = 0.1;

js/ui/workspace.js

@@ -447,12 +447,13 @@ var WindowOverlay = new Lang.Class({
         this.border = new St.Bin({ style_class: 'window-clone-border' });
 
         let title = new St.Label({ style_class: 'window-caption',
-                                   text: metaWindow.title });
+                                   text: this._getCaption() });
         title.clutter_text.ellipsize = Pango.EllipsizeMode.END;
         windowClone.actor.label_actor = title;
 
         this._updateCaptionId = metaWindow.connect('notify::title', w => {
             this.title.text = w.title;
+            this.title.text = this._getCaption();
             this.relayout(false);
         });
 
@@ -565,6 +566,16 @@ var WindowOverlay = new Lang.Class({
         }
     },
 
+    _getCaption() {
+        let metaWindow = this._windowClone.metaWindow;
+        if (metaWindow.title)
+            return metaWindow.title;
+
+        let tracker = Shell.WindowTracker.get_default();
+        let app = tracker.get_window_app(metaWindow);
+        return app.get_name();
+    },
+
     _animateOverlayActor(actor, x, y, width, height) {
         let params = { x: x,
                        y: y,

js/ui/workspaceThumbnail.js

@@ -31,7 +31,7 @@ var WORKSPACE_CUT_SIZE = 10;
 
 var WORKSPACE_KEEP_ALIVE_TIME = 100;
 
-const OVERRIDE_SCHEMA = 'org.gnome.shell.overrides';
+var OVERRIDE_SCHEMA = 'org.gnome.shell.overrides';
 
 /* A layout manager that requests size only for primary_actor, but then allocates
    all using a fixed layout */
@@ -241,7 +241,7 @@ var WindowClone = new Lang.Class({
 Signals.addSignalMethods(WindowClone.prototype);
 
 
-const ThumbnailState = {
+var ThumbnailState = {
     NEW   :         0,
     ANIMATING_IN :  1,
     NORMAL:         2,

po/zh_TW.po

@@ -8,8 +8,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: gnome-shell 3.3.90\n"
 "Report-Msgid-Bugs-To: https://gitlab.gnome.org/GNOME/gnome-shell/issues\n"
-"POT-Creation-Date: 2018-03-05 21:11+0000\n"
+"POT-Creation-Date: 2018-06-08 17:30+0000\n"
-"PO-Revision-Date: 2018-03-10 20:30+0800\n"
+"PO-Revision-Date: 2018-06-09 11:17+0800\n"
 "Last-Translator: Chao-Hsiung Liao <j_h_liau@yahoo.com.tw>\n"
 "Language-Team: Chinese (Taiwan) <zh-l10n@lists.linux.org.tw>\n"
 "Language: zh_TW\n"
@@ -17,7 +17,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=1; plural=0;\n"
-"X-Generator: Poedit 2.0.6\n"
+"X-Generator: Poedit 2.0.8\n"
 
 #: data/50-gnome-shell-system.xml:6
 msgid "System"
@@ -308,7 +308,7 @@ msgid "There was an error loading the preferences dialog for %s:"
 msgstr "載入 %s 的偏好設定對話盒時發生錯誤："
 
 #: js/gdm/authPrompt.js:147 js/ui/audioDeviceSelection.js:71
-#: js/ui/components/networkAgent.js:117 js/ui/components/polkitAgent.js:148
+#: js/ui/components/networkAgent.js:117 js/ui/components/polkitAgent.js:153
 #: js/ui/endSessionDialog.js:482 js/ui/extensionDownloader.js:197
 #: js/ui/shellMountOperation.js:343 js/ui/status/network.js:919
 msgid "Cancel"
@@ -328,20 +328,20 @@ msgctxt "button"
 msgid "Sign In"
 msgstr "登入"
 
-#: js/gdm/loginDialog.js:315
+#: js/gdm/loginDialog.js:319
 msgid "Choose Session"
 msgstr "選擇工作階段"
 
 #. translators: this message is shown below the user list on the
 #. login screen. It can be activated to reveal an entry for
 #. manually entering the username.
-#: js/gdm/loginDialog.js:458
+#: js/gdm/loginDialog.js:462
 msgid "Not listed?"
 msgstr "沒有列出來？"
 
 #. Translators: this message is shown below the username entry field
 #. to clue the user in on how to login to the local network realm
-#: js/gdm/loginDialog.js:887
+#: js/gdm/loginDialog.js:891
 #, javascript-format
 msgid "(e.g., user or %s)"
 msgstr "(例如： user 或 %s)"
@@ -349,12 +349,12 @@ msgstr "(例如： user 或 %s)"
 #. TTLS and PEAP are actually much more complicated, but this complication
 #. is not visible here since we only care about phase2 authentication
 #. (and don't even care of which one)
-#: js/gdm/loginDialog.js:892 js/ui/components/networkAgent.js:243
+#: js/gdm/loginDialog.js:896 js/ui/components/networkAgent.js:243
 #: js/ui/components/networkAgent.js:261
 msgid "Username: "
 msgstr "使用者名稱："
 
-#: js/gdm/loginDialog.js:1228
+#: js/gdm/loginDialog.js:1234
 msgid "Login Window"
 msgstr "登入視窗"
 
@@ -601,32 +601,32 @@ msgstr "常用"
 msgid "All"
 msgstr "全部"
 
-#: js/ui/appDisplay.js:1886
+#: js/ui/appDisplay.js:1889
 msgid "New Window"
 msgstr "新視窗"
 
-#: js/ui/appDisplay.js:1900
+#: js/ui/appDisplay.js:1903
 msgid "Launch using Dedicated Graphics Card"
 msgstr "使用獨立顯卡啟動"
 
-#: js/ui/appDisplay.js:1927 js/ui/dash.js:285
+#: js/ui/appDisplay.js:1930 js/ui/dash.js:285
 msgid "Remove from Favorites"
 msgstr "自喜好中移除"
 
-#: js/ui/appDisplay.js:1933
+#: js/ui/appDisplay.js:1936
 msgid "Add to Favorites"
 msgstr "加入喜好"
 
-#: js/ui/appDisplay.js:1943
+#: js/ui/appDisplay.js:1946
 msgid "Show Details"
 msgstr "顯示詳細資訊"
 
-#: js/ui/appFavorites.js:138
+#: js/ui/appFavorites.js:140
 #, javascript-format
 msgid "%s has been added to your favorites."
 msgstr "%s 已加入您的喜好中。"
 
-#: js/ui/appFavorites.js:172
+#: js/ui/appFavorites.js:174
 #, javascript-format
 msgid "%s has been removed from your favorites."
 msgstr "%s 已經從您的喜好中移除。"
@@ -787,22 +787,22 @@ msgid "Clear All"
 msgstr "全部清除"
 
 #. Translators: %s is an application name
-#: js/ui/closeDialog.js:44
+#: js/ui/closeDialog.js:47
 #, javascript-format
 msgid "“%s” is not responding."
 msgstr "「%s」沒有回應。"
 
-#: js/ui/closeDialog.js:45
+#: js/ui/closeDialog.js:48
 msgid ""
 "You may choose to wait a short while for it to continue or force the "
 "application to quit entirely."
 msgstr "您可以選擇再等一下讓它繼續，或是強制讓應用程式立刻退出。"
 
-#: js/ui/closeDialog.js:61
+#: js/ui/closeDialog.js:64
 msgid "Force Quit"
 msgstr "強制退出"
 
-#: js/ui/closeDialog.js:64
+#: js/ui/closeDialog.js:67
 msgid "Wait"
 msgstr "等待"
 
@@ -819,7 +819,7 @@ msgstr "外部裝置已拔除"
 msgid "Open with %s"
 msgstr "用 %s 開啟"
 
-#: js/ui/components/keyring.js:107 js/ui/components/polkitAgent.js:284
+#: js/ui/components/keyring.js:107 js/ui/components/polkitAgent.js:297
 msgid "Password:"
 msgstr "密碼： "
 
@@ -856,18 +856,18 @@ msgstr "私密金鑰密碼："
 msgid "Service: "
 msgstr "服務："
 
-#: js/ui/components/networkAgent.js:292 js/ui/components/networkAgent.js:659
+#: js/ui/components/networkAgent.js:292 js/ui/components/networkAgent.js:664
 msgid "Authentication required by wireless network"
 msgstr "無線網路所需要的核對"
 
-#: js/ui/components/networkAgent.js:293 js/ui/components/networkAgent.js:660
+#: js/ui/components/networkAgent.js:293 js/ui/components/networkAgent.js:665
 #, javascript-format
 msgid ""
 "Passwords or encryption keys are required to access the wireless network "
 "“%s”."
 msgstr "需要密碼或是加密金鑰來存取無線網路「%s」。"
 
-#: js/ui/components/networkAgent.js:297 js/ui/components/networkAgent.js:663
+#: js/ui/components/networkAgent.js:297 js/ui/components/networkAgent.js:668
 msgid "Wired 802.1X authentication"
 msgstr "有線網路 802.1X 核對"
 
@@ -875,15 +875,15 @@ msgstr "有線網路 802.1X 核對"
 msgid "Network name: "
 msgstr "網路名稱："
 
-#: js/ui/components/networkAgent.js:304 js/ui/components/networkAgent.js:667
+#: js/ui/components/networkAgent.js:304 js/ui/components/networkAgent.js:672
 msgid "DSL authentication"
 msgstr "DSL 核對"
 
-#: js/ui/components/networkAgent.js:311 js/ui/components/networkAgent.js:673
+#: js/ui/components/networkAgent.js:311 js/ui/components/networkAgent.js:678
 msgid "PIN code required"
 msgstr "需要 PIN 碼"
 
-#: js/ui/components/networkAgent.js:312 js/ui/components/networkAgent.js:674
+#: js/ui/components/networkAgent.js:312 js/ui/components/networkAgent.js:679
 msgid "PIN code is needed for the mobile broadband device"
 msgstr "這個行動寬頻裝置需要 PIN 碼"
 
@@ -891,29 +891,29 @@ msgstr "這個行動寬頻裝置需要 PIN 碼"
 msgid "PIN: "
 msgstr "PIN： "
 
-#: js/ui/components/networkAgent.js:320 js/ui/components/networkAgent.js:680
+#: js/ui/components/networkAgent.js:320 js/ui/components/networkAgent.js:685
 msgid "Mobile broadband network password"
 msgstr "行動寬頻網路密碼"
 
-#: js/ui/components/networkAgent.js:321 js/ui/components/networkAgent.js:664
+#: js/ui/components/networkAgent.js:321 js/ui/components/networkAgent.js:669
-#: js/ui/components/networkAgent.js:668 js/ui/components/networkAgent.js:681
+#: js/ui/components/networkAgent.js:673 js/ui/components/networkAgent.js:686
 #, javascript-format
 msgid "A password is required to connect to “%s”."
 msgstr "連線至「%s」需要密碼。"
 
-#: js/ui/components/networkAgent.js:648 js/ui/status/network.js:1691
+#: js/ui/components/networkAgent.js:653 js/ui/status/network.js:1704
 msgid "Network Manager"
 msgstr "網路管理員"
 
-#: js/ui/components/polkitAgent.js:43
+#: js/ui/components/polkitAgent.js:48
 msgid "Authentication Required"
 msgstr "要求核對"
 
-#: js/ui/components/polkitAgent.js:71
+#: js/ui/components/polkitAgent.js:76
 msgid "Administrator"
 msgstr "管理員"
 
-#: js/ui/components/polkitAgent.js:151
+#: js/ui/components/polkitAgent.js:156
 msgid "Authenticate"
 msgstr "核對"
 
@@ -921,7 +921,7 @@ msgstr "核對"
 #. * requested authentication was not gained; this can happen
 #. * because of an authentication error (like invalid password),
 #. * for instance.
-#: js/ui/components/polkitAgent.js:270 js/ui/shellMountOperation.js:327
+#: js/ui/components/polkitAgent.js:283 js/ui/shellMountOperation.js:327
 msgid "Sorry, that didn’t work. Please try again."
 msgstr "抱歉，那沒有作用。請再試一次。"
 
@@ -969,7 +969,7 @@ msgstr "加入世界時鐘…"
 msgid "World Clocks"
 msgstr "世界時鐘"
 
-#: js/ui/dateMenu.js:225
+#: js/ui/dateMenu.js:227
 msgid "Weather"
 msgstr "天氣"
 
@@ -977,7 +977,7 @@ msgstr "天氣"
 #. libgweather for the possible condition strings. If at all
 #. possible, the sentence should match the grammatical case etc. of
 #. the inserted conditions.
-#: js/ui/dateMenu.js:289
+#: js/ui/dateMenu.js:291
 #, javascript-format
 msgid "%s all day."
 msgstr "全天%s。"
@@ -986,7 +986,7 @@ msgstr "全天%s。"
 #. libgweather for the possible condition strings. If at all
 #. possible, the sentence should match the grammatical case etc. of
 #. the inserted conditions.
-#: js/ui/dateMenu.js:295
+#: js/ui/dateMenu.js:297
 #, javascript-format
 msgid "%s, then %s later."
 msgstr "%s，較晚%s。"
@@ -995,30 +995,30 @@ msgstr "%s，較晚%s。"
 #. libgweather for the possible condition strings. If at all
 #. possible, the sentence should match the grammatical case etc. of
 #. the inserted conditions.
-#: js/ui/dateMenu.js:301
+#: js/ui/dateMenu.js:303
 #, javascript-format
 msgid "%s, then %s, followed by %s later."
 msgstr "%s，然後%s，接著較晚%s。"
 
-#: js/ui/dateMenu.js:312
+#: js/ui/dateMenu.js:314
 msgid "Select a location…"
 msgstr "選擇位置…"
 
-#: js/ui/dateMenu.js:315
+#: js/ui/dateMenu.js:317
 msgid "Loading…"
 msgstr "載入中…"
 
 #. Translators: %s is a temperature with unit, e.g. "23℃"
-#: js/ui/dateMenu.js:321
+#: js/ui/dateMenu.js:323
 #, javascript-format
 msgid "Feels like %s."
 msgstr "體感溫度 %s。"
 
-#: js/ui/dateMenu.js:324
+#: js/ui/dateMenu.js:326
 msgid "Go online for weather information"
 msgstr "上線以取得天氣資訊"
 
-#: js/ui/dateMenu.js:326
+#: js/ui/dateMenu.js:328
 msgid "Weather information is currently unavailable"
 msgstr "天氣資訊目前不可使用"
 
@@ -1239,13 +1239,13 @@ msgid "Leave On"
 msgstr "離開"
 
 #: js/ui/kbdA11yDialog.js:59 js/ui/status/bluetooth.js:143
-#: js/ui/status/network.js:1281
+#: js/ui/status/network.js:1294
 msgid "Turn On"
 msgstr "開啟"
 
 #: js/ui/kbdA11yDialog.js:67 js/ui/status/bluetooth.js:143
 #: js/ui/status/network.js:154 js/ui/status/network.js:337
-#: js/ui/status/network.js:1281 js/ui/status/network.js:1396
+#: js/ui/status/network.js:1294 js/ui/status/network.js:1409
 #: js/ui/status/nightLight.js:47 js/ui/status/rfkill.js:90
 #: js/ui/status/rfkill.js:117
 msgid "Turn Off"
@@ -1307,7 +1307,7 @@ msgstr "檢示來源"
 msgid "Web Page"
 msgstr "網頁"
 
-#: js/ui/messageTray.js:1493
+#: js/ui/messageTray.js:1495
 msgid "System Information"
 msgstr "系統資訊"
 
@@ -1622,7 +1622,7 @@ msgid "<unknown>"
 msgstr "<不明>"
 
 #. Translators: %s is a network identifier
-#: js/ui/status/network.js:441 js/ui/status/network.js:1310
+#: js/ui/status/network.js:441 js/ui/status/network.js:1323
 #, javascript-format
 msgid "%s Off"
 msgstr "%s 關閉"
@@ -1648,7 +1648,7 @@ msgid "%s Disconnecting"
 msgstr "%s 正在斷線"
 
 #. Translators: %s is a network identifier
-#: js/ui/status/network.js:459 js/ui/status/network.js:1302
+#: js/ui/status/network.js:459 js/ui/status/network.js:1315
 #, javascript-format
 msgid "%s Connecting"
 msgstr "正連線到 %s"
@@ -1688,7 +1688,7 @@ msgid "Mobile Broadband Settings"
 msgstr "行動寬頻設定值"
 
 #. Translators: %s is a network identifier
-#: js/ui/status/network.js:578 js/ui/status/network.js:1307
+#: js/ui/status/network.js:578 js/ui/status/network.js:1320
 #, javascript-format
 msgid "%s Hardware Disabled"
 msgstr "%s 硬體已停用"
@@ -1744,78 +1744,78 @@ msgstr "沒有網路"
 msgid "Use hardware switch to turn off"
 msgstr "使用硬體開關來關閉"
 
-#: js/ui/status/network.js:1173
+#: js/ui/status/network.js:1186
 msgid "Select Network"
 msgstr "選擇網路"
 
-#: js/ui/status/network.js:1179
+#: js/ui/status/network.js:1192
 msgid "Wi-Fi Settings"
 msgstr "Wi-Fi 設定值"
 
 #. Translators: %s is a network identifier
-#: js/ui/status/network.js:1298
+#: js/ui/status/network.js:1311
 #, javascript-format
 msgid "%s Hotspot Active"
 msgstr "%s 熱點有效"
 
 #. Translators: %s is a network identifier
-#: js/ui/status/network.js:1313
+#: js/ui/status/network.js:1326
 #, javascript-format
 msgid "%s Not Connected"
 msgstr "%s 未連線"
 
-#: js/ui/status/network.js:1413
+#: js/ui/status/network.js:1426
 msgid "connecting…"
 msgstr "連線中…"
 
 #. Translators: this is for network connections that require some kind of key or password
-#: js/ui/status/network.js:1416
+#: js/ui/status/network.js:1429
 msgid "authentication required"
 msgstr "要求核對"
 
-#: js/ui/status/network.js:1418
+#: js/ui/status/network.js:1431
 msgid "connection failed"
 msgstr "連線失敗"
 
-#: js/ui/status/network.js:1472
+#: js/ui/status/network.js:1485
 msgid "VPN Settings"
 msgstr "VPN 設定值"
 
-#: js/ui/status/network.js:1485
+#: js/ui/status/network.js:1498
 msgid "VPN"
 msgstr "VPN"
 
-#: js/ui/status/network.js:1495
+#: js/ui/status/network.js:1508
 msgid "VPN Off"
 msgstr "VPN 關閉"
 
-#: js/ui/status/network.js:1559 js/ui/status/rfkill.js:93
+#: js/ui/status/network.js:1572 js/ui/status/rfkill.js:93
 msgid "Network Settings"
 msgstr "網路設定值"
 
-#: js/ui/status/network.js:1588
+#: js/ui/status/network.js:1601
 #, javascript-format
 msgid "%s Wired Connection"
 msgid_plural "%s Wired Connections"
 msgstr[0] "%s 個有線網路連線"
 
-#: js/ui/status/network.js:1592
+#: js/ui/status/network.js:1605
 #, javascript-format
 msgid "%s Wi-Fi Connection"
 msgid_plural "%s Wi-Fi Connections"
 msgstr[0] "%s 個 Wi-Fi 連線"
 
-#: js/ui/status/network.js:1596
+#: js/ui/status/network.js:1609
 #, javascript-format
 msgid "%s Modem Connection"
 msgid_plural "%s Modem Connections"
 msgstr[0] "%s 個數據機連線"
 
-#: js/ui/status/network.js:1728
+#: js/ui/status/network.js:1741
 msgid "Connection failed"
 msgstr "連線失敗"
 
-#: js/ui/status/network.js:1729
+#: js/ui/status/network.js:1742
 msgid "Activation of network connection failed"
 msgstr "啟動網路連線失敗"
 
@@ -1918,7 +1918,7 @@ msgstr "Thunderbolt 授權錯誤"
 
 #: js/ui/status/thunderbolt.js:357
 #, javascript-format
-msgid "Could not authorize the thunderbolt device: %s"
+msgid "Could not authorize the Thunderbolt device: %s"
 msgstr "無法授權該 Thunderbolt 裝置：%s"
 
 #: js/ui/status/volume.js:128

src/shell-screenshot.c

@@ -31,6 +31,8 @@ struct _ShellScreenshotPrivate
   char *filename;
   char *filename_used;
 
+  GDateTime *datetime;
+
   cairo_surface_t *image;
   cairo_rectangle_int_t screenshot_area;
 
@@ -72,6 +74,7 @@ on_screenshot_written (GObject      *source,
   g_clear_pointer (&priv->image, cairo_surface_destroy);
   g_clear_pointer (&priv->filename, g_free);
   g_clear_pointer (&priv->filename_used, g_free);
+  g_clear_pointer (&priv->datetime, g_date_time_unref);
 
   meta_enable_unredirect_for_screen (shell_global_get_screen (priv->global));
 }
@@ -175,6 +178,7 @@ write_screenshot_thread (GTask        *result,
   GOutputStream *stream;
   ShellScreenshot *screenshot = SHELL_SCREENSHOT (object);
   ShellScreenshotPrivate *priv;
+  char *creation_time;
 
   g_assert (screenshot != NULL);
 
@@ -193,14 +197,18 @@ write_screenshot_thread (GTask        *result,
                                             0, 0,
                                             cairo_image_surface_get_width (priv->image),
                                             cairo_image_surface_get_height (priv->image));
+      creation_time = g_date_time_format (priv->datetime, "%c");
 
       if (gdk_pixbuf_save_to_stream (pixbuf, stream, "png", NULL, NULL,
-                                    "tEXt::Software", "gnome-screenshot", NULL))
+                                     "tEXt::Software", "gnome-screenshot",
+                                     "tEXt::Creation Time", creation_time,
+                                     NULL))
         status = CAIRO_STATUS_SUCCESS;
       else
         status = CAIRO_STATUS_WRITE_ERROR;
 
       g_object_unref (pixbuf);
+      g_free (creation_time);
     }
 
 
@@ -241,6 +249,7 @@ do_grab_screenshot (ShellScreenshot *screenshot,
                                                        n_captures,
                                                        x, y,
                                                        width, height);
+  priv->datetime = g_date_time_new_now_local ();
 
   for (i = 0; i < n_captures; i++)
     cairo_surface_destroy (captures[i].image);
@@ -432,6 +441,7 @@ grab_window_screenshot (ClutterActor *stage,
 
   stex = META_SHAPED_TEXTURE (meta_window_actor_get_texture (META_WINDOW_ACTOR (window_actor)));
   priv->image = meta_shaped_texture_get_image (stex, &clip);
+  priv->datetime = g_date_time_new_now_local ();
 
   settings = g_settings_new (A11Y_APPS_SCHEMA);
   if (priv->include_cursor && !g_settings_get_boolean (settings, MAGNIFIER_ACTIVE_KEY))

src/st/st-label.c

@@ -180,6 +180,7 @@ st_label_dispose (GObject   *object)
 {
   StLabelPrivate *priv = ST_LABEL (object)->priv;
 
+  priv->label = NULL;
   g_clear_pointer (&priv->text_shadow_pipeline, cogl_object_unref);
 
   G_OBJECT_CLASS (st_label_parent_class)->dispose (object);

src/st/st-private.c

@@ -117,6 +117,7 @@ _st_set_text_from_style (ClutterText *text,
   const PangoFontDescription *font;
   StTextAlign align;
   gdouble spacing;
+  gchar *font_features;
 
   st_theme_node_get_foreground_color (theme_node, &color);
   clutter_text_set_color (text, &color);
@@ -151,6 +152,13 @@ _st_set_text_from_style (ClutterText *text,
       pango_attr_list_insert (attribs, letter_spacing);
     }
 
+  font_features = st_theme_node_get_font_features (theme_node);
+  if (font_features)
+    {
+      pango_attr_list_insert (attribs, pango_attr_font_features_new (font_features));
+      g_free (font_features);
+    }
+
   clutter_text_set_attributes (text, attribs);
 
   if (attribs)

src/st/st-texture-cache.c

@@ -37,6 +37,7 @@ struct _StTextureCachePrivate
 
   /* Things that were loaded with a cache policy != NONE */
   GHashTable *keyed_cache; /* char * -> CoglTexture* */
+  GHashTable *keyed_surface_cache; /* char * -> cairo_surface_t* */
 
   /* Presently this is used to de-duplicate requests for GIcons and async URIs. */
   GHashTable *outstanding_requests; /* char * -> AsyncTextureLoadData * */
@@ -145,6 +146,10 @@ st_texture_cache_init (StTextureCache *self)
 
   self->priv->keyed_cache = g_hash_table_new_full (g_str_hash, g_str_equal,
                                                    g_free, cogl_object_unref);
+  self->priv->keyed_surface_cache = g_hash_table_new_full (g_str_hash,
+                                                           g_str_equal,
+                                                           g_free,
+                                                           (GDestroyNotify) cairo_surface_destroy);
   self->priv->outstanding_requests = g_hash_table_new_full (g_str_hash, g_str_equal,
                                                             g_free, NULL);
   self->priv->file_monitors = g_hash_table_new_full (g_file_hash, (GEqualFunc) g_file_equal,
@@ -166,6 +171,7 @@ st_texture_cache_dispose (GObject *object)
     }
 
   g_clear_pointer (&self->priv->keyed_cache, g_hash_table_destroy);
+  g_clear_pointer (&self->priv->keyed_surface_cache, g_hash_table_destroy);
   g_clear_pointer (&self->priv->outstanding_requests, g_hash_table_destroy);
   g_clear_pointer (&self->priv->file_monitors, g_hash_table_destroy);
 
@@ -520,6 +526,8 @@ finish_texture_load (AsyncTextureLoadData *data,
     goto out;
 
   texdata = pixbuf_to_cogl_texture (pixbuf);
+  if (!texdata)
+    goto out;
 
   if (data->policy != ST_TEXTURE_CACHE_POLICY_NONE)
     {
@@ -986,7 +994,7 @@ file_changed_cb (GFileMonitor      *monitor,
   g_free (key);
 
   key = g_strdup_printf (CACHE_PREFIX_FILE_FOR_CAIRO "%u", file_hash);
-  g_hash_table_remove (cache->priv->keyed_cache, key);
+  g_hash_table_remove (cache->priv->keyed_surface_cache, key);
   g_free (key);
 
   g_signal_emit (cache, signals[TEXTURE_FILE_CHANGED], 0, file);
@@ -1273,6 +1281,9 @@ st_texture_cache_load_file_sync_to_cogl_texture (StTextureCache *cache,
       texdata = pixbuf_to_cogl_texture (pixbuf);
       g_object_unref (pixbuf);
 
+      if (!texdata)
+        goto out;
+
       if (policy == ST_TEXTURE_CACHE_POLICY_FOREVER)
         {
           cogl_object_ref (texdata);
@@ -1304,7 +1315,7 @@ st_texture_cache_load_file_sync_to_cairo_surface (StTextureCache        *cache,
 
   key = g_strdup_printf (CACHE_PREFIX_FILE_FOR_CAIRO "%u", g_file_hash (file));
 
-  surface = g_hash_table_lookup (cache->priv->keyed_cache, key);
+  surface = g_hash_table_lookup (cache->priv->keyed_surface_cache, key);
 
   if (surface == NULL)
     {
@@ -1318,7 +1329,8 @@ st_texture_cache_load_file_sync_to_cairo_surface (StTextureCache        *cache,
       if (policy == ST_TEXTURE_CACHE_POLICY_FOREVER)
         {
           cairo_surface_reference (surface);
-          g_hash_table_insert (cache->priv->keyed_cache, g_strdup (key), surface);
+          g_hash_table_insert (cache->priv->keyed_surface_cache,
+                               g_strdup (key), surface);
         }
     }
   else

src/st/st-theme-node.c

@@ -3019,6 +3019,39 @@ st_theme_node_get_font (StThemeNode *node)
   return node->font_desc;
 }
 
+gchar *
+st_theme_node_get_font_features (StThemeNode *node)
+{
+  int i;
+
+  ensure_properties (node);
+
+  for (i = node->n_properties - 1; i >= 0; i--)
+    {
+      CRDeclaration *decl = node->properties[i];
+
+      if (strcmp (decl->property->stryng->str, "font-feature-settings") == 0)
+        {
+          CRTerm *term = decl->value;
+
+          if (!term->next && term->type == TERM_IDENT)
+            {
+              gchar *ident = term->content.str->stryng->str;
+
+              if (strcmp (ident, "inherit") == 0)
+                break;
+
+              if (strcmp (ident, "normal") == 0)
+                return NULL;
+            }
+
+          return (gchar *)cr_term_to_string (term);
+        }
+    }
+
+  return node->parent_node ? st_theme_node_get_font_features (node->parent_node) : NULL;
+}
+
 /**
  * st_theme_node_get_border_image:
  * @node: a #StThemeNode

src/st/st-theme-node.h

@@ -232,6 +232,8 @@ double st_theme_node_get_letter_spacing (StThemeNode *node);
  */
 const PangoFontDescription *st_theme_node_get_font (StThemeNode *node);
 
+gchar *st_theme_node_get_font_features (StThemeNode *node);
+
 StBorderImage *st_theme_node_get_border_image (StThemeNode *node);
 StShadow      *st_theme_node_get_box_shadow   (StThemeNode *node);
 StShadow      *st_theme_node_get_text_shadow  (StThemeNode *node);

src/st/test-theme.c

@@ -59,6 +59,24 @@ assert_font (StThemeNode *node,
   g_free (value);
 }
 
+static void
+assert_font_features (StThemeNode *node,
+                      const char  *node_description,
+                      const char  *expected)
+{
+  char *value = st_theme_node_get_font_features (node);
+
+  if (g_strcmp0 (expected, value) != 0)
+    {
+      g_print ("%s: %s.font-feature-settings: expected: %s, got: %s\n",
+               test, node_description, expected, value);
+      fail = TRUE;
+    }
+
+  if (value)
+    g_free (value);
+}
+
 static char *
 text_decoration_to_string (StTextDecoration decoration)
 {
@@ -396,7 +414,7 @@ test_background (void)
   /* text1 inherits the background image but not the color */
   assert_background_color (text1,  "text1",  0x00000000);
   assert_background_image (text1,  "text1",  "st/some-background.png");
-  /* text1 inherits inherits both, but then background: none overrides both */
+  /* text2 inherits both, but then background: none overrides both */
   assert_background_color (text2,  "text2",  0x00000000);
   assert_background_image (text2,  "text2",  NULL);
   /* background-image property */
@@ -413,6 +431,22 @@ test_font (void)
   assert_font (text3,  "text3",  "serif Bold Oblique Small-Caps 24px");
 }
 
+static void
+test_font_features (void)
+{
+  test = "font_features";
+  /* group1 has font-feature-settings: "tnum" */
+  assert_font_features (group1, "group1", "\"tnum\"");
+  /* text2 should inherit from group1 */
+  assert_font_features (text2,  "text2", "\"tnum\"");
+  /* group2 has font-feature-settings: "tnum", "zero" */
+  assert_font_features (group2, "group2", "\"tnum\", \"zero\"");
+  /* text3 should inherit from group2 using the inherit keyword */
+  assert_font_features (text3,  "text3",  "\"tnum\", \"zero\"");
+  /* text4 has font-feature-settings: normal */
+  assert_font_features (text4,  "text4",  NULL);
+}
+
 static void
 test_pseudo_class (void)
 {
@@ -554,6 +588,7 @@ main (int argc, char **argv)
   test_border ();
   test_background ();
   test_font ();
+  test_font_features ();
   test_pseudo_class ();
   test_inline_style ();
 

src/st/test-theme.css

@@ -13,6 +13,8 @@ stage {
     margin-left: 1in;
 
     background: #ff0000 url('some-background.png');
+
+    font-feature-settings: "tnum";
 }
 
 #text1 {
@@ -35,6 +37,7 @@ ClutterTexture.special-text {
 
 #group2 {
     font: italic 12px serif;
+    font-feature-settings: "tnum", "zero";
 }
 
 #text3 {
@@ -42,6 +45,11 @@ ClutterTexture.special-text {
     font-weight: bold;
     font-style: oblique;
     font-size: 200%;
+    font-feature-settings: "pnum";
+}
+
+#text4 {
+    font-feature-settings: normal;
 }
 
 ClutterTexture {
@@ -60,6 +68,10 @@ stage > #text2 {
     color: #ff0000;
 }
 
+#group2 > #text3 {
+    font-feature-settings: inherit;
+}
+
 #group2 {
     background-image: url('other-background.png');
     padding: 1px 2px 3px 4px;