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Diffstat (limited to '')
| -rw-r--r-- | js/ui/ctrlAltTab.js | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/js/ui/ctrlAltTab.js b/js/ui/ctrlAltTab.js new file mode 100644 index 0000000..421fecf --- /dev/null +++ b/js/ui/ctrlAltTab.js @@ -0,0 +1,203 @@ +// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*- +/* exported CtrlAltTabManager */ + +const { Clutter, GObject, Meta, Shell, St } = imports.gi; + +const Main = imports.ui.main; +const SwitcherPopup = imports.ui.switcherPopup; +const Params = imports.misc.params; + +var POPUP_APPICON_SIZE = 96; + +var SortGroup = { + TOP: 0, + MIDDLE: 1, + BOTTOM: 2, +}; + +var CtrlAltTabManager = class CtrlAltTabManager { + constructor() { + this._items = []; + this.addGroup(global.window_group, + _('Windows'), + 'focus-windows-symbolic', { + sortGroup: SortGroup.TOP, + focusCallback: this._focusWindows.bind(this), + }); + } + + addGroup(root, name, icon, params) { + const item = Params.parse(params, { + sortGroup: SortGroup.MIDDLE, + proxy: root, + focusCallback: null, + }); + + item.root = root; + item.name = name; + item.iconName = icon; + + this._items.push(item); + root.connect('destroy', () => this.removeGroup(root)); + if (root instanceof St.Widget) + global.focus_manager.add_group(root); + } + + removeGroup(root) { + if (root instanceof St.Widget) + global.focus_manager.remove_group(root); + for (let i = 0; i < this._items.length; i++) { + if (this._items[i].root == root) { + this._items.splice(i, 1); + return; + } + } + } + + focusGroup(item, timestamp) { + if (item.focusCallback) + item.focusCallback(timestamp); + else + item.root.navigate_focus(null, St.DirectionType.TAB_FORWARD, false); + } + + // Sort the items into a consistent order; panel first, tray last, + // and everything else in between, sorted by X coordinate, so that + // they will have the same left-to-right ordering in the + // Ctrl-Alt-Tab dialog as they do onscreen. + _sortItems(a, b) { + if (a.sortGroup != b.sortGroup) + return a.sortGroup - b.sortGroup; + + let [ax] = a.proxy.get_transformed_position(); + let [bx] = b.proxy.get_transformed_position(); + + return ax - bx; + } + + popup(backward, binding, mask) { + // Start with the set of focus groups that are currently mapped + let items = this._items.filter(item => item.proxy.mapped); + + // And add the windows metacity would show in its Ctrl-Alt-Tab list + if (Main.sessionMode.hasWindows && !Main.overview.visible) { + let display = global.display; + let workspaceManager = global.workspace_manager; + let activeWorkspace = workspaceManager.get_active_workspace(); + let windows = display.get_tab_list(Meta.TabList.DOCKS, + activeWorkspace); + let windowTracker = Shell.WindowTracker.get_default(); + let textureCache = St.TextureCache.get_default(); + for (let i = 0; i < windows.length; i++) { + let icon = null; + let iconName = null; + if (windows[i].get_window_type() == Meta.WindowType.DESKTOP) { + iconName = 'video-display-symbolic'; + } else { + let app = windowTracker.get_window_app(windows[i]); + if (app) { + icon = app.create_icon_texture(POPUP_APPICON_SIZE); + } else { + icon = new St.Icon({ + gicon: textureCache.bind_cairo_surface_property(windows[i], 'icon'), + icon_size: POPUP_APPICON_SIZE, + }); + } + } + + items.push({ + name: windows[i].title, + proxy: windows[i].get_compositor_private(), + focusCallback: timestamp => { + Main.activateWindow(windows[i], timestamp); + }, + iconActor: icon, + iconName, + sortGroup: SortGroup.MIDDLE, + }); + } + } + + if (!items.length) + return; + + items.sort(this._sortItems.bind(this)); + + if (!this._popup) { + this._popup = new CtrlAltTabPopup(items); + this._popup.show(backward, binding, mask); + + this._popup.connect('destroy', + () => { + this._popup = null; + }); + } + } + + _focusWindows(timestamp) { + global.display.focus_default_window(timestamp); + } +}; + +var CtrlAltTabPopup = GObject.registerClass( +class CtrlAltTabPopup extends SwitcherPopup.SwitcherPopup { + _init(items) { + super._init(items); + + this._switcherList = new CtrlAltTabSwitcher(this._items); + } + + _keyPressHandler(keysym, action) { + if (action == Meta.KeyBindingAction.SWITCH_PANELS) + this._select(this._next()); + else if (action == Meta.KeyBindingAction.SWITCH_PANELS_BACKWARD) + this._select(this._previous()); + else if (keysym == Clutter.KEY_Left) + this._select(this._previous()); + else if (keysym == Clutter.KEY_Right) + this._select(this._next()); + else + return Clutter.EVENT_PROPAGATE; + + return Clutter.EVENT_STOP; + } + + _finish(time) { + super._finish(time); + Main.ctrlAltTabManager.focusGroup(this._items[this._selectedIndex], time); + } +}); + +var CtrlAltTabSwitcher = GObject.registerClass( +class CtrlAltTabSwitcher extends SwitcherPopup.SwitcherList { + _init(items) { + super._init(true); + + for (let i = 0; i < items.length; i++) + this._addIcon(items[i]); + } + + _addIcon(item) { + const box = new St.BoxLayout({ + style_class: 'alt-tab-app', + vertical: true, + }); + + let icon = item.iconActor; + if (!icon) { + icon = new St.Icon({ + icon_name: item.iconName, + icon_size: POPUP_APPICON_SIZE, + }); + } + box.add_child(icon); + + let text = new St.Label({ + text: item.name, + x_align: Clutter.ActorAlign.CENTER, + }); + box.add_child(text); + + this.addItem(box, text); + } +}); |