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Diffstat (limited to 'js/ui/layout.js')
| -rw-r--r-- | js/ui/layout.js | 1409 |
1 files changed, 1409 insertions, 0 deletions
diff --git a/js/ui/layout.js b/js/ui/layout.js new file mode 100644 index 0000000..b082ec8 --- /dev/null +++ b/js/ui/layout.js @@ -0,0 +1,1409 @@ +// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*- +/* exported MonitorConstraint, LayoutManager */ + +const { Clutter, Gio, GLib, GObject, Meta, Shell, St } = imports.gi; +const Signals = imports.signals; + +const Background = imports.ui.background; +const BackgroundMenu = imports.ui.backgroundMenu; + +const DND = imports.ui.dnd; +const Main = imports.ui.main; +const Params = imports.misc.params; +const Ripples = imports.ui.ripples; + +var STARTUP_ANIMATION_TIME = 500; +var KEYBOARD_ANIMATION_TIME = 150; +var BACKGROUND_FADE_ANIMATION_TIME = 1000; + +var HOT_CORNER_PRESSURE_THRESHOLD = 100; // pixels +var HOT_CORNER_PRESSURE_TIMEOUT = 1000; // ms + +function isPopupMetaWindow(actor) { + switch (actor.meta_window.get_window_type()) { + case Meta.WindowType.DROPDOWN_MENU: + case Meta.WindowType.POPUP_MENU: + case Meta.WindowType.COMBO: + return true; + default: + return false; + } +} + +var MonitorConstraint = GObject.registerClass({ + Properties: { + 'primary': GObject.ParamSpec.boolean('primary', + 'Primary', 'Track primary monitor', + GObject.ParamFlags.READABLE | GObject.ParamFlags.WRITABLE, + false), + 'index': GObject.ParamSpec.int('index', + 'Monitor index', 'Track specific monitor', + GObject.ParamFlags.READABLE | GObject.ParamFlags.WRITABLE, + -1, 64, -1), + 'work-area': GObject.ParamSpec.boolean('work-area', + 'Work-area', 'Track monitor\'s work-area', + GObject.ParamFlags.READABLE | GObject.ParamFlags.WRITABLE, + false), + }, +}, class MonitorConstraint extends Clutter.Constraint { + _init(props) { + this._primary = false; + this._index = -1; + this._workArea = false; + + super._init(props); + } + + get primary() { + return this._primary; + } + + set primary(v) { + if (v) + this._index = -1; + this._primary = v; + if (this.actor) + this.actor.queue_relayout(); + this.notify('primary'); + } + + get index() { + return this._index; + } + + set index(v) { + this._primary = false; + this._index = v; + if (this.actor) + this.actor.queue_relayout(); + this.notify('index'); + } + + // eslint-disable-next-line camelcase + get work_area() { + return this._workArea; + } + + // eslint-disable-next-line camelcase + set work_area(v) { + if (v == this._workArea) + return; + this._workArea = v; + if (this.actor) + this.actor.queue_relayout(); + this.notify('work-area'); + } + + vfunc_set_actor(actor) { + if (actor) { + if (!this._monitorsChangedId) { + this._monitorsChangedId = + Main.layoutManager.connect('monitors-changed', () => { + this.actor.queue_relayout(); + }); + } + + if (!this._workareasChangedId) { + this._workareasChangedId = + global.display.connect('workareas-changed', () => { + if (this._workArea) + this.actor.queue_relayout(); + }); + } + } else { + if (this._monitorsChangedId) + Main.layoutManager.disconnect(this._monitorsChangedId); + this._monitorsChangedId = 0; + + if (this._workareasChangedId) + global.display.disconnect(this._workareasChangedId); + this._workareasChangedId = 0; + } + + super.vfunc_set_actor(actor); + } + + vfunc_update_allocation(actor, actorBox) { + if (!this._primary && this._index < 0) + return; + + if (!Main.layoutManager.primaryMonitor) + return; + + let index; + if (this._primary) + index = Main.layoutManager.primaryIndex; + else + index = Math.min(this._index, Main.layoutManager.monitors.length - 1); + + let rect; + if (this._workArea) { + let workspaceManager = global.workspace_manager; + let ws = workspaceManager.get_workspace_by_index(0); + rect = ws.get_work_area_for_monitor(index); + } else { + rect = Main.layoutManager.monitors[index]; + } + + actorBox.init_rect(rect.x, rect.y, rect.width, rect.height); + } +}); + +var Monitor = class Monitor { + constructor(index, geometry, geometryScale) { + this.index = index; + this.x = geometry.x; + this.y = geometry.y; + this.width = geometry.width; + this.height = geometry.height; + this.geometry_scale = geometryScale; + } + + get inFullscreen() { + return global.display.get_monitor_in_fullscreen(this.index); + } +}; + +const UiActor = GObject.registerClass( +class UiActor extends St.Widget { + vfunc_get_preferred_width(_forHeight) { + let width = global.stage.width; + return [width, width]; + } + + vfunc_get_preferred_height(_forWidth) { + let height = global.stage.height; + return [height, height]; + } +}); + +const defaultParams = { + trackFullscreen: false, + affectsStruts: false, + affectsInputRegion: true, +}; + +var LayoutManager = GObject.registerClass({ + Signals: { 'hot-corners-changed': {}, + 'startup-complete': {}, + 'startup-prepared': {}, + 'monitors-changed': {}, + 'system-modal-opened': {}, + 'keyboard-visible-changed': { param_types: [GObject.TYPE_BOOLEAN] } }, +}, class LayoutManager extends GObject.Object { + _init() { + super._init(); + + this._rtl = Clutter.get_default_text_direction() == Clutter.TextDirection.RTL; + this.monitors = []; + this.primaryMonitor = null; + this.primaryIndex = -1; + this.hotCorners = []; + + this._keyboardIndex = -1; + this._rightPanelBarrier = null; + + this._inOverview = false; + this._updateRegionIdle = 0; + + this._trackedActors = []; + this._topActors = []; + this._isPopupWindowVisible = false; + this._startingUp = true; + this._pendingLoadBackground = false; + + // Set up stage hierarchy to group all UI actors under one container. + this.uiGroup = new UiActor({ name: 'uiGroup' }); + this.uiGroup.set_flags(Clutter.ActorFlags.NO_LAYOUT); + + global.stage.add_child(this.uiGroup); + + global.stage.remove_actor(global.window_group); + this.uiGroup.add_actor(global.window_group); + + // Using addChrome() to add actors to uiGroup will position actors + // underneath the top_window_group. + // To insert actors at the top of uiGroup, we use addTopChrome() or + // add the actor directly using uiGroup.add_actor(). + global.stage.remove_actor(global.top_window_group); + this.uiGroup.add_actor(global.top_window_group); + + this.overviewGroup = new St.Widget({ name: 'overviewGroup', + visible: false, + reactive: true }); + this.addChrome(this.overviewGroup); + + this.screenShieldGroup = new St.Widget({ + name: 'screenShieldGroup', + visible: false, + clip_to_allocation: true, + layout_manager: new Clutter.BinLayout(), + }); + this.addChrome(this.screenShieldGroup); + + this.panelBox = new St.BoxLayout({ name: 'panelBox', + vertical: true }); + this.addChrome(this.panelBox, { affectsStruts: true, + trackFullscreen: true }); + this.panelBox.connect('notify::allocation', + this._panelBoxChanged.bind(this)); + + this.modalDialogGroup = new St.Widget({ name: 'modalDialogGroup', + layout_manager: new Clutter.BinLayout() }); + this.uiGroup.add_actor(this.modalDialogGroup); + + this.keyboardBox = new St.BoxLayout({ name: 'keyboardBox', + reactive: true, + track_hover: true }); + this.addTopChrome(this.keyboardBox); + this._keyboardHeightNotifyId = 0; + + // A dummy actor that tracks the mouse or text cursor, based on the + // position and size set in setDummyCursorGeometry. + this.dummyCursor = new St.Widget({ width: 0, height: 0, opacity: 0 }); + this.uiGroup.add_actor(this.dummyCursor); + + let feedbackGroup = Meta.get_feedback_group_for_display(global.display); + global.stage.remove_actor(feedbackGroup); + this.uiGroup.add_actor(feedbackGroup); + + this._backgroundGroup = new Meta.BackgroundGroup(); + global.window_group.add_child(this._backgroundGroup); + global.window_group.set_child_below_sibling(this._backgroundGroup, null); + this._bgManagers = []; + + this._interfaceSettings = new Gio.Settings({ + schema_id: 'org.gnome.desktop.interface', + }); + + this._interfaceSettings.connect('changed::enable-hot-corners', + this._updateHotCorners.bind(this)); + + // Need to update struts on new workspaces when they are added + let workspaceManager = global.workspace_manager; + workspaceManager.connect('notify::n-workspaces', + this._queueUpdateRegions.bind(this)); + + let display = global.display; + display.connect('restacked', + this._windowsRestacked.bind(this)); + display.connect('in-fullscreen-changed', + this._updateFullscreen.bind(this)); + + let monitorManager = Meta.MonitorManager.get(); + monitorManager.connect('monitors-changed', + this._monitorsChanged.bind(this)); + this._monitorsChanged(); + } + + // This is called by Main after everything else is constructed + init() { + Main.sessionMode.connect('updated', this._sessionUpdated.bind(this)); + + this._loadBackground(); + } + + showOverview() { + this.overviewGroup.show(); + + this._inOverview = true; + this._updateVisibility(); + } + + hideOverview() { + this.overviewGroup.hide(); + + this._inOverview = false; + this._updateVisibility(); + } + + _sessionUpdated() { + this._updateVisibility(); + this._queueUpdateRegions(); + } + + _updateMonitors() { + let display = global.display; + + this.monitors = []; + let nMonitors = display.get_n_monitors(); + for (let i = 0; i < nMonitors; i++) { + this.monitors.push(new Monitor(i, + display.get_monitor_geometry(i), + display.get_monitor_scale(i))); + } + + if (nMonitors == 0) { + this.primaryIndex = this.bottomIndex = -1; + } else if (nMonitors == 1) { + this.primaryIndex = this.bottomIndex = 0; + } else { + // If there are monitors below the primary, then we need + // to split primary from bottom. + this.primaryIndex = this.bottomIndex = display.get_primary_monitor(); + for (let i = 0; i < this.monitors.length; i++) { + let monitor = this.monitors[i]; + if (this._isAboveOrBelowPrimary(monitor)) { + if (monitor.y > this.monitors[this.bottomIndex].y) + this.bottomIndex = i; + } + } + } + if (this.primaryIndex != -1) { + this.primaryMonitor = this.monitors[this.primaryIndex]; + this.bottomMonitor = this.monitors[this.bottomIndex]; + + if (this._pendingLoadBackground) { + this._loadBackground(); + this._pendingLoadBackground = false; + } + } else { + this.primaryMonitor = null; + this.bottomMonitor = null; + } + } + + _updateHotCorners() { + // destroy old hot corners + this.hotCorners.forEach(corner => { + if (corner) + corner.destroy(); + }); + this.hotCorners = []; + + if (!this._interfaceSettings.get_boolean('enable-hot-corners')) { + this.emit('hot-corners-changed'); + return; + } + + let size = this.panelBox.height; + + // build new hot corners + for (let i = 0; i < this.monitors.length; i++) { + let monitor = this.monitors[i]; + let cornerX = this._rtl ? monitor.x + monitor.width : monitor.x; + let cornerY = monitor.y; + + let haveTopLeftCorner = true; + + if (i != this.primaryIndex) { + // Check if we have a top left (right for RTL) corner. + // I.e. if there is no monitor directly above or to the left(right) + let besideX = this._rtl ? monitor.x + 1 : cornerX - 1; + let besideY = cornerY; + let aboveX = cornerX; + let aboveY = cornerY - 1; + + for (let j = 0; j < this.monitors.length; j++) { + if (i == j) + continue; + let otherMonitor = this.monitors[j]; + if (besideX >= otherMonitor.x && + besideX < otherMonitor.x + otherMonitor.width && + besideY >= otherMonitor.y && + besideY < otherMonitor.y + otherMonitor.height) { + haveTopLeftCorner = false; + break; + } + if (aboveX >= otherMonitor.x && + aboveX < otherMonitor.x + otherMonitor.width && + aboveY >= otherMonitor.y && + aboveY < otherMonitor.y + otherMonitor.height) { + haveTopLeftCorner = false; + break; + } + } + } + + if (haveTopLeftCorner) { + let corner = new HotCorner(this, monitor, cornerX, cornerY); + corner.setBarrierSize(size); + this.hotCorners.push(corner); + } else { + this.hotCorners.push(null); + } + } + + this.emit('hot-corners-changed'); + } + + _addBackgroundMenu(bgManager) { + BackgroundMenu.addBackgroundMenu(bgManager.backgroundActor, this); + } + + _createBackgroundManager(monitorIndex) { + let bgManager = new Background.BackgroundManager({ container: this._backgroundGroup, + layoutManager: this, + monitorIndex }); + + bgManager.connect('changed', this._addBackgroundMenu.bind(this)); + this._addBackgroundMenu(bgManager); + + return bgManager; + } + + _showSecondaryBackgrounds() { + for (let i = 0; i < this.monitors.length; i++) { + if (i != this.primaryIndex) { + let backgroundActor = this._bgManagers[i].backgroundActor; + backgroundActor.show(); + backgroundActor.opacity = 0; + backgroundActor.ease({ + opacity: 255, + duration: BACKGROUND_FADE_ANIMATION_TIME, + mode: Clutter.AnimationMode.EASE_OUT_QUAD, + }); + } + } + } + + _waitLoaded(bgManager) { + return new Promise(resolve => { + const id = bgManager.connect('loaded', () => { + bgManager.disconnect(id); + resolve(); + }); + }); + } + + _updateBackgrounds() { + for (let i = 0; i < this._bgManagers.length; i++) + this._bgManagers[i].destroy(); + + this._bgManagers = []; + + if (Main.sessionMode.isGreeter) + return Promise.resolve(); + + for (let i = 0; i < this.monitors.length; i++) { + let bgManager = this._createBackgroundManager(i); + this._bgManagers.push(bgManager); + + if (i != this.primaryIndex && this._startingUp) + bgManager.backgroundActor.hide(); + } + + return Promise.all(this._bgManagers.map(this._waitLoaded)); + } + + _updateKeyboardBox() { + this.keyboardBox.set_position(this.keyboardMonitor.x, + this.keyboardMonitor.y + this.keyboardMonitor.height); + this.keyboardBox.set_size(this.keyboardMonitor.width, -1); + } + + _updateBoxes() { + this.screenShieldGroup.set_position(0, 0); + this.screenShieldGroup.set_size(global.screen_width, global.screen_height); + + if (!this.primaryMonitor) + return; + + this.panelBox.set_position(this.primaryMonitor.x, this.primaryMonitor.y); + this.panelBox.set_size(this.primaryMonitor.width, -1); + + this.keyboardIndex = this.primaryIndex; + } + + _panelBoxChanged() { + this._updatePanelBarrier(); + + let size = this.panelBox.height; + this.hotCorners.forEach(corner => { + if (corner) + corner.setBarrierSize(size); + }); + } + + _updatePanelBarrier() { + if (this._rightPanelBarrier) { + this._rightPanelBarrier.destroy(); + this._rightPanelBarrier = null; + } + + if (!this.primaryMonitor) + return; + + if (this.panelBox.height) { + let primary = this.primaryMonitor; + + this._rightPanelBarrier = new Meta.Barrier({ display: global.display, + x1: primary.x + primary.width, y1: primary.y, + x2: primary.x + primary.width, y2: primary.y + this.panelBox.height, + directions: Meta.BarrierDirection.NEGATIVE_X }); + } + } + + _monitorsChanged() { + this._updateMonitors(); + this._updateBoxes(); + this._updateHotCorners(); + this._updateBackgrounds(); + this._updateFullscreen(); + this._updateVisibility(); + this._queueUpdateRegions(); + + this.emit('monitors-changed'); + } + + _isAboveOrBelowPrimary(monitor) { + let primary = this.monitors[this.primaryIndex]; + let monitorLeft = monitor.x, monitorRight = monitor.x + monitor.width; + let primaryLeft = primary.x, primaryRight = primary.x + primary.width; + + if ((monitorLeft >= primaryLeft && monitorLeft < primaryRight) || + (monitorRight > primaryLeft && monitorRight <= primaryRight) || + (primaryLeft >= monitorLeft && primaryLeft < monitorRight) || + (primaryRight > monitorLeft && primaryRight <= monitorRight)) + return true; + + return false; + } + + get currentMonitor() { + let index = global.display.get_current_monitor(); + return this.monitors[index]; + } + + get keyboardMonitor() { + return this.monitors[this.keyboardIndex]; + } + + get focusIndex() { + let i = Main.layoutManager.primaryIndex; + + if (global.stage.key_focus != null) + i = this.findIndexForActor(global.stage.key_focus); + else if (global.display.focus_window != null) + i = global.display.focus_window.get_monitor(); + return i; + } + + get focusMonitor() { + if (this.focusIndex < 0) + return null; + return this.monitors[this.focusIndex]; + } + + set keyboardIndex(v) { + this._keyboardIndex = v; + this._updateKeyboardBox(); + } + + get keyboardIndex() { + return this._keyboardIndex; + } + + _loadBackground() { + if (!this.primaryMonitor) { + this._pendingLoadBackground = true; + return; + } + this._systemBackground = new Background.SystemBackground(); + this._systemBackground.hide(); + + global.stage.insert_child_below(this._systemBackground, null); + + let constraint = new Clutter.BindConstraint({ source: global.stage, + coordinate: Clutter.BindCoordinate.ALL }); + this._systemBackground.add_constraint(constraint); + + let signalId = this._systemBackground.connect('loaded', () => { + this._systemBackground.disconnect(signalId); + + // We're mostly prepared for the startup animation + // now, but since a lot is going on asynchronously + // during startup, let's defer the startup animation + // until the event loop is uncontended and idle. + // This helps to prevent us from running the animation + // when the system is bogged down + const id = GLib.idle_add(GLib.PRIORITY_LOW, () => { + this._systemBackground.show(); + global.stage.show(); + this._prepareStartupAnimation(); + return GLib.SOURCE_REMOVE; + }); + GLib.Source.set_name_by_id(id, '[gnome-shell] Startup Animation'); + }); + } + + // Startup Animations + // + // We have two different animations, depending on whether we're a greeter + // or a normal session. + // + // In the greeter, we want to animate the panel from the top, and smoothly + // fade the login dialog on top of whatever plymouth left on screen which + // we get as a still frame background before drawing anything else. + // + // Here we just have the code to animate the panel, and fade up the background. + // The login dialog animation is handled by modalDialog.js + // + // When starting a normal user session, we want to grow it out of the middle + // of the screen. + + async _prepareStartupAnimation() { + // During the initial transition, add a simple actor to block all events, + // so they don't get delivered to X11 windows that have been transformed. + this._coverPane = new Clutter.Actor({ opacity: 0, + width: global.screen_width, + height: global.screen_height, + reactive: true }); + this.addChrome(this._coverPane); + + if (Meta.is_restart()) { + // On restart, we don't do an animation. Force an update of the + // regions immediately so that maximized windows restore to the + // right size taking struts into account. + this._updateRegions(); + } else if (Main.sessionMode.isGreeter) { + this.panelBox.translation_y = -this.panelBox.height; + } else { + // We need to force an update of the regions now before we scale + // the UI group to get the correct allocation for the struts. + this._updateRegions(); + + this.keyboardBox.hide(); + + let monitor = this.primaryMonitor; + let x = monitor.x + monitor.width / 2.0; + let y = monitor.y + monitor.height / 2.0; + + this.uiGroup.set_pivot_point(x / global.screen_width, + y / global.screen_height); + this.uiGroup.scale_x = this.uiGroup.scale_y = 0.75; + this.uiGroup.opacity = 0; + global.window_group.set_clip(monitor.x, monitor.y, monitor.width, monitor.height); + + await this._updateBackgrounds(); + } + + this.emit('startup-prepared'); + + this._startupAnimation(); + } + + _startupAnimation() { + if (Meta.is_restart()) + this._startupAnimationComplete(); + else if (Main.sessionMode.isGreeter) + this._startupAnimationGreeter(); + else + this._startupAnimationSession(); + } + + _startupAnimationGreeter() { + this.panelBox.ease({ + translation_y: 0, + duration: STARTUP_ANIMATION_TIME, + mode: Clutter.AnimationMode.EASE_OUT_QUAD, + onComplete: () => this._startupAnimationComplete(), + }); + } + + _startupAnimationSession() { + this.uiGroup.ease({ + scale_x: 1, + scale_y: 1, + opacity: 255, + duration: STARTUP_ANIMATION_TIME, + mode: Clutter.AnimationMode.EASE_OUT_QUAD, + onComplete: () => this._startupAnimationComplete(), + }); + } + + _startupAnimationComplete() { + this._coverPane.destroy(); + this._coverPane = null; + + this._systemBackground.destroy(); + this._systemBackground = null; + + this._startingUp = false; + + this.keyboardBox.show(); + + if (!Main.sessionMode.isGreeter) { + this._showSecondaryBackgrounds(); + global.window_group.remove_clip(); + } + + this._queueUpdateRegions(); + + this.emit('startup-complete'); + } + + showKeyboard() { + this.keyboardBox.show(); + this.keyboardBox.ease({ + translation_y: -this.keyboardBox.height, + opacity: 255, + duration: KEYBOARD_ANIMATION_TIME, + mode: Clutter.AnimationMode.EASE_OUT_QUAD, + onComplete: () => { + this._showKeyboardComplete(); + }, + }); + this.emit('keyboard-visible-changed', true); + } + + _showKeyboardComplete() { + // Poke Chrome to update the input shape; it doesn't notice + // anchor point changes + this._updateRegions(); + + this._keyboardHeightNotifyId = this.keyboardBox.connect('notify::height', () => { + this.keyboardBox.translation_y = -this.keyboardBox.height; + }); + } + + hideKeyboard(immediate) { + if (this._keyboardHeightNotifyId) { + this.keyboardBox.disconnect(this._keyboardHeightNotifyId); + this._keyboardHeightNotifyId = 0; + } + this.keyboardBox.ease({ + translation_y: 0, + opacity: 0, + duration: immediate ? 0 : KEYBOARD_ANIMATION_TIME, + mode: Clutter.AnimationMode.EASE_IN_QUAD, + onComplete: () => { + this._hideKeyboardComplete(); + }, + }); + + this.emit('keyboard-visible-changed', false); + } + + _hideKeyboardComplete() { + this.keyboardBox.hide(); + this._updateRegions(); + } + + // setDummyCursorGeometry: + // + // The cursor dummy is a standard widget commonly used for popup + // menus and box pointers to track, as the box pointer API only + // tracks actors. If you want to pop up a menu based on where the + // user clicked, or where the text cursor is, the cursor dummy + // is what you should use. Given that the menu should not track + // the actual mouse pointer as it moves, you need to call this + // function before you show the menu to ensure it is at the right + // position and has the right size. + setDummyCursorGeometry(x, y, w, h) { + this.dummyCursor.set_position(Math.round(x), Math.round(y)); + this.dummyCursor.set_size(Math.round(w), Math.round(h)); + } + + // addChrome: + // @actor: an actor to add to the chrome + // @params: (optional) additional params + // + // Adds @actor to the chrome, and (unless %affectsInputRegion in + // @params is %false) extends the input region to include it. + // Changes in @actor's size, position, and visibility will + // automatically result in appropriate changes to the input + // region. + // + // If %affectsStruts in @params is %true (and @actor is along a + // screen edge), then @actor's size and position will also affect + // the window manager struts. Changes to @actor's visibility will + // NOT affect whether or not the strut is present, however. + // + // If %trackFullscreen in @params is %true, the actor's visibility + // will be bound to the presence of fullscreen windows on the same + // monitor (it will be hidden whenever a fullscreen window is visible, + // and shown otherwise) + addChrome(actor, params) { + this.uiGroup.add_actor(actor); + if (this.uiGroup.contains(global.top_window_group)) + this.uiGroup.set_child_below_sibling(actor, global.top_window_group); + this._trackActor(actor, params); + } + + // addTopChrome: + // @actor: an actor to add to the chrome + // @params: (optional) additional params + // + // Like addChrome(), but adds @actor above all windows, including popups. + addTopChrome(actor, params) { + this.uiGroup.add_actor(actor); + this._trackActor(actor, params); + } + + // trackChrome: + // @actor: a descendant of the chrome to begin tracking + // @params: parameters describing how to track @actor + // + // Tells the chrome to track @actor. This can be used to extend the + // struts or input region to cover specific children. + // + // @params can have any of the same values as in addChrome(), + // though some possibilities don't make sense. By default, @actor has + // the same params as its chrome ancestor. + trackChrome(actor, params = {}) { + let ancestor = actor.get_parent(); + let index = this._findActor(ancestor); + while (ancestor && index == -1) { + ancestor = ancestor.get_parent(); + index = this._findActor(ancestor); + } + + let ancestorData = ancestor + ? this._trackedActors[index] + : defaultParams; + // We can't use Params.parse here because we want to drop + // the extra values like ancestorData.actor + for (let prop in defaultParams) { + if (!Object.prototype.hasOwnProperty.call(params, prop)) + params[prop] = ancestorData[prop]; + } + + this._trackActor(actor, params); + } + + // untrackChrome: + // @actor: an actor previously tracked via trackChrome() + // + // Undoes the effect of trackChrome() + untrackChrome(actor) { + this._untrackActor(actor); + } + + // removeChrome: + // @actor: a chrome actor + // + // Removes @actor from the chrome + removeChrome(actor) { + this.uiGroup.remove_actor(actor); + this._untrackActor(actor); + } + + _findActor(actor) { + for (let i = 0; i < this._trackedActors.length; i++) { + let actorData = this._trackedActors[i]; + if (actorData.actor == actor) + return i; + } + return -1; + } + + _trackActor(actor, params) { + if (this._findActor(actor) != -1) + throw new Error('trying to re-track existing chrome actor'); + + let actorData = Params.parse(params, defaultParams); + actorData.actor = actor; + actorData.visibleId = actor.connect('notify::visible', + this._queueUpdateRegions.bind(this)); + actorData.allocationId = actor.connect('notify::allocation', + this._queueUpdateRegions.bind(this)); + actorData.destroyId = actor.connect('destroy', + this._untrackActor.bind(this)); + // Note that destroying actor will unset its parent, so we don't + // need to connect to 'destroy' too. + + this._trackedActors.push(actorData); + this._updateActorVisibility(actorData); + this._queueUpdateRegions(); + } + + _untrackActor(actor) { + let i = this._findActor(actor); + + if (i == -1) + return; + let actorData = this._trackedActors[i]; + + this._trackedActors.splice(i, 1); + actor.disconnect(actorData.visibleId); + actor.disconnect(actorData.allocationId); + actor.disconnect(actorData.destroyId); + + this._queueUpdateRegions(); + } + + _updateActorVisibility(actorData) { + if (!actorData.trackFullscreen) + return; + + let monitor = this.findMonitorForActor(actorData.actor); + actorData.actor.visible = !(global.window_group.visible && + monitor && + monitor.inFullscreen); + } + + _updateVisibility() { + let windowsVisible = Main.sessionMode.hasWindows && !this._inOverview; + + global.window_group.visible = windowsVisible; + global.top_window_group.visible = windowsVisible; + + this._trackedActors.forEach(this._updateActorVisibility.bind(this)); + } + + getWorkAreaForMonitor(monitorIndex) { + // Assume that all workspaces will have the same + // struts and pick the first one. + let workspaceManager = global.workspace_manager; + let ws = workspaceManager.get_workspace_by_index(0); + return ws.get_work_area_for_monitor(monitorIndex); + } + + // This call guarantees that we return some monitor to simplify usage of it + // In practice all tracked actors should be visible on some monitor anyway + findIndexForActor(actor) { + let [x, y] = actor.get_transformed_position(); + let [w, h] = actor.get_transformed_size(); + let rect = new Meta.Rectangle({ x, y, width: w, height: h }); + return global.display.get_monitor_index_for_rect(rect); + } + + findMonitorForActor(actor) { + let index = this.findIndexForActor(actor); + if (index >= 0 && index < this.monitors.length) + return this.monitors[index]; + return null; + } + + _queueUpdateRegions() { + if (this._startingUp) + return; + + if (!this._updateRegionIdle) { + this._updateRegionIdle = Meta.later_add(Meta.LaterType.BEFORE_REDRAW, + this._updateRegions.bind(this)); + } + } + + _getWindowActorsForWorkspace(workspace) { + return global.get_window_actors().filter(actor => { + let win = actor.meta_window; + return win.located_on_workspace(workspace); + }); + } + + _updateFullscreen() { + this._updateVisibility(); + this._queueUpdateRegions(); + } + + _windowsRestacked() { + let changed = false; + + if (this._isPopupWindowVisible != global.top_window_group.get_children().some(isPopupMetaWindow)) + changed = true; + + if (changed) { + this._updateVisibility(); + this._queueUpdateRegions(); + } + } + + _updateRegions() { + if (this._updateRegionIdle) { + Meta.later_remove(this._updateRegionIdle); + delete this._updateRegionIdle; + } + + // No need to update when we have a modal. + if (Main.modalCount > 0) + return GLib.SOURCE_REMOVE; + + let rects = [], struts = [], i; + let isPopupMenuVisible = global.top_window_group.get_children().some(isPopupMetaWindow); + let wantsInputRegion = !isPopupMenuVisible; + + for (i = 0; i < this._trackedActors.length; i++) { + let actorData = this._trackedActors[i]; + if (!(actorData.affectsInputRegion && wantsInputRegion) && !actorData.affectsStruts) + continue; + + let [x, y] = actorData.actor.get_transformed_position(); + let [w, h] = actorData.actor.get_transformed_size(); + x = Math.round(x); + y = Math.round(y); + w = Math.round(w); + h = Math.round(h); + + if (actorData.affectsInputRegion && wantsInputRegion && actorData.actor.get_paint_visibility()) + rects.push(new Meta.Rectangle({ x, y, width: w, height: h })); + + let monitor = null; + if (actorData.affectsStruts) + monitor = this.findMonitorForActor(actorData.actor); + + if (monitor) { + // Limit struts to the size of the screen + let x1 = Math.max(x, 0); + let x2 = Math.min(x + w, global.screen_width); + let y1 = Math.max(y, 0); + let y2 = Math.min(y + h, global.screen_height); + + // Metacity wants to know what side of the monitor the + // strut is considered to be attached to. First, we find + // the monitor that contains the strut. If the actor is + // only touching one edge, or is touching the entire + // border of that monitor, then it's obvious which side + // to call it. If it's in a corner, we pick a side + // arbitrarily. If it doesn't touch any edges, or it + // spans the width/height across the middle of the + // screen, then we don't create a strut for it at all. + + let side; + if (x1 <= monitor.x && x2 >= monitor.x + monitor.width) { + if (y1 <= monitor.y) + side = Meta.Side.TOP; + else if (y2 >= monitor.y + monitor.height) + side = Meta.Side.BOTTOM; + else + continue; + } else if (y1 <= monitor.y && y2 >= monitor.y + monitor.height) { + if (x1 <= monitor.x) + side = Meta.Side.LEFT; + else if (x2 >= monitor.x + monitor.width) + side = Meta.Side.RIGHT; + else + continue; + } else if (x1 <= monitor.x) { + side = Meta.Side.LEFT; + } else if (y1 <= monitor.y) { + side = Meta.Side.TOP; + } else if (x2 >= monitor.x + monitor.width) { + side = Meta.Side.RIGHT; + } else if (y2 >= monitor.y + monitor.height) { + side = Meta.Side.BOTTOM; + } else { + continue; + } + + let strutRect = new Meta.Rectangle({ x: x1, y: y1, width: x2 - x1, height: y2 - y1 }); + let strut = new Meta.Strut({ rect: strutRect, side }); + struts.push(strut); + } + } + + global.set_stage_input_region(rects); + this._isPopupWindowVisible = isPopupMenuVisible; + + let workspaceManager = global.workspace_manager; + for (let w = 0; w < workspaceManager.n_workspaces; w++) { + let workspace = workspaceManager.get_workspace_by_index(w); + workspace.set_builtin_struts(struts); + } + + return GLib.SOURCE_REMOVE; + } + + modalEnded() { + // We don't update the stage input region while in a modal, + // so queue an update now. + this._queueUpdateRegions(); + } +}); + + +// HotCorner: +// +// This class manages a "hot corner" that can toggle switching to +// overview. +var HotCorner = GObject.registerClass( +class HotCorner extends Clutter.Actor { + _init(layoutManager, monitor, x, y) { + super._init(); + + // 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._monitor = monitor; + + this._x = x; + this._y = y; + + this._setupFallbackCornerIfNeeded(layoutManager); + + this._pressureBarrier = new PressureBarrier(HOT_CORNER_PRESSURE_THRESHOLD, + HOT_CORNER_PRESSURE_TIMEOUT, + Shell.ActionMode.NORMAL | + Shell.ActionMode.OVERVIEW); + this._pressureBarrier.connect('trigger', this._toggleOverview.bind(this)); + + let px = 0.0; + let py = 0.0; + if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL) { + px = 1.0; + py = 0.0; + } + + this._ripples = new Ripples.Ripples(px, py, 'ripple-box'); + this._ripples.addTo(layoutManager.uiGroup); + + this.connect('destroy', this._onDestroy.bind(this)); + } + + setBarrierSize(size) { + if (this._verticalBarrier) { + this._pressureBarrier.removeBarrier(this._verticalBarrier); + this._verticalBarrier.destroy(); + this._verticalBarrier = null; + } + + if (this._horizontalBarrier) { + this._pressureBarrier.removeBarrier(this._horizontalBarrier); + this._horizontalBarrier.destroy(); + this._horizontalBarrier = null; + } + + if (size > 0) { + if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL) { + this._verticalBarrier = new Meta.Barrier({ display: global.display, + x1: this._x, x2: this._x, y1: this._y, y2: this._y + size, + directions: Meta.BarrierDirection.NEGATIVE_X }); + this._horizontalBarrier = new Meta.Barrier({ display: global.display, + x1: this._x - size, x2: this._x, y1: this._y, y2: this._y, + directions: Meta.BarrierDirection.POSITIVE_Y }); + } else { + this._verticalBarrier = new Meta.Barrier({ display: global.display, + x1: this._x, x2: this._x, y1: this._y, y2: this._y + size, + directions: Meta.BarrierDirection.POSITIVE_X }); + this._horizontalBarrier = new Meta.Barrier({ display: global.display, + x1: this._x, x2: this._x + size, y1: this._y, y2: this._y, + directions: Meta.BarrierDirection.POSITIVE_Y }); + } + + this._pressureBarrier.addBarrier(this._verticalBarrier); + this._pressureBarrier.addBarrier(this._horizontalBarrier); + } + } + + _setupFallbackCornerIfNeeded(layoutManager) { + if (!global.display.supports_extended_barriers()) { + this.set({ + name: 'hot-corner-environs', + x: this._x, + y: this._y, + width: 3, + height: 3, + reactive: true, + }); + + this._corner = new Clutter.Actor({ name: 'hot-corner', + width: 1, + height: 1, + opacity: 0, + reactive: true }); + this._corner._delegate = this; + + this.add_child(this._corner); + layoutManager.addChrome(this); + + if (Clutter.get_default_text_direction() == Clutter.TextDirection.RTL) { + this._corner.set_position(this.width - this._corner.width, 0); + this.set_pivot_point(1.0, 0.0); + this.translation_x = -this.width; + } else { + this._corner.set_position(0, 0); + } + + this._corner.connect('enter-event', + this._onCornerEntered.bind(this)); + this._corner.connect('leave-event', + this._onCornerLeft.bind(this)); + } + } + + _onDestroy() { + this.setBarrierSize(0); + this._pressureBarrier.destroy(); + this._pressureBarrier = null; + + this._ripples.destroy(); + } + + _toggleOverview() { + if (this._monitor.inFullscreen && !Main.overview.visible) + return; + + if (Main.overview.shouldToggleByCornerOrButton()) { + Main.overview.toggle(); + if (Main.overview.animationInProgress) + this._ripples.playAnimation(this._x, this._y); + } + } + + handleDragOver(source, _actor, _x, _y, _time) { + if (source != Main.xdndHandler) + return DND.DragMotionResult.CONTINUE; + + this._toggleOverview(); + + return DND.DragMotionResult.CONTINUE; + } + + _onCornerEntered() { + if (!this._entered) { + this._entered = true; + this._toggleOverview(); + } + return Clutter.EVENT_PROPAGATE; + } + + _onCornerLeft(actor, event) { + if (event.get_related() != this) + this._entered = false; + // Consume event, otherwise this will confuse onEnvironsLeft + return Clutter.EVENT_STOP; + } + + vfunc_leave_event(crossingEvent) { + if (crossingEvent.related != this._corner) + this._entered = false; + return Clutter.EVENT_PROPAGATE; + } +}); + +var PressureBarrier = class PressureBarrier { + constructor(threshold, timeout, actionMode) { + this._threshold = threshold; + this._timeout = timeout; + this._actionMode = actionMode; + this._barriers = []; + this._eventFilter = null; + + this._isTriggered = false; + this._reset(); + } + + addBarrier(barrier) { + barrier._pressureHitId = barrier.connect('hit', this._onBarrierHit.bind(this)); + barrier._pressureLeftId = barrier.connect('left', this._onBarrierLeft.bind(this)); + + this._barriers.push(barrier); + } + + _disconnectBarrier(barrier) { + barrier.disconnect(barrier._pressureHitId); + barrier.disconnect(barrier._pressureLeftId); + } + + removeBarrier(barrier) { + this._disconnectBarrier(barrier); + this._barriers.splice(this._barriers.indexOf(barrier), 1); + } + + destroy() { + this._barriers.forEach(this._disconnectBarrier.bind(this)); + this._barriers = []; + } + + setEventFilter(filter) { + this._eventFilter = filter; + } + + _reset() { + this._barrierEvents = []; + this._currentPressure = 0; + this._lastTime = 0; + } + + _isHorizontal(barrier) { + return barrier.y1 == barrier.y2; + } + + _getDistanceAcrossBarrier(barrier, event) { + if (this._isHorizontal(barrier)) + return Math.abs(event.dy); + else + return Math.abs(event.dx); + } + + _getDistanceAlongBarrier(barrier, event) { + if (this._isHorizontal(barrier)) + return Math.abs(event.dx); + else + return Math.abs(event.dy); + } + + _trimBarrierEvents() { + // Events are guaranteed to be sorted in time order from + // oldest to newest, so just look for the first old event, + // and then chop events after that off. + let i = 0; + let threshold = this._lastTime - this._timeout; + + while (i < this._barrierEvents.length) { + let [time, distance_] = this._barrierEvents[i]; + if (time >= threshold) + break; + i++; + } + + let firstNewEvent = i; + + for (i = 0; i < firstNewEvent; i++) { + let [time_, distance] = this._barrierEvents[i]; + this._currentPressure -= distance; + } + + this._barrierEvents = this._barrierEvents.slice(firstNewEvent); + } + + _onBarrierLeft(barrier, _event) { + barrier._isHit = false; + if (this._barriers.every(b => !b._isHit)) { + this._reset(); + this._isTriggered = false; + } + } + + _trigger() { + this._isTriggered = true; + this.emit('trigger'); + this._reset(); + } + + _onBarrierHit(barrier, event) { + barrier._isHit = true; + + // If we've triggered the barrier, wait until the pointer has the + // left the barrier hitbox until we trigger it again. + if (this._isTriggered) + return; + + if (this._eventFilter && this._eventFilter(event)) + return; + + // Throw out all events not in the proper keybinding mode + if (!(this._actionMode & Main.actionMode)) + return; + + let slide = this._getDistanceAlongBarrier(barrier, event); + let distance = this._getDistanceAcrossBarrier(barrier, event); + + if (distance >= this._threshold) { + this._trigger(); + return; + } + + // Throw out events where the cursor is move more + // along the axis of the barrier than moving with + // the barrier. + if (slide > distance) + return; + + this._lastTime = event.time; + + this._trimBarrierEvents(); + distance = Math.min(15, distance); + + this._barrierEvents.push([event.time, distance]); + this._currentPressure += distance; + + if (this._currentPressure >= this._threshold) + this._trigger(); + } +}; +Signals.addSignalMethods(PressureBarrier.prototype); |