// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const { Clutter, Gio, GLib, GObject, Meta, Shell, St } = imports.gi;
const Mainloop = imports.mainloop;
const Signals = imports.signals;
const Background = imports.ui.background;
const DND = imports.ui.dnd;
const Main = imports.ui.main;
const Tweener = imports.ui.tweener;
const Workspace = imports.ui.workspace;
const WorkspacesView = imports.ui.workspacesView;
// The maximum size of a thumbnail is 1/10 the width and height of the screen
let MAX_THUMBNAIL_SCALE = 1/10.;
var RESCALE_ANIMATION_TIME = 0.2;
var SLIDE_ANIMATION_TIME = 0.2;
// When we create workspaces by dragging, we add a "cut" into the top and
// bottom of each workspace so that the user doesn't have to hit the
// placeholder exactly.
var WORKSPACE_CUT_SIZE = 10;
var WORKSPACE_KEEP_ALIVE_TIME = 100;
var MUTTER_SCHEMA = 'org.gnome.mutter';
/* A layout manager that requests size only for primary_actor, but then allocates
all using a fixed layout */
var PrimaryActorLayout = GObject.registerClass(
class PrimaryActorLayout extends Clutter.FixedLayout {
_init(primaryActor) {
super._init();
this.primaryActor = primaryActor;
}
vfunc_get_preferred_width(container, forHeight) {
return this.primaryActor.get_preferred_width(forHeight);
}
vfunc_get_preferred_height(container, forWidth) {
return this.primaryActor.get_preferred_height(forWidth);
}
});
var WindowClone = class {
constructor(realWindow) {
this.clone = new Clutter.Clone({ source: realWindow });
/* Can't use a Shell.GenericContainer because of DND and reparenting... */
this.actor = new Clutter.Actor({ layout_manager: new PrimaryActorLayout(this.clone),
reactive: true });
this.actor._delegate = this;
this.actor.add_child(this.clone);
this.realWindow = realWindow;
this.metaWindow = realWindow.meta_window;
this.clone._updateId = this.realWindow.connect('notify::position',
this._onPositionChanged.bind(this));
this.clone._destroyId = this.realWindow.connect('destroy', () => {
// First destroy the clone and then destroy everything
// This will ensure that we never see it in the _disconnectSignals loop
this.clone.destroy();
this.destroy();
});
this._onPositionChanged();
this.actor.connect('button-release-event',
this._onButtonRelease.bind(this));
this.actor.connect('touch-event',
this._onTouchEvent.bind(this));
this.actor.connect('destroy', this._onDestroy.bind(this));
this._draggable = DND.makeDraggable(this.actor,
{ restoreOnSuccess: true,
dragActorMaxSize: Workspace.WINDOW_DND_SIZE,
dragActorOpacity: Workspace.DRAGGING_WINDOW_OPACITY });
this._draggable.connect('drag-begin', this._onDragBegin.bind(this));
this._draggable.connect('drag-cancelled', this._onDragCancelled.bind(this));
this._draggable.connect('drag-end', this._onDragEnd.bind(this));
this.inDrag = false;
let iter = win => {
let actor = win.get_compositor_private();
if (!actor)
return false;
if (!win.is_attached_dialog())
return false;
this._doAddAttachedDialog(win, actor);
win.foreach_transient(iter);
return true;
};
this.metaWindow.foreach_transient(iter);
}
// Find the actor just below us, respecting reparenting done
// by DND code
getActualStackAbove() {
if (this._stackAbove == null)
return null;
if (this.inDrag) {
if (this._stackAbove._delegate)
return this._stackAbove._delegate.getActualStackAbove();
else
return null;
} else {
return this._stackAbove;
}
}
setStackAbove(actor) {
this._stackAbove = actor;
// Don't apply the new stacking now, it will be applied
// when dragging ends and window are stacked again
if (actor.inDrag)
return;
let actualAbove = this.getActualStackAbove();
if (actualAbove == null)
this.actor.lower_bottom();
else
this.actor.raise(actualAbove);
}
destroy() {
this.actor.destroy();
}
addAttachedDialog(win) {
this._doAddAttachedDialog(win, win.get_compositor_private());
}
_doAddAttachedDialog(metaDialog, realDialog) {
let clone = new Clutter.Clone({ source: realDialog });
this._updateDialogPosition(realDialog, clone);
clone._updateId = realDialog.connect('notify::position', dialog => {
this._updateDialogPosition(dialog, clone);
});
clone._destroyId = realDialog.connect('destroy', () => {
clone.destroy();
});
this.actor.add_child(clone);
}
_updateDialogPosition(realDialog, cloneDialog) {
let metaDialog = realDialog.meta_window;
let dialogRect = metaDialog.get_frame_rect();
let rect = this.metaWindow.get_frame_rect();
cloneDialog.set_position(dialogRect.x - rect.x, dialogRect.y - rect.y);
}
_onPositionChanged() {
this.actor.set_position(this.realWindow.x, this.realWindow.y);
}
_disconnectSignals() {
this.actor.get_children().forEach(child => {
let realWindow = child.source;
realWindow.disconnect(child._updateId);
realWindow.disconnect(child._destroyId);
});
}
_onDestroy() {
this._disconnectSignals();
this.actor._delegate = null;
if (this.inDrag) {
this.emit('drag-end');
this.inDrag = false;
}
this.disconnectAll();
}
_onButtonRelease(actor, event) {
this.emit('selected', event.get_time());
return Clutter.EVENT_STOP;
}
_onTouchEvent(actor, event) {
if (event.type() != Clutter.EventType.TOUCH_END ||
!global.display.is_pointer_emulating_sequence(event.get_event_sequence()))
return Clutter.EVENT_PROPAGATE;
this.emit('selected', event.get_time());
return Clutter.EVENT_STOP;
}
_onDragBegin(draggable, time) {
this.inDrag = true;
this.emit('drag-begin');
}
_onDragCancelled(draggable, time) {
this.emit('drag-cancelled');
}
_onDragEnd(draggable, time, snapback) {
this.inDrag = false;
// We may not have a parent if DnD completed successfully, in
// which case our clone will shortly be destroyed and replaced
// with a new one on the target workspace.
if (this.actor.get_parent() != null) {
if (this._stackAbove == null)
this.actor.lower_bottom();
else
this.actor.raise(this._stackAbove);
}
this.emit('drag-end');
}
};
Signals.addSignalMethods(WindowClone.prototype);
var ThumbnailState = {
NEW : 0,
ANIMATING_IN : 1,
NORMAL: 2,
REMOVING : 3,
ANIMATING_OUT : 4,
ANIMATED_OUT : 5,
COLLAPSING : 6,
DESTROYED : 7
};
/**
* @metaWorkspace: a #Meta.Workspace
*/
var WorkspaceThumbnail = class {
constructor(metaWorkspace) {
this.metaWorkspace = metaWorkspace;
this.monitorIndex = Main.layoutManager.primaryIndex;
this._removed = false;
this.actor = new St.Widget({ clip_to_allocation: true,
style_class: 'workspace-thumbnail' });
this.actor._delegate = this;
this._contents = new Clutter.Actor();
this.actor.add_child(this._contents);
this.actor.connect('destroy', this._onDestroy.bind(this));
this._createBackground();
let workArea = Main.layoutManager.getWorkAreaForMonitor(this.monitorIndex);
this.setPorthole(workArea.x, workArea.y, workArea.width, workArea.height);
let windows = global.get_window_actors().filter(actor => {
let win = actor.meta_window;
return win.located_on_workspace(metaWorkspace);
});
// Create clones for windows that should be visible in the Overview
this._windows = [];
this._allWindows = [];
this._minimizedChangedIds = [];
for (let i = 0; i < windows.length; i++) {
let minimizedChangedId =
windows[i].meta_window.connect('notify::minimized',
this._updateMinimized.bind(this));
this._allWindows.push(windows[i].meta_window);
this._minimizedChangedIds.push(minimizedChangedId);
if (this._isMyWindow(windows[i]) && this._isOverviewWindow(windows[i])) {
this._addWindowClone(windows[i]);
}
}
// Track window changes
this._windowAddedId = this.metaWorkspace.connect('window-added',
this._windowAdded.bind(this));
this._windowRemovedId = this.metaWorkspace.connect('window-removed',
this._windowRemoved.bind(this));
this._windowEnteredMonitorId = global.display.connect('window-entered-monitor',
this._windowEnteredMonitor.bind(this));
this._windowLeftMonitorId = global.display.connect('window-left-monitor',
this._windowLeftMonitor.bind(this));
this.state = ThumbnailState.NORMAL;
this._slidePosition = 0; // Fully slid in
this._collapseFraction = 0; // Not collapsed
}
_createBackground() {
this._bgManager = new Background.BackgroundManager({ monitorIndex: Main.layoutManager.primaryIndex,
container: this._contents,
vignette: false });
}
setPorthole(x, y, width, height) {
this.actor.set_size(width, height);
this._contents.set_position(-x, -y);
}
_lookupIndex(metaWindow) {
return this._windows.findIndex(w => w.metaWindow == metaWindow);
}
syncStacking(stackIndices) {
this._windows.sort((a, b) => {
let indexA = stackIndices[a.metaWindow.get_stable_sequence()];
let indexB = stackIndices[b.metaWindow.get_stable_sequence()];
return indexA - indexB;
});
for (let i = 0; i < this._windows.length; i++) {
let clone = this._windows[i];
let metaWindow = clone.metaWindow;
if (i == 0) {
clone.setStackAbove(this._bgManager.backgroundActor);
} else {
let previousClone = this._windows[i - 1];
clone.setStackAbove(previousClone.actor);
}
}
}
set slidePosition(slidePosition) {
this._slidePosition = slidePosition;
this.actor.queue_relayout();
}
get slidePosition() {
return this._slidePosition;
}
set collapseFraction(collapseFraction) {
this._collapseFraction = collapseFraction;
this.actor.queue_relayout();
}
get collapseFraction() {
return this._collapseFraction;
}
_doRemoveWindow(metaWin) {
let clone = this._removeWindowClone(metaWin);
if (clone)
clone.destroy();
}
_doAddWindow(metaWin) {
if (this._removed)
return;
let win = metaWin.get_compositor_private();
if (!win) {
// Newly-created windows are added to a workspace before
// the compositor finds out about them...
let id = Mainloop.idle_add(() => {
if (!this._removed &&
metaWin.get_compositor_private() &&
metaWin.get_workspace() == this.metaWorkspace)
this._doAddWindow(metaWin);
return GLib.SOURCE_REMOVE;
});
GLib.Source.set_name_by_id(id, '[gnome-shell] this._doAddWindow');
return;
}
if (this._allWindows.indexOf(metaWin) == -1) {
let minimizedChangedId = metaWin.connect('notify::minimized',
this._updateMinimized.bind(this));
this._allWindows.push(metaWin);
this._minimizedChangedIds.push(minimizedChangedId);
}
// We might have the window in our list already if it was on all workspaces and
// now was moved to this workspace
if (this._lookupIndex(metaWin) != -1)
return;
if (!this._isMyWindow(win))
return;
if (this._isOverviewWindow(win)) {
this._addWindowClone(win);
} else if (metaWin.is_attached_dialog()) {
let parent = metaWin.get_transient_for();
while (parent.is_attached_dialog())
parent = parent.get_transient_for();
let idx = this._lookupIndex(parent);
if (idx < 0) {
// parent was not created yet, it will take care
// of the dialog when created
return;
}
let clone = this._windows[idx];
clone.addAttachedDialog(metaWin);
}
}
_windowAdded(metaWorkspace, metaWin) {
this._doAddWindow(metaWin);
}
_windowRemoved(metaWorkspace, metaWin) {
let index = this._allWindows.indexOf(metaWin);
if (index != -1) {
metaWin.disconnect(this._minimizedChangedIds[index]);
this._allWindows.splice(index, 1);
this._minimizedChangedIds.splice(index, 1);
}
this._doRemoveWindow(metaWin);
}
_windowEnteredMonitor(metaDisplay, monitorIndex, metaWin) {
if (monitorIndex == this.monitorIndex) {
this._doAddWindow(metaWin);
}
}
_windowLeftMonitor(metaDisplay, monitorIndex, metaWin) {
if (monitorIndex == this.monitorIndex) {
this._doRemoveWindow(metaWin);
}
}
_updateMinimized(metaWin) {
if (metaWin.minimized)
this._doRemoveWindow(metaWin);
else
this._doAddWindow(metaWin);
}
destroy() {
if (this.actor)
this.actor.destroy();
}
workspaceRemoved() {
if (this._removed)
return;
this._removed = true;
this.metaWorkspace.disconnect(this._windowAddedId);
this.metaWorkspace.disconnect(this._windowRemovedId);
global.display.disconnect(this._windowEnteredMonitorId);
global.display.disconnect(this._windowLeftMonitorId);
for (let i = 0; i < this._allWindows.length; i++)
this._allWindows[i].disconnect(this._minimizedChangedIds[i]);
}
_onDestroy(actor) {
this.workspaceRemoved();
if (this._bgManager) {
this._bgManager.destroy();
this._bgManager = null;
}
this._windows = [];
this.actor = null;
}
// Tests if @actor belongs to this workspace and monitor
_isMyWindow(actor) {
let win = actor.meta_window;
return win.located_on_workspace(this.metaWorkspace) &&
(win.get_monitor() == this.monitorIndex);
}
// Tests if @win should be shown in the Overview
_isOverviewWindow(win) {
return !win.get_meta_window().skip_taskbar &&
win.get_meta_window().showing_on_its_workspace();
}
// Create a clone of a (non-desktop) window and add it to the window list
_addWindowClone(win) {
let clone = new WindowClone(win);
clone.connect('selected', (clone, time) => {
this.activate(time);
});
clone.connect('drag-begin', () => {
Main.overview.beginWindowDrag(clone.metaWindow);
});
clone.connect('drag-cancelled', () => {
Main.overview.cancelledWindowDrag(clone.metaWindow);
});
clone.connect('drag-end', () => {
Main.overview.endWindowDrag(clone.metaWindow);
});
clone.actor.connect('destroy', () => {
this._removeWindowClone(clone.metaWindow);
});
this._contents.add_actor(clone.actor);
if (this._windows.length == 0)
clone.setStackAbove(this._bgManager.backgroundActor);
else
clone.setStackAbove(this._windows[this._windows.length - 1].actor);
this._windows.push(clone);
return clone;
}
_removeWindowClone(metaWin) {
// find the position of the window in our list
let index = this._lookupIndex(metaWin);
if (index == -1)
return null;
return this._windows.splice(index, 1).pop();
}
activate(time) {
if (this.state > ThumbnailState.NORMAL)
return;
// a click on the already current workspace should go back to the main view
let workspaceManager = global.workspace_manager;
let activeWorkspace = workspaceManager.get_active_workspace();
if (this.metaWorkspace == activeWorkspace)
Main.overview.hide();
else
this.metaWorkspace.activate(time);
}
// Draggable target interface used only by ThumbnailsBox
handleDragOverInternal(source, time) {
if (source == Main.xdndHandler) {
this.metaWorkspace.activate(time);
return DND.DragMotionResult.CONTINUE;
}
if (this.state > ThumbnailState.NORMAL)
return DND.DragMotionResult.CONTINUE;
if (source.realWindow && !this._isMyWindow(source.realWindow))
return DND.DragMotionResult.MOVE_DROP;
if (source.shellWorkspaceLaunch)
return DND.DragMotionResult.COPY_DROP;
return DND.DragMotionResult.CONTINUE;
}
acceptDropInternal(source, time) {
if (this.state > ThumbnailState.NORMAL)
return false;
if (source.realWindow) {
let win = source.realWindow;
if (this._isMyWindow(win))
return false;
let metaWindow = win.get_meta_window();
// We need to move the window before changing the workspace, because
// the move itself could cause a workspace change if the window enters
// the primary monitor
if (metaWindow.get_monitor() != this.monitorIndex)
metaWindow.move_to_monitor(this.monitorIndex);
metaWindow.change_workspace_by_index(this.metaWorkspace.index(), false);
return true;
} else if (source.shellWorkspaceLaunch) {
source.shellWorkspaceLaunch({ workspace: this.metaWorkspace ? this.metaWorkspace.index() : -1,
timestamp: time });
return true;
}
return false;
}
};
Signals.addSignalMethods(WorkspaceThumbnail.prototype);
var ThumbnailsBox = GObject.registerClass(
class ThumbnailsBox extends St.Widget {
_init() {
super._init({ reactive: true,
style_class: 'workspace-thumbnails',
request_mode: Clutter.RequestMode.WIDTH_FOR_HEIGHT });
this.actor = this;
this.actor._delegate = this;
let indicator = new St.Bin({ style_class: 'workspace-thumbnail-indicator' });
// We don't want the indicator to affect drag-and-drop
Shell.util_set_hidden_from_pick(indicator, true);
this._indicator = indicator;
this.add_actor(indicator);
// The porthole is the part of the screen we're showing in the thumbnails
this._porthole = { width: global.stage.width, height: global.stage.height,
x: global.stage.x, y: global.stage.y };
this._dropWorkspace = -1;
this._dropPlaceholderPos = -1;
this._dropPlaceholder = new St.Bin({ style_class: 'placeholder' });
this.add_actor(this._dropPlaceholder);
this._spliceIndex = -1;
this._targetScale = 0;
this._scale = 0;
this._pendingScaleUpdate = false;
this._stateUpdateQueued = false;
this._animatingIndicator = false;
this._indicatorY = 0; // only used when _animatingIndicator is true
this._stateCounts = {};
for (let key in ThumbnailState)
this._stateCounts[ThumbnailState[key]] = 0;
this._thumbnails = [];
this.connect('button-press-event', () => Clutter.EVENT_STOP);
this.connect('button-release-event', this._onButtonRelease.bind(this));
this.connect('touch-event', this._onTouchEvent.bind(this));
Main.overview.connect('showing',
this._createThumbnails.bind(this));
Main.overview.connect('hidden',
this._destroyThumbnails.bind(this));
Main.overview.connect('item-drag-begin',
this._onDragBegin.bind(this));
Main.overview.connect('item-drag-end',
this._onDragEnd.bind(this));
Main.overview.connect('item-drag-cancelled',
this._onDragCancelled.bind(this));
Main.overview.connect('window-drag-begin',
this._onDragBegin.bind(this));
Main.overview.connect('window-drag-end',
this._onDragEnd.bind(this));
Main.overview.connect('window-drag-cancelled',
this._onDragCancelled.bind(this));
this._settings = new Gio.Settings({ schema_id: MUTTER_SCHEMA });
this._settings.connect('changed::dynamic-workspaces',
this._updateSwitcherVisibility.bind(this));
Main.layoutManager.connect('monitors-changed', () => {
this._destroyThumbnails();
if (Main.overview.visible)
this._createThumbnails();
});
global.display.connect('workareas-changed',
this._updatePorthole.bind(this));
this._switchWorkspaceNotifyId = 0;
this._nWorkspacesNotifyId = 0;
this._syncStackingId = 0;
this._workareasChangedId = 0;
}
_updateSwitcherVisibility() {
let workspaceManager = global.workspace_manager;
this.visible =
this._settings.get_boolean('dynamic-workspaces') ||
workspaceManager.n_workspaces > 1;
}
_activateThumbnailAtPoint(stageX, stageY, time) {
let [r, x, y] = this.transform_stage_point(stageX, stageY);
for (let i = 0; i < this._thumbnails.length; i++) {
let thumbnail = this._thumbnails[i]
let [w, h] = thumbnail.actor.get_transformed_size();
if (y >= thumbnail.actor.y && y <= thumbnail.actor.y + h) {
thumbnail.activate(time);
break;
}
}
}
_onButtonRelease(actor, event) {
let [stageX, stageY] = event.get_coords();
this._activateThumbnailAtPoint(stageX, stageY, event.get_time());
return Clutter.EVENT_STOP;
}
_onTouchEvent(actor, event) {
if (event.type() == Clutter.EventType.TOUCH_END &&
global.display.is_pointer_emulating_sequence(event.get_event_sequence())) {
let [stageX, stageY] = event.get_coords();
this._activateThumbnailAtPoint(stageX, stageY, event.get_time());
}
return Clutter.EVENT_STOP;
}
_onDragBegin() {
this._dragCancelled = false;
this._dragMonitor = {
dragMotion: this._onDragMotion.bind(this)
};
DND.addDragMonitor(this._dragMonitor);
}
_onDragEnd() {
if (this._dragCancelled)
return;
this._endDrag();
}
_onDragCancelled() {
this._dragCancelled = true;
this._endDrag();
}
_endDrag() {
this._clearDragPlaceholder();
DND.removeDragMonitor(this._dragMonitor);
}
_onDragMotion(dragEvent) {
if (!this.contains(dragEvent.targetActor))
this._onLeave();
return DND.DragMotionResult.CONTINUE;
}
_onLeave() {
this._clearDragPlaceholder();
}
_clearDragPlaceholder() {
if (this._dropPlaceholderPos == -1)
return;
this._dropPlaceholderPos = -1;
this.queue_relayout();
}
// Draggable target interface
handleDragOver(source, actor, x, y, time) {
if (!source.realWindow && !source.shellWorkspaceLaunch && source != Main.xdndHandler)
return DND.DragMotionResult.CONTINUE;
let canCreateWorkspaces = Meta.prefs_get_dynamic_workspaces();
let spacing = this.get_theme_node().get_length('spacing');
this._dropWorkspace = -1;
let placeholderPos = -1;
let targetBase;
if (this._dropPlaceholderPos == 0)
targetBase = this._dropPlaceholder.y;
else
targetBase = this._thumbnails[0].actor.y;
let targetTop = targetBase - spacing - WORKSPACE_CUT_SIZE;
let length = this._thumbnails.length;
for (let i = 0; i < length; i ++) {
// Allow the reorder target to have a 10px "cut" into
// each side of the thumbnail, to make dragging onto the
// placeholder easier
let [w, h] = this._thumbnails[i].actor.get_transformed_size();
let targetBottom = targetBase + WORKSPACE_CUT_SIZE;
let nextTargetBase = targetBase + h + spacing;
let nextTargetTop = nextTargetBase - spacing - ((i == length - 1) ? 0: WORKSPACE_CUT_SIZE);
// Expand the target to include the placeholder, if it exists.
if (i == this._dropPlaceholderPos)
targetBottom += this._dropPlaceholder.get_height();
if (y > targetTop && y <= targetBottom && source != Main.xdndHandler && canCreateWorkspaces) {
placeholderPos = i;
break;
} else if (y > targetBottom && y <= nextTargetTop) {
this._dropWorkspace = i;
break
}
targetBase = nextTargetBase;
targetTop = nextTargetTop;
}
if (this._dropPlaceholderPos != placeholderPos) {
this._dropPlaceholderPos = placeholderPos;
this.queue_relayout();
}
if (this._dropWorkspace != -1)
return this._thumbnails[this._dropWorkspace].handleDragOverInternal(source, time);
else if (this._dropPlaceholderPos != -1)
return source.realWindow ? DND.DragMotionResult.MOVE_DROP : DND.DragMotionResult.COPY_DROP;
else
return DND.DragMotionResult.CONTINUE;
}
acceptDrop(source, actor, x, y, time) {
if (this._dropWorkspace != -1) {
return this._thumbnails[this._dropWorkspace].acceptDropInternal(source, time);
} else if (this._dropPlaceholderPos != -1) {
if (!source.realWindow && !source.shellWorkspaceLaunch)
return false;
let isWindow = !!source.realWindow;
let newWorkspaceIndex;
[newWorkspaceIndex, this._dropPlaceholderPos] = [this._dropPlaceholderPos, -1];
this._spliceIndex = newWorkspaceIndex;
Main.wm.insertWorkspace(newWorkspaceIndex);
if (isWindow) {
// Move the window to our monitor first if necessary.
let thumbMonitor = this._thumbnails[newWorkspaceIndex].monitorIndex;
if (source.metaWindow.get_monitor() != thumbMonitor)
source.metaWindow.move_to_monitor(thumbMonitor);
source.metaWindow.change_workspace_by_index(newWorkspaceIndex, true);
} else if (source.shellWorkspaceLaunch) {
source.shellWorkspaceLaunch({ workspace: newWorkspaceIndex,
timestamp: time });
// This new workspace will be automatically removed if the application fails
// to open its first window within some time, as tracked by Shell.WindowTracker.
// Here, we only add a very brief timeout to avoid the _immediate_ removal of the
// workspace while we wait for the startup sequence to load.
let workspaceManager = global.workspace_manager;
Main.wm.keepWorkspaceAlive(workspaceManager.get_workspace_by_index(newWorkspaceIndex),
WORKSPACE_KEEP_ALIVE_TIME);
}
// Start the animation on the workspace (which is actually
// an old one which just became empty)
let thumbnail = this._thumbnails[newWorkspaceIndex];
this._setThumbnailState(thumbnail, ThumbnailState.NEW);
thumbnail.slidePosition = 1;
this._queueUpdateStates();
return true;
} else {
return false;
}
}
_createThumbnails() {
let workspaceManager = global.workspace_manager;
this._switchWorkspaceNotifyId =
global.window_manager.connect('switch-workspace',
this._activeWorkspaceChanged.bind(this));
this._nWorkspacesNotifyId =
workspaceManager.connect('notify::n-workspaces',
this._workspacesChanged.bind(this));
this._syncStackingId =
Main.overview.connect('windows-restacked',
this._syncStacking.bind(this));
this._targetScale = 0;
this._scale = 0;
this._pendingScaleUpdate = false;
this._stateUpdateQueued = false;
this._stateCounts = {};
for (let key in ThumbnailState)
this._stateCounts[ThumbnailState[key]] = 0;
this.addThumbnails(0, workspaceManager.n_workspaces);
this._updateSwitcherVisibility();
}
_destroyThumbnails() {
if (this._thumbnails.length == 0)
return;
if (this._switchWorkspaceNotifyId > 0) {
global.window_manager.disconnect(this._switchWorkspaceNotifyId);
this._switchWorkspaceNotifyId = 0;
}
if (this._nWorkspacesNotifyId > 0) {
let workspaceManager = global.workspace_manager;
workspaceManager.disconnect(this._nWorkspacesNotifyId);
this._nWorkspacesNotifyId = 0;
}
if (this._syncStackingId > 0) {
Main.overview.disconnect(this._syncStackingId);
this._syncStackingId = 0;
}
for (let w = 0; w < this._thumbnails.length; w++)
this._thumbnails[w].destroy();
this._thumbnails = [];
}
_workspacesChanged() {
let validThumbnails =
this._thumbnails.filter(t => t.state <= ThumbnailState.NORMAL);
let workspaceManager = global.workspace_manager;
let oldNumWorkspaces = validThumbnails.length;
let newNumWorkspaces = workspaceManager.n_workspaces;
let active = workspaceManager.get_active_workspace_index();
if (newNumWorkspaces > oldNumWorkspaces) {
this.addThumbnails(oldNumWorkspaces, newNumWorkspaces - oldNumWorkspaces);
} else {
let removedIndex;
let removedNum = oldNumWorkspaces - newNumWorkspaces;
for (let w = 0; w < oldNumWorkspaces; w++) {
let metaWorkspace = workspaceManager.get_workspace_by_index(w);
if (this._thumbnails[w].metaWorkspace != metaWorkspace) {
removedIndex = w;
break;
}
}
this.removeThumbnails(removedIndex, removedNum);
}
this._updateSwitcherVisibility();
}
addThumbnails(start, count) {
let workspaceManager = global.workspace_manager;
for (let k = start; k < start + count; k++) {
let metaWorkspace = workspaceManager.get_workspace_by_index(k);
let thumbnail = new WorkspaceThumbnail(metaWorkspace);
thumbnail.setPorthole(this._porthole.x, this._porthole.y,
this._porthole.width, this._porthole.height);
this._thumbnails.push(thumbnail);
this.add_actor(thumbnail.actor);
if (start > 0 && this._spliceIndex == -1) {
// not the initial fill, and not splicing via DND
thumbnail.state = ThumbnailState.NEW;
thumbnail.slidePosition = 1; // start slid out
this._haveNewThumbnails = true;
} else {
thumbnail.state = ThumbnailState.NORMAL;
}
this._stateCounts[thumbnail.state]++;
}
this._queueUpdateStates();
// The thumbnails indicator actually needs to be on top of the thumbnails
this._indicator.raise_top();
// Clear the splice index, we got the message
this._spliceIndex = -1;
}
removeThumbnails(start, count) {
let currentPos = 0;
for (let k = 0; k < this._thumbnails.length; k++) {
let thumbnail = this._thumbnails[k];
if (thumbnail.state > ThumbnailState.NORMAL)
continue;
if (currentPos >= start && currentPos < start + count) {
thumbnail.workspaceRemoved();
this._setThumbnailState(thumbnail, ThumbnailState.REMOVING);
}
currentPos++;
}
this._queueUpdateStates();
}
_syncStacking(overview, stackIndices) {
for (let i = 0; i < this._thumbnails.length; i++)
this._thumbnails[i].syncStacking(stackIndices);
}
set scale(scale) {
this._scale = scale;
this.queue_relayout();
}
get scale() {
return this._scale;
}
set indicatorY(indicatorY) {
this._indicatorY = indicatorY;
this.queue_relayout();
}
get indicatorY() {
return this._indicatorY;
}
_setThumbnailState(thumbnail, state) {
this._stateCounts[thumbnail.state]--;
thumbnail.state = state;
this._stateCounts[thumbnail.state]++;
}
_iterateStateThumbnails(state, callback) {
if (this._stateCounts[state] == 0)
return;
for (let i = 0; i < this._thumbnails.length; i++) {
if (this._thumbnails[i].state == state)
callback.call(this, this._thumbnails[i]);
}
}
_tweenScale() {
Tweener.addTween(this,
{ scale: this._targetScale,
time: RESCALE_ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: this._queueUpdateStates,
onCompleteScope: this });
}
_updateStates() {
this._stateUpdateQueued = false;
// If we are animating the indicator, wait
if (this._animatingIndicator)
return;
// Then slide out any thumbnails that have been destroyed
this._iterateStateThumbnails(ThumbnailState.REMOVING, thumbnail => {
this._setThumbnailState(thumbnail, ThumbnailState.ANIMATING_OUT);
Tweener.addTween(thumbnail,
{ slidePosition: 1,
time: SLIDE_ANIMATION_TIME,
transition: 'linear',
onComplete: () => {
this._setThumbnailState(thumbnail, ThumbnailState.ANIMATED_OUT);
this._queueUpdateStates();
}
});
});
// As long as things are sliding out, don't proceed
if (this._stateCounts[ThumbnailState.ANIMATING_OUT] > 0)
return;
// Once that's complete, we can start scaling to the new size and collapse any removed thumbnails
this._iterateStateThumbnails(ThumbnailState.ANIMATED_OUT, thumbnail => {
this._setThumbnailState(thumbnail, ThumbnailState.COLLAPSING);
Tweener.addTween(thumbnail,
{ collapseFraction: 1,
time: RESCALE_ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: () => {
this._stateCounts[thumbnail.state]--;
thumbnail.state = ThumbnailState.DESTROYED;
let index = this._thumbnails.indexOf(thumbnail);
this._thumbnails.splice(index, 1);
thumbnail.destroy();
this._queueUpdateStates();
}
});
});
if (this._pendingScaleUpdate) {
this._tweenScale();
this._pendingScaleUpdate = false;
}
// Wait until that's done
if (this._scale != this._targetScale || this._stateCounts[ThumbnailState.COLLAPSING] > 0)
return;
// And then slide in any new thumbnails
this._iterateStateThumbnails(ThumbnailState.NEW, thumbnail => {
this._setThumbnailState(thumbnail, ThumbnailState.ANIMATING_IN);
Tweener.addTween(thumbnail,
{ slidePosition: 0,
time: SLIDE_ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: () => {
this._setThumbnailState(thumbnail, ThumbnailState.NORMAL);
}
});
});
}
_queueUpdateStates() {
if (this._stateUpdateQueued)
return;
Meta.later_add(Meta.LaterType.BEFORE_REDRAW,
this._updateStates.bind(this));
this._stateUpdateQueued = true;
}
vfunc_get_preferred_height(forWidth) {
// Note that for getPreferredWidth/Height we cheat a bit and skip propagating
// the size request to our children because we know how big they are and know
// that the actors aren't depending on the virtual functions being called.
let workspaceManager = global.workspace_manager;
let themeNode = this.get_theme_node();
let spacing = themeNode.get_length('spacing');
let nWorkspaces = workspaceManager.n_workspaces;
let totalSpacing = (nWorkspaces - 1) * spacing;
let naturalHeight = totalSpacing + nWorkspaces * this._porthole.height * MAX_THUMBNAIL_SCALE;
return themeNode.adjust_preferred_height(totalSpacing, naturalHeight);
}
vfunc_get_preferred_width(forHeight) {
let workspaceManager = global.workspace_manager;
let themeNode = this.get_theme_node();
forHeight = themeNode.adjust_for_height(forHeight);
let spacing = themeNode.get_length('spacing');
let nWorkspaces = workspaceManager.n_workspaces;
let totalSpacing = (nWorkspaces - 1) * spacing;
let avail = forHeight - totalSpacing;
let scale = (avail / nWorkspaces) / this._porthole.height;
scale = Math.min(scale, MAX_THUMBNAIL_SCALE);
let width = Math.round(this._porthole.width * scale);
return themeNode.adjust_preferred_width(width, width);
}
_updatePorthole() {
if (!Main.layoutManager.primaryMonitor)
this._porthole = { width: global.stage.width, height: global.stage.height,
x: global.stage.x, y: global.stage.y };
else
this._porthole = Main.layoutManager.getWorkAreaForMonitor(Main.layoutManager.primaryIndex);
this.queue_relayout();
}
vfunc_allocate(box, flags) {
this.set_allocation(box, flags);
let rtl = (Clutter.get_default_text_direction () == Clutter.TextDirection.RTL);
if (this._thumbnails.length == 0) // not visible
return;
let workspaceManager = global.workspace_manager;
let themeNode = this.get_theme_node();
box = themeNode.get_content_box(box);
let portholeWidth = this._porthole.width;
let portholeHeight = this._porthole.height;
let spacing = themeNode.get_length('spacing');
// Compute the scale we'll need once everything is updated
let nWorkspaces = workspaceManager.n_workspaces;
let totalSpacing = (nWorkspaces - 1) * spacing;
let avail = (box.y2 - box.y1) - totalSpacing;
let newScale = (avail / nWorkspaces) / portholeHeight;
newScale = Math.min(newScale, MAX_THUMBNAIL_SCALE);
if (newScale != this._targetScale) {
if (this._targetScale > 0) {
// We don't do the tween immediately because we need to observe the ordering
// in queueUpdateStates - if workspaces have been removed we need to slide them
// out as the first thing.
this._targetScale = newScale;
this._pendingScaleUpdate = true;
} else {
this._targetScale = this._scale = newScale;
}
this._queueUpdateStates();
}
let thumbnailHeight = portholeHeight * this._scale;
let thumbnailWidth = Math.round(portholeWidth * this._scale);
let roundedHScale = thumbnailWidth / portholeWidth;
let slideOffset; // X offset when thumbnail is fully slid offscreen
if (rtl)
slideOffset = - (thumbnailWidth + themeNode.get_padding(St.Side.LEFT));
else
slideOffset = thumbnailWidth + themeNode.get_padding(St.Side.RIGHT);
let indicatorY1 = this._indicatorY;
let indicatorY2;
// when not animating, the workspace position overrides this._indicatorY
let activeWorkspace = workspaceManager.get_active_workspace();
let indicatorWorkspace = !this._animatingIndicator ? activeWorkspace : null;
let indicatorThemeNode = this._indicator.get_theme_node();
let indicatorTopFullBorder = indicatorThemeNode.get_padding(St.Side.TOP) + indicatorThemeNode.get_border_width(St.Side.TOP);
let indicatorBottomFullBorder = indicatorThemeNode.get_padding(St.Side.BOTTOM) + indicatorThemeNode.get_border_width(St.Side.BOTTOM);
let indicatorLeftFullBorder = indicatorThemeNode.get_padding(St.Side.LEFT) + indicatorThemeNode.get_border_width(St.Side.LEFT);
let indicatorRightFullBorder = indicatorThemeNode.get_padding(St.Side.RIGHT) + indicatorThemeNode.get_border_width(St.Side.RIGHT);
let y = box.y1;
if (this._dropPlaceholderPos == -1) {
Meta.later_add(Meta.LaterType.BEFORE_REDRAW, () => {
this._dropPlaceholder.hide();
});
}
let childBox = new Clutter.ActorBox();
for (let i = 0; i < this._thumbnails.length; i++) {
let thumbnail = this._thumbnails[i];
if (i > 0)
y += spacing - Math.round(thumbnail.collapseFraction * spacing);
let x1, x2;
if (rtl) {
x1 = box.x1 + slideOffset * thumbnail.slidePosition;
x2 = x1 + thumbnailWidth;
} else {
x1 = box.x2 - thumbnailWidth + slideOffset * thumbnail.slidePosition;
x2 = x1 + thumbnailWidth;
}
if (i == this._dropPlaceholderPos) {
let [minHeight, placeholderHeight] = this._dropPlaceholder.get_preferred_height(-1);
childBox.x1 = x1;
childBox.x2 = x1 + thumbnailWidth;
childBox.y1 = Math.round(y);
childBox.y2 = Math.round(y + placeholderHeight);
this._dropPlaceholder.allocate(childBox, flags);
Meta.later_add(Meta.LaterType.BEFORE_REDRAW, () => {
this._dropPlaceholder.show();
});
y += placeholderHeight + spacing;
}
// We might end up with thumbnailHeight being something like 99.33
// pixels. To make this work and not end up with a gap at the bottom,
// we need some thumbnails to be 99 pixels and some 100 pixels height;
// we compute an actual scale separately for each thumbnail.
let y1 = Math.round(y);
let y2 = Math.round(y + thumbnailHeight);
let roundedVScale = (y2 - y1) / portholeHeight;
if (thumbnail.metaWorkspace == indicatorWorkspace) {
indicatorY1 = y1;
indicatorY2 = y2;
}
// Allocating a scaled actor is funny - x1/y1 correspond to the origin
// of the actor, but x2/y2 are increased by the *unscaled* size.
childBox.x1 = x1;
childBox.x2 = x1 + portholeWidth;
childBox.y1 = y1;
childBox.y2 = y1 + portholeHeight;
thumbnail.actor.set_scale(roundedHScale, roundedVScale);
thumbnail.actor.allocate(childBox, flags);
// We round the collapsing portion so that we don't get thumbnails resizing
// during an animation due to differences in rounded, but leave the uncollapsed
// portion unrounded so that non-animating we end up with the right total
y += thumbnailHeight - Math.round(thumbnailHeight * thumbnail.collapseFraction);
}
if (rtl) {
childBox.x1 = box.x1;
childBox.x2 = box.x1 + thumbnailWidth;
} else {
childBox.x1 = box.x2 - thumbnailWidth;
childBox.x2 = box.x2;
}
childBox.x1 -= indicatorLeftFullBorder;
childBox.x2 += indicatorRightFullBorder;
childBox.y1 = indicatorY1 - indicatorTopFullBorder;
childBox.y2 = (indicatorY2 ? indicatorY2 : (indicatorY1 + thumbnailHeight)) + indicatorBottomFullBorder;
this._indicator.allocate(childBox, flags);
}
_activeWorkspaceChanged(wm, from, to, direction) {
let thumbnail;
let workspaceManager = global.workspace_manager;
let activeWorkspace = workspaceManager.get_active_workspace();
for (let i = 0; i < this._thumbnails.length; i++) {
if (this._thumbnails[i].metaWorkspace == activeWorkspace) {
thumbnail = this._thumbnails[i];
break;
}
}
this._animatingIndicator = true;
let indicatorThemeNode = this._indicator.get_theme_node();
let indicatorTopFullBorder = indicatorThemeNode.get_padding(St.Side.TOP) + indicatorThemeNode.get_border_width(St.Side.TOP);
this.indicatorY = this._indicator.allocation.y1 + indicatorTopFullBorder;
Tweener.addTween(this,
{ indicatorY: thumbnail.actor.allocation.y1,
time: WorkspacesView.WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad',
onComplete() {
this._animatingIndicator = false;
this._queueUpdateStates();
},
onCompleteScope: this
});
}
});