gnome-shell/js/ui/workspaceThumbnail.js
verdre 52cbc299a7 workspace: Fix infinite loop when finding parent window of dialogs
When a dialog is added to a window while the overview is shown, we get
its parent using get_transient_for() so we can add it to the right
window clone.

If we have multiple layers of dialogs we have to do this recursively
until we find the root ancestor. This case currently results in an
infinite loop: Since parent is always set to the same window, the
while-condition will always be true.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/180
2018-08-03 00:09:02 +02:00

1370 lines
48 KiB
JavaScript

// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Lang = imports.lang;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const St = imports.gi.St;
const Background = imports.ui.background;
const DND = imports.ui.dnd;
const Main = imports.ui.main;
const Tweener = imports.ui.tweener;
const WindowManager = imports.ui.windowManager;
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 OVERRIDE_SCHEMA = 'org.gnome.shell.overrides';
/* A layout manager that requests size only for primary_actor, but then allocates
all using a fixed layout */
var PrimaryActorLayout = new Lang.Class({
Name: 'PrimaryActorLayout',
Extends: Clutter.FixedLayout,
_init(primaryActor) {
this.parent();
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 = new Lang.Class({
Name: 'WindowClone',
_init(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 = new Lang.Class({
Name: 'WorkspaceThumbnail',
_init(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) {
for (let i = 0; i < this._windows.length; i++) {
if (this._windows[i].metaWindow == metaWindow) {
return i;
}
}
return -1;
},
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 = new Lang.Class({
Name: 'ThumbnailsBox',
_init() {
this.actor = new Shell.GenericContainer({ reactive: true,
style_class: 'workspace-thumbnails',
request_mode: Clutter.RequestMode.WIDTH_FOR_HEIGHT });
this.actor.connect('get-preferred-width', this._getPreferredWidth.bind(this));
this.actor.connect('get-preferred-height', this._getPreferredHeight.bind(this));
this.actor.connect('allocate', this._allocate.bind(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.actor.add_actor(indicator);
this._dropWorkspace = -1;
this._dropPlaceholderPos = -1;
this._dropPlaceholder = new St.Bin({ style_class: 'placeholder' });
this.actor.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.actor.connect('button-press-event', () => Clutter.EVENT_STOP);
this.actor.connect('button-release-event', this._onButtonRelease.bind(this));
this.actor.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: OVERRIDE_SCHEMA });
this._settings.connect('changed::dynamic-workspaces',
this._updateSwitcherVisibility.bind(this));
Main.layoutManager.connect('monitors-changed', this._rebuildThumbnails.bind(this));
this._switchWorkspaceNotifyId = 0;
this._nWorkspacesNotifyId = 0;
this._syncStackingId = 0;
this._workareasChangedId = 0;
},
_updateSwitcherVisibility() {
let workspaceManager = global.workspace_manager;
this.actor.visible =
this._settings.get_boolean('dynamic-workspaces') ||
workspaceManager.n_workspaces > 1;
},
_activateThumbnailAtPoint(stageX, stageY, time) {
let [r, x, y] = this.actor.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.actor.contains(dragEvent.targetActor))
this._onLeave();
return DND.DragMotionResult.CONTINUE;
},
_onLeave() {
this._clearDragPlaceholder();
},
_clearDragPlaceholder() {
if (this._dropPlaceholderPos == -1)
return;
this._dropPlaceholderPos = -1;
this.actor.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.actor.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.actor.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._workareasChangedId =
global.display.connect('workareas-changed',
this._rebuildThumbnails.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;
}
if (this._workareasChangedId > 0) {
global.display.disconnect(this._workareasChangedId);
this._workareasChangedId = 0;
}
for (let w = 0; w < this._thumbnails.length; w++)
this._thumbnails[w].destroy();
this._thumbnails = [];
this._porthole = null;
},
_rebuildThumbnails() {
this._destroyThumbnails();
if (Main.overview.visible)
this._createThumbnails();
},
_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;
if (!this._ensurePorthole())
return;
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.actor.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.actor.queue_relayout();
},
get scale() {
return this._scale;
},
set indicatorY(indicatorY) {
this._indicatorY = indicatorY;
this.actor.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.actor.set_skip_paint(thumbnail.actor, true);
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;
},
_getPreferredHeight(actor, forWidth, alloc) {
// 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.
if (!this._ensurePorthole()) {
alloc.min_size = -1;
alloc.natural_size = -1;
return;
}
let workspaceManager = global.workspace_manager;
let themeNode = this.actor.get_theme_node();
let spacing = themeNode.get_length('spacing');
let nWorkspaces = workspaceManager.n_workspaces;
let totalSpacing = (nWorkspaces - 1) * spacing;
alloc.min_size = totalSpacing;
alloc.natural_size = totalSpacing + nWorkspaces * this._porthole.height * MAX_THUMBNAIL_SCALE;
},
_getPreferredWidth(actor, forHeight, alloc) {
if (!this._ensurePorthole()) {
alloc.min_size = -1;
alloc.natural_size = -1;
return;
}
let workspaceManager = global.workspace_manager;
let themeNode = this.actor.get_theme_node();
let spacing = this.actor.get_theme_node().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);
alloc.min_size = width;
alloc.natural_size = width;
},
// The "porthole" is the portion of the screen that we show in the
// workspaces
_ensurePorthole() {
if (!Main.layoutManager.primaryMonitor || !Main.overview.visible)
return false;
if (!this._porthole)
this._porthole = Main.layoutManager.getWorkAreaForMonitor(Main.layoutManager.primaryIndex);
return true;
},
_allocate(actor, 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.actor.get_theme_node();
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
});
}
});