gnome-shell/js/ui/workspacesView.js
Florian Müllner ed8acefc00 workspaces-display: Don't slide out pager on drag-begin
Sliding out the workspaces pager when starting a drag causes a lot
of motion. With the pager only hiding if workspaces are not used,
it is better to require to explicitly hover the workspaces sidebar
for the sliding.

https://bugzilla.gnome.org/show_bug.cgi?id=652730
2011-06-27 21:39:28 +02:00

924 lines
33 KiB
JavaScript

/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Clutter = imports.gi.Clutter;
const Lang = imports.lang;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const Shell = imports.gi.Shell;
const St = imports.gi.St;
const Signals = imports.signals;
const DND = imports.ui.dnd;
const Main = imports.ui.main;
const Overview = imports.ui.overview;
const Tweener = imports.ui.tweener;
const Workspace = imports.ui.workspace;
const WorkspaceThumbnail = imports.ui.workspaceThumbnail;
const WORKSPACE_SWITCH_TIME = 0.25;
// Note that mutter has a compile-time limit of 36
const MAX_WORKSPACES = 16;
const CONTROLS_POP_IN_TIME = 0.1;
function WorkspacesView(workspaces) {
this._init(workspaces);
}
WorkspacesView.prototype = {
_init: function(workspaces) {
this.actor = new St.Group({ style_class: 'workspaces-view' });
// The actor itself isn't a drop target, so we don't want to pick on its area
this.actor.set_size(0, 0);
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
this.actor.connect('style-changed', Lang.bind(this,
function() {
let node = this.actor.get_theme_node();
this._spacing = node.get_length('spacing');
this._updateWorkspaceActors(false);
}));
this.actor.connect('notify::mapped',
Lang.bind(this, this._onMappedChanged));
this._width = 0;
this._height = 0;
this._x = 0;
this._y = 0;
this._clipX = 0;
this._clipY = 0;
this._clipWidth = 0;
this._clipHeight = 0;
this._workspaceRatioSpacing = 0;
this._spacing = 0;
this._animating = false; // tweening
this._scrolling = false; // swipe-scrolling
this._animatingScroll = false; // programatically updating the adjustment
this._zoomOut = false; // zoom to a larger area
this._inDrag = false; // dragging a window
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
this._workspaces = workspaces;
// Add workspace actors
for (let w = 0; w < global.screen.n_workspaces; w++)
this._workspaces[w].actor.reparent(this.actor);
this._workspaces[activeWorkspaceIndex].actor.raise_top();
this._extraWorkspaces = [];
let monitors = global.get_monitors();
let m = 0;
for (let i = 0; i < monitors.length; i++) {
if (i == global.get_primary_monitor_index())
continue;
let ws = new Workspace.Workspace(null, i);
this._extraWorkspaces[m++] = ws;
ws.setGeometry(monitors[i].x, monitors[i].y, monitors[i].width, monitors[i].height);
global.overlay_group.add_actor(ws.actor);
}
// Position/scale the desktop windows and their children after the
// workspaces have been created. This cannot be done first because
// window movement depends on the Workspaces object being accessible
// as an Overview member.
this._overviewShowingId =
Main.overview.connect('showing',
Lang.bind(this, function() {
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].zoomToOverview();
for (let w = 0; w < this._extraWorkspaces.length; w++)
this._extraWorkspaces[w].zoomToOverview();
}));
this._overviewShownId =
Main.overview.connect('shown',
Lang.bind(this, function() {
this.actor.set_clip(this._clipX, this._clipY,
this._clipWidth, this._clipHeight);
}));
this._scrollAdjustment = new St.Adjustment({ value: activeWorkspaceIndex,
lower: 0,
page_increment: 1,
page_size: 1,
step_increment: 0,
upper: this._workspaces.length });
this._scrollAdjustment.connect('notify::value',
Lang.bind(this, this._onScroll));
this._timeoutId = 0;
this._switchWorkspaceNotifyId =
global.window_manager.connect('switch-workspace',
Lang.bind(this, this._activeWorkspaceChanged));
this._itemDragBeginId = Main.overview.connect('item-drag-begin',
Lang.bind(this, this._dragBegin));
this._itemDragEndId = Main.overview.connect('item-drag-end',
Lang.bind(this, this._dragEnd));
this._windowDragBeginId = Main.overview.connect('window-drag-begin',
Lang.bind(this, this._dragBegin));
this._windowDragEndId = Main.overview.connect('window-drag-end',
Lang.bind(this, this._dragEnd));
this._swipeScrollBeginId = 0;
this._swipeScrollEndId = 0;
},
setGeometry: function(x, y, width, height, spacing) {
if (this._x == x && this._y == y &&
this._width == width && this._height == height)
return;
this._width = width;
this._height = height;
this._x = x;
this._y = y;
this._workspaceRatioSpacing = spacing;
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].setGeometry(x, y, width, height);
},
setClipRect: function(x, y, width, height) {
this._clipX = x;
this._clipY = y;
this._clipWidth = width;
this._clipHeight = height;
},
_lookupWorkspaceForMetaWindow: function (metaWindow) {
for (let i = 0; i < this._workspaces.length; i++) {
if (this._workspaces[i].containsMetaWindow(metaWindow))
return this._workspaces[i];
}
return null;
},
getActiveWorkspace: function() {
let active = global.screen.get_active_workspace_index();
return this._workspaces[active];
},
getWorkspaceByIndex: function(index) {
return this._workspaces[index];
},
hide: function() {
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
let activeWorkspace = this._workspaces[activeWorkspaceIndex];
activeWorkspace.actor.raise_top();
this.actor.remove_clip(this._x, this._y, this._width, this._height);
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].zoomFromOverview();
for (let w = 0; w < this._extraWorkspaces.length; w++)
this._extraWorkspaces[w].zoomFromOverview();
},
destroy: function() {
this.actor.destroy();
},
syncStacking: function(stackIndices) {
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].syncStacking(stackIndices);
for (let i = 0; i < this._extraWorkspaces.length; i++)
this._extraWorkspaces[i].syncStacking(stackIndices);
},
updateWindowPositions: function() {
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].positionWindows(Workspace.WindowPositionFlags.ANIMATE);
},
_scrollToActive: function(showAnimation) {
let active = global.screen.get_active_workspace_index();
this._updateWorkspaceActors(showAnimation);
this._updateScrollAdjustment(active, showAnimation);
},
// Update workspace actors parameters
// @showAnimation: iff %true, transition between states
_updateWorkspaceActors: function(showAnimation) {
let active = global.screen.get_active_workspace_index();
this._animating = showAnimation;
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
Tweener.removeTweens(workspace.actor);
let y = (w - active) * (this._height + this._spacing + this._workspaceRatioSpacing);
if (showAnimation) {
let params = { y: y,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad'
};
// we have to call _updateVisibility() once before the
// animation and once afterwards - it does not really
// matter which tween we use, so we pick the first one ...
if (w == 0) {
this._updateVisibility();
params.onComplete = Lang.bind(this,
function() {
this._animating = false;
this._updateVisibility();
});
}
Tweener.addTween(workspace.actor, params);
} else {
workspace.actor.set_position(0, y);
if (w == 0)
this._updateVisibility();
}
}
},
_updateVisibility: function() {
let active = global.screen.get_active_workspace_index();
for (let w = 0; w < this._workspaces.length; w++) {
let workspace = this._workspaces[w];
if (this._animating || this._scrolling) {
workspace.hideWindowsOverlays();
workspace.actor.show();
} else {
workspace.showWindowsOverlays();
if (this._inDrag)
workspace.actor.visible = (Math.abs(w - active) <= 1);
else
workspace.actor.visible = (w == active);
}
}
},
_updateScrollAdjustment: function(index, showAnimation) {
if (this._scrolling)
return;
this._animatingScroll = true;
if (showAnimation) {
Tweener.addTween(this._scrollAdjustment, {
value: index,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this,
function() {
this._animatingScroll = false;
})
});
} else {
this._scrollAdjustment.value = index;
this._animatingScroll = false;
}
},
updateWorkspaces: function(oldNumWorkspaces, newNumWorkspaces) {
let active = global.screen.get_active_workspace_index();
Tweener.addTween(this._scrollAdjustment,
{ upper: newNumWorkspaces,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad'
});
if (newNumWorkspaces > oldNumWorkspaces) {
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++) {
this._workspaces[w].setGeometry(this._x, this._y,
this._width, this._height);
this.actor.add_actor(this._workspaces[w].actor);
}
this._updateWorkspaceActors(false);
}
this._scrollToActive(true);
},
_activeWorkspaceChanged: function(wm, from, to, direction) {
if (this._scrolling)
return;
this._scrollToActive(true);
},
_onDestroy: function() {
for (let i = 0; i < this._extraWorkspaces.length; i++)
this._extraWorkspaces[i].destroy();
this._scrollAdjustment.run_dispose();
Main.overview.disconnect(this._overviewShowingId);
Main.overview.disconnect(this._overviewShownId);
global.window_manager.disconnect(this._switchWorkspaceNotifyId);
if (this._inDrag)
this._dragEnd();
if (this._timeoutId) {
Mainloop.source_remove(this._timeoutId);
this._timeoutId = 0;
}
if (this._itemDragBeginId > 0) {
Main.overview.disconnect(this._itemDragBeginId);
this._itemDragBeginId = 0;
}
if (this._itemDragEndId > 0) {
Main.overview.disconnect(this._itemDragEndId);
this._itemDragEndId = 0;
}
if (this._windowDragBeginId > 0) {
Main.overview.disconnect(this._windowDragBeginId);
this._windowDragBeginId = 0;
}
if (this._windowDragEndId > 0) {
Main.overview.disconnect(this._windowDragEndId);
this._windowDragEndId = 0;
}
},
_onMappedChanged: function() {
if (this.actor.mapped) {
let direction = Overview.SwipeScrollDirection.VERTICAL;
Main.overview.setScrollAdjustment(this._scrollAdjustment,
direction);
this._swipeScrollBeginId = Main.overview.connect('swipe-scroll-begin',
Lang.bind(this, this._swipeScrollBegin));
this._swipeScrollEndId = Main.overview.connect('swipe-scroll-end',
Lang.bind(this, this._swipeScrollEnd));
} else {
Main.overview.disconnect(this._swipeScrollBeginId);
Main.overview.disconnect(this._swipeScrollEndId);
}
},
_dragBegin: function() {
if (this._scrolling)
return;
this._inDrag = true;
this._firstDragMotion = true;
this._dragMonitor = {
dragMotion: Lang.bind(this, this._onDragMotion)
};
DND.addDragMonitor(this._dragMonitor);
},
_onDragMotion: function(dragEvent) {
if (Main.overview.animationInProgress)
return DND.DragMotionResult.CONTINUE;
if (this._firstDragMotion) {
this._firstDragMotion = false;
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].setReservedSlot(dragEvent.dragActor._delegate);
for (let i = 0; i < this._extraWorkspaces.length; i++)
this._extraWorkspaces[i].setReservedSlot(dragEvent.dragActor._delegate);
}
let primary = global.get_primary_monitor();
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
let topWorkspace, bottomWorkspace;
topWorkspace = this._workspaces[activeWorkspaceIndex - 1];
bottomWorkspace = this._workspaces[activeWorkspaceIndex + 1];
let hoverWorkspace = null;
// reactive monitor edges
let topEdge = primary.y;
let switchTop = (dragEvent.y <= topEdge && topWorkspace);
if (switchTop && this._dragOverLastY != topEdge) {
topWorkspace.metaWorkspace.activate(global.get_current_time());
this._dragOverLastY = topEdge;
return DND.DragMotionResult.CONTINUE;
}
let bottomEdge = primary.y + primary.height - 1;
let switchBottom = (dragEvent.y >= bottomEdge && bottomWorkspace);
if (switchBottom && this._dragOverLastY != bottomEdge) {
bottomWorkspace.metaWorkspace.activate(global.get_current_time());
this._dragOverLastY = bottomEdge;
return DND.DragMotionResult.CONTINUE;
}
this._dragOverLastY = dragEvent.y;
let result = DND.DragMotionResult.CONTINUE;
// check hover state of new workspace area / inactive workspaces
if (topWorkspace) {
if (topWorkspace.actor.contains(dragEvent.targetActor)) {
hoverWorkspace = topWorkspace;
result = topWorkspace.handleDragOver(dragEvent.source, dragEvent.dragActor);
}
}
if (bottomWorkspace) {
if (bottomWorkspace.actor.contains(dragEvent.targetActor)) {
hoverWorkspace = bottomWorkspace;
result = bottomWorkspace.handleDragOver(dragEvent.source, dragEvent.dragActor);
}
}
// handle delayed workspace switches
if (hoverWorkspace) {
if (!this._timeoutId)
this._timeoutId = Mainloop.timeout_add_seconds(1,
Lang.bind(this, function() {
hoverWorkspace.metaWorkspace.activate(global.get_current_time());
return false;
}));
} else {
if (this._timeoutId) {
Mainloop.source_remove(this._timeoutId);
this._timeoutId = 0;
}
}
return result;
},
_dragEnd: function() {
if (this._timeoutId) {
Mainloop.source_remove(this._timeoutId);
this._timeoutId = 0;
}
DND.removeDragMonitor(this._dragMonitor);
this._inDrag = false;
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].setReservedSlot(null);
for (let i = 0; i < this._extraWorkspaces.length; i++)
this._extraWorkspaces[i].setReservedSlot(null);
},
_swipeScrollBegin: function() {
this._scrolling = true;
},
_swipeScrollEnd: function(overview, result) {
this._scrolling = false;
if (result == Overview.SwipeScrollResult.CLICK) {
let [x, y, mod] = global.get_pointer();
let actor = global.stage.get_actor_at_pos(Clutter.PickMode.ALL,
x, y);
// Only switch to the workspace when there's no application
// windows open. The problem is that it's too easy to miss
// an app window and get the wrong one focused.
let active = global.screen.get_active_workspace_index();
if (this._workspaces[active].isEmpty() &&
this.actor.contains(actor))
Main.overview.hide();
}
// Make sure title captions etc are shown as necessary
this._updateVisibility();
},
// sync the workspaces' positions to the value of the scroll adjustment
// and change the active workspace if appropriate
_onScroll: function(adj) {
if (this._animatingScroll)
return;
let active = global.screen.get_active_workspace_index();
let current = Math.round(adj.value);
if (active != current) {
let metaWorkspace = this._workspaces[current].metaWorkspace;
metaWorkspace.activate(global.get_current_time());
}
let last = this._workspaces.length - 1;
let firstWorkspaceY = this._workspaces[0].actor.y;
let lastWorkspaceY = this._workspaces[last].actor.y;
let workspacesHeight = lastWorkspaceY - firstWorkspaceY;
if (adj.upper == 1)
return;
let currentY = firstWorkspaceY;
let newY = - adj.value / (adj.upper - 1) * workspacesHeight;
let dy = newY - currentY;
for (let i = 0; i < this._workspaces.length; i++) {
this._workspaces[i].hideWindowsOverlays();
this._workspaces[i].actor.visible = Math.abs(i - adj.value) <= 1;
this._workspaces[i].actor.y += dy;
}
},
_getWorkspaceIndexToRemove: function() {
return global.screen.get_active_workspace_index();
}
};
Signals.addSignalMethods(WorkspacesView.prototype);
function WorkspacesDisplay() {
this._init();
}
WorkspacesDisplay.prototype = {
_init: function() {
this.actor = new Shell.GenericContainer();
this.actor.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
this.actor.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
this.actor.connect('allocate', Lang.bind(this, this._allocate));
this.actor.set_clip_to_allocation(true);
let controls = new St.Bin({ style_class: 'workspace-controls',
request_mode: Clutter.RequestMode.WIDTH_FOR_HEIGHT,
y_align: St.Align.START,
y_fill: true });
this._controls = controls;
this.actor.add_actor(controls);
controls.reactive = true;
controls.track_hover = true;
controls.connect('notify::hover',
Lang.bind(this, this._onControlsHoverChanged));
controls.connect('scroll-event',
Lang.bind(this, this._onScrollEvent));
this._monitorIndex = global.get_primary_monitor_index();
this._monitor = global.get_monitors()[this._monitorIndex];
this._thumbnailsBox = new WorkspaceThumbnail.ThumbnailsBox();
controls.add_actor(this._thumbnailsBox.actor);
this.workspacesView = null;
this._inDrag = false;
this._cancelledDrag = false;
this._alwaysZoomOut = false;
this._zoomOut = false;
this._zoomFraction = 0;
this._updateAlwaysZoom();
global.screen.connect('monitors-changed', Lang.bind(this, this._updateAlwaysZoom));
global.screen.connect('notify::n-workspaces',
Lang.bind(this, this._workspacesChanged));
Main.xdndHandler.connect('drag-begin', Lang.bind(this, function(){
this._alwaysZoomOut = true;
}));
Main.xdndHandler.connect('drag-end', Lang.bind(this, function(){
this._alwaysZoomOut = false;
this._updateAlwaysZoom();
}));
this._switchWorkspaceNotifyId = 0;
this._itemDragBeginId = 0;
this._itemDragCancelledId = 0;
this._itemDragEndId = 0;
this._windowDragBeginId = 0;
this._windowDragCancelledId = 0;
this._windowDragEndId = 0;
},
show: function() {
this._zoomOut = this._alwaysZoomOut;
this._zoomFraction = this._alwaysZoomOut ? 1 : 0;
this._updateZoom();
this._controls.show();
this._thumbnailsBox.show();
this._workspaces = [];
for (let i = 0; i < global.screen.n_workspaces; i++) {
let metaWorkspace = global.screen.get_workspace_by_index(i);
this._workspaces[i] = new Workspace.Workspace(metaWorkspace, this._monitorIndex);
}
if (this.workspacesView)
this.workspacesView.destroy();
this.workspacesView = new WorkspacesView(this._workspaces);
this._updateWorkspacesGeometry();
this._restackedNotifyId =
global.screen.connect('restacked',
Lang.bind(this, this._onRestacked));
if (this._itemDragBeginId == 0)
this._itemDragBeginId = Main.overview.connect('item-drag-begin',
Lang.bind(this, this._dragBegin));
if (this._itemDragCancelledId == 0)
this._itemDragCancelledId = Main.overview.connect('item-drag-cancelled',
Lang.bind(this, this._dragCancelled));
if (this._itemDragEndId == 0)
this._itemDragEndId = Main.overview.connect('item-drag-end',
Lang.bind(this, this._dragEnd));
if (this._windowDragBeginId == 0)
this._windowDragBeginId = Main.overview.connect('window-drag-begin',
Lang.bind(this, this._dragBegin));
if (this._windowDragCancelledId == 0)
this._windowDragCancelledId = Main.overview.connect('window-drag-cancelled',
Lang.bind(this, this._dragCancelled));
if (this._windowDragEndId == 0)
this._windowDragEndId = Main.overview.connect('window-drag-end',
Lang.bind(this, this._dragEnd));
this._onRestacked();
},
hide: function() {
this._controls.hide();
this._thumbnailsBox.hide();
if (this._restackedNotifyId > 0){
global.screen.disconnect(this._restackedNotifyId);
this._restackedNotifyId = 0;
}
if (this._itemDragBeginId > 0) {
Main.overview.disconnect(this._itemDragBeginId);
this._itemDragBeginId = 0;
}
if (this._itemDragCancelledId > 0) {
Main.overview.disconnect(this._itemDragCancelledId);
this._itemDragCancelledId = 0;
}
if (this._itemDragEndId > 0) {
Main.overview.disconnect(this._itemDragEndId);
this._itemDragEndId = 0;
}
if (this._windowDragBeginId > 0) {
Main.overview.disconnect(this._windowDragBeginId);
this._windowDragBeginId = 0;
}
if (this._windowDragCancelledId > 0) {
Main.overview.disconnect(this._windowDragCancelledId);
this._windowDragCancelledId = 0;
}
if (this._windowDragEndId > 0) {
Main.overview.disconnect(this._windowDragEndId);
this._windowDragEndId = 0;
}
this.workspacesView.destroy();
this.workspacesView = null;
for (let w = 0; w < this._workspaces.length; w++) {
this._workspaces[w].disconnectAll();
this._workspaces[w].destroy();
}
},
// zoomFraction property allows us to tween the controls sliding in and out
set zoomFraction(fraction) {
this._zoomFraction = fraction;
this.actor.queue_relayout();
},
get zoomFraction() {
return this._zoomFraction;
},
_updateAlwaysZoom: function() {
// Always show the pager if workspaces are actually used,
// e.g. there are windows on more than one
this._alwaysZoomOut = global.screen.n_workspaces > 2;
if (this._alwaysZoomOut)
return;
let monitors = global.get_monitors();
let primary = global.get_primary_monitor();
/* Look for any monitor to the right of the primary, if there is
* one, we always keep zoom out, otherwise its hard to reach
* the thumbnail area without passing into the next monitor. */
for (let i = 0; i < monitors.length; i++) {
if (monitors[i].x >= primary.x + primary.width) {
this._alwaysZoomOut = true;
break;
}
}
},
_getPreferredWidth: function (actor, forHeight, alloc) {
// pass through the call in case the child needs it, but report 0x0
this._controls.get_preferred_width(forHeight);
},
_getPreferredHeight: function (actor, forWidth, alloc) {
// pass through the call in case the child needs it, but report 0x0
this._controls.get_preferred_height(forWidth);
},
_allocate: function (actor, box, flags) {
let childBox = new Clutter.ActorBox();
let totalWidth = box.x2 - box.x1;
// width of the controls
let [controlsMin, controlsNatural] = this._controls.get_preferred_width(box.y2 - box.y1);
// Amount of space on the screen we reserve for the visible control
let controlsVisible = this._controls.get_theme_node().get_length('visible-width');
let controlsReserved = controlsVisible * (1 - this._zoomFraction) + controlsNatural * this._zoomFraction;
let rtl = (St.Widget.get_default_direction () == St.TextDirection.RTL);
if (rtl) {
childBox.x2 = controlsReserved;
childBox.x1 = childBox.x2 - controlsNatural;
} else {
childBox.x1 = totalWidth - controlsReserved;
childBox.x2 = childBox.x1 + controlsNatural;
}
childBox.y1 = 0;
childBox.y2 = box.y2- box.y1;
this._controls.allocate(childBox, flags);
this._updateWorkspacesGeometry();
},
_updateWorkspacesGeometry: function() {
if (!this.workspacesView)
return;
let fullWidth = this.actor.allocation.x2 - this.actor.allocation.x1;
let fullHeight = this.actor.allocation.y2 - this.actor.allocation.y1;
let width = fullWidth;
let height = fullHeight;
let [controlsMin, controlsNatural] = this._controls.get_preferred_width(height);
let controlsVisible = this._controls.get_theme_node().get_length('visible-width');
let [x, y] = this.actor.get_transformed_position();
let rtl = (St.Widget.get_default_direction () == St.TextDirection.RTL);
let clipWidth = width - controlsVisible;
let clipHeight = (fullHeight / fullWidth) * clipWidth;
let clipX = rtl ? x + controlsVisible : x;
let clipY = y + (fullHeight - clipHeight) / 2;
this.workspacesView.setClipRect(clipX, clipY, clipWidth, clipHeight);
if (this._zoomOut) {
width -= controlsNatural;
if (rtl)
x += controlsNatural;
} else {
width -= controlsVisible;
if (rtl)
x += controlsVisible;
}
height = (fullHeight / fullWidth) * width;
let difference = fullHeight - height;
y += difference / 2;
this.workspacesView.setGeometry(x, y, width, height, difference);
},
_onRestacked: function() {
let stack = global.get_window_actors();
let stackIndices = {};
for (let i = 0; i < stack.length; i++) {
// Use the stable sequence for an integer to use as a hash key
stackIndices[stack[i].get_meta_window().get_stable_sequence()] = i;
}
this.workspacesView.syncStacking(stackIndices);
this._thumbnailsBox.syncStacking(stackIndices);
},
_workspacesChanged: function() {
let oldNumWorkspaces = this._workspaces.length;
let newNumWorkspaces = global.screen.n_workspaces;
let active = global.screen.get_active_workspace_index();
if (oldNumWorkspaces == newNumWorkspaces)
return;
this._updateAlwaysZoom();
this._updateZoom();
if (this.workspacesView == null)
return;
let lostWorkspaces = [];
if (newNumWorkspaces > oldNumWorkspaces) {
// Assume workspaces are only added at the end
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++) {
let metaWorkspace = global.screen.get_workspace_by_index(w);
this._workspaces[w] = new Workspace.Workspace(metaWorkspace, this._monitorIndex);
}
this._thumbnailsBox.addThumbnails(oldNumWorkspaces, newNumWorkspaces - oldNumWorkspaces);
} else {
// Assume workspaces are only removed sequentially
// (e.g. 2,3,4 - not 2,4,7)
let removedIndex;
let removedNum = oldNumWorkspaces - newNumWorkspaces;
for (let w = 0; w < oldNumWorkspaces; w++) {
let metaWorkspace = global.screen.get_workspace_by_index(w);
if (this._workspaces[w].metaWorkspace != metaWorkspace) {
removedIndex = w;
break;
}
}
lostWorkspaces = this._workspaces.splice(removedIndex,
removedNum);
for (let l = 0; l < lostWorkspaces.length; l++) {
lostWorkspaces[l].disconnectAll();
lostWorkspaces[l].destroy();
}
this._thumbnailsBox.removeThumbmails(removedIndex, removedNum);
}
this.workspacesView.updateWorkspaces(oldNumWorkspaces,
newNumWorkspaces);
},
_updateZoom : function() {
if (Main.overview.animationInProgress)
return;
let shouldZoom = this._alwaysZoomOut || this._controls.hover;
if (shouldZoom != this._zoomOut) {
this._zoomOut = shouldZoom;
this._updateWorkspacesGeometry();
if (!this.workspacesView)
return;
Tweener.addTween(this,
{ zoomFraction: this._zoomOut ? 1 : 0,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad' });
this.workspacesView.updateWindowPositions();
}
},
_onControlsHoverChanged: function() {
this._updateZoom();
},
_dragBegin: function() {
this._inDrag = true;
this._cancelledDrag = false;
this._dragMonitor = {
dragMotion: Lang.bind(this, this._onDragMotion)
};
DND.addDragMonitor(this._dragMonitor);
},
_dragCancelled: function() {
this._cancelledDrag = true;
DND.removeDragMonitor(this._dragMonitor);
},
_onDragMotion: function(dragEvent) {
let controlsHovered = this._controls.contains(dragEvent.targetActor);
this._controls.set_hover(controlsHovered);
return DND.DragMotionResult.CONTINUE;
},
_dragEnd: function() {
this._inDrag = false;
// We do this deferred because drag-end is emitted before dnd.js emits
// event/leave events that were suppressed during the drag. If we didn't
// defer this, we'd zoom out then immediately zoom in because of the
// enter event we received. That would normally be invisible but we
// might as well avoid it.
Meta.later_add(Meta.LaterType.BEFORE_REDRAW,
Lang.bind(this, this._updateZoom));
},
_onScrollEvent: function (actor, event) {
switch ( event.get_scroll_direction() ) {
case Clutter.ScrollDirection.UP:
Main.wm.actionMoveWorkspaceUp();
break;
case Clutter.ScrollDirection.DOWN:
Main.wm.actionMoveWorkspaceDown();
break;
}
}
};
Signals.addSignalMethods(WorkspacesDisplay.prototype);