gnome-shell/js/ui/workspacesView.js
Jasper St. Pierre 8f86fd6bae workspacesView: Simplify the workspacesOnlyOnPrimary implementation
Before, workspacesOnlyOnPrimary was implemented in quite a crazy manner:

 * If workspacesOnlyOnPrimary was false, we'd create one WorkspacesView per
   monitor, with the primary one being a bit special.

 * If workspacesOnlyOnPrimary was true, we'd create one WorkspacesView, and
   additional montiors would be handled inside that WorkspacesView as
   "extra workspaces".

This caused numerous bugs as the two modes weren't consistently
implemented, and a lot of code was duplicated between all the modes.
Fix this by always creating WorkspaceViews, even if it only handles
one interface. We do this by having two different WorkspacesView-ish
classes: WorkspacesView handles the traditional combination of lots
of workspces, and a new ExtraWorkspaceView is in control of only one
workspace.
2013-10-30 13:17:39 -04:00

619 lines
21 KiB
JavaScript

// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const GObject = imports.gi.GObject;
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 OVERRIDE_SCHEMA = 'org.gnome.shell.overrides';
const WorkspacesViewBase = new Lang.Class({
Name: 'WorkspacesViewBase',
_init: function(monitorIndex) {
this.actor = new St.Widget({ style_class: 'workspaces-view',
reactive: true });
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
// 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._monitorIndex = monitorIndex;
this._fullGeometry = null;
this._actualGeometry = null;
this._inDrag = false;
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));
},
_onDestroy: function() {
this._dragEnd();
if (this._windowDragBeginId > 0) {
Main.overview.disconnect(this._windowDragBeginId);
this._windowDragBeginId = 0;
}
if (this._windowDragEndId > 0) {
Main.overview.disconnect(this._windowDragEndId);
this._windowDragEndId = 0;
}
},
_dragBegin: function(overview, clone) {
this._inDrag = true;
this._setReservedSlot(clone);
},
_dragEnd: function() {
this._inDrag = false;
this._setReservedSlot(null);
},
destroy: function() {
this.actor.destroy();
},
setFullGeometry: function(geom) {
this._fullGeometry = geom;
this._syncGeometry();
},
setActualGeometry: function(geom) {
this._actualGeometry = geom;
this._syncGeometry();
},
});
const WorkspacesView = new Lang.Class({
Name: 'WorkspacesView',
Extends: WorkspacesViewBase,
_init: function(monitorIndex) {
this.parent(monitorIndex);
this._animating = false; // tweening
this._scrolling = false; // swipe-scrolling
this._animatingScroll = false; // programatically updating the adjustment
this._settings = new Gio.Settings({ schema: OVERRIDE_SCHEMA });
let activeWorkspaceIndex = global.screen.get_active_workspace_index();
this.scrollAdjustment = new St.Adjustment({ value: activeWorkspaceIndex,
lower: 0,
page_increment: 1,
page_size: 1,
step_increment: 0,
upper: 0 });
this.scrollAdjustment.connect('notify::value',
Lang.bind(this, this._onScroll));
this._workspaces = [];
this._updateWorkspaces();
this._updateWorkspacesId = global.screen.connect('notify::n-workspaces', Lang.bind(this, this._updateWorkspaces));
this._overviewShownId =
Main.overview.connect('shown',
Lang.bind(this, function() {
this.actor.set_clip(this._fullGeometry.x, this._fullGeometry.y,
this._fullGeometry.width, this._fullGeometry.height);
}));
this._switchWorkspaceNotifyId =
global.window_manager.connect('switch-workspace',
Lang.bind(this, this._activeWorkspaceChanged));
},
_setReservedSlot: function(clone) {
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].setReservedSlot(clone);
},
_syncGeometry: function() {
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].setFullGeometry(this._fullGeometry);
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].setActualGeometry(this._actualGeometry);
},
getActiveWorkspace: function() {
let active = global.screen.get_active_workspace_index();
return this._workspaces[active];
},
zoomToOverview: function() {
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].zoomToOverview();
},
zoomFromOverview: function() {
this.actor.remove_clip();
for (let w = 0; w < this._workspaces.length; w++)
this._workspaces[w].zoomFromOverview();
},
syncStacking: function(stackIndices) {
for (let i = 0; i < this._workspaces.length; i++)
this._workspaces[i].syncStacking(stackIndices);
},
_scrollToActive: function() {
let active = global.screen.get_active_workspace_index();
this._updateWorkspaceActors(true);
this._updateScrollAdjustment(active);
},
// 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._fullGeometry.height;
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.actor.show();
} else {
if (this._inDrag)
workspace.actor.visible = (Math.abs(w - active) <= 1);
else
workspace.actor.visible = (w == active);
}
}
},
_updateScrollAdjustment: function(index) {
if (this._scrolling)
return;
this._animatingScroll = true;
Tweener.addTween(this.scrollAdjustment, {
value: index,
time: WORKSPACE_SWITCH_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this,
function() {
this._animatingScroll = false;
})
});
},
_updateWorkspaces: function() {
let oldNumWorkspaces = this._workspaces.length;
let newNumWorkspaces = global.screen.n_workspaces;
this.scrollAdjustment.upper = newNumWorkspaces;
if (newNumWorkspaces > oldNumWorkspaces) {
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++) {
let metaWorkspace = global.screen.get_workspace_by_index(w);
let workspace = new Workspace.Workspace(metaWorkspace, this._monitorIndex);
this._workspaces.push(workspace);
this.actor.add_actor(workspace.actor);
}
if (this._fullGeometry)
this._updateWorkspaceActors(false);
} else if (newNumWorkspaces < oldNumWorkspaces) {
let nRemoved = (newNumWorkspaces - oldNumWorkspaces);
let removed = this._workspaces.splice(oldNumWorkspaces, nRemoved);
removed.forEach(function(workspace) {
workspace.destroy();
});
}
this._syncGeometry();
},
_activeWorkspaceChanged: function(wm, from, to, direction) {
if (this._scrolling)
return;
this._scrollToActive();
},
_onDestroy: function() {
this.parent();
this.scrollAdjustment.run_dispose();
Main.overview.disconnect(this._overviewShownId);
global.window_manager.disconnect(this._switchWorkspaceNotifyId);
global.screen.disconnect(this._updateWorkspacesId);
},
startSwipeScroll: function() {
this._scrolling = true;
},
endSwipeScroll: function() {
this._scrolling = false;
// Make sure title captions etc are shown as necessary
this._scrollToActive();
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) {
if (!this._workspaces[current]) {
// The current workspace was destroyed. This could happen
// when you are on the last empty workspace, and consolidate
// windows using the thumbnail bar.
// In that case, the intended behavior is to stay on the empty
// workspace, which is the last one, so pick it.
current = this._workspaces.length - 1;
}
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].actor.visible = Math.abs(i - adj.value) <= 1;
this._workspaces[i].actor.y += dy;
}
},
});
Signals.addSignalMethods(WorkspacesView.prototype);
const ExtraWorkspaceView = new Lang.Class({
Name: 'ExtraWorkspaceView',
Extends: WorkspacesViewBase,
_init: function(monitorIndex) {
this.parent(monitorIndex);
this._workspace = new Workspace.Workspace(null, monitorIndex);
this.actor.add_actor(this._workspace.actor);
},
_setReservedSlot: function(clone) {
this._workspace.setReservedSlot(clone);
},
_syncGeometry: function() {
this._workspace.setFullGeometry(this._fullGeometry);
this._workspace.setActualGeometry(this._actualGeometry);
},
zoomToOverview: function() {
this._workspace.zoomToOverview();
},
zoomFromOverview: function() {
this._workspace.zoomFromOverview();
},
syncStacking: function(stackIndices) {
this._workspace.syncStacking(stackIndices);
},
startSwipeScroll: function() {
},
endSwipeScroll: function() {
},
});
const WorkspacesDisplay = new Lang.Class({
Name: 'WorkspacesDisplay',
_init: function() {
this.actor = new St.Widget({ clip_to_allocation: true });
this.actor.connect('notify::allocation', Lang.bind(this, this._updateWorkspacesActualGeometry));
this.actor.connect('parent-set', Lang.bind(this, this._parentSet));
let clickAction = new Clutter.ClickAction()
clickAction.connect('clicked', Lang.bind(this, function(action) {
// 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.
if (action.get_button() == 1 &&
this._getPrimaryView().getActiveWorkspace().isEmpty())
Main.overview.hide();
}));
Main.overview.addAction(clickAction);
this.actor.bind_property('mapped', clickAction, 'enabled', GObject.BindingFlags.SYNC_CREATE);
let panAction = new Clutter.PanAction();
panAction.connect('pan', Lang.bind(this, this._onPan));
panAction.connect('gesture-begin', Lang.bind(this, function() {
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].startSwipeScroll();
return true;
}));
panAction.connect('gesture-cancel', Lang.bind(this, function() {
clickAction.release();
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].endSwipeScroll();
}));
panAction.connect('gesture-end', Lang.bind(this, function() {
clickAction.release();
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].endSwipeScroll();
}));
Main.overview.addAction(panAction);
this.actor.bind_property('mapped', panAction, 'enabled', GObject.BindingFlags.SYNC_CREATE);
this._primaryIndex = Main.layoutManager.primaryIndex;
this._workspacesViews = [];
this._primaryScrollAdjustment = null;
this._settings = new Gio.Settings({ schema: OVERRIDE_SCHEMA });
this._settings.connect('changed::workspaces-only-on-primary',
Lang.bind(this,
this._workspacesOnlyOnPrimaryChanged));
this._workspacesOnlyOnPrimaryChanged();
this._switchWorkspaceNotifyId = 0;
this._notifyOpacityId = 0;
this._scrollEventId = 0;
this._fullGeometry = null;
},
_onPan: function(action) {
let [dist, dx, dy] = action.get_motion_delta(0);
let adjustment = this._scrollAdjustment;
adjustment.value -= (dy / this.actor.height) * adjustment.page_size;
return false;
},
show: function() {
this._updateWorkspacesViews();
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].zoomToOverview();
this._restackedNotifyId =
Main.overview.connect('windows-restacked',
Lang.bind(this, this._onRestacked));
if (this._scrollEventId == 0)
this._scrollEventId = Main.overview.connect('scroll-event', Lang.bind(this, this._onScrollEvent));
},
zoomFromOverview: function() {
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].zoomFromOverview();
},
hide: function() {
if (this._restackedNotifyId > 0){
Main.overview.disconnect(this._restackedNotifyId);
this._restackedNotifyId = 0;
}
if (this._scrollEventId > 0) {
Main.overview.disconnect(this._scrollEventId);
this._scrollEventId = 0;
}
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].destroy();
this._workspacesViews = [];
},
_workspacesOnlyOnPrimaryChanged: function() {
this._workspacesOnlyOnPrimary = this._settings.get_boolean('workspaces-only-on-primary');
if (!Main.overview.visible)
return;
this._updateWorkspacesViews();
},
_updateWorkspacesViews: function() {
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].destroy();
this._workspacesViews = [];
let monitors = Main.layoutManager.monitors;
for (let i = 0; i < monitors.length; i++) {
let view;
if (this._workspacesOnlyOnPrimary && i != this._primaryIndex)
view = new ExtraWorkspaceView(i);
else
view = new WorkspacesView(i);
view.actor.connect('scroll-event', Lang.bind(this, this._onScrollEvent));
if (i == this._primaryIndex) {
this._scrollAdjustment = view.scrollAdjustment;
this._scrollAdjustment.connect('notify::value',
Lang.bind(this, this._scrollValueChanged));
}
this._workspacesViews.push(view);
Main.layoutManager.overviewGroup.add_actor(view.actor);
}
this._updateWorkspacesFullGeometry();
this._updateWorkspacesActualGeometry();
},
_scrollValueChanged: function() {
for (let i = 0; i < this._workspacesViews.length; i++) {
if (i == this._primaryIndex)
continue;
let adjustment = this._workspacesViews[i].scrollAdjustment;
if (!adjustment)
continue;
// the adjustments work in terms of workspaces, so the
// values map directly
adjustment.value = this._scrollAdjustment.value;
}
},
_getPrimaryView: function() {
if (!this._workspacesViews.length)
return null;
return this._workspacesViews[this._primaryIndex];
},
activeWorkspaceHasMaximizedWindows: function() {
return this._getPrimaryView().getActiveWorkspace().hasMaximizedWindows();
},
_parentSet: function(actor, oldParent) {
if (oldParent && this._notifyOpacityId)
oldParent.disconnect(this._notifyOpacityId);
this._notifyOpacityId = 0;
Meta.later_add(Meta.LaterType.BEFORE_REDRAW, Lang.bind(this,
function() {
let newParent = this.actor.get_parent();
if (!newParent)
return;
// This is kinda hackish - we want the primary view to
// appear as parent of this.actor, though in reality it
// is added directly to Main.layoutManager.overviewGroup
this._notifyOpacityId = newParent.connect('notify::opacity',
Lang.bind(this, function() {
let opacity = this.actor.get_parent().opacity;
let primaryView = this._getPrimaryView();
if (!primaryView)
return;
primaryView.actor.opacity = opacity;
primaryView.actor.visible = opacity != 0;
}));
}));
},
// This geometry should always be the fullest geometry
// the workspaces switcher can ever be allocated, as if
// the sliding controls were never slid in at all.
setWorkspacesFullGeometry: function(geom) {
this._fullGeometry = geom;
this._updateWorkspacesFullGeometry();
},
_updateWorkspacesFullGeometry: function() {
if (!this._workspacesViews.length)
return;
let monitors = Main.layoutManager.monitors;
for (let i = 0; i < monitors.length; i++) {
let geometry = (i == this._primaryIndex) ? this._fullGeometry : monitors[i];
this._workspacesViews[i].setFullGeometry(geometry);
}
},
_updateWorkspacesActualGeometry: function() {
if (!this._workspacesViews.length)
return;
let [x, y] = this.actor.get_transformed_position();
let width = this.actor.allocation.x2 - this.actor.allocation.x1;
let height = this.actor.allocation.y2 - this.actor.allocation.y1;
let primaryGeometry = { x: x, y: y, width: width, height: height };
let monitors = Main.layoutManager.monitors;
for (let i = 0; i < monitors.length; i++) {
let geometry = (i == this._primaryIndex) ? primaryGeometry : monitors[i];
this._workspacesViews[i].setActualGeometry(geometry);
}
},
_onRestacked: function(overview, stackIndices) {
for (let i = 0; i < this._workspacesViews.length; i++)
this._workspacesViews[i].syncStacking(stackIndices);
},
_onScrollEvent: function(actor, event) {
if (!this.actor.mapped)
return false;
let activeWs = global.screen.get_active_workspace();
let ws;
switch (event.get_scroll_direction()) {
case Clutter.ScrollDirection.UP:
ws = activeWs.get_neighbor(Meta.MotionDirection.UP);
break;
case Clutter.ScrollDirection.DOWN:
ws = activeWs.get_neighbor(Meta.MotionDirection.DOWN);
break;
default:
return false;
}
Main.wm.actionMoveWorkspace(ws);
return true;
}
});
Signals.addSignalMethods(WorkspacesDisplay.prototype);