f24e567dc4
While scaling the desktop background with the window previews represents workspaces quite intuitively, the approach is not without problems. As window previews in the overview behave quite differently to "real" windows, the representation of workspaces as miniature versions of "real" workspaces is flawed. The scaling also makes the transitions to and from the overview much more visually expensive, without adding much benefit. Leaving the background in place provides more visual stability to the transitions and emphasizes the distinctive behavior of elements in the overview. https://bugzilla.gnome.org/show_bug.cgi?id=634948
1585 lines
55 KiB
JavaScript
1585 lines
55 KiB
JavaScript
/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
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const Clutter = imports.gi.Clutter;
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const Lang = imports.lang;
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const Mainloop = imports.mainloop;
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const Meta = imports.gi.Meta;
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const Pango = imports.gi.Pango;
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const Shell = imports.gi.Shell;
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const St = imports.gi.St;
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const Signals = imports.signals;
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const DND = imports.ui.dnd;
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const Lightbox = imports.ui.lightbox;
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const Main = imports.ui.main;
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const Overview = imports.ui.overview;
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const Panel = imports.ui.panel;
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const Tweener = imports.ui.tweener;
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const FOCUS_ANIMATION_TIME = 0.15;
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const WINDOW_DND_SIZE = 256;
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const FRAME_COLOR = new Clutter.Color();
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FRAME_COLOR.from_pixel(0xffffffff);
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const SCROLL_SCALE_AMOUNT = 100 / 5;
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const LIGHTBOX_FADE_TIME = 0.1;
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const CLOSE_BUTTON_FADE_TIME = 0.1;
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const DRAGGING_WINDOW_OPACITY = 100;
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// Define a layout scheme for small window counts. For larger
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// counts we fall back to an algorithm. We need more schemes here
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// unless we have a really good algorithm.
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// Each triplet is [xCenter, yCenter, scale] where the scale
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// is relative to the width of the workspace.
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const POSITIONS = {
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1: [[0.5, 0.5, 0.95]],
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2: [[0.25, 0.5, 0.48], [0.75, 0.5, 0.48]],
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3: [[0.25, 0.25, 0.48], [0.75, 0.25, 0.48], [0.5, 0.75, 0.48]],
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4: [[0.25, 0.25, 0.47], [0.75, 0.25, 0.47], [0.75, 0.75, 0.47], [0.25, 0.75, 0.47]],
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5: [[0.165, 0.25, 0.32], [0.495, 0.25, 0.32], [0.825, 0.25, 0.32], [0.25, 0.75, 0.32], [0.75, 0.75, 0.32]]
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};
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// Used in _orderWindowsPermutations, 5! = 120 which is probably the highest we can go
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const POSITIONING_PERMUTATIONS_MAX = 5;
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function _interpolate(start, end, step) {
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return start + (end - start) * step;
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}
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function _clamp(value, min, max) {
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return Math.max(min, Math.min(max, value));
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}
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// Spacing between workspaces. At the moment, the same spacing is used
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// in both zoomed-in and zoomed-out views; this is slightly
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// metaphor-breaking, but the alternatives are also weird.
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const GRID_SPACING = 15;
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const FRAME_SIZE = GRID_SPACING / 3;
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function ScaledPoint(x, y, scaleX, scaleY) {
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[this.x, this.y, this.scaleX, this.scaleY] = arguments;
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}
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ScaledPoint.prototype = {
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getPosition : function() {
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return [this.x, this.y];
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},
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getScale : function() {
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return [this.scaleX, this.scaleY];
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},
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setPosition : function(x, y) {
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[this.x, this.y] = arguments;
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},
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setScale : function(scaleX, scaleY) {
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[this.scaleX, this.scaleY] = arguments;
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},
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interpPosition : function(other, step) {
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return [_interpolate(this.x, other.x, step),
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_interpolate(this.y, other.y, step)];
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},
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interpScale : function(other, step) {
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return [_interpolate(this.scaleX, other.scaleX, step),
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_interpolate(this.scaleY, other.scaleY, step)];
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}
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};
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function WindowClone(realWindow) {
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this._init(realWindow);
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}
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WindowClone.prototype = {
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_init : function(realWindow) {
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this.actor = new Clutter.Clone({ source: realWindow.get_texture(),
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reactive: true,
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x: realWindow.x,
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y: realWindow.y });
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this.actor._delegate = this;
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this.realWindow = realWindow;
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this.metaWindow = realWindow.meta_window;
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this.metaWindow._delegate = this;
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this.origX = realWindow.x;
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this.origY = realWindow.y;
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this._stackAbove = null;
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this.actor.connect('button-release-event',
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Lang.bind(this, this._onButtonRelease));
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this.actor.connect('scroll-event',
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Lang.bind(this, this._onScroll));
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this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
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this.actor.connect('leave-event',
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Lang.bind(this, this._onLeave));
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this._draggable = DND.makeDraggable(this.actor,
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{ restoreOnSuccess: true,
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dragActorMaxSize: WINDOW_DND_SIZE,
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dragActorOpacity: DRAGGING_WINDOW_OPACITY });
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this._draggable.connect('drag-begin', Lang.bind(this, this._onDragBegin));
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this._draggable.connect('drag-end', Lang.bind(this, this._onDragEnd));
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this.inDrag = false;
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this._windowIsZooming = false;
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this._zooming = false;
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this._selected = false;
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},
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setStackAbove: function (actor) {
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this._stackAbove = actor;
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if (this.inDrag || this._zooming)
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// We'll fix up the stack after the drag/zooming
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return;
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if (this._stackAbove == null)
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this.actor.lower_bottom();
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else
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this.actor.raise(this._stackAbove);
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},
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destroy: function () {
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this.actor.destroy();
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},
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zoomFromOverview: function() {
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if (this._zooming) {
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// If the user clicked on the zoomed window, or we are
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// returning there anyways, then we can zoom right to the
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// window, but if we are going to some other window, then
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// we need to cancel the zoom before animating, or it
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// will look funny.
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if (!this._selected &&
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this.metaWindow != global.screen.get_display().focus_window)
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this._zoomEnd();
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}
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},
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_onDestroy: function() {
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this.metaWindow._delegate = null;
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this.actor._delegate = null;
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if (this._zoomLightbox)
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this._zoomLightbox.destroy();
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if (this.inDrag) {
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this.emit('drag-end');
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this.inDrag = false;
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}
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this.disconnectAll();
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},
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_onLeave: function (actor, event) {
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if (this._zoomStep)
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this._zoomEnd();
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},
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_onScroll : function (actor, event) {
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let direction = event.get_scroll_direction();
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if (direction == Clutter.ScrollDirection.UP) {
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if (this._zoomStep == undefined)
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this._zoomStart();
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if (this._zoomStep < 100) {
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this._zoomStep += SCROLL_SCALE_AMOUNT;
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this._zoomUpdate();
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}
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} else if (direction == Clutter.ScrollDirection.DOWN) {
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if (this._zoomStep > 0) {
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this._zoomStep -= SCROLL_SCALE_AMOUNT;
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this._zoomStep = Math.max(0, this._zoomStep);
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this._zoomUpdate();
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}
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if (this._zoomStep <= 0.0)
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this._zoomEnd();
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}
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},
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_zoomUpdate : function () {
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[this.actor.x, this.actor.y] = this._zoomGlobalOrig.interpPosition(this._zoomTarget, this._zoomStep / 100);
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[this.actor.scale_x, this.actor.scale_y] = this._zoomGlobalOrig.interpScale(this._zoomTarget, this._zoomStep / 100);
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let [width, height] = this.actor.get_transformed_size();
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this.actor.x = _clamp(this.actor.x, 0, global.screen_width - width);
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this.actor.y = _clamp(this.actor.y, Panel.PANEL_HEIGHT, global.screen_height - height);
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},
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_zoomStart : function () {
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this._zooming = true;
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this.emit('zoom-start');
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if (!this._zoomLightbox)
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this._zoomLightbox = new Lightbox.Lightbox(global.stage,
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{ fadeTime: LIGHTBOX_FADE_TIME });
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this._zoomLightbox.show();
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this._zoomLocalOrig = new ScaledPoint(this.actor.x, this.actor.y, this.actor.scale_x, this.actor.scale_y);
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this._zoomGlobalOrig = new ScaledPoint();
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let parent = this._origParent = this.actor.get_parent();
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let [width, height] = this.actor.get_transformed_size();
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this._zoomGlobalOrig.setPosition.apply(this._zoomGlobalOrig, this.actor.get_transformed_position());
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this._zoomGlobalOrig.setScale(width / this.actor.width, height / this.actor.height);
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this.actor.reparent(global.stage);
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this._zoomLightbox.highlight(this.actor);
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[this.actor.x, this.actor.y] = this._zoomGlobalOrig.getPosition();
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[this.actor.scale_x, this.actor.scale_y] = this._zoomGlobalOrig.getScale();
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this.actor.raise_top();
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this._zoomTarget = new ScaledPoint(0, 0, 1.0, 1.0);
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this._zoomTarget.setPosition(this.actor.x - (this.actor.width - width) / 2, this.actor.y - (this.actor.height - height) / 2);
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this._zoomStep = 0;
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this._zoomUpdate();
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},
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_zoomEnd : function () {
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this._zooming = false;
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this.emit('zoom-end');
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this.actor.reparent(this._origParent);
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if (this._stackAbove == null)
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this.actor.lower_bottom();
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// If the workspace has been destroyed while we were reparented to
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// the stage, _stackAbove will be unparented and we can't raise our
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// actor above it - as we are bound to be destroyed anyway in that
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// case, we can skip that step
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else if (this._stackAbove.get_parent())
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this.actor.raise(this._stackAbove);
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[this.actor.x, this.actor.y] = this._zoomLocalOrig.getPosition();
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[this.actor.scale_x, this.actor.scale_y] = this._zoomLocalOrig.getScale();
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this._zoomLightbox.hide();
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this._zoomLocalPosition = undefined;
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this._zoomLocalScale = undefined;
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this._zoomGlobalPosition = undefined;
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this._zoomGlobalScale = undefined;
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this._zoomTargetPosition = undefined;
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this._zoomStep = undefined;
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},
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_onButtonRelease : function (actor, event) {
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this._selected = true;
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this.emit('selected', event.get_time());
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},
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_onDragBegin : function (draggable, time) {
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this.inDrag = true;
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this.emit('drag-begin');
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},
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_onDragEnd : function (draggable, time, snapback) {
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this.inDrag = false;
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// We may not have a parent if DnD completed successfully, in
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// which case our clone will shortly be destroyed and replaced
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// with a new one on the target workspace.
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if (this.actor.get_parent() != null) {
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if (this._stackAbove == null)
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this.actor.lower_bottom();
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else
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this.actor.raise(this._stackAbove);
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}
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this.emit('drag-end');
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}
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};
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Signals.addSignalMethods(WindowClone.prototype);
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/**
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* @windowClone: Corresponding window clone
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* @parentActor: The actor which will be the parent of all overlay items
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* such as app icon and window caption
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*/
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function WindowOverlay(windowClone, parentActor) {
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this._init(windowClone, parentActor);
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}
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WindowOverlay.prototype = {
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_init : function(windowClone, parentActor) {
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let metaWindow = windowClone.metaWindow;
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this._windowClone = windowClone;
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this._parentActor = parentActor;
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let title = new St.Label({ style_class: 'window-caption',
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text: metaWindow.title });
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title.clutter_text.ellipsize = Pango.EllipsizeMode.END;
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title._spacing = 0;
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this._updateCaptionId = metaWindow.connect('notify::title',
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Lang.bind(this, function(w) {
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this.title.text = w.title;
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}));
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let button = new St.Button({ style_class: 'window-close' });
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button._overlap = 0;
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this._idleToggleCloseId = 0;
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button.connect('clicked', Lang.bind(this, this._closeWindow));
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windowClone.actor.connect('destroy', Lang.bind(this, this._onDestroy));
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windowClone.actor.connect('enter-event',
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Lang.bind(this, this._onEnter));
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windowClone.actor.connect('leave-event',
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Lang.bind(this, this._onLeave));
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this._windowAddedId = 0;
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windowClone.connect('zoom-start', Lang.bind(this, this.hide));
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windowClone.connect('zoom-end', Lang.bind(this, this.show));
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button.hide();
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this.title = title;
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this.closeButton = button;
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parentActor.add_actor(this.title);
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parentActor.add_actor(this.closeButton);
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title.connect('style-changed',
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Lang.bind(this, this._onStyleChanged));
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button.connect('style-changed',
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Lang.bind(this, this._onStyleChanged));
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// force a style change if we are already on a stage - otherwise
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// the signal will be emitted normally when we are added
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if (parentActor.get_stage())
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this._onStyleChanged();
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},
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hide: function() {
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this.closeButton.hide();
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this.title.hide();
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},
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show: function() {
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let [x, y, mask] = global.get_pointer();
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let actor = global.stage.get_actor_at_pos(Clutter.PickMode.REACTIVE,
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x, y);
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if (actor == this._windowClone.actor) {
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this.closeButton.show();
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}
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this.title.show();
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},
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fadeIn: function() {
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this.title.opacity = 0;
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this.title.show();
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this._parentActor.raise_top();
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Tweener.addTween(this.title,
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{ opacity: 255,
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time: CLOSE_BUTTON_FADE_TIME,
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transition: 'easeOutQuad' });
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},
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chromeWidth: function () {
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return this.closeButton.width - this.closeButton._overlap;
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},
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chromeHeights: function () {
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return [this.closeButton.height - this.closeButton._overlap,
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this.title.height + this.title._spacing];
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},
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/**
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* @cloneX: x position of windowClone
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* @cloneY: y position of windowClone
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* @cloneWidth: width of windowClone
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* @cloneHeight height of windowClone
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*/
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// These parameters are not the values retrieved with
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// get_transformed_position() and get_transformed_size(),
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// as windowClone might be moving.
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// See Workspace._fadeInWindowOverlay
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updatePositions: function(cloneX, cloneY, cloneWidth, cloneHeight) {
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let button = this.closeButton;
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let title = this.title;
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let buttonX = cloneX + cloneWidth - button._overlap;
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let buttonY = cloneY - button.height + button._overlap;
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button.set_position(Math.floor(buttonX), Math.floor(buttonY));
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if (!title.fullWidth)
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title.fullWidth = title.width;
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title.width = Math.min(title.fullWidth, cloneWidth);
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let titleX = cloneX + (cloneWidth - title.width) / 2;
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let titleY = cloneY + cloneHeight + title._spacing;
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title.set_position(Math.floor(titleX), Math.floor(titleY));
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},
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_closeWindow: function(actor) {
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let metaWindow = this._windowClone.metaWindow;
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this._workspace = metaWindow.get_workspace();
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this._windowAddedId = this._workspace.connect('window-added',
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Lang.bind(this,
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this._onWindowAdded));
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metaWindow.delete(global.get_current_time());
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},
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_onWindowAdded: function(workspace, win) {
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let metaWindow = this._windowClone.metaWindow;
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if (win.get_transient_for() == metaWindow) {
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workspace.disconnect(this._windowAddedId);
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this._windowAddedId = 0;
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// use an idle handler to avoid mapping problems -
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// see comment in Workspace._windowAdded
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Mainloop.idle_add(Lang.bind(this,
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function() {
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this._windowClone.emit('selected');
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return false;
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}));
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}
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},
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_onDestroy: function() {
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if (this._windowAddedId > 0) {
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this._workspace.disconnect(this._windowAddedId);
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this._windowAddedId = 0;
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}
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if (this._idleToggleCloseId > 0) {
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Mainloop.source_remove(this._idleToggleCloseId);
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this._idleToggleCloseId = 0;
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}
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this._windowClone.metaWindow.disconnect(this._updateCaptionId);
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this.title.destroy();
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this.closeButton.destroy();
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},
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_onEnter: function() {
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this._parentActor.raise_top();
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this.closeButton.show();
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this.emit('show-close-button');
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},
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_onLeave: function() {
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if (this._idleToggleCloseId == 0)
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this._idleToggleCloseId = Mainloop.timeout_add(750, Lang.bind(this, this._idleToggleCloseButton));
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},
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_idleToggleCloseButton: function() {
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this._idleToggleCloseId = 0;
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if (!this._windowClone.actor.has_pointer &&
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!this.closeButton.has_pointer)
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this.closeButton.hide();
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return false;
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},
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hideCloseButton: function() {
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if (this._idleToggleCloseId > 0) {
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Mainloop.source_remove(this._idleToggleCloseId);
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this._idleToggleCloseId = 0;
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}
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this.closeButton.hide();
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},
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_onStyleChanged: function() {
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let titleNode = this.title.get_theme_node();
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this.title._spacing = titleNode.get_length('-shell-caption-spacing');
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let closeNode = this.closeButton.get_theme_node();
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|
this.closeButton._overlap = closeNode.get_length('-shell-close-overlap');
|
|
|
|
this._parentActor.queue_relayout();
|
|
}
|
|
};
|
|
Signals.addSignalMethods(WindowOverlay.prototype);
|
|
|
|
const WindowPositionFlags = {
|
|
ZOOM: 1 << 0,
|
|
ANIMATE: 1 << 1
|
|
};
|
|
|
|
/**
|
|
* @metaWorkspace: a #Meta.Workspace
|
|
*/
|
|
function Workspace(metaWorkspace) {
|
|
this._init(metaWorkspace);
|
|
}
|
|
|
|
Workspace.prototype = {
|
|
_init : function(metaWorkspace) {
|
|
// When dragging a window, we use this slot for reserve space.
|
|
this._reservedSlot = null;
|
|
this.metaWorkspace = metaWorkspace;
|
|
this._windowOverlaysGroup = new Clutter.Group();
|
|
// Without this the drop area will be overlapped.
|
|
this._windowOverlaysGroup.set_size(0, 0);
|
|
|
|
this.actor = new Clutter.Group({ reactive: true });
|
|
this.actor._delegate = this;
|
|
|
|
this.actor.connect('destroy', Lang.bind(this, this._onDestroy));
|
|
this.actor.connect('button-release-event', Lang.bind(this,
|
|
function(actor, event) {
|
|
// 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 (this._windows.length == 0) {
|
|
this.metaWorkspace.activate(event.get_time());
|
|
Main.overview.hide();
|
|
}
|
|
}));
|
|
|
|
// Items in _windowOverlaysGroup should not be scaled, so we don't
|
|
// add them to this.actor, but to its parent whenever it changes
|
|
this.actor.connect('parent-set', Lang.bind(this, this._onParentSet));
|
|
|
|
// Auto-sizing is unreliable in the presence of ClutterClone, so rather than
|
|
// implicitly counting on the workspace actor to be sized to the size of the
|
|
// included desktop actor clone, set the size explicitly to the screen size.
|
|
// See http://bugzilla.openedhand.com/show_bug.cgi?id=1755
|
|
this.actor.width = global.screen_width;
|
|
this.actor.height = global.screen_height;
|
|
this.scale = 1.0;
|
|
|
|
let windows = global.get_window_actors().filter(this._isMyWindow, this);
|
|
|
|
// Create clones for remaining windows that should be
|
|
// visible in the Overview
|
|
this._windows = [];
|
|
this._windowOverlays = [];
|
|
for (let i = 0; i < windows.length; i++) {
|
|
if (this._isOverviewWindow(windows[i])) {
|
|
this._addWindowClone(windows[i]);
|
|
}
|
|
}
|
|
|
|
// A filter for what windows we display
|
|
this._showOnlyWindows = null;
|
|
|
|
// Track window changes
|
|
this._windowAddedId = this.metaWorkspace.connect('window-added',
|
|
Lang.bind(this, this._windowAdded));
|
|
this._windowRemovedId = this.metaWorkspace.connect('window-removed',
|
|
Lang.bind(this, this._windowRemoved));
|
|
this._repositionWindowsId = 0;
|
|
|
|
this._visible = false;
|
|
|
|
this._frame = null;
|
|
|
|
this.leavingOverview = false;
|
|
},
|
|
|
|
_lookupIndex: function (metaWindow) {
|
|
for (let i = 0; i < this._windows.length; i++) {
|
|
if (this._windows[i].metaWindow == metaWindow) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
},
|
|
|
|
_onParentSet: function(actor, old_parent) {
|
|
let new_parent = this.actor.get_parent();
|
|
if (new_parent == null)
|
|
return;
|
|
|
|
if (old_parent)
|
|
this._windowOverlaysGroup.reparent(new_parent);
|
|
else
|
|
new_parent.add_actor(this._windowOverlaysGroup);
|
|
},
|
|
|
|
/**
|
|
* lookupCloneForMetaWindow:
|
|
* @metaWindow: A #MetaWindow
|
|
*
|
|
* Given a #MetaWindow instance, find the WindowClone object
|
|
* which represents it in the workspaces display.
|
|
*/
|
|
lookupCloneForMetaWindow: function (metaWindow) {
|
|
let index = this._lookupIndex (metaWindow);
|
|
return index < 0 ? null : this._windows[index];
|
|
},
|
|
|
|
containsMetaWindow: function (metaWindow) {
|
|
return this._lookupIndex(metaWindow) >= 0;
|
|
},
|
|
|
|
setShowOnlyWindows: function(showOnlyWindows, reposition) {
|
|
this._showOnlyWindows = showOnlyWindows;
|
|
this._resetCloneVisibility();
|
|
if (reposition)
|
|
this.positionWindows(WindowPositionFlags.ANIMATE);
|
|
},
|
|
|
|
/**
|
|
* setLightboxMode:
|
|
* @showLightbox: If true, dim background and allow highlighting a specific window
|
|
*
|
|
* This function also resets the highlighted window state.
|
|
*/
|
|
setLightboxMode: function (showLightbox) {
|
|
if (!this._lightbox)
|
|
this._lightbox = new Lightbox.Lightbox(this.actor,
|
|
{ fadeTime: LIGHTBOX_FADE_TIME });
|
|
|
|
if (showLightbox)
|
|
this._lightbox.show();
|
|
else
|
|
this._lightbox.hide();
|
|
|
|
if (this._frame)
|
|
this._frame.set_opacity(showLightbox ? 150 : 255);
|
|
},
|
|
|
|
/**
|
|
* setHighlightWindow:
|
|
* @metaWindow: A #MetaWindow
|
|
*
|
|
* Draw the user's attention to the given window @metaWindow.
|
|
*/
|
|
setHighlightWindow: function (metaWindow) {
|
|
if (!this._lightbox)
|
|
return;
|
|
|
|
let actor;
|
|
if (metaWindow != null) {
|
|
let clone = this.lookupCloneForMetaWindow(metaWindow);
|
|
actor = clone.actor;
|
|
}
|
|
this._lightbox.highlight(actor);
|
|
},
|
|
|
|
// Mark the workspace selected/not-selected
|
|
setSelected : function(selected) {
|
|
// Don't draw a frame if we only have one workspace
|
|
if (selected && global.screen.n_workspaces > 1) {
|
|
if (this._frame)
|
|
return;
|
|
|
|
// FIXME: do something cooler-looking using clutter-cairo
|
|
this._frame = new Clutter.Rectangle({ color: FRAME_COLOR });
|
|
this.actor.add_actor(this._frame);
|
|
this._frame.set_position(- FRAME_SIZE / this.actor.scale_x,
|
|
- FRAME_SIZE / this.actor.scale_y);
|
|
this._frame.set_size(this.actor.width + 2 * FRAME_SIZE / this.actor.scale_x,
|
|
this.actor.height + 2 * FRAME_SIZE / this.actor.scale_y);
|
|
this._frame.lower_bottom();
|
|
|
|
this._framePosHandler = this.actor.connect('notify::scale-x', Lang.bind(this, this._updateFramePosition));
|
|
} else {
|
|
if (!this._frame)
|
|
return;
|
|
this.actor.disconnect(this._framePosHandler);
|
|
this._frame.destroy();
|
|
this._frame = null;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* setReactive:
|
|
* @reactive: %true iff the workspace should be reactive
|
|
*
|
|
* Set the workspace (desktop) reactive
|
|
**/
|
|
setReactive: function(reactive) {
|
|
this.actor.reactive = reactive;
|
|
},
|
|
|
|
_updateFramePosition : function() {
|
|
this._frame.set_position(- FRAME_SIZE / this.actor.scale_x,
|
|
- FRAME_SIZE / this.actor.scale_y);
|
|
this._frame.set_size(this.actor.width + 2 * FRAME_SIZE / this.actor.scale_x,
|
|
this.actor.height + 2 * FRAME_SIZE / this.actor.scale_y);
|
|
},
|
|
|
|
_isCloneVisible: function(clone) {
|
|
return this._showOnlyWindows == null || (clone.metaWindow in this._showOnlyWindows);
|
|
},
|
|
|
|
/**
|
|
* _getVisibleClones:
|
|
*
|
|
* Returns a list WindowClone objects where the clone isn't filtered
|
|
* out by any application filter.
|
|
* The returned array will always be newly allocated; it is not in any
|
|
* defined order, and thus it's convenient to call .sort() with your
|
|
* choice of sorting function.
|
|
*/
|
|
_getVisibleClones: function() {
|
|
let visible = [];
|
|
|
|
for (let i = 0; i < this._windows.length; i++) {
|
|
let clone = this._windows[i];
|
|
|
|
if (!this._isCloneVisible(clone))
|
|
continue;
|
|
|
|
visible.push(clone);
|
|
}
|
|
return visible;
|
|
},
|
|
|
|
_resetCloneVisibility: function () {
|
|
for (let i = 0; i < this._windows.length; i++) {
|
|
let clone = this._windows[i];
|
|
let overlay = this._windowOverlays[i];
|
|
|
|
if (!this._isCloneVisible(clone)) {
|
|
clone.actor.hide();
|
|
overlay.hide();
|
|
} else {
|
|
clone.actor.show();
|
|
}
|
|
}
|
|
},
|
|
|
|
// Only use this for n <= 20 say
|
|
_factorial: function(n) {
|
|
let result = 1;
|
|
for (let i = 2; i <= n; i++)
|
|
result *= i;
|
|
return result;
|
|
},
|
|
|
|
/**
|
|
* _permutation:
|
|
* @permutationIndex: An integer from [0, list.length!)
|
|
* @list: (inout): Array of objects to permute; will be modified in place
|
|
*
|
|
* Given an integer between 0 and length of array, re-order the array in-place
|
|
* into a permutation denoted by the index.
|
|
*/
|
|
_permutation: function(permutationIndex, list) {
|
|
for (let j = 2; j <= list.length; j++) {
|
|
let firstIndex = (permutationIndex % j);
|
|
let secondIndex = j - 1;
|
|
// Swap
|
|
let tmp = list[firstIndex];
|
|
list[firstIndex] = list[secondIndex];
|
|
list[secondIndex] = tmp;
|
|
permutationIndex = Math.floor(permutationIndex / j);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* _forEachPermutations:
|
|
* @list: Array
|
|
* @func: Function which takes a single array argument
|
|
*
|
|
* Call @func with each permutation of @list as an argument.
|
|
*/
|
|
_forEachPermutations: function(list, func) {
|
|
let nCombinations = this._factorial(list.length);
|
|
for (let i = 0; i < nCombinations; i++) {
|
|
let listCopy = list.concat();
|
|
this._permutation(i, listCopy);
|
|
func(listCopy);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* _computeWindowMotion:
|
|
* @actor: A #WindowClone's #ClutterActor
|
|
* @slot: An element of #POSITIONS
|
|
* @slotGeometry: Layout of @slot
|
|
*
|
|
* Returns a number corresponding to how much perceived motion
|
|
* would be involved in moving the window to the given slot.
|
|
* Currently this is the square of the distance between the
|
|
* centers.
|
|
*/
|
|
_computeWindowMotion: function (actor, slot) {
|
|
let [xCenter, yCenter, fraction] = slot;
|
|
let xDelta, yDelta, distanceSquared;
|
|
let actorWidth, actorHeight;
|
|
|
|
actorWidth = actor.width * actor.scale_x;
|
|
actorHeight = actor.height * actor.scale_y;
|
|
xDelta = actor.x + actorWidth / 2.0 - xCenter * global.screen_width;
|
|
yDelta = actor.y + actorHeight / 2.0 - yCenter * global.screen_height;
|
|
distanceSquared = xDelta * xDelta + yDelta * yDelta;
|
|
|
|
return distanceSquared;
|
|
},
|
|
|
|
/**
|
|
* _orderWindowsPermutations:
|
|
*
|
|
* Iterate over all permutations of the windows, and determine the
|
|
* permutation which has the least total motion.
|
|
*/
|
|
_orderWindowsPermutations: function (clones, slots) {
|
|
let minimumMotionPermutation = null;
|
|
let minimumMotion = -1;
|
|
let permIndex = 0;
|
|
this._forEachPermutations(clones, Lang.bind(this, function (permutation) {
|
|
let motion = 0;
|
|
for (let i = 0; i < permutation.length; i++) {
|
|
let cloneActor = permutation[i].actor;
|
|
let slot = slots[i];
|
|
|
|
let delta = this._computeWindowMotion(cloneActor, slot);
|
|
|
|
motion += delta;
|
|
}
|
|
|
|
if (minimumMotionPermutation == null || motion < minimumMotion) {
|
|
minimumMotionPermutation = permutation;
|
|
minimumMotion = motion;
|
|
}
|
|
permIndex++;
|
|
}));
|
|
return minimumMotionPermutation;
|
|
},
|
|
|
|
/**
|
|
* _orderWindowsGreedy:
|
|
*
|
|
* Iterate over available slots in order, placing into each one the window
|
|
* we find with the smallest motion to that slot.
|
|
*/
|
|
_orderWindowsGreedy: function(clones, slots) {
|
|
let result = [];
|
|
let slotIndex = 0;
|
|
// Copy since we mutate below
|
|
let clonesCopy = clones.concat();
|
|
for (let i = 0; i < slots.length; i++) {
|
|
let slot = slots[i];
|
|
let minimumMotionIndex = -1;
|
|
let minimumMotion = -1;
|
|
for (let j = 0; j < clonesCopy.length; j++) {
|
|
let cloneActor = clonesCopy[j].actor;
|
|
let delta = this._computeWindowMotion(cloneActor, slot);
|
|
if (minimumMotionIndex == -1 || delta < minimumMotion) {
|
|
minimumMotionIndex = j;
|
|
minimumMotion = delta;
|
|
}
|
|
}
|
|
result.push(clonesCopy[minimumMotionIndex]);
|
|
clonesCopy.splice(minimumMotionIndex, 1);
|
|
}
|
|
return result;
|
|
},
|
|
|
|
/**
|
|
* _orderWindowsByMotionAndStartup:
|
|
* @windows: Array of #MetaWindow
|
|
* @slots: Array of slots
|
|
*
|
|
* Returns a copy of @windows, ordered in such a way that they require least motion
|
|
* to move to the final screen coordinates of @slots. Ties are broken in a stable
|
|
* fashion by the order in which the windows were created.
|
|
*/
|
|
_orderWindowsByMotionAndStartup: function(clones, slots) {
|
|
clones.sort(function(w1, w2) {
|
|
return w2.metaWindow.get_stable_sequence() - w1.metaWindow.get_stable_sequence();
|
|
});
|
|
if (clones.length <= POSITIONING_PERMUTATIONS_MAX)
|
|
return this._orderWindowsPermutations(clones, slots);
|
|
else
|
|
return this._orderWindowsGreedy(clones, slots);
|
|
},
|
|
|
|
/**
|
|
* _getSlotRelativeGeometry:
|
|
* @slot: A layout slot
|
|
*
|
|
* Returns: the workspace-relative [x, y, width, height]
|
|
* of a given window layout slot.
|
|
*/
|
|
_getSlotRelativeGeometry: function(slot) {
|
|
let [xCenter, yCenter, fraction] = slot;
|
|
|
|
let width = global.screen_width * fraction;
|
|
let height = global.screen_height * fraction;
|
|
|
|
let x = xCenter * global.screen_width - width / 2;
|
|
let y = yCenter * global.screen_height - height / 2;
|
|
|
|
return [x, y, width, height];
|
|
},
|
|
|
|
/**
|
|
* _computeWindowRelativeLayout:
|
|
* @metaWindow: A #MetaWindow
|
|
* @slot: A layout slot
|
|
*
|
|
* Given a window and slot to fit it in, compute its
|
|
* workspace-relative [x, y, scale] where scale applies
|
|
* to both X and Y directions.
|
|
*/
|
|
_computeWindowRelativeLayout: function(metaWindow, slot) {
|
|
let [xCenter, yCenter, fraction] = slot;
|
|
let [x, y, width, height] = this._getSlotRelativeGeometry(slot);
|
|
|
|
xCenter = xCenter * global.screen_width;
|
|
|
|
let rect = new Meta.Rectangle();
|
|
metaWindow.get_outer_rect(rect);
|
|
let buttonOuterHeight, captionHeight;
|
|
let buttonOuterWidth = 0;
|
|
|
|
if (this._windowOverlays[0]) {
|
|
[buttonOuterHeight, captionHeight] = this._windowOverlays[0].chromeHeights();
|
|
buttonOuterWidth = this._windowOverlays[0].chromeWidth() / this.scale;
|
|
} else
|
|
[buttonOuterHeight, captionHeight] = [0, 0];
|
|
buttonOuterHeight /= this.scale;
|
|
captionHeight /= this.scale;
|
|
|
|
let desiredWidth = global.screen_width * fraction;
|
|
let desiredHeight = global.screen_height * fraction;
|
|
let scale = Math.min((desiredWidth - buttonOuterWidth) / rect.width,
|
|
(desiredHeight - buttonOuterHeight - captionHeight) / rect.height,
|
|
1.0 / this.scale);
|
|
|
|
x = Math.floor(xCenter - 0.5 * scale * rect.width);
|
|
|
|
// We want to center the window in case we have just one
|
|
if (metaWindow.get_workspace().n_windows == 1)
|
|
y = Math.floor(yCenter * global.screen_height - 0.5 * scale * rect.height);
|
|
else
|
|
y = Math.floor(y + height - rect.height * scale - captionHeight);
|
|
|
|
return [x, y, scale];
|
|
},
|
|
|
|
setReservedSlot: function(clone) {
|
|
if (clone && this.containsMetaWindow(clone.metaWindow)) {
|
|
this._reservedSlot = null;
|
|
this.positionWindows(WindowPositionFlags.ANIMATE);
|
|
return;
|
|
}
|
|
if (clone)
|
|
this._reservedSlot = clone;
|
|
else
|
|
this._reservedSlot = null;
|
|
this.positionWindows(WindowPositionFlags.ANIMATE);
|
|
},
|
|
|
|
/**
|
|
* positionWindows:
|
|
* @flags:
|
|
* ZOOM - workspace is moving at the same time and we need to take that into account.
|
|
* ANIMATE - Indicates that we need animate changing position.
|
|
*/
|
|
positionWindows : function(flags) {
|
|
if (this._repositionWindowsId > 0) {
|
|
Mainloop.source_remove(this._repositionWindowsId);
|
|
this._repositionWindowsId = 0;
|
|
}
|
|
|
|
let totalVisible = 0;
|
|
|
|
let visibleClones = this._getVisibleClones();
|
|
if (this._reservedSlot)
|
|
visibleClones.push(this._reservedSlot);
|
|
|
|
let workspaceZooming = flags & WindowPositionFlags.ZOOM;
|
|
let animate = flags & WindowPositionFlags.ANIMATE;
|
|
|
|
// Start the animations
|
|
let slots = this._computeAllWindowSlots(visibleClones.length);
|
|
visibleClones = this._orderWindowsByMotionAndStartup(visibleClones, slots);
|
|
|
|
for (let i = 0; i < visibleClones.length; i++) {
|
|
let slot = slots[i];
|
|
let clone = visibleClones[i];
|
|
let metaWindow = clone.metaWindow;
|
|
let mainIndex = this._lookupIndex(metaWindow);
|
|
let overlay = this._windowOverlays[mainIndex];
|
|
|
|
// Positioning a window currently being dragged must be avoided;
|
|
// we'll just leave a blank spot in the layout for it.
|
|
if (clone.inDrag)
|
|
continue;
|
|
|
|
let [x, y, scale] = this._computeWindowRelativeLayout(metaWindow, slot);
|
|
|
|
if (overlay)
|
|
overlay.hide();
|
|
if (animate) {
|
|
if (!metaWindow.showing_on_its_workspace()) {
|
|
/* Hidden windows should fade in and grow
|
|
* therefore we need to resize them now so they
|
|
* can be scaled up later */
|
|
if (workspaceZooming) {
|
|
clone.actor.opacity = 0;
|
|
clone.actor.scale_x = 0;
|
|
clone.actor.scale_y = 0;
|
|
clone.actor.x = x;
|
|
clone.actor.y = y;
|
|
}
|
|
|
|
// Make the window slightly transparent to indicate it's hidden
|
|
Tweener.addTween(clone.actor,
|
|
{ opacity: 255,
|
|
time: Overview.ANIMATION_TIME,
|
|
transition: 'easeInQuad'
|
|
});
|
|
}
|
|
|
|
Tweener.addTween(clone.actor,
|
|
{ x: x,
|
|
y: y,
|
|
scale_x: scale,
|
|
scale_y: scale,
|
|
workspace_relative: workspaceZooming ? this : null,
|
|
time: Overview.ANIMATION_TIME,
|
|
transition: 'easeOutQuad',
|
|
onComplete: Lang.bind(this, function() {
|
|
this._fadeInWindowOverlay(clone, overlay);
|
|
})
|
|
});
|
|
} else {
|
|
clone.actor.set_position(x, y);
|
|
clone.actor.set_scale(scale, scale);
|
|
this._fadeInWindowOverlay(clone, overlay);
|
|
}
|
|
}
|
|
},
|
|
|
|
syncStacking: function(stackIndices) {
|
|
let visibleClones = this._getVisibleClones();
|
|
visibleClones.sort(function (a, b) { return stackIndices[a.metaWindow.get_stable_sequence()] - stackIndices[b.metaWindow.get_stable_sequence()]; });
|
|
|
|
for (let i = 0; i < visibleClones.length; i++) {
|
|
let clone = visibleClones[i];
|
|
let metaWindow = clone.metaWindow;
|
|
if (i == 0) {
|
|
clone.setStackAbove(null);
|
|
} else {
|
|
let previousClone = visibleClones[i - 1];
|
|
clone.setStackAbove(previousClone.actor);
|
|
}
|
|
}
|
|
},
|
|
|
|
_fadeInWindowOverlay: function(clone, overlay) {
|
|
if (clone.inDrag)
|
|
return;
|
|
|
|
// This is a little messy and complicated because when we
|
|
// start the fade-in we may not have done the final positioning
|
|
// of the workspaces. (Tweener doesn't necessarily finish
|
|
// all animations before calling onComplete callbacks.)
|
|
// So we need to manually compute where the window will
|
|
// be after the workspace animation finishes.
|
|
let [cloneX, cloneY] = clone.actor.get_position();
|
|
let [cloneWidth, cloneHeight] = clone.actor.get_size();
|
|
cloneX = this.gridX + this.scale * cloneX;
|
|
cloneY = this.gridY + this.scale * cloneY;
|
|
cloneWidth = this.scale * clone.actor.scale_x * cloneWidth;
|
|
cloneHeight = this.scale * clone.actor.scale_y * cloneHeight;
|
|
|
|
if (!this._windowOverlaysGroup.visible)
|
|
this._windowOverlaysGroup.show();
|
|
|
|
if (overlay) {
|
|
overlay.updatePositions(cloneX, cloneY, cloneWidth, cloneHeight);
|
|
overlay.fadeIn();
|
|
}
|
|
},
|
|
|
|
_fadeInAllOverlays: function() {
|
|
for (let i = 0; i < this._windows.length; i++) {
|
|
let clone = this._windows[i];
|
|
let overlay = this._windowOverlays[i];
|
|
if (this._showOnlyWindows != null && !(clone.metaWindow in this._showOnlyWindows))
|
|
continue;
|
|
this._fadeInWindowOverlay(clone, overlay);
|
|
}
|
|
},
|
|
|
|
_hideAllOverlays: function() {
|
|
for (let i = 0; i < this._windows.length; i++) {
|
|
let overlay = this._windowOverlays[i];
|
|
overlay.hide();
|
|
}
|
|
},
|
|
|
|
_delayedWindowRepositioning: function() {
|
|
if (this._windowIsZooming)
|
|
return true;
|
|
|
|
let [x, y, mask] = global.get_pointer();
|
|
let wsWidth = this.actor.width * this.scale;
|
|
let wsHeight = this.actor.height * this.scale;
|
|
|
|
let pointerHasMoved = (this._cursorX != x && this._cursorY != y);
|
|
let inWorkspace = (this.gridX < x && x < this.gridX + wsWidth &&
|
|
this.gridY < y && y < this.gridY + wsHeight);
|
|
|
|
if (pointerHasMoved && inWorkspace) {
|
|
// store current cursor position
|
|
this._cursorX = x;
|
|
this._cursorY = y;
|
|
return true;
|
|
}
|
|
|
|
this.positionWindows(WindowPositionFlags.ANIMATE);
|
|
return false;
|
|
},
|
|
|
|
showWindowsOverlays: function() {
|
|
this._windowOverlaysGroup.show();
|
|
this._fadeInAllOverlays();
|
|
},
|
|
|
|
hideWindowsOverlays: function() {
|
|
this._windowOverlaysGroup.hide();
|
|
},
|
|
|
|
_windowRemoved : function(metaWorkspace, metaWin) {
|
|
let win = metaWin.get_compositor_private();
|
|
|
|
// find the position of the window in our list
|
|
let index = this._lookupIndex (metaWin);
|
|
|
|
if (index == -1)
|
|
return;
|
|
|
|
let clone = this._windows[index];
|
|
|
|
this._windows.splice(index, 1);
|
|
this._windowOverlays.splice(index, 1);
|
|
|
|
// If metaWin.get_compositor_private() returned non-NULL, that
|
|
// means the window still exists (and is just being moved to
|
|
// another workspace or something), so set its overviewHint
|
|
// accordingly. (If it returned NULL, then the window is being
|
|
// destroyed; we'd like to animate this, but it's too late at
|
|
// this point.)
|
|
if (win) {
|
|
let [stageX, stageY] = clone.actor.get_transformed_position();
|
|
let [stageWidth, stageHeight] = clone.actor.get_transformed_size();
|
|
win._overviewHint = {
|
|
x: stageX,
|
|
y: stageY,
|
|
scale: stageWidth / clone.actor.width
|
|
};
|
|
}
|
|
clone.destroy();
|
|
|
|
|
|
// We need to reposition the windows; to avoid shuffling windows
|
|
// around while the user is interacting with the workspace, we delay
|
|
// the positioning until the pointer remains still for at least 750 ms
|
|
// or is moved outside the workspace
|
|
|
|
// remove old handler
|
|
if (this._repositionWindowsId > 0) {
|
|
Mainloop.source_remove(this._repositionWindowsId);
|
|
this._repositionWindowsId = 0;
|
|
}
|
|
|
|
// setup new handler
|
|
let [x, y, mask] = global.get_pointer();
|
|
this._cursorX = x;
|
|
this._cursorY = y;
|
|
|
|
this._repositionWindowsId = Mainloop.timeout_add(750,
|
|
Lang.bind(this, this._delayedWindowRepositioning));
|
|
},
|
|
|
|
_windowAdded : function(metaWorkspace, metaWin) {
|
|
if (this.leavingOverview)
|
|
return;
|
|
|
|
let win = metaWin.get_compositor_private();
|
|
|
|
if (!win) {
|
|
// Newly-created windows are added to a workspace before
|
|
// the compositor finds out about them...
|
|
Mainloop.idle_add(Lang.bind(this,
|
|
function () {
|
|
if (this.actor && metaWin.get_compositor_private())
|
|
this._windowAdded(metaWorkspace, metaWin);
|
|
return false;
|
|
}));
|
|
return;
|
|
}
|
|
|
|
if (!this._isOverviewWindow(win))
|
|
return;
|
|
|
|
let clone = this._addWindowClone(win);
|
|
|
|
if (win._overviewHint) {
|
|
let x = (win._overviewHint.x - this.actor.x) / this.scale;
|
|
let y = (win._overviewHint.y - this.actor.y) / this.scale;
|
|
let scale = win._overviewHint.scale / this.scale;
|
|
delete win._overviewHint;
|
|
|
|
clone.actor.set_position (x, y);
|
|
clone.actor.set_scale (scale, scale);
|
|
}
|
|
|
|
this.positionWindows(WindowPositionFlags.ANIMATE);
|
|
},
|
|
|
|
// check for maximized windows on the workspace
|
|
hasMaximizedWindows: function() {
|
|
for (let i = 0; i < this._windows.length; i++) {
|
|
let metaWindow = this._windows[i].metaWindow;
|
|
if (metaWindow.showing_on_its_workspace() &&
|
|
metaWindow.maximized_horizontally &&
|
|
metaWindow.maximized_vertically)
|
|
return true;
|
|
}
|
|
return false;
|
|
},
|
|
|
|
// Animate the full-screen to Overview transition.
|
|
zoomToOverview : function() {
|
|
this.actor.set_position(this.gridX, this.gridY);
|
|
this.actor.set_scale(this.scale, this.scale);
|
|
|
|
// Position and scale the windows.
|
|
if (Main.overview.animationInProgress)
|
|
this.positionWindows(WindowPositionFlags.ANIMATE | WindowPositionFlags.ZOOM);
|
|
else
|
|
this.positionWindows(WindowPositionFlags.ZOOM);
|
|
|
|
this._visible = true;
|
|
},
|
|
|
|
// Animates the return from Overview mode
|
|
zoomFromOverview : function() {
|
|
this.leavingOverview = true;
|
|
|
|
this._hideAllOverlays();
|
|
|
|
if (this._repositionWindowsId > 0) {
|
|
Mainloop.source_remove(this._repositionWindowsId);
|
|
this._repositionWindowsId = 0;
|
|
}
|
|
this._overviewHiddenId = Main.overview.connect('hidden', Lang.bind(this,
|
|
this._doneLeavingOverview));
|
|
|
|
// Position and scale the windows.
|
|
for (let i = 0; i < this._windows.length; i++) {
|
|
let clone = this._windows[i];
|
|
|
|
clone.zoomFromOverview();
|
|
|
|
if (clone.metaWindow.showing_on_its_workspace()) {
|
|
Tweener.addTween(clone.actor,
|
|
{ x: clone.origX,
|
|
y: clone.origY,
|
|
scale_x: 1.0,
|
|
scale_y: 1.0,
|
|
workspace_relative: this,
|
|
time: Overview.ANIMATION_TIME,
|
|
opacity: 255,
|
|
transition: 'easeOutQuad'
|
|
});
|
|
} else {
|
|
// The window is hidden, make it shrink and fade it out
|
|
Tweener.addTween(clone.actor,
|
|
{ scale_x: 0,
|
|
scale_y: 0,
|
|
opacity: 0,
|
|
workspace_relative: this,
|
|
time: Overview.ANIMATION_TIME,
|
|
transition: 'easeOutQuad'
|
|
});
|
|
}
|
|
}
|
|
|
|
this._visible = false;
|
|
},
|
|
|
|
// Animates grid shrinking/expanding when a row or column
|
|
// of workspaces is added or removed
|
|
resizeToGrid : function (oldScale) {
|
|
this._hideAllOverlays();
|
|
Tweener.addTween(this.actor,
|
|
{ x: this.gridX,
|
|
y: this.gridY,
|
|
scale_x: this.scale,
|
|
scale_y: this.scale,
|
|
time: Overview.ANIMATION_TIME,
|
|
transition: 'easeOutQuad',
|
|
onComplete: Lang.bind(this, this._fadeInAllOverlays)
|
|
});
|
|
},
|
|
|
|
// Animates the addition of a new (empty) workspace
|
|
slideIn : function(oldScale) {
|
|
if (this.gridCol > this.gridRow) {
|
|
this.actor.set_position(global.screen_width, this.gridY);
|
|
this.actor.set_scale(oldScale, oldScale);
|
|
} else {
|
|
this.actor.set_position(this.gridX, global.screen_height);
|
|
this.actor.set_scale(this.scale, this.scale);
|
|
}
|
|
Tweener.addTween(this.actor,
|
|
{ x: this.gridX,
|
|
y: this.gridY,
|
|
scale_x: this.scale,
|
|
scale_y: this.scale,
|
|
time: Overview.ANIMATION_TIME,
|
|
transition: 'easeOutQuad'
|
|
});
|
|
|
|
this._visible = true;
|
|
},
|
|
|
|
// Animates the removal of a workspace
|
|
slideOut : function(onComplete) {
|
|
let destX = this.actor.x, destY = this.actor.y;
|
|
|
|
this._hideAllOverlays();
|
|
|
|
if (this.gridCol > this.gridRow)
|
|
destX = global.screen_width;
|
|
else
|
|
destY = global.screen_height;
|
|
Tweener.addTween(this.actor,
|
|
{ x: destX,
|
|
y: destY,
|
|
scale_x: this.scale,
|
|
scale_y: this.scale,
|
|
time: Overview.ANIMATION_TIME,
|
|
transition: 'easeOutQuad',
|
|
onComplete: onComplete
|
|
});
|
|
|
|
this._visible = false;
|
|
|
|
// Don't let the user try to select this workspace as it's
|
|
// making its exit.
|
|
this.actor.reactive = false;
|
|
},
|
|
|
|
destroy : function() {
|
|
this.actor.destroy();
|
|
},
|
|
|
|
_onDestroy: function(actor) {
|
|
if (this._overviewHiddenId) {
|
|
Main.overview.disconnect(this._overviewHiddenId);
|
|
this._overviewHiddenId = 0;
|
|
}
|
|
Tweener.removeTweens(actor);
|
|
|
|
this.metaWorkspace.disconnect(this._windowAddedId);
|
|
this.metaWorkspace.disconnect(this._windowRemovedId);
|
|
|
|
if (this._repositionWindowsId > 0)
|
|
Mainloop.source_remove(this._repositionWindowsId);
|
|
|
|
// Usually, the windows will be destroyed automatically with
|
|
// their parent (this.actor), but we might have a zoomed window
|
|
// which has been reparented to the stage - _windows[0] holds
|
|
// the desktop window, which is never reparented
|
|
for (let w = 0; w < this._windows.length; w++)
|
|
this._windows[w].destroy();
|
|
this._windows = [];
|
|
},
|
|
|
|
// Sets this.leavingOverview flag to false.
|
|
_doneLeavingOverview : function() {
|
|
this.leavingOverview = false;
|
|
},
|
|
|
|
// Tests if @win belongs to this workspaces
|
|
_isMyWindow : function (win) {
|
|
return win.get_workspace() == this.metaWorkspace.index() ||
|
|
(win.get_meta_window() && win.get_meta_window().is_on_all_workspaces());
|
|
},
|
|
|
|
// Tests if @win should be shown in the Overview
|
|
_isOverviewWindow : function (win) {
|
|
let tracker = Shell.WindowTracker.get_default();
|
|
return tracker.is_window_interesting(win.get_meta_window());
|
|
},
|
|
|
|
// Create a clone of a (non-desktop) window and add it to the window list
|
|
_addWindowClone : function(win) {
|
|
let clone = new WindowClone(win);
|
|
let overlay = new WindowOverlay(clone, this._windowOverlaysGroup);
|
|
|
|
clone.connect('selected',
|
|
Lang.bind(this, this._onCloneSelected));
|
|
clone.connect('drag-begin',
|
|
Lang.bind(this, function(clone) {
|
|
this.emit('window-drag-begin', clone.actor);
|
|
overlay.hide();
|
|
}));
|
|
clone.connect('drag-end',
|
|
Lang.bind(this, function(clone) {
|
|
this.emit('window-drag-end', clone.actor);
|
|
overlay.show();
|
|
}));
|
|
clone.connect('zoom-start',
|
|
Lang.bind(this, function() {
|
|
this._windowIsZooming = true;
|
|
}));
|
|
clone.connect('zoom-end',
|
|
Lang.bind(this, function() {
|
|
this._windowIsZooming = false;
|
|
}));
|
|
|
|
this.actor.add_actor(clone.actor);
|
|
|
|
overlay.connect('show-close-button', Lang.bind(this, this._onShowOverlayClose));
|
|
|
|
this._windows.push(clone);
|
|
this._windowOverlays.push(overlay);
|
|
|
|
return clone;
|
|
},
|
|
|
|
_onShowOverlayClose: function (windowOverlay) {
|
|
for (let i = 0; i < this._windowOverlays.length; i++) {
|
|
let overlay = this._windowOverlays[i];
|
|
if (overlay == windowOverlay)
|
|
continue;
|
|
overlay.hideCloseButton();
|
|
}
|
|
},
|
|
|
|
_computeWindowSlot : function(windowIndex, numberOfWindows) {
|
|
if (numberOfWindows in POSITIONS)
|
|
return POSITIONS[numberOfWindows][windowIndex];
|
|
|
|
// If we don't have a predefined scheme for this window count,
|
|
// arrange the windows in a grid pattern.
|
|
let gridWidth = Math.ceil(Math.sqrt(numberOfWindows));
|
|
let gridHeight = Math.ceil(numberOfWindows / gridWidth);
|
|
|
|
let fraction = 0.95 * (1. / gridWidth);
|
|
|
|
let xCenter = (.5 / gridWidth) + ((windowIndex) % gridWidth) / gridWidth;
|
|
let yCenter = (.5 / gridHeight) + Math.floor((windowIndex / gridWidth)) / gridHeight;
|
|
|
|
return [xCenter, yCenter, fraction];
|
|
},
|
|
|
|
_computeAllWindowSlots: function(totalWindows) {
|
|
let slots = [];
|
|
for (let i = 0; i < totalWindows; i++) {
|
|
slots.push(this._computeWindowSlot(i, totalWindows));
|
|
}
|
|
return slots;
|
|
},
|
|
|
|
_onCloneSelected : function (clone, time) {
|
|
Main.activateWindow(clone.metaWindow, time,
|
|
this.metaWorkspace.index());
|
|
},
|
|
|
|
_removeSelf : function(actor, event) {
|
|
screen.remove_workspace(this.metaWorkspace, event.get_time());
|
|
return true;
|
|
},
|
|
|
|
// Draggable target interface
|
|
handleDragOver : function(source, actor, x, y, time) {
|
|
if (source instanceof WindowClone)
|
|
return DND.DragMotionResult.MOVE_DROP;
|
|
if (source.shellWorkspaceLaunch)
|
|
return DND.DragMotionResult.COPY_DROP;
|
|
|
|
return DND.DragMotionResult.CONTINUE;
|
|
},
|
|
|
|
acceptDrop : function(source, actor, x, y, time) {
|
|
if (source instanceof WindowClone) {
|
|
let win = source.realWindow;
|
|
if (this._isMyWindow(win))
|
|
return false;
|
|
|
|
// Set a hint on the Mutter.Window so its initial position
|
|
// in the new workspace will be correct
|
|
win._overviewHint = {
|
|
x: actor.x,
|
|
y: actor.y,
|
|
scale: actor.scale_x
|
|
};
|
|
|
|
let metaWindow = win.get_meta_window();
|
|
metaWindow.change_workspace_by_index(this.metaWorkspace.index(),
|
|
false, // don't create workspace
|
|
time);
|
|
return true;
|
|
} else if (source.shellWorkspaceLaunch) {
|
|
this.metaWorkspace.activate(time);
|
|
source.shellWorkspaceLaunch();
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
};
|
|
|
|
Signals.addSignalMethods(Workspace.prototype);
|
|
|
|
// Create a SpecialPropertyModifier to let us move windows in a
|
|
// straight line on the screen even though their containing workspace
|
|
// is also moving.
|
|
Tweener.registerSpecialPropertyModifier('workspace_relative', _workspaceRelativeModifier, _workspaceRelativeGet);
|
|
|
|
function _workspaceRelativeModifier(workspace) {
|
|
let [startX, startY] = Main.overview.getPosition();
|
|
let overviewPosX, overviewPosY, overviewScale;
|
|
|
|
if (!workspace)
|
|
return [];
|
|
|
|
if (workspace.leavingOverview) {
|
|
let [zoomedInX, zoomedInY] = Main.overview.getZoomedInPosition();
|
|
overviewPosX = { begin: startX, end: zoomedInX };
|
|
overviewPosY = { begin: startY, end: zoomedInY };
|
|
overviewScale = { begin: Main.overview.getScale(),
|
|
end: Main.overview.getZoomedInScale() };
|
|
} else {
|
|
overviewPosX = { begin: startX, end: 0 };
|
|
overviewPosY = { begin: startY, end: 0 };
|
|
overviewScale = { begin: Main.overview.getScale(), end: 1 };
|
|
}
|
|
|
|
return [ { name: 'x',
|
|
parameters: { workspacePos: workspace.gridX,
|
|
overviewPos: overviewPosX,
|
|
overviewScale: overviewScale } },
|
|
{ name: 'y',
|
|
parameters: { workspacePos: workspace.gridY,
|
|
overviewPos: overviewPosY,
|
|
overviewScale: overviewScale } }
|
|
];
|
|
}
|
|
|
|
function _workspaceRelativeGet(begin, end, time, params) {
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let curOverviewPos = (1 - time) * params.overviewPos.begin +
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time * params.overviewPos.end;
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let curOverviewScale = (1 - time) * params.overviewScale.begin +
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time * params.overviewScale.end;
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// Calculate the screen position of the window.
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let screen = (1 - time) *
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((begin + params.workspacePos) * params.overviewScale.begin +
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params.overviewPos.begin) +
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time *
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((end + params.workspacePos) * params.overviewScale.end +
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params.overviewPos.end);
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// Return the workspace coordinates.
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return (screen - curOverviewPos) / curOverviewScale - params.workspacePos;
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}
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