573 lines
23 KiB
JavaScript
573 lines
23 KiB
JavaScript
/* -*- mode: js2; js2-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil -*- */
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const Tweener = imports.tweener.tweener;
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const Clutter = imports.gi.Clutter;
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const Pango = imports.gi.Pango;
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const Main = imports.ui.main;
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const Overlay = imports.ui.overlay;
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const Panel = imports.ui.panel;
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const Meta = imports.gi.Meta;
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const Shell = imports.gi.Shell;
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const Big = imports.gi.Big;
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// Windows are slightly translucent in the overlay mode
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const WINDOW_OPACITY = 0.9 * 255;
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const WINDOWCLONE_BG_COLOR = new Clutter.Color();
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WINDOWCLONE_BG_COLOR.from_pixel(0x000000f0);
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const WINDOWCLONE_TITLE_COLOR = new Clutter.Color();
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WINDOWCLONE_TITLE_COLOR.from_pixel(0xffffffff);
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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, 0.8]],
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2: [[0.25, 0.5, 0.4], [0.75, 0.5, 0.4]],
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3: [[0.25, 0.25, 0.33], [0.75, 0.25, 0.33], [0.5, 0.75, 0.33]],
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4: [[0.25, 0.25, 0.33], [0.75, 0.25, 0.33], [0.75, 0.75, 0.33], [0.25, 0.75, 0.33]],
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5: [[0.165, 0.25, 0.28], [0.495, 0.25, 0.28], [0.825, 0.25, 0.28], [0.25, 0.75, 0.4], [0.75, 0.75, 0.4]]
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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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function Workspace(workspaceNum) {
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this._init(workspaceNum);
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}
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Workspace.prototype = {
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_init : function(workspaceNum) {
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let me = this;
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let global = Shell.Global.get();
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this._workspaceNum = workspaceNum;
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this.actor = new Clutter.Group();
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let windows = global.get_windows().filter(this._isMyWindow, this);
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// Find the desktop window
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for (let i = 0; i < windows.length; i++) {
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if (windows[i].get_window_type() == Meta.WindowType.DESKTOP) {
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this._desktop = this._makeClone(windows[i]);
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break;
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}
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}
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// If there wasn't one, fake it
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if (!this._desktop)
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this._desktop = this._makeDesktopRectangle();
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let metaWorkspace = global.screen.get_workspace_by_index(workspaceNum);
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this._desktop.connect('button-press-event',
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function(actor, event) {
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metaWorkspace.activate(event.get_time());
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Main.hide_overlay();
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});
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this.actor.add_actor(this._desktop);
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// Create clones for remaining windows that should be
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// visible in the overlay
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this._windows = [this._desktop];
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for (let i = 0; i < windows.length; i++) {
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if (this._isOverlayWindow(windows[i])) {
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let clone = this._makeClone(windows[i]);
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clone.connect("button-press-event",
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function(clone, event) {
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clone.raise_top();
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me._activateWindow(clone.realWindow, event.get_time());
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});
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this.actor.add_actor(clone);
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this._windows.push(clone);
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}
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}
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},
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// Animate the full-screen to overlay transition.
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zoomToOverlay : function() {
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let global = Shell.Global.get();
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// Move the desktop into size/position
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this._desktop.set_position(this.fullSizeX, this.fullSizeY);
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Tweener.addTween(this._desktop,
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{ x: this.gridX,
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y: this.gridY,
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scale_x: this.scale,
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scale_y: this.scale,
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time: Overlay.ANIMATION_TIME,
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transition: "easeOutQuad"
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});
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// Likewise for each of the windows in the workspace. This
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// would be easier if we just positioned and scaled the entire
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// workspace group rather than going each window individually,
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// but if we do that then the windows of the active workspace
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// will trace out a curved path as they move into place, which
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// looks odd. Positioning everything independently lets us
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// move them in a straight line to their final destination.
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for (let i = 1; i < this._windows.length; i++) {
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let window = this._windows[i];
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let [xCenter, yCenter, fraction] = this._computeWindowPosition(i);
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xCenter = this.gridX + this.scale * (xCenter * global.screen_width);
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yCenter = this.gridY + this.scale * (yCenter * global.screen_height);
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let size = Math.max(window.width, window.height);
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let desiredSize = global.screen_width * fraction;
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let scale = Math.min(desiredSize / size, 1.0) * this.scale;
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window.set_position(this.fullSizeX + window.origX, this.fullSizeY + window.origY);
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Tweener.addTween(window,
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{ x: xCenter - 0.5 * scale * window.width,
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y: yCenter - 0.5 * scale * window.height,
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scale_x: scale,
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scale_y: scale,
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time: Overlay.ANIMATION_TIME,
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opacity: WINDOW_OPACITY,
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transition: "easeOutQuad",
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onComplete: function () {
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this._addCloneTitle(window);
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},
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onCompleteScope: this
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});
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}
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},
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// Animates the return from overlay mode
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zoomFromOverlay : function() {
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for (let i = 0; i < this._windows.length; i++) {
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let window = this._windows[i];
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if (window.cloneTitle)
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window.cloneTitle.destroy();
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Tweener.addTween(window,
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{ x: this.fullSizeX + window.origX,
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y: this.fullSizeY + window.origY,
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scale_x: 1.0,
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scale_y: 1.0,
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time: Overlay.ANIMATION_TIME,
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opacity: 255,
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transition: "easeOutQuad"
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});
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}
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},
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// Animates grid shrinking/expanding when a row or column
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// of workspaces is added or removed
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resizeToGrid : function (oldScale) {
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let rescale = this.scale / oldScale;
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for (let i = 0; i < this._windows.length; i++) {
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let newX = this.gridX + (this._windows[i].x - this._desktop.x) * rescale;
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let newY = this.gridY + (this._windows[i].y - this._desktop.y) * rescale;
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let newWindowScale = this._windows[i].scale_x * rescale;
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Tweener.addTween(this._windows[i],
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{ x: newX,
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y: newY,
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scale_x: newWindowScale,
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scale_y: newWindowScale,
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time: Overlay.ANIMATION_TIME,
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transition: "easeOutQuad"
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});
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this._adjustCloneTitle(this._windows[i], newX, newY,
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newWindowScale);
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}
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},
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// Animates the addition of a new (empty) workspace
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slideIn : function(oldScale) {
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let global = Shell.Global.get();
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if (this.gridCol > this.gridRow) {
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this._desktop.set_position(global.screen_width, this.gridY);
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this._desktop.set_scale(oldScale, oldScale);
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} else {
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this._desktop.set_position(this.gridX, global.screen_height);
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this._desktop.set_scale(this.scale, this.scale);
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}
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Tweener.addTween(this._desktop,
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{ x: this.gridX,
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y: this.gridY,
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scale_x: this.scale,
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scale_y: this.scale,
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time: Overlay.ANIMATION_TIME,
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transition: "easeOutQuad"
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});
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},
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// Animates the removal of a workspace
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slideOut : function(onComplete) {
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let global = Shell.Global.get();
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let destX = this._desktop.x, destY = this._desktop.y;
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if (this.gridCol > this.gridRow)
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destX = global.screen_width;
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else
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destY = global.screen_height;
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Tweener.addTween(this._desktop,
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{ x: destX,
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y: destY,
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scale_x: this.scale,
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scale_y: this.scale,
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time: Overlay.ANIMATION_TIME,
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transition: "easeOutQuad",
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onComplete: onComplete
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});
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},
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destroy : function() {
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this.actor.destroy();
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this.actor = null;
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},
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// Tests if @win belongs to this workspaces
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_isMyWindow : function (win) {
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return win.get_workspace() == this._workspaceNum ||
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(win.get_meta_window() && win.get_meta_window().is_on_all_workspaces());
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},
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// Tests if @win should be shown in the overlay
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_isOverlayWindow : function (win) {
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return win.get_window_type() != Meta.WindowType.DESKTOP &&
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!win.is_override_redirect();
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},
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// Create a clone of a window to use in the overlay.
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_makeClone : function(window) {
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let clone = new Clutter.CloneTexture({ parent_texture: window.get_texture(),
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reactive: true,
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x: window.x,
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y: window.y });
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clone.realWindow = window;
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clone.origX = window.x;
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clone.origY = window.y;
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return clone;
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},
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// Create a texture for the desktop background, used in the case
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// where there is no desktop window
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_makeDesktopRectangle : function() {
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let global = Shell.Global.get();
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// In the case when we have a desktop window from the file
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// manager, its height is full-screen, i.e. it includes the
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// height of the panel, so we should not subtract the height
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// of the panel from global.screen_height here either to have
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// them show up identically.
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let desktop = new Clutter.Rectangle({ color: global.stage.color,
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reactive: true,
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x: 0,
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y: 0,
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width: global.screen_width,
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height: global.screen_height });
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desktop.origX = desktop.origY = 0;
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return desktop;
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},
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_computeWindowPosition : function(index) {
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// ignore this._windows[0], which is the desktop
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let windowIndex = index - 1;
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let numberOfWindows = this._windows.length - 1;
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if (numberOfWindows in POSITIONS)
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return POSITIONS[numberOfWindows][windowIndex];
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// If we don't have a predefined scheme for this window count,
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// overlap the windows along the diagonal of the workspace
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// (improve this!)
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let fraction = Math.sqrt(1/numberOfWindows);
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// The top window goes at the lower right - this is different from the
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// fixed position schemes where the windows are in "reading order"
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// and the top window goes at the upper left.
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let pos = (numberOfWindows - windowIndex - 1) / (numberOfWindows - 1);
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let xCenter = (fraction / 2) + (1 - fraction) * pos;
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let yCenter = xCenter;
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return [xCenter, yCenter, fraction];
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},
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_addCloneTitle : function (clone) {
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let transformed = clone.get_transformed_size();
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let window = clone.realWindow;
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let icon = window.meta_window.mini_icon;
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let iconTexture = new Clutter.Texture({ width: 16, height: 16, keep_aspect_ratio: true});
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Shell.clutter_texture_set_from_pixbuf(iconTexture, icon);
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let box = new Big.Box({background_color : WINDOWCLONE_BG_COLOR,
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y_align: Big.BoxAlignment.CENTER,
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corner_radius: 5,
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padding: 4,
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spacing: 4,
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orientation: Big.BoxOrientation.HORIZONTAL});
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box.append(iconTexture, Big.BoxPackFlags.NONE);
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let title = new Clutter.Label({color: WINDOWCLONE_TITLE_COLOR,
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font_name: "Sans 14",
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text: window.meta_window.title,
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ellipsize: Pango.EllipsizeMode.END});
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// Get current width (just the icon), with spacing, plus title
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box.fullWidth = box.width + box.spacing + title.width;
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box.width = Math.min(box.fullWidth, transformed[0]);
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box.append(title, Big.BoxPackFlags.EXPAND);
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box.set_position(clone.x, clone.y);
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let parent = clone.get_parent();
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clone.cloneTitle = box;
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parent.add_actor(box);
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},
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_adjustCloneTitle : function (clone, newX, newY, newScale) {
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let title = clone.cloneTitle;
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if (!title)
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return;
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let newWidth = Math.min(title.fullWidth, clone.width * newScale);
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Tweener.addTween(title,
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{ x: newX,
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y: newY,
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width: newWidth,
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time: Overlay.ANIMATION_TIME,
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transition: "easeOutQuad"
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});
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},
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_activateWindow : function(w, time) {
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let global = Shell.Global.get();
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let activeWorkspace = global.screen.get_active_workspace_index();
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let windowWorkspace = w.get_workspace();
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if (windowWorkspace != activeWorkspace) {
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let workspace = global.screen.get_workspace_by_index(windowWorkspace);
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workspace.activate_with_focus(w.get_meta_window(), time);
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} else
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w.get_meta_window().activate(time);
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Main.hide_overlay();
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}
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};
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function Workspaces() {
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this._init();
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}
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Workspaces.prototype = {
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_init : function() {
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let me = this;
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let global = Shell.Global.get();
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this.actor = new Clutter.Group();
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let screenWidth = global.screen_width;
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let screenHeight = global.screen_height;
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this._width = screenWidth * Overlay.WORKSPACE_GRID_SCALE;
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this._height = screenHeight * Overlay.WORKSPACE_GRID_SCALE;
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this._x = screenWidth - this._width - Overlay.WORKSPACE_GRID_PADDING;
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this._y = Panel.PANEL_HEIGHT + (screenHeight - this._height - Panel.PANEL_HEIGHT) / 2;
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this._workspaces = [];
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let activeWorkspaceIndex = global.screen.get_active_workspace_index();
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let activeWorkspace;
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// Create and position workspace objects
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for (let w = 0; w < global.screen.n_workspaces; w++) {
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this._workspaces[w] = new Workspace(w);
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if (w == activeWorkspaceIndex)
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activeWorkspace = this._workspaces[w];
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this.actor.add_actor(this._workspaces[w].actor);
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}
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activeWorkspace.actor.raise_top();
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this._positionWorkspaces(global, activeWorkspace);
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// Create a backdrop rectangle, so that you don't see the
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// other parts of the overlay (eg, sidebar) through the gaps
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// between the workspaces when they're zooming in/out
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this._backdrop = new Clutter.Rectangle({ color: Overlay.OVERLAY_BACKGROUND_COLOR,
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x: this._backdropX,
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y: this._backdropY,
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width: this._backdropWidth,
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height: this._backdropHeight
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});
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this.actor.add_actor(this._backdrop);
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this._backdrop.lower_bottom();
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Tweener.addTween(this._backdrop,
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{ x: this._x,
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y: this._y,
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width: this._width,
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height: this._height,
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time: Overlay.ANIMATION_TIME,
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transition: "easeOutQuad"
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});
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// Position/scale the desktop windows and their children
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for (let w = 0; w < this._workspaces.length; w++)
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this._workspaces[w].zoomToOverlay();
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// Track changes to the number of workspaces
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this._nWorkspacesNotifyId =
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global.screen.connect('notify::n-workspaces',
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function() {
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me._workspacesChanged();
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});
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},
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hide : function() {
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let global = Shell.Global.get();
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let activeWorkspaceIndex = global.screen.get_active_workspace_index();
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let activeWorkspace = this._workspaces[activeWorkspaceIndex];
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this._positionWorkspaces(global, activeWorkspace);
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activeWorkspace.actor.raise_top();
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for (let w = 0; w < this._workspaces.length; w++)
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this._workspaces[w].zoomFromOverlay();
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Tweener.addTween(this._backdrop,
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{ x: this._backdropX,
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y: this._backdropY,
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width: this._backdropWidth,
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height: this._backdropHeight,
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time: Overlay.ANIMATION_TIME,
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transition: "easeOutQuad"
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});
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},
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destroy : function() {
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let global = Shell.Global.get();
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for (let w = 0; w < this._workspaces.length; w++)
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this._workspaces[w].destroy();
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this._workspaces = [];
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this._backdrop.destroy();
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this._backdrop = null;
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global.screen.disconnect(this._nWorkspacesNotifyId);
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},
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// Assign grid positions to workspaces. We can't just do a simple
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// row-major or column-major numbering, because we don't want the
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// existing workspaces to get rearranged when we add a row or
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// column. So we alternate between adding to rows and adding to
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// columns. (So, eg, when going from a 2x2 grid of 4 workspaces to
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// a 3x2 grid of 5 workspaces, the 4 existing workspaces stay
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// where they are, and the 5th one is added to the end of the
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// first row.)
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//
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// FIXME: need to make the metacity internal layout agree with this!
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_positionWorkspaces : function(global, activeWorkspace) {
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if (!activeWorkspace) {
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let activeWorkspaceIndex = global.screen.get_active_workspace_index();
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activeWorkspace = this._workspaces[activeWorkspaceIndex];
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}
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let gridWidth = Math.ceil(Math.sqrt(this._workspaces.length));
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let gridHeight = Math.ceil(this._workspaces.length / gridWidth);
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let wsWidth = (this._width - (gridWidth - 1) * GRID_SPACING) / gridWidth;
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let wsHeight = (this._height - (gridHeight - 1) * GRID_SPACING) / gridHeight;
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let scale = wsWidth / global.screen_width;
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let span = 1, n = 0, row = 0, col = 0, horiz = true;
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for (let w = 0; w < this._workspaces.length; w++) {
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let workspace = this._workspaces[w];
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workspace.gridRow = row;
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workspace.gridCol = col;
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workspace.gridX = this._x + workspace.gridCol * (wsWidth + GRID_SPACING);
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workspace.gridY = this._y + workspace.gridRow * (wsHeight + GRID_SPACING);
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workspace.scale = scale;
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|
|
if (horiz) {
|
|
col++;
|
|
if (col == span) {
|
|
row = 0;
|
|
horiz = false;
|
|
}
|
|
} else {
|
|
row++;
|
|
if (row == span) {
|
|
col = 0;
|
|
horiz = true;
|
|
span++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Now figure out their full-size coordinates
|
|
for (let w = 0; w < this._workspaces.length; w++) {
|
|
let workspace = this._workspaces[w];
|
|
|
|
workspace.fullSizeX = (workspace.gridCol - activeWorkspace.gridCol) * (global.screen_width + GRID_SPACING);
|
|
workspace.fullSizeY = (workspace.gridRow - activeWorkspace.gridRow) * (global.screen_height + GRID_SPACING);
|
|
}
|
|
|
|
// And the backdrop
|
|
this._backdropX = this._workspaces[0].fullSizeX;
|
|
this._backdropY = this._workspaces[0].fullSizeY;
|
|
this._backdropWidth = gridWidth * (global.screen_width + GRID_SPACING) - GRID_SPACING;
|
|
this._backdropHeight = gridHeight * (global.screen_height + GRID_SPACING) - GRID_SPACING;
|
|
},
|
|
|
|
_workspacesChanged : function() {
|
|
let global = Shell.Global.get();
|
|
|
|
let oldNumWorkspaces = this._workspaces.length;
|
|
let newNumWorkspaces = global.screen.n_workspaces;
|
|
|
|
if (oldNumWorkspaces == newNumWorkspaces)
|
|
return;
|
|
|
|
let oldScale = this._workspaces[0].scale;
|
|
let oldGridWidth = Math.ceil(Math.sqrt(oldNumWorkspaces));
|
|
let oldGridHeight = Math.ceil(oldNumWorkspaces / oldGridWidth);
|
|
let lostWorkspaces = [];
|
|
|
|
if (newNumWorkspaces > oldNumWorkspaces) {
|
|
// Create new workspace groups
|
|
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++) {
|
|
this._workspaces[w] = new Workspace(w);
|
|
this.actor.add_actor(this._workspaces[w].actor);
|
|
}
|
|
} else {
|
|
// Truncate the list of workspaces
|
|
// FIXME: assumes that the workspaces are being removed from
|
|
// the end of the list, not the start/middle
|
|
lostWorkspaces = this._workspaces.splice(newNumWorkspaces);
|
|
}
|
|
|
|
// Figure out the new layout
|
|
this._positionWorkspaces(global);
|
|
let newScale = this._workspaces[0].scale;
|
|
let newGridWidth = Math.ceil(Math.sqrt(newNumWorkspaces));
|
|
let newGridHeight = Math.ceil(newNumWorkspaces / newGridWidth);
|
|
|
|
if (newGridWidth != oldGridWidth || newGridHeight != oldGridHeight) {
|
|
// We need to resize/move the existing workspaces/windows
|
|
let existingWorkspaces = Math.min(oldNumWorkspaces, newNumWorkspaces);
|
|
for (let w = 0; w < existingWorkspaces; w++)
|
|
this._workspaces[w].resizeToGrid(oldScale);
|
|
}
|
|
|
|
if (newNumWorkspaces > oldNumWorkspaces) {
|
|
// Slide new workspaces in from offscreen
|
|
for (let w = oldNumWorkspaces; w < newNumWorkspaces; w++)
|
|
this._workspaces[w].slideIn(oldScale);
|
|
} else {
|
|
// Slide old workspaces out
|
|
for (let w = 0; w < lostWorkspaces.length; w++) {
|
|
let workspace = lostWorkspaces[w];
|
|
workspace.slideOut(function () { workspace.destroy(); });
|
|
}
|
|
|
|
// FIXME: deal with windows on the lost workspaces
|
|
}
|
|
}
|
|
};
|