360 lines
14 KiB
JavaScript
360 lines
14 KiB
JavaScript
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/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
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const Big = imports.gi.Big;
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const Clutter = imports.gi.Clutter;
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const Shell = imports.gi.Shell;
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const Lang = imports.lang;
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const Mainloop = imports.mainloop;
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const Main = imports.ui.main;
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const Tweener = imports.ui.tweener;
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const Widget = imports.ui.widget;
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const WIDGETBOX_BG_COLOR = new Clutter.Color();
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WIDGETBOX_BG_COLOR.from_pixel(0xf0f0f0ff);
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const BLACK = new Clutter.Color();
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BLACK.from_pixel(0x000000ff);
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const WIDGETBOX_PADDING = 4;
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const ANIMATION_TIME = 0.5;
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const POP_IN_LAG = 250; /* milliseconds */
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function WidgetBox(widget) {
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this._init(widget);
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}
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WidgetBox.prototype = {
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_init: function(widget) {
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if (widget instanceof Widget.Widget)
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this._widget = widget;
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else {
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let ctor = this._ctorFromName(widget);
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this._widget = new ctor();
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}
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if (!this._widget.actor)
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throw new Error("widget has no actor");
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else if (!this._widget.title && !this._widget.collapsedActor)
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throw new Error("widget has neither title nor collapsedActor");
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this.state = this._widget.state = Widget.STATE_EXPANDED;
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// The structure of a WidgetBox:
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//
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// The top level is a Clutter.Group, which exists to make
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// pop-out work correctly; when another widget pops out, its
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// width will increase, which will in turn cause the sidebar's
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// width to increase, which will cause the sidebar to increase
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// the width of each of its children (the WidgetBoxes). But we
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// don't want the non-popped-out widgets to expand, so we make
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// the top-level actor be a Clutter.Group, which will accept
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// the new width from the Sidebar, but not impose it on its
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// own child.
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//
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// Inside the toplevel group is a horizontal Big.Box
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// containing 2 Clutter.Groups; one for the collapsed state
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// (cgroup) and one for the expanded state (egroup). Each
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// group contains a single vertical Big.Box (cbox and ebox
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// respectively), which have the appropriate fixed width. The
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// cbox contains either the collapsed widget actor or else the
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// rotated title. The ebox contains the horizontal title (if
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// any), separator line, and the expanded widget actor. (If
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// the widget doesn't have a collapsed actor, and therefore
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// supports pop-out, then it will also have a vertical line
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// between the two groups, which will only be shown during
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// pop-out.)
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//
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// In the expanded view, cgroup is hidden and egroup is shown.
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// When animating to the collapsed view, first the ebox is
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// slid offscreen by giving it increasingly negative x
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// coordinates within egroup. Then once it's fully offscreen,
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// we hide egroup, show cgroup, and slide cbox back in in the
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// same way.
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//
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// The pop-out view works similarly to the second half of the
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// collapsed-to-expanded transition, except that the
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// horizontal title gets hidden to avoid duplication.
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this.actor = new Clutter.Group();
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this._hbox = new Big.Box({ background_color: WIDGETBOX_BG_COLOR,
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padding: WIDGETBOX_PADDING,
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spacing: WIDGETBOX_PADDING,
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corner_radius: WIDGETBOX_PADDING / 2,
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orientation: Big.BoxOrientation.HORIZONTAL,
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reactive: true });
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this.actor.add_actor(this._hbox);
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this._cgroup = new Clutter.Group({ clip_to_allocation: true });
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this._hbox.append(this._cgroup, Big.BoxPackFlags.NONE);
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this._cbox = new Big.Box({ width: Widget.COLLAPSED_WIDTH,
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clip_to_allocation: true });
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this._cgroup.add_actor(this._cbox);
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if (this._widget.collapsedActor) {
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if (this._widget.collapsedActor == this._widget.actor)
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this._singleActor = true;
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else {
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this._cbox.append(this._widget.collapsedActor,
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Big.BoxPackFlags.NONE);
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}
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} else {
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let vtitle = new Clutter.Text({ font_name: "Sans 16px",
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text: this._widget.title,
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rotation_angle_z: -90.0 });
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let signalId = vtitle.connect('notify::allocation',
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function () {
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vtitle.disconnect(signalId);
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vtitle.set_anchor_point(vtitle.natural_width, 0);
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vtitle.set_size(vtitle.natural_height,
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vtitle.natural_width);
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});
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this._vtitle = vtitle;
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this._cbox.append(this._vtitle, Big.BoxPackFlags.NONE);
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this._vline = new Clutter.Rectangle({ color: BLACK, width: 1 });
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this._hbox.append(this._vline, Big.BoxPackFlags.NONE);
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this._vline.hide();
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// Set up pop-out
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this._eventHandler = this._hbox.connect('captured-event',
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Lang.bind(this, this._popEventHandler));
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this._activationHandler = this._widget.connect('activated',
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Lang.bind(this, this._activationHandler));
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}
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this._cgroup.hide();
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this._egroup = new Clutter.Group({ clip_to_allocation: true });
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this._hbox.append(this._egroup, Big.BoxPackFlags.NONE);
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this._ebox = new Big.Box({ spacing: WIDGETBOX_PADDING,
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width: Widget.EXPANDED_WIDTH,
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clip_to_allocation: true });
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this._egroup.add_actor(this._ebox);
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if (this._widget.title) {
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this._htitle = new Clutter.Text({ font_name: "Sans 16px",
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text: this._widget.title });
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this._ebox.append(this._htitle, Big.BoxPackFlags.NONE);
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this._hline = new Clutter.Rectangle({ color: BLACK, height: 1 });
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this._ebox.append(this._hline, Big.BoxPackFlags.NONE);
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}
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this._ebox.append(this._widget.actor, Big.BoxPackFlags.NONE);
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},
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// Given a name like "imports.ui.widget.ClockWidget", turn that
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// into a constructor function
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_ctorFromName: function(name) {
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// Make sure it's a valid import
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if (!name.match(/^imports(\.[a-zA-Z0-9_]+)+$/))
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throw new Error("widget name must start with 'imports.'");
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if (name.match(/^imports\.gi\./))
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throw new Error("cannot import widget from GIR");
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let ctor = eval(name);
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// Make sure it's really a constructor
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if (!ctor || typeof(ctor) != "function")
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throw new Error("widget name is not a constructor");
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// Make sure it's a widget
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let proto = ctor.prototype;
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while (proto && proto != Widget.Widget.prototype)
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proto = proto.__proto__;
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if (!proto)
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throw new Error("widget does not inherit from Widget prototype");
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return ctor;
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},
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expand: function() {
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Tweener.addTween(this._cbox, { x: -Widget.COLLAPSED_WIDTH,
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time: ANIMATION_TIME / 2,
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transition: "easeOutQuad",
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onComplete: this._expandPart1Complete,
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onCompleteScope: this });
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this.state = this._widget.state = Widget.STATE_EXPANDING;
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},
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_expandPart1Complete: function() {
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this._cgroup.hide();
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this._cbox.x = 0;
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if (this._singleActor) {
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log(this._widget.actor);
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this._widget.actor.unparent();
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this._ebox.append(this._widget.actor, Big.BoxPackFlags.NONE);
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}
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if (this._widget.expand) {
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try {
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this._widget.expand();
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} catch (e) {
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logError(e, 'Widget failed to expand');
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}
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}
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this._egroup.show();
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if (this._htitle) {
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this._htitle.show();
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this._hline.show();
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}
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this._ebox.x = -Widget.EXPANDED_WIDTH;
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Tweener.addTween(this._ebox, { x: 0,
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time: ANIMATION_TIME / 2,
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transition: "easeOutQuad",
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onComplete: this._expandComplete,
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onCompleteScope: this });
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},
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_expandComplete: function() {
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this.state = this._widget.state = Widget.STATE_EXPANDED;
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},
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collapse: function() {
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Tweener.addTween(this._ebox, { x: -Widget.EXPANDED_WIDTH,
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time: ANIMATION_TIME / 2,
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transition: "easeOutQuad",
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onComplete: this._collapsePart1Complete,
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onCompleteScope: this });
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this.state = this._widget.state = Widget.STATE_COLLAPSING;
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},
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_collapsePart1Complete: function() {
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this._egroup.hide();
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this._ebox.x = 0;
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if (this._htitle) {
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this._htitle.hide();
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this._hline.hide();
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}
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if (this._singleActor) {
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log(this._widget.actor);
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this._widget.actor.unparent();
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this._cbox.append(this._widget.actor, Big.BoxPackFlags.NONE);
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}
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if (this._widget.collapse) {
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try {
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this._widget.collapse();
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} catch (e) {
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logError(e, 'Widget failed to collapse');
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}
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}
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this._cgroup.show();
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this._cbox.x = -Widget.COLLAPSED_WIDTH;
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if (this._vtitle)
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this._cbox.height = this._ebox.height;
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Tweener.addTween(this._cbox, { x: 0,
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time: ANIMATION_TIME / 2,
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transition: "easeOutQuad",
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onComplete: this._collapseComplete,
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onCompleteScope: this });
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},
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_collapseComplete: function() {
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this.state = this._widget.state = Widget.STATE_COLLAPSED;
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},
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_popEventHandler: function(actor, event) {
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let type = event.type();
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if (type == Clutter.EventType.ENTER) {
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this._clearPopInTimeout();
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if (this.state == Widget.STATE_COLLAPSED ||
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this.state == Widget.STATE_COLLAPSING) {
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this._popOut();
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return false;
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}
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} else if (type == Clutter.EventType.LEAVE &&
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(this.state == Widget.STATE_POPPED_OUT ||
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this.state == Widget.STATE_POPPING_OUT)) {
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// If moving into another actor within this._hbox, let the
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// event be propagated
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let into = Shell.get_event_related(event);
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while (into) {
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if (into == this._hbox)
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return false;
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into = into.get_parent();
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}
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// Else, moving out of this._hbox
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this._setPopInTimeout();
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return false;
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}
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return false;
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},
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_activationHandler: function() {
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if (this.state == Widget.STATE_POPPED_OUT)
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this._popIn();
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},
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_popOut: function() {
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if (this.state != Widget.STATE_COLLAPSED &&
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this.state != Widget.STATE_COLLAPSING)
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return;
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this._vline.show();
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this._egroup.show();
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this._ebox.x = -Widget.EXPANDED_WIDTH;
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Tweener.addTween(this._ebox, { x: 0,
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time: ANIMATION_TIME / 2,
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transition: "easeOutQuad",
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onComplete: this._popOutComplete,
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onCompleteScope: this });
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this.state = this._widget.state = Widget.STATE_POPPING_OUT;
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Main.chrome.addInputRegionActor(this._hbox);
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},
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_popOutComplete: function() {
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this.state = this._widget.state = Widget.STATE_POPPED_OUT;
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},
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_setPopInTimeout: function() {
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this._clearPopInTimeout();
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this._popInTimeout = Mainloop.timeout_add(POP_IN_LAG, Lang.bind(this, function () { this._popIn(); return false; }));
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},
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_clearPopInTimeout: function() {
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if (this._popInTimeout) {
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Mainloop.source_remove(this._popInTimeout);
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delete this._popInTimeout;
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}
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},
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_popIn: function() {
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this._clearPopInTimeout();
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if (this.state != Widget.STATE_POPPED_OUT &&
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this.state != Widget.STATE_POPPING_OUT)
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return;
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Tweener.addTween(this._ebox, { x: -Widget.EXPANDED_WIDTH,
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time: ANIMATION_TIME / 2,
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transition: "easeOutQuad",
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onComplete: this._popInComplete,
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onCompleteScope: this });
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},
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_popInComplete: function() {
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this.state = this._widget.state = Widget.STATE_COLLAPSED;
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this._vline.hide();
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this._egroup.hide();
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this._ebox.x = 0;
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Main.chrome.removeInputRegionActor(this._hbox);
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},
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destroy: function() {
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if (this._widget.destroy)
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this._widget.destroy();
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}
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};
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