// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*- const Clutter = imports.gi.Clutter; const St = imports.gi.St; const Lang = imports.lang; const Layout = imports.ui.layout; const Main = imports.ui.main; const Mainloop = imports.mainloop; const Tweener = imports.ui.tweener; const Meta = imports.gi.Meta; const HIDE_TIMEOUT = 1500; const FADE_TIME = 0.1; const LEVEL_ANIMATION_TIME = 0.1; const LevelBar = new Lang.Class({ Name: 'LevelBar', _init: function() { this._level = 0; this.actor = new St.Bin({ style_class: 'level', x_fill: true, y_fill: true }); this._bar = new St.DrawingArea(); this._bar.connect('repaint', Lang.bind(this, this._repaint)); this.actor.set_child(this._bar); }, get level() { return this._level; }, set level(value) { let newValue = Math.max(0, Math.min(value, 100)); if (newValue == this._level) return; this._level = newValue; this._bar.queue_repaint(); }, _repaint: function() { let cr = this._bar.get_context(); let node = this.actor.get_theme_node(); let radius = node.get_border_radius(0); // assume same radius for all corners Clutter.cairo_set_source_color(cr, node.get_foreground_color()); let [w, h] = this._bar.get_surface_size(); w *= (this._level / 100.); if (w == 0) return; cr.moveTo(radius, 0); if (w >= radius) cr.arc(w - radius, radius, radius, 1.5 * Math.PI, 2. * Math.PI); else cr.lineTo(w, 0); if (w >= radius) cr.arc(w - radius, h - radius, radius, 0, 0.5 * Math.PI); else cr.lineTo(w, h); cr.arc(radius, h - radius, radius, 0.5 * Math.PI, Math.PI); cr.arc(radius, radius, radius, Math.PI, 1.5 * Math.PI); cr.fill(); } }); const OsdWindow = new Lang.Class({ Name: 'OsdWindow', _init: function() { this._popupSize = 0; this.actor = new St.Widget({ x_expand: true, y_expand: true, x_align: Clutter.ActorAlign.CENTER, y_align: Clutter.ActorAlign.CENTER }); this.actor.add_constraint(new Layout.MonitorConstraint({ primary: true })); this._box = new St.BoxLayout({ style_class: 'osd-window', vertical: true }); this.actor.add_actor(this._box); this._box.connect('style-changed', Lang.bind(this, this._onStyleChanged)); this._box.connect('notify::height', Lang.bind(this, function() { Meta.later_add(Meta.LaterType.BEFORE_REDRAW, Lang.bind(this, function() { this._box.width = this._box.height; })); })); this._icon = new St.Icon(); this._box.add(this._icon, { expand: true }); this._label = new St.Label(); this._box.add(this._label); this._level = new LevelBar(); this._box.add(this._level.actor); this._hideTimeoutId = 0; this._reset(); Main.layoutManager.connect('monitors-changed', Lang.bind(this, this._monitorsChanged)); this._monitorsChanged(); Main.layoutManager.addChrome(this.actor, { affectsInputRegion: false }); }, setIcon: function(icon) { this._icon.gicon = icon; }, setLabel: function(label) { this._label.visible = (label != undefined); if (label) this._label.text = label; }, setLevel: function(level) { this._level.actor.visible = (level != undefined); if (this.actor.visible) Tweener.addTween(this._level, { level: level, time: LEVEL_ANIMATION_TIME, transition: 'easeOutQuad' }); else this._level.level = level; }, show: function() { if (!this._icon.gicon) return; if (!this.actor.visible) { this.actor.show(); this.actor.opacity = 0; this.actor.get_parent().set_child_above_sibling(this.actor, null); Tweener.addTween(this.actor, { opacity: 255, time: FADE_TIME, transition: 'easeOutQuad' }); } if (this._hideTimeoutId) Mainloop.source_remove(this._hideTimeoutId); this._hideTimeoutId = Mainloop.timeout_add(HIDE_TIMEOUT, Lang.bind(this, this._hide)); }, cancel: function() { if (!this._hideTimeoutId) return; Mainloop.source_remove(this._hideTimeoutId); this._hideTimeoutId = 0; this._hide(); }, _hide: function() { Tweener.addTween(this.actor, { opacity: 0, time: FADE_TIME, transition: 'easeOutQuad', onComplete: Lang.bind(this, this._reset) }); }, _reset: function() { this.actor.hide(); this.setLabel(null); this.setLevel(null); }, _monitorsChanged: function() { /* assume 110x110 on a 640x480 display and scale from there */ let monitor = Main.layoutManager.primaryMonitor; let scalew = monitor.width / 640.0; let scaleh = monitor.height / 480.0; let scale = Math.min(scalew, scaleh); this._popupSize = 110 * Math.max(1, scale); this._box.translation_y = monitor.height / 4; this._icon.icon_size = this._popupSize / 2; this._box.style_changed(); }, _onStyleChanged: function() { let themeNode = this._box.get_theme_node(); let horizontalPadding = themeNode.get_horizontal_padding(); let verticalPadding = themeNode.get_vertical_padding(); let topBorder = themeNode.get_border_width(St.Side.TOP); let bottomBorder = themeNode.get_border_width(St.Side.BOTTOM); let leftBorder = themeNode.get_border_width(St.Side.LEFT); let rightBorder = themeNode.get_border_width(St.Side.RIGHT); let minWidth = this._popupSize - verticalPadding - leftBorder - rightBorder; let minHeight = this._popupSize - horizontalPadding - topBorder - bottomBorder; this._box.style = 'min-height: %dpx;'.format(Math.max(minWidth, minHeight)); } });