586ebcd5be
This fixes a blue background being drawn when switching the monitors configuration using hardware keys (clone/multimonitor/external/internal). The problem is that the shell gather all background loading requests under the same meta_background_load_file_async call using one GCancellable (the first one to come). So when the shell receives a batch of 12 or so XRandr events, it creates 12 new background managers which end up trying to load 12 times the same background picture. All of these requests are batched into the same meta_background_load_file_async using the first GCancellable received on the first request. Unfortunately, when the first request is cancelled by the following event indicating a new monitor setup, all of the background picture requests are dropped on the floor, and nothing gets loaded (hence the blue screen background). https://bugzilla.gnome.org/show_bug.cgi?id=703001
827 lines
31 KiB
JavaScript
827 lines
31 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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const Clutter = imports.gi.Clutter;
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const GDesktopEnums = imports.gi.GDesktopEnums;
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const Gio = imports.gi.Gio;
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const GLib = imports.gi.GLib;
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const GnomeDesktop = imports.gi.GnomeDesktop;
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const Lang = imports.lang;
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const Meta = imports.gi.Meta;
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const Signals = imports.signals;
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const Main = imports.ui.main;
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const Params = imports.misc.params;
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const Tweener = imports.ui.tweener;
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const BACKGROUND_SCHEMA = 'org.gnome.desktop.background';
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const PRIMARY_COLOR_KEY = 'primary-color';
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const SECONDARY_COLOR_KEY = 'secondary-color';
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const COLOR_SHADING_TYPE_KEY = 'color-shading-type';
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const BACKGROUND_STYLE_KEY = 'picture-options';
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const PICTURE_OPACITY_KEY = 'picture-opacity';
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const PICTURE_URI_KEY = 'picture-uri';
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const FADE_ANIMATION_TIME = 1.0;
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// These parameters affect how often we redraw.
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// The first is how different (percent crossfaded) the slide show
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// has to look before redrawing and the second is the minimum
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// frequency (in seconds) we're willing to wake up
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const ANIMATION_OPACITY_STEP_INCREMENT = 4.0;
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const ANIMATION_MIN_WAKEUP_INTERVAL = 1.0;
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let _backgroundCache = null;
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const BackgroundCache = new Lang.Class({
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Name: 'BackgroundCache',
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_init: function() {
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this._patterns = [];
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this._images = [];
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this._pendingFileLoads = [];
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this._fileMonitors = {};
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},
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getPatternContent: function(params) {
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params = Params.parse(params, { monitorIndex: 0,
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color: null,
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secondColor: null,
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shadingType: null,
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effects: Meta.BackgroundEffects.NONE });
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let content = null;
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let candidateContent = null;
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for (let i = 0; i < this._patterns.length; i++) {
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if (!this._patterns[i])
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continue;
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if (this._patterns[i].get_shading() != params.shadingType)
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continue;
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if (!params.color.equal(this._patterns[i].get_color()))
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continue;
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if (params.shadingType != GDesktopEnums.BackgroundShading.SOLID &&
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!params.secondColor.equal(this._patterns[i].get_second_color()))
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continue;
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candidateContent = this._patterns[i];
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if (params.effects != this._patterns[i].effects)
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continue;
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break;
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}
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if (candidateContent) {
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content = candidateContent.copy(params.monitorIndex, params.effects);
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} else {
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content = new Meta.Background({ meta_screen: global.screen,
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monitor: params.monitorIndex,
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effects: params.effects });
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if (params.shadingType == GDesktopEnums.BackgroundShading.SOLID) {
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content.load_color(params.color);
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} else {
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content.load_gradient(params.shadingType, params.color, params.secondColor);
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}
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}
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this._patterns.push(content);
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return content;
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},
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_monitorFile: function(filename) {
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if (this._fileMonitors[filename])
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return;
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let file = Gio.File.new_for_path(filename);
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let monitor = file.monitor(Gio.FileMonitorFlags.NONE, null);
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let signalId = monitor.connect('changed',
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Lang.bind(this, function() {
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for (let i = 0; i < this._images.length; i++) {
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if (this._images[i].get_filename() == filename)
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this._images.splice(i, 1);
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}
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monitor.disconnect(signalId);
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this.emit('file-changed', filename);
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}));
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this._fileMonitors[filename] = monitor;
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},
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_removeContent: function(contentList, content) {
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let index = contentList.indexOf(content);
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if (index >= 0)
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contentList.splice(index, 1);
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},
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removePatternContent: function(content) {
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this._removeContent(this._patterns, content);
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},
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removeImageContent: function(content) {
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let filename = content.get_filename();
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if (filename && this._fileMonitors[filename])
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delete this._fileMonitors[filename];
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this._removeContent(this._images, content);
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},
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_loadImageContent: function(params) {
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params = Params.parse(params, { monitorIndex: 0,
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style: null,
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filename: null,
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effects: Meta.BackgroundEffects.NONE,
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cancellable: null,
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onFinished: null });
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let fileLoad = { filename: params.filename,
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style: params.style,
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shouldCopy: false,
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monitorIndex: params.monitorIndex,
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effects: params.effects,
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onFinished: params.onFinished,
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cancellable: new Gio.Cancellable(), };
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this._pendingFileLoads.push(fileLoad);
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if (params.cancellable) {
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params.cancellable.connect(Lang.bind(this, function(c) {
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fileLoad.cancellable.cancel();
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}));
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}
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let content = new Meta.Background({ meta_screen: global.screen,
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monitor: params.monitorIndex,
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effects: params.effects });
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content.load_file_async(params.filename,
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params.style,
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fileLoad.cancellable,
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Lang.bind(this,
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function(object, result) {
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if (fileLoad.cancellable.is_cancelled()) {
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if (params.cancellable && params.cancellable.is_cancelled()) {
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if (params.onFinished)
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params.onFinished(null);
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this._removePendingFileLoad(fileLoad);
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return;
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}
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return;
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}
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try {
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content.load_file_finish(result);
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this._monitorFile(params.filename);
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this._images.push(content);
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} catch(e) {
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content = null;
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}
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let needsCopy = false;
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for (let i = 0; i < this._pendingFileLoads.length; i++) {
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let pendingLoad = this._pendingFileLoads[i];
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if (pendingLoad.filename != params.filename ||
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pendingLoad.style != params.style)
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continue;
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if (pendingLoad.cancellable.is_cancelled())
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continue;
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pendingLoad.cancellable.cancel();
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if (pendingLoad.onFinished) {
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if (content && needsCopy) {
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content = object.copy(pendingLoad.monitorIndex,
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pendingLoad.effects);
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}
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needsCopy = true;
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pendingLoad.onFinished(content);
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}
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this._pendingFileLoads.splice(i, 1);
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}
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}));
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},
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_removePendingFileLoad: function(fileLoad) {
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for (let i = 0; i < this._pendingFileLoads.length; i++) {
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if (this._pendingFileLoads[i].cancellable == fileLoad.cancellable) {
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this._pendingFileLoads.splice(i, 1);
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break;
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}
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}
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},
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getImageContent: function(params) {
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params = Params.parse(params, { monitorIndex: 0,
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style: null,
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filename: null,
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effects: Meta.BackgroundEffects.NONE,
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cancellable: null,
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onFinished: null });
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let content = null;
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let candidateContent = null;
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for (let i = 0; i < this._images.length; i++) {
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if (!this._images[i])
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continue;
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if (this._images[i].get_style() != params.style)
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continue;
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if (this._images[i].get_filename() != params.filename)
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continue;
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if (params.style == GDesktopEnums.BackgroundStyle.SPANNED &&
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this._images[i].monitor_index != this._monitorIndex)
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continue;
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candidateContent = this._images[i];
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if (params.effects != this._images[i].effects)
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continue;
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break;
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}
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if (candidateContent) {
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content = candidateContent.copy(params.monitorIndex, params.effects);
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if (params.cancellable && params.cancellable.is_cancelled())
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content = null;
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else
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this._images.push(content);
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if (params.onFinished)
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params.onFinished(content);
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} else {
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this._loadImageContent({ filename: params.filename,
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style: params.style,
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effects: params.effects,
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monitorIndex: params.monitorIndex,
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cancellable: params.cancellable,
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onFinished: params.onFinished });
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}
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},
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getAnimation: function(params) {
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params = Params.parse(params, { filename: null,
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onLoaded: null });
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if (this._animationFilename == params.filename) {
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if (params.onLoaded) {
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GLib.idle_add(GLib.PRIORITY_DEFAULT, Lang.bind(this, function() {
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params.onLoaded(this._animation);
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}));
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}
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}
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let animation = new Animation({ filename: params.filename });
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animation.load(Lang.bind(this, function() {
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this._monitorFile(params.filename);
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this._animationFilename = params.filename;
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this._animation = animation;
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if (params.onLoaded) {
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GLib.idle_add(GLib.PRIORITY_DEFAULT, Lang.bind(this, function() {
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params.onLoaded(this._animation);
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}));
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}
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}));
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}
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});
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Signals.addSignalMethods(BackgroundCache.prototype);
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function getBackgroundCache() {
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if (!_backgroundCache)
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_backgroundCache = new BackgroundCache();
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return _backgroundCache;
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}
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const Background = new Lang.Class({
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Name: 'Background',
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_init: function(params) {
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params = Params.parse(params, { monitorIndex: 0,
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layoutManager: Main.layoutManager,
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effects: Meta.BackgroundEffects.NONE });
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this.actor = new Meta.BackgroundGroup();
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this.actor._delegate = this;
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this._destroySignalId = this.actor.connect('destroy',
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Lang.bind(this, this._destroy));
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this._settings = new Gio.Settings({ schema: BACKGROUND_SCHEMA });
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this._monitorIndex = params.monitorIndex;
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this._layoutManager = params.layoutManager;
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this._effects = params.effects;
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this._fileWatches = {};
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this._pattern = null;
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// contains a single image for static backgrounds and
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// two images (from and to) for slide shows
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this._images = {};
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this._brightness = 1.0;
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this._vignetteSharpness = 0.2;
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this._saturation = 1.0;
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this._cancellable = new Gio.Cancellable();
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this.isLoaded = false;
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this._settings.connect('changed', Lang.bind(this, function() {
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this.emit('changed');
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}));
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this._load();
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},
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_destroy: function() {
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this._cancellable.cancel();
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if (this._updateAnimationTimeoutId) {
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GLib.source_remove (this._updateAnimationTimeoutId);
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this._updateAnimationTimeoutId = 0;
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}
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let i;
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let keys = Object.keys(this._fileWatches);
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for (i = 0; i < keys.length; i++) {
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this._cache.disconnect(this._fileWatches[keys[i]]);
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}
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this._fileWatches = null;
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if (this._pattern) {
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if (this._pattern.content)
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this._cache.removePatternContent(this._pattern.content);
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this._pattern.destroy();
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this._pattern = null;
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}
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keys = Object.keys(this._images);
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for (i = 0; i < keys.length; i++) {
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let actor = this._images[keys[i]];
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if (actor.content)
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this._cache.removeImageContent(actor.content);
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actor.destroy();
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this._images[keys[i]] = null;
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}
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this.actor.disconnect(this._destroySignalId);
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this._destroySignalId = 0;
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},
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_setLoaded: function() {
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if (this.isLoaded)
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return;
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this.isLoaded = true;
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GLib.idle_add(GLib.PRIORITY_DEFAULT, Lang.bind(this, function() {
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this.emit('loaded');
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return false;
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}));
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},
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_loadPattern: function() {
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let colorString, res, color, secondColor;
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colorString = this._settings.get_string(PRIMARY_COLOR_KEY);
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[res, color] = Clutter.Color.from_string(colorString);
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colorString = this._settings.get_string(SECONDARY_COLOR_KEY);
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[res, secondColor] = Clutter.Color.from_string(colorString);
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let shadingType = this._settings.get_enum(COLOR_SHADING_TYPE_KEY);
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let content = this._cache.getPatternContent({ monitorIndex: this._monitorIndex,
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effects: this._effects,
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color: color,
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secondColor: secondColor,
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shadingType: shadingType });
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this._pattern = new Meta.BackgroundActor();
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this.actor.add_child(this._pattern);
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this._pattern.content = content;
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},
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_watchCacheFile: function(filename) {
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if (this._fileWatches[filename])
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return;
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let signalId = this._cache.connect('file-changed',
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Lang.bind(this, function(cache, changedFile) {
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if (changedFile == filename) {
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this.emit('changed');
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}
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}));
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this._fileWatches[filename] = signalId;
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},
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_addImage: function(content, index, filename) {
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content.saturation = this._saturation;
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content.brightness = this._brightness;
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content.vignette_sharpness = this._vignetteSharpness;
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let actor = new Meta.BackgroundActor();
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actor.content = content;
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// The background pattern is the first actor in
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// the group, and all images should be above that.
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this.actor.insert_child_at_index(actor, index + 1);
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this._images[index] = actor;
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this._watchCacheFile(filename);
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},
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_updateImage: function(content, index, filename) {
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content.saturation = this._saturation;
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content.brightness = this._brightness;
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content.vignette_sharpness = this._vignetteSharpness;
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this._cache.removeImageContent(this._images[index].content);
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this._images[index].content = content;
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this._watchCacheFile(filename);
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},
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_updateAnimationProgress: function() {
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if (this._images[1])
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this._images[1].opacity = this._animation.transitionProgress * 255;
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this._queueUpdateAnimation();
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},
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_updateAnimation: function() {
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this._updateAnimationTimeoutId = 0;
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this._animation.update(this._layoutManager.monitors[this._monitorIndex]);
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let files = this._animation.keyFrameFiles;
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if (files.length == 0) {
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this._setLoaded();
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this._queueUpdateAnimation();
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return;
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}
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let numPendingImages = files.length;
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for (let i = 0; i < files.length; i++) {
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if (this._images[i] && this._images[i].content &&
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this._images[i].content.get_filename() == files[i]) {
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numPendingImages--;
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if (numPendingImages == 0)
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this._updateAnimationProgress();
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continue;
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}
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this._cache.getImageContent({ monitorIndex: this._monitorIndex,
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effects: this._effects,
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style: this._style,
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filename: files[i],
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cancellable: this._cancellable,
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onFinished: Lang.bind(this, function(content, i) {
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numPendingImages--;
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if (!content) {
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this._setLoaded();
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if (numPendingImages == 0)
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this._updateAnimationProgress();
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return;
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}
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if (!this._images[i]) {
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this._addImage(content, i, files[i]);
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} else {
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this._updateImage(content, i, files[i]);
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}
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if (numPendingImages == 0) {
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this._setLoaded();
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this._updateAnimationProgress();
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}
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}, i)
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});
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}
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},
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_queueUpdateAnimation: function() {
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if (this._updateAnimationTimeoutId != 0)
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return;
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if (!this._cancellable || this._cancellable.is_cancelled())
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return;
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if (!this._animation.transitionDuration)
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return;
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let nSteps = 255 / ANIMATION_OPACITY_STEP_INCREMENT;
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let timePerStep = (this._animation.transitionDuration * 1000) / nSteps;
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let interval = Math.max(ANIMATION_MIN_WAKEUP_INTERVAL * 1000,
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timePerStep);
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if (interval > GLib.MAXUINT32)
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return;
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this._updateAnimationTimeoutId = GLib.timeout_add(GLib.PRIORITY_DEFAULT,
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interval,
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Lang.bind(this, function() {
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this._updateAnimationTimeoutId = 0;
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this._updateAnimation();
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return false;
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}));
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},
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_loadAnimation: function(filename) {
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this._cache.getAnimation({ filename: filename,
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onLoaded: Lang.bind(this, function(animation) {
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this._animation = animation;
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if (!this._animation || this._cancellable.is_cancelled()) {
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this._setLoaded();
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return;
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}
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|
|
this._updateAnimation();
|
|
this._watchCacheFile(filename);
|
|
})
|
|
});
|
|
},
|
|
|
|
_loadFile: function(filename) {
|
|
this._cache.getImageContent({ monitorIndex: this._monitorIndex,
|
|
effects: this._effects,
|
|
style: this._style,
|
|
filename: filename,
|
|
cancellable: this._cancellable,
|
|
onFinished: Lang.bind(this, function(content) {
|
|
if (!content) {
|
|
if (!this._cancellable.is_cancelled())
|
|
this._loadAnimation(filename);
|
|
return;
|
|
}
|
|
|
|
this._addImage(content, 0, filename);
|
|
this._setLoaded();
|
|
})
|
|
});
|
|
|
|
},
|
|
|
|
_load: function () {
|
|
this._cache = getBackgroundCache();
|
|
|
|
this._loadPattern(this._cache);
|
|
|
|
this._style = this._settings.get_enum(BACKGROUND_STYLE_KEY);
|
|
if (this._style == GDesktopEnums.BackgroundStyle.NONE) {
|
|
this._setLoaded();
|
|
return;
|
|
}
|
|
|
|
let uri = this._settings.get_string(PICTURE_URI_KEY);
|
|
let filename;
|
|
if (GLib.uri_parse_scheme(uri) != null)
|
|
filename = Gio.File.new_for_uri(uri).get_path();
|
|
else
|
|
filename = uri;
|
|
|
|
if (!filename) {
|
|
this._setLoaded();
|
|
return;
|
|
}
|
|
|
|
this._loadFile(filename);
|
|
},
|
|
|
|
get saturation() {
|
|
return this._saturation;
|
|
},
|
|
|
|
set saturation(saturation) {
|
|
this._saturation = saturation;
|
|
|
|
if (this._pattern && this._pattern.content)
|
|
this._pattern.content.saturation = saturation;
|
|
|
|
let keys = Object.keys(this._images);
|
|
for (let i = 0; i < keys.length; i++) {
|
|
let image = this._images[keys[i]];
|
|
if (image && image.content)
|
|
image.content.saturation = saturation;
|
|
}
|
|
},
|
|
|
|
get brightness() {
|
|
return this._brightness;
|
|
},
|
|
|
|
set brightness(factor) {
|
|
this._brightness = factor;
|
|
if (this._pattern && this._pattern.content)
|
|
this._pattern.content.brightness = factor;
|
|
|
|
let keys = Object.keys(this._images);
|
|
for (let i = 0; i < keys.length; i++) {
|
|
let image = this._images[keys[i]];
|
|
if (image && image.content)
|
|
image.content.brightness = factor;
|
|
}
|
|
},
|
|
|
|
get vignetteSharpness() {
|
|
return this._vignetteSharpness;
|
|
},
|
|
|
|
set vignetteSharpness(sharpness) {
|
|
this._vignetteSharpness = sharpness;
|
|
if (this._pattern && this._pattern.content)
|
|
this._pattern.content.vignette_sharpness = sharpness;
|
|
|
|
let keys = Object.keys(this._images);
|
|
for (let i = 0; i < keys.length; i++) {
|
|
let image = this._images[keys[i]];
|
|
if (image && image.content)
|
|
image.content.vignette_sharpness = sharpness;
|
|
}
|
|
}
|
|
});
|
|
Signals.addSignalMethods(Background.prototype);
|
|
|
|
const SystemBackground = new Lang.Class({
|
|
Name: 'SystemBackground',
|
|
|
|
_init: function() {
|
|
this._cache = getBackgroundCache();
|
|
this.actor = new Meta.BackgroundActor();
|
|
|
|
this._cache.getImageContent({ style: GDesktopEnums.BackgroundStyle.WALLPAPER,
|
|
filename: global.datadir + '/theme/noise-texture.png',
|
|
effects: Meta.BackgroundEffects.NONE,
|
|
onFinished: Lang.bind(this, function(content) {
|
|
this.actor.content = content;
|
|
this.emit('loaded');
|
|
})
|
|
});
|
|
}
|
|
});
|
|
Signals.addSignalMethods(SystemBackground.prototype);
|
|
|
|
const Animation = new Lang.Class({
|
|
Name: 'Animation',
|
|
|
|
_init: function(params) {
|
|
params = Params.parse(params, { filename: null });
|
|
|
|
this.filename = params.filename;
|
|
this.keyFrameFiles = [];
|
|
this.transitionProgress = 0.0;
|
|
this.transitionDuration = 0.0;
|
|
this.loaded = false;
|
|
},
|
|
|
|
load: function(callback) {
|
|
let file = Gio.File.new_for_path(this.filename);
|
|
|
|
this._show = new GnomeDesktop.BGSlideShow({ filename: this.filename });
|
|
|
|
this._show.load_async(null,
|
|
Lang.bind(this,
|
|
function(object, result) {
|
|
this.loaded = true;
|
|
if (callback)
|
|
callback();
|
|
}));
|
|
},
|
|
|
|
update: function(monitor) {
|
|
this.keyFrameFiles = [];
|
|
|
|
if (!this._show)
|
|
return;
|
|
|
|
if (this._show.get_num_slides() < 1)
|
|
return;
|
|
|
|
let [progress, duration, isFixed, file1, file2] = this._show.get_current_slide(monitor.width, monitor.height);
|
|
|
|
this.transitionDuration = duration;
|
|
this.transitionProgress = progress;
|
|
|
|
if (file1)
|
|
this.keyFrameFiles.push(file1);
|
|
|
|
if (file2)
|
|
this.keyFrameFiles.push(file2);
|
|
},
|
|
});
|
|
Signals.addSignalMethods(Animation.prototype);
|
|
|
|
const BackgroundManager = new Lang.Class({
|
|
Name: 'BackgroundManager',
|
|
|
|
_init: function(params) {
|
|
params = Params.parse(params, { container: null,
|
|
layoutManager: Main.layoutManager,
|
|
monitorIndex: null,
|
|
effects: Meta.BackgroundEffects.NONE,
|
|
controlPosition: true });
|
|
|
|
this._container = params.container;
|
|
this._layoutManager = params.layoutManager;
|
|
this._effects = params.effects;
|
|
this._monitorIndex = params.monitorIndex;
|
|
this._controlPosition = params.controlPosition;
|
|
|
|
this.background = this._createBackground();
|
|
this._newBackground = null;
|
|
},
|
|
|
|
destroy: function() {
|
|
if (this._newBackground) {
|
|
this._newBackground.actor.destroy();
|
|
this._newBackground = null;
|
|
}
|
|
|
|
if (this.background) {
|
|
this.background.actor.destroy();
|
|
this.background = null;
|
|
}
|
|
},
|
|
|
|
_updateBackground: function(background, monitorIndex) {
|
|
let newBackground = this._createBackground(monitorIndex);
|
|
newBackground.vignetteSharpness = background.vignetteSharpness;
|
|
newBackground.brightness = background.brightness;
|
|
newBackground.saturation = background.saturation;
|
|
newBackground.visible = background.visible;
|
|
|
|
newBackground.loadedSignalId = newBackground.connect('loaded',
|
|
Lang.bind(this, function() {
|
|
newBackground.disconnect(newBackground.loadedSignalId);
|
|
newBackground.loadedSignalId = 0;
|
|
Tweener.addTween(background.actor,
|
|
{ opacity: 0,
|
|
time: FADE_ANIMATION_TIME,
|
|
transition: 'easeOutQuad',
|
|
onComplete: Lang.bind(this, function() {
|
|
if (this._newBackground == newBackground) {
|
|
this.background = newBackground;
|
|
this._newBackground = null;
|
|
} else {
|
|
newBackground.actor.destroy();
|
|
}
|
|
|
|
background.actor.destroy();
|
|
|
|
this.emit('changed');
|
|
})
|
|
});
|
|
}));
|
|
|
|
this._newBackground = newBackground;
|
|
},
|
|
|
|
_createBackground: function() {
|
|
let background = new Background({ monitorIndex: this._monitorIndex,
|
|
layoutManager: this._layoutManager,
|
|
effects: this._effects });
|
|
this._container.add_child(background.actor);
|
|
|
|
let monitor = this._layoutManager.monitors[this._monitorIndex];
|
|
|
|
background.actor.set_size(monitor.width, monitor.height);
|
|
if (this._controlPosition) {
|
|
background.actor.set_position(monitor.x, monitor.y);
|
|
background.actor.lower_bottom();
|
|
}
|
|
|
|
background.changeSignalId = background.connect('changed', Lang.bind(this, function() {
|
|
background.disconnect(background.changeSignalId);
|
|
background.changeSignalId = 0;
|
|
this._updateBackground(background, this._monitorIndex);
|
|
}));
|
|
|
|
background.actor.connect('destroy', Lang.bind(this, function() {
|
|
if (background.changeSignalId)
|
|
background.disconnect(background.changeSignalId);
|
|
|
|
if (background.loadedSignalId)
|
|
background.disconnect(background.loadedSignalId);
|
|
}));
|
|
|
|
return background;
|
|
},
|
|
});
|
|
Signals.addSignalMethods(BackgroundManager.prototype);
|