gnome-shell/js/ui/screencast.js

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Lang = imports.lang;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const Hash = imports.misc.hash;
const Main = imports.ui.main;
const ScreencastIface = '<node> \
<interface name="org.gnome.Shell.Screencast"> \
<method name="Screencast"> \
<arg type="s" direction="in" name="file_template"/> \
<arg type="a{sv}" direction="in" name="options"/> \
<arg type="b" direction="out" name="success"/> \
<arg type="s" direction="out" name="filename_used"/> \
</method> \
<method name="ScreencastArea"> \
<arg type="i" direction="in" name="x"/> \
<arg type="i" direction="in" name="y"/> \
<arg type="i" direction="in" name="width"/> \
<arg type="i" direction="in" name="height"/> \
<arg type="s" direction="in" name="file_template"/> \
<arg type="a{sv}" direction="in" name="options"/> \
<arg type="b" direction="out" name="success"/> \
<arg type="s" direction="out" name="filename_used"/> \
</method> \
<method name="StopScreencast"> \
<arg type="b" direction="out" name="success"/> \
</method> \
</interface> \
</node>';
const ScreencastService = new Lang.Class({
Name: 'ScreencastService',
_init: function() {
this._dbusImpl = Gio.DBusExportedObject.wrapJSObject(ScreencastIface, this);
this._dbusImpl.export(Gio.DBus.session, '/org/gnome/Shell/Screencast');
Gio.DBus.session.own_name('org.gnome.Shell.Screencast', Gio.BusNameOwnerFlags.REPLACE, null, null);
this._recorders = new Hash.Map();
Main.sessionMode.connect('updated', Lang.bind(this, this._sessionUpdated));
},
get isRecording() {
return this._recorders.size() > 0;
},
_ensureRecorderForSender: function(sender) {
let recorder = this._recorders.get(sender);
if (!recorder) {
recorder = new Shell.Recorder({ stage: global.stage,
screen: global.screen });
recorder._watchNameId =
Gio.bus_watch_name(Gio.BusType.SESSION, sender, 0, null,
Lang.bind(this, this._onNameVanished));
this._recorders.set(sender, recorder);
this.emit('updated');
}
return recorder;
},
_sessionUpdated: function() {
if (Main.sessionMode.allowScreencast)
return;
for (let sender in this._recorders.keys())
this._recorders.delete(sender);
this.emit('updated');
},
_onNameVanished: function(connection, name) {
this._stopRecordingForSender(name);
},
_stopRecordingForSender: function(sender) {
let recorder = this._recorders.get(sender);
if (!recorder)
return false;
Gio.bus_unwatch_name(recorder._watchNameId);
recorder.close();
this._recorders.delete(sender);
this.emit('updated');
return true;
},
_applyOptionalParameters: function(recorder, options) {
for (let option in options)
options[option] = options[option].deep_unpack();
if (options['pipeline'])
recorder.set_pipeline(options['pipeline']);
if (options['framerate'])
recorder.set_framerate(options['framerate']);
if (options['draw-cursor'])
recorder.set_draw_cursor(options['draw-cursor']);
},
ScreencastAsync: function(params, invocation) {
let returnValue = [false, ''];
if (!Main.sessionMode.allowScreencast) {
invocation.return_value(GLib.Variant.new('(bs)', returnValue));
return;
}
let sender = invocation.get_sender();
let recorder = this._ensureRecorderForSender(sender);
if (!recorder.is_recording()) {
let [fileTemplate, options] = params;
recorder.set_file_template(fileTemplate);
this._applyOptionalParameters(recorder, options);
let [success, fileName] = recorder.record();
returnValue = [success, fileName ? fileName : ''];
}
invocation.return_value(GLib.Variant.new('(bs)', returnValue));
},
ScreencastAreaAsync: function(params, invocation) {
let returnValue = [false, ''];
if (!Main.sessionMode.allowScreencast) {
invocation.return_value(GLib.Variant.new('(bs)', returnValue));
return;
}
let sender = invocation.get_sender();
let recorder = this._ensureRecorderForSender(sender);
if (!recorder.is_recording()) {
let [x, y, width, height, fileTemplate, options] = params;
if (x < 0 || y < 0 ||
width <= 0 || height <= 0 ||
x + width > global.screen_width ||
y + height > global.screen_height) {
invocation.return_error_literal(Gio.IOErrorEnum,
Gio.IOErrorEnum.CANCELLED,
"Invalid params");
return;
}
recorder.set_file_template(fileTemplate);
recorder.set_area(x, y, width, height);
this._applyOptionalParameters(recorder, options);
let [success, fileName] = recorder.record();
returnValue = [success, fileName ? fileName : ''];
}
invocation.return_value(GLib.Variant.new('(bs)', returnValue));
},
StopScreencastAsync: function(params, invocation) {
let success = this._stopRecordingForSender(invocation.get_sender());
invocation.return_value(GLib.Variant.new('(b)', [success]));
}
});
Signals.addSignalMethods(ScreencastService.prototype);