gnome-shell/js/ui/environment.js

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
/* exported init */
const Config = imports.misc.config;
imports.gi.versions.Clutter = Config.LIBMUTTER_API_VERSION;
imports.gi.versions.Gio = '2.0';
imports.gi.versions.GdkPixbuf = '2.0';
imports.gi.versions.Gtk = '3.0';
imports.gi.versions.TelepathyGLib = '0.12';
imports.gi.versions.TelepathyLogger = '0.2';
const { Clutter, GLib, Shell, St } = imports.gi;
const Gettext = imports.gettext;
// We can't import shell JS modules yet, because they may have
// variable initializations, etc, that depend on init() already having
// been run.
// "monkey patch" in some varargs ClutterContainer methods; we need
// to do this per-container class since there is no representation
// of interfaces in Javascript
function _patchContainerClass(containerClass) {
// This one is a straightforward mapping of the C method
containerClass.prototype.child_set = function(actor, props) {
let meta = this.get_child_meta(actor);
for (let prop in props)
meta[prop] = props[prop];
};
// clutter_container_add() actually is a an add-many-actors
// method. We conveniently, but somewhat dubiously, take the
// this opportunity to make it do something more useful.
containerClass.prototype.add = function(actor, props) {
this.add_actor(actor);
if (props)
this.child_set(actor, props);
};
}
function _patchLayoutClass(layoutClass, styleProps) {
if (styleProps)
layoutClass.prototype.hookup_style = function(container) {
container.connect('style-changed', () => {
let node = container.get_theme_node();
for (let prop in styleProps) {
let [found, length] = node.lookup_length(styleProps[prop], false);
if (found)
this[prop] = length;
}
});
};
layoutClass.prototype.child_set = function(actor, props) {
let meta = this.get_child_meta(actor.get_parent(), actor);
for (let prop in props)
meta[prop] = props[prop];
};
}
function _makeEaseCallback(params) {
let onComplete = params.onComplete;
delete params.onComplete;
let onStopped = params.onStopped;
delete params.onStopped;
if (!onComplete && !onStopped)
return null;
return isFinished => {
if (onStopped)
onStopped(isFinished);
if (onComplete && isFinished)
onComplete();
};
}
function _getPropertyTarget(actor, propName) {
if (!propName.startsWith('@'))
return [actor, propName];
let [type, name, prop] = propName.split('.');
switch (type) {
case '@layout':
return [actor.layout_manager, name];
case '@actions':
return [actor.get_action(name), prop];
case '@constraints':
return [actor.get_constraint(name), prop];
case '@effects':
return [actor.get_effect(name), prop];
}
throw new Error(`Invalid property name ${propName}`);
}
function _easeActor(actor, params) {
actor.save_easing_state();
if (params.duration != undefined)
actor.set_easing_duration(params.duration);
delete params.duration;
if (params.delay != undefined)
actor.set_easing_delay(params.delay);
delete params.delay;
if (params.mode != undefined)
actor.set_easing_mode(params.mode);
delete params.mode;
let callback = _makeEaseCallback(params);
// cancel overwritten transitions
let animatedProps = Object.keys(params).map(p => p.replace('_', '-', 'g'));
animatedProps.forEach(p => actor.remove_transition(p));
actor.set(params);
actor.restore_easing_state();
if (callback) {
let transition = actor.get_transition(animatedProps[0]);
if (transition)
transition.connect('stopped', (t, finished) => callback(finished));
else
callback(true);
}
}
function _easeActorProperty(actor, propName, target, params) {
// Avoid pointless difference with ease()
if (params.mode)
params.progress_mode = params.mode;
delete params.mode;
if (params.duration)
params.duration = adjustAnimationTime(params.duration);
let duration = Math.floor(params.duration || 0);
// Copy Clutter's behavior for implicit animations, see
// should_skip_implicit_transition()
if (actor instanceof Clutter.Actor && !actor.mapped)
duration = 0;
let callback = _makeEaseCallback(params);
// cancel overwritten transition
actor.remove_transition(propName);
if (duration == 0) {
let [obj, prop] = _getPropertyTarget(actor, propName);
obj[prop] = target;
if (callback)
callback(true);
return;
}
let pspec = actor.find_property(propName);
let transition = new Clutter.PropertyTransition(Object.assign({
property_name: propName,
interval: new Clutter.Interval({ value_type: pspec.value_type }),
remove_on_complete: true
}, params));
actor.add_transition(propName, transition);
transition.set_to(target);
if (callback)
transition.connect('stopped', (t, finished) => callback(finished));
}
function _loggingFunc(...args) {
let fields = { 'MESSAGE': args.join(', ') };
let domain = "GNOME Shell";
// If the caller is an extension, add it as metadata
let extension = imports.misc.extensionUtils.getCurrentExtension();
if (extension != null) {
domain = extension.metadata.name;
fields['GNOME_SHELL_EXTENSION_UUID'] = extension.uuid;
fields['GNOME_SHELL_EXTENSION_NAME'] = extension.metadata.name;
}
GLib.log_structured(domain, GLib.LogLevelFlags.LEVEL_MESSAGE, fields);
}
function init() {
// Add some bindings to the global JS namespace; (gjs keeps the web
// browser convention of having that namespace be called 'window'.)
window.global = Shell.Global.get();
window.log = _loggingFunc;
window._ = Gettext.gettext;
window.C_ = Gettext.pgettext;
window.ngettext = Gettext.ngettext;
window.N_ = s => s;
// Miscellaneous monkeypatching
_patchContainerClass(St.BoxLayout);
_patchLayoutClass(Clutter.TableLayout, { row_spacing: 'spacing-rows',
column_spacing: 'spacing-columns' });
_patchLayoutClass(Clutter.GridLayout, { row_spacing: 'spacing-rows',
column_spacing: 'spacing-columns' });
_patchLayoutClass(Clutter.BoxLayout, { spacing: 'spacing' });
let origSetEasingDuration = Clutter.Actor.prototype.set_easing_duration;
Clutter.Actor.prototype.set_easing_duration = function(msecs) {
origSetEasingDuration.call(this, adjustAnimationTime(msecs));
};
let origSetEasingDelay = Clutter.Actor.prototype.set_easing_delay;
Clutter.Actor.prototype.set_easing_delay = function(msecs) {
origSetEasingDelay.call(this, adjustAnimationTime(msecs));
};
Clutter.Actor.prototype.ease = function(props, easingParams) {
_easeActor(this, props, easingParams);
};
Clutter.Actor.prototype.ease_property = function(propName, target, params) {
_easeActorProperty(this, propName, target, params);
};
St.Adjustment.prototype.ease = function(target, params) {
// we're not an actor of course, but we implement the same
// transition API as Clutter.Actor, so this works anyway
_easeActorProperty(this, 'value', target, params);
};
Clutter.Actor.prototype.toString = function() {
return St.describe_actor(this);
};
// Deprecation warning for former JS classes turned into an actor subclass
Object.defineProperty(Clutter.Actor.prototype, 'actor', {
get() {
let klass = this.constructor.name;
let { stack } = new Error();
log(`Usage of object.actor is deprecated for ${klass}\n${stack}`);
return this;
}
});
St.set_slow_down_factor = function(factor) {
let { stack } = new Error();
log(`St.set_slow_down_factor() is deprecated, use St.Settings.slow_down_factor\n${stack}`);
St.Settings.get().slow_down_factor = factor;
};
let origToString = Object.prototype.toString;
Object.prototype.toString = function() {
let base = origToString.call(this);
try {
if ('actor' in this && this.actor instanceof Clutter.Actor)
return base.replace(/\]$/, ` delegate for ${this.actor.toString().substring(1)}`);
else
return base;
} catch (e) {
return base;
}
};
// Work around https://bugzilla.mozilla.org/show_bug.cgi?id=508783
Date.prototype.toLocaleFormat = function(format) {
return Shell.util_format_date(format, this.getTime());
};
let slowdownEnv = GLib.getenv('GNOME_SHELL_SLOWDOWN_FACTOR');
if (slowdownEnv) {
let factor = parseFloat(slowdownEnv);
if (!isNaN(factor) && factor > 0.0)
St.Settings.get().slow_down_factor = factor;
}
// OK, now things are initialized enough that we can import shell JS
const Format = imports.format;
const Tweener = imports.ui.tweener;
Tweener.init();
String.prototype.format = Format.format;
}
// adjustAnimationTime:
// @msecs: time in milliseconds
//
// Adjust @msecs to account for St's enable-animations
// and slow-down-factor settings
function adjustAnimationTime(msecs) {
let settings = St.Settings.get();
if (!settings.enable_animations)
return 1;
return settings.slow_down_factor * msecs;
}