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gnome-shell/js/ui/screenShield.js
Florian Müllner 6bcad45392 screenShield: Use inhibitors to lock screen on suspend 
If the screen lock is enabled, lock the screen before suspension.
When using systemd, this will cover both explicitly suspending from
the user menu and suspension initiated by g-s-d (lid close, power
button).

https://bugzilla.gnome.org/show_bug.cgi?id=686482
2013-02-06 01:01:52 +01:00

1207 lines
44 KiB
JavaScript
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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Cairo = imports.cairo;
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const GnomeDesktop = imports.gi.GnomeDesktop;
const Lang = imports.lang;
const Mainloop = imports.mainloop;
const Meta = imports.gi.Meta;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const St = imports.gi.St;
const TweenerEquations = imports.tweener.equations;
const GnomeSession = imports.misc.gnomeSession;
const Hash = imports.misc.hash;
const Layout = imports.ui.layout;
const LoginManager = imports.misc.loginManager;
const Lightbox = imports.ui.lightbox;
const Main = imports.ui.main;
const Overview = imports.ui.overview;
const MessageTray = imports.ui.messageTray;
const ShellDBus = imports.ui.shellDBus;
const Tweener = imports.ui.tweener;
const Util = imports.misc.util;
const SCREENSAVER_SCHEMA = 'org.gnome.desktop.screensaver';
const LOCK_ENABLED_KEY = 'lock-enabled';
const LOCK_DELAY_KEY = 'lock-delay';
const CURTAIN_SLIDE_TIME = 0.3;
// fraction of screen height the arrow must reach before completing
// the slide up automatically
const ARROW_DRAG_THRESHOLD = 0.1;
// Parameters for the arrow animation
const N_ARROWS = 3;
const ARROW_ANIMATION_TIME = 0.6;
const ARROW_ANIMATION_PEAK_OPACITY = 0.4;
// The distance in px that the lock screen will move to when pressing
// a key that has no effect in the lock screen (bumping it)
const BUMP_SIZE = 25;
const BUMP_TIME = 0.3;
const SUMMARY_ICON_SIZE = 48;
// Lightbox fading times
// STANDARD_FADE_TIME is used when the session goes idle, while
// SHORT_FADE_TIME is used when requesting lock explicitly from the user menu
const STANDARD_FADE_TIME = 10;
const SHORT_FADE_TIME = 0.3;
function sample(offx, offy) {
return 'texel += texture2D (sampler, tex_coord.st + pixel_step * ' +
'vec2 (' + offx + ',' + offy + '));\n'
}
const GLSL_BLUR_EFFECT_DECLARATIONS = ' \
uniform vec2 pixel_step;\n \
uniform float desaturation;\n \
vec4 apply_blur(in sampler2D sampler, in vec2 tex_coord) {\n \
vec4 texel;\n \
texel = texture2D (sampler, tex_coord.st);\n'
+ sample(-1.0, -1.0)
+ sample( 0.0, -1.0)
+ sample(+1.0, -1.0)
+ sample(-1.0, 0.0)
+ sample(+1.0, 0.0)
+ sample(-1.0, +1.0)
+ sample( 0.0, +1.0)
+ sample(+1.0, +1.0) + ' \
texel /= 9.0;\n \
return texel;\n \
}\n \
vec3 desaturate (const vec3 color)\n \
{\n \
const vec3 gray_conv = vec3 (0.299, 0.587, 0.114);\n \
vec3 gray = vec3 (dot (gray_conv, color));\n \
return vec3 (mix (color.rgb, gray, desaturation));\n \
}';
const GLSL_BLUR_EFFECT_CODE = ' \
cogl_texel = apply_blur(cogl_sampler, cogl_tex_coord.st);\n \
cogl_texel.rgb = desaturate(cogl_texel.rgb);\n';
const Clock = new Lang.Class({
Name: 'ScreenShieldClock',
CLOCK_FORMAT_KEY: 'clock-format',
CLOCK_SHOW_SECONDS_KEY: 'clock-show-seconds',
_init: function() {
this.actor = new St.BoxLayout({ style_class: 'screen-shield-clock',
vertical: true });
this._time = new St.Label({ style_class: 'screen-shield-clock-time' });
this._date = new St.Label({ style_class: 'screen-shield-clock-date' });
this.actor.add(this._time, { x_align: St.Align.MIDDLE });
this.actor.add(this._date, { x_align: St.Align.MIDDLE });
this._wallClock = new GnomeDesktop.WallClock({ time_only: true });
this._wallClock.connect('notify::clock', Lang.bind(this, this._updateClock));
this._updateClock();
},
_updateClock: function() {
this._time.text = this._wallClock.clock;
let date = new Date();
/* Translators: This is a time format for a date in
long format */
this._date.text = date.toLocaleFormat(_("%A, %B %d"));
},
destroy: function() {
this.actor.destroy();
this._wallClock.run_dispose();
}
});
const NotificationsBox = new Lang.Class({
Name: 'NotificationsBox',
_init: function() {
this.actor = new St.BoxLayout({ vertical: true,
name: 'screenShieldNotifications',
style_class: 'screen-shield-notifications-box' });
this._musicBin = new St.Bin({ style_class: 'screen-shield-notifications-box',
visible: false });
let scrollView = new St.ScrollView({ x_fill: false, x_align: St.Align.START });
this._notificationBox = new St.BoxLayout({ vertical: true,
style_class: 'screen-shield-notifications-box' });
scrollView.add_actor(this._notificationBox);
this.actor.add(this._musicBin);
this.actor.add(scrollView, { x_fill: true, x_align: St.Align.START });
this._sources = new Hash.Map();
Main.messageTray.getSources().forEach(Lang.bind(this, function(source) {
this._sourceAdded(Main.messageTray, source, true);
}));
this._updateVisibility();
this._sourceAddedId = Main.messageTray.connect('source-added', Lang.bind(this, this._sourceAdded));
},
destroy: function() {
if (this._sourceAddedId) {
Main.messageTray.disconnect(this._sourceAddedId);
this._sourceAddedId = 0;
}
let items = this._sources.items();
for (let i = 0; i < items.length; i++) {
let [source, obj] = items[i];
this._removeSource(source, obj);
}
this.actor.destroy();
},
_updateVisibility: function() {
this._musicBin.visible = this._musicBin.child != null && this._musicBin.child.visible;
this._notificationBox.visible = this._notificationBox.get_children().some(function(a) {
return a.visible;
});
this.actor.visible = this._musicBin.visible || this._notificationBox.visible;
},
_makeNotificationCountText: function(count, isChat) {
if (isChat)
return ngettext("%d new message", "%d new messages", count).format(count);
else
return ngettext("%d new notification", "%d new notifications", count).format(count);
},
_makeNotificationSource: function(source, box) {
let sourceActor = new MessageTray.SourceActor(source, SUMMARY_ICON_SIZE);
box.add(sourceActor.actor, { y_fill: true });
let textBox = new St.BoxLayout({ vertical: true });
box.add(textBox, { y_fill: false, y_align: St.Align.START });
let title = new St.Label({ text: source.title,
style_class: 'screen-shield-notification-label' });
textBox.add(title);
let count = source.unseenCount;
let countLabel = new St.Label({ text: this._makeNotificationCountText(count, source.isChat),
style_class: 'screen-shield-notification-count-text' });
textBox.add(countLabel);
box.visible = count != 0;
return [title, countLabel];
},
_makeNotificationDetailedSource: function(source, box) {
let sourceActor = new MessageTray.SourceActor(source, SUMMARY_ICON_SIZE);
box.add(sourceActor.actor, { y_fill: true });
let textBox = new St.BoxLayout({ vertical: true });
box.add(textBox, { y_fill: false, y_align: St.Align.START });
let title = new St.Label({ text: source.title,
style_class: 'screen-shield-notification-label' });
textBox.add(title);
let visible = false;
for (let i = 0; i < source.notifications.length; i++) {
let n = source.notifications[i];
if (n.acknowledged || n.isMusic)
continue;
let body = '';
if (n.bannerBodyText) {
body = n.bannerBodyMarkup ? n.bannerBodyText :
GLib.markup_escape_text(n.bannerBodyMarkup, -1);
}
let label = new St.Label({ style_class: 'screen-shield-notification-count-text' });
label.clutter_text.set_markup('<b>' + n.title + '</b> ' + body);
textBox.add(label);
visible = true;
}
box.visible = visible;
return [title, null];
},
_showSource: function(source, obj, box) {
let musicNotification = source.getMusicNotification();
if (musicNotification != null &&
this._musicBin.child == null) {
if (musicNotification.actor.get_parent() != null)
musicNotification.actor.get_parent().remove_actor(musicNotification.actor);
this._musicBin.child = musicNotification.actor;
this._musicBin.child.visible = obj.visible;
musicNotification.expand(false /* animate */);
obj.musicNotification = musicNotification;
}
if (obj.detailed) {
[obj.titleLabel, obj.countLabel] = this._makeNotificationDetailedSource(source, box);
} else {
[obj.titleLabel, obj.countLabel] = this._makeNotificationSource(source, box);
}
box.visible = obj.visible &&
(source.unseenCount > (musicNotification ? 1 : 0));
},
_sourceAdded: function(tray, source, dontUpdateVisibility) {
// Ignore transient sources
if (source.isTransient)
return;
let obj = {
visible: source.policy.showInLockScreen,
detailed: source.policy.detailsInLockScreen,
sourceDestroyId: 0,
sourceCountChangedId: 0,
sourceTitleChangedId: 0,
sourceUpdatedId: 0,
musicNotification: null,
sourceBox: null,
titleLabel: null,
countLabel: null,
};
obj.sourceBox = new St.BoxLayout({ style_class: 'screen-shield-notification-source' });
this._showSource(source, obj, obj.sourceBox);
this._notificationBox.add(obj.sourceBox, { x_fill: false, x_align: St.Align.START });
obj.sourceCountChangedId = source.connect('count-updated', Lang.bind(this, function(source) {
this._countChanged(source, obj);
}));
obj.sourceTitleChangedId = source.connect('title-changed', Lang.bind(this, function(source) {
this._titleChanged(source, obj);
}));
obj.policyChangedId = source.policy.connect('policy-changed', Lang.bind(this, function(policy, key) {
if (key == 'show-in-lock-screen')
this._visibleChanged(source, obj);
else
this._detailedChanged(source, obj);
}));
obj.sourceDestroyId = source.connect('destroy', Lang.bind(this, function(source) {
this._onSourceDestroy(source, obj);
}));
this._sources.set(source, obj);
if (!dontUpdateVisibility)
this._updateVisibility();
},
_titleChanged: function(source, obj) {
obj.titleLabel.text = source.title;
},
_countChanged: function(source, obj) {
if (obj.detailed) {
// A new notification was pushed, or a previous notification was destroyed.
// Give up, and build the list again.
obj.sourceBox.destroy_all_children();
obj.titleLabel = obj.countLabel = null;
this._showSource(source, obj, obj.sourceBox);
} else {
let count = source.unseenCount;
obj.countLabel.text = this._makeNotificationCountText(count, source.isChat);
}
obj.sourceBox.visible = obj.visible &&
(source.unseenCount > (obj.musicNotification ? 1 : 0));
this._updateVisibility();
},
_visibleChanged: function(source, obj) {
if (obj.visible == source.policy.showInLockScreen)
return;
obj.visible = source.policy.showInLockScreen;
if (obj.musicNotification)
obj.musicNotification.actor.visible = obj.visible;
obj.sourceBox.visible = obj.visible &&
source.unseenCount > (obj.musicNotification ? 1 : 0);
this._updateVisibility();
},
_detailedChanged: function(source, obj) {
if (obj.detailed == source.policy.detailsInLockScreen)
return;
obj.detailed = source.policy.detailsInLockScreen;
obj.sourceBox.destroy_all_children();
obj.titleLabel = obj.countLabel = null;
this._showSource(source, obj, obj.sourceBox);
},
_onSourceDestroy: function(source, obj) {
this._removeSource(source, obj);
this._updateVisibility();
},
_removeSource: function(source, obj) {
obj.sourceBox.destroy();
obj.sourceBox = obj.titleLabel = obj.countLabel = null;
if (obj.musicNotification) {
this._musicBin.child = null;
obj.musicNotification = null;
}
source.disconnect(obj.sourceDestroyId);
source.disconnect(obj.sourceCountChangedId);
source.disconnect(obj.sourceTitleChangedId);
source.policy.disconnect(obj.policyChangedId);
this._sources.delete(source);
},
});
const Arrow = new Lang.Class({
Name: 'Arrow',
Extends: St.Bin,
_init: function(params) {
this.parent(params);
this.x_fill = this.y_fill = true;
this.set_offscreen_redirect(Clutter.OffscreenRedirect.ALWAYS);
this._drawingArea = new St.DrawingArea();
this._drawingArea.connect('repaint', Lang.bind(this, this._drawArrow));
this.child = this._drawingArea;
this._shadowHelper = null;
this._shadowWidth = this._shadowHeight = 0;
},
_drawArrow: function(arrow) {
let cr = arrow.get_context();
let [w, h] = arrow.get_surface_size();
let node = this.get_theme_node();
let thickness = node.get_length('-arrow-thickness');
Clutter.cairo_set_source_color(cr, node.get_foreground_color());
cr.setLineCap(Cairo.LineCap.ROUND);
cr.setLineWidth(thickness);
cr.moveTo(thickness / 2, h - thickness / 2);
cr.lineTo(w/2, thickness);
cr.lineTo(w - thickness / 2, h - thickness / 2);
cr.stroke();
},
vfunc_style_changed: function() {
let node = this.get_theme_node();
this._shadow = node.get_shadow('-arrow-shadow');
if (this._shadow)
this._shadowHelper = St.ShadowHelper.new(this._shadow);
else
this._shadowHelper = null;
},
vfunc_paint: function() {
if (this._shadowHelper) {
this._shadowHelper.update(this._drawingArea);
let allocation = this._drawingArea.get_allocation_box();
let paintOpacity = this._drawingArea.get_paint_opacity();
this._shadowHelper.paint(allocation, paintOpacity);
}
this._drawingArea.paint();
}
});
function clamp(value, min, max) {
return Math.max(min, Math.min(max, value));
}
/**
* To test screen shield, make sure to kill gnome-screensaver.
*
* If you are setting org.gnome.desktop.session.idle-delay directly in dconf,
* rather than through System Settings, you also need to set
* org.gnome.settings-daemon.plugins.power.sleep-display-ac and
* org.gnome.settings-daemon.plugins.power.sleep-display-battery to the same value.
* This will ensure that the screen blanks at the right time when it fades out.
* https://bugzilla.gnome.org/show_bug.cgi?id=668703 explains the dependance.
*/
const ScreenShield = new Lang.Class({
Name: 'ScreenShield',
_init: function() {
this.actor = Main.layoutManager.screenShieldGroup;
this._lockScreenState = MessageTray.State.HIDDEN;
this._lockScreenGroup = new St.Widget({ x_expand: true,
y_expand: true,
reactive: true,
can_focus: true,
name: 'lockScreenGroup',
visible: false,
});
this._lockScreenGroup.connect('key-release-event',
Lang.bind(this, this._onLockScreenKeyRelease));
this._lockScreenGroup.connect('scroll-event',
Lang.bind(this, this._onLockScreenScroll));
Main.ctrlAltTabManager.addGroup(this._lockScreenGroup, _("Lock"), 'changes-prevent-symbolic');
this._lockScreenContents = new St.Widget({ layout_manager: new Clutter.BinLayout(),
name: 'lockScreenContents' });
this._lockScreenContents.add_constraint(new Layout.MonitorConstraint({ primary: true }));
let backgroundActor = Meta.BackgroundActor.new_for_screen(global.screen);
backgroundActor.add_glsl_snippet(Meta.SnippetHook.TEXTURE_LOOKUP,
GLSL_BLUR_EFFECT_DECLARATIONS,
GLSL_BLUR_EFFECT_CODE,
true);
backgroundActor.set_uniform_float('desaturation',
1, 1, [0.6]);
backgroundActor.connect('notify::size', function(actor) {
actor.set_uniform_float('pixel_step', 2, 1, [1/actor.width, 1/actor.height]);
});
this._background = new St.Bin({ style_class: 'screen-shield-background',
child: backgroundActor });
this._lockScreenGroup.add_actor(this._background);
this._lockScreenGroup.add_actor(this._lockScreenContents);
this._arrowContainer = new St.BoxLayout({ style_class: 'screen-shield-arrows',
vertical: true,
x_align: Clutter.ActorAlign.CENTER,
y_align: Clutter.ActorAlign.END,
// HACK: without these, ClutterBinLayout
// ignores alignment properties on the actor
x_expand: true,
y_expand: true });
for (let i = 0; i < N_ARROWS; i++) {
let arrow = new Arrow({ opacity: 0 });
this._arrowContainer.add_actor(arrow);
}
this._lockScreenContents.add_actor(this._arrowContainer);
this._dragAction = new Clutter.GestureAction();
this._dragAction.connect('gesture-begin', Lang.bind(this, this._onDragBegin));
this._dragAction.connect('gesture-progress', Lang.bind(this, this._onDragMotion));
this._dragAction.connect('gesture-end', Lang.bind(this, this._onDragEnd));
this._lockScreenGroup.add_action(this._dragAction);
this._lockDialogGroup = new St.Widget({ x_expand: true,
y_expand: true,
pivot_point: new Clutter.Point({ x: 0.5, y: 0.5 }),
name: 'lockDialogGroup' });
this.actor.add_actor(this._lockDialogGroup);
this.actor.add_actor(this._lockScreenGroup);
this._presence = new GnomeSession.Presence(Lang.bind(this, function(proxy, error) {
if (error) {
logError(error, 'Error while reading gnome-session presence');
return;
}
this._onStatusChanged(proxy.status);
}));
this._presence.connectSignal('StatusChanged', Lang.bind(this, function(proxy, senderName, [status]) {
this._onStatusChanged(status);
}));
this._screenSaverDBus = new ShellDBus.ScreenSaverDBus(this);
this._inhibitor = null;
this._loginManager = LoginManager.getLoginManager();
this._loginManager.connect('prepare-for-sleep',
Lang.bind(this, this._prepareForSleep));
this._inhibitSuspend();
this._loginSession = this._loginManager.getCurrentSessionProxy();
this._loginSession.connectSignal('Lock', Lang.bind(this, function() { this.lock(false); }));
this._loginSession.connectSignal('Unlock', Lang.bind(this, function() { this.deactivate(false); }));
this._settings = new Gio.Settings({ schema: SCREENSAVER_SCHEMA });
this._isModal = false;
this._hasLockScreen = false;
this._isGreeter = false;
this._isActive = false;
this._isLocked = false;
this._inUnlockAnimation = false;
this._activationTime = 0;
this._becameActiveId = 0;
this._lockTimeoutId = 0;
this._lightbox = new Lightbox.Lightbox(Main.uiGroup,
{ inhibitEvents: true,
fadeInTime: STANDARD_FADE_TIME,
fadeFactor: 1 });
this._lightbox.connect('shown', Lang.bind(this, this._onLightboxShown));
this.idleMonitor = new GnomeDesktop.IdleMonitor();
},
_liftShield: function(onPrimary, velocity) {
if (this._isLocked) {
this._ensureUnlockDialog(onPrimary, true /* allowCancel */);
this._hideLockScreen(true /* animate */, velocity);
} else {
this.deactivate(true /* animate */);
}
},
_onLockScreenKeyRelease: function(actor, event) {
let symbol = event.get_key_symbol();
// Do nothing if the lock screen is not fully shown.
// This avoids reusing the previous (and stale) unlock
// dialog if esc is pressed while the curtain is going
// down after cancel.
// Similarly, don't bump if the lock screen is not showing or is
// animating, as the bump overrides the animation and would
// remove any onComplete handler.
if (this._lockScreenState != MessageTray.State.SHOWN)
return false;
if (symbol == Clutter.KEY_Escape ||
symbol == Clutter.KEY_Return ||
symbol == Clutter.KEY_KP_Enter) {
this._liftShield(false, 0);
return true;
}
this._bumpLockScreen();
return true;
},
_onLockScreenScroll: function(actor, event) {
if (this._lockScreenState != MessageTray.State.SHOWN)
return false;
let delta = 0;
if (event.get_scroll_direction() == Clutter.ScrollDirection.UP)
delta = 5;
else if (event.get_scroll_direction() == Clutter.ScrollDirection.SMOOTH)
delta = Math.max(0, event.get_scroll_delta()[0]);
this._lockScreenScrollCounter += delta;
// 7 standard scrolls to lift up
if (this._lockScreenScrollCounter > 35) {
this._liftShield(true, 0);
}
return true;
},
_inhibitSuspend: function() {
this._loginManager.inhibit(_("GNOME needs to lock the screen"),
Lang.bind(this, function(inhibitor) {
this._inhibitor = inhibitor;
}));
},
_uninhibitSuspend: function() {
if (this._inhibitor)
this._inhibitor.close(null);
this._inhibitor = null;
},
_prepareForSleep: function(loginManager, aboutToSuspend) {
if (aboutToSuspend) {
if (!this._settings.get_boolean(LOCK_ENABLED_KEY)) {
this._uninhibitSuspend();
return;
}
this.lock(true);
} else {
this._inhibitSuspend();
}
},
_animateArrows: function() {
let arrows = this._arrowContainer.get_children();
let unitaryDelay = ARROW_ANIMATION_TIME / (arrows.length + 1);
let maxOpacity = 255 * ARROW_ANIMATION_PEAK_OPACITY;
for (let i = 0; i < arrows.length; i++) {
arrows.opacity = 0;
Tweener.addTween(arrows[i],
{ opacity: 0,
delay: unitaryDelay * (N_ARROWS - (i + 1)),
time: ARROW_ANIMATION_TIME,
transition: function(t, b, c, d) {
if (t < d/2)
return TweenerEquations.easeOutQuad(t, 0, maxOpacity, d/2);
else
return TweenerEquations.easeInQuad(t - d/2, maxOpacity, -maxOpacity, d/2);
}
});
}
return true;
},
_onDragBegin: function() {
Tweener.removeTweens(this._lockScreenGroup);
this._lockScreenState = MessageTray.State.HIDING;
if (this._isLocked)
this._ensureUnlockDialog(false, false);
return true;
},
_onDragMotion: function() {
let [origX, origY] = this._dragAction.get_press_coords(0);
let [currentX, currentY] = this._dragAction.get_motion_coords(0);
let newY = currentY - origY;
newY = clamp(newY, -global.stage.height, 0);
this._lockScreenGroup.y = newY;
return true;
},
_onDragEnd: function(action, actor, eventX, eventY, modifiers) {
if (this._lockScreenGroup.y < -(ARROW_DRAG_THRESHOLD * global.stage.height)) {
// Complete motion automatically
let [velocity, velocityX, velocityY] = this._dragAction.get_velocity(0);
this._liftShield(true, -velocityY);
} else {
// restore the lock screen to its original place
// try to use the same speed as the normal animation
let h = global.stage.height;
let time = CURTAIN_SLIDE_TIME * (-this._lockScreenGroup.y) / h;
Tweener.removeTweens(this._lockScreenGroup);
Tweener.addTween(this._lockScreenGroup,
{ y: 0,
time: time,
transition: 'easeInQuad',
onComplete: function() {
this._lockScreenGroup.fixed_position_set = false;
this._lockScreenState = MessageTray.State.SHOWN;
},
onCompleteScope: this,
});
// If we have a unlock dialog, cancel it
if (this._dialog) {
this._dialog.cancel();
if (!this._isGreeter) {
this._dialog = null;
}
}
}
},
_onStatusChanged: function(status) {
if (status != GnomeSession.PresenceStatus.IDLE)
return;
if (this._dialog) {
this._dialog.cancel();
if (!this._isGreeter) {
this._dialog = null;
}
}
if (!this._isModal) {
Main.pushModal(this.actor, { keybindingMode: Shell.KeyBindingMode.LOCK_SCREEN });
this._isModal = true;
}
if (this._lightbox.actor.visible ||
this._isActive) {
// We're either shown and active, or in the process of
// showing.
// The latter is a very unlikely condition (it requires
// idle-delay < 20), but in any case we have nothing
// to do at this point: either isActive is true, or
// it will soon be.
// isActive can also be true if the lightbox is hidden,
// in case the shield is down and the user hasn't unlocked yet
return;
}
this._lightbox.show();
if (this._activationTime == 0)
this._activationTime = GLib.get_monotonic_time();
if (this._becameActiveId == 0)
this._becameActiveId = this.idleMonitor.connect('became-active',
Lang.bind(this, this._onUserBecameActive));
let shouldLock = this._settings.get_boolean(LOCK_ENABLED_KEY) && !this._isLocked;
if (shouldLock) {
let lockTimeout = Math.max(STANDARD_FADE_TIME, this._settings.get_uint(LOCK_DELAY_KEY));
this._lockTimeoutId = Mainloop.timeout_add(lockTimeout * 1000,
Lang.bind(this, function() {
this._lockTimeoutId = 0;
this.lock(true);
return false;
}));
}
},
_onUserBecameActive: function() {
// This function gets called here when the user becomes active
// after gnome-session changed the status to IDLE
// There are four possibilities here:
// - we're called when already locked; isActive and isLocked are true,
// we just go back to the lock screen curtain
// - we're called before the lightbox is fully shown; at this point
// isActive is false, so we just hide the ligthbox, reset the activationTime
// and go back to the unlocked desktop
// - we're called after showing the lightbox, but before the lock
// delay; this is mostly like the case above, but isActive is true now
// so we need to notify gnome-settings-daemon to go back to the normal
// policies for blanking
// (they're handled by the same code, and we emit one extra ActiveChanged
// signal in the case above)
// - we're called after showing the lightbox and after lock-delay; the
// session is effectivelly locked now, it's time to build and show
// the lock screen
this.idleMonitor.disconnect(this._becameActiveId);
this._becameActiveId = 0;
let lightboxWasShown = this._lightbox.shown;
this._lightbox.hide();
// Shortcircuit in case the mouse was moved before the fade completed
if (!lightboxWasShown) {
this.deactivate(false);
return;
}
},
_onLightboxShown: function() {
this.activate(false);
},
showDialog: function() {
// Ensure that the stage window is mapped, before taking a grab
// otherwise X errors out
Meta.later_add(Meta.LaterType.BEFORE_REDRAW, Lang.bind(this, function() {
if (!this._isModal) {
Main.pushModal(this.actor);
this._isModal = true;
}
return false;
}));
this.actor.show();
this._isGreeter = Main.sessionMode.isGreeter;
this._isLocked = true;
this._ensureUnlockDialog(true, true);
this._hideLockScreen(false, 0);
},
_bumpLockScreen: function() {
Tweener.removeTweens(this._lockScreenGroup);
Tweener.addTween(this._lockScreenGroup,
{ y: -BUMP_SIZE,
time: BUMP_TIME / 2,
transition: 'easeOutQuad',
onComplete: function() {
Tweener.addTween(this,
{ y: 0,
time: BUMP_TIME / 2,
transition: 'easeInQuad' });
}
});
},
_hideLockScreen: function(animate, velocity) {
if (this._lockScreenState == MessageTray.State.HIDDEN)
return;
this._lockScreenState = MessageTray.State.HIDING;
if (animate) {
// Tween the lock screen out of screen
// if velocity is not specified (i.e. we come here from pressing ESC),
// use the same speed regardless of original position
// if velocity is specified, it's in pixels per milliseconds
let h = global.stage.height;
let delta = (h + this._lockScreenGroup.y);
let min_velocity = global.stage.height / (CURTAIN_SLIDE_TIME * 1000);
velocity = Math.max(min_velocity, velocity);
let time = (delta / velocity) / 1000;
Tweener.removeTweens(this._lockScreenGroup);
Tweener.addTween(this._lockScreenGroup,
{ y: -h,
time: time,
transition: 'easeInQuad',
onComplete: function() {
this._lockScreenState = MessageTray.State.HIDDEN;
this._lockScreenGroup.hide();
},
onCompleteScope: this,
});
} else {
this._lockScreenState = MessageTray.State.HIDDEN;
this._lockScreenGroup.hide();
}
global.stage.show_cursor();
if (Main.sessionMode.currentMode == 'lock-screen')
Main.sessionMode.popMode('lock-screen');
},
_ensureUnlockDialog: function(onPrimary, allowCancel) {
if (!this._dialog) {
let constructor = Main.sessionMode.unlockDialog;
if (!constructor) {
// This session mode has no locking capabilities
this.deactivate(true);
return;
}
this._dialog = new constructor(this._lockDialogGroup);
let time = global.get_current_time();
this._dialog.connect('loaded', Lang.bind(this, function() {
if (!this._dialog.open(time, onPrimary)) {
// This is kind of an impossible error: we're already modal
// by the time we reach this...
log('Could not open login dialog: failed to acquire grab');
this.deactivate(true);
}
}));
this._dialog.connect('failed', Lang.bind(this, this._onUnlockFailed));
this._dialog.connect('unlocked', Lang.bind(this, this._onUnlockSucceded));
}
this._dialog.allowCancel = allowCancel;
},
_onUnlockFailed: function() {
this._resetLockScreen(true, false);
},
_onUnlockSucceded: function() {
this.deactivate(true);
},
_resetLockScreen: function(animateLockScreen, animateLockDialog) {
// Don't reset the lock screen unless it is completely hidden
// This prevents the shield going down if the lock-delay timeout
// fires while the user is dragging (which has the potential
// to confuse our state)
if (this._lockScreenState != MessageTray.State.HIDDEN)
return;
this._ensureLockScreen();
this._lockDialogGroup.scale_x = 1;
this._lockDialogGroup.scale_y = 1;
this._lockScreenGroup.show();
this._lockScreenState = MessageTray.State.SHOWING;
if (animateLockScreen) {
this._lockScreenGroup.y = -global.screen_height;
Tweener.removeTweens(this._lockScreenGroup);
Tweener.addTween(this._lockScreenGroup,
{ y: 0,
time: SHORT_FADE_TIME,
transition: 'easeOutQuad',
onComplete: function() {
this._lockScreenShown();
},
onCompleteScope: this
});
} else {
this._lockScreenGroup.fixed_position_set = false;
this._lockScreenShown();
}
if (animateLockDialog) {
this._lockDialogGroup.opacity = 0;
Tweener.removeTweens(this._lockDialogGroup);
Tweener.addTween(this._lockDialogGroup,
{ opacity: 255,
time: SHORT_FADE_TIME,
transition: 'easeOutQuad' });
} else {
this._lockDialogGroup.opacity = 255;
}
this._lockScreenGroup.grab_key_focus();
if (Main.sessionMode.currentMode != 'lock-screen')
Main.sessionMode.pushMode('lock-screen');
},
_lockScreenShown: function() {
if (this._dialog && !this._isGreeter) {
this._dialog.destroy();
this._dialog = null;
}
if (this._arrowAnimationId)
Mainloop.source_remove(this._arrowAnimationId);
this._arrowAnimationId = Mainloop.timeout_add(6000, Lang.bind(this, this._animateArrows));
this._animateArrows();
let motionId = global.stage.connect('captured-event', function(stage, event) {
if (event.type() == Clutter.EventType.MOTION) {
global.stage.show_cursor();
global.stage.disconnect(motionId);
}
return false;
});
global.stage.hide_cursor();
this._lockScreenState = MessageTray.State.SHOWN;
this._lockScreenGroup.fixed_position_set = false;
this._lockScreenScrollCounter = 0;
let prevIsActive = this._isActive;
this._isActive = true;
if (prevIsActive != this._isActive)
this.emit('active-changed');
this._uninhibitSuspend();
this.emit('lock-screen-shown');
},
// Some of the actors in the lock screen are heavy in
// resources, so we only create them when needed
_ensureLockScreen: function() {
if (this._hasLockScreen)
return;
this._lockScreenContentsBox = new St.BoxLayout({ x_align: Clutter.ActorAlign.CENTER,
y_align: Clutter.ActorAlign.CENTER,
x_expand: true,
y_expand: true,
vertical: true,
style_class: 'screen-shield-contents-box' });
this._clock = new Clock();
this._lockScreenContentsBox.add(this._clock.actor, { x_fill: true,
y_fill: true });
this._lockScreenContents.add_actor(this._lockScreenContentsBox);
this._notificationsBox = new NotificationsBox();
this._lockScreenContentsBox.add(this._notificationsBox.actor, { x_fill: true,
y_fill: true,
expand: true });
this._hasLockScreen = true;
},
_clearLockScreen: function() {
this._clock.destroy();
this._clock = null;
if (this._notificationsBox) {
this._notificationsBox.destroy();
this._notificationsBox = null;
}
this._lockScreenContentsBox.destroy();
if (this._arrowAnimationId) {
Mainloop.source_remove(this._arrowAnimationId);
this._arrowAnimationId = 0;
}
this._hasLockScreen = false;
},
get locked() {
return this._isLocked;
},
get active() {
return this._isActive;
},
get activationTime() {
return this._activationTime;
},
deactivate: function(animate) {
this._hideLockScreen(animate, 0);
Tweener.addTween(this._lockDialogGroup, {
scale_x: 0,
scale_y: 0,
time: animate ? Overview.ANIMATION_TIME : 0,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, this._completeDeactivate),
onCompleteScope: this
});
},
_completeDeactivate: function() {
if (this._hasLockScreen)
this._clearLockScreen();
if (this._dialog && !this._isGreeter) {
this._dialog.destroy();
this._dialog = null;
}
this._lightbox.hide();
if (this._isModal) {
Main.popModal(this.actor);
this._isModal = false;
}
this.actor.hide();
if (Main.sessionMode.currentMode == 'lock-screen')
Main.sessionMode.popMode('lock-screen');
if (Main.sessionMode.currentMode == 'unlock-dialog')
Main.sessionMode.popMode('unlock-dialog');
if (this._becameActiveId != 0) {
this.idleMonitor.disconnect(this._becameActiveId);
this._becameActiveId = 0;
}
if (this._lockTimeoutId != 0) {
Mainloop.source_remove(this._lockTimeoutId);
this._lockTimeoutId = 0;
}
this._activationTime = 0;
this._isActive = false;
this._isLocked = false;
this.emit('active-changed');
this.emit('locked-changed');
},
activate: function(animate) {
if (this._activationTime == 0)
this._activationTime = GLib.get_monotonic_time();
this.actor.show();
if (Main.sessionMode.currentMode != 'unlock-dialog' &&
Main.sessionMode.currentMode != 'lock-screen') {
this._isGreeter = Main.sessionMode.isGreeter;
if (!this._isGreeter)
Main.sessionMode.pushMode('unlock-dialog');
}
this._resetLockScreen(animate, animate);
// We used to set isActive and emit active-changed here,
// but now we do that from lockScreenShown, which means
// there is a 0.3 seconds window during which the lock
// screen is effectively visible and the screen is locked, but
// the DBus interface reports the screensaver is off.
// This is because when we emit ActiveChanged(true),
// gnome-settings-daemon blanks the screen, and we don't want
// blank during the animation.
// This is not a problem for the idle fade case, because we
// activate without animation in that case.
},
lock: function(animate) {
if (!this._isModal) {
Main.pushModal(this.actor, { keybindingMode: Shell.KeyBindingMode.LOCK_SCREEN });
this._isModal = true;
}
this._isLocked = true;
this.activate(animate);
this.emit('locked-changed');
},
});
Signals.addSignalMethods(ScreenShield.prototype);
/* Fallback code to handle session locking using gnome-screensaver,
in case the required GDM dependency is not there
*/
const ScreenShieldFallback = new Lang.Class({
Name: 'ScreenShieldFallback',
_init: function() {
Util.spawn(['gnome-screensaver']);
this._proxy = new Gio.DBusProxy({ g_connection: Gio.DBus.session,
g_name: 'org.gnome.ScreenSaver',
g_object_path: '/org/gnome/ScreenSaver',
g_interface_name: 'org.gnome.ScreenSaver',
g_flags: (Gio.DBusProxyFlags.DO_NOT_AUTO_START |
Gio.DBusProxyFlags.DO_NOT_LOAD_PROPERTIES),
});
this._proxy.init(null);
this._proxy.connect('g-signal', Lang.bind(this, this._onSignal));
this._proxy.connect('notify::g-name-owner', Lang.bind(this, this._onNameOwnerChanged));
},
_onNameOwnerChanged: function(object, pspec) {
if (this._proxy.g_name_owner)
[this._locked] = this._proxy.call_sync('GetActive', null,
Gio.DBusCallFlags.NONE, -1, null).deep_unpack();
else
this._locked = false;
this.emit('active-changed', this._locked);
},
_onSignal: function(proxy, senderName, signalName, params) {
if (signalName == 'ActiveChanged') {
[this._locked] = params.deep_unpack();
this.emit('active-changed', this._locked);
}
},
get locked() {
return this._locked;
},
lock: function() {
this._proxy.call('Lock', null, Gio.DBusCallFlags.NONE, -1, null,
Lang.bind(this, function(proxy, result) {
proxy.call_finish(result);
this.emit('lock-screen-shown');
}));
},
unlock: function() {
this._proxy.call('SetActive', GLib.Variant.new('(b)', false),
Gio.DBusCallFlags.NONE, -1, null, null);
},
});
Signals.addSignalMethods(ScreenShieldFallback.prototype);
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