gnome-shell/js/ui/screenShield.js
Giovanni Campagna d525d02348 ScreenShield: honor lock-delay GSettings key
org.gnome.desktop.screensaver.lock-delay contains the grace period
of the screensaver: if deactivated within that many seconds from the
start of the idle period, the shell should not prompt for a password.
This setting correspond to the "Lock screen after" combo in screen
and privacy panels.

https://bugzilla.gnome.org/show_bug.cgi?id=690766
2012-12-27 19:05:44 +01:00

1022 lines
37 KiB
JavaScript

// -*- 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 Signals = imports.signals;
const St = imports.gi.St;
const TweenerEquations = imports.tweener.equations;
const GnomeSession = imports.misc.gnomeSession;
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._residentNotificationBox = new St.BoxLayout({ vertical: true,
style_class: 'screen-shield-notifications-box' });
let scrollView = new St.ScrollView({ x_fill: false, x_align: St.Align.START });
this._persistentNotificationBox = new St.BoxLayout({ vertical: true,
style_class: 'screen-shield-notifications-box' });
scrollView.add_actor(this._persistentNotificationBox);
this.actor.add(this._residentNotificationBox, { x_fill: true });
this.actor.add(scrollView, { x_fill: true, x_align: St.Align.START });
this._items = [];
Main.messageTray.getSummaryItems().forEach(Lang.bind(this, function(item) {
this._summaryItemAdded(Main.messageTray, item, true);
}));
this._updateVisibility();
this._summaryAddedId = Main.messageTray.connect('summary-item-added', Lang.bind(this, this._summaryItemAdded));
},
destroy: function() {
if (this._summaryAddedId) {
Main.messageTray.disconnect(this._summaryAddedId);
this._summaryAddedId = 0;
}
for (let i = 0; i < this._items.length; i++)
this._removeItem(this._items[i]);
this._items = [];
this.actor.destroy();
},
_updateVisibility: function() {
this._residentNotificationBox.visible = this._residentNotificationBox.get_n_children() > 0;
this._persistentNotificationBox.visible = this._persistentNotificationBox.get_children().some(function(a) {
return a.visible;
});
this.actor.visible = this._residentNotificationBox.visible || this._persistentNotificationBox.visible;
},
_sourceIsResident: function(source) {
return source.hasResidentNotification() && !source.isChat;
},
_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) {
let box = new St.BoxLayout({ style_class: 'screen-shield-notification-source' });
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 label = new St.Label({ text: source.title,
style_class: 'screen-shield-notification-label' });
textBox.add(label);
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 [box, countLabel];
},
_summaryItemAdded: function(tray, item, dontUpdateVisibility) {
// Ignore transient sources, or sources explicitly marked not to show
// in the lock screen
if (item.source.isTransient || !item.source.showInLockScreen)
return;
let obj = {
item: item,
source: item.source,
resident: this._sourceIsResident(item.source),
contentUpdatedId: 0,
sourceDestroyId: 0,
sourceBox: null,
countLabel: null,
};
if (obj.resident) {
this._residentNotificationBox.add(item.notificationStackWidget);
item.closeButton.hide();
item.prepareNotificationStackForShowing();
} else {
[obj.sourceBox, obj.countLabel] = this._makeNotificationSource(item.source);
this._persistentNotificationBox.add(obj.sourceBox, { x_fill: false, x_align: St.Align.START });
}
obj.contentUpdatedId = item.connect('content-updated', Lang.bind(this, this._onItemContentUpdated));
obj.sourceCountChangedId = item.source.connect('count-updated', Lang.bind(this, this._onSourceChanged));
obj.sourceTitleChangedId = item.source.connect('title-changed', Lang.bind(this, this._onSourceChanged));
obj.sourceDestroyId = item.source.connect('destroy', Lang.bind(this, this._onSourceDestroy));
this._items.push(obj);
if (!dontUpdateVisibility)
this._updateVisibility();
},
_findSource: function(source) {
for (let i = 0; i < this._items.length; i++) {
if (this._items[i].source == source)
return i;
}
return -1;
},
_onItemContentUpdated: function(item) {
let obj = this._items[this._findSource(item.source)];
this._updateItem(obj);
},
_onSourceChanged: function(source) {
let obj = this._items[this._findSource(source)];
this._updateItem(obj);
},
_updateItem: function(obj) {
let itemShouldBeResident = this._sourceIsResident(obj.source);
if (itemShouldBeResident && obj.resident) {
// Nothing to do here, the actor is already updated
return;
}
if (obj.resident && !itemShouldBeResident) {
// make into a regular item
obj.item.doneShowingNotificationStack();
this._residentNotificationBox.remove_actor(obj.item.notificationStackWidget);
[obj.sourceBox, obj.countLabel] = this._makeNotificationSource(obj.source);
this._persistentNotificationBox.add(obj.sourceBox, { x_fill: false, x_align: St.Align.START });
} else if (itemShouldBeResident && !obj.resident) {
// make into a resident item
obj.sourceBox.destroy();
obj.sourceBox = obj.countLabel = null;
obj.resident = true;
this._residentNotificationBox.add(obj.item.notificationStackWidget);
obj.item.closeButton.hide();
obj.item.prepareNotificationStackForShowing();
} else {
// just update the counter
let count = obj.source.unseenCount;
obj.countLabel.text = this._makeNotificationCountText(count, obj.source.isChat);
obj.sourceBox.visible = count != 0;
}
this._updateVisibility();
},
_onSourceDestroy: function(source) {
let idx = this._findSource(source);
this._removeItem(this._items[idx]);
this._items.splice(idx, 1);
this._updateVisibility();
},
_removeItem: function(obj) {
if (obj.resident) {
obj.item.doneShowingNotificationStack();
this._residentNotificationBox.remove_actor(obj.item.notificationStackWidget);
} else {
obj.sourceBox.destroy();
}
obj.item.disconnect(obj.contentUpdatedId);
obj.source.disconnect(obj.sourceDestroyId);
obj.source.disconnect(obj.sourceCountChangedId);
obj.source.disconnect(obj.sourceTitleChangedId);
},
});
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',
});
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._loginManager = LoginManager.getLoginManager();
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.unlock(); }));
this._settings = new Gio.Settings({ schema: SCREENSAVER_SCHEMA });
this._isModal = false;
this._hasLockScreen = false;
this._isGreeter = false;
this._isActive = false;
this._inUnlockAnimation = false;
this._activationTime = 0;
this._lightbox = new Lightbox.Lightbox(Main.uiGroup,
{ inhibitEvents: true,
fadeInTime: STANDARD_FADE_TIME,
fadeFactor: 1 });
this.idleMonitor = new GnomeDesktop.IdleMonitor();
},
_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._ensureUnlockDialog(true, true);
this._hideLockScreen(true, 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._ensureUnlockDialog(false, true);
this._hideLockScreen(true, 0);
}
return true;
},
_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;
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._hideLockScreen(true, -velocityY);
this._ensureUnlockDialog(false, true);
} 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: Main.KeybindingMode.LOCK_SCREEN });
this._isModal = true;
}
if (!this._isActive) {
this._lightbox.show();
if (this._activationTime == 0)
this._activationTime = GLib.get_monotonic_time();
this._becameActiveId = this.idleMonitor.connect('became-active', Lang.bind(this, function() {
this.idleMonitor.disconnect(this._becameActiveId);
let lightboxWasShown = this._lightbox.shown;
this._lightbox.hide();
// GLib.get_monotonic_time() returns microseconds, convert to seconds
let elapsedTime = (GLib.get_monotonic_time() - this._activationTime) / 1000000;
let shouldLock = lightboxWasShown &&
this._settings.get_boolean(LOCK_ENABLED_KEY) &&
(elapsedTime >= this._settings.get_boolean(LOCK_DELAY_KEY));
if (shouldLock || this._isLocked) {
this.lock(false);
} else if (this._isActive) {
this.unlock();
}
}));
this._isActive = true;
this.emit('lock-status-changed');
}
},
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._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) {
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.unlock();
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)) {
log('Could not open login dialog: failed to acquire grab');
this.unlock();
}
}));
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._tweenUnlocked();
},
_resetLockScreen: function(animateLockScreen, animateLockDialog) {
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;
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);
if (this._settings.get_boolean('show-notifications')) {
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._isActive;
},
get activationTime() {
return this._activationTime;
},
_tweenUnlocked: function() {
this._inUnlockAnimation = true;
this.unlock();
Tweener.addTween(this._lockDialogGroup, {
scale_x: 0,
scale_y: 0,
time: Overview.ANIMATION_TIME,
transition: 'easeOutQuad',
onComplete: function() {
if (this._dialog) {
this._dialog.destroy();
this._dialog = null;
}
this.actor.hide();
this._inUnlockAnimation = false;
},
onCompleteScope: this
});
},
unlock: 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;
}
if (!this._inUnlockAnimation)
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');
this._activationTime = 0;
this._isActive = false;
this._isLocked = false;
this.emit('lock-status-changed');
},
lock: function(animate) {
if (!this._isModal) {
Main.pushModal(this.actor, { keybindingMode: Main.KeybindingMode.LOCK_SCREEN });
this._isModal = true;
}
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);
this._isActive = true;
this._isLocked = true;
this.emit('lock-status-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('lock-status-changed', this._locked);
},
_onSignal: function(proxy, senderName, signalName, params) {
if (signalName == 'ActiveChanged') {
[this._locked] = params.deep_unpack();
this.emit('lock-status-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);