gnome-shell/js/ui/screenShield.js
Giovanni Campagna 271508c0a8 ScreenShield: fix code to detect missing unlock dialog
If the session mode has no locking support, screenshield had code to
unlock automatically, but it did so by checking the return value of
the constructor, instead of checking if the constructor was actually
callable, so it would get a TypeError before reaching the check.

https://bugzilla.gnome.org/show_bug.cgi?id=687708
2012-11-11 19:17:58 +01:00

1006 lines
36 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 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 + ') * 2.0);\n'
}
const GLSL_BLUR_EFFECT_DECLARATIONS = ' \
uniform vec2 pixel_step;\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( 0.0, 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, const float desaturation)\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, 0.6);\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);
},
});
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));
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);
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);
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);
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);
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);
} 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);
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();
let shouldLock = lightboxWasShown && this._settings.get_boolean(LOCK_ENABLED_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);
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) {
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));
}
},
_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);
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);