[gnome-shell/gbsneto/new-lock-screen-part2: 8/32] screenShield: Move background to Unlock Dialog

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 2e23962911807175d706de6280c0d25427d2fbb2
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Thu Nov 28 19:16:55 2019 -0300

    screenShield: Move background to Unlock Dialog
    
    In addition to that, remove the ClutterBoxLayout that is set as
    the layout manager of the Unlock Dialog, and apply the primary
    monitor constraint to the child St.BoxLayout instead.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/872

 js/ui/screenShield.js | 47 ---------------------------------------------
 js/ui/unlockDialog.js | 53 +++++++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 51 insertions(+), 49 deletions(-)
---
diff --git a/js/ui/screenShield.js b/js/ui/screenShield.js
index 514d503d1d..d422efed09 100644
--- a/js/ui/screenShield.js
+++ b/js/ui/screenShield.js
@@ -4,7 +4,6 @@ const { AccountsService, Clutter, Gio,
         GLib, Graphene, Meta, Shell, St } = imports.gi;
 const Signals = imports.signals;
 
-const Background = imports.ui.background;
 const GnomeSession = imports.misc.gnomeSession;
 const Layout = imports.ui.layout;
 const OVirt = imports.gdm.oVirt;
@@ -27,9 +26,6 @@ const DISABLE_LOCK_KEY = 'disable-lock-screen';
 
 const LOCKED_STATE_STR = 'screenShield.locked';
 
-const BLUR_BRIGHTNESS = 0.55;
-const BLUR_RADIUS = 200;
-
 // fraction of screen height the arrow must reach before completing
 // the slide up automatically
 var ARROW_DRAG_THRESHOLD = 0.1;
@@ -80,15 +76,6 @@ var ScreenShield = class {
 
         this._lockScreenGroup.add_actor(this._lockScreenContents);
 
-        this._backgroundGroup = new Clutter.Actor();
-
-        this._lockScreenGroup.add_actor(this._backgroundGroup);
-        this._lockScreenGroup.set_child_below_sibling(this._backgroundGroup, null);
-        this._bgManagers = [];
-
-        this._updateBackgrounds();
-        Main.layoutManager.connect('monitors-changed', this._updateBackgrounds.bind(this));
-
         this._dragAction = new Clutter.GestureAction();
         this._dragAction.connect('gesture-begin', this._onDragBegin.bind(this));
         this._dragAction.connect('gesture-progress', this._onDragMotion.bind(this));
@@ -194,40 +181,6 @@ var ScreenShield = class {
         this._syncInhibitor();
     }
 
-    _createBackground(monitorIndex) {
-        let monitor = Main.layoutManager.monitors[monitorIndex];
-        let widget = new St.Widget({ style_class: 'screen-shield-background',
-                                     x: monitor.x,
-                                     y: monitor.y,
-                                     width: monitor.width,
-                                     height: monitor.height });
-
-        let bgManager = new Background.BackgroundManager({ container: widget,
-                                                           monitorIndex,
-                                                           controlPosition: false,
-                                                           settingsSchema: SCREENSAVER_SCHEMA });
-
-        this._bgManagers.push(bgManager);
-
-        this._backgroundGroup.add_child(widget);
-
-        widget.add_effect(new Shell.BlurEffect({
-            brightness: BLUR_BRIGHTNESS,
-            blur_radius: BLUR_RADIUS,
-        }));
-    }
-
-    _updateBackgrounds() {
-        for (let i = 0; i < this._bgManagers.length; i++)
-            this._bgManagers[i].destroy();
-
-        this._bgManagers = [];
-        this._backgroundGroup.destroy_all_children();
-
-        for (let i = 0; i < Main.layoutManager.monitors.length; i++)
-            this._createBackground(i);
-    }
-
     _liftShield(velocity) {
         if (this._isLocked) {
             if (this._ensureUnlockDialog(true /* allowCancel */))
diff --git a/js/ui/unlockDialog.js b/js/ui/unlockDialog.js
index 82a31bd905..607766175f 100644
--- a/js/ui/unlockDialog.js
+++ b/js/ui/unlockDialog.js
@@ -4,6 +4,7 @@
 const { AccountsService, Atk, Clutter, Gdm, Gio,
         GnomeDesktop, GLib, GObject, Meta, Shell, St } = imports.gi;
 
+const Background = imports.ui.background;
 const Layout = imports.ui.layout;
 const Main = imports.ui.main;
 const MessageTray = imports.ui.messageTray;
@@ -13,6 +14,11 @@ const AuthPrompt = imports.gdm.authPrompt;
 // The timeout before going back automatically to the lock screen (in seconds)
 const IDLE_TIMEOUT = 2 * 60;
 
+const SCREENSAVER_SCHEMA = 'org.gnome.desktop.screensaver';
+
+const BLUR_BRIGHTNESS = 0.55;
+const BLUR_RADIUS = 200;
+
 const SUMMARY_ICON_SIZE = 48;
 
 var NotificationsBox = GObject.registerClass({
@@ -323,13 +329,21 @@ var UnlockDialog = GObject.registerClass({
         super._init({
             accessible_role: Atk.Role.WINDOW,
             style_class: 'login-dialog',
-            layout_manager: new Clutter.BoxLayout(),
             visible: false,
         });
 
-        this.add_constraint(new Layout.MonitorConstraint({ primary: true }));
         parentActor.add_child(this);
 
+        // Background
+        this._backgroundGroup = new Clutter.Actor();
+
+        this.add_child(this._backgroundGroup);
+        this.set_child_below_sibling(this._backgroundGroup, null);
+        this._bgManagers = [];
+
+        this._updateBackgrounds();
+        Main.layoutManager.connect('monitors-changed', this._updateBackgrounds.bind(this));
+
         this._userManager = AccountsService.UserManager.get_default();
         this._userName = GLib.get_user_name();
         this._user = this._userManager.get_user(this._userName);
@@ -340,6 +354,7 @@ var UnlockDialog = GObject.registerClass({
                                              x_expand: true,
                                              y_expand: true });
         this.add_child(this._promptBox);
+        this._promptBox.add_constraint(new Layout.MonitorConstraint({ primary: true }));
 
         this._clock = new Clock();
         this._promptBox.add_child(this._clock);
@@ -386,6 +401,40 @@ var UnlockDialog = GObject.registerClass({
         this.connect('destroy', this._onDestroy.bind(this));
     }
 
+    _createBackground(monitorIndex) {
+        let monitor = Main.layoutManager.monitors[monitorIndex];
+        let widget = new St.Widget({ style_class: 'screen-shield-background',
+                                     x: monitor.x,
+                                     y: monitor.y,
+                                     width: monitor.width,
+                                     height: monitor.height });
+
+        let bgManager = new Background.BackgroundManager({ container: widget,
+                                                           monitorIndex,
+                                                           controlPosition: false,
+                                                           settingsSchema: SCREENSAVER_SCHEMA });
+
+        this._bgManagers.push(bgManager);
+
+        this._backgroundGroup.add_child(widget);
+
+        widget.add_effect(new Shell.BlurEffect({
+            brightness: BLUR_BRIGHTNESS,
+            blur_radius: BLUR_RADIUS,
+        }));
+    }
+
+    _updateBackgrounds() {
+        for (let i = 0; i < this._bgManagers.length; i++)
+            this._bgManagers[i].destroy();
+
+        this._bgManagers = [];
+        this._backgroundGroup.destroy_all_children();
+
+        for (let i = 0; i < Main.layoutManager.monitors.length; i++)
+            this._createBackground(i);
+    }
+
     _updateSensitivity(sensitive) {
         this._authPrompt.updateSensitivity(sensitive);