VrShell background implemented in JS.

chrome/browser/resources/vr_shell/vr_shell_ui.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var vrShellUi = (function() {
   'use strict';
 
   let ui = new scene.Scene();
   let uiManager;
 
@@ skipping 18 matching lines @@
     constructor() {
       /** @const */ this.SCREEN_HEIGHT = 1.6;
       /** @const */ this.SCREEN_RATIO = 16 / 9;
       /** @const */ this.BROWSING_SCREEN_DISTANCE = 2.0;
       /** @const */ this.FULLSCREEN_DISTANCE = 3.0;
       /** @const */ this.CSS_WIDTH_PIXELS = 960.0;
       /** @const */ this.CSS_HEIGHT_PIXELS = 640.0;
       /** @const */ this.DPR = 1.2;
 
       let element = new api.UiElement(0, 0, 0, 0);
-      element.setIsContentQuad();
+      element.setFill(new api.Content());
       element.setVisible(false);
       element.setSize(
           this.SCREEN_HEIGHT * this.SCREEN_RATIO, this.SCREEN_HEIGHT);
       element.setTranslation(0, 0, -this.BROWSING_SCREEN_DISTANCE);
       this.elementId = ui.addElement(element);
     }
 
     setEnabled(enabled) {
       let update = new api.UiElementUpdate();
       update.setVisible(enabled);
@@ skipping 426 matching lines @@
         return;
       }
       this.nativeState.visible = visible;
       let update = new api.UiElementUpdate();
       update.setVisible(visible);
       ui.updateElement(this.domUiElement.uiElementId, update);
       ui.flush();
     }
   };
 
+  class Background {
+    constructor() {
+      /** @const */ var GRADIENT_LIGHER_GRAY =
+          {r: 0.57, g: 0.57, b: 0.57, a: 1.0};
+      /** @const */ var GRADIENT_DARKER_GRAY =
+          {r: 0.48, g: 0.48, b: 0.48, a: 1.0};
+      /** @const */ var SCENE_GROUND_SIZE = 25.0;
+      /** @const */ var SCENE_HEIGHT = 4.0;
+      /** @const */ var GRIDLINE_COUNT = 10;
+
+      // Make ground plane.
+      let groundPlane = new api.UiElementUpdate();
+      groundPlane.setVisible(true);
+      groundPlane.setSize(SCENE_GROUND_SIZE, SCENE_GROUND_SIZE);
+      groundPlane.setFill(
+          new api.OpaqueGradient(GRADIENT_LIGHER_GRAY, GRADIENT_DARKER_GRAY));
+      groundPlane.setTranslation(0, -SCENE_HEIGHT / 2, 0);
+      groundPlane.setRotation(1.0, 0.0, 0.0, -Math.PI / 2);
+      this.groundPlaneId = ui.addElement(groundPlane);
+
+      // Make ceiling plane.
+      let ceilingPlane = new api.UiElementUpdate();
+      ceilingPlane.setVisible(true);
+      ceilingPlane.setSize(SCENE_GROUND_SIZE, SCENE_GROUND_SIZE);
+      ceilingPlane.setFill(
+          new api.OpaqueGradient(GRADIENT_LIGHER_GRAY, GRADIENT_DARKER_GRAY));
+      ceilingPlane.setTranslation(0, SCENE_HEIGHT / 2, 0);
+      ceilingPlane.setRotation(1.0, 0.0, 0.0, Math.PI / 2);
+      this.ceilingPlaneId = ui.addElement(ceilingPlane);
+
+      // Ground grid.
+      let groundGrid = new api.UiElementUpdate();
+      groundGrid.setVisible(true);
+      groundGrid.setSize(SCENE_GROUND_SIZE, SCENE_GROUND_SIZE);
+      groundGrid.setFill(new api.GridGradient(
+          GRADIENT_LIGHER_GRAY, GRADIENT_LIGHER_GRAY, GRIDLINE_COUNT));
+      groundGrid.setTranslation(0, -SCENE_HEIGHT / 2 + 0.01, 0);
+      groundGrid.setRotation(1.0, 0.0, 0.0, -Math.PI / 2);
+      this.groundGridId = ui.addElement(groundGrid);
+    }
+
+    setEnabled(enabled) {
+      let groundPlaneUpdate = new api.UiElementUpdate();
+      groundPlaneUpdate.setVisible(enabled);
+      ui.updateElement(this.groundPlaneId, groundPlaneUpdate);
+      let ceilingPlaneUpdate = new api.UiElementUpdate();
+      ceilingPlaneUpdate.setVisible(enabled);
+      ui.updateElement(this.ceilingPlaneId, ceilingPlaneUpdate);
+      let groundGridUpdate = new api.UiElementUpdate();
+      groundGridUpdate.setVisible(enabled);
+      ui.updateElement(this.groundGridId, groundGridUpdate);
+    }
+  };
+
   class Omnibox {
     constructor() {
       this.enabled = false;
 
       this.domUiElement = new DomUiElement('#omnibox-ui-element');
       let root = this.domUiElement.domElement;
       this.inputField = root.querySelector('#omnibox-input-field');
 
       // Initially invisible.
       let update = new api.UiElementUpdate();
@@ skipping 60 matching lines @@
       }
     }
   };
 
   class UiManager {
     constructor() {
       this.mode = api.Mode.UNKNOWN;
       this.menuMode = false;
       this.fullscreen = false;
 
+      this.background = new Background();
       this.contentQuad = new ContentQuad();
       let contentId = this.contentQuad.getElementId();
 
       this.controls = new Controls(contentId);
       this.secureOriginWarnings = new SecureOriginWarnings();
       this.urlIndicator = new UrlIndicator();
       this.omnibox = new Omnibox();
       this.reloadUiButton = new ReloadUiButton();
     }
 
@@ skipping 21 matching lines @@
       // TODO(crbug/643815): Set aspect ratio on content quad when available.
       this.controls.setEnabled(menuMode);
       this.omnibox.setEnabled(menuMode);
       this.urlIndicator.setEnabled(mode == api.Mode.STANDARD && !menuMode);
       this.urlIndicator.setVisibilityTimeout(
           URL_INDICATOR_VISIBILITY_TIMEOUT_MS);
       this.secureOriginWarnings.setEnabled(
           mode == api.Mode.WEB_VR && !menuMode);
 
       this.reloadUiButton.setEnabled(mode == api.Mode.STANDARD);
+      this.background.setEnabled(mode == api.Mode.STANDARD && !menuMode);
 
       api.setUiCssSize(
           uiRootElement.clientWidth, uiRootElement.clientHeight, UI_DPR);
     }
 
     setSecurityLevel(level) {
       this.urlIndicator.setSecurityLevel(level);
     }
 
     setWebVRSecureOrigin(secure) {
@@ skipping 50 matching lines @@
     ui.flush();
   }
 
   return {
     initialize: initialize,
     command: command,
   };
 })();
 
 window.addEventListener('load', vrShellUi.initialize);