Improve layout for bookmark-apps. Add a treatment for small icons.

chrome/browser/resources/ntp4/apps_page.js

 // Copyright (c) 2011 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.
 
 cr.define('ntp4', function() {
   'use strict';
 
   var localStrings = new LocalStrings;
 
   var APP_LAUNCH = {
@@ skipping 160 matching lines @@
 
   App.prototype = {
     __proto__: HTMLDivElement.prototype,
 
     initialize: function() {
       assert(this.appData_.id, 'Got an app without an ID');
       this.id = this.appData_.id;
 
       this.className = 'app';
 
+      if (!this.appData_.icon_big_exists && this.appData_.icon_small_exists)
+        this.useSmallIcon_ = true;
+
       var appImg = this.ownerDocument.createElement('img');
-      appImg.src = this.appData_.icon_big;
-      // We use a mask of the same image so CSS rules can highlight just the
-      // image when it's touched.
-      appImg.style.WebkitMaskImage = url(this.appData_.icon_big);
+      appImg.src = this.useSmallIcon_ ? this.appData_.icon_small :
+                                        this.appData_.icon_big;
       // We put a click handler just on the app image - so clicking on the
       // margins between apps doesn't do anything.
       appImg.addEventListener('click', this.onClick_.bind(this));
-      this.appendChild(appImg);
+      if (this.useSmallIcon_) {
+        var imgDiv = this.ownerDocument.createElement('div');
+        imgDiv.setAttribute('class', 'app-icon-div');
+        imgDiv.appendChild(appImg);
+        imgDiv.addEventListener('click', this.onClick_.bind(this));
+        this.imgDiv_ = imgDiv;
+        this.appendChild(imgDiv);
+      } else {
+        this.appendChild(appImg);
+      }
       this.appImg_ = appImg;
 
       var appSpan = this.ownerDocument.createElement('span');
       appSpan.textContent = this.appData_.name;
       this.appendChild(appSpan);
 
       this.addEventListener('contextmenu', cr.ui.contextMenuHandler);
       this.addEventListener('keydown', cr.ui.contextMenuHandler);
       this.addEventListener('keyup', cr.ui.contextMenuHandler);
     },
 
     /**
      * Set the size and position of the app tile.
      * @param {number} size The total size of |this|.
      * @param {number} x The x-position.
      * @param {number} y The y-position.
      *     animate.
      */
     setBounds: function(size, x, y) {
-      this.appImg_.style.width = this.appImg_.style.height =
-          (size * APP_IMG_SIZE_FRACTION) + 'px';
+      if (this.useSmallIcon_) {
+        this.imgDiv_.style.width = (size * APP_IMG_SIZE_FRACTION) + 'px';
+        this.imgDiv_.style.height = (size * APP_IMG_SIZE_FRACTION - 4) + 'px';
+        this.appImg_.style.width = this.appImg_.style.height = '32px';
+        var margin = (size - (size * APP_IMG_SIZE_FRACTION)) / 2;
+        this.imgDiv_.style['margin-left'] = margin + 'px';
+        this.imgDiv_.style['margin-right'] = margin + 'px';
+        this.imgDiv_.style['margin-bottom'] = '4px';
+      }
+      else {
+        this.appImg_.style.width = this.appImg_.style.height =
+            (size * APP_IMG_SIZE_FRACTION) + 'px';
+      }
+
       this.style.width = this.style.height = size + 'px';
 
       this.style.left = x + 'px';
       this.style.right = x + 'px';
       this.style.top = y + 'px';
     },
 
     /**
      * Invoked when an app is clicked
      * @param {Event} e The click event.
@@ skipping 146 matching lines @@
       }
 
       chrome.send('reorderApps', [draggedTile.firstChild.appId, appIds]);
     },
   };
 
   return {
     AppsPage: AppsPage,
   };
 });