Aligns the Q A Z keys on the a11y keyboard.

ui/keyboard/resources/main.js

 // Copyright 2013 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.
 (function(exports) {
   /**
    * Alignment options for a keyset.
    * @param {Object=} opt_keyset The keyset to calculate the dimensions for.
    *    Defaults to the current active keyset.
    */
   var AlignmentOptions = function(opt_keyset) {
@@ skipping 290 matching lines @@
    * @param {number} width The total extraneous width to distribute.
    * @param {number} keyHeight The height of each key.
    * @param {number} yOffset The y-coordinate of the top edge of the row.
    */
   function redistribute(allKeys, pitch, xOffset, width, keyHeight, yOffset) {
     var weight = 0;
     for (var i = 0; i < allKeys.length; i++) {
       weight += allKeys[i].weight;
     }
     var availableWidth = width - (allKeys.length - 1) * pitch;
-    var pixelsPerWeight = width / weight;
+    var pixelsPerWeight = availableWidth / weight;
     for (var i = 0; i < allKeys.length; i++) {
       var keyWidth = Math.floor(allKeys[i].weight * pixelsPerWeight);
       if (i == allKeys.length -1) {
         keyWidth =  availableWidth;
       }
       updateKey(allKeys[i], keyWidth, keyHeight, xOffset, yOffset)
       availableWidth -= keyWidth;
       xOffset += keyWidth + pitch;
     }
   }
@@ skipping 126 matching lines @@
           // All left-over pixels assigned to right most key.
           if (i == (stretch.length - 1))
             stretch[i].setAttribute('bonus', bonus + extra);
           else
             stretch[i].setAttribute('bonus', bonus);
         }
         break;
       case RowAlignment.CENTER:
         xOffset += Math.floor(extra/2)
         break;
-      case RowAlignment.JUSTIFY:
+      case RowAlignment.RIGHT:
         xOffset += extra;
         break;
+      case RowAlignment.STRETCHRIGHT:
+        all[all.length-1].setAttribute('bonus', extra);

[kevers, 2014/01/31 20:11:00]

See comment below on "bonus".

[rsadam, 2014/01/31 20:40:18]

Done.

       default:
         break;
     };
 
     var yOffset = params.offsetTop + heightOffset;
     var left = xOffset;
     for (var i = 0; i < all.length; i++) {
       var key = all[i];
       var width = params.keyWidth;
-      if (key.weight != DEFAULT_KEY_WEIGHT_X) {
+      if (key.weight != DEFAULT_KEY_WEIGHT_X)
         width = Math.floor((params.keyWidth/DEFAULT_KEY_WEIGHT_X) * key.weight)
-        var bonus = key.getAttribute('bonus')
-        if (bonus)
-          width += parseInt(bonus)
-      }
+      var bonus = key.getAttribute('bonus')

[kevers, 2014/01/31 20:11:00]

"bonus" is too generic. Also, we should be taking temporary variables and
assigning as attributes on the keys.  This new attribute will persist until
removed.  Instead, use an array or a map to tabular the data until needed.

[rsadam, 2014/01/31 20:40:18]

Done.

+      if (bonus)
+        width += parseInt(bonus)
       updateKey(key, width, params.keyHeight, left, yOffset)
       left += (width + params.pitchX);
     }
   }
 
   /**
    * Realigns the keysets in all layouts of the keyboard.
    */
   function realignAll() {
     var keyboard = $('keyboard');
@@ skipping 32 matching lines @@
     keyboard.stale = false;
   }
 
   /*
    * Realigns a given keyset.
    * @param {Object} keyset The keyset to realign.
    * @param {!AlignmentOptions} params The parameters used to align the keyset.
    */
   function realignKeyset(keyset, params) {
     var rows = keyset.querySelectorAll('kb-row').array();
+    var maxSize = getKeyboardBounds();
+    var height =  (maxSize.width > ASPECT_RATIO * maxSize.height) ?
+      maxSize.height : Math.floor(maxSize.width / ASPECT_RATIO);
+    keyset.style.fontSize = (height / FONT_SIZE_RATIO / rows.length) + 'px';
+
     var heightOffset  = 0;
     for (var i = 0; i < rows.length; i++) {
       var row = rows[i];
       if (row.querySelector('.space') && (i > 1)) {
         realignSpacebarRow(row, rows[i-1], params, heightOffset)
       } else {
         realignRow(row, params, heightOffset);
       }
       heightOffset += (params.keyHeight + params.pitchY);
     }
@@ skipping 49 matching lines @@
   var importedContent = importHTML(content);
   expandHTML(importedContent);
   return importedContent;
 }
 
 // Prevents all default actions of touch. Keyboard should use its own gesture
 // recognizer.
 addEventListener('touchstart', function(e) { e.preventDefault() });
 addEventListener('touchend', function(e) { e.preventDefault() });
 addEventListener('touchmove', function(e) { e.preventDefault() });