diff --git a/java/res/values/attrs.xml b/java/res/values/attrs.xml
index 5b38987..f8fb64c 100644
--- a/java/res/values/attrs.xml
+++ b/java/res/values/attrs.xml
@@ -173,18 +173,18 @@
         <attr name="themeId" format="integer" />
         <!-- Touch position correction -->
         <attr name="touchPositionCorrectionData" format="reference" />
-        <!-- Keyboard top, bottom, both horizontal edges paddings. -->
-        <attr name="keyboardTopPadding" format="dimension|fraction" />
-        <attr name="keyboardBottomPadding" format="dimension|fraction" />
-        <attr name="keyboardHorizontalEdgesPadding" format="dimension|fraction" />
-        <!-- Default height of a row (key height + vertical gap), in pixels or percentage of
+        <!-- Keyboard top, bottom edges paddings, in propotion of keyboard height. -->
+        <attr name="keyboardTopPadding" format="fraction" />
+        <attr name="keyboardBottomPadding" format="fraction" />
+        <!-- Keyboard both horizontal edges paddings, in propotion of keyboard width. -->
+        <attr name="keyboardHorizontalEdgesPadding" format="fraction" />
+        <!-- Default height of a row (key height + vertical gap), in pixels or in the proportion of
              keyboard height. -->
         <attr name="rowHeight" format="dimension|fraction" />
-        <!-- Default horizontal gap between keys, in pixels or percentage of keyboard width. -->
-        <attr name="horizontalGap" format="dimension|fraction" />
-        <!-- Default vertical gap between rows of keys, in pixels or percentage of keyboard
-             height. -->
-        <attr name="verticalGap" format="dimension|fraction" />
+        <!-- Default horizontal gap between keys, in the proportion of keyboard width. -->
+        <attr name="horizontalGap" format="fraction" />
+        <!-- Default vertical gap between rows of keys, in the proportion of keyboard height. -->
+        <attr name="verticalGap" format="fraction" />
         <!-- More keys keyboard layout template -->
         <attr name="moreKeysTemplate" format="reference" />
         <!-- Icon set for key top and key preview.
@@ -288,19 +288,20 @@
         <attr name="keyIconPreview" format="string" />
         <!-- The key style to specify a set of key attributes defined by <key_style/> -->
         <attr name="keyStyle" format="string" />
-        <!-- Visual insets -->
-        <attr name="visualInsetsLeft" format="dimension|fraction" />
-        <attr name="visualInsetsRight" format="dimension|fraction" />
-        <!-- Width of the key, in pixels or percentage of display width.
-             If the value is fillRight, the actual key width will be determined to fill out the area
-             up to the right edge of the keyboard. -->
+        <!-- Visual insets, in the proportion of keyboard width. -->
+        <attr name="visualInsetsLeft" format="fraction" />
+        <attr name="visualInsetsRight" format="fraction" />
+        <!-- Width of the key, in the proportion of keyboard width.
+             If the value is fillRight, the actual key width will be determined to fill out the
+             area up to the right edge of the keyboard. -->
         <!-- This should be aligned with KeyboardBuilder.Row.KEYWIDTH_* -->
-        <attr name="keyWidth" format="dimension|fraction|enum">
+        <attr name="keyWidth" format="fraction|enum">
             <enum name="fillRight" value="-1" />
         </attr>
-        <!-- The X-coordinate of upper right corner of this key including horizontal gap.
+        <!-- The X-coordinate of upper right corner of this key including horizontal gap, in the
+             proportion of keyboard width.
              If the value is negative, the origin is the right edge of the keyboard. -->
-        <attr name="keyXPos" format="dimension|fraction" />
+        <attr name="keyXPos" format="fraction" />
 
         <!-- Key top visual attributes -->
         <attr name="keyTypeface" format="enum">
diff --git a/java/res/values/styles.xml b/java/res/values/styles.xml
index 19d6da8..9dc09f1 100644
--- a/java/res/values/styles.xml
+++ b/java/res/values/styles.xml
@@ -119,9 +119,9 @@
         name="MoreKeysKeyboard"
         parent="Keyboard"
     >
-        <item name="keyboardTopPadding">0dp</item>
-        <item name="keyboardBottomPadding">0dp</item>
-        <item name="horizontalGap">0dp</item>
+        <item name="keyboardTopPadding">0%p</item>
+        <item name="keyboardBottomPadding">0%p</item>
+        <item name="horizontalGap">0%p</item>
         <item name="touchPositionCorrectionData">@null</item>
     </style>
     <style
@@ -224,9 +224,9 @@
         name="MoreKeysKeyboard.Stone"
         parent="Keyboard.Stone"
     >
-        <item name="keyboardTopPadding">0dp</item>
-        <item name="keyboardBottomPadding">0dp</item>
-        <item name="horizontalGap">0dp</item>
+        <item name="keyboardTopPadding">0%p</item>
+        <item name="keyboardBottomPadding">0%p</item>
+        <item name="horizontalGap">0%p</item>
         <item name="touchPositionCorrectionData">@null</item>
     </style>
     <style
@@ -294,9 +294,9 @@
         name="MoreKeysKeyboard.Gingerbread"
         parent="Keyboard.Gingerbread"
     >
-        <item name="keyboardTopPadding">0dp</item>
-        <item name="keyboardBottomPadding">0dp</item>
-        <item name="horizontalGap">0dp</item>
+        <item name="keyboardTopPadding">0%p</item>
+        <item name="keyboardBottomPadding">0%p</item>
+        <item name="horizontalGap">0%p</item>
         <item name="touchPositionCorrectionData">@null</item>
     </style>
     <style
@@ -353,9 +353,9 @@
         name="MoreKeysKeyboard.IceCreamSandwich"
         parent="Keyboard.IceCreamSandwich"
     >
-        <item name="keyboardTopPadding">0dp</item>
-        <item name="keyboardBottomPadding">0dp</item>
-        <item name="horizontalGap">0dp</item>
+        <item name="keyboardTopPadding">0%p</item>
+        <item name="keyboardBottomPadding">0%p</item>
+        <item name="horizontalGap">0%p</item>
         <item name="touchPositionCorrectionData">@null</item>
     </style>
     <style
diff --git a/java/src/com/android/inputmethod/keyboard/Key.java b/java/src/com/android/inputmethod/keyboard/Key.java
index 9b97175..e137b92 100644
--- a/java/src/com/android/inputmethod/keyboard/Key.java
+++ b/java/src/com/android/inputmethod/keyboard/Key.java
@@ -41,7 +41,6 @@
 import com.android.inputmethod.keyboard.internal.MoreKeySpec;
 import com.android.inputmethod.latin.Constants;
 import com.android.inputmethod.latin.R;
-import com.android.inputmethod.latin.ResourceUtils;
 import com.android.inputmethod.latin.StringUtils;
 
 import org.xmlpull.v1.XmlPullParser;
@@ -225,8 +224,8 @@
     public Key(final Resources res, final KeyboardParams params, final KeyboardRow row,
             final XmlPullParser parser) throws XmlPullParserException {
         final float horizontalGap = isSpacer() ? 0 : params.mHorizontalGap;
-        final int keyHeight = row.mRowHeight;
-        mHeight = keyHeight - params.mVerticalGap;
+        final int rowHeight = row.mRowHeight;
+        mHeight = rowHeight - params.mVerticalGap;
 
         final TypedArray keyAttr = res.obtainAttributes(Xml.asAttributeSet(parser),
                 R.styleable.Keyboard_Key);
@@ -241,17 +240,18 @@
         mY = keyYPos;
         mWidth = Math.round(keyWidth - horizontalGap);
         mHitBox.set(Math.round(keyXPos), keyYPos, Math.round(keyXPos + keyWidth) + 1,
-                keyYPos + keyHeight);
+                keyYPos + rowHeight);
         // Update row to have current x coordinate.
         row.setXPos(keyXPos + keyWidth);
 
         mBackgroundType = style.getInt(keyAttr,
                 R.styleable.Keyboard_Key_backgroundType, row.getDefaultBackgroundType());
 
-        final int visualInsetsLeft = Math.round(ResourceUtils.getDimensionOrFraction(keyAttr,
-                R.styleable.Keyboard_Key_visualInsetsLeft, params.mBaseWidth, 0));
-        final int visualInsetsRight = Math.round(ResourceUtils.getDimensionOrFraction(keyAttr,
-                R.styleable.Keyboard_Key_visualInsetsRight, params.mBaseWidth, 0));
+        final int baseWidth = params.mBaseWidth;
+        final int visualInsetsLeft = Math.round(keyAttr.getFraction(
+                R.styleable.Keyboard_Key_visualInsetsLeft, baseWidth, baseWidth, 0));
+        final int visualInsetsRight = Math.round(keyAttr.getFraction(
+                R.styleable.Keyboard_Key_visualInsetsRight, baseWidth, baseWidth, 0));
         mIconId = KeySpecParser.getIconId(style.getString(keyAttr,
                 R.styleable.Keyboard_Key_keyIcon));
         final int disabledIconId = KeySpecParser.getIconId(style.getString(keyAttr,
diff --git a/java/src/com/android/inputmethod/keyboard/Keyboard.java b/java/src/com/android/inputmethod/keyboard/Keyboard.java
index c2036fc..e87ecbc 100644
--- a/java/src/com/android/inputmethod/keyboard/Keyboard.java
+++ b/java/src/com/android/inputmethod/keyboard/Keyboard.java
@@ -30,11 +30,11 @@
  * <p>The layout file for a keyboard contains XML that looks like the following snippet:</p>
  * <pre>
  * &lt;Keyboard
- *         latin:keyWidth="%10p"
- *         latin:keyHeight="50px"
- *         latin:horizontalGap="2px"
- *         latin:verticalGap="2px" &gt;
- *     &lt;Row latin:keyWidth="32px" &gt;
+ *         latin:keyWidth="10%p"
+ *         latin:rowHeight="50px"
+ *         latin:horizontalGap="2%p"
+ *         latin:verticalGap="2%p" &gt;
+ *     &lt;Row latin:keyWidth="10%p" &gt;
  *         &lt;Key latin:keyLabel="A" /&gt;
  *         ...
  *     &lt;/Row&gt;
diff --git a/java/src/com/android/inputmethod/keyboard/internal/KeyboardBuilder.java b/java/src/com/android/inputmethod/keyboard/internal/KeyboardBuilder.java
index 802d926..20edf65 100644
--- a/java/src/com/android/inputmethod/keyboard/internal/KeyboardBuilder.java
+++ b/java/src/com/android/inputmethod/keyboard/internal/KeyboardBuilder.java
@@ -235,31 +235,36 @@
                 R.styleable.Keyboard_Key);
         try {
             final KeyboardParams params = mParams;
-            params.mOccupiedHeight = params.mId.mHeight;
-            params.mOccupiedWidth = params.mId.mWidth;
-            params.mTopPadding = (int)ResourceUtils.getDimensionOrFraction(keyboardAttr,
-                    R.styleable.Keyboard_keyboardTopPadding, params.mOccupiedHeight, 0);
-            params.mBottomPadding = (int)ResourceUtils.getDimensionOrFraction(keyboardAttr,
-                    R.styleable.Keyboard_keyboardBottomPadding, params.mOccupiedHeight, 0);
-            params.mHorizontalEdgesPadding = (int)ResourceUtils.getDimensionOrFraction(
-                    keyboardAttr,
-                    R.styleable.Keyboard_keyboardHorizontalEdgesPadding,
-                    mParams.mOccupiedWidth, 0);
+            final int height = params.mId.mHeight;
+            final int width = params.mId.mWidth;
+            params.mOccupiedHeight = height;
+            params.mOccupiedWidth = width;
+            params.mTopPadding = (int)keyboardAttr.getFraction(
+                    R.styleable.Keyboard_keyboardTopPadding, height, height, 0);
+            params.mBottomPadding = (int)keyboardAttr.getFraction(
+                    R.styleable.Keyboard_keyboardBottomPadding, height, height, 0);
+            // TODO: Split keyboardHorizontalEdgesPadding into two, keyboardLeftPaddings and
+            // keyboardRightPaddings.
+            params.mHorizontalEdgesPadding = (int)keyboardAttr.getFraction(
+                    R.styleable.Keyboard_keyboardHorizontalEdgesPadding, width, width, 0);
 
-            params.mBaseWidth = params.mOccupiedWidth - params.mHorizontalEdgesPadding * 2
+            final int baseWidth = params.mOccupiedWidth - params.mHorizontalEdgesPadding * 2
                     - params.mHorizontalCenterPadding;
-            params.mDefaultKeyWidth = (int)ResourceUtils.getDimensionOrFraction(keyAttr,
-                    R.styleable.Keyboard_Key_keyWidth, params.mBaseWidth,
-                    params.mBaseWidth / DEFAULT_KEYBOARD_COLUMNS);
-            params.mHorizontalGap = (int)ResourceUtils.getDimensionOrFraction(keyboardAttr,
-                    R.styleable.Keyboard_horizontalGap, params.mBaseWidth, 0);
-            params.mVerticalGap = (int)ResourceUtils.getDimensionOrFraction(keyboardAttr,
-                    R.styleable.Keyboard_verticalGap, params.mOccupiedHeight, 0);
-            params.mBaseHeight = params.mOccupiedHeight - params.mTopPadding
+            params.mBaseWidth = baseWidth;
+            params.mDefaultKeyWidth = (int)keyAttr.getFraction(R.styleable.Keyboard_Key_keyWidth,
+                    baseWidth, baseWidth, baseWidth / DEFAULT_KEYBOARD_COLUMNS);
+            params.mHorizontalGap = (int)keyboardAttr.getFraction(
+                    R.styleable.Keyboard_horizontalGap, baseWidth, baseWidth, 0);
+            // TODO: Fix keyboard geometry calculation clearer. Historically vertical gap between
+            // rows are determined based on the entire keyboard height including top and bottom
+            // paddings.
+            params.mVerticalGap = (int)keyboardAttr.getFraction(
+                    R.styleable.Keyboard_verticalGap, height, height, 0);
+            final int baseHeight = params.mOccupiedHeight - params.mTopPadding
                     - params.mBottomPadding + params.mVerticalGap;
+            params.mBaseHeight = baseHeight;
             params.mDefaultRowHeight = (int)ResourceUtils.getDimensionOrFraction(keyboardAttr,
-                    R.styleable.Keyboard_rowHeight, params.mBaseHeight,
-                    params.mBaseHeight / DEFAULT_KEYBOARD_ROWS);
+                    R.styleable.Keyboard_rowHeight, baseHeight, baseHeight / DEFAULT_KEYBOARD_ROWS);
 
             params.mKeyVisualAttributes = KeyVisualAttributes.newInstance(keyAttr);
 
diff --git a/java/src/com/android/inputmethod/keyboard/internal/KeyboardRow.java b/java/src/com/android/inputmethod/keyboard/internal/KeyboardRow.java
index 2278020..e2256fa 100644
--- a/java/src/com/android/inputmethod/keyboard/internal/KeyboardRow.java
+++ b/java/src/com/android/inputmethod/keyboard/internal/KeyboardRow.java
@@ -54,17 +54,16 @@
     public KeyboardRow(final Resources res, final KeyboardParams params, final XmlPullParser parser,
             final int y) {
         mParams = params;
-        TypedArray keyboardAttr = res.obtainAttributes(Xml.asAttributeSet(parser),
+        final TypedArray keyboardAttr = res.obtainAttributes(Xml.asAttributeSet(parser),
                 R.styleable.Keyboard);
         mRowHeight = (int)ResourceUtils.getDimensionOrFraction(keyboardAttr,
                 R.styleable.Keyboard_rowHeight,
                 params.mBaseHeight, params.mDefaultRowHeight);
         keyboardAttr.recycle();
-        TypedArray keyAttr = res.obtainAttributes(Xml.asAttributeSet(parser),
+        final TypedArray keyAttr = res.obtainAttributes(Xml.asAttributeSet(parser),
                 R.styleable.Keyboard_Key);
-        mDefaultKeyWidth = ResourceUtils.getDimensionOrFraction(keyAttr,
-                R.styleable.Keyboard_Key_keyWidth,
-                params.mBaseWidth, params.mDefaultKeyWidth);
+        mDefaultKeyWidth = keyAttr.getFraction(R.styleable.Keyboard_Key_keyWidth,
+                params.mBaseWidth, params.mBaseWidth, params.mDefaultKeyWidth);
         mDefaultBackgroundType = keyAttr.getInt(R.styleable.Keyboard_Key_backgroundType,
                 Key.BACKGROUND_TYPE_NORMAL);
         keyAttr.recycle();
@@ -115,8 +114,8 @@
         final int keyboardRightEdge = mParams.mOccupiedWidth
                 - mParams.mHorizontalEdgesPadding;
         if (keyAttr.hasValue(R.styleable.Keyboard_Key_keyXPos)) {
-            final float keyXPos = ResourceUtils.getDimensionOrFraction(keyAttr,
-                    R.styleable.Keyboard_Key_keyXPos, mParams.mBaseWidth, 0);
+            final float keyXPos = keyAttr.getFraction(R.styleable.Keyboard_Key_keyXPos,
+                    mParams.mBaseWidth, mParams.mBaseWidth, 0);
             if (keyXPos < 0) {
                 // If keyXPos is negative, the actual x-coordinate will be
                 // keyboardWidth + keyXPos.
@@ -146,9 +145,8 @@
             // out the area up to the right edge of the keyboard.
             return keyboardRightEdge - keyXPos;
         default: // KEYWIDTH_NOT_ENUM
-            return ResourceUtils.getDimensionOrFraction(keyAttr,
-                    R.styleable.Keyboard_Key_keyWidth,
-                    mParams.mBaseWidth, mDefaultKeyWidth);
+            return keyAttr.getFraction(R.styleable.Keyboard_Key_keyWidth,
+                    mParams.mBaseWidth, mParams.mBaseWidth, mDefaultKeyWidth);
         }
     }
 }