diff --git a/java/res/values-land/dimens.xml b/java/res/values-land/dimens.xml
index c46a517..496da3d 100644
--- a/java/res/values-land/dimens.xml
+++ b/java/res/values-land/dimens.xml
@@ -21,6 +21,7 @@
 <resources>
     <!-- keyboardHeight = key_height*4 + key_bottom_gap*3, key_height=0.260in -->
     <dimen name="keyboardHeight">1.100in</dimen>
+    <fraction name="minKeyboardHeight">45%p</fraction>
     <!-- key_height + key_bottom_gap = popup_key_height -->
 <!--    <dimen name="key_height">0.260in</dimen>-->
     <dimen name="key_bottom_gap">0.020in</dimen>
diff --git a/java/res/values/attrs.xml b/java/res/values/attrs.xml
index e88b007..7f2a400 100644
--- a/java/res/values/attrs.xml
+++ b/java/res/values/attrs.xml
@@ -80,6 +80,9 @@
         <attr name="keyboardHeight" format="dimension" />
         <!-- Maximum keyboard height, in pixels or percentage of display height -->
         <attr name="maxKeyboardHeight" format="dimension|fraction" />
+        <!-- Minimum keyboard height represented in pixels, percentage of display height if fraction
+             is positive, or percentage of display width if fraction is negative. -->
+        <attr name="minKeyboardHeight" format="dimension|fraction" />
         <!-- Default width of a key, in pixels or percentage of display width. -->
         <attr name="keyWidth" format="dimension|fraction" />
         <!-- Default height of a row (key height + vertical gap), in pixels or percentage of
diff --git a/java/res/values/dimens.xml b/java/res/values/dimens.xml
index 69f962f..82abf3b 100644
--- a/java/res/values/dimens.xml
+++ b/java/res/values/dimens.xml
@@ -21,6 +21,8 @@
 <resources>
     <!-- keyboardHeight = key_height*4 + key_bottom_gap*3, key_height=0.295in -->
     <dimen name="keyboardHeight">1.285in</dimen>
+    <fraction name="maxKeyboardHeight">50%p</fraction>
+    <fraction name="minKeyboardHeight">-61.8%p</fraction>
     <!-- key_height + key_bottom_gap = popup_key_height -->
     <!-- <dimen name="key_height">0.295in</dimen> -->
     <dimen name="key_bottom_gap">0.035in</dimen>
@@ -41,10 +43,11 @@
          to user's finger. -->
     <dimen name="keyboard_vertical_correction">-0.05in</dimen>
 
-    <dimen name="key_letter_size">0.13in</dimen>
-    <dimen name="key_label_text_size">0.083in</dimen>
+    <!-- TODO: use fraction for key letter size and etc. -->
+    <dimen name="key_letter_size">21dip</dimen>
+    <dimen name="key_label_text_size">13dip</dimen>
     <!-- left or right padding of label alignment -->
-    <dimen name="key_label_horizontal_alignment_padding">0.13in</dimen>
+    <dimen name="key_label_horizontal_alignment_padding">21dip</dimen>
     <dimen name="key_preview_height">80sp</dimen>
     <dimen name="key_preview_offset">0.000in</dimen>
     <dimen name="key_preview_text_size_large">36sp</dimen>
diff --git a/java/res/xml-ar/kbd_qwerty.xml b/java/res/xml-ar/kbd_qwerty.xml
index 5faf603..93310bf 100644
--- a/java/res/xml-ar/kbd_qwerty.xml
+++ b/java/res/xml-ar/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="10%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml-cs/kbd_qwerty.xml b/java/res/xml-cs/kbd_qwerty.xml
index 0e6e40d..a74f7fa 100644
--- a/java/res/xml-cs/kbd_qwerty.xml
+++ b/java/res/xml-cs/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="10%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml-da/kbd_qwerty.xml b/java/res/xml-da/kbd_qwerty.xml
index d9847ae..12ea33c 100644
--- a/java/res/xml-da/kbd_qwerty.xml
+++ b/java/res/xml-da/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
     latin:verticalGap="@dimen/key_bottom_gap"
diff --git a/java/res/xml-de/kbd_qwerty.xml b/java/res/xml-de/kbd_qwerty.xml
index e656966..6ad25b7 100644
--- a/java/res/xml-de/kbd_qwerty.xml
+++ b/java/res/xml-de/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="10%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml-fi/kbd_qwerty.xml b/java/res/xml-fi/kbd_qwerty.xml
index ea08d67..e35ab2b 100644
--- a/java/res/xml-fi/kbd_qwerty.xml
+++ b/java/res/xml-fi/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
     latin:verticalGap="@dimen/key_bottom_gap"
diff --git a/java/res/xml-fr-rCA/kbd_qwerty.xml b/java/res/xml-fr-rCA/kbd_qwerty.xml
index f9c2969..e649a1e 100644
--- a/java/res/xml-fr-rCA/kbd_qwerty.xml
+++ b/java/res/xml-fr-rCA/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="10%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml-fr-rCH/kbd_qwerty.xml b/java/res/xml-fr-rCH/kbd_qwerty.xml
index e47cfd9..f82becb 100644
--- a/java/res/xml-fr-rCH/kbd_qwerty.xml
+++ b/java/res/xml-fr-rCH/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="10%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml-fr/kbd_qwerty.xml b/java/res/xml-fr/kbd_qwerty.xml
index 2f8e67b..bda69e8 100644
--- a/java/res/xml-fr/kbd_qwerty.xml
+++ b/java/res/xml-fr/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="10%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml-hu/kbd_qwerty.xml b/java/res/xml-hu/kbd_qwerty.xml
index db729cf..952ad9a 100644
--- a/java/res/xml-hu/kbd_qwerty.xml
+++ b/java/res/xml-hu/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="10%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml-iw/kbd_qwerty.xml b/java/res/xml-iw/kbd_qwerty.xml
index 4cd565b..cfe404c 100644
--- a/java/res/xml-iw/kbd_qwerty.xml
+++ b/java/res/xml-iw/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="10%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml-nb/kbd_qwerty.xml b/java/res/xml-nb/kbd_qwerty.xml
index 7b20ca2..e7a743c 100644
--- a/java/res/xml-nb/kbd_qwerty.xml
+++ b/java/res/xml-nb/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
     latin:verticalGap="@dimen/key_bottom_gap"
diff --git a/java/res/xml-ru/kbd_qwerty.xml b/java/res/xml-ru/kbd_qwerty.xml
index e5aea58..0f5fdcd 100644
--- a/java/res/xml-ru/kbd_qwerty.xml
+++ b/java/res/xml-ru/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
     latin:verticalGap="@dimen/key_bottom_gap"
diff --git a/java/res/xml-sr/kbd_qwerty.xml b/java/res/xml-sr/kbd_qwerty.xml
index 9782cd5..6116c75 100644
--- a/java/res/xml-sr/kbd_qwerty.xml
+++ b/java/res/xml-sr/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
     latin:verticalGap="@dimen/key_bottom_gap"
diff --git a/java/res/xml-sv/kbd_qwerty.xml b/java/res/xml-sv/kbd_qwerty.xml
index 3ff1679..69f0b3f 100644
--- a/java/res/xml-sv/kbd_qwerty.xml
+++ b/java/res/xml-sv/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
     latin:verticalGap="@dimen/key_bottom_gap"
diff --git a/java/res/xml-xlarge/kbd_number.xml b/java/res/xml-xlarge/kbd_number.xml
index 012b751..7cb77ea 100644
--- a/java/res/xml-xlarge/kbd_number.xml
+++ b/java/res/xml-xlarge/kbd_number.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="11.949%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml-xlarge/kbd_phone.xml b/java/res/xml-xlarge/kbd_phone.xml
index 9122176..60edcf2 100644
--- a/java/res/xml-xlarge/kbd_phone.xml
+++ b/java/res/xml-xlarge/kbd_phone.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="11.949%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml-xlarge/kbd_phone_symbols.xml b/java/res/xml-xlarge/kbd_phone_symbols.xml
index 055c148..c388a46 100644
--- a/java/res/xml-xlarge/kbd_phone_symbols.xml
+++ b/java/res/xml-xlarge/kbd_phone_symbols.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="11.949%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml-xlarge/kbd_symbols.xml b/java/res/xml-xlarge/kbd_symbols.xml
index f1deae0..3b9a6b2 100644
--- a/java/res/xml-xlarge/kbd_symbols.xml
+++ b/java/res/xml-xlarge/kbd_symbols.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
     latin:verticalGap="@dimen/key_bottom_gap"
diff --git a/java/res/xml-xlarge/kbd_symbols_shift.xml b/java/res/xml-xlarge/kbd_symbols_shift.xml
index cc23358..d7f5958 100644
--- a/java/res/xml-xlarge/kbd_symbols_shift.xml
+++ b/java/res/xml-xlarge/kbd_symbols_shift.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
     latin:verticalGap="@dimen/key_bottom_gap"
diff --git a/java/res/xml/kbd_number.xml b/java/res/xml/kbd_number.xml
index 7bd679b..2556f68 100644
--- a/java/res/xml/kbd_number.xml
+++ b/java/res/xml/kbd_number.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="26.67%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml/kbd_phone.xml b/java/res/xml/kbd_phone.xml
index 62fbdee..ca591c7 100644
--- a/java/res/xml/kbd_phone.xml
+++ b/java/res/xml/kbd_phone.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="26.67%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml/kbd_phone_symbols.xml b/java/res/xml/kbd_phone_symbols.xml
index 67cd330..99db23e 100644
--- a/java/res/xml/kbd_phone_symbols.xml
+++ b/java/res/xml/kbd_phone_symbols.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="26.67%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml/kbd_qwerty.xml b/java/res/xml/kbd_qwerty.xml
index a4251c0..fd43740 100644
--- a/java/res/xml/kbd_qwerty.xml
+++ b/java/res/xml/kbd_qwerty.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="10%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml/kbd_symbols.xml b/java/res/xml/kbd_symbols.xml
index 9748bce..a1bd8c0 100644
--- a/java/res/xml/kbd_symbols.xml
+++ b/java/res/xml/kbd_symbols.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="10%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/res/xml/kbd_symbols_shift.xml b/java/res/xml/kbd_symbols_shift.xml
index 3978f17..cde0733 100644
--- a/java/res/xml/kbd_symbols_shift.xml
+++ b/java/res/xml/kbd_symbols_shift.xml
@@ -21,7 +21,8 @@
 <Keyboard
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
+    latin:maxKeyboardHeight="@fraction/maxKeyboardHeight"
+    latin:minKeyboardHeight="@fraction/minKeyboardHeight"
     latin:rowHeight="25%p"
     latin:keyWidth="10%p"
     latin:horizontalGap="@dimen/key_horizontal_gap"
diff --git a/java/src/com/android/inputmethod/keyboard/Key.java b/java/src/com/android/inputmethod/keyboard/Key.java
index 5c59d44..33b55b5 100644
--- a/java/src/com/android/inputmethod/keyboard/Key.java
+++ b/java/src/com/android/inputmethod/keyboard/Key.java
@@ -143,9 +143,9 @@
      * This constructor is being used only for key in mini popup keyboard.
      */
     public Key(Resources res, Keyboard keyboard, CharSequence popupCharacter, int x, int y,
-            int width, int edgeFlags) {
+            int width, int height, int edgeFlags) {
         mKeyboard = keyboard;
-        mHeight = keyboard.getRowHeight() - keyboard.getVerticalGap();
+        mHeight = height - keyboard.getVerticalGap();
         mGap = keyboard.getHorizontalGap();
         mVisualInsetsLeft = mVisualInsetsRight = 0;
         mWidth = width - mGap;
diff --git a/java/src/com/android/inputmethod/keyboard/KeyboardParser.java b/java/src/com/android/inputmethod/keyboard/KeyboardParser.java
index 69ae788..31fd0bf 100644
--- a/java/src/com/android/inputmethod/keyboard/KeyboardParser.java
+++ b/java/src/com/android/inputmethod/keyboard/KeyboardParser.java
@@ -196,9 +196,20 @@
             final int keyboardHeight = (int)keyboardAttr.getDimension(
                     R.styleable.Keyboard_keyboardHeight, displayHeight / 2);
             final int maxKeyboardHeight = getDimensionOrFraction(keyboardAttr,
-                    R.styleable.Keyboard_maxKeyboardHeight, displayHeight,  displayHeight / 2);
-            // Keyboard height will not exceed maxKeyboardHeight.
-            final int height = Math.min(keyboardHeight, maxKeyboardHeight);
+                    R.styleable.Keyboard_maxKeyboardHeight, displayHeight, displayHeight / 2);
+            int minKeyboardHeight = getDimensionOrFraction(keyboardAttr,
+                    R.styleable.Keyboard_minKeyboardHeight, displayHeight, displayHeight / 2);
+            if (minKeyboardHeight < 0) {
+                // Specified fraction was negative, so it should be calculated against display
+                // width.
+                final int displayWidth = keyboard.getDisplayWidth();
+                minKeyboardHeight = -getDimensionOrFraction(keyboardAttr,
+                        R.styleable.Keyboard_minKeyboardHeight, displayWidth, displayWidth / 2);
+            }
+            // Keyboard height will not exceed maxKeyboardHeight and will not be less than
+            // minKeyboardHeight.
+            final int height = Math.max(
+                    Math.min(keyboardHeight, maxKeyboardHeight), minKeyboardHeight);
             final int width = keyboard.getDisplayWidth();
 
             keyboard.setKeyboardHeight(height);
diff --git a/java/src/com/android/inputmethod/keyboard/KeyboardView.java b/java/src/com/android/inputmethod/keyboard/KeyboardView.java
index c551ed4..bbda400 100644
--- a/java/src/com/android/inputmethod/keyboard/KeyboardView.java
+++ b/java/src/com/android/inputmethod/keyboard/KeyboardView.java
@@ -1078,7 +1078,7 @@
         });
 
         final Keyboard keyboard = new MiniKeyboardBuilder(this, mKeyboard.getPopupKeyboardResId(),
-                parentKey).build();
+                parentKey, mKeyboard).build();
         miniKeyboardView.setKeyboard(keyboard);
 
         container.measure(MeasureSpec.makeMeasureSpec(getWidth(), MeasureSpec.AT_MOST),
diff --git a/java/src/com/android/inputmethod/keyboard/MiniKeyboardBuilder.java b/java/src/com/android/inputmethod/keyboard/MiniKeyboardBuilder.java
index e540fa1..2b83c3f 100644
--- a/java/src/com/android/inputmethod/keyboard/MiniKeyboardBuilder.java
+++ b/java/src/com/android/inputmethod/keyboard/MiniKeyboardBuilder.java
@@ -181,7 +181,8 @@
         }
     }
 
-    public MiniKeyboardBuilder(KeyboardView view, int layoutTemplateResId, Key parentKey) {
+    public MiniKeyboardBuilder(KeyboardView view, int layoutTemplateResId, Key parentKey,
+            Keyboard parentKeyboard) {
         final Context context = view.getContext();
         mRes = context.getResources();
         final MiniKeyboard keyboard = new MiniKeyboard(context, layoutTemplateResId, null);
@@ -191,12 +192,13 @@
         final int keyWidth = getMaxKeyWidth(view, mPopupCharacters, keyboard.getKeyWidth());
         final MiniKeyboardLayoutParams params = new MiniKeyboardLayoutParams(
                 mPopupCharacters.length, parentKey.mMaxPopupColumn,
-                keyWidth, keyboard.getRowHeight(),
+                keyWidth, parentKeyboard.getRowHeight(),
                 parentKey.mX + (parentKey.mWidth + parentKey.mGap) / 2 - keyWidth / 2,
                 view.getMeasuredWidth());
         mParams = params;
 
-        keyboard.setHeight(params.mNumRows * params.mRowHeight - keyboard.getVerticalGap());
+        keyboard.setRowHeight(params.mRowHeight);
+        keyboard.setHeight(params.mNumRows * params.mRowHeight);
         keyboard.setMinWidth(params.mNumColumns * params.mKeyWidth);
         keyboard.setDefaultCoordX(params.getDefaultKeyCoordX() + params.mKeyWidth / 2);
     }
@@ -235,7 +237,7 @@
             final CharSequence label = mPopupCharacters[n];
             final int row = n / params.mNumColumns;
             final Key key = new Key(mRes, keyboard, label, params.getX(n, row), params.getY(row),
-                    params.mKeyWidth, params.getRowFlags(row));
+                    params.mKeyWidth, params.mRowHeight, params.getRowFlags(row));
             keys.add(key);
         }
         return keyboard;