Cleanup key drawing code

This change also modifies 9-patch drawables to fix the following
issues.  In order to draw key background drawable just on the
coordinates we want, we have to know where an actual "visible" part is
in the drawable.  The only clue we can use is "padding" of the
drawable.  To achieve this, the 9-patch drawable must have its
"visible" part marked as "content".  Please refer the Bug: 4948171 for
more detailed explanation.

This change also reverts the following "black" drawables back from
Gingerbread because recent change broke these (I70019a91).
  * drawable-hdpi/sym_bkeyboard_*.png
  * drawable-hdpi/btn_keyboard_key_*_stone.9.png

Bug: 4948171
Change-Id: I6e4d03b3144caa95c793aac97af22df34c5f454f

1 files changed, 12 insertions, 3 deletions

diff --git a/java/src/com/android/inputmethod/keyboard/Keyboard.java b/java/src/com/android/inputmethod/keyboard/Keyboard.java
index 20327c5b2..280c0c9d8 100644
--- a/java/src/com/android/inputmethod/keyboard/Keyboard.java
+++ b/java/src/com/android/inputmethod/keyboard/Keyboard.java
@@ -19,6 +19,7 @@ package com.android.inputmethod.keyboard;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.drawable.Drawable;
+import android.text.TextUtils;
 import android.util.Log;
 
 import com.android.inputmethod.keyboard.internal.KeyboardIconsSet;
@@ -345,15 +346,23 @@ public class Keyboard {
     }
 
     public boolean isAlphaKeyboard() {
-        return mId != null && mId.isAlphabetKeyboard();
+        return mId.isAlphabetKeyboard();
     }
 
     public boolean isPhoneKeyboard() {
-        return mId != null && mId.isPhoneKeyboard();
+        return mId.isPhoneKeyboard();
     }
 
     public boolean isNumberKeyboard() {
-        return mId != null && mId.isNumberKeyboard();
+        return mId.isNumberKeyboard();
+    }
+
+    public CharSequence adjustLabelCase(CharSequence label) {
+        if (isShiftedOrShiftLocked() && !TextUtils.isEmpty(label) && label.length() < 3
+                && Character.isLowerCase(label.charAt(0))) {
+            return label.toString().toUpperCase(mId.mLocale);
+        }
+        return label;
     }
 
     // TODO: Move this function to ProximityInfo and make this private.