Make the buttons work for edge pixels of the keyboard

Follow-up change to If7630b89

bug: 3142416
Change-Id: I2660e3d688eb0490363e460d5b4944c89b8ca35c

java/src/com/android/inputmethod/latin/LatinKeyboard.java

@@ -797,7 +797,9 @@ public class LatinKeyboard extends Keyboard {
         if (mCurrentlyInSpace) {
             return new int[] { mSpaceKeyIndex };
         } else {
-            return super.getNearestKeys(x, y);
+            // Avoid dead pixels at edges of the keyboard
+            return super.getNearestKeys(Math.max(0, Math.min(x, getMinWidth() - 1)),
+                    Math.max(0, Math.min(y, getHeight() - 1)));
         }
     }
 

java/src/com/android/inputmethod/latin/ProximityKeyDetector.java

@@ -83,4 +83,4 @@ class ProximityKeyDetector extends KeyDetector {
         }
         return primaryIndex;
     }
-}
+}