Merge "Properly center and scale the navkey glow." into jb-dev

Author: dsandler

packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonView.java

@@ -52,6 +52,7 @@ public class KeyButtonView extends ImageView {
     int mCode;
     int mTouchSlop;
     Drawable mGlowBG;
+    int mGlowWidth, mGlowHeight;
     float mGlowAlpha = 0f, mGlowScale = 1f, mDrawingAlpha = 1f;
     boolean mSupportsLongpress = true;
     RectF mRect = new RectF(0f,0f,0f,0f);
@@ -89,6 +90,8 @@ public KeyButtonView(Context context, AttributeSet attrs, int defStyle) {
         mGlowBG = a.getDrawable(R.styleable.KeyButtonView_glowBackground);
         if (mGlowBG != null) {
             setDrawingAlpha(BUTTON_QUIESCENT_ALPHA);
+            mGlowWidth = mGlowBG.getIntrinsicWidth();
+            mGlowHeight = mGlowBG.getIntrinsicHeight();
         }
 
         a.recycle();
@@ -103,8 +106,12 @@ protected void onDraw(Canvas canvas) {
             canvas.save();
             final int w = getWidth();
             final int h = getHeight();
+            final float aspect = (float)mGlowWidth / mGlowHeight;
+            final int drawW = (int)(h*aspect);
+            final int drawH = h;
+            final int margin = (drawW-w)/2;
             canvas.scale(mGlowScale, mGlowScale, w*0.5f, h*0.5f);
-            mGlowBG.setBounds(0, 0, w, h);
+            mGlowBG.setBounds(-margin, 0, drawW-margin, drawH);
             mGlowBG.setAlpha((int)(mDrawingAlpha * mGlowAlpha * 255));
             mGlowBG.draw(canvas);
             canvas.restore();