Merge "Localized optimizations in views and bitmaps" into ics-mr1

Author: Christopher Tate

core/java/android/widget/EdgeEffect.java

@@ -129,7 +129,7 @@ public EdgeEffect(Context context) {
         mEdge = res.getDrawable(R.drawable.overscroll_edge);
         mGlow = res.getDrawable(R.drawable.overscroll_glow);
 
-        mMinWidth = (int) (context.getResources().getDisplayMetrics().density * MIN_WIDTH + 0.5f);
+        mMinWidth = (int) (res.getDisplayMetrics().density * MIN_WIDTH + 0.5f);
         mInterpolator = new DecelerateInterpolator();
     }
 

core/java/android/widget/TextView.java

@@ -24,6 +24,7 @@
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.res.ColorStateList;
+import android.content.res.CompatibilityInfo;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.content.res.XmlResourceParser;
@@ -449,18 +450,19 @@ public TextView(Context context,
         super(context, attrs, defStyle);
         mText = "";
 
+        final Resources res = getResources();
+        final CompatibilityInfo compat = res.getCompatibilityInfo();
+
         mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
-        mTextPaint.density = getResources().getDisplayMetrics().density;
-        mTextPaint.setCompatibilityScaling(
-                getResources().getCompatibilityInfo().applicationScale);
+        mTextPaint.density = res.getDisplayMetrics().density;
+        mTextPaint.setCompatibilityScaling(compat.applicationScale);
 
         // If we get the paint from the skin, we should set it to left, since
         // the layout always wants it to be left.
         // mTextPaint.setTextAlign(Paint.Align.LEFT);
 
         mHighlightPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
-        mHighlightPaint.setCompatibilityScaling(
-                getResources().getCompatibilityInfo().applicationScale);
+        mHighlightPaint.setCompatibilityScaling(compat.applicationScale);
 
         mMovement = getDefaultMovementMethod();
         mTransformation = null;

graphics/java/android/graphics/Bitmap.java

@@ -604,10 +604,13 @@ private static Bitmap createBitmap(int width, int height, Config config, boolean
         }
         Bitmap bm = nativeCreate(null, 0, width, width, height, config.nativeInt, true);
         if (config == Config.ARGB_8888 && !hasAlpha) {
-            bm.eraseColor(0xff000000);
+            nativeErase(bm.mNativeBitmap, 0xff000000);
             nativeSetHasAlpha(bm.mNativeBitmap, hasAlpha);
         } else {
-            bm.eraseColor(0);
+            // No need to initialize it to zeroes; it is backed by a VM byte array
+            // which is by definition preinitialized to all zeroes.
+            //
+            //nativeErase(bm.mNativeBitmap, 0);
         }
         return bm;
     }