Put DessertCase on a diet.

- store desserts as ALPHA_8, saving 75% of bitmap memory
- run DessertCase in its own process, avoiding bloating
  systemui every time the daydream or platlogo activity run
- lock orientation in DessertCase to stop thrashing around
  when the device is rotated

Bug: 10918599
Change-Id: Ia2fb0696b903ae355c75b53d3a0c45b70784d00c

2 files changed, 24 insertions, 7 deletions

diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index 260a3be..09ac2da 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -200,7 +200,8 @@
             android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
             android:hardwareAccelerated="true"
             android:launchMode="singleInstance"
-            android:configChanges="orientation|screenSize"
+            android:screenOrientation="locked"
+            android:process=":sweetsweetdesserts"
             android:excludeFromRecents="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -215,6 +216,7 @@
             android:exported="true"
             android:label="@string/dessert_case"
             android:enabled="false"
+            android:process=":sweetsweetdesserts"
             >
             <intent-filter>
                 <action android:name="android.service.dreams.DreamService" />
diff --git a/packages/SystemUI/src/com/android/systemui/DessertCaseView.java b/packages/SystemUI/src/com/android/systemui/DessertCaseView.java
index 99c59d5..90de65e 100644
--- a/packages/SystemUI/src/com/android/systemui/DessertCaseView.java
+++ b/packages/SystemUI/src/com/android/systemui/DessertCaseView.java
@@ -96,6 +96,13 @@ public class DessertCaseView extends FrameLayout {
             1f,  0f,  0f,  0f, 0f
     };
 
+    private static final float[] ALPHA_MASK = {
+            0f,  0f,  0f,  0f, 255f,
+            0f,  0f,  0f,  0f, 255f,
+            0f,  0f,  0f,  0f, 255f,
+            0f,  0f,  0f,  1f, 0f
+    };
+
     private static final float[] WHITE_MASK = {
             0f,  0f,  0f,  0f, 255f,
             0f,  0f,  0f,  0f, 255f,
@@ -162,8 +169,8 @@ public class DessertCaseView extends FrameLayout {
         for (int[] list : new int[][] { PASTRIES, RARE_PASTRIES, XRARE_PASTRIES, XXRARE_PASTRIES }) {
             for (int resid : list) {
                 final BitmapDrawable d = new BitmapDrawable(res,
-                        BitmapFactory.decodeResource(res, resid, opts));
-                d.setColorFilter(new ColorMatrixColorFilter(MASK));
+                        convertToAlphaMask(BitmapFactory.decodeResource(res, resid, opts)));
+                d.setColorFilter(new ColorMatrixColorFilter(ALPHA_MASK));
                 d.setBounds(0, 0, mCellSize, mCellSize);
                 mDrawables.append(resid, d);
             }
@@ -171,6 +178,15 @@ public class DessertCaseView extends FrameLayout {
         if (DEBUG) setWillNotDraw(false);
     }
 
+    private static Bitmap convertToAlphaMask(Bitmap b) {
+        Bitmap a = Bitmap.createBitmap(b.getWidth(), b.getHeight(), Bitmap.Config.ALPHA_8);
+        Canvas c = new Canvas(a);
+        Paint pt = new Paint();
+        pt.setColorFilter(new ColorMatrixColorFilter(MASK));
+        c.drawBitmap(b, 0.0f, 0.0f, pt);
+        return a;
+    }
+
     public void start() {
         if (!mStarted) {
             mStarted = true;
@@ -273,9 +289,9 @@ public class DessertCaseView extends FrameLayout {
 
             final float which = frand();
             final Drawable d;
-            if (which < 0.001f) {
+            if (which < 0.0005f) {
                 d = mDrawables.get(pick(XXRARE_PASTRIES));
-            } else if (which < 0.01f) {
+            } else if (which < 0.005f) {
                 d = mDrawables.get(pick(XRARE_PASTRIES));
             } else if (which < 0.5f) {
                 d = mDrawables.get(pick(RARE_PASTRIES));
@@ -288,8 +304,7 @@ public class DessertCaseView extends FrameLayout {
                 v.getOverlay().add(d);
             }
 
-            final Paint paint = new Paint();
-            v.setLayerType(View.LAYER_TYPE_HARDWARE, paint);
+            v.setLayerType(View.LAYER_TYPE_HARDWARE, null);
 
             lp.width = lp.height = mCellSize;
             addView(v, lp);