Add implementations for saveLayerAlpha() and textured rects.

Even though there's an implementation for textured rects, drawBitmap() is not
hooked up yet as it will require a good texture cache.

This method is implemented using FBOs. There's currently an issue either in the
driver or in the Canvas renderer that forces the FBO to be fullscreen, which is
extremely expensive and yields terrible performance.

Change-Id: I148419195e12d45653c60186938aa78c23a68e2c

1 files changed, 47 insertions, 5 deletions

diff --git a/tests/HwAccelerationTest/src/com/google/android/test/hwui/HwUiActivity.java b/tests/HwAccelerationTest/src/com/google/android/test/hwui/HwUiActivity.java
index 14154a8..85e3997 100644
--- a/tests/HwAccelerationTest/src/com/google/android/test/hwui/HwUiActivity.java
+++ b/tests/HwAccelerationTest/src/com/google/android/test/hwui/HwUiActivity.java
@@ -22,7 +22,11 @@ import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.os.Bundle;
 import android.util.Log;
+import android.view.Gravity;
 import android.view.View;
+import android.view.animation.AlphaAnimation;
+import android.view.animation.Animation;
+import android.widget.FrameLayout;
 
 @SuppressWarnings({"UnusedDeclaration"})
 public class HwUiActivity extends Activity {
@@ -32,7 +36,19 @@ public class HwUiActivity extends Activity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        setContentView(new DirtyBitmapView(this));
+        DirtyBitmapView container = new DirtyBitmapView(this);
+
+        ColorView color = new ColorView(this);
+        container.addView(color, new DirtyBitmapView.LayoutParams(
+                dipToPx(this, 100), dipToPx(this, 100), Gravity.CENTER));
+
+        AlphaAnimation a = new AlphaAnimation(1.0f, 0.0f);
+        a.setDuration(2000);
+        a.setRepeatCount(Animation.INFINITE);
+        a.setRepeatMode(Animation.REVERSE);
+        color.startAnimation(a);
+
+        setContentView(container);
     }
     
     @SuppressWarnings({"UnusedDeclaration"})
@@ -40,7 +56,19 @@ public class HwUiActivity extends Activity {
         return (int) (c.getResources().getDisplayMetrics().density * dip + 0.5f);
     }
 
-    static class DirtyBitmapView extends View {
+    static class ColorView extends View {
+        ColorView(Context c) {
+            super(c);
+        }
+
+        @Override
+        protected void onDraw(Canvas canvas) {
+            super.onDraw(canvas);
+            canvas.drawRGB(0, 255, 0);
+        }
+    }
+
+    static class DirtyBitmapView extends FrameLayout {
         private final Paint mPaint;
 
         DirtyBitmapView(Context c) {
@@ -49,9 +77,7 @@ public class HwUiActivity extends Activity {
         }
 
         @Override
-        protected void onDraw(Canvas canvas) {
-            super.onDraw(canvas);
-
+        public void dispatchDraw(Canvas canvas) {
             canvas.drawRGB(255, 255, 255);
 
             mPaint.setColor(0xffff0000);
@@ -86,6 +112,7 @@ public class HwUiActivity extends Activity {
                     Canvas.EdgeType.BW));
             canvas.restore();
 
+            canvas.save();
             canvas.scale(2.0f, 2.0f);            
             canvas.clipRect(20.0f, 0.0f, 40.0f, 20.0f);
 
@@ -94,6 +121,21 @@ public class HwUiActivity extends Activity {
             
             mPaint.setColor(0xff0000ff);
             canvas.drawRect(20.0f, 0.0f, 40.0f, 20.0f, mPaint);
+            
+            canvas.restore();
+
+            final int restoreTo = canvas.save();
+            canvas.saveLayerAlpha(0.0f, 100.0f, getWidth(), 150.0f, 127,
+                    Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.CLIP_TO_LAYER_SAVE_FLAG);
+            mPaint.setColor(0xff0000ff);
+            canvas.drawRect(0.0f, 100.0f, 40.0f, 150.0f, mPaint);
+            mPaint.setColor(0xff00ffff);
+            canvas.drawRect(40.0f, 100.0f, 140.0f, 150.0f, mPaint);
+            mPaint.setColor(0xffff00ff);
+            canvas.drawRect(140.0f, 100.0f, 240.0f, 150.0f, mPaint);
+            canvas.restoreToCount(restoreTo);
+
+            super.dispatchDraw(canvas);
         }
     }
 }