Allow layers with a stencil buffer to be resized on the fly

Bug #7146141

This change moves the resizeLayer() from LayerCache (where it should
never have been anyway) to Layer. This makes a little more sense.

Change-Id: I8b2f9c19c558e738405a58b9e71ec5799fc6be88

1 files changed, 57 insertions, 8 deletions

diff --git a/tests/HwAccelerationTest/src/com/android/test/hwui/ViewLayersActivity5.java b/tests/HwAccelerationTest/src/com/android/test/hwui/ViewLayersActivity5.java
index 2664977..cbbb7ef 100644
--- a/tests/HwAccelerationTest/src/com/android/test/hwui/ViewLayersActivity5.java
+++ b/tests/HwAccelerationTest/src/com/android/test/hwui/ViewLayersActivity5.java
@@ -19,14 +19,18 @@ package com.android.test.hwui;
 import android.app.Activity;
 import android.content.Context;
 import android.content.res.Resources;
+import android.graphics.Canvas;
 import android.graphics.Paint;
+import android.graphics.Path;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffColorFilter;
 import android.os.Bundle;
+import android.util.AttributeSet;
 import android.util.DisplayMetrics;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
+import android.widget.FrameLayout;
 import android.widget.ListView;
 import android.widget.TextView;
 
@@ -37,30 +41,75 @@ public class ViewLayersActivity5 extends Activity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        
+
+        init();
+
         setContentView(R.layout.view_layers_5);
+        setupList(R.id.list1);
+    }
+
+    public static class ClipFrameLayout extends FrameLayout {
+        private final Path mClipPath = new Path();
+        private boolean mClipEnabled;
+
+        public ClipFrameLayout(Context context, AttributeSet attrs) {
+            super(context, attrs);
+        }
+
+        public ClipFrameLayout(Context context, AttributeSet attrs, int defStyle) {
+            super(context, attrs, defStyle);
+        }
+
+        public boolean isClipEnabled() {
+            return mClipEnabled;
+        }
 
+        public void setClipEnabled(boolean clipEnabled) {
+            mClipEnabled = clipEnabled;
+            invalidate();
+        }
+
+        @Override
+        protected void dispatchDraw(Canvas canvas) {
+            if (mClipEnabled) {
+                mClipPath.reset();
+                mClipPath.addCircle(getWidth() / 2.0f, getHeight() / 2.0f,
+                        Math.min(getWidth(), getHeight()) / 3.0f, Path.Direction.CW);
+
+                canvas.clipPath(mClipPath);
+            }
+            super.dispatchDraw(canvas);
+        }
+    }
+
+    private void init() {
         mPaint.setColorFilter(new PorterDuffColorFilter(0xff00ff00, PorterDuff.Mode.MULTIPLY));
+    }
 
-        setupList(R.id.list1);
+    public void enableClip(View v) {
+        ((ClipFrameLayout) findViewById(R.id.container)).setClipEnabled(true);
+    }
+
+    public void disableClip(View v) {
+        ((ClipFrameLayout) findViewById(R.id.container)).setClipEnabled(false);
     }
 
     public void enableLayer(View v) {
-        findViewById(R.id.list1).setLayerType(View.LAYER_TYPE_HARDWARE, mPaint);
+        findViewById(R.id.container).setLayerType(View.LAYER_TYPE_HARDWARE, mPaint);
     }
 
     public void disableLayer(View v) {
-        findViewById(R.id.list1).setLayerType(View.LAYER_TYPE_NONE, null);
+        findViewById(R.id.container).setLayerType(View.LAYER_TYPE_NONE, null);
     }
     
     public void growLayer(View v) {
-        findViewById(R.id.list1).getLayoutParams().height = ViewGroup.LayoutParams.MATCH_PARENT;
-        findViewById(R.id.list1).requestLayout();
+        findViewById(R.id.container).getLayoutParams().height = ViewGroup.LayoutParams.MATCH_PARENT;
+        findViewById(R.id.container).requestLayout();
     }
 
     public void shrinkLayer(View v) {
-        findViewById(R.id.list1).getLayoutParams().height = 300;
-        findViewById(R.id.list1).requestLayout();
+        findViewById(R.id.container).getLayoutParams().height = 300;
+        findViewById(R.id.container).requestLayout();
     }
     
     private void setupList(int listId) {