Merge "Prevent crash in ListView when changing cache hint."

                    final ArrayList<View> scrap = mScrapViews[i];

                    final int scrapCount = scrap.size();

                    for (int j = 0; j < scrapCount; j++) {

                        scrap.get(i).setDrawingCacheBackgroundColor(color);

                        scrap.get(j).setDrawingCacheBackgroundColor(color);

                    }

                }

            }

/*

 * Copyright (C) 2010 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.google.android.test.hwui;

import android.app.Activity;

import android.content.Context;

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 MultisamplingActivity extends Activity {

    private static final String LOG_TAG = "HwUi";

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        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"})

    static int dipToPx(Context c, int dip) {

        return (int) (c.getResources().getDisplayMetrics().density * dip + 0.5f);

    }

    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) {

            super(c);

            mPaint = new Paint();

        }

        @Override

        public void dispatchDraw(Canvas canvas) {

            canvas.drawRGB(255, 255, 255);

            mPaint.setColor(0xffff0000);

            canvas.drawRect(200.0f, 0.0f, 220.0f, 20.0f, mPaint);

            canvas.save();

            canvas.clipRect(20.0f, 0.0f, 40.0f, 20.0f);

            Log.d(LOG_TAG, "clipRect = " + canvas.getClipBounds());

            Log.d(LOG_TAG, "rejected = " + canvas.quickReject(100.0f, 100.0f, 110.0f, 110.0f,

                    Canvas.EdgeType.BW));

            Log.d(LOG_TAG, "rejected = " + canvas.quickReject(25.0f, 5.0f, 30.0f, 10.0f,

                    Canvas.EdgeType.BW));

            canvas.restore();

            canvas.save();

            canvas.scale(2.0f, 2.0f);

            canvas.clipRect(20.0f, 0.0f, 40.0f, 20.0f);

            Log.d(LOG_TAG, "clipRect = " + canvas.getClipBounds());

            Log.d(LOG_TAG, "rejected = " + canvas.quickReject(50.0f, 50.0f, 60.0f, 60.0f,

                    Canvas.EdgeType.BW));

            Log.d(LOG_TAG, "rejected = " + canvas.quickReject(25.0f, 5.0f, 30.0f, 10.0f,

                    Canvas.EdgeType.BW));

            canvas.restore();

            canvas.save();

            canvas.translate(20.0f, 20.0f);

            canvas.clipRect(20.0f, 0.0f, 40.0f, 20.0f);

            Log.d(LOG_TAG, "clipRect = " + canvas.getClipBounds());

            Log.d(LOG_TAG, "rejected = " + canvas.quickReject(80.0f, 80.0f, 90.0f, 90.0f,

                    Canvas.EdgeType.BW));

            Log.d(LOG_TAG, "rejected = " + canvas.quickReject(25.0f, 5.0f, 30.0f, 10.0f,

                    Canvas.EdgeType.BW));

            canvas.restore();

            canvas.save();

            canvas.scale(2.0f, 2.0f);            

            canvas.clipRect(20.0f, 0.0f, 40.0f, 20.0f);

            mPaint.setColor(0xff00ff00);

            canvas.drawRect(0.0f, 0.0f, 20.0f, 20.0f, mPaint);

            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);

        }

    }

}

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