| /* |
| * 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.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 AlphaLayersActivity 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); |
| } |
| } |
| } |