1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.test.hwui; 18 19 import android.app.Activity; 20 import android.content.Context; 21 import android.graphics.Canvas; 22 import android.graphics.Paint; 23 import android.os.Bundle; 24 import android.view.View; 25 26 @SuppressWarnings({"UnusedDeclaration"}) 27 public class NewLayersActivity extends Activity { 28 @Override onCreate(Bundle savedInstanceState)29 protected void onCreate(Bundle savedInstanceState) { 30 super.onCreate(savedInstanceState); 31 setContentView(new LayersView(this)); 32 } 33 34 public static class LayersView extends View { 35 private Paint mLayerPaint; 36 private final Paint mRectPaint; 37 LayersView(Context c)38 public LayersView(Context c) { 39 super(c); 40 41 mLayerPaint = new Paint(); 42 mLayerPaint.setAlpha(127); 43 mRectPaint = new Paint(); 44 mRectPaint.setAntiAlias(true); 45 mRectPaint.setTextSize(24.0f); 46 } 47 48 @Override onDraw(Canvas canvas)49 protected void onDraw(Canvas canvas) { 50 super.onDraw(canvas); 51 canvas.drawRGB(128, 255, 128); 52 53 canvas.save(); 54 55 canvas.translate(140.0f, 100.0f); 56 drawStuff(canvas, Canvas.ALL_SAVE_FLAG); 57 58 canvas.translate(0.0f, 200.0f); 59 drawStuff(canvas, Canvas.HAS_ALPHA_LAYER_SAVE_FLAG); 60 61 canvas.restore(); 62 } 63 drawStuff(Canvas canvas, int saveFlags)64 private void drawStuff(Canvas canvas, int saveFlags) { 65 int count = canvas.saveLayer(0.0f, 0.0f, 200.0f, 100.0f, mLayerPaint, saveFlags); 66 67 mRectPaint.setColor(0x7fff0000); 68 canvas.drawRect(-20.0f, -20.0f, 220.0f, 120.0f, mRectPaint); 69 70 mRectPaint.setColor(0xff000000); 71 canvas.drawText("This is a very long string to overlap between layers and framebuffer", 72 -100.0f, 50.0f, mRectPaint); 73 74 canvas.restoreToCount(count); 75 } 76 } 77 } 78