NewLayersActivity.java revision f607bdc167f66b3e7003acaa4736ae46d78c1492
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 17package com.android.test.hwui; 18 19import android.app.Activity; 20import android.content.Context; 21import android.graphics.Canvas; 22import android.graphics.Paint; 23import android.os.Bundle; 24import android.view.View; 25 26@SuppressWarnings({"UnusedDeclaration"}) 27public class NewLayersActivity extends Activity { 28 @Override 29 protected void onCreate(Bundle savedInstanceState) { 30 super.onCreate(savedInstanceState); 31 setContentView(new LayersView(this)); 32 } 33 34 static class LayersView extends View { 35 private Paint mLayerPaint; 36 private final Paint mRectPaint; 37 38 LayersView(Context c) { 39 super(c); 40 41 mLayerPaint = new Paint(); 42 mRectPaint = new Paint(); 43 mRectPaint.setAntiAlias(true); 44 mRectPaint.setTextSize(24.0f); 45 } 46 47 @Override 48 protected void onDraw(Canvas canvas) { 49 super.onDraw(canvas); 50 51 canvas.drawRGB(128, 255, 128); 52 canvas.translate(140.0f, 100.0f); 53 54 mLayerPaint.setAlpha(127); 55 int count = canvas.saveLayer(0.0f, 0.0f, 200.0f, 100.0f, mLayerPaint, 56 Canvas.ALL_SAVE_FLAG); 57 58 mRectPaint.setColor(0x7fff0000); 59 canvas.drawRect(-20.0f, -20.0f, 220.0f, 120.0f, mRectPaint); 60 61 mRectPaint.setColor(0xff000000); 62 canvas.drawText("This is a very long string to overlap between layers and framebuffer", 63 -100.0f, 50.0f, mRectPaint); 64 65 canvas.restoreToCount(count); 66 67 canvas.translate(0.0f, 200.0f); 68 69 mLayerPaint.setAlpha(127); 70 count = canvas.saveLayer(0.0f, 0.0f, 200.0f, 100.0f, mLayerPaint, 71 Canvas.HAS_ALPHA_LAYER_SAVE_FLAG); 72 73 mRectPaint.setColor(0x7fff0000); 74 canvas.drawRect(-20.0f, -20.0f, 220.0f, 120.0f, mRectPaint); 75 76 mRectPaint.setColor(0xff000000); 77 canvas.drawText("This is a very long string to overlap between layers and framebuffer", 78 -100.0f, 50.0f, mRectPaint); 79 80 canvas.restoreToCount(count); 81 } 82 } 83} 84