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.Bitmap; 22 import android.graphics.BitmapFactory; 23 import android.graphics.BitmapShader; 24 import android.graphics.Canvas; 25 import android.graphics.Color; 26 import android.graphics.ComposeShader; 27 import android.graphics.LinearGradient; 28 import android.graphics.Matrix; 29 import android.graphics.Paint; 30 import android.graphics.PorterDuff; 31 import android.graphics.Shader; 32 import android.os.Bundle; 33 import android.view.View; 34 35 @SuppressWarnings({"UnusedDeclaration"}) 36 public class AdvancedBlendActivity extends Activity { 37 @Override onCreate(Bundle savedInstanceState)38 protected void onCreate(Bundle savedInstanceState) { 39 super.onCreate(savedInstanceState); 40 41 setContentView(new ShadersView(this)); 42 } 43 44 public static class ShadersView extends View { 45 private BitmapShader mScaledShader; 46 private int mTexWidth; 47 private int mTexHeight; 48 private Paint mPaint; 49 private float mDrawWidth; 50 private float mDrawHeight; 51 private LinearGradient mHorGradient; 52 private ComposeShader mComposeShader; 53 private ComposeShader mCompose2Shader; 54 private ComposeShader mCompose3Shader; 55 private ComposeShader mCompose4Shader; 56 private ComposeShader mCompose5Shader; 57 private ComposeShader mCompose6Shader; 58 private BitmapShader mScaled2Shader; 59 ShadersView(Context c)60 public ShadersView(Context c) { 61 super(c); 62 63 Bitmap texture = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1); 64 mTexWidth = texture.getWidth(); 65 mTexHeight = texture.getHeight(); 66 mDrawWidth = mTexWidth * 2.2f; 67 mDrawHeight = mTexHeight * 1.2f; 68 69 mScaledShader = new BitmapShader(texture, Shader.TileMode.MIRROR, 70 Shader.TileMode.MIRROR); 71 Matrix m2 = new Matrix(); 72 m2.setScale(0.5f, 0.5f); 73 mScaledShader.setLocalMatrix(m2); 74 75 mScaled2Shader = new BitmapShader(texture, Shader.TileMode.MIRROR, 76 Shader.TileMode.MIRROR); 77 Matrix m3 = new Matrix(); 78 m3.setScale(0.1f, 0.1f); 79 mScaled2Shader.setLocalMatrix(m3); 80 81 mHorGradient = new LinearGradient(0.0f, 0.0f, mDrawWidth, 0.0f, 82 Color.BLACK, Color.WHITE, Shader.TileMode.CLAMP); 83 84 mComposeShader = new ComposeShader(mScaledShader, mHorGradient, 85 PorterDuff.Mode.DARKEN); 86 mCompose2Shader = new ComposeShader(mScaledShader, mHorGradient, 87 PorterDuff.Mode.LIGHTEN); 88 mCompose3Shader = new ComposeShader(mScaledShader, mHorGradient, 89 PorterDuff.Mode.MULTIPLY); 90 mCompose4Shader = new ComposeShader(mScaledShader, mHorGradient, 91 PorterDuff.Mode.SCREEN); 92 mCompose5Shader = new ComposeShader(mScaledShader, mHorGradient, 93 PorterDuff.Mode.ADD); 94 mCompose6Shader = new ComposeShader(mHorGradient, mScaledShader, 95 PorterDuff.Mode.OVERLAY); 96 97 mPaint = new Paint(); 98 } 99 100 @Override onDraw(Canvas canvas)101 protected void onDraw(Canvas canvas) { 102 super.onDraw(canvas); 103 canvas.drawRGB(255, 255, 255); 104 105 canvas.save(); 106 canvas.translate(40.0f, 40.0f); 107 108 mPaint.setShader(mComposeShader); 109 canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint); 110 111 canvas.translate(0.0f, 40.0f + mDrawHeight); 112 mPaint.setShader(mCompose2Shader); 113 canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint); 114 115 canvas.translate(0.0f, 40.0f + mDrawHeight); 116 mPaint.setShader(mCompose3Shader); 117 canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint); 118 119 canvas.restore(); 120 121 canvas.save(); 122 canvas.translate(40.0f + mDrawWidth + 40.0f, 40.0f); 123 124 mPaint.setShader(mCompose4Shader); 125 canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint); 126 127 canvas.translate(0.0f, 40.0f + mDrawHeight); 128 mPaint.setShader(mCompose5Shader); 129 canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint); 130 131 canvas.translate(0.0f, 40.0f + mDrawHeight); 132 mPaint.setShader(mCompose6Shader); 133 canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint); 134 135 canvas.restore(); 136 } 137 } 138 } 139