MoreShadersActivity.java revision 3a03eeedafb3e3335b56bdb9c0a2f02104d32299
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.Bitmap; 22import android.graphics.BitmapFactory; 23import android.graphics.BitmapShader; 24import android.graphics.Canvas; 25import android.graphics.Color; 26import android.graphics.ColorFilter; 27import android.graphics.ComposeShader; 28import android.graphics.LightingColorFilter; 29import android.graphics.LinearGradient; 30import android.graphics.Matrix; 31import android.graphics.Paint; 32import android.graphics.PorterDuff; 33import android.graphics.Shader; 34import android.os.Bundle; 35import android.view.View; 36 37@SuppressWarnings({"UnusedDeclaration"}) 38public class MoreShadersActivity extends Activity { 39 @Override 40 protected void onCreate(Bundle savedInstanceState) { 41 super.onCreate(savedInstanceState); 42 43 setContentView(new ShadersView(this)); 44 } 45 46 static class ShadersView extends View { 47 private BitmapShader mScaledShader; 48 private int mTexWidth; 49 private int mTexHeight; 50 private Paint mPaint; 51 private float mDrawWidth; 52 private float mDrawHeight; 53 private LinearGradient mHorGradient; 54 private LinearGradient mVertGradient; 55 private ComposeShader mComposeShader; 56 private ComposeShader mCompose2Shader; 57 private Paint mLargePaint; 58 private BitmapShader mScaled2Shader; 59 private ColorFilter mColorFilter; 60 61 ShadersView(Context c) { 62 super(c); 63 64 Bitmap texture = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1); 65 mTexWidth = texture.getWidth(); 66 mTexHeight = texture.getHeight(); 67 mDrawWidth = mTexWidth * 2.2f; 68 mDrawHeight = mTexHeight * 1.2f; 69 70 mScaledShader = new BitmapShader(texture, Shader.TileMode.MIRROR, 71 Shader.TileMode.MIRROR); 72 Matrix m2 = new Matrix(); 73 m2.setScale(0.5f, 0.5f); 74 mScaledShader.setLocalMatrix(m2); 75 76 mScaled2Shader = new BitmapShader(texture, Shader.TileMode.MIRROR, 77 Shader.TileMode.MIRROR); 78 Matrix m3 = new Matrix(); 79 m3.setScale(0.1f, 0.1f); 80 mScaled2Shader.setLocalMatrix(m3); 81 82 mHorGradient = new LinearGradient(0.0f, 0.0f, mDrawWidth, 0.0f, 83 Color.RED, 0x7f00ff00, Shader.TileMode.CLAMP); 84 85 mVertGradient = new LinearGradient(0.0f, 0.0f, 0.0f, mDrawHeight / 2.0f, 86 Color.YELLOW, Color.MAGENTA, Shader.TileMode.MIRROR); 87 88 mComposeShader = new ComposeShader(mScaledShader, mHorGradient, 89 PorterDuff.Mode.SRC_OVER); 90 mCompose2Shader = new ComposeShader(mHorGradient, mScaledShader, 91 PorterDuff.Mode.SRC_OUT); 92 93 mColorFilter = new LightingColorFilter(0x0060ffff, 0x00101030); 94 95 mLargePaint = new Paint(); 96 mLargePaint.setAntiAlias(true); 97 mLargePaint.setTextSize(36.0f); 98 mLargePaint.setColor(0xff000000); 99 mLargePaint.setShadowLayer(3.0f, 0.0f, 3.0f, 0x7f00ff00); 100 101 mPaint = new Paint(); 102 } 103 104 @Override 105 protected void onDraw(Canvas canvas) { 106 super.onDraw(canvas); 107 canvas.drawRGB(255, 255, 255); 108 109 canvas.save(); 110 canvas.translate(40.0f, 40.0f); 111 112 mPaint.setShader(mComposeShader); 113 canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint); 114 115 canvas.translate(0.0f, 40.0f + mDrawHeight); 116 mPaint.setShader(mCompose2Shader); 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 mLargePaint.setShader(mHorGradient); 125 canvas.drawText("OpenGL rendering", 0.0f, 20.0f, mLargePaint); 126 127 mLargePaint.setShader(mScaled2Shader); 128 canvas.drawText("OpenGL rendering", 0.0f, 60.0f, mLargePaint); 129 130 mLargePaint.setShader(mCompose2Shader); 131 mLargePaint.setColorFilter(mColorFilter); 132 canvas.drawText("OpenGL rendering", 0.0f, 100.0f, mLargePaint); 133 mLargePaint.setColorFilter(null); 134 135 canvas.translate(0.0f, 40.0f + mDrawHeight); 136 mLargePaint.setShader(mVertGradient); 137 canvas.drawText("OpenGL rendering", 0.0f, 20.0f, mLargePaint); 138 139 canvas.restore(); 140 } 141 } 142} 143