| /* |
| * 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.Bitmap; |
| import android.graphics.BitmapFactory; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.LinearGradient; |
| import android.graphics.Paint; |
| import android.graphics.PorterDuff; |
| import android.graphics.PorterDuffXfermode; |
| import android.graphics.Shader; |
| import android.os.Bundle; |
| import android.view.View; |
| |
| @SuppressWarnings({"UnusedDeclaration"}) |
| public class FramebufferBlendActivity extends Activity { |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| setContentView(new BlendView(this)); |
| } |
| |
| static class BlendView extends View { |
| private int mTexWidth; |
| private int mTexHeight; |
| private Paint mPaint; |
| private LinearGradient mHorGradient; |
| private Bitmap mTexture; |
| |
| BlendView(Context c) { |
| super(c); |
| |
| mTexture = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1); |
| mTexWidth = mTexture.getWidth(); |
| mTexHeight = mTexture.getHeight(); |
| |
| mHorGradient = new LinearGradient(0.0f, 0.0f, mTexWidth, 0.0f, |
| Color.BLACK, Color.WHITE, Shader.TileMode.CLAMP); |
| |
| mPaint = new Paint(); |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| super.onDraw(canvas); |
| canvas.drawRGB(255, 255, 255); |
| |
| canvas.save(); |
| canvas.translate(40.0f, 40.0f); |
| |
| drawBlendedBitmap(canvas, PorterDuff.Mode.DARKEN); |
| drawBlendedBitmap(canvas, PorterDuff.Mode.LIGHTEN); |
| drawBlendedBitmap(canvas, PorterDuff.Mode.MULTIPLY); |
| |
| canvas.restore(); |
| |
| canvas.save(); |
| canvas.translate(40.0f + mTexWidth + 40.0f, 40.0f); |
| |
| drawBlendedBitmap(canvas, PorterDuff.Mode.SCREEN); |
| drawBlendedBitmap(canvas, PorterDuff.Mode.ADD); |
| drawBlendedBitmapInverse(canvas, PorterDuff.Mode.OVERLAY); |
| |
| canvas.restore(); |
| } |
| |
| private void drawBlendedBitmap(Canvas canvas, PorterDuff.Mode mode) { |
| mPaint.setShader(null); |
| mPaint.setXfermode(null); |
| canvas.drawBitmap(mTexture, 0.0f, 0.0f, mPaint); |
| |
| mPaint.setShader(mHorGradient); |
| mPaint.setXfermode(new PorterDuffXfermode(mode)); |
| canvas.drawRect(0.0f, 0.0f, mTexWidth, mTexHeight, mPaint); |
| |
| canvas.translate(0.0f, 40.0f + mTexHeight); |
| } |
| |
| private void drawBlendedBitmapInverse(Canvas canvas, PorterDuff.Mode mode) { |
| mPaint.setXfermode(null); |
| mPaint.setShader(mHorGradient); |
| canvas.drawRect(0.0f, 0.0f, mTexWidth, mTexHeight, mPaint); |
| |
| mPaint.setXfermode(new PorterDuffXfermode(mode)); |
| mPaint.setShader(null); |
| canvas.drawBitmap(mTexture, 0.0f, 0.0f, mPaint); |
| |
| canvas.translate(0.0f, 40.0f + mTexHeight); |
| } |
| } |
| } |