Home | History | Annotate | Download | only in hwui 
      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.LinearGradient;
     27 import android.graphics.Matrix;
     28 import android.graphics.Paint;
     29 import android.graphics.Shader;
     30 import android.os.Bundle;
     31 import android.view.View;
     32 
     33 @SuppressWarnings({"UnusedDeclaration"})
     34 public class ShadersActivity extends Activity {
     35     @Override
     36     protected void onCreate(Bundle savedInstanceState) {
     37         super.onCreate(savedInstanceState);
     38 
     39         setContentView(new ShadersView(this));
     40     }
     41 
     42     public static class ShadersView extends View {
     43         private BitmapShader mRepeatShader;
     44         private BitmapShader mTranslatedShader;
     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 LinearGradient mDiagGradient;
     53         private LinearGradient mVertGradient;
     54         private Bitmap mTexture;
     55         private Matrix mMtx1;
     56         private Matrix mMtx2;
     57         private Matrix mMtx3;
     58 
     59         public ShadersView(Context c) {
     60             super(c);
     61 
     62             mTexture = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1);
     63             mTexWidth = mTexture.getWidth();
     64             mTexHeight = mTexture.getHeight();
     65             mDrawWidth = mTexWidth * 2.2f;
     66             mDrawHeight = mTexHeight * 1.2f;
     67 
     68             mRepeatShader = new BitmapShader(mTexture, Shader.TileMode.REPEAT,
     69                     Shader.TileMode.REPEAT);
     70 
     71             mTranslatedShader = new BitmapShader(mTexture, Shader.TileMode.REPEAT,
     72                     Shader.TileMode.REPEAT);
     73             mMtx1 = new Matrix();
     74             mMtx1.setTranslate(mTexWidth / 2.0f, mTexHeight / 2.0f);
     75             mMtx1.postRotate(45, 0, 0);
     76             mTranslatedShader.setLocalMatrix(mMtx1);
     77 
     78             mScaledShader = new BitmapShader(mTexture, Shader.TileMode.MIRROR,
     79                     Shader.TileMode.MIRROR);
     80             mMtx2 = new Matrix();
     81             mMtx2.setScale(0.5f, 0.5f);
     82             mScaledShader.setLocalMatrix(mMtx2);
     83 
     84             mHorGradient = new LinearGradient(0.0f, 0.0f, 1.0f, 0.0f,
     85                     Color.RED, Color.GREEN, Shader.TileMode.CLAMP);
     86             mMtx3 = new Matrix();
     87             mMtx3.setScale(mDrawHeight, 1.0f);
     88             mMtx3.postRotate(-90.0f);
     89             mMtx3.postTranslate(0.0f, mDrawHeight);
     90             mHorGradient.setLocalMatrix(mMtx3);
     91 
     92             mDiagGradient = new LinearGradient(0.0f, 0.0f, mDrawWidth / 1.5f, mDrawHeight,
     93                     Color.BLUE, Color.MAGENTA, Shader.TileMode.CLAMP);
     94 
     95             mVertGradient = new LinearGradient(0.0f, 0.0f, 0.0f, mDrawHeight / 2.0f,
     96                     Color.YELLOW, Color.MAGENTA, Shader.TileMode.MIRROR);
     97 
     98             mPaint = new Paint();
     99         }
    100 
    101         @Override
    102         protected void onDraw(Canvas canvas) {
    103             super.onDraw(canvas);
    104             //canvas.drawRGB(255, 255, 255);
    105             canvas.drawBitmap(mTexture, 0.0f, 0.0f, null);
    106 
    107             // Bitmap shaders
    108             canvas.save();
    109             canvas.translate(40.0f, 40.0f);
    110 
    111             mPaint.setShader(mRepeatShader);
    112             canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint);
    113 
    114             canvas.translate(0.0f, 40.0f + mDrawHeight);
    115             mPaint.setShader(mTranslatedShader);
    116             canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint);
    117 
    118             canvas.translate(0.0f, 40.0f + mDrawHeight);
    119             mPaint.setShader(mScaledShader);
    120             canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint);
    121 
    122             canvas.restore();
    123 
    124             // Gradients
    125             canvas.save();
    126             canvas.translate(40.0f + mDrawWidth + 40.0f, 40.0f);
    127 
    128             mPaint.setShader(mHorGradient);
    129             canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint);
    130 
    131             canvas.translate(0.0f, 40.0f + mDrawHeight);
    132             mPaint.setShader(mDiagGradient);
    133             canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint);
    134 
    135             canvas.translate(0.0f, 40.0f + mDrawHeight);
    136             mPaint.setShader(mVertGradient);
    137             canvas.drawRect(0.0f, 0.0f, mDrawWidth, mDrawHeight, mPaint);
    138 
    139             canvas.restore();
    140         }
    141     }
    142 }
    143