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      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.Canvas;
     22 import android.graphics.Color;
     23 import android.graphics.Paint;
     24 import android.graphics.Path;
     25 import android.os.Bundle;
     26 import android.util.Log;
     27 import android.view.View;
     28 
     29 @SuppressWarnings({"UnusedDeclaration"})
     30 public class PathOpsActivity extends Activity {
     31     @Override
     32     protected void onCreate(Bundle savedInstanceState) {
     33         super.onCreate(savedInstanceState);
     34         final PathsView view = new PathsView(this);
     35         setContentView(view);
     36     }
     37 
     38     public static class PathsView extends View {
     39         private final Paint mPaint;
     40         private Path[] mPaths;
     41         private float mSize;
     42 
     43 
     44         public PathsView(Context c) {
     45             super(c);
     46 
     47             mPaint = new Paint();
     48             mPaint.setAntiAlias(true);
     49             mPaint.setStyle(Paint.Style.FILL);
     50             mPaint.setColor(Color.RED);
     51         }
     52 
     53         @Override
     54         protected void onSizeChanged(int w, int h, int oldw, int oldh) {
     55             super.onSizeChanged(w, h, oldw, oldh);
     56 
     57             Path.Op[] ops = Path.Op.values();
     58             mPaths = new Path[ops.length];
     59 
     60             mSize = w / (ops.length * 2.0f);
     61 
     62             Path p1 = new Path();
     63             p1.addRect(0.0f, 0.0f, mSize, mSize, Path.Direction.CW);
     64 
     65             Path p2 = new Path();
     66             p2.addCircle(mSize, mSize, mSize / 2.0f, Path.Direction.CW);
     67 
     68             for (int i = 0; i < ops.length; i++) {
     69                 mPaths[i] = new Path();
     70                 if (!mPaths[i].op(p1, p2, ops[i])) {
     71                     Log.d("PathOps", ops[i].name() + " failed!");
     72                 }
     73             }
     74         }
     75 
     76         @Override
     77         protected void onDraw(Canvas canvas) {
     78             super.onDraw(canvas);
     79 
     80             canvas.translate(mSize * 0.2f, getHeight() / 2.0f);
     81             for (Path path : mPaths) {
     82                 canvas.drawPath(path, mPaint);
     83                 canvas.translate(mSize * 1.8f, 0.0f);
     84             }
     85         }
     86     }
     87 }
     88