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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.Paint;
     23 import android.graphics.Path;
     24 import android.os.Bundle;
     25 import android.view.View;
     26 import android.widget.ScrollView;
     27 
     28 @SuppressWarnings({"UnusedDeclaration"})
     29 public class TextPathActivity extends Activity {
     30     @Override
     31     protected void onCreate(Bundle savedInstanceState) {
     32         super.onCreate(savedInstanceState);
     33 
     34         ScrollView scroller = new ScrollView(this);
     35         scroller.addView(new CustomTextView(this));
     36         setContentView(scroller);
     37     }
     38 
     39     static class CustomTextView extends View {
     40         private final Paint mHugePaint;
     41 
     42         CustomTextView(Context c) {
     43             super(c);
     44 
     45             mHugePaint = new Paint();
     46             mHugePaint.setAntiAlias(true);
     47             mHugePaint.setColor(0xff000000);
     48             mHugePaint.setTextSize(300f);
     49         }
     50 
     51         @Override
     52         protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
     53             setMeasuredDimension(MeasureSpec.getSize(widthMeasureSpec), 3000);
     54         }
     55 
     56         @Override
     57         protected void onDraw(Canvas canvas) {
     58             super.onDraw(canvas);
     59             canvas.drawRGB(255, 255, 255);
     60 
     61             Path path = new Path();
     62 
     63             canvas.translate(100.0f, 300.0f);
     64             drawTextAsPath(canvas, "Hello", path);
     65 
     66             canvas.translate(0.0f, 400.0f);
     67             drawTextAsPath(canvas, "OpenGL", path);
     68         }
     69 
     70         private void drawTextAsPath(Canvas canvas, String text, Path path) {
     71             int count = text.length();
     72             mHugePaint.getTextPath(text, 0, count, 0, 0, path);
     73             path.close();
     74             canvas.drawPath(path, mHugePaint);
     75         }
     76     }
     77 }
     78