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      1 /*
      2  * Copyright 2012 AndroidPlot.com
      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.androidplot.demos;
     18 
     19 import android.app.Activity;
     20 import android.graphics.*;
     21 import android.os.Bundle;
     22 import android.widget.SeekBar;
     23 import android.widget.TextView;
     24 import com.androidplot.pie.PieChart;
     25 import com.androidplot.pie.PieRenderer;
     26 import com.androidplot.pie.Segment;
     27 import com.androidplot.pie.SegmentFormatter;
     28 
     29 /**
     30  * The simplest possible example of using AndroidPlot to plot some data.
     31  */
     32 public class SimplePieChartActivity extends Activity
     33 {
     34 
     35     private TextView donutSizeTextView;
     36     private SeekBar donutSizeSeekBar;
     37 
     38     private PieChart pie;
     39 
     40     private Segment s1;
     41     private Segment s2;
     42     private Segment s3;
     43     private Segment s4;
     44 
     45     @Override
     46     public void onCreate(Bundle savedInstanceState)
     47     {
     48 
     49         super.onCreate(savedInstanceState);
     50         setContentView(R.layout.pie_chart);
     51 
     52         // initialize our XYPlot reference:
     53         pie = (PieChart) findViewById(R.id.mySimplePieChart);
     54 
     55 
     56         donutSizeSeekBar = (SeekBar) findViewById(R.id.donutSizeSeekBar);
     57 
     58         donutSizeSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
     59             @Override
     60             public void onProgressChanged(SeekBar seekBar, int i, boolean b) {}
     61 
     62             @Override
     63             public void onStartTrackingTouch(SeekBar seekBar) {}
     64 
     65             @Override
     66             public void onStopTrackingTouch(SeekBar seekBar) {
     67                 pie.getRenderer(PieRenderer.class).setDonutSize(seekBar.getProgress()/100f,
     68                         PieRenderer.DonutMode.PERCENT);
     69                 pie.redraw();
     70                 updateDonutText();
     71             }
     72         });
     73 
     74         donutSizeTextView = (TextView) findViewById(R.id.donutSizeTextView);
     75         updateDonutText();
     76 
     77         s1 = new Segment("s1", 10);
     78         s2 = new Segment("s2", 1);
     79         s3 = new Segment("s3", 10);
     80         s4 = new Segment("s4", 10);
     81 
     82         EmbossMaskFilter emf = new EmbossMaskFilter(
     83                 new float[]{1, 1, 1}, 0.4f, 10, 8.2f);
     84 
     85         SegmentFormatter sf1 = new SegmentFormatter();
     86         sf1.configure(getApplicationContext(), R.xml.pie_segment_formatter1);
     87 
     88         sf1.getFillPaint().setMaskFilter(emf);
     89 
     90         SegmentFormatter sf2 = new SegmentFormatter();
     91         sf2.configure(getApplicationContext(), R.xml.pie_segment_formatter2);
     92 
     93         sf2.getFillPaint().setMaskFilter(emf);
     94 
     95         SegmentFormatter sf3 = new SegmentFormatter();
     96         sf3.configure(getApplicationContext(), R.xml.pie_segment_formatter3);
     97 
     98         sf3.getFillPaint().setMaskFilter(emf);
     99 
    100         SegmentFormatter sf4 = new SegmentFormatter();
    101         sf4.configure(getApplicationContext(), R.xml.pie_segment_formatter4);
    102 
    103         sf4.getFillPaint().setMaskFilter(emf);
    104 
    105         pie.addSeries(s1, sf1);
    106         pie.addSeries(s2, sf2);
    107         pie.addSeries(s3, sf3);
    108         pie.addSeries(s4, sf4);
    109 
    110         pie.getBorderPaint().setColor(Color.TRANSPARENT);
    111         pie.getBackgroundPaint().setColor(Color.TRANSPARENT);
    112     }
    113 
    114     protected void updateDonutText() {
    115         donutSizeTextView.setText(donutSizeSeekBar.getProgress() + "%");
    116     }
    117 }
    118