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      1 /*
      2  * Copyright 2013 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.pie;
     18 
     19 import android.content.Context;
     20 import android.util.AttributeSet;
     21 import com.androidplot.Plot;
     22 import com.androidplot.ui.AnchorPosition;
     23 import com.androidplot.ui.SizeLayoutType;
     24 import com.androidplot.ui.SizeMetrics;
     25 import com.androidplot.util.PixelUtils;
     26 import com.androidplot.ui.XLayoutStyle;
     27 import com.androidplot.ui.YLayoutStyle;
     28 
     29 public class PieChart extends Plot<Segment, SegmentFormatter, PieRenderer> {
     30 
     31     private static final int DEFAULT_PIE_WIDGET_H_DP = 18;
     32     private static final int DEFAULT_PIE_WIDGET_W_DP = 10;
     33 
     34     private static final int DEFAULT_PIE_WIDGET_Y_OFFSET_DP = 0;
     35     private static final int DEFAULT_PIE_WIDGET_X_OFFSET_DP = 0;
     36 
     37     public void setPieWidget(PieWidget pieWidget) {
     38         this.pieWidget = pieWidget;
     39     }
     40 
     41     @SuppressWarnings("FieldCanBeLocal")
     42     private PieWidget pieWidget;
     43 
     44     public PieChart(Context context, String title) {
     45         super(context, title);
     46     }
     47 
     48     public PieChart(Context context, String title, RenderMode mode) {
     49         super(context, title, mode);
     50     }
     51 
     52     public PieChart(Context context, AttributeSet attributes) {
     53         super(context, attributes);
     54     }
     55 
     56     @Override
     57     protected void onPreInit() {
     58         pieWidget = new PieWidget(
     59                 getLayoutManager(),
     60                 this,
     61                 new SizeMetrics(
     62                         PixelUtils.dpToPix(DEFAULT_PIE_WIDGET_H_DP),
     63                         SizeLayoutType.FILL,
     64                         PixelUtils.dpToPix(DEFAULT_PIE_WIDGET_W_DP),
     65                         SizeLayoutType.FILL));
     66 
     67         pieWidget.position(
     68                 PixelUtils.dpToPix(DEFAULT_PIE_WIDGET_X_OFFSET_DP),
     69                 XLayoutStyle.ABSOLUTE_FROM_CENTER,
     70                 PixelUtils.dpToPix(DEFAULT_PIE_WIDGET_Y_OFFSET_DP),
     71                 YLayoutStyle.ABSOLUTE_FROM_CENTER,
     72                 AnchorPosition.CENTER);
     73 
     74         pieWidget.setPadding(10, 10, 10, 10);
     75 
     76         // TODO: can't remember why this getClass() check is neccessary.  test if it actually is...
     77         /*if (getClass().equals(PieChart.class) && attrs != null) {
     78             loadAttrs(context, attrs);
     79         }*/
     80     }
     81 
     82     public PieWidget getPieWidget() {
     83         return pieWidget;
     84     }
     85 
     86     public void addSegment(Segment segment, SegmentFormatter formatter) {
     87         addSeries(segment, formatter);
     88     }
     89 
     90     public void removeSegment(Segment segment) {
     91         removeSeries(segment);
     92     }
     93 }
     94