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.ui;
18 
19 import android.graphics.Canvas;
20 import android.graphics.RectF;
21 import android.graphics.Region;
22 import com.androidplot.Series;
23 import com.androidplot.exception.PlotRenderException;
24 import com.androidplot.Plot;
25 
26 public abstract class SeriesRenderer
27         <PlotType extends Plot, SeriesType extends Series, SeriesFormatterType extends Formatter> {
28     private PlotType plot;
29 
SeriesRenderer(PlotType plot)30     public SeriesRenderer(PlotType plot) {
31         this.plot = plot;
32     }
33 
getPlot()34     public PlotType getPlot() {
35         return plot;
36     }
37 
setPlot(PlotType plot)38     public void setPlot(PlotType plot) {
39         this.plot = plot;
40     }
41 
getSeriesAndFormatterList()42     public SeriesAndFormatterList<SeriesType,SeriesFormatterType> getSeriesAndFormatterList() {
43         return plot.getSeriesAndFormatterListForRenderer(getClass());
44     }
45 
getFormatter(SeriesType series)46     public SeriesFormatterType getFormatter(SeriesType series) {
47         return (SeriesFormatterType) plot.getFormatter(series, getClass());
48     }
49 
render(Canvas canvas, RectF plotArea)50     public void render(Canvas canvas, RectF plotArea) throws PlotRenderException {
51         onRender(canvas, plotArea);
52     }
onRender(Canvas canvas, RectF plotArea)53     public abstract void onRender(Canvas canvas, RectF plotArea) throws PlotRenderException;
54 
55     /**
56      * Draw the legend icon in the rect passed in.
57      * @param canvas
58      * @param rect
59      */
doDrawLegendIcon(Canvas canvas, RectF rect, SeriesFormatterType formatter)60     protected abstract void doDrawLegendIcon(Canvas canvas, RectF rect, SeriesFormatterType formatter);
61 
drawSeriesLegendIcon(Canvas canvas, RectF rect, SeriesFormatterType formatter)62     public void drawSeriesLegendIcon(Canvas canvas, RectF rect, SeriesFormatterType formatter) {
63         //int state = canvas.save(Canvas.CLIP_SAVE_FLAG);
64         try {
65             canvas.save();
66             canvas.clipRect(rect);
67             doDrawLegendIcon(canvas, rect, formatter);
68             //canvas.restoreToCount(state);
69         } finally {
70             canvas.restore();
71         }
72     }
73 }
74