protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.getClipBounds(mRect);
final CategoryDataset dataset = createDataset();
final JFreeChart chart = createChart(dataset);
chart.draw(canvas, new Rectangle2D.Double(0, 0, mRect.width(), mRect.height()));
Paint p = new Paint();
p.setColor(Color.RED);
}
/**
* Creates a sample chart.
*
* @param dataset the dataset.
* @return a chart.
*/
private JFreeChart createChart(final CategoryDataset dataset) {
final JFreeChart chart =
ChartFactory.createLineChart(
"Line Chart Demo 5", // chart title
"Type", // domain axis label
"Value", // range axis label
dataset, // data
PlotOrientation.VERTICAL, // orientation
true, // include legend
true, // tooltips
false // urls
);
Paint white = new Paint(Paint.ANTI_ALIAS_FLAG);
white.setColor(Color.WHITE);
Paint dkGray = new Paint(Paint.ANTI_ALIAS_FLAG);
dkGray.setColor(Color.DKGRAY);
Paint lightGray = new Paint(Paint.ANTI_ALIAS_FLAG);
lightGray.setColor(Color.LTGRAY);
lightGray.setStrokeWidth(10);
final CategoryPlot plot = chart.getCategoryPlot();
plot.setBackgroundPaint(dkGray);
plot.setDomainGridlinePaint(lightGray);
plot.setRangeGridlinePaint(lightGray);
plot.setDomainGridlinesVisible(true);
chart.setBackgroundPaint(white);
// set the stroke for each series...
Paint blue = new Paint(Paint.ANTI_ALIAS_FLAG);
blue.setColor(Color.rgb(125, 138, 46));
// blue.set
blue.setAlpha(200);
blue.setStrokeWidth(10);
Paint green = new Paint(Paint.ANTI_ALIAS_FLAG);
green.setColor(Color.rgb(255, 240, 165));
green.setAlpha(200);
Paint red = new Paint(Paint.ANTI_ALIAS_FLAG);
red.setColor(Color.rgb(182, 73, 38));
red.setAlpha(200);
plot.getRenderer().setSeriesPaint(0, blue);
plot.getRenderer().setSeriesPaint(1, green);
plot.getRenderer().setSeriesPaint(2, red);
// customise the renderer...
final LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
renderer.setItemLabelsVisible(true);
renderer.setSeriesShapesVisible(0, true);
renderer.setSeriesShapesVisible(1, true);
renderer.setSeriesShapesVisible(2, true);
// customise the range axis...
final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
rangeAxis.setAutoRangeIncludesZero(false);
rangeAxis.setUpperMargin(0.12);
rangeAxis.setLabelAngle(90);
final CategoryAxis domainAxis = plot.getDomainAxis();
domainAxis.setCategoryLabelPositions(CategoryLabelPositions.STANDARD);
return chart;
}