package name.abuchen.portfolio.ui.util.chart;
import java.text.DecimalFormat;
import java.util.List;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.joda.time.DateMidnight;
import org.joda.time.Days;
import org.joda.time.format.ISODateTimeFormat;
import org.swtchart.Chart;
import org.swtchart.IAxis;
import org.swtchart.IAxis.Position;
import org.swtchart.ICustomPaintListener;
import org.swtchart.ILineSeries;
import org.swtchart.ILineSeries.PlotSymbolType;
import org.swtchart.IPlotArea;
import org.swtchart.ISeries.SeriesType;
import org.swtchart.LineStyle;
import org.swtchart.Range;
public class StackedTimelineChart extends Chart
{
private TimelineChartToolTip toolTip;
private List<DateMidnight> dates;
public StackedTimelineChart(Composite parent, List<DateMidnight> dates)
{
super(parent, SWT.NONE);
this.dates = dates;
setBackground(Display.getDefault().getSystemColor(SWT.COLOR_WHITE));
getTitle().setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
getLegend().setVisible(false);
// x axis
IAxis xAxis = getAxisSet().getXAxis(0);
xAxis.getTitle().setVisible(false);
xAxis.getTick().setVisible(false);
xAxis.getGrid().setStyle(LineStyle.NONE);
String[] categories = new String[dates.size()];
for (int ii = 0; ii < categories.length; ii++)
categories[ii] = dates.get(ii).toString(ISODateTimeFormat.date());
xAxis.setCategorySeries(categories);
xAxis.enableCategory(true);
// y axis
IAxis yAxis = getAxisSet().getYAxis(0);
yAxis.getTitle().setVisible(false);
yAxis.getTick().setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));
yAxis.setPosition(Position.Secondary);
((IPlotArea) getPlotArea()).addCustomPaintListener(new ICustomPaintListener()
{
@Override
public void paintControl(PaintEvent e)
{
paintTimeGrid(e);
}
@Override
public boolean drawBehindSeries()
{
return true;
}
});
toolTip = new TimelineChartToolTip(this);
toolTip.enableCategory(true);
toolTip.setValueFormat(new DecimalFormat("#0.0%")); //$NON-NLS-1$
}
public ILineSeries addSeries(String label, double[] values, Color color)
{
ILineSeries series = (ILineSeries) getSeriesSet().createSeries(SeriesType.LINE, label);
series.setYSeries(values);
series.setLineWidth(2);
series.setSymbolType(PlotSymbolType.NONE);
series.setAntialias(SWT.ON);
series.enableStack(true);
series.enableArea(true);
series.setLineColor(color);
return series;
}
public TimelineChartToolTip getToolTip()
{
return toolTip;
}
private void paintTimeGrid(PaintEvent e)
{
IAxis xAxis = getAxisSet().getXAxis(0);
Range range = xAxis.getRange();
final DateMidnight start = dates.get(0);
final DateMidnight end = dates.get(dates.size() - 1);
int totalDays = Days.daysBetween(start, end).getDays() + 1;
DateMidnight current = start.plusYears(1).withMonthOfYear(1).withDayOfMonth(1);
while (current.isBefore(end))
{
int days = Days.daysBetween(start, current).getDays();
int y = xAxis.getPixelCoordinate((double) days * range.upper / (double) totalDays);
e.gc.drawLine(y, 0, y, e.height);
e.gc.drawText(String.valueOf(current.getYear()), y + 5, 5);
current = current.plusYears(1);
}
}
}