Package eu.webtoolkit.jwt.chart

Interface WChartPalette

All Known Implementing Classes:

WStandardPalette

public interface WChartPalette

Abstract base class for styling rendered data series in charts.

This class provides an interface for a palette which sets strokes and fill strokes for data in a chart. A palette is an ordered list of styles, which is indexed by the chart to get a suitable style for a particular series (in case of WCartesianChart) or data row (in case of WPieChart). Each style is defined by a brush, two pen styles (one for borders, and one for plain lines), and a font color that is appropriate for drawing text within the brushed area.

To use a custom palette, you should reimplement this class, and then use WAbstractChart#setPalette() to use an instance of the palette.

Method Summary

Modifier and Type	Method	Description
WPen	getBorderPen(int index)	Returns a border pen from the palette.
WBrush	getBrush(int index)	Returns a brush from the palette.
WColor	getFontColor(int index)	Returns a font color from the palette.
WPen	getStrokePen(int index)	Returns a stroke pen from the palette.

Method Details

getBrush

WBrush getBrush(int index)

Returns a brush from the palette.

Returns the brush for the style with given index.

getBorderPen

WPen getBorderPen(int index)

Returns a border pen from the palette.

Returns the pen for stroking borders around an area filled using the brush at the same index.

See Also:

• getStrokePen(int index)
• getBrush(int index)

getStrokePen

WPen getStrokePen(int index)

Returns a stroke pen from the palette.

Returns the pen for stroking lines for the style with given index.

See Also:

• getStrokePen(int index)

getFontColor

WColor getFontColor(int index)

Returns a font color from the palette.

Returns a font color suitable for rendering text in the area filled with the brush at the same index.

See Also:

• getBrush(int index)