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)