Class GradientBarPainter

java.lang.Object
org.jfree.chart.renderer.category.GradientBarPainter
All Implemented Interfaces:
Serializable, BarPainter

public class GradientBarPainter extends Object implements BarPainter, Serializable
An implementation of the BarPainter interface that uses several gradient fills to enrich the appearance of the bars.
See Also:
  • Field Details

    • g1

      private double g1
      The division point between the first and second gradient regions.
    • g2

      private double g2
      The division point between the second and third gradient regions.
    • g3

      private double g3
      The division point between the third and fourth gradient regions.
  • Constructor Details

    • GradientBarPainter

      public GradientBarPainter()
      Creates a new instance.
    • GradientBarPainter

      public GradientBarPainter(double g1, double g2, double g3)
      Creates a new instance.
      Parameters:
      g1 - percentage value defining the line between regions 1 and 2.
      g2 - percentage value defining the line between regions 2 and 3.
      g3 - percentage value defining the line between regions 3 and 4.
  • Method Details

    • paintBar

      public void paintBar(Graphics2D g2, BarRenderer renderer, int row, int column, RectangularShape bar, RectangleEdge base)
      Paints a single bar instance.
      Specified by:
      paintBar in interface BarPainter
      Parameters:
      g2 - the graphics target.
      renderer - the renderer.
      row - the row index.
      column - the column index.
      bar - the bar
      base - indicates which side of the rectangle is the base of the bar.
    • paintBarShadow

      public void paintBarShadow(Graphics2D g2, BarRenderer renderer, int row, int column, RectangularShape bar, RectangleEdge base, boolean pegShadow)
      Paints a single bar instance.
      Specified by:
      paintBarShadow in interface BarPainter
      Parameters:
      g2 - the graphics target.
      renderer - the renderer.
      row - the row index.
      column - the column index.
      bar - the bar
      base - indicates which side of the rectangle is the base of the bar.
      pegShadow - peg the shadow to the base of the bar?
    • createShadow

      private Rectangle2D createShadow(RectangularShape bar, double xOffset, double yOffset, RectangleEdge base, boolean pegShadow)
      Creates a shadow for the bar.
      Parameters:
      bar - the bar shape.
      xOffset - the x-offset for the shadow.
      yOffset - the y-offset for the shadow.
      base - the edge that is the base of the bar.
      pegShadow - peg the shadow to the base?
      Returns:
      A rectangle for the shadow.
    • splitVerticalBar

      private Rectangle2D[] splitVerticalBar(RectangularShape bar, double a, double b, double c)
      Splits a bar into subregions (elsewhere, these subregions will have different gradients applied to them).
      Parameters:
      bar - the bar shape.
      a - the first division.
      b - the second division.
      c - the third division.
      Returns:
      An array containing four subregions.
    • splitHorizontalBar

      private Rectangle2D[] splitHorizontalBar(RectangularShape bar, double a, double b, double c)
      Splits a bar into subregions (elsewhere, these subregions will have different gradients applied to them).
      Parameters:
      bar - the bar shape.
      a - the first division.
      b - the second division.
      c - the third division.
      Returns:
      An array containing four subregions.
    • equals

      public boolean equals(Object obj)
      Tests this instance for equality with an arbitrary object.
      Overrides:
      equals in class Object
      Parameters:
      obj - the obj (null permitted).
      Returns:
      A boolean.
    • hashCode

      public int hashCode()
      Returns a hash code for this instance.
      Overrides:
      hashCode in class Object
      Returns:
      A hash code.