Package org.jfree.chart.block

Class EmptyBlock

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable, Block, org.jfree.ui.Drawable, org.jfree.util.PublicCloneable
    public class EmptyBlock
extends AbstractBlock
implements Block, java.lang.Cloneable, org.jfree.util.PublicCloneable, java.io.Serializable
    An empty block with a fixed size.
    See Also:
    Serialized Form

    • Constructor Detail

      • EmptyBlock

        public EmptyBlock​(double width,
                  double height)
        Creates a new block with the specified width and height.
        Parameters:
        width - the width.
        height - the height.

    • Method Detail

      • arrange

        public org.jfree.ui.Size2D arrange​(java.awt.Graphics2D g2,
                                   RectangleConstraint constraint)
        Arranges the contents of the block, within the given constraints, and returns the block size.
        Specified by:
        arrange in interface Block
        Overrides:
        arrange in class AbstractBlock
        Parameters:
        g2 - the graphics device.
        constraint - the constraint (null not permitted).
        Returns:
        The block size (in Java2D units, never null).

      • draw

        public void draw​(java.awt.Graphics2D g2,
                 java.awt.geom.Rectangle2D area)
        Draws the block. Since the block is empty, there is nothing to draw except the optional border.
        Specified by:
        draw in interface org.jfree.ui.Drawable
        Parameters:
        g2 - the graphics device.
        area - the area.

      • draw

        public java.lang.Object draw​(java.awt.Graphics2D g2,
                             java.awt.geom.Rectangle2D area,
                             java.lang.Object params)
        Draws the block within the specified area. Since the block is empty, there is nothing to draw except the optional border.
        Specified by:
        draw in interface Block
        Parameters:
        g2 - the graphics device.
        area - the area.
        params - ignored (null permitted).
        Returns:
        Always null.

      • clone

        public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException
        Returns a clone of the block.
        Specified by:
        clone in interface org.jfree.util.PublicCloneable
        Overrides:
        clone in class AbstractBlock
        Returns:
        A clone.
        Throws:
        java.lang.CloneNotSupportedException - if there is a problem cloning.