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org.jfree.chart.block
Class EmptyBlock

java.lang.Object
  extended by org.jfree.chart.block.AbstractBlock
      extended by org.jfree.chart.block.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 Summary
EmptyBlock(double width, double height)
          Creates a new block with the specified width and height.
 
Method Summary
 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.
 java.lang.Object clone()
          Returns a clone of the block.
 void draw(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D area)
          Draws the block.
 java.lang.Object draw(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D area, java.lang.Object params)
          Draws the block within the specified area.
 
Methods inherited from class org.jfree.chart.block.AbstractBlock
arrange, calculateTotalHeight, calculateTotalWidth, drawBorder, equals, getBorder, getBounds, getContentXOffset, getContentYOffset, getFrame, getHeight, getID, getMargin, getPadding, getWidth, setBorder, setBorder, setBounds, setFrame, setHeight, setID, setMargin, setMargin, setPadding, setPadding, setWidth, toContentConstraint, trimBorder, trimMargin, trimPadding, trimToContentHeight, trimToContentWidth
 
Methods inherited from class java.lang.Object
finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.jfree.chart.block.Block
arrange, getBounds, getID, setBounds, setID
 

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.

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