Package org.jfree.chart.block
Class EmptyBlock
- java.lang.Object
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- org.jfree.chart.block.AbstractBlock
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- org.jfree.chart.block.EmptyBlock
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Cloneable
,Block
,Drawable
,PublicCloneable
public class EmptyBlock extends AbstractBlock implements Block, java.lang.Cloneable, PublicCloneable, java.io.Serializable
An empty block with a fixed size.- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description private static long
serialVersionUID
For serialization.
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Constructor Summary
Constructors Constructor Description EmptyBlock(double width, double height)
Creates a new block with the specified width and height.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description 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, canEqual, drawBorder, equals, getBounds, getContentXOffset, getContentYOffset, getFrame, getHeight, getID, getMargin, getPadding, getWidth, hashCode, setBorder, setBounds, setFrame, setHeight, setID, setMargin, setMargin, setPadding, setPadding, setWidth, toContentConstraint, trimBorder, trimMargin, trimPadding, trimToContentHeight, trimToContentWidth
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Field Detail
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serialVersionUID
private static final long serialVersionUID
For serialization.- See Also:
- Constant Field Values
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Method Detail
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arrange
public 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 interfaceBlock
- Overrides:
arrange
in classAbstractBlock
- Parameters:
g2
- the graphics device.constraint
- the constraint (null
not permitted).- Returns:
- The block size (in Java2D units, never
null
).
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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.
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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.
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clone
public java.lang.Object clone() throws java.lang.CloneNotSupportedException
Returns a clone of the block.- Specified by:
clone
in interfacePublicCloneable
- Overrides:
clone
in classAbstractBlock
- Returns:
- A clone.
- Throws:
java.lang.CloneNotSupportedException
- if there is a problem cloning.
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