org.apache.fop.render.java2d
Class Java2DGraphicsState

java.lang.Object
  org.apache.fop.render.java2d.Java2DGraphicsState

public class Java2DGraphicsState
extends java.lang.Object

Keeps information about the current state of the Graphics2D currentGraphics. It is also used as a stack to hold a graphics context.

The graphics context is updated with the updateXXX() methods.

Constructor Summary

Java2DGraphicsState(java.awt.Graphics2D graphics, FontInfo fontInfo, java.awt.geom.AffineTransform at)
State for storing graphics state.

Java2DGraphicsState(Java2DGraphicsState org)
Copy constructor.

Method Summary

void	dispose() Frees resources allocated by the current Graphics2D instance.
java.awt.Color	getColor()
java.awt.Font	getFont()
java.awt.Graphics2D	getGraph()
java.awt.BasicStroke	getStroke()
java.awt.geom.AffineTransform	getTransform() Get the current transform.
java.lang.String	toString()
void	transform(java.awt.geom.AffineTransform tf) Composes an AffineTransform object with the Transform in this Graphics2D according to the rule last-specified-first-applied.
boolean	updateClip(java.awt.Shape cl) Set the current clip.
boolean	updateColor(java.awt.Color col) Set the current background color.
boolean	updateFont(java.lang.String name, int size) Set the current font name.
boolean	updatePaint(java.awt.Paint p) Set the current paint.
boolean	updateStroke(float width, int style) Sets the current Stroke.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Java2DGraphicsState

public Java2DGraphicsState(java.awt.Graphics2D graphics,
                           FontInfo fontInfo,
                           java.awt.geom.AffineTransform at)

State for storing graphics state.

Parameters:

graphics - the graphics associated with the BufferedImage

fontInfo - the FontInfo from the renderer

at - the initial AffineTransform containing the scale transformation

Java2DGraphicsState

public Java2DGraphicsState(Java2DGraphicsState org)

Copy constructor.

Parameters:

org - the instance to copy

Method Detail

getGraph

public java.awt.Graphics2D getGraph()

Returns:

the currently valid state

dispose

public void dispose()

Frees resources allocated by the current Graphics2D instance.

updateColor

public boolean updateColor(java.awt.Color col)

Set the current background color. Check if the background color will change and then set the new color.

Parameters:

col - the new color as a java.awt.Color

Returns:

true if the background color has changed

getColor

public java.awt.Color getColor()

Returns:

the current java.awt.Color

updateFont

public boolean updateFont(java.lang.String name,
                          int size)

Set the current font name. Check if the font name will change and then set the new name.

Parameters:

name - the new font name

size - the font size

Returns:

true if the new Font changes the current Font

getFont

public java.awt.Font getFont()

Returns:

the current java.awt.Font

updateStroke

public boolean updateStroke(float width,
                            int style)

Sets the current Stroke. The line width should be set with updateLineWidth() before calling this method

Parameters:

width - the line width

style - the constant for the style of the line as an int

Returns:

true if the new Stroke changes the current Stroke

getStroke

public java.awt.BasicStroke getStroke()

Returns:

the currently active Stroke

updatePaint

public boolean updatePaint(java.awt.Paint p)

Set the current paint. This checks if the paint will change and then sets the current paint.

Parameters:

p - the new paint

Returns:

true if the new paint changes the current paint

updateClip

public boolean updateClip(java.awt.Shape cl)

Set the current clip. This either sets a new clip or sets the clip to the intersect of the old clip and the new clip.

Parameters:

cl - the new clip in the current state

Returns:

true if the clip shape needed to be updated

transform

public void transform(java.awt.geom.AffineTransform tf)

Composes an AffineTransform object with the Transform in this Graphics2D according to the rule last-specified-first-applied.

Parameters:

tf - the transform to concatenate to the current level transform

See Also:

Graphics2D.transform(AffineTransform)

getTransform

public java.awt.geom.AffineTransform getTransform()

Get the current transform. This gets the combination of all transforms in the current state.

Returns:

the calculate combined transform for the current state

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object