com.mxgraph.canvas

Class mxImageCanvas

java.lang.Object

com.mxgraph.canvas.mxImageCanvas

All Implemented Interfaces:

mxICanvas

public class mxImageCanvas
extends java.lang.Object
implements mxICanvas

An implementation of a canvas that uses Graphics2D for painting. To use an image canvas for an existing graphics canvas and create an image the following code is used: BufferedImage image = mxCellRenderer.createBufferedImage(graph, cells, 1, Color.white, true, null, canvas);

Field Summary

Fields

Modifier and Type	Field and Description
protected mxGraphics2DCanvas	canvas
protected java.awt.image.BufferedImage	image
protected java.awt.Graphics2D	previousGraphics

Constructor Summary

Constructors

Constructor and Description
mxImageCanvas(mxGraphics2DCanvas canvas, int width, int height, java.awt.Color background, boolean antiAlias)

Method Summary

Methods

Modifier and Type	Method and Description
java.awt.image.BufferedImage	destroy()
java.lang.Object	drawCell(mxCellState state) Draws the given cell.
java.lang.Object	drawLabel(java.lang.String label, mxCellState state, boolean html) Draws the given label.
mxGraphics2DCanvas	getGraphicsCanvas()
java.awt.image.BufferedImage	getImage()
double	getScale() Returns the scale.
java.awt.Point	getTranslate() Returns the current translation.
void	setScale(double scale) Sets the scale for the following drawing requests.
void	setTranslate(int dx, int dy) Sets the translation for the following drawing requests.

Methods inherited from class java.lang.Object

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

Field Detail

canvas

protected mxGraphics2DCanvas canvas

previousGraphics

protected java.awt.Graphics2D previousGraphics

image

protected java.awt.image.BufferedImage image

Constructor Detail

mxImageCanvas

public mxImageCanvas(mxGraphics2DCanvas canvas,
             int width,
             int height,
             java.awt.Color background,
             boolean antiAlias)

Method Detail

getGraphicsCanvas

public mxGraphics2DCanvas getGraphicsCanvas()

getImage

public java.awt.image.BufferedImage getImage()

drawCell

public java.lang.Object drawCell(mxCellState state)

Description copied from interface: mxICanvas

Draws the given cell.

Specified by:

drawCell in interface mxICanvas

Parameters:

state - State of the cell to be painted.

Returns:

Object that represents the cell.

drawLabel

public java.lang.Object drawLabel(java.lang.String label,
                         mxCellState state,
                         boolean html)

Description copied from interface: mxICanvas

Draws the given label.

Specified by:

drawLabel in interface mxICanvas

Parameters:

label - String that represents the label.

state - State of the cell whose label is to be painted.

html - Specifies if the label contains HTML markup.

Returns:

Object that represents the label.

getScale

public double getScale()

Description copied from interface: mxICanvas

Returns the scale.

Specified by:

getScale in interface mxICanvas

getTranslate

public java.awt.Point getTranslate()

Description copied from interface: mxICanvas

Returns the current translation.

Specified by:

getTranslate in interface mxICanvas

Returns:

Returns the current translation.

setScale

public void setScale(double scale)

Description copied from interface: mxICanvas

Sets the scale for the following drawing requests.

Specified by:

setScale in interface mxICanvas

setTranslate

public void setTranslate(int dx,
                int dy)

Description copied from interface: mxICanvas

Sets the translation for the following drawing requests.

Specified by:

setTranslate in interface mxICanvas

destroy

public java.awt.image.BufferedImage destroy()