com.mxgraph.canvas
Class mxGraphics2DCanvas

java.lang.Object
  com.mxgraph.canvas.mxBasicCanvas
      com.mxgraph.canvas.mxGraphics2DCanvas

All Implemented Interfaces:

mxICanvas

Direct Known Subclasses:

mxInteractiveCanvas

public class mxGraphics2DCanvas
extends mxBasicCanvas

An implementation of a canvas that uses Graphics2D for painting.

Field Summary

protected Graphics2D	g Global graphics handle to the image.
protected Hashtable<String,Image>	imageCache Cache for images.
protected CellRendererPane	rendererPane Optional renderer pane to be used for HTML label rendering.
protected boolean	replaceHtmlLinefeeds Specifies if linefeeds should be replaced with breaks in HTML markup.
protected static Map<String,mxIShape>	shapes Maps from names to mxIVertexShape instances.
static String	TEXT_SHAPE_DEFAULT
static String	TEXT_SHAPE_HTML
protected static Map<String,mxITextShape>	textShapes Maps from names to mxITextShape instances.

Fields inherited from class com.mxgraph.canvas.mxBasicCanvas

DEFAULT_IMAGEBASEPATH, drawLabels, imageBasePath, scale, translate

Constructor Summary

mxGraphics2DCanvas()
Constructs a new graphics canvas with an empty graphics object.

mxGraphics2DCanvas(Graphics2D g)
Constructs a new graphics canvas for the given graphics object.

Method Summary

Paint	createFillPaint(mxRectangle bounds, Map<String,Object> style)
Stroke	createStroke(Map<String,Object> style)
Graphics2D	createTemporaryGraphics(Map<String,Object> style, float opacity, mxRectangle bounds)
Object	drawCell(mxCellState state) Draws the given cell.
void	drawImage(Rectangle bounds, String imageUrl)
Object	drawLabel(String text, mxCellState state, boolean html) Draws the given label.
void	fillShape(Shape shape)
void	fillShape(Shape shape, boolean shadow)
void	flushImageCache()
Graphics2D	getGraphics() Returns the graphics object for this canvas.
CellRendererPane	getRendererPane()
mxIShape	getShape(Map<String,Object> style)
mxITextShape	getTextShape(Map<String,Object> style, boolean html)
boolean	isReplaceHtmlLinefeeds() Returns replaceHtmlLinefeeds
Image	loadImage(String image) Returns an image instance for the given URL.
void	paintPolyline(mxPoint[] points, boolean rounded)
void	paintRectangle(Rectangle bounds, Color background, Color border)
static void	putShape(String name, mxIShape shape)
static void	putTextShape(String name, mxITextShape shape)
void	setGraphics(Graphics2D g) Sets the graphics object for this canvas.
void	setReplaceHtmlLinefeeds(boolean value) Returns replaceHtmlLinefeeds

Methods inherited from class com.mxgraph.canvas.mxBasicCanvas

getImageBasePath, getImageForStyle, getScale, getTranslate, isDrawLabels, setDrawLabels, setImageBasePath, setScale, setTranslate

Methods inherited from class java.lang.Object

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

Field Detail

TEXT_SHAPE_DEFAULT

public static final String TEXT_SHAPE_DEFAULT

See Also:

Constant Field Values

TEXT_SHAPE_HTML

public static final String TEXT_SHAPE_HTML

See Also:

Constant Field Values

shapes

protected static Map<String,mxIShape> shapes

Maps from names to mxIVertexShape instances.

textShapes

protected static Map<String,mxITextShape> textShapes

Maps from names to mxITextShape instances. There are currently three different hardcoded text shapes available here: default, html and wrapped.

imageCache

protected Hashtable<String,Image> imageCache

Cache for images.

replaceHtmlLinefeeds

protected boolean replaceHtmlLinefeeds

Specifies if linefeeds should be replaced with breaks in HTML markup. Default is true.

rendererPane

protected CellRendererPane rendererPane

Optional renderer pane to be used for HTML label rendering.

g

protected Graphics2D g

Global graphics handle to the image.

Constructor Detail

mxGraphics2DCanvas

public mxGraphics2DCanvas()

Constructs a new graphics canvas with an empty graphics object.

mxGraphics2DCanvas

public mxGraphics2DCanvas(Graphics2D g)

Constructs a new graphics canvas for the given graphics object.

Method Detail

putShape

public static void putShape(String name,
                            mxIShape shape)

getShape

public mxIShape getShape(Map<String,Object> style)

putTextShape

public static void putTextShape(String name,
                                mxITextShape shape)

getTextShape

public mxITextShape getTextShape(Map<String,Object> style,
                                 boolean html)

getRendererPane

public CellRendererPane getRendererPane()

isReplaceHtmlLinefeeds

public boolean isReplaceHtmlLinefeeds()

Returns replaceHtmlLinefeeds

setReplaceHtmlLinefeeds

public void setReplaceHtmlLinefeeds(boolean value)

Returns replaceHtmlLinefeeds

getGraphics

public Graphics2D getGraphics()

Returns the graphics object for this canvas.

setGraphics

public void setGraphics(Graphics2D g)

Sets the graphics object for this canvas.

drawCell

public Object drawCell(mxCellState state)

Description copied from interface: mxICanvas

Draws the given cell.

Parameters:

state - State of the cell to be painted.

Returns:

Object that represents the cell.

drawLabel

public Object drawLabel(String text,
                        mxCellState state,
                        boolean html)

Description copied from interface: mxICanvas

Draws the given label.

Parameters:

text - 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.

loadImage

public Image loadImage(String image)

Returns an image instance for the given URL. If the URL has been loaded before than an instance of the same instance is returned as in the previous call.

flushImageCache

public void flushImageCache()

drawImage

public void drawImage(Rectangle bounds,
                      String imageUrl)

paintPolyline

public void paintPolyline(mxPoint[] points,
                          boolean rounded)

paintRectangle

public void paintRectangle(Rectangle bounds,
                           Color background,
                           Color border)

fillShape

public void fillShape(Shape shape)

fillShape

public void fillShape(Shape shape,
                      boolean shadow)

createStroke

public Stroke createStroke(Map<String,Object> style)

createFillPaint

public Paint createFillPaint(mxRectangle bounds,
                             Map<String,Object> style)

createTemporaryGraphics

public Graphics2D createTemporaryGraphics(Map<String,Object> style,
                                          float opacity,
                                          mxRectangle bounds)