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.
static int	IMAGE_SCALING Specifies the image scaling quality.
protected CellRendererPane	rendererPane Optional renderer pane to be used for HTML label rendering.
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, imageCache, PRESERVE_IMAGE_ASPECT, 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)
void	drawImage(Rectangle bounds, String imageUrl, boolean preserveAspect, boolean flipH, boolean flipV)
protected void	drawImageImpl(Image image, int x, int y) Implements the actual graphics call.
Object	drawLabel(String text, mxCellState state, boolean html) Draws the given label.
void	fillShape(Shape shape)
void	fillShape(Shape shape, boolean shadow)
Graphics2D	getGraphics() Returns the graphics object for this canvas.
protected Dimension	getImageSize(Image image) Returns the size for the given image.
CellRendererPane	getRendererPane()
mxIShape	getShape(Map<String,Object> style)
mxITextShape	getTextShape(Map<String,Object> style, boolean html)
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.

Methods inherited from class com.mxgraph.canvas.mxBasicCanvas

flushImageCache, getImageBasePath, getImageForStyle, getScale, getTranslate, isDrawLabels, loadImage, 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

IMAGE_SCALING

public static int IMAGE_SCALING

Specifies the image scaling quality. Default is Image.SCALE_SMOOTH.

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.

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()

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.

drawImage

public void drawImage(Rectangle bounds,
                      String imageUrl)

drawImage

public void drawImage(Rectangle bounds,
                      String imageUrl,
                      boolean preserveAspect,
                      boolean flipH,
                      boolean flipV)

drawImageImpl

protected void drawImageImpl(Image image,
                             int x,
                             int y)

Implements the actual graphics call.

getImageSize

protected Dimension getImageSize(Image image)

Returns the size for the given image.

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)