com.davisor.graphics.chart
Class SVGChart

java.lang.Object
  com.davisor.graphics.chart.AbstractChart
      com.davisor.graphics.chart.ImageChart
          com.davisor.graphics.chart.SVGChart

All Implemented Interfaces:

Chart, java.io.Serializable

public class SVGChart

extends ImageChart

SVGChart represents a chart generated by a chart factory as a SVG XML document. The result contains a XML document that is the chart itself, a reference to the graphics' context that generated the document, a reference to the factory that generated the chart and a copy of the factory settings that the chart was generated with. The data that the chart was generated with is not included.

Since:

JDK1.2

See Also:

BufferedChart, ChartAttributes, ChartFactory, Serialized Form

Field Summary

static java.lang.String	SVG_FONT_PARAMETER Image parameter 'svgFont' for controlling SVG fonts.
static java.lang.String	TEXT_ANTIALIAS_OFF Text antialising parameter value 'on'
static java.lang.String	TEXT_ANTIALIAS_ON Text antialising parameter value 'on'
static java.lang.String	TEXT_ANTIALIAS_PARAMETER Image parameter 'text-antialias' for controlling text antialiasing.
static java.lang.String	TEXT_RENDERING_PARAMETER Image parameter 'text' for controlling text rendering strategy.
static java.lang.String	TEXT_RENDERING_SHAPE Text rendering parameter value 'shape' for SVG text shape rendering.
static java.lang.String	TEXT_RENDERING_SVG Text rendering parameter value 'svg' for using SVG text.

Fields inherited from class com.davisor.graphics.chart.ImageChart

M_backArea, M_graphics, M_image, M_imageParams, M_plotArea

Fields inherited from class com.davisor.graphics.chart.AbstractChart

M_annotatedShapes, M_contentType, M_height, M_resolution, M_width

Constructor Summary

	SVGChart(ChartAttributes attr) Creates a SVGChart out of the given factory and attributes.
protected	SVGChart(java.lang.Number width, java.lang.Number height, java.lang.Number resolution, java.util.List annotatedShapes) Creates a new SVG chart.
protected	SVGChart(java.lang.Number width, java.lang.Number height, java.lang.Number resolution, java.util.List annotatedShapes, java.lang.String imageParams) Creates a new SVG chart.
	SVGChart(SVGChart svgc) Shallow copy constructor.

Method Summary

java.awt.Image	getImage() Transcodes the chart into an image.
void	putImage(java.io.OutputStream stream, java.lang.String mime) Writes the chart image into a stream.

Methods inherited from class com.davisor.graphics.chart.ImageChart

getAnnotatedShapes, getBackArea, getGraphics, getImageParams, getPlotArea, putContent, putImage, putImage, putImage, setAntialiasDefaults, setAntialiasMode, setAntialiasMode, writeReplace

Methods inherited from class com.davisor.graphics.chart.AbstractChart

addAnnotatedShape, getContentType, getHeight, getHeightInMillimeters, getResolution, getSizeInMillimeters, getWidth, getWidthInMillimeters, putChart, putChart, setContentType

Methods inherited from class java.lang.Object

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

Field Detail

TEXT_ANTIALIAS_PARAMETER

public static final java.lang.String TEXT_ANTIALIAS_PARAMETER

Image parameter 'text-antialias' for controlling text antialiasing.

See Also:

Constant Field Values

TEXT_ANTIALIAS_ON

public static final java.lang.String TEXT_ANTIALIAS_ON

Text antialising parameter value 'on'

See Also:

Constant Field Values

TEXT_ANTIALIAS_OFF

public static final java.lang.String TEXT_ANTIALIAS_OFF

Text antialising parameter value 'on'

See Also:

Constant Field Values

TEXT_RENDERING_PARAMETER

public static final java.lang.String TEXT_RENDERING_PARAMETER

Image parameter 'text' for controlling text rendering strategy.

See Also:

Constant Field Values

TEXT_RENDERING_SVG

public static final java.lang.String TEXT_RENDERING_SVG

Text rendering parameter value 'svg' for using SVG text.

See Also:

Constant Field Values

TEXT_RENDERING_SHAPE

public static final java.lang.String TEXT_RENDERING_SHAPE

Text rendering parameter value 'shape' for SVG text shape rendering.

See Also:

Constant Field Values

SVG_FONT_PARAMETER

public static final java.lang.String SVG_FONT_PARAMETER

Image parameter 'svgFont' for controlling SVG fonts.

See Also:

Constant Field Values

Constructor Detail

SVGChart

protected SVGChart(java.lang.Number width,
                   java.lang.Number height,
                   java.lang.Number resolution,
                   java.util.List annotatedShapes)

Creates a new SVG chart.

Parameters:

width - chart width, in millimeters (may be null)

height - chart height, in millimeters (may be null)

resolution - resolution, in pixels-per-millimeters (may be null)

annotatedShapes - list of annotated shapes (may be null)

SVGChart

protected SVGChart(java.lang.Number width,
                   java.lang.Number height,
                   java.lang.Number resolution,
                   java.util.List annotatedShapes,
                   java.lang.String imageParams)

Creates a new SVG chart.

Parameters:

width - chart width, in millimeters (may be null)

height - chart height, in millimeters (may be null)

resolution - resolution, in pixels-per-millimeters (may be null)

annotatedShapes - list of annotated shapes (may be null)

imageParams - image encoding parameters (may be null)

SVGChart

public SVGChart(SVGChart svgc)

Shallow copy constructor.

SVGChart

public SVGChart(ChartAttributes attr)

Creates a SVGChart out of the given factory and attributes. The chart does not contain an image, but only a graphics context that will provide the SVG representation of the chart.

After the creation, the graphics will first be filled with the chart background color. If the chart render attributes also define a stroke, a borderline of the given color is drawn around the chart. If the color is not set, black color is used as default.

After the graphics context has been created, a rectangle object is created to record the inner bounds of the drawable area of the image. If a borderline was drawn around the image, the border area is reduced from the bounds.

If a borderline was drawn around the image, an initial translation is added to the context, so that the context origo coincides with the left upper corner of the drawable area inside the border line. The context rendering hints are configured as described by the chart attributes.

Parameters:

attr - chart attributes that tell the chart image's size and type, among other things

See Also:

ImageChart.getBackArea(), ImageChart.getGraphics(), ImageChart.getPlotArea(), ImageChart.setAntialiasMode(ChartAttributes)

Method Detail

getImage

public java.awt.Image getImage()

Transcodes the chart into an image. This method is provided only to fulfill the Chart interface specification, and it is a very expensive operation, because the SVG document has to be transcoded into a raster image.

Overrides:

getImage in class ImageChart

Returns:

transcoded image, or null if the transcoding fails.

See Also:

ImageChart.getGraphics()

putImage

public void putImage(java.io.OutputStream stream,
                     java.lang.String mime)
              throws java.io.IOException

Writes the chart image into a stream. The specified MIME type is ignored.

Overrides:

putImage in class ImageChart

Parameters:

stream - output stream

mime - ignored output MIME type

Throws:

java.io.IOException

See Also:

ImageChart.putImage(OutputStream)