Class Java2DRenderer
- java.lang.Object
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- org.xhtmlrenderer.swing.Java2DRenderer
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public class Java2DRenderer extends java.lang.Object
Renders an XML files, formatted with CSS, as an image. Input is a document in the form of file or URL, and output is a BufferedImage. A Java2DRenderer is not intended to be re-used for multiple document sources; just create new Java2DRenderers for each one you need. Java2DRenderer is not thread-safe. Standard usage pattern is
File xhtml = ... Java2DRenderer rend = new Java2DRenderer(xhtml); BufferedImage image = rend.getImage();
The document is not loaded, and layout and render don't take place, until
#getImage(int)
is called. Subsequent calls togetImage()
don't result in a reload; create a new Java2DRenderer instance to do so.As with
RootPanel
, you can access theSharedContext
instance that will be used by this renderer and change settings to control the rendering process; usegetSharedContext()
.By default, this renderer will render to an RGB image which does not support transparency. To use another type of BufferedImage, either set the image type using
setBufferedImageType(int)
before callinggetImage()
, or else override thecreateBufferedImage(int, int)
to have full control over the image we render to.Not thread-safe.
- See Also:
ITextRenderer
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Constructor Summary
Constructors Constructor Description Java2DRenderer(java.io.File file, int width)
Creates a new instance for a given File.Java2DRenderer(java.io.File file, int width, int height)
Creates a new instance for a given File.Java2DRenderer(java.lang.String url, int width)
Renderer for a given URL (which is also used as the base) and a specified width; height is calculated automatically.Java2DRenderer(java.lang.String url, int width, int height)
Renderer for a given URL and a specified width; height is calculated automatically.Java2DRenderer(java.lang.String url, java.lang.String baseurl, int width)
Renderer for a given URL and a specified width; height is calculated automatically.Java2DRenderer(java.lang.String url, java.lang.String baseUrl, int width, int height)
Creates a new instance for a given URL.Java2DRenderer(org.w3c.dom.Document doc, int width, int height)
Creates a new instance pointing to the given Document.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.awt.image.BufferedImage
getImage()
Renders the XML document if necessary and returns the resulting image.SharedContext
getSharedContext()
Returns the SharedContext to be used by renderer.void
setBufferedImageType(int bufferedImageType)
Sets the type for the BufferedImage used as output for this renderer; must be one of the values fromBufferedImage
allowed in that class' constructor as a type argument.void
setRenderingHints(java.util.Map hints)
Sets the rendering hints to apply to the Graphics2D instance used by the renderer; seeGraphics2D.setRenderingHints(java.util.Map)
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Constructor Detail
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Java2DRenderer
public Java2DRenderer(java.lang.String url, java.lang.String baseUrl, int width, int height)
Creates a new instance for a given URL. Does not render until#getImage(int)
is called for the first time.- Parameters:
url
- The location of the document to be rendered.baseurl
- The base url for the document, against which relative paths are resolved.width
- Target width, in pixels, for the image; required to provide horizontal bounds for the layout.
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Java2DRenderer
public Java2DRenderer(java.io.File file, int width, int height) throws java.io.IOException
Creates a new instance for a given File. Does not render until#getImage(int)
is called for the first time.- Parameters:
file
- The file to be rendered.width
- Target width, in pixels, for the image; required to provide horizontal bounds for the layout.height
- Target height, in pixels, for the image- Throws:
java.io.IOException
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Java2DRenderer
public Java2DRenderer(org.w3c.dom.Document doc, int width, int height)
Creates a new instance pointing to the given Document. Does not render until#getImage(int)
is called for the first time.- Parameters:
doc
- The document to be rendered.width
- Target width, in pixels, for the image; required to provide horizontal bounds for the layout.height
- Target height, in pixels, for the image.
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Java2DRenderer
public Java2DRenderer(java.io.File file, int width) throws java.io.IOException
Creates a new instance for a given File. Does not render until#getImage(int)
is called for the first time.- Parameters:
file
- The file to be rendered.width
- Target width, in pixels, for the image; required to provide horizontal bounds for the layout. Heght is calculated based on content- Throws:
java.io.IOException
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Java2DRenderer
public Java2DRenderer(java.lang.String url, int width)
Renderer for a given URL (which is also used as the base) and a specified width; height is calculated automatically.- Parameters:
url
- The location of the document to be rendered.width
- Target width, in pixels, for the image; required to provide horizontal bounds for the layout. Heght is calculated based on content
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Java2DRenderer
public Java2DRenderer(java.lang.String url, java.lang.String baseurl, int width)
Renderer for a given URL and a specified width; height is calculated automatically.- Parameters:
url
- The location of the document to be rendered.baseurl
- The base url for the document, against which relative paths are resolved.width
- Target width, in pixels, for the image; required to provide horizontal bounds for the layout. Heght is calculated based on content
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Java2DRenderer
public Java2DRenderer(java.lang.String url, int width, int height)
Renderer for a given URL and a specified width; height is calculated automatically.- Parameters:
url
- The location of the document to be rendered.baseurl
- The base url for the document, against which relative paths are resolved.width
- Target width, in pixels, for the image; required to provide horizontal bounds for the layout.height
- Target height, in pixels, for the image
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Method Detail
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setRenderingHints
public void setRenderingHints(java.util.Map hints)
Sets the rendering hints to apply to the Graphics2D instance used by the renderer; seeGraphics2D.setRenderingHints(java.util.Map)
. The Map need not specify values for all properties; any settings in this map will be applied as override to the default settings, and will not replace the entire Map for the Graphics2D instance.- Parameters:
hints
- values to override in default rendering hints for Graphics2D we are rendering to
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setBufferedImageType
public void setBufferedImageType(int bufferedImageType)
Sets the type for the BufferedImage used as output for this renderer; must be one of the values fromBufferedImage
allowed in that class' constructor as a type argument. See docs for the type parameter inBufferedImage(int, int, int)
. Defaults to RGB with no support for transparency. The type is used when the image is first created, so to change the default type do so before callinggetImage()
.- Parameters:
bufferedImageType
- the BufferedImage type to be used to create the image on which the document will be rendered.
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getSharedContext
public SharedContext getSharedContext()
Returns the SharedContext to be used by renderer. Is instantiated along with the class, so can be accessed beforegetImage()
is called to tune the rendering process.- Returns:
- the SharedContext instance that will be used by this renderer
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getImage
public java.awt.image.BufferedImage getImage()
Renders the XML document if necessary and returns the resulting image. If already rendered, same image reference will be returned.#getImage(int)
with the target width.- Returns:
- The XML rendered as a BufferedImage.
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