Graphics2DRenderer (Flying Saucer Core Renderer 9.1.20 API)

java.lang.Object
- org.xhtmlrenderer.simple.Graphics2DRenderer

```
public class Graphics2DRenderer
extends Object
```
Graphics2DRenderer supports headless rendering of XHTML documents, and is useful for rendering documents directly to images.

Graphics2DRenderer supports the XHTMLPanel.setDocument(Document), Container.layout(), and XHTMLPanel#render() methods from XHTMLPanel, as well as easy-to-use static utility methods. For example, to render a document in an image that is 600 pixels wide use the renderToImageAutoSize(String,int,int) method like this:
```
 BufferedImage img = Graphics2DRenderer.renderToImage( "test.xhtml", width);
 
```
Author:

Joshua Marinacci

Field Summary

Fields
Modifier and Type	Field and Description
`protected Dimension`	`dim` Dimensions of the image to render, in pixels.
`protected XHTMLPanel`	`panel` The panel we are using to render the document.

Constructor Summary

Constructors
Constructor and Description

Graphics2DRenderer()
Creates a new renderer with no document specified.

Constructors
Constructor and Description
`Graphics2DRenderer()` Creates a new renderer with no document specified.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Rectangle`	`getMinimumSize()` Returns the size image needed to render the document without anything going off the side.
`XHTMLPanel`	`getPanel()` Returns the panel used internally for rendering.
`SharedContext`	`getSharedContext()` Gets the SharedContext for layout and rendering.
`void`	`layout(Graphics2D g2, Dimension dim)` Lay out the document with the specified dimensions, without rendering.
`void`	`render(Graphics2D g2)` Renders the document to the given canvas.
`static BufferedImage`	`renderToImage(String url, int width, int height)` A static utility method to automatically create an image from a document; the image supports transparency.
`static BufferedImage`	`renderToImage(String url, int width, int height, int bufferedImageType)` A static utility method to automatically create an image from a document.
`static BufferedImage`	`renderToImageAutoSize(String url, int width)` A static utility method to automatically create an image from a document, where height is determined based on document content.
`static BufferedImage`	`renderToImageAutoSize(String url, int width, int bufferedImageType)` A static utility method to automatically create an image from a document, where height is determined based on document content.
`void`	`setDocument(Document doc, String base_url)` Sets the document to render, lays it out, and renders it.
`void`	`setDocument(String url)` Set the document to be rendered, lays it out, and renders it.
`void`	`setSharedContext(SharedContext ctx)` Sets the SharedContext for rendering.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - panel
```
protected XHTMLPanel panel
```
    The panel we are using to render the document.
  - dim
```
protected Dimension dim
```
    Dimensions of the image to render, in pixels.
- Constructor Detail
  - Graphics2DRenderer
```
public Graphics2DRenderer()
```
    Creates a new renderer with no document specified.
- Method Detail
  - layout
```
public void layout(Graphics2D g2,
                   Dimension dim)
```
    Lay out the document with the specified dimensions, without rendering.
    
    Parameters:
    
    g2 - the canvas to layout on.
    
    dim - dimensions of the container for the document
  - render
```
public void render(Graphics2D g2)
```
    Renders the document to the given canvas. Call layout() first.
    
    Parameters:
    
    g2 - Canvas to render to.
  - setDocument
```
public void setDocument(String url)
```
    Set the document to be rendered, lays it out, and renders it.
    
    Parameters:
    
    url - the URL for the document to render.
  - setDocument
```
public void setDocument(Document doc,
                        String base_url)
```
    Sets the document to render, lays it out, and renders it.
    
    Parameters:
    
    doc - the Document to render
    
    base_url - base URL for relative links within the Document.
  - setSharedContext
```
public void setSharedContext(SharedContext ctx)
```
    Sets the SharedContext for rendering.
    
    Parameters:
    
    ctx - The new renderingContext value
  - getMinimumSize
```
public Rectangle getMinimumSize()
```
    Returns the size image needed to render the document without anything going off the side. Could be different than the dimensions passed into layout because of text that couldn't break or a table that's set to be too big.
    
    Returns:
    
    A rectangle sized to the minimum size required for the document.
  - getSharedContext
```
public SharedContext getSharedContext()
```
    Gets the SharedContext for layout and rendering.
    
    Returns:
    
    see desc
  - getPanel
```
public XHTMLPanel getPanel()
```
    Returns the panel used internally for rendering.
  - renderToImage
```
public static BufferedImage renderToImage(String url,
                                          int width,
                                          int height)
```
    A static utility method to automatically create an image from a document; the image supports transparency. To render an image that does not support transparency, use the overloaded version of this method renderToImage(String, int, int, int).
    
    Parameters:
    
    url - URL for the document to render.
    
    width - Width in pixels of the layout container
    
    height - Height in pixels of the layout container
    
    Returns:
    
    Returns an Image containing the rendered document.
  - renderToImage
```
public static BufferedImage renderToImage(String url,
                                          int width,
                                          int height,
                                          int bufferedImageType)
```
    A static utility method to automatically create an image from a document. The buffered image type must be specified.
    
    Parameters:
    
    url - URL for the document to render.
    
    width - Width in pixels of the layout container
    
    height - Height in pixels of the layout container
    
    bufferedImageType - On of the pre-defined image types for a java.awt.image.BufferedImage, such as TYPE_INT_ARGB or TYPE_INT_RGB.
    
    Returns:
    
    Returns an Image containing the rendered document.
  - renderToImageAutoSize
```
public static BufferedImage renderToImageAutoSize(String url,
                                                  int width)
```
    A static utility method to automatically create an image from a document, where height is determined based on document content. To estimate a size before rendering, use setDocument(String) and then getMinimumSize(). The rendered image supports transparency.
    
    Parameters:
    
    url - java.net.URL for the document to render.
    
    width - Width in pixels of the layout container
    
    Returns:
    
    Returns an java.awt.Image containing the rendered document.
  - renderToImageAutoSize
```
public static BufferedImage renderToImageAutoSize(String url,
                                                  int width,
                                                  int bufferedImageType)
```
    A static utility method to automatically create an image from a document, where height is determined based on document content. To estimate a size before rendering, use setDocument(String) and then getMinimumSize().
    
    Parameters:
    
    url - java.net.URL for the document to render.
    
    width - Width in pixels of the layout container
    
    bufferedImageType - On of the pre-defined image types for a java.awt.image.BufferedImage, such as TYPE_INT_ARGB or TYPE_INT_RGB.
    
    Returns:
    
    Returns an java.awt.Image containing the rendered document.

Class Graphics2DRenderer

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

panel

dim

Constructor Detail

Graphics2DRenderer

Method Detail

layout

render

setDocument

setDocument

setSharedContext

getMinimumSize

getSharedContext

getPanel

renderToImage

renderToImage

renderToImageAutoSize

renderToImageAutoSize