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## org.apache.fop.svg
Class PDFGraphics2D

    java.lang.Object
      java.awt.Graphics
          java.awt.Graphics2D
              org.apache.xmlgraphics.java2d.AbstractGraphics2D
                  org.apache.fop.svg.PDFGraphics2D

All Implemented Interfaces:
  java.lang.Cloneable, NativeImageHandler

Direct Known Subclasses:
  PDFDocumentGraphics2D

public class PDFGraphics2D
extends org.apache.xmlgraphics.java2d.AbstractGraphics2D
implements NativeImageHandler

PDF Graphics 2D. Used for drawing into a pdf document as if it is a graphics object. This takes a pdf document and draws into it.

Version:
  $Id: PDFGraphics2D.java 959945 2010-07-02 10:44:18Z jeremias $
Author:
  Keiron Liddle
See Also:
  `AbstractGraphics2D`

Field Summary
`protected int` | `baseLevel` The PDF graphics state level that this svg is being drawn into.
`protected java.lang.String` | `currentFontName` the current (internal) font name
`protected float` | `currentFontSize` the current font size in millipoints
`protected java.io.StringWriter` | `currentStream` the current stream to add PDF commands to
`protected FontInfo` | `fontInfo` The current font information.
`protected int` | `nativeCount` The count of natively handled images added to document so they receive unique keys.
`protected java.io.OutputStream` | `outputStream` The output stream for the pdf document.
`protected Font` | `ovFontState` The override font state used when drawing text and the font cannot be set using java fonts.
`protected java.lang.String` | `pageRef` The PDF reference of the current page.
`protected PDFPaintingState` | `paintingState` The PDF painting state
`protected PDFDocument` | `pdfDoc` the PDF Document being created
`protected PDFResourceContext` | `resourceContext` The current resource context for adding fonts, patterns etc.

Fields inherited from class org.apache.xmlgraphics.java2d.AbstractGraphics2D
`gc, inPossibleRecursion, textAsShapes`

Constructor Summary
`protected` | `PDFGraphics2D(boolean textAsShapes)` Create a new PDFGraphics2D.
`` | `PDFGraphics2D(boolean textAsShapes, FontInfo fi, PDFDocument doc, PDFResourceContext page, java.lang.String pref, java.lang.String font, float size)` Create a new PDFGraphics2D with the given pdf document info.
`` | `PDFGraphics2D(PDFGraphics2D g)` This constructor supports the create method.

Method Summary
`void` | `addLink(java.awt.geom.Rectangle2D bounds, java.awt.geom.AffineTransform trans, java.lang.String dest, int linkType)` This is a pdf specific method used to add a link to the pdf document.
`void` | `addNativeImage(org.apache.xmlgraphics.image.loader.Image image, float x, float y, float width, float height)` Add a natively handled image directly to the PDF document.
`protected void` | `applyAlpha(int fillAlpha, int strokeAlpha)` Applies the given alpha values for filling and stroking.
`protected void` | `applyColor(java.awt.Color col, boolean fill)` Apply the java Color to PDF.
`protected boolean` | `applyPaint(java.awt.Paint paint, boolean fill)` Apply the java paint to the PDF.
`protected void` | `applyStroke(java.awt.Stroke stroke)` Apply the stroke to the PDF.
`protected boolean` | `applyUnknownPaint(java.awt.Paint paint, java.awt.Shape shape)`
`protected void` | `checkTransparencyAllowed()` Checks whether the use of transparency is allowed.
`void` | `copyArea(int x, int y, int width, int height, int dx, int dy)` Copies an area of the component by a distance specified by `dx` and `dy`.
`java.awt.Graphics` | `create()` Creates a new `Graphics` object that is a copy of this `Graphics` object.
`void` | `dispose()` Disposes of this graphics context and releases any system resources that it is using.
`protected void` | `doDrawing(boolean fill, boolean stroke, boolean nonzero)` Do the PDF drawing command.
`void` | `draw(java.awt.Shape s)` Strokes the outline of a `Shape` using the settings of the current `Graphics2D` context.
`boolean` | `drawImage(java.awt.Image img, int x, int y, java.awt.image.ImageObserver observer)` Draws as much of the specified image as is currently available.
`boolean` | `drawImage(java.awt.Image img, int x, int y, int width, int height, java.awt.image.ImageObserver observer)`
`void` | `drawInnerRenderedImage(java.lang.String key, java.awt.image.RenderedImage img, java.awt.geom.AffineTransform xform)` {@inheritDoc}
`void` | `drawRenderableImage(java.awt.image.renderable.RenderableImage img, java.awt.geom.AffineTransform xform)`
`void` | `drawRenderedImage(java.awt.image.RenderedImage img, java.awt.geom.AffineTransform xform)`
`void` | `drawString(java.lang.String s, float x, float y)` Renders the text specified by the specified `String`, using the current `Font` and `Paint` attributes in the `Graphics2D` context.
`void` | `fill(java.awt.Shape s)` Fills the interior of a `Shape` using the settings of the `Graphics2D` context.
`protected java.awt.geom.AffineTransform` | `getBaseTransform()` This is mainly used for shading patterns which use the document-global coordinate system instead of the local one.
`java.lang.StringBuffer` | `getBuffer()` Get the string buffer from the currentStream, containing all the commands written into this Graphics so far.
`java.awt.GraphicsConfiguration` | `getDeviceConfiguration()` Returns the device configuration associated with this `Graphics2D`.
`java.awt.FontMetrics` | `getFontMetrics(java.awt.Font f)` Gets the font metrics for the specified font.
`protected Font` | `getInternalFontForAWTFont(java.awt.Font awtFont)` Deprecated. use FontInfo.getFontInstanceForAWTFont(java.awt.Font awtFont) instead
`java.lang.String` | `getPageReference()` Gets the PDF reference of the current page.
`java.lang.String` | `getString()` Get the string containing all the commands written into this Graphics.
`protected void` | `handleIOException(java.io.IOException ioe)` Central handler for IOExceptions for this class.
`protected boolean` | `isMultiByteFont(java.lang.String name)` Determines whether the font with the given name is a multi-byte font.
`protected void` | `preparePainting()` This method is used by PDFDocumentGraphics2D to prepare a new page if necessary.
`void` | `processPathIterator(java.awt.geom.PathIterator iter)` Processes a path iterator generating the necessary painting operations.
`void` | `setGraphicContext(org.apache.xmlgraphics.java2d.GraphicContext c)` Set the Graphics context.
`void` | `setOutputStream(java.io.OutputStream os)` Set the output stream that this PDF document is being drawn to.
`void` | `setOverrideFontState(Font infont)` Set the override font state for drawing text.
`void` | `setPaintingState(PDFPaintingState state)` Set the PDF state to use when starting to draw into the PDF graphics.
`void` | `setXORMode(java.awt.Color c1)` Sets the paint mode of this graphics context to alternate between this graphics context's current color and the new specified color.
`protected void` | `updateCurrentFont(Font font)` Updates the currently selected font.
`protected void` | `writeClip(java.awt.Shape s)` Set the clipping shape for future PDF drawing in the current graphics state.

Methods inherited from class org.apache.xmlgraphics.java2d.AbstractGraphics2D
`addRenderingHints, clearRect, clip, clipRect, drawArc, drawGlyphVector, drawImage, drawImage, drawImage, drawImage, drawImage, drawImage, drawLine, drawOval, drawPolygon, drawPolyline, drawRect, drawRoundRect, drawString, drawString, drawString, fillArc, fillOval, fillPolygon, fillRect, fillRoundRect, getBackground, getClip, getClipBounds, getColor, getComposite, getFont, getFontRenderContext, getGraphicContext, getPaint, getRenderingHint, getRenderingHints, getStroke, getTransform, hit, rotate, rotate, scale, setBackground, setClip, setClip, setColor, setComposite, setFont, setPaint, setPaintMode, setRenderingHint, setRenderingHints, setStroke, setTransform, shear, transform, translate, translate`

Methods inherited from class java.awt.Graphics2D
`draw3DRect, fill3DRect`

Methods inherited from class java.awt.Graphics
`create, drawBytes, drawChars, drawPolygon, fillPolygon, finalize, getClipBounds, getClipRect, getFontMetrics, hitClip, toString`

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

Field Detail

### pdfDoc

    protected PDFDocument pdfDoc

  the PDF Document being created

### resourceContext

    protected PDFResourceContext resourceContext

  The current resource context for adding fonts, patterns etc.

### pageRef

    protected java.lang.String pageRef

  The PDF reference of the current page.

### paintingState

    protected PDFPaintingState paintingState

  The PDF painting state

### baseLevel

    protected int baseLevel

  The PDF graphics state level that this svg is being drawn into.

### nativeCount

    protected int nativeCount

  The count of natively handled images added to document so they receive unique keys.

### fontInfo

    protected FontInfo fontInfo

  The current font information.

### ovFontState

    protected Font ovFontState

  The override font state used when drawing text and the font cannot be set using java fonts.

### currentStream

    protected java.io.StringWriter currentStream

  the current stream to add PDF commands to

### currentFontName

    protected java.lang.String currentFontName

  the current (internal) font name

### currentFontSize

    protected float currentFontSize

  the current font size in millipoints

### outputStream

    protected java.io.OutputStream outputStream

  The output stream for the pdf document. If this is set then it can progressively output the pdf document objects to reduce memory. Especially with images.

Constructor Detail

### PDFGraphics2D

    public PDFGraphics2D(boolean textAsShapes,
                         FontInfo fi,
                         PDFDocument doc,
                         PDFResourceContext page,
                         java.lang.String pref,
                         java.lang.String font,
                         float size)

  Create a new PDFGraphics2D with the given pdf document info. This is used to create a Graphics object for use inside an already existing document.

Parameters:
  `textAsShapes` - if true then draw text as shapes
  `fi` - the current font information
  `doc` - the pdf document for creating pdf objects
  `page` - the current resource context or page
  `pref` - the PDF reference of the current page
  `font` - the current font name
  `size` - the current font size

### PDFGraphics2D

    protected PDFGraphics2D(boolean textAsShapes)

  Create a new PDFGraphics2D.

Parameters:
  `textAsShapes` - true if drawing text as shapes

### PDFGraphics2D

    public PDFGraphics2D(PDFGraphics2D g)

  This constructor supports the create method. This is not implemented properly.

Parameters:
  `g` - the PDF graphics to make a copy of

Method Detail

### create

    public java.awt.Graphics create()

  Creates a new `Graphics` object that is a copy of this `Graphics` object.

  Returns:
    a new graphics context that is a copy of this graphics context.

### handleIOException

    protected void handleIOException(java.io.IOException ioe)

  Central handler for IOExceptions for this class.

  Parameters:
    `ioe` - IOException to handle

### preparePainting

    protected void preparePainting()

  This method is used by PDFDocumentGraphics2D to prepare a new page if necessary.

### setPaintingState

    public void setPaintingState(PDFPaintingState state)

  Set the PDF state to use when starting to draw into the PDF graphics.

  Parameters:
    `state` - the PDF state

### setOutputStream

    public void setOutputStream(java.io.OutputStream os)

  Set the output stream that this PDF document is being drawn to. This is so that it can progressively use the PDF document to output data such as images. This results in a significant saving on memory.

  Parameters:
    `os` - the output stream that is being used for the PDF document

### getString

    public java.lang.String getString()

  Get the string containing all the commands written into this Graphics.

  Returns:
    the string containing the PDF markup

### getBuffer

    public java.lang.StringBuffer getBuffer()

  Get the string buffer from the currentStream, containing all the commands written into this Graphics so far.

  Returns:
    the StringBuffer containing the PDF markup

### getPageReference

    public java.lang.String getPageReference()

  Gets the PDF reference of the current page.

  Returns:
    the PDF reference of the current page

### setGraphicContext

    public void setGraphicContext(org.apache.xmlgraphics.java2d.GraphicContext c)

  Set the Graphics context.

  Parameters:
    `c` - the graphics context to use

### setOverrideFontState

    public void setOverrideFontState(Font infont)

  Set the override font state for drawing text. This is used by the PDF text painter so that it can temporarily set the font state when a java font cannot be used. The next drawString will use this font state.

  Parameters:
    `infont` - the font state to use

### getBaseTransform

    protected java.awt.geom.AffineTransform getBaseTransform()

  This is mainly used for shading patterns which use the document-global coordinate system instead of the local one.

  Returns:
    the transformation matrix that established the basic user space for this document

### addLink

    public void addLink(java.awt.geom.Rectangle2D bounds,
                        java.awt.geom.AffineTransform trans,
                        java.lang.String dest,
                        int linkType)

  This is a pdf specific method used to add a link to the pdf document.

  Parameters:
    `bounds` - the bounds of the link in user coordinates
    `trans` - the transform of the current drawing position
    `dest` - the PDF destination
    `linkType` - the type of link, internal or external

### addNativeImage

    public void addNativeImage(org.apache.xmlgraphics.image.loader.Image image,
                               float x,
                               float y,
                               float width,
                               float height)

  Add a natively handled image directly to the PDF document. This is used by the PDFImageElementBridge to draw a natively handled image (like JPEG or CCITT images) directly into the PDF document rather than converting the image into a bitmap and increasing the size.

  Specified by:
    `addNativeImage` in interface `NativeImageHandler`
  Parameters:
    `image` - the image to draw
    `x` - the x position
    `y` - the y position
    `width` - the width to draw the image
    `height` - the height to draw the image

### drawImage

    public boolean drawImage(java.awt.Image img,
                             int x,
                             int y,
                             java.awt.image.ImageObserver observer)

  Draws as much of the specified image as is currently available. The image is drawn with its top-left corner at (x, y) in this graphics context's coordinate space. Transparent pixels in the image do not affect whatever pixels are already there.

  This method returns immediately in all cases, even if the complete image has not yet been loaded, and it has not been dithered and converted for the current output device.

  If the image has not yet been completely loaded, then `drawImage` returns `false`. As more of the image becomes available, the process that draws the image notifies the specified image observer.

  Parameters:
    `img` - the specified image to be drawn.
    `x` - the x coordinate.
    `y` - the y coordinate.
    `observer` - object to be notified as more of the image is converted.
  Returns:
    true if the image was drawn
  See Also:
    `Image`, `ImageObserver`, `ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)`

### drawImage

    public boolean drawImage(java.awt.Image img,
                             int x,
                             int y,
                             int width,
                             int height,
                             java.awt.image.ImageObserver observer)

### dispose

    public void dispose()

  Disposes of this graphics context and releases any system resources that it is using. A `Graphics` object cannot be used after `dispose`has been called.

  When a Java program runs, a large number of `Graphics` objects can be created within a short time frame. Although the finalization process of the garbage collector also disposes of the same system resources, it is preferable to manually free the associated resources by calling this method rather than to rely on a finalization process which may not run to completion for a long period of time.

  Graphics objects which are provided as arguments to the `paint` and `update` methods of components are automatically released by the system when those methods return. For efficiency, programmers should call `dispose` when finished using a `Graphics` object only if it was created directly from a component or another `Graphics` object.

  See Also:
    `Graphics.finalize()`, `Component.paint(java.awt.Graphics)`, `Component.update(java.awt.Graphics)`, `Component.getGraphics()`, `Graphics.create()`

### draw

    public void draw(java.awt.Shape s)

  Strokes the outline of a `Shape` using the settings of the current `Graphics2D` context. The rendering attributes applied include the `Clip`, `Transform`, `Paint`, `Composite` and `Stroke` attributes.

  Parameters:
    `s` - the `Shape` to be rendered
  See Also:
    `AbstractGraphics2D.setStroke(java.awt.Stroke)`, `AbstractGraphics2D.setPaint(java.awt.Paint)`, `Graphics.setColor(java.awt.Color)`, `AbstractGraphics2D.transform(java.awt.geom.AffineTransform)`, `AbstractGraphics2D.setTransform(java.awt.geom.AffineTransform)`, `AbstractGraphics2D.clip(java.awt.Shape)`, `AbstractGraphics2D.setClip(int, int, int, int)`, `AbstractGraphics2D.setComposite(java.awt.Composite)`

### writeClip

    protected void writeClip(java.awt.Shape s)

  Set the clipping shape for future PDF drawing in the current graphics state. This sets creates and writes a clipping shape that will apply to future drawings in the current graphics state.

  Parameters:
    `s` - the clipping shape

### applyColor

    protected void applyColor(java.awt.Color col,
                              boolean fill)

  Apply the java Color to PDF. This converts the java colour to a PDF colour and sets it for the next drawing.

  Parameters:
    `col` - the java colour
    `fill` - true if the colour will be used for filling

### applyPaint

    protected boolean applyPaint(java.awt.Paint paint,
                                 boolean fill)

  Apply the java paint to the PDF. This takes the java paint sets up the appropraite PDF commands for the drawing with that paint. Currently this supports the gradients and patterns from batik.

  Parameters:
    `paint` - the paint to convert to PDF
    `fill` - true if the paint should be set for filling
  Returns:
    true if the paint is handled natively, false if the paint should be rasterized

### applyUnknownPaint

    protected boolean applyUnknownPaint(java.awt.Paint paint,
                                        java.awt.Shape shape)

### applyStroke

    protected void applyStroke(java.awt.Stroke stroke)

  Apply the stroke to the PDF. This takes the java stroke and outputs the appropriate settings to the PDF so that the stroke attributes are handled.

  Parameters:
    `stroke` - the java stroke

### drawRenderedImage

    public void drawRenderedImage(java.awt.image.RenderedImage img,
                                  java.awt.geom.AffineTransform xform)

### drawInnerRenderedImage

    public void drawInnerRenderedImage(java.lang.String key,
                                       java.awt.image.RenderedImage img,
                                       java.awt.geom.AffineTransform xform)

  {@inheritDoc}

### drawRenderableImage

    public void drawRenderableImage(java.awt.image.renderable.RenderableImage img,
                                    java.awt.geom.AffineTransform xform)

### drawString

    public void drawString(java.lang.String s,
                           float x,
                           float y)

  Renders the text specified by the specified `String`, using the current `Font` and `Paint` attributes in the `Graphics2D` context. The baseline of the first character is at position (x, y) in the User Space. The rendering attributes applied include the `Clip`, `Transform`, `Paint`, `Font` and `Composite` attributes. For characters in script systems such as Hebrew and Arabic, the glyphs can be rendered from right to left, in which case the coordinate supplied is the location of the leftmost character on the baseline.

  Parameters:
    `s` - the `String` to be rendered
    `x` - the coordinate where the `String` should be rendered
    `y` - the coordinate where the `String` should be rendered
  See Also:
    `AbstractGraphics2D.setPaint(java.awt.Paint)`, `Graphics.setColor(java.awt.Color)`, `Graphics.setFont(java.awt.Font)`, `AbstractGraphics2D.setTransform(java.awt.geom.AffineTransform)`, `AbstractGraphics2D.setComposite(java.awt.Composite)`, `AbstractGraphics2D.setClip(int, int, int, int)`

### applyAlpha

    protected void applyAlpha(int fillAlpha,
                              int strokeAlpha)

  Applies the given alpha values for filling and stroking.

  Parameters:
    `fillAlpha` - A value between 0 and 255 (=OPAQUE) for filling
    `strokeAlpha` - A value between 0 and 255 (=OPAQUE) for stroking

### updateCurrentFont

    protected void updateCurrentFont(Font font)

  Updates the currently selected font.

  Parameters:
    `font` - the new font to use

### getInternalFontForAWTFont

    protected Font getInternalFontForAWTFont(java.awt.Font awtFont)

  Deprecated. use FontInfo.getFontInstanceForAWTFont(java.awt.Font awtFont) instead

  Returns a suitable internal font given an AWT Font instance.

  Parameters:
    `awtFont` - the AWT font
  Returns:
    the internal Font

### isMultiByteFont

    protected boolean isMultiByteFont(java.lang.String name)

  Determines whether the font with the given name is a multi-byte font.

  Parameters:
    `name` - the name of the font
  Returns:
    true if it's a multi-byte font

### fill

    public void fill(java.awt.Shape s)

  Fills the interior of a `Shape` using the settings of the `Graphics2D` context. The rendering attributes applied include the `Clip`, `Transform`, `Paint`, and `Composite`.

  Parameters:
    `s` - the `Shape` to be filled
  See Also:
    `AbstractGraphics2D.setPaint(java.awt.Paint)`, `Graphics.setColor(java.awt.Color)`, `AbstractGraphics2D.transform(java.awt.geom.AffineTransform)`, `AbstractGraphics2D.setTransform(java.awt.geom.AffineTransform)`, `AbstractGraphics2D.setComposite(java.awt.Composite)`, `AbstractGraphics2D.clip(java.awt.Shape)`, `AbstractGraphics2D.setClip(int, int, int, int)`

### checkTransparencyAllowed

    protected void checkTransparencyAllowed()

  Checks whether the use of transparency is allowed.

### processPathIterator

    public void processPathIterator(java.awt.geom.PathIterator iter)

  Processes a path iterator generating the necessary painting operations.

  Parameters:
    `iter` - PathIterator to process

### doDrawing

    protected void doDrawing(boolean fill,
                             boolean stroke,
                             boolean nonzero)

  Do the PDF drawing command. This does the PDF drawing command according to fill stroke and winding rule.

  Parameters:
    `fill` - true if filling the path
    `stroke` - true if stroking the path
    `nonzero` - true if using the non-zero winding rule

### getDeviceConfiguration

    public java.awt.GraphicsConfiguration getDeviceConfiguration()

  Returns the device configuration associated with this `Graphics2D`.

  Returns:
    the PDF graphics configuration

### getFontMetrics

    public java.awt.FontMetrics getFontMetrics(java.awt.Font f)

  Gets the font metrics for the specified font.

  Parameters:
    `f` - the specified font
  Returns:
    the font metrics for the specified font.
  See Also:
    `Graphics.getFont()`, `FontMetrics`, `Graphics.getFontMetrics()`

### setXORMode

    public void setXORMode(java.awt.Color c1)

  Sets the paint mode of this graphics context to alternate between this graphics context's current color and the new specified color. This specifies that logical pixel operations are performed in the XOR mode, which alternates pixels between the current color and a specified XOR color.

  When drawing operations are performed, pixels which are the current color are changed to the specified color, and vice versa.

  Pixels that are of colors other than those two colors are changed in an unpredictable but reversible manner; if the same figure is drawn twice, then all pixels are restored to their original values.

  Parameters:
    `c1` - the XOR alternation color

### copyArea

    public void copyArea(int x,
                         int y,
                         int width,
                         int height,
                         int dx,
                         int dy)

  Copies an area of the component by a distance specified by `dx` and `dy`. From the point specified by `x` and `y`, this method copies downwards and to the right. To copy an area of the component to the left or upwards, specify a negative value for `dx` or `dy`. If a portion of the source rectangle lies outside the bounds of the component, or is obscured by another window or component, `copyArea` will be unable to copy the associated pixels. The area that is omitted can be refreshed by calling the component's `paint` method.

  Parameters:
    `x` - the x coordinate of the source rectangle.
    `y` - the y coordinate of the source rectangle.
    `width` - the width of the source rectangle.
    `height` - the height of the source rectangle.
    `dx` - the horizontal distance to copy the pixels.
    `dy` - the vertical distance to copy the pixels.

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