Package org.apache.fop.render.ps

Class PSPainter

java.lang.Object
org.apache.fop.render.intermediate.AbstractIFPainter<PSDocumentHandler>
org.apache.fop.render.ps.PSPainter
All Implemented Interfaces:
IFPainter
public class PSPainter extends AbstractIFPainter<PSDocumentHandler>
IFPainter implementation that produces PostScript.

  • Constructor Details

    • PSPainter

      public PSPainter(PSDocumentHandler documentHandler)
      Default constructor.
      Parameters:
      documentHandler - the parent document handler

    • PSPainter

      protected PSPainter(PSDocumentHandler documentHandler, IFState state)

  • Method Details

    • startViewport

      public void startViewport(AffineTransform transform, Dimension size, Rectangle clipRect) throws IFException
      Starts a new viewport, establishing a new coordinate system. A viewport has a size and can optionally be clipped. Corresponds to SVG's svg element.
      Parameters:
      transform - the transformation matrix establishing the new coordinate system
      size - the size of the viewport
      clipRect - the clipping rectangle (may be null)
      Throws:
      IFException - if an error occurs while handling this element

    • endViewport

      public void endViewport() throws IFException
      Ends the current viewport and restores the previous coordinate system.
      Throws:
      IFException - if an error occurs while handling this element

    • startGroup

      public void startGroup(AffineTransform transform, String layer) throws IFException
      Starts a new group of graphical elements. Corresponds to SVG's g element.
      Parameters:
      transform - the transformation matrix establishing the new coordinate system
      layer - an optional layer label (or null if none)
      Throws:
      IFException - if an error occurs while handling this element

    • endGroup

      public void endGroup() throws IFException
      Ends the current group and restores the previous coordinate system (and layer).
      Throws:
      IFException - if an error occurs while handling this element

    • createDefaultImageProcessingHints

      protected Map createDefaultImageProcessingHints(org.apache.xmlgraphics.image.loader.ImageSessionContext sessionContext)
      Creates the default map of processing hints for the image loading framework.
      Overrides:
      createDefaultImageProcessingHints in class AbstractIFPainter<PSDocumentHandler>
      Parameters:
      sessionContext - the session context for access to resolution information
      Returns:
      the default processing hints

    • createRenderingContext

      protected RenderingContext createRenderingContext()
      Creates a new RenderingContext instance.
      Specified by:
      createRenderingContext in class AbstractIFPainter<PSDocumentHandler>
      Returns:
      the new rendering context.

    • drawImageUsingImageHandler

      protected void drawImageUsingImageHandler(org.apache.xmlgraphics.image.loader.ImageInfo info, Rectangle rect) throws org.apache.xmlgraphics.image.loader.ImageException, IOException
      Loads a preloaded image and draws it using a suitable image handler.
      Overrides:
      drawImageUsingImageHandler in class AbstractIFPainter<PSDocumentHandler>
      Parameters:
      info - the information object of the preloaded image
      rect - the rectangle in which to paint the image
      Throws:
      org.apache.xmlgraphics.image.loader.ImageException - if there's an error while processing the image
      IOException - if there's an I/O error while loading the image

    • drawImage

      public void drawImage(String uri, Rectangle rect) throws IFException
      Draws an image identified by a URI inside a given rectangle. This is the equivalent to an fo:external-graphic in XSL-FO.
      Parameters:
      uri - the image's URI
      rect - the rectangle in which the image shall be painted
      Throws:
      IFException - if an error occurs while handling this event

    • drawImage

      public void drawImage(Document doc, Rectangle rect) throws IFException
      Draws an image (represented by a DOM document) inside a given rectangle. This is the equivalent to an fo:instream-foreign-object in XSL-FO.
      Parameters:
      doc - the DOM document containing the foreign object
      rect - the rectangle in which the image shall be painted
      Throws:
      IFException - if an error occurs while handling this event

    • clipRect

      public void clipRect(Rectangle rect) throws IFException
      Restricts the current clipping region with the given rectangle.
      Parameters:
      rect - the rectangle's coordinates and extent
      Throws:
      IFException - if an error occurs while handling this event

    • clipBackground

      public void clipBackground(Rectangle rect, BorderProps bpsBefore, BorderProps bpsAfter, BorderProps bpsStart, BorderProps bpsEnd) throws IFException
      Restricts the current clipping region to the inner border.
      Parameters:
      rect - the rectangle's coordinates and extent
      bpsBefore - the border segment on the before-side (top)
      bpsAfter - the border segment on the after-side (bottom)
      bpsStart - the border segment on the start-side (left)
      bpsEnd - the border segment on the end-side (right)
      Throws:
      IFException - if an error occurs while handling this event

    • fillRect

      public void fillRect(Rectangle rect, Paint fill) throws IFException
      Fills a rectangular area.
      Parameters:
      rect - the rectangle's coordinates and extent
      fill - the fill paint
      Throws:
      IFException - if an error occurs while handling this event

    • drawBorderRect

      public void drawBorderRect(Rectangle rect, BorderProps top, BorderProps bottom, BorderProps left, BorderProps right, Color innerBackgroundColor) throws IFException
      Draws a border rectangle. The border segments are specified through BorderProps instances.
      Specified by:
      drawBorderRect in interface IFPainter
      Overrides:
      drawBorderRect in class AbstractIFPainter<PSDocumentHandler>
      Parameters:
      rect - the rectangle's coordinates and extent
      top - the border segment on the top edge
      bottom - the border segment on the bottom edge
      left - the border segment on the left edge
      right - the border segment on the right edge
      innerBackgroundColor - the color of the inner background
      Throws:
      IFException - if an error occurs while handling this event

    • drawLine

      public void drawLine(Point start, Point end, int width, Color color, RuleStyle style) throws IFException
      Draws a line. NOTE: Currently, only horizontal lines are implemented!
      Specified by:
      drawLine in interface IFPainter
      Overrides:
      drawLine in class AbstractIFPainter<PSDocumentHandler>
      Parameters:
      start - the start point of the line
      end - the end point of the line
      width - the line width
      color - the line color
      style - the line style (using the Constants.EN_* constants for the rule-style property)
      Throws:
      IFException - if an error occurs while handling this event

    • saveGraphicsState

      protected void saveGraphicsState() throws IOException
      Saves the graphics state of the rendering engine.
      Throws:
      IOException - if an I/O error occurs

    • restoreGraphicsState

      protected void restoreGraphicsState() throws IOException
      Restores the last graphics state of the rendering engine.
      Throws:
      IOException - if an I/O error occurs

    • beginTextObject

      protected void beginTextObject() throws IOException
      Indicates the beginning of a text object.
      Throws:
      IOException - if an I/O error occurs

    • endTextObject

      protected void endTextObject() throws IOException
      Indicates the end of a text object.
      Throws:
      IOException - if an I/O error occurs

    • drawText

      public void drawText(int x, int y, int letterSpacing, int wordSpacing, int[][] dp, String text) throws IFException
      Draws text. The initial coordinates (x and y) point to the starting point at the normal baseline of the font. The parameters letterSpacing, wordSpacing and the array dx are optional and can be used to influence character positioning (for example, for kerning).
      Parameters:
      x - X-coordinate of the starting point of the text
      y - Y-coordinate of the starting point of the text
      letterSpacing - additional spacing between characters (may be 0)
      wordSpacing - additional spacing between words (may be 0)
      dp - an array of 4-tuples, expressing [X,Y] placment adjustments and [X,Y] advancement adjustments, in that order (may be null); if not null, then adjustments.length must be the same as text.length()
      text - the text
      Throws:
      IFException - if an error occurs while handling this event