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/*
* $Id$
* Copyright (C) 2001-2002 The Apache Software Foundation. All rights reserved.
* For details on use and redistribution please refer to the
* LICENSE file included with these sources.
*/
package org.apache.fop.svg;
import org.apache.fop.pdf.PDFDocument;
import org.apache.fop.pdf.PDFPage;
import org.apache.fop.pdf.PDFStream;
import org.apache.fop.pdf.PDFState;
import org.apache.fop.pdf.PDFNumber;
import org.apache.fop.pdf.PDFResources;
import org.apache.fop.pdf.PDFColor;
import org.apache.fop.pdf.PDFAnnotList;
import org.apache.fop.render.pdf.FontSetup;
import org.apache.fop.layout.FontInfo;
import java.awt.Graphics;
import java.awt.Font;
import java.awt.Color;
import java.awt.Shape;
import java.awt.font.FontRenderContext;
import java.awt.font.GlyphVector;
import java.awt.geom.AffineTransform;
import java.io.OutputStream;
import java.io.IOException;
/**
* This class is a wrapper for the <tt>PDFGraphics2D</tt> that
* is used to create a full document around the pdf rendering from
* <tt>PDFGraphics2D</tt>.
*
* @author <a href="mailto:keiron@aftexsw.com">Keiron Liddle</a>
* @version $Id$
* @see org.apache.fop.svg.PDFGraphics2D
*/
public class PDFDocumentGraphics2D extends PDFGraphics2D {
private PDFPage currentPage;
private PDFStream pdfStream;
private int width;
private int height;
/**
* Create a new PDFDocumentGraphics2D.
* This is used to create a new pdf document, the height,
* width and output stream can be setup later.
* For use by the transcoder which needs font information
* for the bridge before the document size is known.
* The resulting document is written to the stream after rendering.
*
* @param textAsShapes set this to true so that text will be rendered
* using curves and not the font.
*/
PDFDocumentGraphics2D(boolean textAsShapes) {
super(textAsShapes);
if (!textAsShapes) {
fontInfo = new FontInfo();
FontSetup.setup(fontInfo, null);
//FontState fontState = new FontState("Helvetica", "normal",
// FontInfo.NORMAL, 12, 0);
}
this.pdfDoc = new PDFDocument("FOP SVG Renderer");
graphicsState = new PDFState();
currentFontName = "";
currentFontSize = 0;
pdfStream = this.pdfDoc.makeStream(PDFStream.CONTENT_FILTER, false);
}
/**
* Setup the document.
* @param stream the output stream to write the document
* @param width the width of the page
* @param height the height of the page
* @throws IOException an io exception if there is a problem
* writing to the output stream
*/
public void setupDocument(OutputStream stream, int width, int height) throws IOException {
this.width = width;
this.height = height;
PDFResources pdfResources = this.pdfDoc.getResources();
currentPage = this.pdfDoc.makePage(pdfResources,
width, height);
resourceContext = currentPage;
pageRef = currentPage.referencePDF();
currentStream.write("1 0 0 -1 0 " + height + " cm\n");
graphicsState.setTransform(new AffineTransform(1.0, 0.0, 0.0, -1.0, 0.0, (double)height));
pdfDoc.outputHeader(stream);
setOutputStream(stream);
}
/**
* Create a new PDFDocumentGraphics2D.
* This is used to create a new pdf document of the given height
* and width.
* The resulting document is written to the stream after rendering.
*
* @param textAsShapes set this to true so that text will be rendered
* using curves and not the font.
* @param stream the stream that the final document should be written to.
* @param width the width of the document
* @param height the height of the document
* @throws IOException an io exception if there is a problem
* writing to the output stream
*/
public PDFDocumentGraphics2D(boolean textAsShapes, OutputStream stream,
int width, int height) throws IOException {
this(textAsShapes);
setupDocument(stream, width, height);
}
/**
* Get the font info for this pdf document.
* @return the font information
*/
public FontInfo getFontInfo() {
return fontInfo;
}
/**
* Get the pdf document created by this class.
* @return the pdf document
*/
public PDFDocument getPDFDocument() {
return this.pdfDoc;
}
/**
* Set the dimensions of the svg document that will be drawn.
* This is useful if the dimensions of the svg document are different
* from the pdf document that is to be created.
* The result is scaled so that the svg fits correctly inside the
* pdf document.
* @param w the width of the page
* @param h the height of the page
*/
public void setSVGDimension(float w, float h) {
currentStream.write("" + PDFNumber.doubleOut(width / w) + " 0 0 "
+ PDFNumber.doubleOut(height / h) + " 0 0 cm\n");
}
/**
* Set the background of the pdf document.
* This is used to set the background for the pdf document
* Rather than leaving it as the default white.
* @param col the background colour to fill
*/
public void setBackgroundColor(Color col) {
Color c = col;
PDFColor currentColour = new PDFColor(c.getRed(), c.getGreen(), c.getBlue());
currentStream.write("q\n");
currentStream.write(currentColour.getColorSpaceOut(true));
currentStream.write("0 0 " + width + " " + height + " re\n");
currentStream.write("f\n");
currentStream.write("Q\n");
}
/**
* The rendering process has finished.
* This should be called after the rendering has completed as there is
* no other indication it is complete.
* This will then write the results to the output stream.
* @throws IOException an io exception if there is a problem
* writing to the output stream
*/
public void finish() throws IOException {
// restorePDFState();
pdfStream.add(getString());
this.pdfDoc.addStream(pdfStream);
currentPage.setContents(pdfStream);
PDFAnnotList annots = currentPage.getAnnotations();
if (annots != null) {
this.pdfDoc.addAnnotList(annots);
}
this.pdfDoc.addPage(currentPage);
if (fontInfo != null) {
FontSetup.addToResources(pdfDoc, pdfDoc.getResources(), fontInfo);
}
this.pdfDoc.output(outputStream);
pdfDoc.outputTrailer(outputStream);
outputStream.flush();
}
/**
* This constructor supports the create method
* @param g the pdf document graphics to make a copy of
*/
public PDFDocumentGraphics2D(PDFDocumentGraphics2D g) {
super(g);
}
/**
* Creates a new <code>Graphics</code> object that is
* a copy of this <code>Graphics</code> object.
* @return a new graphics context that is a copy of
* this graphics context.
*/
public Graphics create() {
return new PDFDocumentGraphics2D(this);
}
/**
* Draw a string to the pdf document.
* This either draws the string directly or if drawing text as
* shapes it converts the string into shapes and draws that.
* @param s the string to draw
* @param x the x position
* @param y the y position
*/
public void drawString(String s, float x, float y) {
if (super.textAsShapes) {
Font font = super.getFont();
FontRenderContext frc = super.getFontRenderContext();
GlyphVector gv = font.createGlyphVector(frc, s);
Shape glyphOutline = gv.getOutline(x, y);
super.fill(glyphOutline);
} else {
super.drawString(s, x, y);
}
}
}
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