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- /*
- * $Id$
- * ============================================================================
- * The Apache Software License, Version 1.1
- * ============================================================================
- *
- * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modifica-
- * tion, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * 3. The end-user documentation included with the redistribution, if any, must
- * include the following acknowledgment: "This product includes software
- * developed by the Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself, if
- * and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "FOP" and "Apache Software Foundation" must not be used to
- * endorse or promote products derived from this software without prior
- * written permission. For written permission, please contact
- * apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache", nor may
- * "Apache" appear in their name, without prior written permission of the
- * Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
- * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * ============================================================================
- *
- * This software consists of voluntary contributions made by many individuals
- * on behalf of the Apache Software Foundation and was originally created by
- * James Tauber <jtauber@jtauber.com>. For more information on the Apache
- * Software Foundation, please see <http://www.apache.org/>.
- */
- package org.apache.fop.render.ps;
-
- //Java
- import java.awt.Graphics;
- import java.awt.Color;
- import java.awt.Shape;
- import java.awt.geom.AffineTransform;
- import java.io.OutputStream;
- import java.io.IOException;
-
- //FOP
- import org.apache.fop.apps.Document;
- import org.apache.fop.fonts.Font;
- import org.apache.fop.fonts.FontSetup;
-
- /**
- * This class is a wrapper for the <tt>PSGraphics2D</tt> that
- * is used to create a full document around the PostScript rendering from
- * <tt>PSGraphics2D</tt>.
- *
- * @author <a href="mailto:keiron@aftexsw.com">Keiron Liddle</a>
- * @author <a href="mailto:jeremias@apache.org">Jeremias Maerki</a>
- * @version $Id$
- * @see org.apache.fop.render.ps.PSGraphics2D
- */
- public abstract class AbstractPSDocumentGraphics2D extends PSGraphics2D {
-
- protected static final Integer ZERO = new Integer(0);
-
- protected int width;
- protected int height;
-
- protected int pagecount;
- protected boolean pagePending;
-
- protected Shape initialClip;
- protected AffineTransform initialTransform;
-
-
- /**
- * Create a new AbstractPSDocumentGraphics2D.
- * This is used to create a new PostScript 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.
- */
- AbstractPSDocumentGraphics2D(boolean textAsShapes) {
- super(textAsShapes);
-
- if (!textAsShapes) {
- this.document = new Document(null);
- FontSetup.setup(this.document, null);
- }
- }
-
- /**
- * 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;
- this.pagecount = 0;
- this.pagePending = false;
-
- //Setup for PostScript generation
- setPSGenerator(new PSGenerator(stream));
-
- writeFileHeader();
- }
-
- protected abstract void writeFileHeader() throws IOException;
-
- /**
- * Create a new AbstractPSDocumentGraphics2D.
- * This is used to create a new PostScript 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 AbstractPSDocumentGraphics2D(boolean textAsShapes, OutputStream stream,
- int width, int height) throws IOException {
- this(textAsShapes);
- setupDocument(stream, width, height);
- }
-
- /**
- * Get the context document.
- * @return the context document
- */
- public Document getDocument() {
- return this.document;
- }
-
- /**
- * 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 PostScript document that is to be created.
- * The result is scaled so that the SVG fits correctly inside the
- * PostScript document.
- * @param w the width of the page
- * @param h the height of the page
- * @throws IOException in case of an I/O problem
- */
- public void setSVGDimension(float w, float h) throws IOException {
- if (w != this.width || h != this.height) {
- gen.concatMatrix(width / w, 0, 0, height / h, 0, 0);
- }
- }
-
- /**
- * Set the background of the PostScript document.
- * This is used to set the background for the PostScript document
- * Rather than leaving it as the default white.
- * @param col the background colour to fill
- */
- public void setBackgroundColor(Color col) {
- /**(todo) Implement this */
- /*
- 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");
- */
- }
-
- public int getPageCount() {
- return this.pagecount;
- }
-
- public void nextPage() throws IOException {
- closePage();
- }
-
- protected void closePage() throws IOException {
- if (!this.pagePending) {
- return; //ignore
- }
- //Finish page
- writePageTrailer();
- this.pagePending = false;
- }
-
- /**
- * Writes the page header for a page.
- * @throws IOException In case an I/O error occurs
- */
- protected abstract void writePageHeader() throws IOException;
-
- /**
- * Writes the page trailer for a page.
- * @throws IOException In case an I/O error occurs
- */
- protected abstract void writePageTrailer() throws IOException;
-
-
- /** {@inheritDoc} */
- protected void preparePainting() {
- if (this.pagePending) {
- return;
- }
- try {
- startPage();
- } catch (IOException ioe) {
- handleIOException(ioe);
- }
- }
-
- protected void startPage() throws IOException {
- if (this.pagePending) {
- throw new IllegalStateException("Close page first before starting another");
- }
- //Start page
- this.pagecount++;
-
- if (this.initialTransform == null) {
- //Save initial transformation matrix
- this.initialTransform = getTransform();
- this.initialClip = getClip();
- } else {
- //Reset transformation matrix
- setTransform(this.initialTransform);
- setClip(this.initialClip);
- }
-
- writePageHeader();
- gen.writeln("0.001 0.001 scale");
- gen.concatMatrix(1, 0, 0, -1, 0, this.height * 1000);
- gen.writeDSCComment(DSCConstants.END_PAGE_SETUP);
- this.pagePending = true;
- }
-
- /**
- * 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 {
- if (this.pagePending) {
- closePage();
- }
-
- //Finish document
- gen.writeDSCComment(DSCConstants.TRAILER);
- gen.writeDSCComment(DSCConstants.PAGES, new Integer(this.pagecount));
- gen.writeDSCComment(DSCConstants.EOF);
- gen.flush();
- }
-
- /**
- * This constructor supports the create method
- * @param g the PostScript document graphics to make a copy of
- */
- public AbstractPSDocumentGraphics2D(AbstractPSDocumentGraphics2D g) {
- super(g);
- }
-
-
- }
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