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- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.svg;
-
- import org.apache.fop.Version;
- import org.apache.fop.pdf.PDFDocument;
- import org.apache.fop.pdf.PDFFilterList;
- 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.fonts.FontInfo;
- import org.apache.fop.fonts.FontSetup;
-
- 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;
- import java.io.StringWriter;
-
- /**
- * 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 PDFContext pdfContext;
-
- private int width;
- private int height;
-
- //for SVG scaling
- private float svgWidth;
- private float svgHeight;
-
- /** Normal PDF resolution (72dpi) */
- public static final int NORMAL_PDF_RESOLUTION = 72;
- /** Default device resolution (300dpi is a resonable quality for most purposes) */
- public static final int DEFAULT_NATIVE_DPI = 300;
-
- /**
- * The device resolution may be different from the normal target resolution. See
- * http://issues.apache.org/bugzilla/show_bug.cgi?id=37305
- */
- private float deviceDPI = DEFAULT_NATIVE_DPI;
-
- /** Initial clipping area, used to restore to original setting
- * when a new page is started. */
- protected Shape initialClip;
-
- /**
- * Initial transformation matrix, used to restore to original
- * setting when a new page is started.
- */
- protected AffineTransform initialTransform;
-
- /**
- * 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.
- */
- public PDFDocumentGraphics2D(boolean textAsShapes) {
- super(textAsShapes);
-
- this.pdfDoc = new PDFDocument("Apache FOP Version " + Version.getVersion()
- + ": PDFDocumentGraphics2D");
- this.pdfContext = new PDFContext();
- }
-
- /**
- * 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);
- }
-
- /**
- * Create a new PDFDocumentGraphics2D.
- * This is used to create a new pdf document.
- * 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.
- * This constructor is Avalon-style.
- */
- public PDFDocumentGraphics2D() {
- this(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;
-
- pdfDoc.outputHeader(stream);
- setOutputStream(stream);
- }
-
- /**
- * Setup a default FontInfo instance if none has been setup before.
- */
- public void setupDefaultFontInfo() {
- if (fontInfo == null) {
- //Default minimal fonts
- FontInfo fontInfo = new FontInfo();
- FontSetup.setup(fontInfo, null, null);
- setFontInfo(fontInfo);
- }
- }
-
- /**
- * Set the device resolution for rendering. Will take effect at the
- * start of the next page.
- * @param deviceDPI the device resolution (in dpi)
- */
- public void setDeviceDPI(float deviceDPI) {
- this.deviceDPI = deviceDPI;
- }
-
- /**
- * @return the device resolution (in dpi) for rendering.
- */
- public float getDeviceDPI() {
- return deviceDPI;
- }
-
- /**
- * Sets the font info for this PDF document.
- * @param fontInfo the font info object with all the fonts
- */
- public void setFontInfo(FontInfo fontInfo) {
- this.fontInfo = fontInfo;
- }
-
- /**
- * 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;
- }
-
- /**
- * Return the PDFContext for this instance.
- * @return the PDFContext
- */
- public PDFContext getPDFContext() {
- return this.pdfContext;
- }
-
- /**
- * 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) {
- this.svgWidth = w;
- this.svgHeight = h;
- }
-
- /**
- * 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");
- }
-
- /**
- * Is called to prepare the PDFDocumentGraphics2D for the next page to be painted. Basically,
- * this closes the current page. A new page is prepared as soon as painting starts.
- */
- public void nextPage() {
- closePage();
- }
-
- /**
- * Closes the current page and adds it to the PDF file.
- */
- protected void closePage() {
- if (!pdfContext.isPagePending()) {
- return; //ignore
- }
- //Finish page
- PDFStream pdfStream = this.pdfDoc.getFactory().makeStream(
- PDFFilterList.CONTENT_FILTER, false);
- pdfStream.add(getString());
- currentStream = null;
- this.pdfDoc.registerObject(pdfStream);
- pdfContext.getCurrentPage().setContents(pdfStream);
- PDFAnnotList annots = pdfContext.getCurrentPage().getAnnotations();
- if (annots != null) {
- this.pdfDoc.addObject(annots);
- }
- this.pdfDoc.addObject(pdfContext.getCurrentPage());
- pdfContext.clearCurrentPage();
- }
-
- /** {@inheritDoc} */
- protected void preparePainting() {
- if (pdfContext.isPagePending()) {
- return;
- }
- //Setup default font info if no more font configuration has been done by the user.
- if (!this.textAsShapes && getFontInfo() == null) {
- setupDefaultFontInfo();
- }
- try {
- startPage();
- } catch (IOException ioe) {
- handleIOException(ioe);
- }
- }
-
- /**
- * Called to prepare a new page
- * @throws IOException if starting the new page fails due to I/O errors.
- */
- protected void startPage() throws IOException {
- if (pdfContext.isPagePending()) {
- throw new IllegalStateException("Close page first before starting another");
- }
- //Start page
- graphicsState = new PDFState();
- if (this.initialTransform == null) {
- //Save initial transformation matrix
- this.initialTransform = getTransform();
- this.initialClip = getClip();
- } else {
- //Reset transformation matrix
- setTransform(this.initialTransform);
- setClip(this.initialClip);
- }
-
- currentFontName = "";
- currentFontSize = 0;
-
- if (currentStream == null) {
- currentStream = new StringWriter();
- }
-
- PDFResources pdfResources = this.pdfDoc.getResources();
- PDFPage page = this.pdfDoc.getFactory().makePage(pdfResources,
- width, height);
- resourceContext = page;
- pdfContext.setCurrentPage(page);
- pageRef = page.referencePDF();
-
- AffineTransform at = new AffineTransform(1.0, 0.0, 0.0, -1.0,
- 0.0, (double)height);
- currentStream.write("1 0 0 -1 0 " + height + " cm\n");
- if (svgWidth != 0) {
- double scaleX = width / svgWidth;
- double scaleY = height / svgHeight;
- at.scale(scaleX, scaleY);
- currentStream.write("" + PDFNumber.doubleOut(scaleX) + " 0 0 "
- + PDFNumber.doubleOut(scaleY) + " 0 0 cm\n");
- }
- if (deviceDPI != NORMAL_PDF_RESOLUTION) {
- double s = NORMAL_PDF_RESOLUTION / deviceDPI;
- at.scale(s, s);
- currentStream.write("" + PDFNumber.doubleOut(s) + " 0 0 "
- + PDFNumber.doubleOut(s) + " 0 0 cm\n");
-
- scale(1 / s, 1 / s);
- }
- // Remember the transform we installed.
- graphicsState.concatenate(at);
-
- pdfContext.increasePageCount();
- }
-
-
- /**
- * 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();
-
- closePage();
- if (fontInfo != null) {
- pdfDoc.getResources().addFonts(pdfDoc, 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);
- this.pdfContext = g.pdfContext;
- this.width = g.width;
- this.height = g.height;
- this.svgWidth = g.svgWidth;
- this.svgHeight = g.svgHeight;
- }
-
- /**
- * 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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