/*
* 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 java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.Image;
import java.awt.Paint;
import java.awt.PaintContext;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.color.ColorSpace;
import java.awt.geom.AffineTransform;
import java.awt.geom.PathIterator;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.DataBuffer;
import java.awt.image.DirectColorModel;
import java.awt.image.ImageObserver;
import java.awt.image.Raster;
import java.awt.image.RenderedImage;
import java.awt.image.WritableRaster;
import java.awt.image.renderable.RenderableImage;
import java.io.IOException;
import java.io.OutputStream;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.batik.ext.awt.LinearGradientPaint;
import org.apache.batik.ext.awt.MultipleGradientPaint;
import org.apache.batik.ext.awt.RadialGradientPaint;
import org.apache.batik.ext.awt.RenderingHintsKeyExt;
import org.apache.batik.gvt.GraphicsNode;
import org.apache.batik.gvt.PatternPaint;
import org.apache.xmlgraphics.image.GraphicsConstants;
import org.apache.xmlgraphics.image.loader.ImageInfo;
import org.apache.xmlgraphics.image.loader.ImageSize;
import org.apache.xmlgraphics.image.loader.impl.ImageRawCCITTFax;
import org.apache.xmlgraphics.image.loader.impl.ImageRawJPEG;
import org.apache.xmlgraphics.image.loader.impl.ImageRendered;
import org.apache.xmlgraphics.java2d.AbstractGraphics2D;
import org.apache.xmlgraphics.java2d.GraphicContext;
import org.apache.xmlgraphics.java2d.GraphicsConfigurationWithTransparency;
import org.apache.fop.fonts.Font;
import org.apache.fop.fonts.FontInfo;
import org.apache.fop.fonts.FontSetup;
import org.apache.fop.pdf.BitmapImage;
import org.apache.fop.pdf.PDFAnnotList;
import org.apache.fop.pdf.PDFColor;
import org.apache.fop.pdf.PDFColorHandler;
import org.apache.fop.pdf.PDFConformanceException;
import org.apache.fop.pdf.PDFDeviceColorSpace;
import org.apache.fop.pdf.PDFDocument;
import org.apache.fop.pdf.PDFFunction;
import org.apache.fop.pdf.PDFGState;
import org.apache.fop.pdf.PDFImage;
import org.apache.fop.pdf.PDFImageXObject;
import org.apache.fop.pdf.PDFLink;
import org.apache.fop.pdf.PDFNumber;
import org.apache.fop.pdf.PDFPaintingState;
import org.apache.fop.pdf.PDFPattern;
import org.apache.fop.pdf.PDFReference;
import org.apache.fop.pdf.PDFResourceContext;
import org.apache.fop.pdf.PDFResources;
import org.apache.fop.pdf.PDFShading;
import org.apache.fop.pdf.PDFText;
import org.apache.fop.pdf.PDFXObject;
import org.apache.fop.render.gradient.Function;
import org.apache.fop.render.gradient.GradientMaker;
import org.apache.fop.render.gradient.Pattern;
import org.apache.fop.render.gradient.Shading;
import org.apache.fop.render.pdf.ImageRawCCITTFaxAdapter;
import org.apache.fop.render.pdf.ImageRawJPEGAdapter;
import org.apache.fop.render.pdf.ImageRenderedAdapter;
/**
* <p>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.</p>
*
* <p>This work was authored by Keiron Liddle (keiron@aftexsw.com).</p>
*
* @see org.apache.batik.ext.awt.g2d.AbstractGraphics2D
*/
public class PDFGraphics2D extends AbstractGraphics2D implements NativeImageHandler {
private static final AffineTransform IDENTITY_TRANSFORM = new AffineTransform();
/** The number of decimal places. */
private static final int DEC = 8;
/** Convenience constant for full opacity */
static final int OPAQUE = 255;
/**
* the PDF Document being created
*/
protected PDFDocument pdfDoc;
/**
* The current resource context for adding fonts, patterns etc.
*/
protected PDFResourceContext resourceContext;
/**
* The PDF reference of the current page.
*/
protected PDFReference pageRef;
/**
* The PDF painting state
*/
protected PDFPaintingState paintingState;
/** the PDF color handler */
protected PDFColorHandler colorHandler;
/**
* The PDF graphics state level that this svg is being drawn into.
*/
protected int baseLevel;
/**
* The count of natively handled images added to document so they receive
* unique keys.
*/
protected int nativeCount;
/**
* The current font information.
*/
protected FontInfo fontInfo;
/**
* The override font state used when drawing text and the font cannot be
* set using java fonts.
*/
protected Font ovFontState;
/**
* the current stream to add PDF commands to
*/
protected StringWriter currentStream = new StringWriter();
/**
* the current (internal) font name
*/
protected String currentFontName;
/**
* the current font size in millipoints
*/
protected float currentFontSize;
/**
* 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.
*/
protected OutputStream outputStream;
private TransparencyIgnoredEventListener transparencyIgnoredEventListener;
/**
* May be used to give proper feedback to the user when a particular PDF profile is
* being used that disallows transparency.
*/
public interface TransparencyIgnoredEventListener {
void transparencyIgnored(Object pdfProfile);
}
/**
* 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.
*
* @param textAsShapes if true then draw text as shapes
* @param fi the current font information
* @param doc the pdf document for creating pdf objects
* @param page the current resource context or page
* @param pref the PDF reference of the current page
* @param font the current font name
* @param size the current font size
*/
public PDFGraphics2D(boolean textAsShapes, FontInfo fi, PDFDocument doc,
PDFResourceContext page, PDFReference pref, String font, float size,
TransparencyIgnoredEventListener listener) {
this(textAsShapes);
pdfDoc = doc;
this.colorHandler = new PDFColorHandler(doc.getResources());
resourceContext = page;
currentFontName = font;
currentFontSize = size;
fontInfo = fi;
pageRef = pref;
paintingState = new PDFPaintingState();
this.transparencyIgnoredEventListener = listener;
}
/**
* Create a new PDFGraphics2D.
*
* @param textAsShapes true if drawing text as shapes
*/
protected PDFGraphics2D(boolean textAsShapes) {
super(textAsShapes);
}
/**
* This constructor supports the create method.
* This is not implemented properly.
*
* @param g the PDF graphics to make a copy of
*/
public PDFGraphics2D(PDFGraphics2D g) {
super(g);
this.pdfDoc = g.pdfDoc;
this.colorHandler = g.colorHandler;
this.resourceContext = g.resourceContext;
this.currentFontName = g.currentFontName;
this.currentFontSize = g.currentFontSize;
this.fontInfo = g.fontInfo;
this.pageRef = g.pageRef;
this.paintingState = g.paintingState;
this.currentStream = g.currentStream;
this.nativeCount = g.nativeCount;
this.outputStream = g.outputStream;
this.ovFontState = g.ovFontState;
this.transparencyIgnoredEventListener = g.transparencyIgnoredEventListener;
}
/**
* 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.
*/
@Override
public Graphics create() {
return new PDFGraphics2D(this);
}
/**
* Central handler for IOExceptions for this class.
* @param ioe IOException to handle
*/
protected void handleIOException(IOException ioe) {
//TODO Surely, there's a better way to do this.
ioe.printStackTrace();
}
/**
* This method is used by PDFDocumentGraphics2D to prepare a new page if
* necessary.
*/
protected void preparePainting() {
//nop, used by PDFDocumentGraphics2D
}
/**
* Set the PDF state to use when starting to draw
* into the PDF graphics.
*
* @param state the PDF state
*/
public void setPaintingState(PDFPaintingState state) {
paintingState = state;
baseLevel = paintingState.getStackLevel(); // @SuppressFBWarnings("URF_UNREAD_PUBLIC_OR_PROTECTED_FIELD")
}
/**
* 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.
*
* @param os the output stream that is being used for the PDF document
*/
public void setOutputStream(OutputStream os) {
outputStream = os;
}
/**
* Get the string containing all the commands written into this
* Graphics.
* @return the string containing the PDF markup
*/
public String getString() {
return currentStream.toString();
}
/**
* Get the string buffer from the currentStream, containing all
* the commands written into this Graphics so far.
* @return the StringBuffer containing the PDF markup
*/
public StringBuffer getBuffer() {
return currentStream.getBuffer();
}
/**
* Gets the PDF reference of the current page.
* @return the PDF reference of the current page
*/
public PDFReference getPageReference() {
return this.pageRef;
}
/**
* Set the Graphics context.
* @param c the graphics context to use
*/
public void setGraphicContext(GraphicContext c) {
gc = c;
setPrivateHints();
}
private void setPrivateHints() {
setRenderingHint(RenderingHintsKeyExt.KEY_AVOID_TILE_PAINTING,
RenderingHintsKeyExt.VALUE_AVOID_TILE_PAINTING_ON);
}
/**
* 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.
*
* @param infont the font state to use
*/
public void setOverrideFontState(Font infont) {
ovFontState = infont;
}
/**
* Restore the PDF graphics state to the starting state level.
*/
/* seems not to be used
public void restorePDFState() {
for (int count = graphicsState.getStackLevel(); count > baseLevel; count--) {
currentStream.write("Q\n");
}
graphicsState.restoreLevel(baseLevel);
}*/
private void concatMatrix(double[] matrix) {
currentStream.write(PDFNumber.doubleOut(matrix[0], DEC) + " "
+ PDFNumber.doubleOut(matrix[1], DEC) + " "
+ PDFNumber.doubleOut(matrix[2], DEC) + " "
+ PDFNumber.doubleOut(matrix[3], DEC) + " "
+ PDFNumber.doubleOut(matrix[4], DEC) + " "
+ PDFNumber.doubleOut(matrix[5], DEC) + " cm\n");
}
private void concatMatrix(AffineTransform transform) {
if (!transform.isIdentity()) {
double[] matrix = new double[6];
transform.getMatrix(matrix);
concatMatrix(matrix);
}
}
/**
* This is mainly used for shading patterns which use the document-global coordinate system
* instead of the local one.
* @return the transformation matrix that established the basic user space for this document
*/
protected AffineTransform getBaseTransform() {
AffineTransform at = new AffineTransform(paintingState.getTransform());
return at;
}
/**
* This is a pdf specific method used to add a link to the
* pdf document.
*
* @param bounds the bounds of the link in user coordinates
* @param trans the transform of the current drawing position
* @param dest the PDF destination
* @param linkType the type of link, internal or external
*/
public void addLink(Rectangle2D bounds, AffineTransform trans, String dest, int linkType) {
if (!pdfDoc.getProfile().isAnnotationAllowed()) {
return;
}
preparePainting();
AffineTransform at = getTransform();
Shape b = at.createTransformedShape(bounds);
b = trans.createTransformedShape(b);
if (b != null) {
Rectangle rect = b.getBounds();
if (linkType != PDFLink.EXTERNAL) {
String pdfdest = "/FitR " + dest;
resourceContext.addAnnotation(
pdfDoc.getFactory().makeLink(rect, getPageReference().toString(), pdfdest));
} else {
resourceContext.addAnnotation(
pdfDoc.getFactory().makeLink(rect, dest, linkType, 0));
}
}
}
/**
* 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.
*
* @param image the image to draw
* @param x the x position
* @param y the y position
* @param width the width to draw the image
* @param height the height to draw the image
*/
public void addNativeImage(org.apache.xmlgraphics.image.loader.Image image, float x, float y,
float width, float height) {
preparePainting();
String key = image.getInfo().getOriginalURI();
if (key == null) {
// Need to include hash code as when invoked from FO you
// may have several 'independent' PDFGraphics2D so the
// count is not enough.
key = "__AddNative_" + hashCode() + "_" + nativeCount;
nativeCount++;
}
PDFImage pdfImage;
if (image instanceof ImageRawJPEG) {
pdfImage = new ImageRawJPEGAdapter((ImageRawJPEG)image, key);
} else if (image instanceof ImageRawCCITTFax) {
pdfImage = new ImageRawCCITTFaxAdapter((ImageRawCCITTFax)image, key);
} else {
throw new IllegalArgumentException(
"Unsupported Image subclass: " + image.getClass().getName());
}
PDFXObject xObject = this.pdfDoc.addImage(resourceContext, pdfImage);
flushPDFDocument();
AffineTransform at = new AffineTransform();
at.translate(x, y);
useXObject(xObject, at, width, height);
}
private void flushPDFDocument() {
if (outputStream != null && !pdfDoc.isLinearizationEnabled()) {
try {
this.pdfDoc.output(outputStream);
} catch (IOException ioe) {
// ignore exception, will be thrown again later
}
}
}
/**
* Draws as much of the specified image as is currently available.
* The image is drawn with its top-left corner at
* (<i>x</i>, <i>y</i>) in this graphics context's coordinate
* space. Transparent pixels in the image do not affect whatever
* pixels are already there.
* <p>
* 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.
* <p>
* If the image has not yet been completely loaded, then
* <code>drawImage</code> returns <code>false</code>. As more of
* the image becomes available, the process that draws the image notifies
* the specified image observer.
* @param img the specified image to be drawn.
* @param x the <i>x</i> coordinate.
* @param y the <i>y</i> coordinate.
* @param observer object to be notified as more of
* the image is converted.
* @return true if the image was drawn
* @see java.awt.Image
* @see java.awt.image.ImageObserver
* @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
*/
@Override
public boolean drawImage(Image img, int x, int y,
ImageObserver observer) {
preparePainting();
int width = img.getWidth(observer);
int height = img.getHeight(observer);
if (width == -1 || height == -1) {
return false;
}
return drawImage(img, x, y, width, height, observer);
}
private BufferedImage buildBufferedImage(Dimension size) {
return new BufferedImage(size.width, size.height,
BufferedImage.TYPE_INT_ARGB);
}
/** {@inheritDoc} */
@Override
public boolean drawImage(Image img, int x, int y, int width, int height,
ImageObserver observer) {
preparePainting();
// first we look to see if we've already added this image to
// the pdf document. If so, we just reuse the reference;
// otherwise we have to build a FopImage and add it to the pdf
// document
String key = "TempImage:" + img.toString();
PDFXObject xObject = pdfDoc.getXObject(key);
if (xObject == null) {
// OK, have to build and add a PDF image
Dimension size = new Dimension(width, height);
BufferedImage buf = buildBufferedImage(size);
java.awt.Graphics2D g = buf.createGraphics();
g.setComposite(AlphaComposite.SrcOver);
g.setBackground(new Color(1, 1, 1, 0));
g.setPaint(new Color(1, 1, 1, 0));
g.fillRect(0, 0, width, height);
int imageWidth = buf.getWidth();
int imageHeight = buf.getHeight();
g.clip(new Rectangle(0, 0, imageWidth, imageHeight));
g.setComposite(gc.getComposite());
boolean drawn = g.drawImage(img, 0, 0, imageWidth, imageHeight, observer);
if (!drawn) {
return false;
}
g.dispose();
xObject = addRenderedImage(key, buf);
} else {
resourceContext.addXObject(xObject);
}
AffineTransform at = new AffineTransform();
at.translate(x, y);
useXObject(xObject, at, width, height);
return true;
}
/**
* Disposes of this graphics context and releases
* any system resources that it is using.
* A <code>Graphics</code> object cannot be used after
* <code>dispose</code>has been called.
* <p>
* When a Java program runs, a large number of <code>Graphics</code>
* 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.
* <p>
* Graphics objects which are provided as arguments to the
* <code>paint</code> and <code>update</code> methods
* of components are automatically released by the system when
* those methods return. For efficiency, programmers should
* call <code>dispose</code> when finished using
* a <code>Graphics</code> object only if it was created
* directly from a component or another <code>Graphics</code> object.
* @see java.awt.Graphics#finalize
* @see java.awt.Component#paint
* @see java.awt.Component#update
* @see java.awt.Component#getGraphics
* @see java.awt.Graphics#create
*/
@Override
public void dispose() {
pdfDoc = null;
fontInfo = null;
currentStream = null;
currentFontName = null;
}
/**
* Strokes the outline of a <code>Shape</code> using the settings of the
* current <code>Graphics2D</code> context. The rendering attributes
* applied include the <code>Clip</code>, <code>Transform</code>,
* <code>Paint</code>, <code>Composite</code> and
* <code>Stroke</code> attributes.
* @param s the <code>Shape</code> to be rendered
* @see #setStroke
* @see #setPaint
* @see java.awt.Graphics#setColor
* @see #transform
* @see #setTransform
* @see #clip
* @see #setClip
* @see #setComposite
*/
@Override
public void draw(Shape s) {
preparePainting();
//Transparency shortcut
Color c;
c = getColor();
if (c.getAlpha() == 0) {
return;
}
AffineTransform trans = getTransform();
double[] tranvals = new double[6];
trans.getMatrix(tranvals);
Shape imclip = getClip();
boolean newClip = paintingState.checkClip(imclip);
boolean newTransform = paintingState.checkTransform(trans)
&& !trans.isIdentity();
if (newClip || newTransform) {
saveGraphicsState();
if (newTransform) {
concatMatrix(tranvals);
}
if (newClip) {
writeClip(imclip);
}
}
applyAlpha(OPAQUE, c.getAlpha());
c = getColor();
applyColor(c, false);
c = getBackground();
applyColor(c, true);
Paint paint = getPaint();
if (paintingState.setPaint(paint)) {
if (!applyPaint(paint, false)) {
// Stroke the shape and use it to 'clip'
// the paint contents.
Shape ss = getStroke().createStrokedShape(s);
applyUnknownPaint(paint, ss);
if (newClip || newTransform) {
restoreGraphicsState();
}
return;
}
}
applyStroke(getStroke());
PathIterator iter = s.getPathIterator(IDENTITY_TRANSFORM);
processPathIterator(iter);
doDrawing(false, true, false);
if (newClip || newTransform) {
restoreGraphicsState();
}
}
/*
// in theory we could set the clip using these methods
// it doesn't seem to improve the file sizes much
// and makes everything more complicated
Shape lastClip = null;
public void clip(Shape cl) {
super.clip(cl);
Shape newClip = getClip();
if (newClip == null || lastClip == null
|| !(new Area(newClip).equals(new Area(lastClip)))) {
graphicsState.setClip(newClip);
writeClip(newClip);
}
lastClip = newClip;
}
public void setClip(Shape cl) {
super.setClip(cl);
Shape newClip = getClip();
if (newClip == null || lastClip == null
|| !(new Area(newClip).equals(new Area(lastClip)))) {
for (int count = graphicsState.getStackLevel(); count > baseLevel; count--) {
currentStream.write("Q\n");
}
graphicsState.restoreLevel(baseLevel);
currentStream.write("q\n");
graphicsState.push();
if (newClip != null) {
graphicsState.setClip(newClip);
}
writeClip(newClip);
}
lastClip = newClip;
}
*/
/**
* 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.
*
* @param s the clipping shape
*/
protected void writeClip(Shape s) {
if (s == null) {
return;
}
PathIterator iter = s.getPathIterator(IDENTITY_TRANSFORM);
if (iter.isDone()) {
// no segments available. Not worth doing anything
return;
}
preparePainting();
processPathIterator(iter);
// clip area
currentStream.write("W\n");
currentStream.write("n\n");
}
/**
* Apply the java Color to PDF.
* This converts the java colour to a PDF colour and
* sets it for the next drawing.
*
* @param col the java colour
* @param fill true if the colour will be used for filling
*/
protected void applyColor(Color col, boolean fill) {
preparePainting();
//TODO Handle this in PDFColorHandler by automatically converting the color.
//This won't work properly anyway after the redesign of ColorExt
if (col.getColorSpace().getType() == ColorSpace.TYPE_CMYK) {
if (pdfDoc.getProfile().getPDFAMode().isPart1()) {
//See PDF/A-1, ISO 19005:1:2005(E), 6.2.3.3
//FOP is currently restricted to DeviceRGB if PDF/A-1 is active.
throw new PDFConformanceException(
"PDF/A-1 does not allow mixing DeviceRGB and DeviceCMYK.");
}
}
boolean doWrite = false;
if (fill) {
if (paintingState.setBackColor(col)) {
doWrite = true;
}
} else {
if (paintingState.setColor(col)) {
doWrite = true;
}
}
if (doWrite) {
StringBuffer sb = new StringBuffer();
colorHandler.establishColor(sb, col, fill);
currentStream.write(sb.toString());
}
}
/**
* 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.
*
* @param paint the paint to convert to PDF
* @param fill true if the paint should be set for filling
* @return true if the paint is handled natively, false if the paint should be rasterized
*/
protected boolean applyPaint(Paint paint, boolean fill) {
preparePainting();
if (paint instanceof Color) {
return true;
}
// convert java.awt.GradientPaint to LinearGradientPaint to avoid rasterization
if (paint instanceof GradientPaint) {
GradientPaint gpaint = (GradientPaint) paint;
paint = new LinearGradientPaint(
(float) gpaint.getPoint1().getX(),
(float) gpaint.getPoint1().getY(),
(float) gpaint.getPoint2().getX(),
(float) gpaint.getPoint2().getY(),
new float[] {0, 1},
new Color[] {gpaint.getColor1(), gpaint.getColor2()},
gpaint.isCyclic() ? LinearGradientPaint.REPEAT : LinearGradientPaint.NO_CYCLE);
}
if (paint instanceof LinearGradientPaint && gradientSupported((LinearGradientPaint) paint)) {
Pattern pattern = GradientMaker.makeLinearGradient((LinearGradientPaint) paint,
getBaseTransform(), getTransform());
PDFPattern pdfPattern = createPDFPattern(pattern);
currentStream.write(pdfPattern.getColorSpaceOut(fill));
return true;
}
if (paint instanceof RadialGradientPaint && gradientSupported((RadialGradientPaint) paint)) {
Pattern pattern = GradientMaker.makeRadialGradient((RadialGradientPaint) paint,
getBaseTransform(), getTransform());
PDFPattern pdfPattern = createPDFPattern(pattern);
currentStream.write(pdfPattern.getColorSpaceOut(fill));
return true;
}
if (paint instanceof PatternPaint) {
PatternPaint pp = (PatternPaint)paint;
return createPattern(pp, fill);
}
return false; // unknown paint
}
private PDFPattern createPDFPattern(Pattern pattern) {
Shading shading = pattern.getShading();
Function function = shading.getFunction();
List<PDFFunction> pdfFunctions = new ArrayList<PDFFunction>(function.getFunctions().size());
for (Function f : function.getFunctions()) {
pdfFunctions.add(registerFunction(new PDFFunction(f)));
}
PDFFunction pdfFunction = registerFunction(new PDFFunction(function, pdfFunctions));
PDFShading pdfShading = new PDFShading(shading.getShadingType(), shading.getColorSpace(), shading.getCoords(),
pdfFunction);
pdfShading = registerShading(pdfShading);
PDFPattern pdfPattern = new PDFPattern(pattern.getPatternType(), pdfShading, null, null, pattern.getMatrix());
return registerPattern(pdfPattern);
}
private boolean gradientSupported(MultipleGradientPaint gradient) {
return !(gradientContainsTransparency(gradient) || gradientIsRepeated(gradient));
}
private boolean gradientContainsTransparency(MultipleGradientPaint gradient) {
for (Color color : gradient.getColors()) {
if (color.getAlpha() != 255) {
return true;
}
}
return false;
}
private boolean gradientIsRepeated(MultipleGradientPaint gradient) {
// For linear gradients it is possible to construct a 'tile' that is repeated with
// a PDF pattern, but it would be very tricky as the coordinate system would have
// to be rotated so the repeat is axially aligned.
// For radial gradients there is essentially no way to support repeats in PDF (the
// one option would be to 'grow' the outer circle until it fully covers the
// bounds and then grow the stops accordingly, the problem is that this may
// require an extremely large number of stops for cases where the focus is near
// the edge of the outer circle).
return (gradient.getCycleMethod() != MultipleGradientPaint.NO_CYCLE);
}
private boolean createPattern(PatternPaint pp, boolean fill) {
preparePainting();
FontInfo specialFontInfo = new FontInfo();
boolean base14Kerning = false;
FontSetup.setup(specialFontInfo, base14Kerning);
PDFResources res = pdfDoc.getFactory().makeResources();
PDFResourceContext context = new PDFResourceContext(res);
PDFGraphics2D pattGraphic = new PDFGraphics2D(textAsShapes, specialFontInfo,
pdfDoc, context, getPageReference(),
"", 0, transparencyIgnoredEventListener);
pattGraphic.setGraphicContext(new GraphicContext());
pattGraphic.gc.validateTransformStack();
pattGraphic.setRenderingHints(this.getRenderingHints());
pattGraphic.setOutputStream(outputStream);
GraphicsNode gn = pp.getGraphicsNode();
//Rectangle2D gnBBox = gn.getBounds();
Rectangle2D rect = pp.getPatternRect();
// if (!pp.getOverflow()) {
gn.paint(pattGraphic);
// } else {
// /* Commented out until SVN version of Batik is included */
// // For overflow we need to paint the content from
// // all the tiles who's overflow will intersect one
// // tile (left->right, top->bottom). Then we can
// // simply replicate that tile as normal.
// double gnMinX = gnBBox.getX();
// double gnMaxX = gnBBox.getX() + gnBBox.getWidth();
// double gnMinY = gnBBox.getY();
// double gnMaxY = gnBBox.getY() + gnBBox.getHeight();
// double patMaxX = rect.getX() + rect.getWidth();
// double patMaxY = rect.getY() + rect.getHeight();
// double stepX = rect.getWidth();
// double stepY = rect.getHeight();
//
// int startX = (int)((rect.getX() - gnMaxX)/stepX);
// int startY = (int)((rect.getY() - gnMaxY)/stepY);
//
// int endX = (int)((patMaxX - gnMinX)/stepX);
// int endY = (int)((patMaxY - gnMinY)/stepY);
//
// pattGraphic.translate(startX*stepX, startY*stepY);
// for (int yIdx=startY; yIdx<=endY; yIdx++) {
// for (int xIdx=startX; xIdx<=endX; xIdx++) {
// gn.paint(pattGraphic);
// pattGraphic.translate(stepX,0);
// }
// pattGraphic.translate(-(endX-startX+1)*stepX, stepY);
// }
// }
List<Double> bbox = new java.util.ArrayList<Double>();
bbox.add(rect.getX());
bbox.add(rect.getHeight() + rect.getY());
bbox.add(rect.getWidth() + rect.getX());
bbox.add(rect.getY());
AffineTransform transform;
transform = new AffineTransform(getBaseTransform());
transform.concatenate(getTransform());
transform.concatenate(pp.getPatternTransform());
List<Double> theMatrix = new java.util.ArrayList<Double>();
double [] mat = new double[6];
transform.getMatrix(mat);
for (double aMat : mat) {
theMatrix.add(aMat);
}
/** @todo see if pdfDoc and res can be linked here,
(currently res <> PDFDocument's resources) so addFonts()
can be moved to PDFDocument class */
res.addFonts(pdfDoc, specialFontInfo);
PDFPattern myPat = pdfDoc.getFactory().makePattern(
resourceContext, 1, res, 1, 1, bbox,
rect.getWidth(), rect.getHeight(),
theMatrix, null,
pattGraphic.getBuffer());
currentStream.write(myPat.getColorSpaceOut(fill));
PDFAnnotList annots = context.getAnnotations();
if (annots != null) {
this.pdfDoc.addObject(annots);
}
flushPDFDocument();
return true;
}
/**
* @param paint some paint
* @param shape a shape
* @return true (always)
*/
protected boolean applyUnknownPaint(Paint paint, Shape shape) {
preparePainting();
Shape clip = getClip();
Rectangle2D usrClipBounds;
Rectangle2D usrBounds;
usrBounds = shape.getBounds2D();
if (clip != null) {
usrClipBounds = clip.getBounds2D();
if (!usrClipBounds.intersects(usrBounds)) {
return true;
}
Rectangle2D.intersect(usrBounds, usrClipBounds, usrBounds);
}
double usrX = usrBounds.getX();
double usrY = usrBounds.getY();
double usrW = usrBounds.getWidth();
double usrH = usrBounds.getHeight();
Rectangle devShapeBounds;
Rectangle devClipBounds;
Rectangle devBounds;
AffineTransform at = getTransform();
devShapeBounds = at.createTransformedShape(shape).getBounds();
if (clip != null) {
devClipBounds = at.createTransformedShape(clip).getBounds();
if (!devClipBounds.intersects(devShapeBounds)) {
return true;
}
devBounds = devShapeBounds.intersection(devClipBounds);
} else {
devBounds = devShapeBounds;
}
int devX = devBounds.x;
int devY = devBounds.y;
int devW = devBounds.width;
int devH = devBounds.height;
ColorSpace rgbCS = ColorSpace.getInstance(ColorSpace.CS_sRGB);
ColorModel rgbCM = new DirectColorModel(
rgbCS, 32, 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000,
false, DataBuffer.TYPE_BYTE);
PaintContext pctx = paint.createContext(rgbCM, devBounds, usrBounds,
at, getRenderingHints());
PDFXObject imageInfo = pdfDoc.getXObject(
"TempImage:" + pctx.toString());
if (imageInfo != null) {
resourceContext.addXObject(imageInfo);
} else {
Raster r = pctx.getRaster(devX, devY, devW, devH);
assert (r instanceof WritableRaster);
WritableRaster wr = (WritableRaster) r;
wr = wr.createWritableTranslatedChild(0, 0);
ColorModel pcm = pctx.getColorModel();
BufferedImage bi = new BufferedImage(
pcm, wr, pcm.isAlphaPremultiplied(), null);
final byte[] rgb = new byte[devW * devH * 3];
final int[] line = new int[devW];
final byte[] mask;
int x;
int y;
int val;
int rgbIdx = 0;
if (pcm.hasAlpha()) {
mask = new byte[devW * devH];
int maskIdx = 0;
for (y = 0; y < devH; y++) {
bi.getRGB(0, y, devW, 1, line, 0, devW);
for (x = 0; x < devW; x++) {
val = line[x];
mask[maskIdx++] = (byte)(val >>> 24);
rgb[rgbIdx++] = (byte)((val >> 16) & 0x0FF);
rgb[rgbIdx++] = (byte)((val >> 8) & 0x0FF);
rgb[rgbIdx++] = (byte)(val & 0x0FF);
}
}
} else {
mask = null;
for (y = 0; y < devH; y++) {
bi.getRGB(0, y, devW, 1, line, 0, devW);
for (x = 0; x < devW; x++) {
val = line[x];
rgb[rgbIdx++] = (byte)((val >> 16) & 0x0FF);
rgb[rgbIdx++] = (byte)((val >> 8) & 0x0FF);
rgb[rgbIdx++] = (byte)(val & 0x0FF);
}
}
}
PDFReference maskRef = null;
if (mask != null) {
BitmapImage fopimg = new BitmapImage(
"TempImageMask:" + pctx.toString(), devW, devH, mask, null);
fopimg.setColorSpace(new PDFDeviceColorSpace(PDFDeviceColorSpace.DEVICE_GRAY));
PDFImageXObject xobj = pdfDoc.addImage(resourceContext, fopimg);
maskRef = xobj.makeReference();
flushPDFDocument();
}
BitmapImage fopimg;
fopimg = new BitmapImage("TempImage:" + pctx.toString(),
devW, devH, rgb, maskRef);
fopimg.setTransparent(new PDFColor(255, 255, 255));
imageInfo = pdfDoc.addImage(resourceContext, fopimg);
flushPDFDocument();
}
currentStream.write("q\n");
writeClip(shape);
currentStream.write("" + PDFNumber.doubleOut(usrW) + " 0 0 " + PDFNumber.doubleOut(-usrH) + " "
+ PDFNumber.doubleOut(usrX) + " " + PDFNumber.doubleOut(usrY + usrH) + " cm\n"
+ imageInfo.getName() + " Do\nQ\n");
return true;
}
/**
* 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.
*
* @param stroke the java stroke
*/
protected void applyStroke(Stroke stroke) {
preparePainting();
if (stroke instanceof BasicStroke) {
BasicStroke bs = (BasicStroke)stroke;
float[] da = bs.getDashArray();
if (da != null) {
currentStream.write("[");
for (int count = 0; count < da.length; count++) {
currentStream.write(PDFNumber.doubleOut(da[count]));
if (count < da.length - 1) {
currentStream.write(" ");
}
}
currentStream.write("] ");
float offset = bs.getDashPhase();
currentStream.write(PDFNumber.doubleOut(offset) + " d\n");
} else {
currentStream.write("[] 0 d\n");
}
int ec = bs.getEndCap();
switch (ec) {
case BasicStroke.CAP_BUTT:
currentStream.write(0 + " J\n");
break;
case BasicStroke.CAP_ROUND:
currentStream.write(1 + " J\n");
break;
case BasicStroke.CAP_SQUARE:
currentStream.write(2 + " J\n");
break;
default:
break;
}
int lj = bs.getLineJoin();
switch (lj) {
case BasicStroke.JOIN_MITER:
currentStream.write(0 + " j\n");
break;
case BasicStroke.JOIN_ROUND:
currentStream.write(1 + " j\n");
break;
case BasicStroke.JOIN_BEVEL:
currentStream.write(2 + " j\n");
break;
default:
break;
}
float lw = bs.getLineWidth();
currentStream.write(PDFNumber.doubleOut(lw) + " w\n");
float ml = Math.max(1.0f, bs.getMiterLimit());
currentStream.write(PDFNumber.doubleOut(ml) + " M\n");
}
}
/** {@inheritDoc} */
@Override
public void drawRenderedImage(RenderedImage img, AffineTransform xform) {
String key = "TempImage:" + img.toString();
drawInnerRenderedImage(key, img, xform);
}
/**
* @param key a key
* @param img an image
* @param xform a transform
*/
public void drawInnerRenderedImage(String key, RenderedImage img, AffineTransform xform) {
preparePainting();
PDFXObject xObject = pdfDoc.getXObject(key);
if (xObject == null) {
xObject = addRenderedImage(key, img);
} else {
resourceContext.addXObject(xObject);
}
useXObject(xObject, xform, img.getWidth(), img.getHeight());
}
private void useXObject(PDFXObject xObject, AffineTransform xform, float width, float height) {
// now do any transformation required and add the actual image
// placement instance
currentStream.write("q\n");
concatMatrix(getTransform());
Shape imclip = getClip();
writeClip(imclip);
concatMatrix(xform);
String w = PDFNumber.doubleOut(width, DEC);
String h = PDFNumber.doubleOut(height, DEC);
currentStream.write("" + w + " 0 0 -" + h + " 0 " + h + " cm\n"
+ xObject.getName() + " Do\nQ\n");
}
private PDFXObject addRenderedImage(String key, RenderedImage img) {
ImageInfo info = new ImageInfo(null, "image/unknown");
ImageSize size = new ImageSize(img.getWidth(), img.getHeight(),
GraphicsConstants.DEFAULT_DPI);
info.setSize(size);
ImageRendered imgRend = new ImageRendered(info, img, null);
ImageRenderedAdapter adapter = new ImageRenderedAdapter(imgRend, key);
PDFXObject xObject = pdfDoc.addImage(resourceContext, adapter);
flushPDFDocument();
return xObject;
}
/** {@inheritDoc} */
@Override
public void drawRenderableImage(RenderableImage img,
AffineTransform xform) {
//TODO Check if this is good enough
drawRenderedImage(img.createDefaultRendering(), xform);
}
/**
* Renders the text specified by the specified <code>String</code>,
* using the current <code>Font</code> and <code>Paint</code> attributes
* in the <code>Graphics2D</code> context.
* The baseline of the first character is at position
* (<i>x</i>, <i>y</i>) in the User Space.
* The rendering attributes applied include the <code>Clip</code>,
* <code>Transform</code>, <code>Paint</code>, <code>Font</code> and
* <code>Composite</code> 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.
* @param s the <code>String</code> to be rendered
* @param x the coordinate where the <code>String</code>
* should be rendered
* @param y the coordinate where the <code>String</code>
* should be rendered
* @see #setPaint
* @see java.awt.Graphics#setColor
* @see java.awt.Graphics#setFont
* @see #setTransform
* @see #setComposite
* @see #setClip
*/
@Override
public void drawString(String s, float x, float y) {
preparePainting();
Font fontState;
AffineTransform fontTransform = null;
if (ovFontState == null) {
java.awt.Font gFont = getFont();
fontTransform = gFont.getTransform();
fontState = fontInfo.getFontInstanceForAWTFont(gFont);
} else {
fontState = fontInfo.getFontInstance(
ovFontState.getFontTriplet(), ovFontState.getFontSize());
ovFontState = null;
}
updateCurrentFont(fontState);
saveGraphicsState();
Color c = getColor();
applyColor(c, true);
applyPaint(getPaint(), true);
applyAlpha(c.getAlpha(), OPAQUE);
Map<Integer, Map<Integer, Integer>> kerning = fontState.getKerning();
boolean kerningAvailable = (kerning != null && !kerning.isEmpty());
boolean useMultiByte = isMultiByteFont(currentFontName);
// String startText = useMultiByte ? "<FEFF" : "(";
String startText = useMultiByte ? "<" : "(";
String endText = useMultiByte ? "> " : ") ";
AffineTransform trans = getTransform();
//trans.translate(x, y);
double[] vals = new double[6];
trans.getMatrix(vals);
concatMatrix(vals);
Shape imclip = getClip();
writeClip(imclip);
currentStream.write("BT\n");
AffineTransform localTransform = new AffineTransform();
localTransform.translate(x, y);
if (fontTransform != null) {
localTransform.concatenate(fontTransform);
}
localTransform.scale(1, -1);
double[] lt = new double[6];
localTransform.getMatrix(lt);
currentStream.write(PDFNumber.doubleOut(lt[0]) + " "
+ PDFNumber.doubleOut(lt[1]) + " " + PDFNumber.doubleOut(lt[2]) + " "
+ PDFNumber.doubleOut(lt[3]) + " " + PDFNumber.doubleOut(lt[4]) + " "
+ PDFNumber.doubleOut(lt[5]) + " Tm [" + startText);
int l = s.length();
for (int i = 0; i < l; i++) {
char ch = fontState.mapChar(s.charAt(i));
if (!useMultiByte) {
if (ch > 127) {
currentStream.write("\\");
currentStream.write(Integer.toOctalString(ch));
} else {
switch (ch) {
case '(':
case ')':
case '\\':
currentStream.write("\\");
break;
default:
}
currentStream.write(ch);
}
} else {
currentStream.write(PDFText.toUnicodeHex(ch));
}
if (kerningAvailable && (i + 1) < l) {
addKerning(currentStream, ((int) ch),
((int) fontState.mapChar(s.charAt(i + 1))),
kerning, startText, endText);
}
}
currentStream.write(endText);
currentStream.write("] TJ\n");
currentStream.write("ET\n");
restoreGraphicsState();
}
/**
* Applies the given alpha values for filling and stroking.
* @param fillAlpha A value between 0 and 255 (=OPAQUE) for filling
* @param strokeAlpha A value between 0 and 255 (=OPAQUE) for stroking
*/
protected void applyAlpha(int fillAlpha, int strokeAlpha) {
if (fillAlpha != OPAQUE || strokeAlpha != OPAQUE) {
Object profile = isTransparencyAllowed();
if (profile == null) {
Map<String, Float> vals = new java.util.HashMap<String, Float>();
if (fillAlpha != OPAQUE) {
vals.put(PDFGState.GSTATE_ALPHA_NONSTROKE, fillAlpha / 255f);
}
if (strokeAlpha != OPAQUE) {
vals.put(PDFGState.GSTATE_ALPHA_STROKE, strokeAlpha / 255f);
}
PDFGState gstate = pdfDoc.getFactory().makeGState(vals, paintingState.getGState());
resourceContext.addGState(gstate);
currentStream.write("/" + gstate.getName() + " gs\n");
} else if (transparencyIgnoredEventListener != null) {
transparencyIgnoredEventListener.transparencyIgnored(profile);
}
}
}
/**
* Updates the currently selected font.
* @param font the new font to use
*/
protected void updateCurrentFont(Font font) {
String name = font.getFontName();
float size = font.getFontSize() / 1000f;
//Only update if necessary
if ((!name.equals(this.currentFontName))
|| (size != this.currentFontSize)) {
this.currentFontName = name;
this.currentFontSize = size;
currentStream.write("/" + name + " " + size + " Tf\n");
}
}
/**
* Returns a suitable internal font given an AWT Font instance.
* @param awtFont the AWT font
* @return the internal Font
* @deprecated use FontInfo.getFontInstanceForAWTFont(java.awt.Font awtFont) instead
*/
@Deprecated
protected Font getInternalFontForAWTFont(java.awt.Font awtFont) {
return fontInfo.getFontInstanceForAWTFont(awtFont);
}
/**
* Determines whether the font with the given name is a multi-byte font.
* @param name the name of the font
* @return true if it's a multi-byte font
*/
protected boolean isMultiByteFont(String name) {
// This assumes that *all* CIDFonts use a /ToUnicode mapping
org.apache.fop.fonts.Typeface f
= fontInfo.getFonts().get(name);
return f.isMultiByte();
}
private void addKerning(StringWriter buf, Integer ch1, Integer ch2,
Map<Integer, Map<Integer, Integer>> kerning, String startText,
String endText) {
preparePainting();
Map<Integer, Integer> kernPair = kerning.get(ch1);
if (kernPair != null) {
Integer width = kernPair.get(ch2);
if (width != null) {
currentStream.write(endText + (-width) + " " + startText);
}
}
}
/**
* Renders the text of the specified iterator, using the
* <code>Graphics2D</code> context's current <code>Paint</code>. The
* iterator must specify a font
* for each character. The baseline of the
* first character is at position (<i>x</i>, <i>y</i>) in the
* User Space.
* The rendering attributes applied include the <code>Clip</code>,
* <code>Transform</code>, <code>Paint</code>, and
* <code>Composite</code> 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.
* @param iterator the iterator whose text is to be rendered
* @param x the coordinate where the iterator's text is to be
* rendered
* @param y the coordinate where the iterator's text is to be
* rendered
* @see #setPaint
* @see java.awt.Graphics#setColor
* @see #setTransform
* @see #setComposite
* @see #setClip
*//* TODO Reimplement for higher efficiency similar to the way it was done in PDFTextPainter
public void drawString(AttributedCharacterIterator iterator, float x,
float y) {
preparePainting();
Font fontState = null;
Shape imclip = getClip();
writeClip(imclip);
Color c = getColor();
applyColor(c, true);
applyPaint(getPaint(), true);
boolean fill = true;
boolean stroke = false;
if (true) {
Stroke currentStroke = getStroke();
stroke = true;
applyStroke(currentStroke);
applyColor(c, false);
applyPaint(getPaint(), false);
}
currentStream.write("BT\n");
// set text rendering mode:
// 0 - fill, 1 - stroke, 2 - fill then stroke
int textr = 0;
if (fill && stroke) {
textr = 2;
} else if (stroke) {
textr = 1;
}
currentStream.write(textr + " Tr\n");
AffineTransform trans = getTransform();
trans.translate(x, y);
double[] vals = new double[6];
trans.getMatrix(vals);
for (char ch = iterator.first(); ch != CharacterIterator.DONE;
ch = iterator.next()) {
//Map attr = iterator.getAttributes();
String name = fontState.getFontName();
int size = fontState.getFontSize();
if ((!name.equals(this.currentFontName))
|| (size != this.currentFontSize)) {
this.currentFontName = name;
this.currentFontSize = size;
currentStream.write("/" + name + " " + (size / 1000)
+ " Tf\n");
}
currentStream.write(PDFNumber.doubleOut(vals[0], DEC) + " "
+ PDFNumber.doubleOut(vals[1], DEC) + " "
+ PDFNumber.doubleOut(vals[2], DEC) + " "
+ PDFNumber.doubleOut(vals[3], DEC) + " "
+ PDFNumber.doubleOut(vals[4], DEC) + " "
+ PDFNumber.doubleOut(vals[5], DEC) + " Tm (" + ch
+ ") Tj\n");
}
currentStream.write("ET\n");
}*/
/**
* Fills the interior of a <code>Shape</code> using the settings of the
* <code>Graphics2D</code> context. The rendering attributes applied
* include the <code>Clip</code>, <code>Transform</code>,
* <code>Paint</code>, and <code>Composite</code>.
* @param s the <code>Shape</code> to be filled
* @see #setPaint
* @see java.awt.Graphics#setColor
* @see #transform
* @see #setTransform
* @see #setComposite
* @see #clip
* @see #setClip
*/
@Override
public void fill(Shape s) {
preparePainting();
//Transparency shortcut
Color c;
c = getBackground();
if (c.getAlpha() == 0) {
c = getColor();
if (c.getAlpha() == 0) {
return;
}
}
AffineTransform trans = getTransform();
double[] tranvals = new double[6];
trans.getMatrix(tranvals);
Shape imclip = getClip();
boolean newClip = paintingState.checkClip(imclip);
boolean newTransform = paintingState.checkTransform(trans)
&& !trans.isIdentity();
if (newClip || newTransform) {
saveGraphicsState();
if (newTransform) {
concatMatrix(tranvals);
}
if (newClip) {
writeClip(imclip);
}
}
applyAlpha(c.getAlpha(), OPAQUE);
c = getColor();
applyColor(c, true);
c = getBackground();
applyColor(c, false);
Paint paint = getPaint();
if (paintingState.setPaint(paint)) {
if (!applyPaint(paint, true)) {
// Use the shape to 'clip' the paint contents.
applyUnknownPaint(paint, s);
if (newClip || newTransform) {
restoreGraphicsState();
}
return;
}
}
if (s instanceof Rectangle2D) {
Rectangle2D rect = (Rectangle2D)s;
currentStream.write(PDFNumber.doubleOut(rect.getMinX(), DEC) + " "
+ PDFNumber.doubleOut(rect.getMinY(), DEC) + " ");
currentStream.write(PDFNumber.doubleOut(rect.getWidth(), DEC) + " "
+ PDFNumber.doubleOut(rect.getHeight(), DEC) + " re ");
doDrawing(true, false, false);
} else {
PathIterator iter = s.getPathIterator(IDENTITY_TRANSFORM);
processPathIterator(iter);
doDrawing(true, false,
iter.getWindingRule() == PathIterator.WIND_EVEN_ODD);
}
if (newClip || newTransform) {
restoreGraphicsState();
}
}
void saveGraphicsState() {
currentStream.write("q\n");
paintingState.save();
}
void restoreGraphicsState() {
currentStream.write("Q\n");
paintingState.restore();
}
/** Checks whether the use of transparency is allowed. */
protected Object isTransparencyAllowed() {
return pdfDoc.getProfile().isTransparencyAllowed();
}
/**
* Processes a path iterator generating the necessary painting operations.
* @param iter PathIterator to process
*/
public void processPathIterator(PathIterator iter) {
double lastX = 0.0;
double lastY = 0.0;
while (!iter.isDone()) {
double[] vals = new double[6];
int type = iter.currentSegment(vals);
switch (type) {
case PathIterator.SEG_CUBICTO:
lastX = vals[4];
lastY = vals[5];
currentStream.write(PDFNumber.doubleOut(vals[0], DEC) + " "
+ PDFNumber.doubleOut(vals[1], DEC) + " "
+ PDFNumber.doubleOut(vals[2], DEC) + " "
+ PDFNumber.doubleOut(vals[3], DEC) + " "
+ PDFNumber.doubleOut(vals[4], DEC) + " "
+ PDFNumber.doubleOut(vals[5], DEC) + " c\n");
break;
case PathIterator.SEG_LINETO:
lastX = vals[0];
lastY = vals[1];
currentStream.write(PDFNumber.doubleOut(vals[0], DEC) + " "
+ PDFNumber.doubleOut(vals[1], DEC) + " l\n");
break;
case PathIterator.SEG_MOVETO:
lastX = vals[0];
lastY = vals[1];
currentStream.write(PDFNumber.doubleOut(vals[0], DEC) + " "
+ PDFNumber.doubleOut(vals[1], DEC) + " m\n");
break;
case PathIterator.SEG_QUADTO:
double controlPointAX = lastX + ((2.0 / 3.0) * (vals[0] - lastX));
double controlPointAY = lastY + ((2.0 / 3.0) * (vals[1] - lastY));
double controlPointBX = vals[2] + ((2.0 / 3.0) * (vals[0] - vals[2]));
double controlPointBY = vals[3] + ((2.0 / 3.0) * (vals[1] - vals[3]));
currentStream.write(PDFNumber.doubleOut(controlPointAX, DEC) + " "
+ PDFNumber.doubleOut(controlPointAY, DEC) + " "
+ PDFNumber.doubleOut(controlPointBX, DEC) + " "
+ PDFNumber.doubleOut(controlPointBY, DEC) + " "
+ PDFNumber.doubleOut(vals[2], DEC) + " "
+ PDFNumber.doubleOut(vals[3], DEC) + " c\n");
lastX = vals[2];
lastY = vals[3];
break;
case PathIterator.SEG_CLOSE:
currentStream.write("h\n");
break;
default:
break;
}
iter.next();
}
}
/**
* Do the PDF drawing command.
* This does the PDF drawing command according to fill
* stroke and winding rule.
*
* @param fill true if filling the path
* @param stroke true if stroking the path
* @param nonzero true if using the non-zero winding rule
*/
protected void doDrawing(boolean fill, boolean stroke, boolean nonzero) {
preparePainting();
if (fill) {
if (stroke) {
if (nonzero) {
currentStream.write("B*\n");
} else {
currentStream.write("B\n");
}
} else {
if (nonzero) {
currentStream.write("f*\n");
} else {
currentStream.write("f\n");
}
}
} else {
// if (stroke)
currentStream.write("S\n");
}
}
/**
* Returns the device configuration associated with this
* <code>Graphics2D</code>.
*
* @return the PDF graphics configuration
*/
@Override
public GraphicsConfiguration getDeviceConfiguration() {
return new GraphicsConfigurationWithTransparency();
}
/**
* Used to create proper font metrics
*/
private Graphics2D fmg;
{
BufferedImage bi = new BufferedImage(1, 1,
BufferedImage.TYPE_INT_ARGB);
fmg = bi.createGraphics();
}
/**
* Gets the font metrics for the specified font.
* @return the font metrics for the specified font.
* @param f the specified font
* @see java.awt.Graphics#getFont
* @see java.awt.FontMetrics
* @see java.awt.Graphics#getFontMetrics()
*/
@Override
public java.awt.FontMetrics getFontMetrics(java.awt.Font f) {
return fmg.getFontMetrics(f);
}
/**
* 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.
* <p>
* When drawing operations are performed, pixels which are the
* current color are changed to the specified color, and vice versa.
* <p>
* 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.
* @param c1 the XOR alternation color
*/
@Override
public void setXORMode(Color c1) {
//NYI
}
/**
* Copies an area of the component by a distance specified by
* <code>dx</code> and <code>dy</code>. From the point specified
* by <code>x</code> and <code>y</code>, 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
* <code>dx</code> or <code>dy</code>.
* If a portion of the source rectangle lies outside the bounds
* of the component, or is obscured by another window or component,
* <code>copyArea</code> will be unable to copy the associated
* pixels. The area that is omitted can be refreshed by calling
* the component's <code>paint</code> method.
* @param x the <i>x</i> coordinate of the source rectangle.
* @param y the <i>y</i> coordinate of the source rectangle.
* @param width the width of the source rectangle.
* @param height the height of the source rectangle.
* @param dx the horizontal distance to copy the pixels.
* @param dy the vertical distance to copy the pixels.
*/
@Override
public void copyArea(int x, int y, int width, int height, int dx,
int dy) {
//NYI
}
/**
* Registers a function object against the output format document
* @param function The function object to register
* @return Returns either the function which has already been registered
* or the current new registered object.
*/
public PDFFunction registerFunction(PDFFunction function) {
return pdfDoc.getFactory().registerFunction(function);
}
/**
* Registers a shading object against the otuput format document
* @param shading The shading object to register
* @return Returs either the shading which has already been registered
* or the current new registered object
*/
public PDFShading registerShading(PDFShading shading) {
return pdfDoc.getFactory().registerShading(resourceContext, shading);
}
/**
* Registers a pattern object against the output format document
* @param pattern The pattern object to register
* @return Returns either the pattern which has already been registered
* or the current new registered object
*/
public PDFPattern registerPattern(PDFPattern pattern) {
return pdfDoc.getFactory().registerPattern(resourceContext, pattern);
}
}