Hi Jeremias,
I've been working a little with your suggestions.
What I have done is this little work:
1 -Extract code into a protected method to instantiate the BufferedImage
that we paint on. This methods signature is:
protected BufferedImage getBufferedImage(int bitmapWidth, int bitmapHeight)
2- Modify TIFFRenderer.configure() for selecting the BufferedImage type
in a new attribute.
3- Override the new protected method described above to create the
Buffered image depending on the configuration.
Here you are the code:
Java2DRenderer
//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
/*
* Copyright 1999-2006 The Apache Software Foundation.
*
* Licensed 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: Java2DRenderer.java 410308 2006-05-30 15:53:12Z jeremias $ */
package org.apache.fop.render.java2d;
// Java
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.color.ColorSpace;
import java.awt.font.GlyphVector;
import java.awt.geom.AffineTransform;
import java.awt.geom.GeneralPath;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.ComponentColorModel;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.PixelInterleavedSampleModel;
import java.awt.image.Raster;
import java.awt.image.SampleModel;
import java.awt.image.WritableRaster;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Stack;
import org.w3c.dom.Document;
import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.area.CTM;
import org.apache.fop.area.PageViewport;
import org.apache.fop.area.Trait;
import org.apache.fop.area.inline.Image;
import org.apache.fop.area.inline.InlineArea;
import org.apache.fop.area.inline.Leader;
import org.apache.fop.area.inline.SpaceArea;
import org.apache.fop.area.inline.TextArea;
import org.apache.fop.area.inline.WordArea;
import org.apache.fop.fo.Constants;
import org.apache.fop.fonts.Font;
import org.apache.fop.fonts.FontInfo;
import org.apache.fop.fonts.Typeface;
import org.apache.fop.image.FopImage;
import org.apache.fop.image.ImageFactory;
import org.apache.fop.image.XMLImage;
import org.apache.fop.render.AbstractPathOrientedRenderer;
import org.apache.fop.render.Graphics2DAdapter;
import org.apache.fop.render.RendererContext;
import org.apache.fop.render.pdf.CTMHelper;
import org.apache.fop.util.CharUtilities;
/**
* The <code>Java2DRenderer</code> class provides the abstract technical
* foundation for all rendering with the Java2D API. Renderers like
* <code>AWTRenderer</code> subclass it and provide the concrete output
paths.
* <p>
* A lot of the logic is performed by <code>AbstractRenderer</code>. The
* class-variables <code>currentIPPosition</code> and
* <code>currentBPPosition</code> hold the position of the currently
rendered
* area.
* <p>
* <code>Java2DGraphicsState state</code> holds the
<code>Graphics2D</code>,
* which is used along the whole rendering. <code>state</code> also
acts as a
* stack (<code>state.push()</code> and <code>state.pop()</code>).
* <p>
* The rendering process is basically always the same:
* <p>
* <code>void renderXXXXX(Area area) {
* //calculate the currentPosition
* state.updateFont(name, size, null);
* state.updateColor(ct, false, null);
* state.getGraph.draw(new Shape(args));
* }</code>
*
*/
public abstract class Java2DRenderer extends
AbstractPathOrientedRenderer implements Printable {
/** The scale factor for the image size, values: ]0 ; 1] */
protected double scaleFactor = 1;
/** The page width in pixels */
protected int pageWidth = 0;
/** The page height in pixels */
protected int pageHeight = 0;
/** List of Viewports */
protected List pageViewportList = new java.util.ArrayList();
/** The 0-based current page number */
private int currentPageNumber = 0;
/** The 0-based total number of rendered pages */
private int numberOfPages;
/** true if antialiasing is set */
protected boolean antialiasing = true;
/** true if qualityRendering is set */
protected boolean qualityRendering = true;
/** The current state, holds a Graphics2D and its context */
protected Java2DGraphicsState state;
private Stack stateStack = new Stack();
/** true if the renderer has finished rendering all the pages */
private boolean renderingDone;
private GeneralPath currentPath = null;
/** Default constructor */
public Java2DRenderer() {
}
/**
* @see
org.apache.fop.render.Renderer#setUserAgent(org.apache.fop.apps.FOUserAgent)
*/
public void setUserAgent(FOUserAgent foUserAgent) {
super.setUserAgent(foUserAgent);
userAgent.setRendererOverride(this); // for document regeneration
}
/** @return the FOUserAgent */
public FOUserAgent getUserAgent() {
return userAgent;
}
/**
* @see
org.apache.fop.render.Renderer#setupFontInfo(org.apache.fop.fonts.FontInfo)
*/
public void setupFontInfo(FontInfo inFontInfo) {
//Don't call super.setupFontInfo() here! Java2D needs a special
font setup
// create a temp Image to test font metrics on
fontInfo = inFontInfo;
BufferedImage fontImage = new BufferedImage(100, 100,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = fontImage.createGraphics();
//The next line is important to get accurate font metrics!
g.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
RenderingHints.VALUE_FRACTIONALMETRICS_ON);
FontSetup.setup(fontInfo, g);
}
/** @see org.apache.fop.render.Renderer#getGraphics2DAdapter() */
public Graphics2DAdapter getGraphics2DAdapter() {
return new Java2DGraphics2DAdapter(state);
}
/**
* Sets the new scale factor.
* @param newScaleFactor ]0 ; 1]
*/
public void setScaleFactor(double newScaleFactor) {
scaleFactor = newScaleFactor;
}
/** @return the scale factor */
public double getScaleFactor() {
return scaleFactor;
}
/** @see
org.apache.fop.render.Renderer#startRenderer(java.io.OutputStream) */
public void startRenderer(OutputStream out) throws IOException {
// do nothing by default
}
/** @see org.apache.fop.render.Renderer#stopRenderer() */
public void stopRenderer() throws IOException {
log.debug("Java2DRenderer stopped");
renderingDone = true;
numberOfPages = currentPageNumber;
// TODO set all vars to null for gc
if (numberOfPages == 0) {
new FOPException("No page could be rendered");
}
}
/** @return true if the renderer is not currently processing */
public boolean isRenderingDone() {
return this.renderingDone;
}
/**
* @return The 0-based current page number
*/
public int getCurrentPageNumber() {
return currentPageNumber;
}
/**
* @param c the 0-based current page number
*/
public void setCurrentPageNumber(int c) {
this.currentPageNumber = c;
}
/**
* @return The 0-based total number of rendered pages
*/
public int getNumberOfPages() {
return numberOfPages;
}
/**
* Clears the ViewportList.
* Used if the document is reloaded.
*/
public void clearViewportList() {
pageViewportList.clear();
setCurrentPageNumber(0);
}
/**
* This method override only stores the PageViewport in a List. No
actual
* rendering is performed here. A renderer override renderPage() to
get the
* freshly produced PageViewport, and rendere them on the fly
(producing the
* desired BufferedImages by calling getPageImage(), which lazily
starts the
* rendering process).
*
* @param pageViewport the <code>PageViewport</code> object supplied by
* the Area Tree
* @throws IOException In case of an I/O error
* @see org.apache.fop.render.Renderer
*/
public void renderPage(PageViewport pageViewport) throws IOException {
// TODO clone?
pageViewportList.add(pageViewport.clone());
currentPageNumber++;
}
/**
* Generates a desired page from the renderer's page viewport list.
*
* @param pageViewport the PageViewport to be rendered
* @return the <code>java.awt.image.BufferedImage</code>
corresponding to
* the page or null if the page doesn't exist.
*/
public BufferedImage getPageImage(PageViewport pageViewport) {
this.currentPageViewport = pageViewport;
try {
Rectangle2D bounds = pageViewport.getViewArea();
pageWidth = (int) Math.round(bounds.getWidth() / 1000f);
pageHeight = (int) Math.round(bounds.getHeight() / 1000f);
log.info(
"Rendering Page " + pageViewport.getPageNumberString()
+ " (pageWidth " + pageWidth + ", pageHeight "
+ pageHeight + ")");
double scaleX = scaleFactor
* (25.4 / FOUserAgent.DEFAULT_TARGET_RESOLUTION)
/ userAgent.getTargetPixelUnitToMillimeter();
double scaleY = scaleFactor
* (25.4 / FOUserAgent.DEFAULT_TARGET_RESOLUTION)
/ userAgent.getTargetPixelUnitToMillimeter();
int bitmapWidth = (int) ((pageWidth * scaleX) + 0.5);
int bitmapHeight = (int) ((pageHeight * scaleY) + 0.5);
BufferedImage currentPageImage =
getBufferedImage(bitmapWidth, bitmapHeight);
Graphics2D graphics = currentPageImage.createGraphics();
graphics.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
RenderingHints.VALUE_FRACTIONALMETRICS_ON);
if (antialiasing) {
graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
}
if (qualityRendering) {
graphics.setRenderingHint(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);
}
// transform page based on scale factor supplied
AffineTransform at = graphics.getTransform();
at.scale(scaleX, scaleY);
graphics.setTransform(at);
// draw page frame
graphics.setColor(Color.white);
graphics.fillRect(0, 0, pageWidth, pageHeight);
graphics.setColor(Color.black);
graphics.drawRect(-1, -1, pageWidth + 2, pageHeight + 2);
graphics.drawLine(pageWidth + 2, 0, pageWidth + 2,
pageHeight + 2);
graphics.drawLine(pageWidth + 3, 1, pageWidth + 3,
pageHeight + 3);
graphics.drawLine(0, pageHeight + 2, pageWidth + 2,
pageHeight + 2);
graphics.drawLine(1, pageHeight + 3, pageWidth + 3,
pageHeight + 3);
state = new Java2DGraphicsState(graphics, this.fontInfo, at);
try {
// reset the current Positions
currentBPPosition = 0;
currentIPPosition = 0;
// this toggles the rendering of all areas
renderPageAreas(pageViewport.getPage());
} finally {
state = null;
}
return currentPageImage;
} finally {
this.currentPageViewport = null;
}
}
/**
* Returns a specific <coede>BufferedImage</code> depending on this
<code>Java2DRenderer</code>
* implementation configuration.
* <p>
* Override this method to obtain other types of BufferedImage.
*
* @param bitmapWidth
* @param bitmapHeight
* @return
*/
protected BufferedImage getBufferedImage(int bitmapWidth, int
bitmapHeight)
{
return new BufferedImage(
bitmapWidth, bitmapHeight, BufferedImage.TYPE_INT_ARGB);
}
/**
* Returns a page viewport.
* @param pageNum the page number
* @return the requested PageViewport instance
* @exception FOPException If the page is out of range.
*/
public PageViewport getPageViewport(int pageNum) throws FOPException {
if (pageNum < 0 || pageNum >= pageViewportList.size()) {
throw new FOPException("Requested page number is out of
range: " + pageNum
+ "; only " + pageViewportList.size()
+ " page(s) available.");
}
return (PageViewport) pageViewportList.get(pageNum);
}
/**
* Generates a desired page from the renderer's page viewport list.
*
* @param pageNum the 0-based page number to generate
* @return the <code>java.awt.image.BufferedImage</code>
corresponding to
* the page or null if the page doesn't exist.
* @throws FOPException If there's a problem preparing the page image
*/
public BufferedImage getPageImage(int pageNum) throws FOPException {
return getPageImage(getPageViewport(pageNum));
}
/** Saves the graphics state of the rendering engine. */
protected void saveGraphicsState() {
// push (and save) the current graphics state
stateStack.push(state);
state = new Java2DGraphicsState(state);
}
/** Restores the last graphics state of the rendering engine. */
protected void restoreGraphicsState() {
state.dispose();
state = (Java2DGraphicsState)stateStack.pop();
}
/**
* @see org.apache.fop.render.AbstractRenderer#startVParea(CTM,
Rectangle2D)
*/
protected void startVParea(CTM ctm, Rectangle2D clippingRect) {
saveGraphicsState();
if (clippingRect != null) {
clipRect((float)clippingRect.getX() / 1000f,
(float)clippingRect.getY() / 1000f,
(float)clippingRect.getWidth() / 1000f,
(float)clippingRect.getHeight() / 1000f);
}
// Set the given CTM in the graphics state
//state.setTransform(new
AffineTransform(CTMHelper.toPDFArray(ctm)));
state.transform(new AffineTransform(CTMHelper.toPDFArray(ctm)));
}
/**
* @see org.apache.fop.render.AbstractRenderer#endVParea()
*/
protected void endVParea() {
restoreGraphicsState();
}
/**
* @see
org.apache.fop.render.AbstractPathOrientedRenderer#breakOutOfStateStack()
*/
protected List breakOutOfStateStack() {
log.debug("Block.FIXED --> break out");
List breakOutList;
breakOutList = new java.util.ArrayList();
while (!stateStack.isEmpty()) {
breakOutList.add(0, state);
//We only pop, we don't dispose, because we can use the
instances again later
state = (Java2DGraphicsState)stateStack.pop();
}
return breakOutList;
}
/**
* @see
org.apache.fop.render.AbstractPathOrientedRenderer#restoreStateStackAfterBreakOut(
* java.util.List)
*/
protected void restoreStateStackAfterBreakOut(List breakOutList) {
log.debug("Block.FIXED --> restoring context after break-out");
Iterator i = breakOutList.iterator();
while (i.hasNext()) {
Java2DGraphicsState s = (Java2DGraphicsState)i.next();
stateStack.push(state);
state = s;
}
}
/**
* @see org.apache.fop.render.AbstractPathOrientedRenderer#updateColor(
* org.apache.fop.datatypes.ColorType, boolean)
*/
protected void updateColor(Color col, boolean fill) {
state.updateColor(col);
}
/**
* @see org.apache.fop.render.AbstractPathOrientedRenderer#clip()
*/
protected void clip() {
if (currentPath == null) {
throw new IllegalStateException("No current path available!");
}
state.updateClip(currentPath);
currentPath = null;
}
/**
* @see org.apache.fop.render.AbstractPathOrientedRenderer#closePath()
*/
protected void closePath() {
currentPath.closePath();
}
/**
* @see
org.apache.fop.render.AbstractPathOrientedRenderer#lineTo(float, float)
*/
protected void lineTo(float x, float y) {
if (currentPath == null) {
currentPath = new GeneralPath();
}
currentPath.lineTo(x, y);
}
/**
* @see
org.apache.fop.render.AbstractPathOrientedRenderer#moveTo(float, float)
*/
protected void moveTo(float x, float y) {
if (currentPath == null) {
currentPath = new GeneralPath();
}
currentPath.moveTo(x, y);
}
/**
* @see
org.apache.fop.render.AbstractPathOrientedRenderer#clipRect(float,
float, float, float)
*/
protected void clipRect(float x, float y, float width, float height) {
state.updateClip(new Rectangle2D.Float(x, y, width, height));
}
/**
* @see
org.apache.fop.render.AbstractPathOrientedRenderer#fillRect(float,
float, float, float)
*/
protected void fillRect(float x, float y, float width, float height) {
state.getGraph().fill(new Rectangle2D.Float(x, y, width, height));
}
/**
* @see
org.apache.fop.render.AbstractPathOrientedRenderer#drawBorderLine(
* float, float, float, float, boolean, boolean, int,
* org.apache.fop.datatypes.ColorType)
*/
protected void drawBorderLine(float x1, float y1, float x2, float y2,
boolean horz, boolean startOrBefore, int style, Color col) {
Graphics2D g2d = state.getGraph();
drawBorderLine(new Rectangle2D.Float(x1, y1, x2 - x1, y2 - y1),
horz, startOrBefore, style, col, g2d);
}
/**
* Draw a border segment of an XSL-FO style border.
* @param lineRect the line defined by its bounding rectangle
* @param horz true for horizontal border segments, false for
vertical border segments
* @param startOrBefore true for border segments on the start or
before edge,
* false for end or after.
* @param style the border style (one of Constants.EN_DASHED etc.)
* @param col the color for the border segment
* @param g2d the Graphics2D instance to paint to
*/
public static void drawBorderLine(Rectangle2D.Float lineRect,
boolean horz, boolean startOrBefore, int style, Color col,
Graphics2D g2d) {
float x1 = lineRect.x;
float y1 = lineRect.y;
float x2 = x1 + lineRect.width;
float y2 = y1 + lineRect.height;
float w = lineRect.width;
float h = lineRect.height;
if ((w < 0) || (h < 0)) {
log.error("Negative extent received. Border won't be
painted.");
return;
}
switch (style) {
case Constants.EN_DASHED:
g2d.setColor(col);
if (horz) {
float unit = Math.abs(2 * h);
int rep = (int)(w / unit);
if (rep % 2 == 0) {
rep++;
}
unit = w / rep;
float ym = y1 + (h / 2);
BasicStroke s = new BasicStroke(h,
BasicStroke.CAP_BUTT,
BasicStroke.JOIN_MITER, 10.0f, new float[]
{unit}, 0);
g2d.setStroke(s);
g2d.draw(new Line2D.Float(x1, ym, x2, ym));
} else {
float unit = Math.abs(2 * w);
int rep = (int)(h / unit);
if (rep % 2 == 0) {
rep++;
}
unit = h / rep;
float xm = x1 + (w / 2);
BasicStroke s = new BasicStroke(w,
BasicStroke.CAP_BUTT,
BasicStroke.JOIN_MITER, 10.0f, new float[]
{unit}, 0);
g2d.setStroke(s);
g2d.draw(new Line2D.Float(xm, y1, xm, y2));
}
break;
case Constants.EN_DOTTED:
g2d.setColor(col);
if (horz) {
float unit = Math.abs(2 * h);
int rep = (int)(w / unit);
if (rep % 2 == 0) {
rep++;
}
unit = w / rep;
float ym = y1 + (h / 2);
BasicStroke s = new BasicStroke(h,
BasicStroke.CAP_ROUND,
BasicStroke.JOIN_MITER, 10.0f, new float[]
{0, unit}, 0);
g2d.setStroke(s);
g2d.draw(new Line2D.Float(x1, ym, x2, ym));
} else {
float unit = Math.abs(2 * w);
int rep = (int)(h / unit);
if (rep % 2 == 0) {
rep++;
}
unit = h / rep;
float xm = x1 + (w / 2);
BasicStroke s = new BasicStroke(w,
BasicStroke.CAP_ROUND,
BasicStroke.JOIN_MITER, 10.0f, new float[]
{0, unit}, 0);
g2d.setStroke(s);
g2d.draw(new Line2D.Float(xm, y1, xm, y2));
}
break;
case Constants.EN_DOUBLE:
g2d.setColor(col);
if (horz) {
float h3 = h / 3;
float ym1 = y1 + (h3 / 2);
float ym2 = ym1 + h3 + h3;
BasicStroke s = new BasicStroke(h3);
g2d.setStroke(s);
g2d.draw(new Line2D.Float(x1, ym1, x2, ym1));
g2d.draw(new Line2D.Float(x1, ym2, x2, ym2));
} else {
float w3 = w / 3;
float xm1 = x1 + (w3 / 2);
float xm2 = xm1 + w3 + w3;
BasicStroke s = new BasicStroke(w3);
g2d.setStroke(s);
g2d.draw(new Line2D.Float(xm1, y1, xm1, y2));
g2d.draw(new Line2D.Float(xm2, y1, xm2, y2));
}
break;
case Constants.EN_GROOVE:
case Constants.EN_RIDGE:
float colFactor = (style == EN_GROOVE ? 0.4f : -0.4f);
if (horz) {
Color uppercol = lightenColor(col, -colFactor);
Color lowercol = lightenColor(col, colFactor);
float h3 = h / 3;
float ym1 = y1 + (h3 / 2);
g2d.setStroke(new BasicStroke(h3));
g2d.setColor(uppercol);
g2d.draw(new Line2D.Float(x1, ym1, x2, ym1));
g2d.setColor(col);
g2d.draw(new Line2D.Float(x1, ym1 + h3, x2, ym1 + h3));
g2d.setColor(lowercol);
g2d.draw(new Line2D.Float(x1, ym1 + h3 + h3, x2,
ym1 + h3 + h3));
} else {
Color leftcol = lightenColor(col, -colFactor);
Color rightcol = lightenColor(col, colFactor);
float w3 = w / 3;
float xm1 = x1 + (w3 / 2);
g2d.setStroke(new BasicStroke(w3));
g2d.setColor(leftcol);
g2d.draw(new Line2D.Float(xm1, y1, xm1, y2));
g2d.setColor(col);
g2d.draw(new Line2D.Float(xm1 + w3, y1, xm1 + w3, y2));
g2d.setColor(rightcol);
g2d.draw(new Line2D.Float(xm1 + w3 + w3, y1, xm1 +
w3 + w3, y2));
}
break;
case Constants.EN_INSET:
case Constants.EN_OUTSET:
colFactor = (style == EN_OUTSET ? 0.4f : -0.4f);
if (horz) {
col = lightenColor(col, (startOrBefore ? 1 : -1) *
colFactor);
g2d.setStroke(new BasicStroke(h));
float ym1 = y1 + (h / 2);
g2d.setColor(col);
g2d.draw(new Line2D.Float(x1, ym1, x2, ym1));
} else {
col = lightenColor(col, (startOrBefore ? 1 : -1) *
colFactor);
float xm1 = x1 + (w / 2);
g2d.setStroke(new BasicStroke(w));
g2d.setColor(col);
g2d.draw(new Line2D.Float(xm1, y1, xm1, y2));
}
break;
case Constants.EN_HIDDEN:
break;
default:
g2d.setColor(col);
if (horz) {
float ym = y1 + (h / 2);
g2d.setStroke(new BasicStroke(h));
g2d.draw(new Line2D.Float(x1, ym, x2, ym));
} else {
float xm = x1 + (w / 2);
g2d.setStroke(new BasicStroke(w));
g2d.draw(new Line2D.Float(xm, y1, xm, y2));
}
}
}
/**
* @see org.apache.fop.render.AbstractRenderer#renderText(TextArea)
*/
public void renderText(TextArea text) {
renderInlineAreaBackAndBorders(text);
int rx = currentIPPosition + text.getBorderAndPaddingWidthStart();
int bl = currentBPPosition + text.getOffset() +
text.getBaselineOffset();
int saveIP = currentIPPosition;
Font font = getFontFromArea(text);
state.updateFont(font.getFontName(), font.getFontSize());
saveGraphicsState();
AffineTransform at = new AffineTransform();
at.translate(rx / 1000f, bl / 1000f);
state.transform(at);
renderText(text, state.getGraph(), font);
restoreGraphicsState();
currentIPPosition = saveIP + text.getAllocIPD();
//super.renderText(text);
// rendering text decorations
Typeface tf = (Typeface)
fontInfo.getFonts().get(font.getFontName());
int fontsize = text.getTraitAsInteger(Trait.FONT_SIZE);
renderTextDecoration(tf, fontsize, text, bl, rx);
}
/**
* Renders a TextArea to a Graphics2D instance. Adjust the
coordinate system so that the
* start of the baseline of the first character is at coordinate (0,0).
* @param text the TextArea
* @param g2d the Graphics2D to render to
* @param font the font to paint with
*/
public static void renderText(TextArea text, Graphics2D g2d, Font
font) {
Color col = (Color) text.getTrait(Trait.COLOR);
g2d.setColor(col);
float textCursor = 0;
Iterator iter = text.getChildAreas().iterator();
while (iter.hasNext()) {
InlineArea child = (InlineArea)iter.next();
if (child instanceof WordArea) {
WordArea word = (WordArea)child;
String s = word.getWord();
int[] letterAdjust = word.getLetterAdjustArray();
GlyphVector gv =
g2d.getFont().createGlyphVector(g2d.getFontRenderContext(), s);
double additionalWidth = 0.0;
if (letterAdjust == null
&& text.getTextLetterSpaceAdjust() == 0
&& text.getTextWordSpaceAdjust() == 0) {
//nop
} else {
int[] offsets = getGlyphOffsets(s, font, text,
letterAdjust);
float cursor = 0.0f;
for (int i = 0; i < offsets.length; i++) {
Point2D pt = gv.getGlyphPosition(i);
pt.setLocation(cursor, pt.getY());
gv.setGlyphPosition(i, pt);
cursor += offsets[i] / 1000f;
}
additionalWidth = cursor -
gv.getLogicalBounds().getWidth();
}
g2d.drawGlyphVector(gv, textCursor, 0);
textCursor += gv.getLogicalBounds().getWidth() +
additionalWidth;
} else if (child instanceof SpaceArea) {
SpaceArea space = (SpaceArea)child;
String s = space.getSpace();
char sp = s.charAt(0);
int tws = (space.isAdjustable()
? text.getTextWordSpaceAdjust()
+ 2 * text.getTextLetterSpaceAdjust()
: 0);
textCursor += (font.getCharWidth(sp) + tws) / 1000f;
} else {
throw new IllegalStateException("Unsupported child
element: " + child);
}
}
}
private static int[] getGlyphOffsets(String s, Font font, TextArea
text,
int[] letterAdjust) {
int textLen = s.length();
int[] offsets = new int[textLen];
for (int i = 0; i < textLen; i++) {
final char c = s.charAt(i);
final char mapped = font.mapChar(c);
int wordSpace;
if (CharUtilities.isAdjustableSpace(mapped)) {
wordSpace = text.getTextWordSpaceAdjust();
} else {
wordSpace = 0;
}
int cw = font.getWidth(mapped);
int ladj = (letterAdjust != null && i < textLen - 1 ?
letterAdjust[i + 1] : 0);
int tls = (i < textLen - 1 ?
text.getTextLetterSpaceAdjust() : 0);
offsets[i] = cw + ladj + tls + wordSpace;
}
return offsets;
}
/**
* Render leader area. This renders a leader area which is an area
with a
* rule.
*
* @param area the leader area to render
*/
public void renderLeader(Leader area) {
renderInlineAreaBackAndBorders(area);
// TODO leader-length: 25%, 50%, 75%, 100% not working yet
// TODO Colors do not work on Leaders yet
float startx = (currentIPPosition +
area.getBorderAndPaddingWidthStart()) / 1000f;
float starty = ((currentBPPosition + area.getOffset()) / 1000f);
float endx = (currentIPPosition +
area.getBorderAndPaddingWidthStart()
+ area.getIPD()) / 1000f;
Color col = (Color) area.getTrait(Trait.COLOR);
state.updateColor(col);
Line2D line = new Line2D.Float();
line.setLine(startx, starty, endx, starty);
float ruleThickness = area.getRuleThickness() / 1000f;
int style = area.getRuleStyle();
switch (style) {
case EN_SOLID:
case EN_DASHED:
case EN_DOUBLE:
drawBorderLine(startx, starty, endx, starty + ruleThickness,
true, true, style, col);
break;
case EN_DOTTED:
//TODO Dots should be shifted to the left by ruleThickness / 2
state.updateStroke(ruleThickness, style);
float rt2 = ruleThickness / 2f;
line.setLine(line.getX1(), line.getY1() + rt2,
line.getX2(), line.getY2() + rt2);
state.getGraph().draw(line);
break;
case EN_GROOVE:
case EN_RIDGE:
float half = area.getRuleThickness() / 2000f;
state.updateColor(lightenColor(col, 0.6f));
moveTo(startx, starty);
lineTo(endx, starty);
lineTo(endx, starty + 2 * half);
lineTo(startx, starty + 2 * half);
closePath();
state.getGraph().fill(currentPath);
currentPath = null;
state.updateColor(col);
if (style == EN_GROOVE) {
moveTo(startx, starty);
lineTo(endx, starty);
lineTo(endx, starty + half);
lineTo(startx + half, starty + half);
lineTo(startx, starty + 2 * half);
} else {
moveTo(endx, starty);
lineTo(endx, starty + 2 * half);
lineTo(startx, starty + 2 * half);
lineTo(startx, starty + half);
lineTo(endx - half, starty + half);
}
closePath();
state.getGraph().fill(currentPath);
currentPath = null;
case EN_NONE:
// No rule is drawn
break;
default:
} // end switch
super.renderLeader(area);
}
/**
* @see org.apache.fop.render.AbstractRenderer#renderImage(Image,
* Rectangle2D)
*/
public void renderImage(Image image, Rectangle2D pos) {
// endTextObject();
String url = image.getURL();
drawImage(url, pos);
}
/**
* @see org.apache.fop.render.AbstractPathOrientedRenderer#drawImage(
* java.lang.String, java.awt.geom.Rectangle2D, java.util.Map)
*/
protected void drawImage(String url, Rectangle2D pos, Map
foreignAttributes) {
int x = currentIPPosition + (int)Math.round(pos.getX());
int y = currentBPPosition + (int)Math.round(pos.getY());
url = ImageFactory.getURL(url);
ImageFactory fact = userAgent.getFactory().getImageFactory();
FopImage fopimage = fact.getImage(url, userAgent);
if (fopimage == null) {
return;
}
if (!fopimage.load(FopImage.DIMENSIONS)) {
return;
}
int w = fopimage.getWidth();
int h = fopimage.getHeight();
String mime = fopimage.getMimeType();
if ("text/xml".equals(mime)) {
if (!fopimage.load(FopImage.ORIGINAL_DATA)) {
return;
}
Document doc = ((XMLImage) fopimage).getDocument();
String ns = ((XMLImage) fopimage).getNameSpace();
renderDocument(doc, ns, pos, foreignAttributes);
} else if ("image/svg+xml".equals(mime)) {
if (!fopimage.load(FopImage.ORIGINAL_DATA)) {
return;
}
Document doc = ((XMLImage) fopimage).getDocument();
String ns = ((XMLImage) fopimage).getNameSpace();
renderDocument(doc, ns, pos, foreignAttributes);
} else if ("image/eps".equals(mime)) {
log.warn("EPS images are not supported by this renderer");
} else {
if (!fopimage.load(FopImage.BITMAP)) {
log.warn("Loading of bitmap failed: " + url);
return;
}
byte[] raw = fopimage.getBitmaps();
// TODO Hardcoded color and sample models, FIX ME!
ColorModel cm = new ComponentColorModel(
ColorSpace.getInstance(ColorSpace.CS_LINEAR_RGB),
new int[] {8, 8, 8},
false, false,
ColorModel.OPAQUE, DataBuffer.TYPE_BYTE);
SampleModel sampleModel = new PixelInterleavedSampleModel(
DataBuffer.TYPE_BYTE, w, h, 3, w * 3, new int[] {0,
1, 2});
DataBuffer dbuf = new DataBufferByte(raw, w * h * 3);
WritableRaster raster =
Raster.createWritableRaster(sampleModel,
dbuf, null);
java.awt.Image awtImage;
// Combine the color model and raster into a buffered image
awtImage = new BufferedImage(cm, raster, false, null);
state.getGraph().drawImage(awtImage,
(int)(x / 1000f), (int)(y / 1000f),
(int)(pos.getWidth() / 1000f),
(int)(pos.getHeight() / 1000f), null);
}
}
/**
* @see org.apache.fop.render.PrintRenderer#createRendererContext(
* int, int, int, int, java.util.Map)
*/
protected RendererContext createRendererContext(int x, int y, int
width, int height,
Map foreignAttributes) {
RendererContext context = super.createRendererContext(
x, y, width, height, foreignAttributes);
context.setProperty(Java2DRendererContextConstants.JAVA2D_STATE, state);
return context;
}
/**
* @see java.awt.print.Printable#print(java.awt.Graphics,
* java.awt.print.PageFormat, int)
*/
public int print(Graphics g, PageFormat pageFormat, int pageIndex)
throws PrinterException {
if (pageIndex >= getNumberOfPages()) {
return NO_SUCH_PAGE;
}
if (state != null) {
throw new IllegalStateException("state must be null");
}
Graphics2D graphics = (Graphics2D) g;
try {
PageViewport viewport = getPageViewport(pageIndex);
AffineTransform at = graphics.getTransform();
state = new Java2DGraphicsState(graphics, this.fontInfo, at);
// reset the current Positions
currentBPPosition = 0;
currentIPPosition = 0;
renderPageAreas(viewport.getPage());
return PAGE_EXISTS;
} catch (FOPException e) {
log.error(e);
return NO_SUCH_PAGE;
} finally {
state = null;
}
}
/** @see
org.apache.fop.render.AbstractPathOrientedRenderer#beginTextObject() */
protected void beginTextObject() {
//not necessary in Java2D
}
/** @see
org.apache.fop.render.AbstractPathOrientedRenderer#endTextObject() */
protected void endTextObject() {
//not necessary in Java2D
}
}
TIFFRenderer
//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
/*
* Copyright 1999-2006 The Apache Software Foundation.
*
* Licensed 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: TIFFRenderer.java 391332 2006-04-04 15:15:23Z jeremias $ */
package org.apache.fop.render.bitmap;
// Code originaly contributed by Oleg Tkachenko of Multiconn
International Ltd
// ([EMAIL PROTECTED]).
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.image.PixelInterleavedSampleModel;
import java.awt.image.RenderedImage;
import java.awt.image.SampleModel;
import java.awt.image.SinglePixelPackedSampleModel;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.xmlgraphics.image.GraphicsUtil;
import org.apache.xmlgraphics.image.codec.tiff.TIFFEncodeParam;
import org.apache.xmlgraphics.image.codec.tiff.TIFFField;
import org.apache.xmlgraphics.image.codec.tiff.TIFFImageDecoder;
import org.apache.xmlgraphics.image.codec.tiff.TIFFImageEncoder;
import org.apache.xmlgraphics.image.rendered.FormatRed;
import org.apache.commons.logging.Log;
import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.MimeConstants;
import org.apache.fop.render.java2d.Java2DRenderer;
/**
* <p>
* This class represents renderer to TIFF (Tagged Image File Format)
format. It
* is one of the most popular and flexible of the current public domain
raster
* file formats, which was is primarily designed for raster data
interchange.
* Supported compression types are:
* <ul>
* <li>Raw noncompressed data</li>
* <li>Byte-oriented run-length encoding "PackBits" compression.</li>
* <li>Modified Huffman Compression (CCITT Group 3 1D facsimile
compression)</li>
* <li>CCITT T.4 bilevel compression (CCITT Group 3 2D facsimile
compression)</li>
* <li>CCITT T.6 bilevel compression (CCITT Group 4 facsimile
compression)</li>
* <li>JPEG-in-TIFF compression</li>
* <li>DEFLATE lossless compression (also known as "Zip-in-TIFF")</li>
* <li>LZW compression</li>
* TODO
* <p>
* This class actually does not render itself, instead it extends
* <code>org.apache.fop.render.java2D.Java2DRenderer</code> and just encode
* rendering results into TIFF format using Batik's image codec
*/
public class TIFFRenderer extends Java2DRenderer {
/** The MIME type for tiff-Rendering */
public static final String MIME_TYPE = MimeConstants.MIME_TIFF;
/** */
private TIFFEncodeParam renderParams;
private OutputStream outputStream;
/** @see org.apache.fop.render.AbstractRenderer */
public String getMimeType() {
return MIME_TYPE;
}
/** Creates TIFF renderer. */
public TIFFRenderer() {
renderParams = new TIFFEncodeParam();
//Default to packbits compression which is widely supported
renderParams.setCompression(TIFFEncodeParam.COMPRESSION_PACKBITS);
}
private int bufferedImageType= 0;
/**
* Configure the TIFF renderer. Get the configuration to be used for
* compression
* @see
org.apache.avalon.framework.configuration.Configurable#configure(Configuration)
*/
public void configure(Configuration cfg) throws
ConfigurationException {
//TODO Support output of monochrome bitmaps (fax-style)
int comp =
cfg.getChild("compression").getAttributeAsInteger("value", 1);
String name = null;
switch (comp) {
case TIFFEncodeParam.COMPRESSION_NONE:
name = "COMPRESSION_NONE";
bufferedImageType= BufferedImage.TYPE_INT_ARGB;
break;
case TIFFEncodeParam.COMPRESSION_JPEG_TTN2:
name = "COMPRESSION_JPEG_TTN2";
bufferedImageType= BufferedImage.TYPE_INT_ARGB;
break;
case TIFFEncodeParam.COMPRESSION_PACKBITS:
name = "COMPRESSION_PACKBITS";
bufferedImageType= BufferedImage.TYPE_INT_ARGB;
break;
case TIFFEncodeParam.COMPRESSION_DEFLATE:
name = "COMPRESSION_DEFLATE";
bufferedImageType= BufferedImage.TYPE_INT_ARGB;
break;
case TIFFEncodeParam.COMPRESSION_GROUP3_1D:
name = "COMPRESSION_GROUP3_1D";
case TIFFEncodeParam.COMPRESSION_GROUP3_2D:
name = "COMPRESSION_GROUP3_2D";
case TIFFEncodeParam.COMPRESSION_GROUP4:
name = "COMPRESSION_GROUP4";
bufferedImageType= BufferedImage.TYPE_BYTE_BINARY;
break;
default:
log.info("TIFF compression not supported: " + comp);
return;
}
log.info("TIFF compression set to " + name);
}
/** @see
org.apache.fop.render.Renderer#startRenderer(java.io.OutputStream) */
public void startRenderer(OutputStream outputStream) throws
IOException {
this.outputStream = outputStream;
super.startRenderer(outputStream);
}
/** @see org.apache.fop.render.Renderer#stopRenderer() */
public void stopRenderer() throws IOException {
super.stopRenderer();
log.debug("Starting Tiff encoding ...");
//Set target resolution
float pixSzMM = userAgent.getTargetPixelUnitToMillimeter();
// num Pixs in 100 Meters
int numPix = (int)(((1000 * 100) / pixSzMM) + 0.5);
int denom = 100 * 100; // Centimeters per 100 Meters;
long [] rational = {numPix, denom};
TIFFField [] fields = {
new TIFFField(TIFFImageDecoder.TIFF_RESOLUTION_UNIT,
TIFFField.TIFF_SHORT, 1,
new char[] {(char)3}),
new TIFFField(TIFFImageDecoder.TIFF_X_RESOLUTION,
TIFFField.TIFF_RATIONAL, 1,
new long[][] {rational}),
new TIFFField(TIFFImageDecoder.TIFF_Y_RESOLUTION,
TIFFField.TIFF_RATIONAL, 1,
new long[][] {rational})
};
renderParams.setExtraFields(fields);
// Creates encoder
TIFFImageEncoder enc = new TIFFImageEncoder(outputStream,
renderParams);
// Creates lazy iterator over generated page images
Iterator pageImagesItr = new
LazyPageImagesIterator(getNumberOfPages(), log);
// The first image to be passed to enc
RenderedImage first = (RenderedImage) pageImagesItr.next();
// The other images are set to the renderParams
renderParams.setExtraImages(pageImagesItr);
// Start encoding
enc.encode(first);
// Cleaning
outputStream.flush();
clearViewportList();
log.debug("Tiff encoding done.");
}
protected BufferedImage getBufferedImage(int bitmapWidth, int
bitmapHeight)
{
return new BufferedImage(
bitmapWidth, bitmapHeight, bufferedImageType);
}
/** Private inner class to lazy page rendering. */
private class LazyPageImagesIterator implements Iterator {
/** logging instance */
private Log log;
private int count;
private int current = 0;
/**
* Main constructor
* @param c number of pages to iterate over
* @param log the logger to use (this is a hack so this
compiles under JDK 1.3)
*/
public LazyPageImagesIterator(int c, Log log) {
count = c;
this.log = log;
}
public boolean hasNext() {
return current < count;
}
public Object next() {
log.debug("[" + (current + 1) + "]");
// Renders current page as image
BufferedImage pageImage = null;
try {
pageImage = getPageImage(current++);
} catch (FOPException e) {
log.error(e);
return null;
}
switch (renderParams.getCompression()) {
// These types of compression require a monochrome image
/* these compression types are not supported by the Batik codec
case TIFFEncodeParam.COMPRESSION_GROUP3_1D:
case TIFFEncodeParam.COMPRESSION_GROUP3_2D:
case TIFFEncodeParam.COMPRESSION_GROUP4:
BufferedImage faxImage = new BufferedImage(
pageImage.getWidth(), pageImage.getHeight(),
BufferedImage.TYPE_BYTE_BINARY);
faxImage.getGraphics().drawImage(pageImage, 0, 0, null);
return faxImage;*/
default:
//Decorate the image with a packed sample model for
encoding by the codec
SinglePixelPackedSampleModel sppsm;
sppsm =
(SinglePixelPackedSampleModel)pageImage.getSampleModel();
int bands = sppsm.getNumBands();
int[] off = new int[bands];
int w = pageImage.getWidth();
int h = pageImage.getHeight();
for (int i = 0; i < bands; i++) {
off[i] = i;
}
SampleModel sm = new PixelInterleavedSampleModel(
DataBuffer.TYPE_BYTE, w, h, bands, w * bands, off);
RenderedImage rimg = new
FormatRed(GraphicsUtil.wrap(pageImage), sm);
return rimg;
}
}
public void remove() {
throw new UnsupportedOperationException(
"Method 'remove' is not supported.");
}
}
}
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