Java2DRenderer class provides the abstract technical
* foundation for all rendering with the Java2D API. Renderers like
* AWTRenderer subclass it and provide the concrete output paths.
*
* A lot of the logic is performed by AbstractRenderer. The
* class-variables currentIPPosition and
* currentBPPosition hold the position of the currently rendered
* area.
*
* Java2DGraphicsState state holds the Graphics2D,
* which is used along the whole rendering. state also acts as a
* stack (state.push() and state.pop()).
*
* The rendering process is basically always the same: *
* void renderXXXXX(Area area) {
* //calculate the currentPosition
* state.updateFont(name, size, null);
* state.updateColor(ct, false, null);
* state.getGraph.draw(new Shape(args));
* }
*
*/
public abstract class Java2DRenderer extends AbstractRenderer implements Printable {
/** The MIME type for Java2D-Rendering */
public static final String MIME_TYPE = "application/X-Java2D";
/** 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;
/** a Line2D.Float used to draw text decorations and leaders */
protected Line2D.Float line = new Line2D.Float();
/** Font configuration */
protected FontInfo fontInfo;
protected Map fontNames = new java.util.Hashtable();
protected Map fontStyles = new java.util.Hashtable();
/** true if the renderer has finished rendering all the pages */
public boolean renderingDone;
/** 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.AbstractRenderer */
public String getMimeType() {
return MIME_TYPE;
}
/**
* @see org.apache.fop.render.Renderer#setupFontInfo(org.apache.fop.fonts.FontInfo)
*/
public void setupFontInfo(FontInfo inFontInfo) {
// create a temp Image to test font metrics on
fontInfo = inFontInfo;
BufferedImage fontImage = new BufferedImage(100, 100,
BufferedImage.TYPE_INT_RGB);
FontSetup.setup(fontInfo, fontImage.createGraphics());
}
/**
* Sets the new scale factor.
* @param newScaleFactor ]0 ; 1]
*/
public void setScaleFactor(double newScaleFactor) {
scaleFactor = newScaleFactor;
}
public double getScaleFactor() {
return scaleFactor;
}
public void startRenderer(OutputStream out) throws IOException {
// do nothing by default
}
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 The 0-based current page number */
public int getCurrentPageNumber() {
return currentPageNumber;
}
/** @param 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, in case 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 PageViewport object supplied by
* the Area Tree
* @see org.apache.fop.render.Renderer
*/
public void renderPage(PageViewport pageViewport)
throws IOException, FOPException {
pageViewportList.add(pageViewport.clone()); // FIXME clone
currentPageNumber++;
}
/**
* Generates a desired page from the renderer's page viewport list.
*
* @param pageViewport the PageViewport to be rendered
* @return the java.awt.image.BufferedImage corresponding to
* the page or null if the page doesn't exist.
*/
public BufferedImage getPageImage(PageViewport pageViewport) {
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
* FOUserAgent.DEFAULT_PX2MM / userAgent.getPixelUnitToMillimeter();
double scaleY = scaleFactor
* FOUserAgent.DEFAULT_PX2MM / userAgent.getPixelUnitToMillimeter();
int bitmapWidth = (int) ((pageWidth * scaleX) + 0.5);
int bitmapHeight = (int) ((pageHeight * scaleY) + 0.5);
BufferedImage currentPageImage = new BufferedImage(
bitmapWidth, bitmapHeight, BufferedImage.TYPE_INT_ARGB);
// FIXME TYPE_BYTE_BINARY ?
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);
// reset the current Positions
currentBPPosition = 0;
currentIPPosition = 0;
// this toggles the rendering of all areas
renderPageAreas(pageViewport.getPage());
return currentPageImage;
}
/**
* Returns the page viewport
* @param pageNum the page number
* @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 java.awt.image.BufferedImage corresponding to
* the page or null if the page doesn't exist.
* @throws FOPException
*/
public BufferedImage getPageImage(int pageNum) throws FOPException {
return getPageImage(getPageViewport(pageNum));
}
/**
* @see org.apache.fop.render.AbstractRenderer#startVParea(CTM)
*/
protected void startVParea(CTM ctm) {
// push (and save) the current graphics state
state.push();
// Set the given CTM in the graphics state
state.setTransform(new AffineTransform(CTMHelper.toPDFArray(ctm)));
// TODO Set clip?
}
/**
* @see org.apache.fop.render.AbstractRenderer#endVParea()
*/
protected void endVParea() {
state.pop();
}
/**
* @see org.apache.fop.render.AbstractRenderer#renderBlockViewport(BlockViewport,
* List)
*/
protected void renderBlockViewport(BlockViewport bv, List children) {
// clip and position viewport if necessary
// save positions
int saveIP = currentIPPosition;
int saveBP = currentBPPosition;
CTM ctm = bv.getCTM();
int borderPaddingStart = bv.getBorderAndPaddingWidthStart();
int borderPaddingBefore = bv.getBorderAndPaddingWidthBefore();
float x, y;
x = (float) (bv.getXOffset() + containingIPPosition) / 1000f;
y = (float) (bv.getYOffset() + containingBPPosition) / 1000f;
if (bv.getPositioning() == Block.ABSOLUTE
|| bv.getPositioning() == Block.FIXED) {
// TODO not tested yet
// For FIXED, we need to break out of the current viewports to the
// one established by the page. We save the state stack for
// restoration
// after the block-container has been painted. See below.
List breakOutList = null;
if (bv.getPositioning() == Block.FIXED) {
log.debug("Block.FIXED --> break out");
breakOutList = new java.util.ArrayList();
Graphics2D graph;
while (true) {
graph = state.getGraph();
if (state.pop() == null) {
break;
}
breakOutList.add(0, graph); // Insert because of
// stack-popping
log.debug("Adding to break out list: " + graph);
}
}
CTM tempctm = new CTM(containingIPPosition, containingBPPosition);
ctm = tempctm.multiply(ctm);
// This is the content-rect
float width = (float) bv.getIPD() / 1000f;
float height = (float) bv.getBPD() / 1000f;
// Adjust for spaces (from margin or indirectly by start-indent etc.
Integer spaceStart = (Integer) bv.getTrait(Trait.SPACE_START);
if (spaceStart != null) {
x += spaceStart.floatValue() / 1000;
}
Integer spaceBefore = (Integer) bv.getTrait(Trait.SPACE_BEFORE);
if (spaceBefore != null) {
y += spaceBefore.floatValue() / 1000;
}
float bpwidth = (borderPaddingStart + bv
.getBorderAndPaddingWidthEnd()) / 1000f;
float bpheight = (borderPaddingBefore + bv
.getBorderAndPaddingWidthAfter()) / 1000f;
drawBackAndBorders(bv, x, y, width + bpwidth, height + bpheight);
// Now adjust for border/padding
x += borderPaddingStart / 1000f;
y += borderPaddingBefore / 1000f;
if (bv.getClip()) {
// saves the graphics state in a stack
state.push();
clip(x, y, width, height);
}
startVParea(ctm);
renderBlocks(bv, children);
endVParea();
if (bv.getClip()) {
// restores the last graphics state from the stack
state.pop();
}
// clip if necessary
if (breakOutList != null) {
log.debug(
"Block.FIXED --> restoring context after break-out");
Graphics2D graph;
Iterator i = breakOutList.iterator();
while (i.hasNext()) {
graph = (Graphics2D) i.next();
log.debug("Restoring: " + graph);
state.push();
}
}
currentIPPosition = saveIP;
currentBPPosition = saveBP;
} else { // orientation = Block.STACK or RELATIVE
Integer spaceBefore = (Integer) bv.getTrait(Trait.SPACE_BEFORE);
if (spaceBefore != null) {
currentBPPosition += spaceBefore.intValue();
}
// borders and background in the old coordinate system
handleBlockTraits(bv);
CTM tempctm = new CTM(containingIPPosition, currentBPPosition
+ containingBPPosition);
ctm = tempctm.multiply(ctm);
// Now adjust for border/padding
x += borderPaddingStart / 1000f;
y += borderPaddingBefore / 1000f;
// clip if necessary
if (bv.getClip()) {
// saves the graphics state in a stack
state.push();
float width = (float) bv.getIPD() / 1000f;
float height = (float) bv.getBPD() / 1000f;
clip(x, y, width, height);
}
if (ctm != null) {
startVParea(ctm);
}
renderBlocks(bv, children);
if (ctm != null) {
endVParea();
}
if (bv.getClip()) {
// restores the last graphics state from the stack
state.pop();
}
currentIPPosition = saveIP;
currentBPPosition = saveBP;
// Adjust BP position (alloc BPD + spaces)
if (spaceBefore != null) {
currentBPPosition += spaceBefore.intValue();
}
currentBPPosition += (int) (bv.getAllocBPD());
Integer spaceAfter = (Integer) bv.getTrait(Trait.SPACE_AFTER);
if (spaceAfter != null) {
currentBPPosition += spaceAfter.intValue();
}
}
}
/**
* Clip an area.
*/
protected void clip() {
// TODO via AWTGraphicsState.updateClip();
// currentStream.add("W\n");
// currentStream.add("n\n");
}
/**
* Clip an area. write a clipping operation given coordinates in the current
* transform.
*
* @param x the x coordinate
* @param y the y coordinate
* @param width the width of the area
* @param height the height of the area
*/
protected void clip(float x, float y, float width, float height) {
// TODO via AWTGraphicsState.updateClip();
// currentStream.add(x + " " + y + " " + width + " " + height + "
// re ");
clip();
}
/**
* Draw the background and borders. This draws the background and border
* traits for an area given the position.
*
* @param block the area to get the traits from
* @param startx the start x position
* @param starty the start y position
* @param width the width of the area
* @param height the height of the area
*/
protected void drawBackAndBorders(Area area, float startx, float starty,
float width, float height) {
BorderProps bpsBefore = (BorderProps) area
.getTrait(Trait.BORDER_BEFORE);
BorderProps bpsAfter = (BorderProps) area.getTrait(Trait.BORDER_AFTER);
BorderProps bpsStart = (BorderProps) area.getTrait(Trait.BORDER_START);
BorderProps bpsEnd = (BorderProps) area.getTrait(Trait.BORDER_END);
// draw background
Trait.Background back;
back = (Trait.Background) area.getTrait(Trait.BACKGROUND);
if (back != null) {
// Calculate padding rectangle
float sx = startx;
float sy = starty;
float paddRectWidth = width;
float paddRectHeight = height;
if (bpsStart != null) {
sx += bpsStart.width / 1000f;
paddRectWidth -= bpsStart.width / 1000f;
}
if (bpsBefore != null) {
sy += bpsBefore.width / 1000f;
paddRectHeight -= bpsBefore.width / 1000f;
}
if (bpsEnd != null) {
paddRectWidth -= bpsEnd.width / 1000f;
}
if (bpsAfter != null) {
paddRectHeight -= bpsAfter.width / 1000f;
}
if (back.getColor() != null) {
drawBackground(back, sx, sy, paddRectWidth, paddRectHeight);
}
// background image
if (back.getFopImage() != null) {
FopImage fopimage = back.getFopImage();
if (fopimage != null && fopimage.load(FopImage.DIMENSIONS)) {
clip(sx, sy, paddRectWidth, paddRectHeight);
int horzCount = (int) ((paddRectWidth * 1000 / fopimage
.getIntrinsicWidth()) + 1.0f);
int vertCount = (int) ((paddRectHeight * 1000 / fopimage
.getIntrinsicHeight()) + 1.0f);
if (back.getRepeat() == EN_NOREPEAT) {
horzCount = 1;
vertCount = 1;
} else if (back.getRepeat() == EN_REPEATX) {
vertCount = 1;
} else if (back.getRepeat() == EN_REPEATY) {
horzCount = 1;
}
// change from points to millipoints
sx *= 1000;
sy *= 1000;
if (horzCount == 1) {
sx += back.getHoriz();
}
if (vertCount == 1) {
sy += back.getVertical();
}
for (int x = 0; x < horzCount; x++) {
for (int y = 0; y < vertCount; y++) {
// place once
Rectangle2D pos;
pos = new Rectangle2D.Float(sx
+ (x * fopimage.getIntrinsicWidth()), sy
+ (y * fopimage.getIntrinsicHeight()),
fopimage.getIntrinsicWidth(), fopimage
.getIntrinsicHeight());
putImage(back.getURL(), pos); // TODO test
}
}
} else {
log.warn(
"Can't find background image: " + back.getURL());
}
}
}
// draw border
// BORDER_BEFORE
if (bpsBefore != null) {
int borderWidth = (int) Math.round((bpsBefore.width / 1000f));
state.updateColor(bpsBefore.color);
state.getGraph().fillRect((int) startx, (int) starty, (int) width,
borderWidth);
}
// BORDER_AFTER
if (bpsAfter != null) {
int borderWidth = (int) Math.round((bpsAfter.width / 1000f));
float sy = starty + height;
state.updateColor(bpsAfter.color);
state.getGraph().fillRect((int) startx,
(int) (starty + height - borderWidth), (int) width,
borderWidth);
}
// BORDER_START
if (bpsStart != null) {
int borderWidth = (int) Math.round((bpsStart.width / 1000f));
state.updateColor(bpsStart.color);
state.getGraph().fillRect((int) startx, (int) starty, borderWidth,
(int) height);
}
// BORDER_END
if (bpsEnd != null) {
int borderWidth = (int) Math.round((bpsEnd.width / 1000f));
float sx = startx + width;
state.updateColor(bpsEnd.color);
state.getGraph().fillRect((int) (startx + width - borderWidth),
(int) starty, borderWidth, (int) height);
}
}
/**
* Draw the Background Rectangle of a given area.
*
* @param back the Trait.Background
* @param sx x coordinate of the rectangle to be filled.
* @param sy y the y coordinate of the rectangle to be filled.
* @param paddRectWidth the width of the rectangle to be filled.
* @param paddRectHeight the height of the rectangle to be filled.
*/
protected void drawBackground(Trait.Background back, float sx, float sy,
float paddRectWidth, float paddRectHeight) {
state.updateColor(back.getColor());
state.getGraph().fillRect((int) sx, (int) sy, (int) paddRectWidth,
(int) paddRectHeight);
}
/**
* Handle block traits. The block could be any sort of block with any
* positioning so this should render the traits such as border and
* background in its position.
*
* @param block the block to render the traits
*/
protected void handleBlockTraits(Block block) {
// copied from pdf
int borderPaddingStart = block.getBorderAndPaddingWidthStart();
int borderPaddingBefore = block.getBorderAndPaddingWidthBefore();
float startx = currentIPPosition / 1000f;
float starty = currentBPPosition / 1000f;
float width = block.getIPD() / 1000f;
float height = block.getBPD() / 1000f;
startx += block.getStartIndent() / 1000f;
startx -= block.getBorderAndPaddingWidthStart() / 1000f;
width += borderPaddingStart / 1000f;
width += block.getBorderAndPaddingWidthEnd() / 1000f;
height += borderPaddingBefore / 1000f;
height += block.getBorderAndPaddingWidthAfter() / 1000f;
drawBackAndBorders(block, startx, starty, width, height);
}
/**
* @see org.apache.fop.render.Renderer#renderText(TextArea)
*/
public void renderText(TextArea text) {
float x = currentIPPosition;
float y = currentBPPosition + text.getOffset(); // baseline
String name = (String) text.getTrait(Trait.FONT_NAME);
int size = ((Integer) text.getTrait(Trait.FONT_SIZE)).intValue();
state.updateFont(name, size, null);
ColorType ct = (ColorType) text.getTrait(Trait.COLOR);
state.updateColor(ct, false, null);
String s = text.getTextArea();
state.getGraph().drawString(s, x / 1000f, y / 1000f);
// getLogger().debug("renderText(): \"" + s + "\", x: "
// + x + ", y: " + y + state);
// rendering text decorations
FontMetrics metrics = fontInfo.getMetricsFor(name);
Font fs = new Font(name, metrics, size);
renderTextDecoration(fs, text, y, x);
super.renderText(text);
}
/**
* @see org.apache.fop.render.Renderer#renderCharacter(Character)
*/
public void renderCharacter(Character ch) {
float x = currentIPPosition;
float y = currentBPPosition + ch.getOffset(); // baseline
String name = (String) ch.getTrait(Trait.FONT_NAME);
int size = ((Integer) ch.getTrait(Trait.FONT_SIZE)).intValue();
state.updateFont(name, size, null);
ColorType ct = (ColorType) ch.getTrait(Trait.COLOR);
state.updateColor(ct, false, null);
String s = ch.getChar();
state.getGraph().drawString(s, x / 1000f, y / 1000f);
// getLogger().debug( "renderCharacter(): \"" + s + "\", x: "
// + x + ", y: " + y + state);
// rendering text decorations
FontMetrics metrics = fontInfo.getMetricsFor(name);
Font fs = new Font(name, metrics, size);
renderTextDecoration(fs, ch, y, x);
super.renderCharacter(ch);
}
/**
* Paints the text decoration marks.
*
* @param fs Current font
* @param inline inline area to paint the marks for
* @param baseline position of the baseline
* @param startIPD start IPD
*/
protected void renderTextDecoration(Font fs, InlineArea inline,
float baseline, float startIPD) {
boolean hasTextDeco = inline.hasUnderline() || inline.hasOverline()
|| inline.hasLineThrough();
if (hasTextDeco) {
state.updateStroke((fs.getDescender() / (-8 * 1000f)),
Constants.EN_SOLID);
float endIPD = startIPD + inline.getIPD();
if (inline.hasUnderline()) {
ColorType ct = (ColorType) inline
.getTrait(Trait.UNDERLINE_COLOR);
state.updateColor(ct, false, null);
float y = baseline - fs.getDescender() / 2;
line.setLine(startIPD / 1000f, y / 1000f, endIPD / 1000f,
y / 1000f);
state.getGraph().draw(line);
}
if (inline.hasOverline()) {
ColorType ct = (ColorType) inline
.getTrait(Trait.OVERLINE_COLOR);
state.updateColor(ct, false, null);
float y = (float) (baseline - (1.1 * fs.getCapHeight()));
line.setLine(startIPD / 1000f, y / 1000f, endIPD / 1000f,
y / 1000f);
state.getGraph().draw(line);
}
if (inline.hasLineThrough()) {
ColorType ct = (ColorType) inline
.getTrait(Trait.LINETHROUGH_COLOR);
state.updateColor(ct, false, null);
float y = (float) (baseline - (0.45 * fs.getCapHeight()));
line.setLine(startIPD / 1000f, y / 1000f, endIPD / 1000f,
y / 1000f);
state.getGraph().draw(line);
}
}
}
/**
* 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) {
// TODO leader-length: 25%, 50%, 75%, 100% not working yet
// TODO Colors do not work on Leaders yet
float startx = ((float) currentIPPosition) / 1000f;
float starty = ((currentBPPosition + area.getOffset()) / 1000f);
float endx = (currentIPPosition + area.getIPD()) / 1000f;
ColorType ct = (ColorType) area.getTrait(Trait.COLOR);
state.updateColor(ct, true, null);
line.setLine(startx, starty, endx, starty);
float thickness = area.getRuleThickness() / 1000f;
int style = area.getRuleStyle();
switch (style) {
case EN_SOLID:
case EN_DOTTED:
case EN_DASHED:
state.updateStroke(thickness, style);
state.getGraph().draw(line);
break;
case EN_DOUBLE:
state.updateStroke(thickness / 3f, EN_SOLID); // only a third
// upper Leader
line.setLine(startx, starty, endx, starty);
state.getGraph().draw(line);
// lower Leader
line.setLine(startx, starty + 2 * thickness, endx, starty + 2
* thickness);
state.getGraph().draw(line);
break;
case EN_GROOVE:
// The rule looks as though it were carved into the canvas.
// (Top/left half of the rule's thickness is the
// color specified; the other half is white.)
state.updateStroke(thickness / 2f, EN_SOLID); // only the half
// upper Leader
line.setLine(startx, starty, endx, starty);
state.getGraph().draw(line);
// lower Leader
line.setLine(startx, starty + thickness, endx, starty + thickness);
state.getGraph().setColor(Color.white);
state.getGraph().draw(line);
// TODO the implementation could be nicer, f.eg. with triangles at
// the tip of the lines. See also RenderX's implementation (looks
// like a button)
break;
case EN_RIDGE:
// The opposite of "groove", the rule looks as though it were
// coming out of the canvas. (Bottom/right half of the rule's
// thickness is the color specified; the other half is white.)
state.updateStroke(thickness / 2f, EN_SOLID); // only the half
// lower Leader
line.setLine(startx, starty + thickness, endx, starty + thickness);
state.getGraph().draw(line);
// upperLeader
line.setLine(startx, starty, endx, starty);
state.getGraph().setColor(Color.white);
state.getGraph().draw(line);
// TODO the implementation could be nicer, f.eg. with triangles at
// the tip of the lines. See also RenderX's implementation (looks
// like a button)
break;
case EN_NONE:
// No rule is drawn
break;
} // 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();
putImage(url, pos);
}
/**
* draws an image
*
* @param url URL of the bitmap
* @param pos Position of the bitmap
*/
protected void putImage(String pUrl, Rectangle2D pos) {
int x = currentIPPosition; // TODO + area.getXOffset();
int y = currentBPPosition;
String url = ImageFactory.getURL(pUrl);
ImageFactory fact = ImageFactory.getInstance();
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);
} else if ("image/svg+xml".equals(mime)) {
if (!fopimage.load(FopImage.ORIGINAL_DATA)) {
return;
}
Document doc = ((XMLImage) fopimage).getDocument();
renderSVGDocument(doc, pos); // TODO check if ok.
} else if ("image/eps".equals(mime)) {
log.warn("EPS images are not supported by this renderer");
currentBPPosition += (h * 1000);
} else if ("image/jpeg".equals(mime)) {
if (!fopimage.load(FopImage.ORIGINAL_DATA)) {
return;
}
// TODO Load JPEGs rather through fopimage.load(FopImage.BITMAP),
// but JpegImage will need to be extended for that
// url = url.substring(7);
// url = "C:/eclipse/myWorkbenches/fop4/xml-fop/examples/fo" + url;
java.awt.Image awtImage = new javax.swing.ImageIcon(url).getImage();
state.getGraph().drawImage(awtImage, (int) (x / 1000f),
(int) (y / 1000f), (int) w, h, null);
currentBPPosition += (h * 1000);
} 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) w, h, null);
currentBPPosition += (h * 1000);
}
}
/**
* @see org.apache.fop.render.AbstractRenderer#renderForeignObject(ForeignObject,
* Rectangle2D)
*/
public void renderForeignObject(ForeignObject fo, Rectangle2D pos) {
Document doc = fo.getDocument();
String ns = fo.getNameSpace();
if (SVGDOMImplementation.SVG_NAMESPACE_URI.equals(ns)) {
renderSVGDocument(doc, pos);
} else {
renderDocument(doc, ns, pos);
}
// this.currentXPosition += area.getContentWidth();
}
/**
* Renders an XML document (SVG for example).
*
* @param doc DOM document representing the XML document
* @param ns Namespace for the document
* @param pos Position on the page
*/
public void renderDocument(Document doc, String ns, Rectangle2D pos) {
RendererContext context;
context = new RendererContext(this, MIME_TYPE);
context.setUserAgent(userAgent);
// TODO implement
/*
* context.setProperty(PDFXMLHandler.PDF_DOCUMENT, pdfDoc);
* context.setProperty(PDFXMLHandler.OUTPUT_STREAM, ostream);
* context.setProperty(PDFXMLHandler.PDF_STATE, currentState);
* context.setProperty(PDFXMLHandler.PDF_PAGE, currentPage);
* context.setProperty(PDFXMLHandler.PDF_CONTEXT, currentContext == null ?
* currentPage : currentContext);
* context.setProperty(PDFXMLHandler.PDF_CONTEXT, currentContext);
* context.setProperty(PDFXMLHandler.PDF_STREAM, currentStream);
* context.setProperty(PDFXMLHandler.PDF_XPOS, new
* Integer(currentIPPosition + (int) pos.getX()));
* context.setProperty(PDFXMLHandler.PDF_YPOS, new
* Integer(currentBPPosition + (int) pos.getY()));
* context.setProperty(PDFXMLHandler.PDF_FONT_INFO, fontInfo);
* context.setProperty(PDFXMLHandler.PDF_FONT_NAME, currentFontName);
* context.setProperty(PDFXMLHandler.PDF_FONT_SIZE, new
* Integer(currentFontSize));
* context.setProperty(PDFXMLHandler.PDF_WIDTH, new Integer((int)
* pos.getWidth())); context.setProperty(PDFXMLHandler.PDF_HEIGHT, new
* Integer((int) pos.getHeight())); renderXML(userAgent, context, doc,
* ns);
*/
}
protected void renderSVGDocument(Document doc, Rectangle2D pos) {
int x = currentIPPosition; // TODO + area.getXOffset();
int y = currentBPPosition;
RendererContext context;
context = new RendererContext(this, MIME_TYPE);
context.setUserAgent(userAgent);
SVGUserAgent ua = new SVGUserAgent(context.getUserAgent()
.getPixelUnitToMillimeter(), new AffineTransform());
GVTBuilder builder = new GVTBuilder();
BridgeContext ctx = new BridgeContext(ua);
GraphicsNode root;
try {
root = builder.build(ctx, doc);
} catch (Exception e) {
log.error(
"svg graphic could not be built: " + e.getMessage(), e);
return;
}
float w = (float) ctx.getDocumentSize().getWidth() * 1000f;
float h = (float) ctx.getDocumentSize().getHeight() * 1000f;
// correct integer roundoff
state.getGraph().translate(x / 1000, y / 1000);
SVGSVGElement svg = ((SVGDocument) doc).getRootElement();
AffineTransform at = ViewBox.getPreserveAspectRatioTransform(svg,
w / 1000f, h / 1000f);
AffineTransform inverse = null;
try {
inverse = at.createInverse();
} catch (NoninvertibleTransformException e) {
log.warn(e);
}
if (!at.isIdentity()) {
state.getGraph().transform(at);
}
try {
root.paint(state.getGraph());
} catch (Exception e) {
e.printStackTrace();
}
if (inverse != null && !inverse.isIdentity()) {
state.getGraph().transform(inverse);
}
// correct integer roundoff
// currentState.getCurrentGraphics().translate(-x / 1000f, y / 1000f -
// pageHeight);
state.getGraph().translate(-(x + 500) / 1000,
(y + 500) / 1000 - pageHeight);
}
/**
* @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;
}
Graphics2D graphics = (Graphics2D) g;
Java2DGraphicsState oldState = state;
BufferedImage image;
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) {
e.printStackTrace();
return NO_SUCH_PAGE;
} finally {
oldState = state;
}
}
}