/**
* Transcodes the specified Document as an image in the specified output.
*
* @param document the document to transcode
* @param uri the uri of the document or null if any
* @param output the ouput where to transcode
* @exception org.apache.batik.transcoder.TranscoderException if an error occurred while
* transcoding
*/
protected void transcode(Document document, String uri, TranscoderOutput output)
throws TranscoderException {
if (!(document instanceof SVGOMDocument)) {
throw new TranscoderException(Messages.formatMessage("notsvg", null));
}
BridgeContext ctx = new BridgeContext(userAgent);
SVGOMDocument svgDoc = (SVGOMDocument) document;
// build the GVT tree
GraphicsNode gvtRoot = buildGVT(ctx, svgDoc);
// get the 'width' and 'height' attributes of the SVG document
width = (int) (ctx.getDocumentSize().getWidth() + 0.5);
height = (int) (ctx.getDocumentSize().getHeight() + 0.5);
SpriteGraphics2D swf2d = new SpriteGraphics2D(width, height);
gvtRoot.paint(swf2d);
tags = swf2d.getTags();
// Override width and height based on the SWF-specific bounds of the sprite contents
// However we have to correct co-ordinates back to pixels... TODO: Remove all TWIPS references!
Rect bounds = swf2d.getBounds();
width = (int) Math.rint((bounds.xMax - bounds.xMin) / 20.0);
height = (int) Math.rint((bounds.yMax - bounds.yMin) / 20.0);
}
/**
* Retrieves a Batik {@link GraphicsNode} for a given SVG.
*
* @param svgLocation an URL that specifies the SVG.
* @return the corresponding GraphicsNode.
* @throws IOException
* @throws URISyntaxException
*/
private GraphicsNode getGraphicNode(Document doc) {
// instantiates objects needed for building the node
UserAgent userAgent = new UserAgentAdapter();
DocumentLoader loader = new DocumentLoader(userAgent);
BridgeContext ctx = new BridgeContext(userAgent, loader);
ctx.setDynamic(true);
// creates node builder and builds node
GVTBuilder builder = new GVTBuilder();
return builder.build(ctx, doc);
}
/**
* Creates a <tt>GraphicsNode</tt> according to the specified parameters.
*
* @param ctx the bridge context to use
* @param e the element that describes the graphics node to build
* @return a graphics node that represents the specified element
*/
public GraphicsNode createGraphicsNode(BridgeContext ctx, Element e) {
// 'requiredFeatures', 'requiredExtensions' and 'systemLanguage'
if (!SVGUtilities.matchUserAgent(e, ctx.getUserAgent())) {
return null;
}
CompositeGraphicsNode cgn = new CompositeGraphicsNode();
// 'transform'
String s = e.getAttributeNS(null, SVG_TRANSFORM_ATTRIBUTE);
if (s.length() != 0) {
cgn.setTransform(SVGUtilities.convertTransform(e, SVG_TRANSFORM_ATTRIBUTE, s, ctx));
}
// 'visibility'
cgn.setVisible(CSSUtilities.convertVisibility(e));
// 'text-rendering' and 'color-rendering'
RenderingHints hints = null;
hints = CSSUtilities.convertColorRendering(e, hints);
hints = CSSUtilities.convertTextRendering(e, hints);
if (hints != null) {
cgn.setRenderingHints(hints);
}
// first child holds the flow region nodes
CompositeGraphicsNode cgn2 = new CompositeGraphicsNode();
cgn.add(cgn2);
// second child is the text node
FlowTextNode tn = (FlowTextNode) instantiateGraphicsNode();
tn.setLocation(getLocation(ctx, e));
// specify the text painter to use
if (ctx.getTextPainter() != null) {
tn.setTextPainter(ctx.getTextPainter());
}
textNode = tn;
cgn.add(tn);
associateSVGContext(ctx, e, cgn);
// traverse the children to add SVGContext
Node child = getFirstChild(e);
while (child != null) {
if (child.getNodeType() == Node.ELEMENT_NODE) {
addContextToChild(ctx, (Element) child);
}
child = getNextSibling(child);
}
return cgn;
}
){kind=link}
/** Reads color value from the document. */
protected Color getColor(Element element, String attributeName) {
if (getDocument() == null || getDocument() != element.getOwnerDocument()) {
return null;
}
Color color = null;
// Make sure that CSSEngine is available.
BridgeContext ctx = transcoder.initCSSEngine();
try {
color = SVGUtils.toSWTColor(element, attributeName);
} finally {
if (ctx != null) {
ctx.dispose();
}
}
return color;
}
/**
* Builds using the specified BridgeContext and element, the specified graphics node.
*
* @param ctx the bridge context to use
* @param e the element that describes the graphics node to build
* @param node the graphics node to build
*/
public void buildGraphicsNode(BridgeContext ctx, Element e, GraphicsNode node) {
CompositeGraphicsNode cgn = (CompositeGraphicsNode) node;
// build flowRegion shapes
boolean isStatic = !ctx.isDynamic();
if (isStatic) {
flowRegionNodes = new HashMap();
} else {
regionChangeListener = new RegionChangeListener();
}
CompositeGraphicsNode cgn2 = (CompositeGraphicsNode) cgn.get(0);
GVTBuilder builder = ctx.getGVTBuilder();
for (Node n = getFirstChild(e); n != null; n = getNextSibling(n)) {
if (n instanceof SVGOMFlowRegionElement) {
for (Node m = getFirstChild(n); m != null; m = getNextSibling(m)) {
if (m.getNodeType() != Node.ELEMENT_NODE) {
continue;
}
GraphicsNode gn = builder.build(ctx, (Element) m);
if (gn != null) {
cgn2.add(gn);
if (isStatic) {
flowRegionNodes.put(m, gn);
}
}
}
if (!isStatic) {
AbstractNode an = (AbstractNode) n;
XBLEventSupport es = (XBLEventSupport) an.initializeEventSupport();
es.addImplementationEventListenerNS(
SVG_NAMESPACE_URI, "shapechange", regionChangeListener, false);
}
}
}
// build text node
GraphicsNode tn = (GraphicsNode) cgn.get(1);
super.buildGraphicsNode(ctx, e, tn);
// Drop references once static build is completed.
flowRegionNodes = null;
}
private static void drawSvgToGraphics2D(Svg svg, Graphics2D g2, Dimension size)
throws IOException {
// Copied (and modified) from http://stackoverflow.com/a/12502943
String parser = XMLResourceDescriptor.getXMLParserClassName();
SAXSVGDocumentFactory factory = new SAXSVGDocumentFactory(parser);
UserAgent userAgent = new UserAgentAdapter();
DocumentLoader loader = new DocumentLoader(userAgent);
BridgeContext ctx = new BridgeContext(userAgent, loader);
ctx.setDynamicState(BridgeContext.DYNAMIC);
GVTBuilder builder = new GVTBuilder();
StringReader svgReader = new StringReader(svg.toString());
SVGDocument parsedSvgDocument = factory.createSVGDocument(null, svgReader);
GraphicsNode chartGfx = builder.build(ctx, parsedSvgDocument);
Dimension actualSize = svg.getSize();
double scaleWidth = 1.0 * size.width / actualSize.width;
double scaleHeight = 1.0 * size.height / actualSize.height;
chartGfx.setTransform(AffineTransform.getScaleInstance(scaleWidth, scaleHeight));
chartGfx.paint(g2);
}
protected void gatherRegionInfo(
BridgeContext ctx, Element rgn, float verticalAlign, List regions) {
boolean isStatic = !ctx.isDynamic();
for (Node n = getFirstChild(rgn); n != null; n = getNextSibling(n)) {
if (n.getNodeType() != Node.ELEMENT_NODE) {
continue;
}
GraphicsNode gn = isStatic ? (GraphicsNode) flowRegionNodes.get(n) : ctx.getGraphicsNode(n);
Shape s = gn.getOutline();
if (s == null) {
continue;
}
AffineTransform at = gn.getTransform();
if (at != null) {
s = at.createTransformedShape(s);
}
regions.add(new RegionInfo(s, verticalAlign));
}
}
/**
* Creates a <code>Paint</code> according to the specified parameters.
*
* @param ctx the bridge context to use
* @param paintElement the element that defines a Paint
* @param paintedElement the element referencing the paint
* @param paintedNode the graphics node on which the Paint will be applied
* @param opacity the opacity of the Paint to create
*/
public Paint createPaint(
BridgeContext ctx,
Element paintElement,
Element paintedElement,
GraphicsNode paintedNode,
float opacity) {
Element clrDef = null;
for (Node n = paintElement.getFirstChild(); n != null; n = n.getNextSibling()) {
if ((n.getNodeType() != Node.ELEMENT_NODE)) continue;
Element ref = (Element) n;
if ( // (ref instanceof SVGTests) &&
SVGUtilities.matchUserAgent(ref, ctx.getUserAgent())) {
clrDef = ref;
break;
}
}
if (clrDef == null) return Color.black;
Bridge bridge = ctx.getBridge(clrDef);
if (bridge == null || !(bridge instanceof PaintBridge)) return Color.black;
return ((PaintBridge) bridge).createPaint(ctx, clrDef, paintedElement, paintedNode, opacity);
}
public Document(InputStream stream) throws IOException {
f = new SAXSVGDocumentFactory(XMLResourceDescriptor.getXMLParserClassName());
doc = f.createSVGDocument(null, stream);
// Boot the CSS engine
userAgent = new UserAgentAdapter();
loader = new DocumentLoader(userAgent);
ctx = new BridgeContext(userAgent, loader);
ctx.setDynamicState(BridgeContext.DYNAMIC);
builder = new GVTBuilder();
rootGN = builder.build(ctx, doc);
svgRoot = doc.getRootElement();
vcss = (ViewCSS) doc.getDocumentElement();
}
protected GraphicsNode buildGVT(BridgeContext ctx, SVGOMDocument svgDoc)
throws TranscoderException {
GVTBuilder builder = new GVTBuilder();
GraphicsNode gvtRoot;
try {
gvtRoot = builder.build(ctx, svgDoc);
// dispatch an 'onload' event if needed
if (ctx.isDynamic()) {
BaseScriptingEnvironment se = new BaseScriptingEnvironment(ctx);
se.loadScripts();
se.dispatchSVGLoadEvent();
}
} catch (BridgeException ex) {
throw new TranscoderException(ex);
}
return gvtRoot;
}
/** Printable implementation */
public int print(Graphics _g, PageFormat pageFormat, int pageIndex) {
//
// On the first page, take a snapshot of the vector of
// TranscodeInputs.
//
if (printedInputs == null) {
printedInputs = (Vector) inputs.clone();
}
//
// If we have already printed each page, return
//
if (pageIndex >= printedInputs.size()) {
curIndex = -1;
if (theCtx != null) theCtx.dispose();
userAgent.displayMessage("Done");
return NO_SUCH_PAGE;
}
//
// Load a new document now if we are printing a new page
//
if (curIndex != pageIndex) {
if (theCtx != null) theCtx.dispose();
// The following call will invoke this class' transcode
// method which takes a document as an input. That method
// builds the GVT root tree.{
try {
width = (int) pageFormat.getImageableWidth();
height = (int) pageFormat.getImageableHeight();
super.transcode((TranscoderInput) printedInputs.elementAt(pageIndex), null);
curIndex = pageIndex;
} catch (TranscoderException e) {
drawError(_g, e);
return PAGE_EXISTS;
}
}
// Cast to Graphics2D to access Java 2D features
Graphics2D g = (Graphics2D) _g;
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g.setRenderingHint(
RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.setRenderingHint(
RenderingHintsKeyExt.KEY_TRANSCODING, RenderingHintsKeyExt.VALUE_TRANSCODING_PRINTING);
//
// Compute transform so that the SVG document fits on one page
//
AffineTransform t = g.getTransform();
Shape clip = g.getClip();
// System.err.println("X/Y: " + pageFormat.getImageableX() + ", " +
// pageFormat.getImageableY());
// System.err.println("W/H: " + width + ", " + height);
// System.err.println("Clip: " + clip.getBounds2D());
// Offset 0,0 to the start of the imageable Area.
g.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
//
// Append transform to selected area
//
g.transform(curTxf);
//
// Delegate rendering to painter
//
try {
root.paint(g);
} catch (Exception e) {
g.setTransform(t);
g.setClip(clip);
drawError(_g, e);
}
//
// Restore transform and clip
//
g.setTransform(t);
g.setClip(clip);
// g.setPaint(Color.black);
// g.drawString(uris[pageIndex], 30, 30);
//
// Return status indicated that we did paint a page
//
return PAGE_EXISTS;
}
/** Fills the given AttributedStringBuffer. */
protected void fillAttributedStringBuffer(
BridgeContext ctx,
Element element,
boolean top,
Integer bidiLevel,
Map initialAttributes,
AttributedStringBuffer asb,
List lnLocs) {
// 'requiredFeatures', 'requiredExtensions', 'systemLanguage' &
// 'display="none".
if ((!SVGUtilities.matchUserAgent(element, ctx.getUserAgent()))
|| (!CSSUtilities.convertDisplay(element))) {
return;
}
String s = XMLSupport.getXMLSpace(element);
boolean preserve = s.equals(SVG_PRESERVE_VALUE);
boolean prevEndsWithSpace;
Element nodeElement = element;
int elementStartChar = asb.length();
if (top) {
endLimit = startLen = asb.length();
}
if (preserve) {
endLimit = startLen;
}
Map map = initialAttributes == null ? new HashMap() : new HashMap(initialAttributes);
initialAttributes = getAttributeMap(ctx, element, null, bidiLevel, map);
Object o = map.get(TextAttribute.BIDI_EMBEDDING);
Integer subBidiLevel = bidiLevel;
if (o != null) {
subBidiLevel = (Integer) o;
}
int lineBreak = -1;
if (lnLocs.size() != 0) {
lineBreak = ((Integer) lnLocs.get(lnLocs.size() - 1)).intValue();
}
for (Node n = getFirstChild(element); n != null; n = getNextSibling(n)) {
if (preserve) {
prevEndsWithSpace = false;
} else {
int len = asb.length();
if (len == startLen) {
prevEndsWithSpace = true;
} else {
prevEndsWithSpace = (asb.getLastChar() == ' ');
int idx = lnLocs.size() - 1;
if (!prevEndsWithSpace && (idx >= 0)) {
Integer i = (Integer) lnLocs.get(idx);
if (i.intValue() == len) {
prevEndsWithSpace = true;
}
}
}
}
switch (n.getNodeType()) {
case Node.ELEMENT_NODE:
// System.out.println("Element: " + n);
if (!SVG_NAMESPACE_URI.equals(n.getNamespaceURI())) break;
nodeElement = (Element) n;
String ln = n.getLocalName();
if (ln.equals(SVG12Constants.SVG_FLOW_LINE_TAG)) {
int before = asb.length();
fillAttributedStringBuffer(
ctx, nodeElement, false, subBidiLevel, initialAttributes, asb, lnLocs);
// System.out.println("Line: " + asb.length() +
// " - '" + asb + "'");
lineBreak = asb.length();
lnLocs.add(new Integer(lineBreak));
if (before != lineBreak) {
initialAttributes = null;
}
} else if (ln.equals(SVG12Constants.SVG_FLOW_SPAN_TAG)
|| ln.equals(SVG12Constants.SVG_ALT_GLYPH_TAG)) {
int before = asb.length();
fillAttributedStringBuffer(
ctx, nodeElement, false, subBidiLevel, initialAttributes, asb, lnLocs);
if (asb.length() != before) {
initialAttributes = null;
}
} else if (ln.equals(SVG_A_TAG)) {
if (ctx.isInteractive()) {
NodeEventTarget target = (NodeEventTarget) nodeElement;
UserAgent ua = ctx.getUserAgent();
SVGAElementBridge.CursorHolder ch;
ch = new SVGAElementBridge.CursorHolder(CursorManager.DEFAULT_CURSOR);
target.addEventListenerNS(
XMLConstants.XML_EVENTS_NAMESPACE_URI,
SVG_EVENT_CLICK,
new SVGAElementBridge.AnchorListener(ua, ch),
false,
null);
target.addEventListenerNS(
XMLConstants.XML_EVENTS_NAMESPACE_URI,
SVG_EVENT_MOUSEOVER,
new SVGAElementBridge.CursorMouseOverListener(ua, ch),
false,
null);
target.addEventListenerNS(
XMLConstants.XML_EVENTS_NAMESPACE_URI,
SVG_EVENT_MOUSEOUT,
new SVGAElementBridge.CursorMouseOutListener(ua, ch),
false,
null);
}
int before = asb.length();
fillAttributedStringBuffer(
ctx, nodeElement, false, subBidiLevel, initialAttributes, asb, lnLocs);
if (asb.length() != before) {
initialAttributes = null;
}
} else if (ln.equals(SVG_TREF_TAG)) {
String uriStr = XLinkSupport.getXLinkHref((Element) n);
Element ref = ctx.getReferencedElement((Element) n, uriStr);
s = TextUtilities.getElementContent(ref);
s = normalizeString(s, preserve, prevEndsWithSpace);
if (s.length() != 0) {
int trefStart = asb.length();
Map m = new HashMap();
getAttributeMap(ctx, nodeElement, null, bidiLevel, m);
asb.append(s, m);
int trefEnd = asb.length() - 1;
TextPaintInfo tpi;
tpi = (TextPaintInfo) elemTPI.get(nodeElement);
tpi.startChar = trefStart;
tpi.endChar = trefEnd;
}
}
break;
case Node.TEXT_NODE:
case Node.CDATA_SECTION_NODE:
s = n.getNodeValue();
s = normalizeString(s, preserve, prevEndsWithSpace);
if (s.length() != 0) {
asb.append(s, map);
if (preserve) {
endLimit = asb.length();
}
initialAttributes = null;
}
}
}
if (top) {
boolean strippedSome = false;
while ((endLimit < asb.length()) && (asb.getLastChar() == ' ')) {
int idx = lnLocs.size() - 1;
int len = asb.length();
if (idx >= 0) {
Integer i = (Integer) lnLocs.get(idx);
if (i.intValue() >= len) {
i = new Integer(len - 1);
lnLocs.set(idx, i);
idx--;
while (idx >= 0) {
i = (Integer) lnLocs.get(idx);
if (i.intValue() < len - 1) break;
lnLocs.remove(idx);
idx--;
}
}
}
asb.stripLast();
strippedSome = true;
}
if (strippedSome) {
Iterator iter = elemTPI.values().iterator();
while (iter.hasNext()) {
TextPaintInfo tpi = (TextPaintInfo) iter.next();
if (tpi.endChar >= asb.length()) {
tpi.endChar = asb.length() - 1;
if (tpi.startChar > tpi.endChar) tpi.startChar = tpi.endChar;
}
}
}
}
int elementEndChar = asb.length() - 1;
TextPaintInfo tpi = (TextPaintInfo) elemTPI.get(element);
tpi.startChar = elementStartChar;
tpi.endChar = elementEndChar;
}