/**
* Writes the <code>shape</code>, <code>coords</code>, <code>href</code>,
* <code>nohref</code> Attribute for the specified figure and shape.
*
* @return Returns true, if the polygon is inside of the image bounds.
*/
private boolean writePolyAttributes(IXMLElement elem, SVGFigure f, Shape shape) {
AffineTransform t = TRANSFORM.getClone(f);
if (t == null) {
t = drawingTransform;
} else {
t.preConcatenate(drawingTransform);
}
StringBuilder buf = new StringBuilder();
float[] coords = new float[6];
GeneralPath path = new GeneralPath();
for (PathIterator i = shape.getPathIterator(t, 1.5f);
! i.isDone(); i.next()) {
switch (i.currentSegment(coords)) {
case PathIterator.SEG_MOVETO :
if (buf.length() != 0) {
throw new IllegalArgumentException("Illegal shape "+shape);
}
if (buf.length() != 0) {
buf.append(',');
}
buf.append((int) coords[0]);
buf.append(',');
buf.append((int) coords[1]);
path.moveTo(coords[0], coords[1]);
break;
case PathIterator.SEG_LINETO :
if (buf.length() != 0) {
buf.append(',');
}
buf.append((int) coords[0]);
buf.append(',');
buf.append((int) coords[1]);
path.lineTo(coords[0], coords[1]);
break;
case PathIterator.SEG_CLOSE :
path.closePath();
break;
default :
throw new InternalError("Illegal segment type "+i.currentSegment(coords));
}
}
elem.setAttribute("shape", "poly");
elem.setAttribute("coords", buf.toString());
writeHrefAttribute(elem, f);
return path.intersects(new Rectangle2D.Float(bounds.x, bounds.y, bounds.width, bounds.height));
}
/**
* Writes the <code>shape</code>, <code>coords</code>, <code>href</code>,
* <code>nohref</code> Attribute for the specified figure and ellipse.
*
* @return Returns true, if the circle is inside of the image bounds.
*/
private boolean writeCircleAttributes(IXMLElement elem, SVGFigure f, Ellipse2D.Double ellipse) {
AffineTransform t = TRANSFORM.getClone(f);
if (t == null) {
t = drawingTransform;
} else {
t.preConcatenate(drawingTransform);
}
if ((t.getType() &
(AffineTransform.TYPE_UNIFORM_SCALE | AffineTransform.TYPE_TRANSLATION)) ==
t.getType() &&
ellipse.width == ellipse.height
) {
Point2D.Double start = new Point2D.Double(ellipse.x, ellipse.y);
Point2D.Double end = new Point2D.Double(ellipse.x + ellipse.width, ellipse.y + ellipse.height);
t.transform(start, start);
t.transform(end, end);
ellipse.x = Math.min(start.x, end.x);
ellipse.y = Math.min(start.y, end.y);
ellipse.width = Math.abs(start.x - end.x);
ellipse.height = Math.abs(start.y - end.y);
elem.setAttribute("shape", "circle");
elem.setAttribute("coords",
(int) (ellipse.x + ellipse.width / 2d)+","+
(int) (ellipse.y + ellipse.height / 2d)+","+
(int) (ellipse.width / 2d)
);
writeHrefAttribute(elem, f);
return bounds.intersects(ellipse.getBounds());
} else {
return writePolyAttributes(elem, f, (Shape) ellipse);
}
}
private void writePolygonElement(IXMLElement parent, SVGPathFigure f) throws IOException {
IXMLElement elem = parent.createElement("area");
if (writePolyAttributes(elem, f, new GrowStroke((float) (getStrokeTotalWidth(f) / 2d), (float) getStrokeTotalWidth(f)).
createStrokedShape(f.getChild(0).getBezierPath())
)) {
parent.addChild(elem);
}
}
private void writeEllipseElement(IXMLElement parent, SVGEllipseFigure f) throws IOException {
IXMLElement elem = parent.createElement("area");
Rectangle2D.Double r = f.getBounds();
double grow = getPerpendicularHitGrowth(f);
Ellipse2D.Double ellipse = new Ellipse2D.Double(r.x - grow, r.y - grow, r.width + grow, r.height + grow);
if (writeCircleAttributes(elem, f, ellipse)) {
parent.addChild(elem);
}
}
private void writeLineElement(IXMLElement parent, SVGPathFigure f) throws IOException {
IXMLElement elem = parent.createElement("area");
if (writePolyAttributes(elem, f, new GrowStroke((float) (getStrokeTotalWidth(f) / 2d), (float) getStrokeTotalWidth(f)).
createStrokedShape(new Line2D.Double(
f.getStartPoint(), f.getEndPoint()
)))) {
parent.addChild(elem);
}
}
private void writeHrefAttribute(IXMLElement elem, SVGFigure f) {
if (LINK.get(f) != null && LINK.get(f).trim().length() > 0) {
elem.setAttribute("href", LINK.get(f));
elem.setAttribute("title", LINK.get(f));
elem.setAttribute("alt", LINK.get(f));
} else {
elem.setAttribute("nohref", "true");
}
}
private void writeTextAreaElement(IXMLElement parent, SVGTextAreaFigure f) throws IOException {
IXMLElement elem = parent.createElement("AREA");
Rectangle2D.Double rect = f.getBounds();
double grow = getPerpendicularHitGrowth(f);
rect.x -= grow;
rect.y -= grow;
rect.width += grow;
rect.height += grow;
if (writeRectAttributes(elem, f, rect)) {
parent.addChild(elem);
}
}
private void writePathElement(IXMLElement parent, SVGPathFigure f) throws IOException {
GrowStroke growStroke = new GrowStroke((float) (getStrokeTotalWidth(f) / 2d), (float) getStrokeTotalWidth(f));
BasicStroke basicStroke = new BasicStroke((float) getStrokeTotalWidth(f));
for (Figure child : f.getChildren()) {
SVGBezierFigure bezier = (SVGBezierFigure) child;
IXMLElement elem = parent.createElement("area");
if (bezier.isClosed()) {
writePolyAttributes(elem, f, growStroke.
createStrokedShape(bezier.getBezierPath())
);
} else {
writePolyAttributes(elem, f, basicStroke.
createStrokedShape(bezier.getBezierPath())
);
}
parent.addChild(elem);
}
}
private void writeRectElement(IXMLElement parent, SVGRectFigure f) throws IOException {
IXMLElement elem = parent.createElement("AREA");
boolean isContained;
if (f.getArcHeight() == 0 && f.getArcWidth() == 0) {
Rectangle2D.Double rect = f.getBounds();
double grow = getPerpendicularHitGrowth(f);
rect.x -= grow;
rect.y -= grow;
rect.width += grow;
rect.height += grow;
isContained = writeRectAttributes(elem, f, rect);
} else {
isContained = writePolyAttributes(elem, f,
new GrowStroke((float) (getStrokeTotalWidth(f) / 2d), (float) getStrokeTotalWidth(f)).
createStrokedShape(new RoundRectangle2D.Double(
f.getX(), f.getY(), f.getWidth(), f.getHeight(),
f.getArcWidth(), f.getArcHeight()
)));
}
if (isContained) {
parent.addChild(elem);
}
}
/**
* Writes the <code>shape</code>, <code>coords</code>, <code>href</code>,
* <code>nohref</code> Attribute for the specified figure and rectangle.
*
* @return Returns true, if the rect is inside of the image bounds.
*/
private boolean writeRectAttributes(IXMLElement elem, SVGFigure f, Rectangle2D.Double rect) {
AffineTransform t = TRANSFORM.getClone(f);
if (t == null) {
t = drawingTransform;
} else {
t.preConcatenate(drawingTransform);
}
if ((t.getType() &
(AffineTransform.TYPE_UNIFORM_SCALE | AffineTransform.TYPE_TRANSLATION)) ==
t.getType()
) {
Point2D.Double start = new Point2D.Double(rect.x, rect.y);
Point2D.Double end = new Point2D.Double(rect.x + rect.width, rect.y + rect.height);
t.transform(start, start);
t.transform(end, end);
Rectangle r = new Rectangle(
(int) Math.min(start.x, end.x),
(int) Math.min(start.y, end.y),
(int) Math.abs(start.x - end.x),
(int) Math.abs(start.y - end.y)
);
elem.setAttribute("shape", "rect");
elem.setAttribute("coords",
r.x + ","+
r.y + ","+
(r.x + r.width) + ","+
(r.y + r.height)
);
writeHrefAttribute(elem, f);
return bounds.intersects(r);
} else {
return writePolyAttributes(elem, f, (Shape) rect);
}
}
private void writeImageElement(IXMLElement parent, SVGImageFigure f) {
IXMLElement elem = parent.createElement("area");
Rectangle2D.Double rect = f.getBounds();
writeRectAttributes(elem, f, rect);
parent.addChild(elem);
}