/**
* Returns the next GraphicsNode that matches the specified string or null if any.
*
* @param text the text to match
*/
protected GraphicsNode getNext(String text) {
if (walker == null && gvtRoot != null) {
walker = new GVTTreeWalker(gvtRoot);
}
GraphicsNode gn = walker.getCurrentGraphicsNode();
int index = match(gn, text, currentIndex + text.length());
if (index >= 0) {
currentIndex = index;
} else {
currentIndex = 0;
gn = walker.nextGraphicsNode();
while (gn != null && ((currentIndex = match(gn, text, currentIndex)) < 0)) {
currentIndex = 0;
gn = walker.nextGraphicsNode();
}
}
return gn;
}
/** Shows the current selected <tt>TextNode</tt>. */
protected void showSelectedGraphicsNode() {
GraphicsNode gn = walker.getCurrentGraphicsNode();
if (!(gn instanceof TextNode)) {
return;
}
TextNode textNode = (TextNode) gn;
// mark the selection of the substring found
String text = textNode.getText();
String pattern = search.getText();
if (!caseSensitive.isSelected()) {
text = text.toLowerCase();
pattern = pattern.toLowerCase();
}
int end = text.indexOf(pattern, currentIndex);
AttributedCharacterIterator aci = textNode.getAttributedCharacterIterator();
aci.first();
for (int i = 0; i < end; ++i) {
aci.next();
}
Mark startMark = textNode.getMarkerForChar(aci.getIndex(), true);
for (int i = 0; i < pattern.length() - 1; ++i) {
aci.next();
}
Mark endMark = textNode.getMarkerForChar(aci.getIndex(), false);
svgCanvas.select(startMark, endMark);
// zoom on the TextNode if needed
if (highlightButton.isSelected()) {
return;
}
// get the highlight shape in GVT root (global) coordinate sytem
Shape s = textNode.getHighlightShape();
AffineTransform at;
if (highlightCenterZoomButton.isSelected()) {
at = svgCanvas.getInitialTransform();
} else {
at = svgCanvas.getRenderingTransform();
}
// get the bounds of the highlight shape in the canvas coordinate system
Rectangle2D gnb = at.createTransformedShape(s).getBounds();
Dimension canvasSize = svgCanvas.getSize();
// translate the highlight region to (0, 0) in the canvas coordinate
// system
AffineTransform Tx =
AffineTransform.getTranslateInstance(
-gnb.getX() - gnb.getWidth() / 2, -gnb.getY() - gnb.getHeight() / 2);
if (highlightCenterZoomButton.isSelected()) {
// zoom on the highlight shape such as the shape takes x% of the
// canvas size
double sx = canvasSize.width / gnb.getWidth();
double sy = canvasSize.height / gnb.getHeight();
double scale = Math.min(sx, sy) / 8;
if (scale > 1) {
Tx.preConcatenate(AffineTransform.getScaleInstance(scale, scale));
}
}
Tx.preConcatenate(
AffineTransform.getTranslateInstance(canvasSize.width / 2, canvasSize.height / 2));
// take into account the initial transform
AffineTransform newRT = new AffineTransform(at);
newRT.preConcatenate(Tx);
// change the rendering transform
svgCanvas.setRenderingTransform(newRT);
}