How to use

hitTestChar

method

in

org.apache.batik.bridge.TextSpanLayout

/**
 * Returns true if the specified Point2D is inside the boundary of this
 * node, false otherwise.
 *
 * @param p the specified Point2D in the user space
 */
public boolean contains(Point2D p) {
  // <!> FIXME: should put this code in TextPaint somewhere,
  // as pointer-events support - same problem with pointer-events
  // and ShapeNode
  if (!super.contains(p)) {
    return false;
  }
  List list = getTextRuns();
  // place coords in text node coordinate system
  for (int i = 0 ; i < list.size(); i++) {
    StrokingTextPainter.TextRun run =
      (StrokingTextPainter.TextRun)list.get(i);
    TextSpanLayout layout = run.getLayout();
    float x = (float)p.getX();
    float y = (float)p.getY();
    TextHit textHit = layout.hitTestChar(x, y);
    if (textHit != null && contains(p, layout.getBounds2D())) {
      return true;
    }
  }
  return false;
}

/**
 * Returns true if the specified Point2D is inside the boundary of this
 * node, false otherwise.
 *
 * @param p the specified Point2D in the user space
 */
public boolean contains(Point2D p) {
  // <!> FIXME: should put this code in TextPaint somewhere,
  // as pointer-events support - same problem with pointer-events
  // and ShapeNode
  if (!super.contains(p)) {
    return false;
  }
  List list = getTextRuns();
  // place coords in text node coordinate system
  for (Object aList : list) {
    StrokingTextPainter.TextRun run =
        (StrokingTextPainter.TextRun) aList;
    TextSpanLayout layout = run.getLayout();
    float x = (float) p.getX();
    float y = (float) p.getY();
    TextHit textHit = layout.hitTestChar(x, y);
    if (textHit != null && contains(p, layout.getBounds2D())) {
      return true;
    }
  }
  return false;
}

AttributedCharacterIterator aci = run.getACI();
TextSpanLayout layout = run.getLayout();
TextHit textHit = layout.hitTestChar(x, y);
Rectangle2D bounds = layout.getBounds2D();
if ((textHit != null) &&

/**
 * Returns true if the specified Point2D is inside the boundary of this
 * node, false otherwise.
 *
 * @param p the specified Point2D in the user space
 */
public boolean contains(Point2D p) {
  // <!> FIXME: should put this code in TextPaint somewhere,
  // as pointer-events support - same problem with pointer-events
  // and ShapeNode
  if (!super.contains(p)) {
    return false;
  }
  List list = getTextRuns();
  // place coords in text node coordinate system
  for (Object aList : list) {
    StrokingTextPainter.TextRun run =
        (StrokingTextPainter.TextRun) aList;
    TextSpanLayout layout = run.getLayout();
    float x = (float) p.getX();
    float y = (float) p.getY();
    TextHit textHit = layout.hitTestChar(x, y);
    if (textHit != null && contains(p, layout.getBounds2D())) {
      return true;
    }
  }
  return false;
}

protected Mark hitTest(double x, double y, TextNode node) {
  AttributedCharacterIterator aci;
  aci = node.getAttributedCharacterIterator();
  if (aci == null)
    return null;
  // get the list of text runs
  List textRuns = getTextRuns(node, aci);
  if (textRuns != null) {
    // for each text run, see if its been hit
    for (int i = 0; i < textRuns.size(); ++i) {
      TextRun textRun = (TextRun)textRuns.get(i);
      TextSpanLayout layout = textRun.getLayout();
      TextHit textHit = layout.hitTestChar((float) x, (float) y);
      Rectangle2D bounds = layout.getBounds2D();
      if ((textHit != null) && 
        (bounds != null) && bounds.contains(x,y))
        return new BasicTextPainter.BasicMark(node, textHit);
    }
  }
  return null;
}

protected int getCharNumAtPosition(Element e, float x, float y){
  TextNode textNode = getTextNode();
  AttributedCharacterIterator aci;
  aci = textNode.getAttributedCharacterIterator();
  if (aci == null)
    return -1;
  //check if there is an hit
  List list = getTextRuns(textNode);
  //going backward in the list to catch the last character
  // displayed at that position
  TextHit hit = null;
  for( int i = list.size()-1 ; i>= 0 && hit == null; i-- ){
    StrokingTextPainter.TextRun textRun;
    textRun = (StrokingTextPainter.TextRun)list.get(i);
    hit = textRun.getLayout().hitTestChar(x,y);
  }
  if ( hit == null )
    return -1;
  //found an hit, check if it belong to the element
  int first = getElementStartIndex( e );
  int last  = getElementEndIndex( e );
  int hitIndex = hit.getCharIndex();
  if ( hitIndex >= first && hitIndex <= last )
    return hitIndex - first;
  return -1;
}

protected int getCharNumAtPosition(Element e, float x, float y){
  TextNode textNode = getTextNode();
  AttributedCharacterIterator aci;
  aci = textNode.getAttributedCharacterIterator();
  if (aci == null)
    return -1;
  //check if there is an hit
  List list = getTextRuns(textNode);
  //going backward in the list to catch the last character
  // displayed at that position
  TextHit hit = null;
  for( int i = list.size()-1 ; i>= 0 && hit == null; i-- ){
    StrokingTextPainter.TextRun textRun;
    textRun = (StrokingTextPainter.TextRun)list.get(i);
    hit = textRun.getLayout().hitTestChar(x,y);
  }
  if ( hit == null )
    return -1;
  //found an hit, check if it belong to the element
  int first = getElementStartIndex( e );
  int last  = getElementEndIndex( e );
  int hitIndex = hit.getCharIndex();
  if ( hitIndex >= first && hitIndex <= last )
    return hitIndex - first;
  return -1;
}

AttributedCharacterIterator aci = run.getACI();
TextSpanLayout layout = run.getLayout();
TextHit textHit = layout.hitTestChar(x, y);
Rectangle2D bounds = layout.getBounds2D();
if ((textHit != null) &&

protected int getCharNumAtPosition(Element e, float x, float y){
  TextNode textNode = getTextNode();
  AttributedCharacterIterator aci;
  aci = textNode.getAttributedCharacterIterator();
  if (aci == null)
    return -1;
  //check if there is an hit
  List list = getTextRuns(textNode);
  //going backward in the list to catch the last character
  // displayed at that position
  TextHit hit = null;
  for( int i = list.size()-1 ; i>= 0 && hit == null; i-- ){
    StrokingTextPainter.TextRun textRun;
    textRun = (StrokingTextPainter.TextRun)list.get(i);
    hit = textRun.getLayout().hitTestChar(x,y);
  }
  if ( hit == null )
    return -1;
  //found an hit, check if it belong to the element
  int first = getElementStartIndex( e );
  int last  = getElementEndIndex( e );
  int hitIndex = hit.getCharIndex();
  if ( hitIndex >= first && hitIndex <= last )
    return hitIndex - first;
  return -1;
}

AttributedCharacterIterator aci = run.getACI();
TextSpanLayout layout = run.getLayout();
TextHit textHit = layout.hitTestChar(x, y);
Rectangle2D bounds = layout.getBounds2D();
if ((textHit != null) &&

protected Mark hitTest(double x, double y, TextNode node) {
  AttributedCharacterIterator aci;
  aci = node.getAttributedCharacterIterator();
  if (aci == null)
    return null;
  // get the list of text runs
  List textRuns = getTextRuns(node, aci);
  if (textRuns != null) {
    // for each text run, see if its been hit
    for (Object textRun1 : textRuns) {
      TextRun textRun = (TextRun) textRun1;
      TextSpanLayout layout = textRun.getLayout();
      TextHit textHit = layout.hitTestChar((float) x, (float) y);
      Rectangle2D bounds = layout.getBounds2D();
      if ((textHit != null) &&
          (bounds != null) && bounds.contains(x, y))
        return new BasicMark(node, textHit);
    }
  }
  return null;
}

protected Mark hitTest(double x, double y, TextNode node) {
  AttributedCharacterIterator aci;
  aci = node.getAttributedCharacterIterator();
  if (aci == null)
    return null;
  // get the list of text runs
  List textRuns = getTextRuns(node, aci);
  if (textRuns != null) {
    // for each text run, see if its been hit
    for (Object textRun1 : textRuns) {
      TextRun textRun = (TextRun) textRun1;
      TextSpanLayout layout = textRun.getLayout();
      TextHit textHit = layout.hitTestChar((float) x, (float) y);
      Rectangle2D bounds = layout.getBounds2D();
      if ((textHit != null) &&
          (bounds != null) && bounds.contains(x, y))
        return new BasicMark(node, textHit);
    }
  }
  return null;
}