Examples of org.apache.batik.gvt.text.TextSpanLayout

• org.apache.batik.gvt.text.TextSpanLayout
  Class that performs layout of attributed text strings into glyph sets paintable by TextPainter instances. Similar to java.awt.font.TextLayout in function and purpose. Note that while this utility interface is provided for the convenience of TextPainter implementations, conforming TextPainters are not required to use this class. @see java.awt.font.TextLayout @see org.apache.batik.gvt.TextPainter @author

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  // for each text run, get its outline and append it to the overall         // outline         for (int i = 0; i < textRuns.size(); ++i) {             TextRun textRun = (TextRun)textRuns.get(i);             TextSpanLayout textRunLayout = textRun.getLayout();             GeneralPath textRunOutline =     new GeneralPath(textRunLayout.getOutline());             if (outline == null) {                outline = textRunOutline;             } else {                 outline.setWindingRule(GeneralPath.WIND_NON_ZERO);

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  TextRun textRun = (TextRun)textRuns.get(i);             AttributedCharacterIterator textRunACI = textRun.getACI();             textRunACI.first();             TextSpanLayout textRunLayout = textRun.getLayout();             if (bounds == null)                 bounds = textRunLayout.getBounds2D();             else                 bounds = bounds.createUnion(textRunLayout.getBounds2D());         }         // append any stroked decoration outlines         Shape underline = getDecorationStrokeOutline             (textRuns, TextSpanLayout.DECORATION_UNDERLINE);

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  List textRuns = getTextRuns(node, aci);         // 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);             if (textHit != null && layout.getBounds2D().contains(x,y)) {                 return new BasicTextPainter.BasicMark(node, textHit);             }         }         return null;

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  // get the list of text runs         List textRuns = getTextRuns(textNode, aci);         Iterator trI = textRuns.iterator();         int startGlyphIndex = -1;         int endGlyphIndex = -1;         TextSpanLayout startLayout=null, endLayout=null;         while (trI.hasNext()) {             TextRun tr = (TextRun)trI.next();             TextSpanLayout tsl = tr.getLayout();             if (startGlyphIndex == -1) {                 startGlyphIndex  = tsl.getGlyphIndex(result[0]);                 if (startGlyphIndex != -1)                     startLayout = tsl;             }                             if (endGlyphIndex == -1) {                 endGlyphIndex = tsl.getGlyphIndex(result[1]);                 if (endGlyphIndex != -1)                     endLayout = tsl;             }             if ((startGlyphIndex != -1) && (endGlyphIndex != -1))                 break;

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  // for each text run, append any highlight it may contain for         // the current selection         for (int i = 0; i < textRuns.size(); ++i) {             TextRun textRun = (TextRun)textRuns.get(i);             TextSpanLayout layout = textRun.getLayout();             Shape layoutHighlightedShape = layout.getHighlightShape                 (beginIndex, endIndex);             // append the highlighted shape of this layout to the             // overall hightlighted shape             if (( layoutHighlightedShape != null) &&

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  for( int l = 0 ; l < list.size() ; l++ ){                 StrokingTextPainter.TextRun run =                     (StrokingTextPainter.TextRun)list.get(l);                 TextSpanLayout layout =  run.getLayout();                 if ( layout.hasCharacterIndex(k) ){                     if ( layout.isOnATextPath() ){                                                 GVTGlyphVector vector = layout.getGlyphVector();                         //alt glyph ?                         if ( layout.isAltGlyph() ){                                 //get the number of glyph visible here                             int glyphs = vector.getNumGlyphs();                             int visibleGlyphs = 0;                             for( int h=0 ; h < glyphs ; h++ ){                                 if ( vector.isGlyphVisible(h)){                                     visibleGlyphs++;                                 }                             }                                 //get the number of character associated                                 //to this run                             int charactersInRun = 1;                             while ( layout.hasCharacterIndex( k+1 )){                                 charactersInRun++;                                 k++;                             }                             visible += (int)(charactersInRun*visibleGlyphs/glyphs);                         }                         else{                             int lastGlyphIndexFound = -1;                             do{                                 int glyphIndex = layout.getGlyphIndex(k);                                 if(  glyphIndex == -1 ){                                     //probable missing glyph                                     if ( layout.isLeftToRight() ){                                         glyphIndex = 1 + lastGlyphIndexFound;                                     }                                     else{                                         glyphIndex = ( lastGlyphIndexFound == -1)                                             ? vector.getNumGlyphs()-1                                             : lastGlyphIndexFound -1;                                     }                                 }                                 lastGlyphIndexFound = glyphIndex;                                 if ( vector.isGlyphVisible( glyphIndex ) ){                                     visible++;                                 }                                                             k++;                             }while (k <= lastChar && layout.hasCharacterIndex(k) );                             //got one too far;                             k--;                         }                                                  }                     else{                         visible++;                         while ( k < lastChar && layout.hasCharacterIndex(k+1) ){                             k++;                             visible++;                         }                     }                 }

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  for( k = startIndex ; (visible < (charnum+1)) ; k++ ){             for( int l = 0 ; l < list.size() && (visible < (charnum+1)) ; l++ ){                 run = (StrokingTextPainter.TextRun)list.get(l);                 TextSpanLayout layout = run.getLayout();                 if ( layout.hasCharacterIndex(k) ){                     if ( layout.isOnATextPath() ){                                                 GVTGlyphVector vector = layout.getGlyphVector();                         //alt glyph ?                         if ( layout.isAltGlyph() ){                                 //get the number of glyph visible here                             int glyphs = vector.getNumGlyphs();                             int visibleGlyphs = 0;                             for( int h=0 ; h < glyphs ; h++ ){                                 if ( vector.isGlyphVisible(h)){                                     visibleGlyphs++;                                 }                             }                                 //get the number of character associated                                 //to this run                             int charactersInRun = 1;                             while ( layout.hasCharacterIndex( k+1 )){                                 charactersInRun++;                                 k++;                             }                             visible += (int)(charactersInRun*visibleGlyphs/glyphs);                                                         if ( visible > charnum +1 ){                                 visible = charnum +1;                             }                         }                         else{                             int lastGlyphIndexFound = -1;                             do{                                 int glyphIndex = layout.getGlyphIndex(k);                                 if(  glyphIndex == -1 ){                                     //probable missing glyph                                     if ( layout.isLeftToRight() ){                                         glyphIndex = 1 + lastGlyphIndexFound;                                     }                                     else{                                         glyphIndex = ( lastGlyphIndexFound == -1)                                             ? vector.getNumGlyphs()-1                                             : lastGlyphIndexFound -1;                                     }                                 }                                 lastGlyphIndexFound = glyphIndex;                                 if ( vector.isGlyphVisible( glyphIndex ) ){                                     visible++;                                 }                                 k++;                             }while ((visible < (charnum+1)) && layout.hasCharacterIndex(k) );                             //got one too far                             k--;                         }                     }                     else{                         visible++;                         while ( (visible < (charnum+1)) && layout.hasCharacterIndex(k+1) ){                             k++;                             visible++;                         }                     }                 }

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  // place coords in text node coordinate system         for (int i = 0 ; i < list.size(); i++) {             StrokingTextPainter.TextRun run =                 (StrokingTextPainter.TextRun)list.get(i);             AttributedCharacterIterator aci = run.getACI();             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;     }

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  if (list != null){                     for (int i = 0 ; i < list.size(); i++) {                         StrokingTextPainter.TextRun run =                             (StrokingTextPainter.TextRun)list.get(i);                         AttributedCharacterIterator aci = run.getACI();                         TextSpanLayout layout = run.getLayout();                         float x = (float)coords.getX();                         float y = (float)coords.getY();                         TextHit textHit = layout.hitTestChar(x, y);                         if (textHit != null && layout.getBounds2D().contains(x, y)) {                             Object delimiter = aci.getAttribute                                 (GVTAttributedCharacterIterator.TextAttribute.TEXT_COMPOUND_DELIMITER);                             if (delimiter instanceof Element) {                                 return (Element)delimiter;                             }

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  int [] subCharMap = new int[end-start];             for (int i=0; i<subCharMap.length; i++) {                 subCharMap[i] = charMap[i+start-begin];             }             TextSpanLayout layout = getTextLayoutFactory().                 createTextLayout(runaci, subCharMap,                                  offset, fontRenderContext);             TextRun run = new TextRun(layout, runaci, isChunkStart);             textRuns.add(run);             Point2D layoutAdvance = layout.getAdvance2D();             if (isChunkStart)                 location = layout.getOffset();             // System.out.println("layoutAdv: " + layoutAdvance);             advance = new Point2D.Float                 ((float) (advance.getX()+layoutAdvance.getX()),                  (float) (advance.getY()+layoutAdvance.getY()));             ++endChunk;             prevTextPath = textPath;             prevTextPathAdvance = layout.getTextPathAdvance();             if (aci.setIndex(end) == CharacterIterator.DONE) break;             isChunkStart = false;         } while (true);         // System.out.println("Adv: " + advance);         return new TextChunk(beginChunk, endChunk, location, advance);

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