Examples of org.apache.batik.gvt.font.GVTGlyphVector

org.apache.batik.gvt.font.GVTGlyphVector
An interface for all GVT GlyphVector classes. @author Bella Robinson @version $Id: GVTGlyphVector.java,v 1.9 2002/08/12 20:34:34 deweese Exp $


        CharacterInformation currentInfo;
        currentInfo = getCharacterInformation(list, firstChar,charnum,aci);
        CharacterInformation lastCharacterInRunInfo = null;
        int chIndex = currentInfo.characterIndex+1;
        GVTGlyphVector vector = currentInfo.layout.getGlyphVector();
        float [] advs = currentInfo.layout.getGlyphAdvances();
        boolean [] glyphTrack = new boolean[advs.length];
        for( int k = charnum +1; k < charnum +nchars ; k++) {
            if (currentInfo.layout.isOnATextPath() ){
                for (int gi = currentInfo.glyphIndexStart;
                     gi <= currentInfo.glyphIndexEnd; gi++) {
                    if ((vector.isGlyphVisible(gi)) && !glyphTrack[gi])
                        length += advs[gi+1]-advs[gi];
                    glyphTrack[gi] = true;
                }
                CharacterInformation newInfo;
                newInfo = getCharacterInformation(list, firstChar, k, aci);
                if (newInfo.layout != currentInfo.layout) {
                    vector = newInfo.layout.getGlyphVector();
                    advs = newInfo.layout.getGlyphAdvances();
                    glyphTrack = new boolean[advs.length];
                    chIndex = currentInfo.characterIndex+1;
                }
                currentInfo = newInfo;
            } else {
                //reach the next run
                if ( currentInfo.layout.hasCharacterIndex(chIndex) ){
                    chIndex++;
                    continue;
                }


                lastCharacterInRunInfo = getCharacterInformation
                    (list,firstChar,k-1,aci);


                //if the text run change compute the distance between the 
                //first character of the run and the last
                length += distanceFirstLastCharacterInRun
                    (currentInfo,lastCharacterInRunInfo);


                currentInfo = getCharacterInformation(list,firstChar,k,aci);
                chIndex = currentInfo.characterIndex+1;
                vector  = currentInfo.layout.getGlyphVector();
                advs    = currentInfo.layout.getGlyphAdvances();
                glyphTrack = new boolean[advs.length];
                lastCharacterInRunInfo = null;
            }
        }


        if (currentInfo.layout.isOnATextPath() ){
            for (int gi = currentInfo.glyphIndexStart;
                 gi <= currentInfo.glyphIndexEnd; gi++) {
                if ((vector.isGlyphVisible(gi)) && !glyphTrack[gi])
                    length += advs[gi+1]-advs[gi];
                glyphTrack[gi] = true;
            }
        } else {
            if ( lastCharacterInRunInfo == null ){

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        if ( info == null )
            return null;


        //retrieve the glyphvector containing the glyph
        //for 'charnum'
        GVTGlyphVector it = info.layout.getGlyphVector();


        Shape b = null;


        if (info.glyphIndexStart == info.glyphIndexEnd) {
            if (it.isGlyphVisible(info.glyphIndexStart)) {
                b = it.getGlyphCellBounds(info.glyphIndexStart);
            }
        } else {
            GeneralPath path = null;
            for (int k = info.glyphIndexStart; k <= info.glyphIndexEnd; k++) {
                if (it.isGlyphVisible(k)) {
                    Rectangle2D gb = it.getGlyphCellBounds(k);
                    if (path == null) {
                        path = new GeneralPath(gb);
                    } else {
                        path.append(gb, false);
                    }

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        return getStartPoint( info );
    }


    protected Point2D getStartPoint(CharacterInformation info){


        GVTGlyphVector it = info.layout.getGlyphVector();
        if (!it.isGlyphVisible(info.glyphIndexStart))
            return null;


        Point2D b = it.getGlyphPosition(info.glyphIndexStart);


        AffineTransform glyphTransform;
        glyphTransform = it.getGlyphTransform(info.glyphIndexStart);




        //glyph are defined starting at position (0,0)
        Point2D.Float result = new Point2D.Float(0, 0);
        if ( glyphTransform != null )

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        return getEndPoint(info);
    }


    protected Point2D getEndPoint(CharacterInformation info){


        GVTGlyphVector it = info.layout.getGlyphVector();
        if (!it.isGlyphVisible(info.glyphIndexEnd))
            return null;


        Point2D b = it.getGlyphPosition(info.glyphIndexEnd);


        AffineTransform glyphTransform;
        glyphTransform = it.getGlyphTransform(info.glyphIndexEnd);


        GVTGlyphMetrics metrics = it.getGlyphMetrics(info.glyphIndexEnd);




        Point2D.Float result = new Point2D.Float
            (metrics.getHorizontalAdvance(), 0);

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        double angle = 0.0;
        int nbGlyphs = 0;


        if ( info != null ){
            GVTGlyphVector it = info.layout.getGlyphVector();


            for( int k = info.glyphIndexStart ;
                 k <= info.glyphIndexEnd ;
                 k++ ){
                if (!it.isGlyphVisible(k)) continue;


                nbGlyphs++;


                //the glyph transform contains only a scale and a rotate.
                AffineTransform glyphTransform = it.getGlyphTransform(k);
                if ( glyphTransform == null ) continue;


                double glyphAngle = 0.0;
                double cosTheta = glyphTransform.getScaleX();
                double sinTheta = glyphTransform.getShearX();

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        CharacterInformation currentInfo;
        currentInfo = getCharacterInformation(list, firstChar,charnum,aci);
        CharacterInformation lastCharacterInRunInfo = null;
        int chIndex = currentInfo.characterIndex+1;
        GVTGlyphVector vector = currentInfo.layout.getGlyphVector();
        float [] advs = currentInfo.layout.getGlyphAdvances();
        boolean [] glyphTrack = new boolean[advs.length];
        for( int k = charnum +1; k < charnum +nchars ; k++) {
            if (currentInfo.layout.isOnATextPath() ){
                for (int gi = currentInfo.glyphIndexStart;
                     gi <= currentInfo.glyphIndexEnd; gi++) {
                    if ((vector.isGlyphVisible(gi)) && !glyphTrack[gi])
                        length += advs[gi+1]-advs[gi];
                    glyphTrack[gi] = true;
                }
                CharacterInformation newInfo;
                newInfo = getCharacterInformation(list, firstChar, k, aci);
                if (newInfo.layout != currentInfo.layout) {
                    vector = newInfo.layout.getGlyphVector();
                    advs = newInfo.layout.getGlyphAdvances();
                    glyphTrack = new boolean[advs.length];
                    chIndex = currentInfo.characterIndex+1;
                }
                currentInfo = newInfo;
            } else {
                //reach the next run
                if ( currentInfo.layout.hasCharacterIndex(chIndex) ){
                    chIndex++;
                    continue;
                }


                lastCharacterInRunInfo = getCharacterInformation
                    (list,firstChar,k-1,aci);


                //if the text run change compute the distance between the
                //first character of the run and the last
                length += distanceFirstLastCharacterInRun
                    (currentInfo,lastCharacterInRunInfo);


                currentInfo = getCharacterInformation(list,firstChar,k,aci);
                chIndex = currentInfo.characterIndex+1;
                vector  = currentInfo.layout.getGlyphVector();
                advs    = currentInfo.layout.getGlyphAdvances();
                glyphTrack = new boolean[advs.length];
                lastCharacterInRunInfo = null;
            }
        }


        if (currentInfo.layout.isOnATextPath() ){
            for (int gi = currentInfo.glyphIndexStart;
                 gi <= currentInfo.glyphIndexEnd; gi++) {
                if ((vector.isGlyphVisible(gi)) && !glyphTrack[gi])
                    length += advs[gi+1]-advs[gi];
                glyphTrack[gi] = true;
            }
        } else {
            if ( lastCharacterInRunInfo == null ){

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                if (!rect.intersects(glBounds)) {
                    continue;
                }
            }
            
            GVTGlyphVector gv = layout.getGlyphVector();
            for (int g = 0; g < gv.getNumGlyphs(); g++) {
                Shape gBounds = gv.getGlyphLogicalBounds(g);
                if (gBounds != null) {
                    gBounds = at.createTransformedShape
                        (gBounds).getBounds2D();


                    if (gBounds.intersects(rect)) {

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            Rectangle2D glBounds = layout.getBounds2D();
            if (glBounds == null) continue;
            glBounds = at.createTransformedShape(glBounds).getBounds2D();
            if (!rect.intersects(glBounds)) continue;


            GVTGlyphVector gv = layout.getGlyphVector();
            for (int g = 0; g < gv.getNumGlyphs(); g++) {
                Shape gBounds = gv.getGlyphLogicalBounds(g);
                if (gBounds != null) {
                    gBounds = at.createTransformedShape
                        (gBounds).getBounds2D();


                    if (gBounds.intersects(rect)){

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        gen.writeln("BT"); //beginTextObject()


        AffineTransform localTransform = new AffineTransform();
        Point2D prevPos = null;
        GVTGlyphVector gv = layout.getGlyphVector();
        PSTextRun psRun = new PSTextRun(); //Used to split a text run into smaller runs
        for (int index = 0, c = gv.getNumGlyphs(); index < c; index++) {
            char ch = chars.charAt(index);
            boolean visibleChar = gv.isGlyphVisible(index)
                || (CharUtilities.isAnySpace(ch) && !CharUtilities.isZeroWidthSpace(ch));
            logCharacter(ch, layout, index, visibleChar);
            if (!visibleChar) {
                continue;
            }
            Point2D glyphPos = gv.getGlyphPosition(index);


            AffineTransform glyphTransform = gv.getGlyphTransform(index);
            if (log.isTraceEnabled()) {
                log.trace("pos " + glyphPos + ", transform " + glyphTransform);
            }
            if (DEBUG) {
                Shape sh = gv.getGlyphLogicalBounds(index);
                if (sh == null) {
                    sh = new Ellipse2D.Double(glyphPos.getX(), glyphPos.getY(), 2, 2);
                }
                debugShapes.append(sh, false);
            }

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            currentIndex++;
            c = ci.next();
        }


        StringCharacterIterator sci = new StringCharacterIterator(s);
        GVTGlyphVector gv = createGlyphVector(frc, sci);


        float fontHeight = fontFace.getUnitsPerEm();
        float scale = fontSize/fontHeight;


        float ascent = fontFace.getAscent() * scale;
        float descent = fontFace.getDescent() * scale;


        int numGlyphs = gv.getNumGlyphs();


        float[] baselineOffsets = new float[numGlyphs];
        for (int i = 0; i < numGlyphs; i++) {
            baselineOffsets[i] = (float)( gv.getGlyphMetrics(i).getBounds2D().getMaxY()
                                - gv.getGlyphPosition(i).getY());
        }


        float strikethroughOffset = fontFace.getStrikethroughPosition() * -scale;
        float strikethroughThickness = fontFace.getStrikethroughThickness() * scale;
        float underlineOffset = fontFace.getUnderlinePosition() * scale;

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org.apache.fop.render.ps.PSTextPainter

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