javax.swing.text.GlyphView Java Examples

/**
 * Determines the best location (in the model) to break
 * the given view.
 * This method attempts to break on a whitespace
 * location.  If a whitespace location can't be found, the
 * nearest character location is returned.
 *
 * @param v the view
 * @param p0 the location in the model where the
 *  fragment should start its representation >= 0
 * @param x the graphic location along the axis that the
 *  broken view would occupy >= 0; this may be useful for
 *  things like tab calculations
 * @param len specifies the distance into the view
 *  where a potential break is desired >= 0
 * @return the model location desired for a break
 * @see View#breakView
 */
@Override
public int getBoundedPosition(GlyphView v, int p0, float x, float len) {
    int ret;
    
    try {
        sync(v);
        TabExpander expander = v.getTabExpander();
        String s = v.getDocument().getText(p0, v.getEndOffset()-p0);
        int index = getTabbedTextOffset(v,s, (int)x, (int)(x+len), expander, p0, false, null);
        int p1 = p0 + index;
        ret = p1;
    } catch (BadLocationException e) {
        //e.printStackTrace();
        ret = -1;
        IOHandler.writeErrorLog(e, "EXTERNAL CODE");
    }

    return ret;
}
 

/**
 * Determine the span the glyphs given a start location
 * (for tab expansion).
 * @param exp
 * @return 
 */
@Override
public float getSpan(GlyphView v, int p0, int p1,
                     TabExpander exp, float x) {
    try {
        sync(v);
        String docText = v.getDocument().getText(p0,p1-p0);
        float width = getTabbedTextWidth(v, docText, x, exp, p0, null);
        return width;
    } catch (BadLocationException e) {
        //e.printStackTrace();
        IOHandler.writeErrorLog(e, "EXTERNAL CODE");
    }

    return 0;
}
 

private void checkKerning(GlyphView v) {
    Object testKVal = v.getElement().getAttributes().getAttribute(KEY_KERNING);
    if (testKVal != null) {
        float kValue;
        
        if (testKVal instanceof Double) {
            kValue = ((Double)testKVal).floatValue();
        } else if (testKVal instanceof Float) {
            kValue = (Float)testKVal;
        } else {
            kValue = (float)testKVal;
        }
        
        for (int i=glyphVector.getNumGlyphs()-1; i>=0; i--) {
            Point2D p=glyphVector.getGlyphPosition(i);
            p.setLocation(p.getX() + i * kValue, p.getY());
            glyphVector.setGlyphPosition(i, p);
        }
    }
}
 

public View breakView(int axis, int p0, float pos, float len) {
    if (axis == View.X_AXIS) {
        checkPainter();
        int p1 = getGlyphPainter().getBoundedPosition(this, p0, pos, len);
        try {
            // if the view contains line break char break the view
            int index = getDocument().getText(p0, p1 - p0).indexOf(WrapHTMLFactory.SEPARATOR);
            if (index >= 0) {
                GlyphView v = (GlyphView)createFragment(p0, p0 + index + 1);
                return v;
            }
        } catch (BadLocationException ex) {
            // should never happen
        }

    }
    return super.breakView(axis, p0, pos, len);
}
 

private static void retrieveGlyphViews(View root) {
    for (int i=0; i<= root.getViewCount()-1; i++) {
        View view = root.getView(i);
        if (view instanceof GlyphView && view.isVisible()) {
            if (!glyphViews.contains(view)) {
                glyphViews.add((GlyphView)view);
            }
        } else {
            retrieveGlyphViews(view);
        }
    }
}
 

private static void retrieveGlyphViews(View root) {
    for (int i=0; i<= root.getViewCount()-1; i++) {
        View view = root.getView(i);
        if (view instanceof GlyphView && view.isVisible()) {
            if (!glyphViews.contains(view)) {
                glyphViews.add((GlyphView)view);
            }
        } else {
            retrieveGlyphViews(view);
        }
    }
}
 

bug6857057() {
    Element elem = new StubBranchElement(" G L Y P H V");
    GlyphView view = new GlyphView(elem);
    float pos = elem.getStartOffset();
    float len = elem.getEndOffset() - pos;
    int res = view.getBreakWeight(View.X_AXIS, pos, len);
    if (res != View.ExcellentBreakWeight) {
        throw new RuntimeException("breakWeight != ExcellentBreakWeight");
    }
}
 

bug6857057() {
    Element elem = new StubBranchElement(" G L Y P H V");
    GlyphView view = new GlyphView(elem);
    float pos = elem.getStartOffset();
    float len = elem.getEndOffset() - pos;
    int res = view.getBreakWeight(View.X_AXIS, pos, len);
    if (res != View.ExcellentBreakWeight) {
        throw new RuntimeException("breakWeight != ExcellentBreakWeight");
    }
}
 

bug6857057() {
    Element elem = new StubBranchElement(" G L Y P H V");
    GlyphView view = new GlyphView(elem);
    float pos = elem.getStartOffset();
    float len = elem.getEndOffset() - pos;
    int res = view.getBreakWeight(View.X_AXIS, pos, len);
    if (res != View.ExcellentBreakWeight) {
        throw new RuntimeException("breakWeight != ExcellentBreakWeight");
    }
}
 

private static void retrieveGlyphViews(View root) {
    for (int i=0; i<= root.getViewCount()-1; i++) {
        View view = root.getView(i);
        if (view instanceof GlyphView && view.isVisible()) {
            if (!glyphViews.contains(view)) {
                glyphViews.add((GlyphView)view);
            }
        } else {
            retrieveGlyphViews(view);
        }
    }
}
 

bug6857057() {
    Element elem = new StubBranchElement(" G L Y P H V");
    GlyphView view = new GlyphView(elem);
    float pos = elem.getStartOffset();
    float len = elem.getEndOffset() - pos;
    int res = view.getBreakWeight(View.X_AXIS, pos, len);
    if (res != View.ExcellentBreakWeight) {
        throw new RuntimeException("breakWeight != ExcellentBreakWeight");
    }
}
 

private static void retrieveGlyphViews(View root) {
    for (int i=0; i<= root.getViewCount()-1; i++) {
        View view = root.getView(i);
        if (view instanceof GlyphView && view.isVisible()) {
            if (!glyphViews.contains(view)) {
                glyphViews.add((GlyphView)view);
            }
        } else {
            retrieveGlyphViews(view);
        }
    }
}
 

bug6857057() {
    Element elem = new StubBranchElement(" G L Y P H V");
    GlyphView view = new GlyphView(elem);
    float pos = elem.getStartOffset();
    float len = elem.getEndOffset() - pos;
    int res = view.getBreakWeight(View.X_AXIS, pos, len);
    if (res != View.ExcellentBreakWeight) {
        throw new RuntimeException("breakWeight != ExcellentBreakWeight");
    }
}
 

private static void retrieveGlyphViews(View root) {
    for (int i=0; i<= root.getViewCount()-1; i++) {
        View view = root.getView(i);
        if (view instanceof GlyphView && view.isVisible()) {
            if (!glyphViews.contains(view)) {
                glyphViews.add((GlyphView)view);
            }
        } else {
            retrieveGlyphViews(view);
        }
    }
}
 

bug6857057() {
    Element elem = new StubBranchElement(" G L Y P H V");
    GlyphView view = new GlyphView(elem);
    float pos = elem.getStartOffset();
    float len = elem.getEndOffset() - pos;
    int res = view.getBreakWeight(View.X_AXIS, pos, len);
    if (res != View.ExcellentBreakWeight) {
        throw new RuntimeException("breakWeight != ExcellentBreakWeight");
    }
}
 

private static void retrieveGlyphViews(View root) {
    for (int i=0; i<= root.getViewCount()-1; i++) {
        View view = root.getView(i);
        if (view instanceof GlyphView && view.isVisible()) {
            if (!glyphViews.contains(view)) {
                glyphViews.add((GlyphView)view);
            }
        } else {
            retrieveGlyphViews(view);
        }
    }
}
 

public GlyphVectorPainter(String text, GlyphView v) {
    if (v!=null) {
        this.text=text;
        this.font=v.getFont();
        init(v);
    }
}
 

void sync(GlyphView v) {
    try {
        String localText=v.getDocument().getText(v.getStartOffset(), v.getEndOffset()-v.getStartOffset());
        if (!localText.equals(text)) {
            this.text=localText;
            init(v);
        }
    } catch (BadLocationException e) {
        //e.printStackTrace();
        IOHandler.writeErrorLog(e, "EXTERNAL CODE");
    }
}
 

private void init(GlyphView v) {
    AffineTransform defaultTransform = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration().getDefaultTransform();
    FontRenderContext frc = new FontRenderContext(defaultTransform, true, true);
    lm = font.getLineMetrics(text.toCharArray(), 0, text.toCharArray().length, frc);

    glyphVector=font.layoutGlyphVector(frc,text.toCharArray(), 0, text.length(), 0);
    checkKerning(v);
    checkOppositeItalic(v);
    checkScale(v);
    spaceVector=font.layoutGlyphVector(frc," ".toCharArray(), 0, 1, 0);
}
 

private void checkOppositeItalic(GlyphView v) {
    TextShapeTransform value=(TextShapeTransform)v.getElement().getAttributes().getAttribute(KEY_OPPOSITE_ITALIC);
    if (value!=null) {
        isOppositeItalic=true;
        transform=value;
    }
}
 

private void checkScale(GlyphView v) {
    TextShapeTransform value=(TextShapeTransform)v.getElement().getAttributes().getAttribute(KEY_SCALE_TRANSFORM);
    if (value!=null) {
        isScale=true;
        transform=value;
    }
}
 

@Override
public GlyphView.GlyphPainter getPainter(GlyphView v, int p0, int p1) {
    try {
        String localText=v.getDocument().getText(p0, p1-p0);
        return new GlyphVectorPainter(localText, v);
    } catch (BadLocationException e) {
        //e.printStackTrace();
        IOHandler.writeErrorLog(e, "EXTERNAL CODE");
    }
    return null;
}
 

/**
 * Provides a mapping from the view coordinate space to the logical
 * coordinate space of the model.
 *
 * @param v the view containing the view coordinates
 * @param x the X coordinate
 * @param y the Y coordinate
 * @param a the allocated region to render into
 * @param biasReturn always returns <code>Position.Bias.Forward</code>
 *   as the zero-th element of this array
 * @return the location within the model that best represents the
 *  given point in the view
 * @see View#viewToModel
 */
@Override
public int viewToModel(GlyphView v, float x, float y, Shape a,
                       Position.Bias[] biasReturn) {
    int ret;
    
    try {
        if (a != null) {
            sync(v);
            Rectangle alloc = (a instanceof Rectangle) ? (Rectangle)a : a.getBounds();
            int p0 = v.getStartOffset();
            int p1 = v.getEndOffset();
            TabExpander expander = v.getTabExpander();
            String docText = v.getDocument().getText(p0, p1-p0);
            int offs = getTabbedTextOffset(v, docText, alloc.x, (int) x, expander, p0, true, null);
            int retValue = p0 + offs;
            if(retValue == p1) {
                // No need to return backward bias as GlyphPainter1 is used for
                // ltr text only.
                retValue--;
            }
            biasReturn[0] = Position.Bias.Forward;
            ret = retValue;
        } else {
            ret = -1;
        }
    } catch (BadLocationException e) {
        //e.printStackTrace();
        ret = -1;
        IOHandler.writeErrorLog(e, "EXTERNAL CODE");
    }
    return ret;
}
 

bug6857057() {
    Element elem = new StubBranchElement(" G L Y P H V");
    GlyphView view = new GlyphView(elem);
    float pos = elem.getStartOffset();
    float len = elem.getEndOffset() - pos;
    int res = view.getBreakWeight(View.X_AXIS, pos, len);
    if (res != View.ExcellentBreakWeight) {
        throw new RuntimeException("breakWeight != ExcellentBreakWeight");
    }
}
 

bug6857057() {
    Element elem = new StubBranchElement(" G L Y P H V");
    GlyphView view = new GlyphView(elem);
    float pos = elem.getStartOffset();
    float len = elem.getEndOffset() - pos;
    int res = view.getBreakWeight(View.X_AXIS, pos, len);
    if (res != View.ExcellentBreakWeight) {
        throw new RuntimeException("breakWeight != ExcellentBreakWeight");
    }
}
 

private static void retrieveGlyphViews(View root) {
    for (int i=0; i<= root.getViewCount()-1; i++) {
        View view = root.getView(i);
        if (view instanceof GlyphView && view.isVisible()) {
            if (!glyphViews.contains(view)) {
                glyphViews.add((GlyphView)view);
            }
        } else {
            retrieveGlyphViews(view);
        }
    }
}
 

bug6857057() {
    Element elem = new StubBranchElement(" G L Y P H V");
    GlyphView view = new GlyphView(elem);
    float pos = elem.getStartOffset();
    float len = elem.getEndOffset() - pos;
    int res = view.getBreakWeight(View.X_AXIS, pos, len);
    if (res != View.ExcellentBreakWeight) {
        throw new RuntimeException("breakWeight != ExcellentBreakWeight");
    }
}
 

private static void retrieveGlyphViews(View root) {
    for (int i=0; i<= root.getViewCount()-1; i++) {
        View view = root.getView(i);
        if (view instanceof GlyphView && view.isVisible()) {
            if (!glyphViews.contains(view)) {
                glyphViews.add((GlyphView)view);
            }
        } else {
            retrieveGlyphViews(view);
        }
    }
}
 

private static void retrieveGlyphViews(View root) {
    for (int i=0; i<= root.getViewCount()-1; i++) {
        View view = root.getView(i);
        if (view instanceof GlyphView && view.isVisible()) {
            if (!glyphViews.contains(view)) {
                glyphViews.add((GlyphView)view);
            }
        } else {
            retrieveGlyphViews(view);
        }
    }
}
 

bug6857057() {
    Element elem = new StubBranchElement(" G L Y P H V");
    GlyphView view = new GlyphView(elem);
    float pos = elem.getStartOffset();
    float len = elem.getEndOffset() - pos;
    int res = view.getBreakWeight(View.X_AXIS, pos, len);
    if (res != View.ExcellentBreakWeight) {
        throw new RuntimeException("breakWeight != ExcellentBreakWeight");
    }
}