Swing/GlyphVector のバックアップの現在との差分(No.3)

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class WrappedLabel extends JLabel {
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  private GlyphVector gvtext;
  private int width = -1;
  public WrappedLabel() {
    this(null);
  }

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  public WrappedLabel(String str) {
    super(str);
  }

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**サンプルコード [#b14ee862]
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 private GlyphVector getWrappedGlyphVector(String str,
                                           float wrapping,
                                           Font font,
                                           FontRenderContext frc) {
   Point2D gmPos    = new Point2D.Double(0.0d, 0.0d);
   GlyphVector gv   = font.createGlyphVector(frc, str);
   float lineheight = (float) (gv.getLogicalBounds().getHeight());
   float xpos       = 0.0f;
   float advance    = 0.0f;
   int   lineCount  = 0;
   GlyphMetrics gm;
   for(int i=0;i<gv.getNumGlyphs();i++) {
     gm = gv.getGlyphMetrics(i);
     advance = gm.getAdvance();
     if(xpos<wrapping && wrapping<=xpos+advance) {
       lineCount++;
       xpos = 0.0f;
     }
     gmPos.setLocation(xpos, lineheight*lineCount);
     gv.setGlyphPosition(i, gmPos);
     xpos = xpos + advance;
   }
   return gv;
 }
  @Override public void doLayout() {
    Insets i = getInsets();
    int w = getWidth() - i.left - i.right;
    if (w != width) {
      Font font = getFont();
      FontMetrics fm = getFontMetrics(font);
      FontRenderContext frc = fm.getFontRenderContext();
      gvtext = getWrappedGlyphVector(getText(), w, font, frc);
      width = w;
    }
    super.doLayout();
  }

 lbl2 = new JLabel() {
   protected void paintComponent(Graphics g) {
     super.paintComponent(g);
     Graphics2D g2 = (Graphics2D)g;
     if(flg) {
       int wrap = lbl2.getWidth()
                  -lbl2.getInsets().left
                  -lbl2.getInsets().right;
       FontRenderContext frc = g2.getFontRenderContext();
       gvtext = getWrappedGlyphVector(str, wrap, lbl2.getFont(), frc);
       flg    = false;
     }
     g2.setPaint(Color.red);
     g2.drawGlyphVector(gvtext,
                        lbl2.getInsets().left,
                        lbl2.getInsets().top+lbl2.getFont().getSize());
   }
 };
 lbl2.addComponentListener(new ComponentAdapter() {
   public void componentResized(ComponentEvent e) {
     flg = true;
     lbl2.repaint();
   }
 });
  @Override protected void paintComponent(Graphics g) {
    if (gvtext == null) {
      super.paintComponent(g);
    } else {
      Insets i = getInsets();
      Graphics2D g2 = (Graphics2D) g.create();
      g2.setPaint(Color.RED);
      g2.drawGlyphVector(gvtext, i.left, getFont().getSize() + i.top);
      g2.dispose();
    }
  }

-&jnlp;
-&jar;
-&zip;
  private GlyphVector getWrappedGlyphVector(
      String str, float width, Font font, FontRenderContext frc) {
    Point2D gmPos = new Point2D.Double(0d, 0d);
    GlyphVector gv = font.createGlyphVector(frc, str);
    float lineheight = (float) (gv.getLogicalBounds().getHeight());
    float xpos = 0f;
    float advance = 0f;
    int lineCount = 0;
    GlyphMetrics gm;
    for (int i = 0; i < gv.getNumGlyphs(); i++) {
      gm = gv.getGlyphMetrics(i);
      advance = gm.getAdvance();
      if (xpos < width && width <= xpos + advance) {
        lineCount++;
        xpos = 0f;
      }
      gmPos.setLocation(xpos, lineheight * lineCount);
      gv.setGlyphPosition(i, gmPos);
      xpos = xpos + advance;
    }
    return gv;
  }
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}
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