Swing/LineFocusTable のバックアップの現在との差分(No.1)

#spanend
#spanadd
enum Type { START, END }
#spanend

#spandel
#screenshot
#spanend
#spanadd
class DotBorder extends EmptyBorder {
#spanend
  private static final BasicStroke DASHED = new BasicStroke(
      1f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER,
      10f, new float[] {1f}, 0f);
  private static final Color DOT_COLOR = new Color(200, 150, 150);
  public final Set<Type> type = EnumSet.noneOf(Type.class);

#spandel
**サンプルコード [#t2e1e111]
#spanend
 private class DotBorder extends EmptyBorder {
   private final BasicStroke dashed = new BasicStroke(
       1.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 10.0f,
       new float[]{1.0f}, 0.0f);
     public boolean isBorderOpaque() {return true;}
     public DotBorder(Insets borderInsets) {
       super(borderInsets);
     }
     public DotBorder(int top, int left, int bottom, int right) {
       super(top, left, bottom, right);
     }
     public void paintBorder(
         Component c, Graphics g, int x, int y, int w, int h) {
       Graphics2D g2 = (Graphics2D)g;
       g2.translate(x,y);
     if(isFocusedBorder()) {
       g2.setPaint(new Color(200,150,150));
       g2.setStroke(dashed);
       int cbx = c.getBounds().x;
       if(cbx==0) {
         g2.drawLine(0,0,0,h);
       }
       if(end) {
         g2.drawLine(w-1,0,w-1,h);
       }
       if(cbx%2==0) {
         g2.drawLine(0,0,w,0);
         g2.drawLine(0,h-1,w,h-1);
       }else{
         g2.drawLine(1,0,w,0);
         g2.drawLine(1,h-1,w,h-1);
       }
     }
     g2.translate(-x,-y);
   }
 }
  protected DotBorder(int top, int left, int bottom, int right) {
    super(top, left, bottom, right);
  }

-&jnlp;
-&jar;
-&zip;
  @Override public boolean isBorderOpaque() {
    return true;
  }

#spandel
**解説 [#lbc490ab]
#spanend
#spandel
レンダラーでフォーカスの有るセルをJTable#getSelectionModel()#getLeadSelectionIndex()で取得し、独自ラベルで最初と最後のセルの垂直の点線、途中のセルの水平点線を描画しています。水平の点線はセルが偶数奇数ドット目のどちらで始まっているかで開始位置をずらしています。
#spanend
  @Override public void paintBorder(
      Component c, Graphics g, int x, int y, int w, int h) {
    Graphics2D g2 = (Graphics2D) g.create();
    g2.translate(x, y);
    g2.setPaint(DOT_COLOR);
    g2.setStroke(DASHED);
    if (type.contains(Type.START)) {
      g2.drawLine(0, 0, 0, h);
    }
    if (type.contains(Type.END)) {
      g2.drawLine(w - 1, 0, w - 1, h);
    }
    if (c.getBounds().x % 2 == 0) {
      g2.drawLine(0, 0, w, 0);
      g2.drawLine(0, h - 1, w, h - 1);
    } else {
      g2.drawLine(1, 0, w, 0);
      g2.drawLine(1, h - 1, w, h - 1);
    }
    g2.dispose();
  }
#spanadd
}
#spanend
#spanadd