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

#spanend
#spanadd
protected int getTargetTabIndex(Point glassPt) {
#spanend
  int count = getTabCount();
  if (count == 0) {
    return -1;
  }

#spandel
#screenshot
#spanend
  Point tabPt = SwingUtilities.convertPoint(glassPane, glassPt, this);
  boolean isHorizontal = isTopBottomTabPlacement(getTabPlacement());
  for (int i = 0; i < count; ++i) {
    Rectangle r = getBoundsAt(i);

#spandel
**サンプルコード [#jf8c35ef]
#spanend
 private int getTargetTabIndex(Point pt) {
   for(int i=0;i<this.getTabCount();i++) {
     Rectangle rect = this.getBoundsAt(i);
     rect.setRect(rect.x-rect.width/2, rect.y, rect.width, rect.height);
     if(rect.contains(pt)) {
       return i;
     }
   }
   Rectangle rect = this.getBoundsAt(this.getTabCount()-1);
   rect.setRect(rect.x+rect.width/2, rect.y, rect.width+100, rect.height);
   if(rect.contains(pt)) {
     return this.getTabCount();
   }else{
     return -1;
   }
 }
    // First half.
    if (isHorizontal) {
      r.width = r.width / 2 + 1;
    } else {
      r.height = r.height / 2 + 1;
    }
    if (r.contains(tabPt)) {
      return i;
    }

 private void convertTab(int prev, int next) {
   if(next<0 || prev==next) {
     return;
   }
   Component cmp = this.getComponentAt(prev);
   String str = this.getTitleAt(prev);
   if(next==this.getTabCount()) {
     this.remove(prev);
     this.addTab(str, cmp);
     this.setSelectedIndex(this.getTabCount()-1);
   }else if(prev>next) {
     this.remove(prev);
     this.insertTab(str, null, cmp, null, next);
     this.setSelectedIndex(next);
   }else{
     this.remove(prev);
     this.insertTab(str, null, cmp, null, next-1);
     this.setSelectedIndex(next-1);
   }
 }
    // Second half.
    if (isHorizontal) {
      r.x += r.width;
    } else {
      r.y += r.height;
    }
    if (r.contains(tabPt)) {
      return i + 1;
    }
  }
  Rectangle r = getBoundsAt(getTabCount() - 1);
  r.translate(r.width * d.x / 2, r.height * d.y / 2);
  return r.contains(tabPt) ? getTabCount() : -1;
#spanadd
}
#spanend

-&jnlp;
-&jar;
-&zip;
#spanadd
private void convertTab(int prev, int next) {
#spanend
  if (next < 0 || prev == next) {
    return;
  }
  Component cmp = getComponentAt(prev);
  Component tab = getTabComponentAt(prev);
  String str    = getTitleAt(prev);
  Icon icon     = getIconAt(prev);
  String tip    = getToolTipTextAt(prev);
  boolean flg   = isEnabledAt(prev);
  int tgtindex  = prev > next ? next : next - 1;
  remove(prev);
  insertTab(str, icon, cmp, tip, tgtindex);
  setEnabledAt(tgtindex, flg);

#spandel
**解説 [#d37fac64]
#spanend
#spandel
上記のサンプルでは、JTabbedPaneのタブをドラッグすると、マウスカーソルが変更されて、ドロップされる位置に青い線を描画します。
#spanend
  // When you drag'n'drop a disabled tab, it finishes enabled and selected.
  // pointed out by dlorde
  if (flg) {
    setSelectedIndex(tgtindex);
  }

#spandel
ドラッグ中、半透明のタブゴーストを表示するかどうかを切り替えることが出来ます。
#spanend
  // I have a component in all tabs (jlabel with an X to close the tab)
  // and when i move a tab the component disappear.
  // pointed out by Daniel Dario Morales Salas
  setTabComponentAt(tgtindex, tab);
#spanadd
}
#spanend
#spanadd