Looks like you are painting your root component into the buffered image in
getRepresentation(). Try painting the TableViewHeader instead.
On Nov 11, 2011, at 11:05 AM, pan peter wrote:
> actually with following code i did manage to drag some thing while press on
> the table header, but it doesn't drag the table header, but somewhere else
> in the page, simply from (0, 0), not the actual table header location. See
> attached picture.
>
> how to fix this?
>
> tableViewHeader = (TableViewHeader)namespace.get("tableViewHeader");
> tableViewHeader.setDropTarget(new DropTarget(){
> @Override
> public DropAction dragEnter(Component arg0, Manifest arg1, int
> arg2, DropAction arg3)
> { return null; }
>
> @Override
> public void dragExit(Component arg0) { }
>
> @Override
> public DropAction dragMove(Component arg0, Manifest arg1, int
> arg2,
> int arg3, int arg4, DropAction arg5) {
> return null;
> }
>
> @Override
> public DropAction drop(Component arg0, Manifest arg1, int arg2,
> int arg3, int arg4, DropAction arg5)
> {
> return null;
> }
>
> @Override
> public DropAction userDropActionChange(Component arg0,
> Manifest arg1, int arg2, int arg3, int arg4, DropAction
> arg5)
> {
> return null;
> }});
>
> tableViewHeader.setDragSource(new DragSource(){
> int selectedIndex;
> @Override
> public boolean beginDrag(Component arg0, int arg1, int arg2)
> {
> tableViewHeader = (TableViewHeader) arg0;
> selectedIndex = tableViewHeader.getHeaderAt(arg1);
> return true;
> }
>
> @Override
> public void endDrag(Component arg0, DropAction arg1){}
>
> @Override
> public LocalManifest getContent(){
> return null;
> }
>
> @Override
> public Point getOffset() {
> Point point = new Point(0, 0);
> return point;
> }
>
>
> @Override
> public Visual getRepresentation()
> {
> Picture picture = null;
> if (selectedIndex!=-1){
>
> Bounds headerBounds = getHeaderBounds(selectedIndex);
> BufferedImage bImg = new
> BufferedImage(headerBounds.width,
> headerBounds.height,
> BufferedImage.TYPE_INT_RGB);
> Graphics2D graphics = bImg.createGraphics();
> graphics.translate(headerBounds.x, headerBounds.y);
> paint(graphics);
> graphics.dispose();
> picture = new Picture(bImg);
> }
>
> return picture;
> }
>
> private Bounds getHeaderBounds(int selectedIndex2)
> {
> return tableViewHeader.getHeaderBounds(selectedIndex2);
>
> }
>
> @Override
> public int getSupportedDropActions()
> { return 0; }
>
> @Override
> public boolean isNative()
> {
> return false;
> }});
> http://apache-pivot-users.399431.n3.nabble.com/file/n3500121/drag.jpg
>
> --
> View this message in context:
> http://apache-pivot-users.399431.n3.nabble.com/how-to-use-drag-and-drop-swap-table-columns-tp3499066p3500121.html
> Sent from the Apache Pivot - Users mailing list archive at Nabble.com.
