本文整理匯總了Java中java.awt.dnd.DropTargetDragEvent.getTransferable方法的典型用法代碼示例。如果您正苦於以下問題：Java DropTargetDragEvent.getTransferable方法的具體用法？Java DropTargetDragEvent.getTransferable怎麽用？Java DropTargetDragEvent.getTransferable使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類java.awt.dnd.DropTargetDragEvent的用法示例。
在下文中一共展示了DropTargetDragEvent.getTransferable方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: dragEnter
import java.awt.dnd.DropTargetDragEvent; //導入方法依賴的package包/類
/**
*
*/
public void dragEnter(DropTargetDragEvent e) {
JComponent component = getDropTarget(e);
TransferHandler th = component.getTransferHandler();
boolean isLocal =
th instanceof mxGraphTransferHandler && ((mxGraphTransferHandler) th).isLocalDrag();
if (isLocal) {
canImport = true;
} else {
canImport =
graphComponent.isImportEnabled() && th.canImport(component, e.getCurrentDataFlavors());
}
if (canImport) {
transferBounds = null;
setVisible(false);
try {
Transferable t = e.getTransferable();
if (t.isDataFlavorSupported(mxGraphTransferable.dataFlavor)) {
mxGraphTransferable gt =
(mxGraphTransferable) t.getTransferData(mxGraphTransferable.dataFlavor);
dragCells = gt.getCells();
if (gt.getBounds() != null) {
mxGraph graph = graphComponent.getGraph();
double scale = graph.getView().getScale();
transferBounds = gt.getBounds();
int w = (int) Math.ceil((transferBounds.getWidth() + 1) * scale);
int h = (int) Math.ceil((transferBounds.getHeight() + 1) * scale);
setPreviewBounds(
new Rectangle((int) transferBounds.getX(), (int) transferBounds.getY(), w, h));
if (imagePreview) {
// Does not render fixed cells for local preview
// but ignores movable state for non-local previews
if (isLocal) {
if (!isLivePreview()) {
updateDragImage(graph.getMovableCells(dragCells));
}
} else {
Object[] tmp = graphComponent.getImportableCells(dragCells);
updateDragImage(tmp);
// Shows no drag icon if import is allowed but none
// of the cells can be imported
if (tmp == null || tmp.length == 0) {
canImport = false;
e.rejectDrag();
return;
}
}
}
setVisible(true);
}
}
e.acceptDrag(TransferHandler.COPY_OR_MOVE);
} catch (Exception ex) {
// do nothing
ex.printStackTrace();
}
} else {
e.rejectDrag();
}
}