| package org.eclipse.swt.tests.gtk.snippets; |
| |
| /* |
| * Drag and Drop example snippet: drag a URL between two labels. |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| */ |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.dnd.DND; |
| import org.eclipse.swt.dnd.DragSource; |
| import org.eclipse.swt.dnd.DragSourceEvent; |
| import org.eclipse.swt.dnd.DragSourceListener; |
| import org.eclipse.swt.dnd.DropTarget; |
| import org.eclipse.swt.dnd.DropTargetEvent; |
| import org.eclipse.swt.dnd.DropTargetListener; |
| import org.eclipse.swt.dnd.Transfer; |
| import org.eclipse.swt.dnd.URLTransfer; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.layout.FillLayout; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Label; |
| import org.eclipse.swt.widgets.Shell; |
| |
| /* |
| * Title: Bug 307441 - [DND] DnD on Linux does not behave as expected with overlapping controls |
| * How to run: launch snippet and drag controls from left side to right, watch console for print statements |
| * Bug description: Improper events for overlapped controls |
| * Expected results: All events should be fired correctly |
| * GTK Version(s): all |
| */ |
| public class Bug307441_DnDOverlappingControls { |
| |
| public static void main (String [] args) { |
| |
| Display display = new Display (); |
| final Shell shell = new Shell (display); |
| shell.setText("URLTransfer"); |
| shell.setLayout(new FillLayout()); |
| final Label label1 = new Label (shell, SWT.BORDER); |
| label1.setText ("http://www.eclipse.org"); |
| |
| final Composite dropComp = new Composite(shell, SWT.BORDER); |
| dropComp.setSize(600,300); |
| Rectangle clientArea = dropComp.getClientArea(); |
| |
| final Label label2 = new Label (dropComp, SWT.BORDER); |
| label2.setBackground(new Color(null,255,255,0)); |
| label2.setText("DropLabel1"); |
| label2.setSize(100,100); |
| label2.setBounds(clientArea.x, clientArea.y, clientArea.width, (clientArea.height*2)/3); |
| |
| final Label label3 = new Label (dropComp, SWT.BORDER); |
| label3.setBackground(new Color(null, 255, 0,0)); |
| label3.setText("DropLabel2"); |
| label3.setSize(100,100); |
| label3.setBounds(clientArea.x+10, clientArea.y+clientArea.height/3, clientArea.width-10, clientArea.height/2); |
| label3.moveAbove(label2); |
| |
| setDragSource (label1); |
| setDropTarget (dropComp); |
| setDropTargetForLabel (label2); |
| setDropTargetForLabel (label3); |
| |
| shell.setSize(900, 300); |
| shell.open (); |
| while (!shell.isDisposed ()) { |
| if (!display.readAndDispatch ()) display.sleep (); |
| } |
| display.dispose (); |
| } |
| |
| public static void setDragSource (final Label label) { |
| int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK; |
| final DragSource source = new DragSource (label, operations); |
| source.setTransfer(new Transfer[] {URLTransfer.getInstance()}); |
| source.addDragListener (new DragSourceListener () { |
| @Override |
| public void dragStart(DragSourceEvent e) { |
| } |
| @Override |
| public void dragSetData(DragSourceEvent e) { |
| e.data = label.getText(); |
| } |
| @Override |
| public void dragFinished(DragSourceEvent event) { |
| } |
| }); |
| } |
| |
| public static void setDropTargetForLabel (final Label control) { |
| int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK; |
| DropTarget target = new DropTarget(control, operations); |
| target.setTransfer(new Transfer[] {URLTransfer.getInstance()}); |
| target.addDropListener (new DropTargetListener() { |
| @Override |
| public void dragEnter(DropTargetEvent e) { |
| System.out.println("dragEnter="+control.getText()); |
| if (e.detail == DND.DROP_NONE) |
| e.detail = DND.DROP_LINK; |
| } |
| @Override |
| public void dragOperationChanged(DropTargetEvent e) { |
| if (e.detail == DND.DROP_NONE) |
| e.detail = DND.DROP_LINK; |
| } |
| @Override |
| public void drop(DropTargetEvent event) { |
| if (event.data == null) { |
| event.detail = DND.DROP_NONE; |
| return; |
| } |
| control.setText(((String) event.data)); |
| |
| } |
| @Override |
| public void dragLeave(DropTargetEvent arg0) { |
| // TODO Auto-generated method stub |
| System.out.println("dragLeave="+control.getText()); |
| |
| } |
| @Override |
| public void dragOver(DropTargetEvent arg0) { |
| // TODO Auto-generated method stub |
| |
| } |
| @Override |
| public void dropAccept(DropTargetEvent arg0) { |
| // TODO Auto-generated method stub |
| |
| } |
| }); |
| } |
| public static void setDropTarget (final Control control) { |
| int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK; |
| DropTarget target = new DropTarget(control, operations); |
| target.setTransfer(new Transfer[] {URLTransfer.getInstance()}); |
| target.addDropListener (new DropTargetListener() { |
| @Override |
| public void dragEnter(DropTargetEvent e) { |
| System.out.println("dragEnter=composite"); |
| |
| if (e.detail == DND.DROP_NONE) |
| e.detail = DND.DROP_LINK; |
| } |
| @Override |
| public void dragOperationChanged(DropTargetEvent e) { |
| if (e.detail == DND.DROP_NONE) |
| e.detail = DND.DROP_LINK; |
| } |
| @Override |
| public void drop(DropTargetEvent event) { |
| if (event.data == null) { |
| event.detail = DND.DROP_NONE; |
| return; |
| } |
| control.setBackground(new Color(null,0,0,255)); |
| } |
| @Override |
| public void dragLeave(DropTargetEvent arg0) { |
| // TODO Auto-generated method stub |
| System.out.println("dragLeave=composite"); |
| |
| } |
| @Override |
| public void dragOver(DropTargetEvent arg0) { |
| // TODO Auto-generated method stub |
| |
| } |
| @Override |
| public void dropAccept(DropTargetEvent arg0) { |
| // TODO Auto-generated method stub |
| |
| } |
| }); |
| } |
| } |