Attachment 277346 Details for Bug 543910 – CTab DnD

CTab DnD

Bug543655_WaylandCTabDnD.java (text/x-java), 5.04 KB, created by Xi Yan

on 2019-01-28 12:02:45 EST

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Filename:

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Creator: Xi Yan

Created: 2019-01-28 12:02:45 EST

Size: 5.04 KB

patch

obsolete

>/*******************************************************************************
> * Copyright (c) 2018 Red Hat and others. All rights reserved.
> * The contents of this file are made available under the terms
> * of the GNU Lesser General Public License (LGPL) Version 2.1 that
> * accompanies this distribution (lgpl-v21.txt).  The LGPL is also
> * available at http://www.gnu.org/licenses/lgpl.html.  If the version
> * of the LGPL at http://www.gnu.org is different to the version of
> * the LGPL accompanying this distribution and there is any conflict
> * between the two license versions, the terms of the LGPL accompanying
> * this distribution shall govern.
> *
> * Contributors:
> *     Red Hat - initial API and implementation
> *******************************************************************************/
>package org.eclipse.swt.tests.gtk.snippets;
>
>import org.eclipse.swt.SWT;
>import org.eclipse.swt.custom.CTabFolder;
>import org.eclipse.swt.custom.CTabItem;
>import org.eclipse.swt.graphics.Point;
>import org.eclipse.swt.graphics.Rectangle;
>import org.eclipse.swt.layout.GridData;
>import org.eclipse.swt.layout.GridLayout;
>import org.eclipse.swt.widgets.Control;
>import org.eclipse.swt.widgets.Display;
>import org.eclipse.swt.widgets.Event;
>import org.eclipse.swt.widgets.Listener;
>import org.eclipse.swt.widgets.Shell;
>import org.eclipse.swt.widgets.Text;
>
>public class Bug543655_WaylandCTabDnD {
>
>	public static void main(String[] args) {
>		final Display display = new Display();
>		Shell shell = new Shell(display);
>		shell.setLayout(new GridLayout());
>		final CTabFolder folder = new CTabFolder(shell, SWT.BORDER);
>		folder.setLayoutData(new GridData(GridData.FILL_BOTH));
>		for (int i = 0; i < 10; i++) {
>			CTabItem item = new CTabItem(folder, SWT.NONE);
>			item.setText("item " + i);
>			Text text = new Text(folder, SWT.BORDER | SWT.MULTI | SWT.VERTICAL);
>			text.setText("Text control for " + i);
>			item.setControl(text);
>		}
>
>		Listener listener = new Listener() {
>			boolean drag = false;
>			boolean exitDrag = false;
>			CTabItem dragItem;
>
>			@Override
>			public void handleEvent(Event e) {
>				Point p = new Point(e.x, e.y);
>				if (e.type == SWT.DragDetect) {
>					p = folder.toControl(display.getCursorLocation()); // see bug 43251
>				}
>				switch (e.type) {
>				case SWT.DragDetect: {
>					System.out.println("DragDetect");
>					CTabItem item = folder.getItem(p);
>					if (item == null) {
>						return;
>					}
>//					if (item.getBounds().width < 0 || item.getBounds().height < 0 || item.getControl().getBounds().height < 0) {
>//						return;
>//					}
>//					GC gc = new GC(folder);
>//					Image tabImage = new Image(null, item.getBounds().width, item.getBounds().height);
>//					gc.copyArea(tabImage, item.getBounds().x, item.getBounds().y);
>//
>//					Image entireImage = new Image(null, item.getControl().getBounds().width, item.getControl().getBounds().height + item.getBounds().height);
>//					gc.copyArea(entireImage, 0, 0);
>//
>//					Cursor tabCursor = new Cursor(display, tabImage.getImageData(), 0, 0);
>//					folder.setCursor(tabCursor);
>//
>//					Cursor bigCursor = new Cursor(display, entireImage.getImageData(), item.getBounds().x, item.getBounds().y);
>//					item.getControl().setCursor(bigCursor);
>
>					drag = true;
>					exitDrag = false;
>					dragItem = item;
>					break;
>				}
>				case SWT.MouseEnter:
>					if (exitDrag) {
>						exitDrag = false;
>						drag = e.button != 0;
>					}
>					break;
>				case SWT.MouseExit:
>					if (drag) {
>						folder.setInsertMark(null, false);
>						exitDrag = true;
>						drag = false;
>					}
>					break;
>				case SWT.MouseUp: {
>					System.out.println("MouseUp");
>					folder.setCursor(null);
>					if (!drag)
>						return;
>					dragItem.getControl().setCursor(null);
>					folder.setInsertMark(null, false);
>					CTabItem item = folder.getItem(new Point(p.x, 1));
>					if (item != null) {
>						Rectangle rect = item.getBounds();
>						boolean after = p.x > rect.x + rect.width / 2;
>						int index = folder.indexOf(item);
>						index = after ? index + 1 : index - 1;
>						index = Math.max(0, index);
>						CTabItem newItem = new CTabItem(folder, SWT.NONE, index);
>						newItem.setText(dragItem.getText());
>						Control c = dragItem.getControl();
>						dragItem.setControl(null);
>						newItem.setControl(c);
>						dragItem.dispose();
>						folder.setSelection(newItem);
>					}
>					drag = false;
>					exitDrag = false;
>					dragItem = null;
>					break;
>				}
>				case SWT.MouseMove: {
>					if (!drag)
>						return;
>					CTabItem item = folder.getItem(new Point(p.x, 2));
>					if (item == null) {
>						folder.setInsertMark(null, false);
>						return;
>					}
>					Rectangle rect = item.getBounds();
>					boolean after = p.x > rect.x + rect.width / 2;
>					folder.setInsertMark(item, after);
>					break;
>				}
>				}
>			}
>		};
>		folder.addListener(SWT.DragDetect, listener);
>		folder.addListener(SWT.MouseUp, listener);
>		folder.addListener(SWT.MouseMove, listener);
>		folder.addListener(SWT.MouseExit, listener);
>		folder.addListener(SWT.MouseEnter, listener);
>		shell.open();
>		while (!shell.isDisposed()) {
>			if (!display.readAndDispatch())
>				display.sleep();
>		}
>		display.dispose();
>	}
>}

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