Mercurial > projects > dwt-samples
view snippets/composite/Snippet46.d @ 119:9a1be6ff19a2
More snippets, thanks to Tom D.
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 20 Jul 2008 15:26:06 +0200 |
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/******************************************************************************* * Copyright (c) 2000, 2004 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * D Port: * Thomas Demmer <t_demmer AT web DOT de> *******************************************************************************/ module composite.Snippet46; /* * Composite example snippet: intercept mouse events (drag a button with the mouse) * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/snippets/ */ import dwt.DWT; import dwt.graphics.Point; import dwt.graphics.Rectangle; import dwt.widgets.Button; import dwt.widgets.Composite; import dwt.widgets.Display; import dwt.widgets.Event; import dwt.widgets.Listener; import dwt.widgets.Shell; import dwt.layout.FillLayout; import dwt.dwthelper.utils; void main (String [] args) { Display display = new Display (); Shell shell = new Shell (display); Composite composite = new Composite (shell, DWT.NONE); composite.setEnabled (false); composite.setLayout (new FillLayout ()); Button button = new Button (composite, DWT.PUSH); button.setText ("Button"); composite.pack (); composite.setLocation (10, 10); Point [] offset = new Point [1]; Listener listener = new class() Listener{ public void handleEvent (Event event) { switch (event.type) { case DWT.MouseDown: Rectangle rect = composite.getBounds (); if (rect.contains (event.x, event.y)) { Point pt1 = composite.toDisplay (0, 0); Point pt2 = shell.toDisplay (event.x, event.y); offset [0] = new Point (pt2.x - pt1.x, pt2.y - pt1.y); } break; case DWT.MouseMove: if (offset [0] !is null) { Point pt = offset [0]; composite.setLocation (event.x - pt.x, event.y - pt.y); } break; case DWT.MouseUp: offset [0] = null; break; } } }; shell.addListener (DWT.MouseDown, listener); shell.addListener (DWT.MouseUp, listener); shell.addListener (DWT.MouseMove, listener); shell.setSize (300, 300); shell.open (); while (!shell.isDisposed ()) { if (!display.readAndDispatch ()) display.sleep (); } display.dispose (); }