org.eclipse.swt.layout.FillData source code

1 /*******************************************************************************
2  * Copyright (c) 2005 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  *     IBM Corporation - initial API and implementation
10  * Port to the D programming language:
11  *     Frank Benoit <benoit@tionex.de>
12  *******************************************************************************/
13 module org.eclipse.swt.layout.FillData;
14 
15 import org.eclipse.swt.SWT;
16 import org.eclipse.swt.graphics.Point;
17 import org.eclipse.swt.widgets.Control;
18 
19 class FillData {
20 
21     int defaultWidth = -1, defaultHeight = -1;
22     int currentWhint, currentHhint, currentWidth = -1, currentHeight = -1;
23 
24 Point computeSize (Control control, int wHint, int hHint, bool flushCache_) {
25     if (flushCache_) flushCache();
26     if (wHint is SWT.DEFAULT && hHint is SWT.DEFAULT) {
27         if (defaultWidth is -1 || defaultHeight is -1) {
28             Point size = control.computeSize (wHint, hHint, flushCache_);
29             defaultWidth = size.x;
30             defaultHeight = size.y;
31         }
32         return new Point(defaultWidth, defaultHeight);
33     }
34     if (currentWidth is -1 || currentHeight is -1 || wHint !is currentWhint || hHint !is currentHhint) {
35         Point size = control.computeSize (wHint, hHint, flushCache_);
36         currentWhint = wHint;
37         currentHhint = hHint;
38         currentWidth = size.x;
39         currentHeight = size.y;
40     }
41     return new Point(currentWidth, currentHeight);
42 }
43 void flushCache () {
44     defaultWidth = defaultHeight = -1;
45     currentWidth = currentHeight = -1;
46 }
47 }