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1 /*******************************************************************************
2  * Copyright (c) 2005 IBM Corporation and others.
3  *
4  * This program and the accompanying materials
5  * are made available under the terms of the Eclipse Public License 2.0
6  * which accompanies this distribution, and is available at
7  * https://www.eclipse.org/legal/epl-2.0/
8  *
9  * SPDX-License-Identifier: EPL-2.0
10  *
11  * Contributors:
12  *     IBM Corporation - initial API and implementation
13  *******************************************************************************/
14 package org.eclipse.swt.layout;
15
16 import org.eclipse.swt.*;
17 import org.eclipse.swt.graphics.*;
18 import org.eclipse.swt.widgets.*;
19
20 class FillData {
21
22         int defaultWidth = -1, defaultHeight = -1;
23         int currentWhint, currentHhint, currentWidth = -1, currentHeight = -1;
24
25 Point computeSize (Control control, int wHint, int hHint, boolean flushCache) {
26         if (flushCache) flushCache();
27         if (wHint == SWT.DEFAULT && hHint == SWT.DEFAULT) {
28                 if (defaultWidth == -1 || defaultHeight == -1) {
29                         Point size = control.computeSize (wHint, hHint, flushCache);
30                         defaultWidth = size.x;
31                         defaultHeight = size.y;
32                 }
33                 return new Point(defaultWidth, defaultHeight);
34         }
35         if (currentWidth == -1 || currentHeight == -1 || wHint != currentWhint || hHint != currentHhint) {
36                 Point size = control.computeSize (wHint, hHint, flushCache);
37                 currentWhint = wHint;
38                 currentHhint = hHint;
39                 currentWidth = size.x;
40                 currentHeight = size.y;
41         }
42         return new Point(currentWidth, currentHeight);
43 }
44 void flushCache () {
45         defaultWidth = defaultHeight = -1;
46         currentWidth = currentHeight = -1;
47 }
48 }