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comparison dwt/custom/CTabFolderLayout.d @ 0:380af2bdd8e5

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author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Sat, 09 Aug 2008 17:00:02 +0200
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-1:000000000000 0:380af2bdd8e5
1 /*******************************************************************************
2 * Copyright (c) 2000, 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 *
11 * Port to the D Programming language:
12 * Jacob Carlborg <jacob.carlborg@gmail.com>
13 *******************************************************************************/
14 module dwt.custom.CTabFolderLayout;
15
16 import Math = tango.math.Math;
17
18 import dwt.DWT;
19 import dwt.custom.CTabFolder;
20 import dwt.custom.CTabItem;
21 import dwt.graphics.GC;
22 import dwt.graphics.Point;
23 import dwt.widgets.Composite;
24 import dwt.widgets.Control;
25 import dwt.widgets.Layout;
26
27 /**
28 * This class provides the layout for CTabFolder
29 *
30 * @see CTabFolder
31 */
32 class CTabFolderLayout : Layout {
33 protected Point computeSize (Composite composite, int wHint, int hHint, bool flushCache) {
34 CTabFolder folder = cast(CTabFolder) composite;
35 CTabItem[] items = folder.items;
36 // preferred width of tab area to show all tabs
37 int tabW = 0;
38 GC gc = new GC(folder);
39 for (int i = 0; i < items.length; i++) {
40 if (folder.single) {
41 tabW = Math.max(tabW, items[i].preferredWidth(gc, true, false));
42 }
43 else {
44 tabW += items[i].preferredWidth(gc, i is folder.selectedIndex, false);
45 }
46 }
47 gc.dispose();
48 tabW += 3;
49 if (folder.showMax)
50 tabW += CTabFolder.BUTTON_SIZE;
51 if (folder.showMin)
52 tabW += CTabFolder.BUTTON_SIZE;
53 if (folder.single)
54 tabW += 3 * CTabFolder.BUTTON_SIZE / 2; //chevron
55 if (folder.topRight !is null) {
56 Point pt = folder.topRight.computeSize(DWT.DEFAULT, folder.tabHeight, flushCache);
57 tabW += 3 + pt.x;
58 }
59 if (!folder.single && !folder.simple)
60 tabW += folder.curveWidth - 2 * folder.curveIndent;
61
62 int controlW = 0;
63 int controlH = 0;
64 // preferred size of controls in tab items
65 for (int i = 0; i < items.length; i++) {
66 Control control = items[i].getControl();
67 if (control !is null && !control.isDisposed()) {
68 Point size = control.computeSize(wHint, hHint, flushCache);
69 controlW = Math.max(controlW, size.x);
70 controlH = Math.max(controlH, size.y);
71 }
72 }
73
74 int minWidth = Math.max(tabW, controlW);
75 int minHeight = (folder.minimized) ? 0 : controlH;
76 if (minWidth is 0)
77 minWidth = CTabFolder.DEFAULT_WIDTH;
78 if (minHeight is 0)
79 minHeight = CTabFolder.DEFAULT_HEIGHT;
80
81 if (wHint !is DWT.DEFAULT)
82 minWidth = wHint;
83 if (hHint !is DWT.DEFAULT)
84 minHeight = hHint;
85
86 return new Point(minWidth, minHeight);
87 }
88
89 protected bool flushCache (Control control) {
90 return true;
91 }
92
93 protected void layout (Composite composite, bool flushCache) {
94 CTabFolder folder = cast(CTabFolder) composite;
95 // resize content
96 if (folder.selectedIndex !is -1) {
97 Control control = folder.items[folder.selectedIndex].getControl();
98 if (control !is null && !control.isDisposed()) {
99 control.setBounds(folder.getClientArea());
100 }
101 }
102 }
103 }