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1 | /**************************************************************************** | ||
2 | ** $Id$ | ||
3 | ** | ||
4 | ** Internal header file. | ||
5 | ** | ||
6 | ** Created : 981027 | ||
7 | ** | ||
8 | ** Copyright (C) 1998-99 by Trolltech AS. All rights reserved. | ||
9 | ** | ||
10 | ** This file is part of the kernel module of the Qt GUI Toolkit. | ||
11 | ** | ||
12 | ** This file may be distributed under the terms of the Q Public License | ||
13 | ** as defined by Trolltech AS of Norway and appearing in the file | ||
14 | ** LICENSE.QPL included in the packaging of this file. | ||
15 | ** | ||
16 | ** This file may be distributed and/or modified under the terms of the | ||
17 | ** GNU General Public License version 2 as published by the Free Software | ||
18 | ** Foundation and appearing in the file LICENSE.GPL included in the | ||
19 | ** packaging of this file. | ||
20 | ** | ||
21 | ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition | ||
22 | ** licenses may use this file in accordance with the Qt Commercial License | ||
23 | ** Agreement provided with the Software. | ||
24 | ** | ||
25 | ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE | ||
26 | ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | ||
27 | ** | ||
28 | ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for | ||
29 | ** information about Qt Commercial License Agreements. | ||
30 | ** See http://www.trolltech.com/qpl/ for QPL licensing information. | ||
31 | ** See http://www.trolltech.com/gpl/ for GPL licensing information. | ||
32 | ** | ||
33 | ** Contact info@trolltech.com if any conditions of this licensing are | ||
34 | ** not clear to you. | ||
35 | ** | ||
36 | **********************************************************************/ | ||
37 | |||
38 | #ifndef QLAYOUTENGINE_P_H | ||
39 | #define QLAYOUTENGINE_P_H | ||
40 | |||
41 | |||
42 | // | ||
43 | // W A R N I N G | ||
44 | // ------------- | ||
45 | // | ||
46 | // This file is not part of the Qt API. It exists for the convenience | ||
47 | // of qlayout.cpp, qlayoutengine.cpp, qmainwindow.cpp and qsplitter.cpp. | ||
48 | // This header file may change from version to version without notice, | ||
49 | // or even be removed. | ||
50 | // | ||
51 | // We mean it. | ||
52 | // | ||
53 | // | ||
54 | |||
55 | |||
56 | #ifndef QT_H | ||
57 | #include "qabstractlayout.h" | ||
58 | #endif // QT_H | ||
59 | |||
60 | #ifndef QT_NO_LAYOUT | ||
61 | |||
62 | struct QLayoutStruct | ||
63 | { | ||
64 | void initParameters() { | ||
65 | minimumSize = sizeHint = 0; | ||
66 | maximumSize = QLAYOUTSIZE_MAX; | ||
67 | expansive = FALSE; | ||
68 | empty = TRUE; | ||
69 | } | ||
70 | void init() { | ||
71 | stretch = 0; | ||
72 | initParameters(); | ||
73 | } | ||
74 | |||
75 | QCOORD smartSizeHint() { | ||
76 | return ( stretch > 0 ) ? minimumSize : sizeHint; | ||
77 | } | ||
78 | |||
79 | // permanent storage | ||
80 | int stretch; | ||
81 | |||
82 | // parameters | ||
83 | QCOORD sizeHint; | ||
84 | QCOORD maximumSize; | ||
85 | QCOORD minimumSize; | ||
86 | bool expansive; | ||
87 | bool empty; | ||
88 | |||
89 | // temporary storage | ||
90 | bool done; | ||
91 | |||
92 | // result | ||
93 | int pos; | ||
94 | int size; | ||
95 | }; | ||
96 | |||
97 | |||
98 | Q_EXPORT void qGeomCalc( QMemArray<QLayoutStruct> &chain, int start, int count, | ||
99 | int pos, int space, int spacer ); | ||
100 | Q_EXPORT QSize qSmartMinSize( const QWidgetItem *i ); | ||
101 | Q_EXPORT QSize qSmartMinSize( QWidget *w ); | ||
102 | Q_EXPORT QSize qSmartMaxSize( const QWidgetItem *i, int align = 0 ); | ||
103 | Q_EXPORT QSize qSmartMaxSize( QWidget *w, int align = 0 ); | ||
104 | |||
105 | |||
106 | /* | ||
107 | Modify total maximum (max) and total expansion (exp) | ||
108 | when adding boxmax/boxexp. | ||
109 | |||
110 | Expansive boxes win over non-expansive boxes. | ||
111 | */ | ||
112 | static inline void qMaxExpCalc( QCOORD & max, bool &exp, | ||
113 | QCOORD boxmax, bool boxexp ) | ||
114 | { | ||
115 | if ( exp ) { | ||
116 | if ( boxexp ) | ||
117 | max = QMAX( max, boxmax ); | ||
118 | } else { | ||
119 | if ( boxexp ) | ||
120 | max = boxmax; | ||
121 | else | ||
122 | max = QMIN( max, boxmax ); | ||
123 | } | ||
124 | exp = exp || boxexp; | ||
125 | } | ||
126 | |||
127 | #endif //QT_NO_LAYOUT | ||
128 | #endif | ||