|
1 /**************************************************************************** |
|
2 ** |
|
3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
|
4 ** All rights reserved. |
|
5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
|
6 ** |
|
7 ** This file is part of the documentation of the Qt Toolkit. |
|
8 ** |
|
9 ** $QT_BEGIN_LICENSE:LGPL$ |
|
10 ** No Commercial Usage |
|
11 ** This file contains pre-release code and may not be distributed. |
|
12 ** You may use this file in accordance with the terms and conditions |
|
13 ** contained in the Technology Preview License Agreement accompanying |
|
14 ** this package. |
|
15 ** |
|
16 ** GNU Lesser General Public License Usage |
|
17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
|
18 ** General Public License version 2.1 as published by the Free Software |
|
19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
|
20 ** packaging of this file. Please review the following information to |
|
21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
|
22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
|
23 ** |
|
24 ** In addition, as a special exception, Nokia gives you certain additional |
|
25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
|
26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
|
27 ** |
|
28 ** If you have questions regarding the use of this file, please contact |
|
29 ** Nokia at qt-info@nokia.com. |
|
30 ** |
|
31 ** |
|
32 ** |
|
33 ** |
|
34 ** |
|
35 ** |
|
36 ** |
|
37 ** |
|
38 ** $QT_END_LICENSE$ |
|
39 ** |
|
40 ****************************************************************************/ |
|
41 |
|
42 /*! |
|
43 \example dialogs/tabdialog |
|
44 \title Tab Dialog Example |
|
45 |
|
46 The Tab Dialog example shows how to construct a tab dialog using the |
|
47 QTabWidget class. |
|
48 |
|
49 Dialogs provide an efficient way for the application to communicate |
|
50 with the user, but complex dialogs suffer from the problem that they |
|
51 often take up too much screen area. By using a number of tabs in a |
|
52 dialog, information can be split into different categories, while |
|
53 remaining accessible. |
|
54 |
|
55 \image tabdialog-example.png |
|
56 |
|
57 The Tab Dialog example consists of a single \c TabDialog class that |
|
58 provides three tabs, each containing information about a particular |
|
59 file, and two standard push buttons that are used to accept or reject |
|
60 the contents of the dialog. |
|
61 |
|
62 \section1 TabDialog Class Definition |
|
63 |
|
64 The \c TabDialog class is a subclass of QDialog that displays a |
|
65 QTabWidget and two standard dialog buttons. The class definition |
|
66 only contain the class constructor and a private data member for |
|
67 the QTabWidget: |
|
68 |
|
69 \snippet examples/dialogs/tabdialog/tabdialog.h 3 |
|
70 |
|
71 In the example, the widget will be used as a top-level window, but |
|
72 we define the constructor so that it can take a parent widget. This |
|
73 allows the dialog to be centered on top of an application's main |
|
74 window. |
|
75 |
|
76 \section1 TabDialog Class Implementation |
|
77 |
|
78 The constructor calls the QDialog constructor and creates a QFileInfo |
|
79 object for the specified filename. |
|
80 |
|
81 \snippet examples/dialogs/tabdialog/tabdialog.cpp 0 |
|
82 |
|
83 The tab widget is populated with three custom widgets that each |
|
84 contain information about the file. We construct each of these |
|
85 without a parent widget because the tab widget will reparent |
|
86 them as they are added to it. |
|
87 |
|
88 We create two standard push buttons, and connect each of them to |
|
89 the appropriate slots in the dialog: |
|
90 |
|
91 \snippet examples/dialogs/tabdialog/tabdialog.cpp 1 |
|
92 \snippet examples/dialogs/tabdialog/tabdialog.cpp 3 |
|
93 |
|
94 We arrange the tab widget above the buttons in the dialog: |
|
95 |
|
96 \snippet examples/dialogs/tabdialog/tabdialog.cpp 4 |
|
97 |
|
98 Finally, we set the dialog's title: |
|
99 |
|
100 \snippet examples/dialogs/tabdialog/tabdialog.cpp 5 |
|
101 |
|
102 Each of the tabs are subclassed from QWidget, and only provide |
|
103 constructors. |
|
104 |
|
105 \section1 GeneralTab Class Definition |
|
106 |
|
107 The GeneralTab widget definition is simple because we are only interested |
|
108 in displaying the contents of a widget within a tab: |
|
109 |
|
110 \snippet examples/dialogs/tabdialog/tabdialog.h 0 |
|
111 |
|
112 \section1 GeneralTab Class Implementation |
|
113 |
|
114 The GeneralTab widget simply displays some information about the file |
|
115 passed by the TabDialog. Various widgets for this purpose, and these |
|
116 are arranged within a vertical layout: |
|
117 |
|
118 \snippet examples/dialogs/tabdialog/tabdialog.cpp 6 |
|
119 |
|
120 \section1 PermissionsTab Class Definition |
|
121 |
|
122 Like the GeneralTab, the PermissionsTab is just used as a placeholder |
|
123 widget for its children: |
|
124 |
|
125 \snippet examples/dialogs/tabdialog/tabdialog.h 1 |
|
126 |
|
127 \section1 PermissionsTab Class Implementation |
|
128 |
|
129 The PermissionsTab shows information about the file's access information, |
|
130 displaying details of the file permissions and owner in widgets that are |
|
131 arranged in nested layouts: |
|
132 |
|
133 \snippet examples/dialogs/tabdialog/tabdialog.cpp 7 |
|
134 |
|
135 \section1 ApplicationsTab Class Definition |
|
136 |
|
137 The ApplicationsTab is another placeholder widget that is mostly |
|
138 cosmetic: |
|
139 |
|
140 \snippet examples/dialogs/tabdialog/tabdialog.h 2 |
|
141 |
|
142 \section1 ApplicationsTab Class Implementation |
|
143 |
|
144 The ApplicationsTab does not show any useful information, but could be |
|
145 used as a template for a more complicated example: |
|
146 |
|
147 \snippet examples/dialogs/tabdialog/tabdialog.cpp 8 |
|
148 */ |