author | eckhart.koppen@nokia.com |
Wed, 31 Mar 2010 11:06:36 +0300 | |
changeset 7 | f7bc934e204c |
permissions | -rw-r--r-- |
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/**************************************************************************** |
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** |
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (qt-info@nokia.com) |
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** |
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** This file is part of the documentation of the Qt Toolkit. |
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** |
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** $QT_BEGIN_LICENSE:LGPL$ |
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** No Commercial Usage |
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** This file contains pre-release code and may not be distributed. |
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** You may use this file in accordance with the terms and conditions |
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** contained in the Technology Preview License Agreement accompanying |
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** this package. |
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** |
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** GNU Lesser General Public License Usage |
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** Alternatively, this file may be used under the terms of the GNU Lesser |
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** General Public License version 2.1 as published by the Free Software |
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** Foundation and appearing in the file LICENSE.LGPL included in the |
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** packaging of this file. Please review the following information to |
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** ensure the GNU Lesser General Public License version 2.1 requirements |
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at qt-info@nokia.com. |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** $QT_END_LICENSE$ |
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** |
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****************************************************************************/ |
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/*! |
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\example dialogs/tabdialog |
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\title Tab Dialog Example |
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The Tab Dialog example shows how to construct a tab dialog using the |
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QTabWidget class. |
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Dialogs provide an efficient way for the application to communicate |
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with the user, but complex dialogs suffer from the problem that they |
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often take up too much screen area. By using a number of tabs in a |
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dialog, information can be split into different categories, while |
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remaining accessible. |
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\image tabdialog-example.png |
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The Tab Dialog example consists of a single \c TabDialog class that |
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provides three tabs, each containing information about a particular |
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file, and two standard push buttons that are used to accept or reject |
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the contents of the dialog. |
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\section1 TabDialog Class Definition |
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The \c TabDialog class is a subclass of QDialog that displays a |
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QTabWidget and two standard dialog buttons. The class definition |
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only contain the class constructor and a private data member for |
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the QTabWidget: |
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\snippet examples/dialogs/tabdialog/tabdialog.h 3 |
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In the example, the widget will be used as a top-level window, but |
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we define the constructor so that it can take a parent widget. This |
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allows the dialog to be centered on top of an application's main |
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window. |
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\section1 TabDialog Class Implementation |
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The constructor calls the QDialog constructor and creates a QFileInfo |
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object for the specified filename. |
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\snippet examples/dialogs/tabdialog/tabdialog.cpp 0 |
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The tab widget is populated with three custom widgets that each |
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contain information about the file. We construct each of these |
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without a parent widget because the tab widget will reparent |
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them as they are added to it. |
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We create two standard push buttons, and connect each of them to |
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the appropriate slots in the dialog: |
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\snippet examples/dialogs/tabdialog/tabdialog.cpp 1 |
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\snippet examples/dialogs/tabdialog/tabdialog.cpp 3 |
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We arrange the tab widget above the buttons in the dialog: |
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\snippet examples/dialogs/tabdialog/tabdialog.cpp 4 |
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Finally, we set the dialog's title: |
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\snippet examples/dialogs/tabdialog/tabdialog.cpp 5 |
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Each of the tabs are subclassed from QWidget, and only provide |
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constructors. |
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\section1 GeneralTab Class Definition |
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The GeneralTab widget definition is simple because we are only interested |
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in displaying the contents of a widget within a tab: |
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\snippet examples/dialogs/tabdialog/tabdialog.h 0 |
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\section1 GeneralTab Class Implementation |
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The GeneralTab widget simply displays some information about the file |
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passed by the TabDialog. Various widgets for this purpose, and these |
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are arranged within a vertical layout: |
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\snippet examples/dialogs/tabdialog/tabdialog.cpp 6 |
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\section1 PermissionsTab Class Definition |
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Like the GeneralTab, the PermissionsTab is just used as a placeholder |
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widget for its children: |
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\snippet examples/dialogs/tabdialog/tabdialog.h 1 |
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\section1 PermissionsTab Class Implementation |
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The PermissionsTab shows information about the file's access information, |
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displaying details of the file permissions and owner in widgets that are |
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arranged in nested layouts: |
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\snippet examples/dialogs/tabdialog/tabdialog.cpp 7 |
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\section1 ApplicationsTab Class Definition |
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The ApplicationsTab is another placeholder widget that is mostly |
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cosmetic: |
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\snippet examples/dialogs/tabdialog/tabdialog.h 2 |
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\section1 ApplicationsTab Class Implementation |
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The ApplicationsTab does not show any useful information, but could be |
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used as a template for a more complicated example: |
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\snippet examples/dialogs/tabdialog/tabdialog.cpp 8 |
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*/ |