/**************************************************************************** ** ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the documentation of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:FDL$ ** Commercial Usage ** Licensees holding valid Qt Commercial licenses may use this file in ** accordance with the Qt Commercial License Agreement provided with the ** Software or, alternatively, in accordance with the terms contained in a ** written agreement between you and Nokia. ** ** GNU Free Documentation License ** Alternatively, this file may be used under the terms of the GNU Free ** Documentation License version 1.3 as published by the Free Software ** Foundation and appearing in the file included in the packaging of this ** file. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** $QT_END_LICENSE$ ** ****************************************************************************/ /*! \example dialogs/classwizard \title Class Wizard Example The License Wizard example shows how to implement linear wizards using QWizard. \image classwizard.png Screenshot of the Class Wizard example Most wizards have a linear structure, with page 1 followed by page 2 and so on until the last page. Some wizards are more complex in that they allow different traversal paths based on the information provided by the user. The \l{dialogs/licensewizard}{License Wizard} example shows how to create such wizards. The Class Wizard example consists of the following classes: \list \o \c ClassWizard inherits QWizard and provides a three-step wizard that generates the skeleton of a C++ class based on the user's input. \o \c IntroPage, \c ClassInfoPage, \c CodeStylePage, \c OutputFilesPage, and \c ConclusionPage are QWizardPage subclasses that implement the wizard pages. \endlist \section1 ClassWizard Class Definition \image classwizard-flow.png The Class Wizard pages We will see how to subclass QWizard to implement our own wizard. The concrete wizard class is called \c ClassWizard and provides five pages: \list \o The first page is an introduction page, telling the user what the wizard is going to do. \o The second page asks for a class name and a base class, and allows the user to specify whether the class should have a \c Q_OBJECT macro and what constructors it should provide. \o The third page allows the user to set some options related to the code style, such as the macro used to protect the header file from multiple inclusion (e.g., \c MYDIALOG_H). \o The fourth page allows the user to specify the names of the output files. \o The fifth page is a conclusion page. \endlist Although the program is just an example, if you press \gui Finish (\gui Done on Mac OS X), actual C++ source files will actually be generated. \section1 The ClassWizard Class Here's the \c ClassWizard definition: \snippet examples/dialogs/classwizard/classwizard.h 0 The class reimplements QDialog's \l{QDialog::}{accept()} slot. This slot is called when the user clicks \gui{Finish}. Here's the constructor: \snippet examples/dialogs/classwizard/classwizard.cpp 1 We instantiate the five pages and insert them into the wizard using QWizard::addPage(). The order in which they are inserted is also the order in which they will be shown later on. We call QWizard::setPixmap() to set the banner and the background pixmaps for all pages. The banner is used as a background for the page header when the wizard's style is \l{QWizard::}{ModernStyle}; the background is used as the dialog's background in \l{QWizard::}{MacStyle}. (See \l{Elements of a Wizard Page} for more information.) \snippet examples/dialogs/classwizard/classwizard.cpp 3 \snippet examples/dialogs/classwizard/classwizard.cpp 4 \dots \snippet examples/dialogs/classwizard/classwizard.cpp 5 \snippet examples/dialogs/classwizard/classwizard.cpp 6 If the user clicks \gui Finish, we extract the information from the various pages using QWizard::field() and generate the files. The code is long and tedious (and has barely anything to do with noble art of designing wizards), so most of it is skipped here. See the actual example in the Qt distribution for the details if you're curious. \section1 The IntroPage Class The pages are defined in \c classwizard.h and implemented in \c classwizard.cpp, together with \c ClassWizard. We will start with the easiest page: \snippet examples/dialogs/classwizard/classwizard.h 1 \codeline \snippet examples/dialogs/classwizard/classwizard.cpp 7 A page inherits from QWizardPage. We set a \l{QWizardPage::}{title} and a \l{QWizard::WatermarkPixmap}{watermark pixmap}. By not setting any \l{QWizardPage::}{subTitle}, we ensure that no header is displayed for this page. (On Windows, it is customary for wizards to display a watermark pixmap on the first and last pages, and to have a header on the other pages.) Then we create a QLabel and add it to a layout. \section1 The ClassInfoPage Class The second page is defined and implemented as follows: \snippet examples/dialogs/classwizard/classwizard.h 2 \codeline \snippet examples/dialogs/classwizard/classwizard.cpp 9 \dots \snippet examples/dialogs/classwizard/classwizard.cpp 12 \dots \snippet examples/dialogs/classwizard/classwizard.cpp 13 First, we set the page's \l{QWizardPage::}{title}, \l{QWizardPage::}{subTitle}, and \l{QWizard::LogoPixmap}{logo pixmap}. The logo pixmap is displayed in the page's header in \l{QWizard::}{ClassicStyle} and \l{QWizard::}{ModernStyle}. Then we create the child widgets, create \l{Registering and Using Fields}{wizard fields} associated with them, and put them into layouts. The \c className field is created with an asterisk (\c *) next to its name. This makes it a \l{mandatory field}, that is, a field that must be filled before the user can press the \gui Next button (\gui Continue on Mac OS X). The fields' values can be accessed from any other page using QWizardPage::field(), or from the wizard code using QWizard::field(). \section1 The CodeStylePage Class The third page is defined and implemented as follows: \snippet examples/dialogs/classwizard/classwizard.h 3 \codeline \snippet examples/dialogs/classwizard/classwizard.cpp 14 \dots \snippet examples/dialogs/classwizard/classwizard.cpp 15 \codeline \snippet examples/dialogs/classwizard/classwizard.cpp 16 The code in the constructor is very similar to what we did for \c ClassInfoPage, so we skipped most of it. The \c initializePage() function is what makes this class interesting. It is reimplemented from QWizardPage and is used to initialize some of the page's fields with values from the previous page (namely, \c className and \c baseClass). For example, if the class name on page 2 is \c SuperDuperWidget, the default macro name on page 3 is \c SUPERDUPERWIDGET_H. The \c OutputFilesPage and \c ConclusionPage classes are very similar to \c CodeStylePage, so we won't review them here. \sa QWizard, {License Wizard Example}, {Trivial Wizard Example} */