doc/src/examples/taskmenuextension.qdoc
author eckhart.koppen@nokia.com
Wed, 31 Mar 2010 11:06:36 +0300
changeset 7 f7bc934e204c
permissions -rw-r--r--
5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
7
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
     1
/****************************************************************************
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
     2
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
     3
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
     4
** All rights reserved.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
     5
** Contact: Nokia Corporation (qt-info@nokia.com)
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
     6
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
     7
** This file is part of the documentation of the Qt Toolkit.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
     8
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
     9
** $QT_BEGIN_LICENSE:LGPL$
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    10
** No Commercial Usage
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    11
** This file contains pre-release code and may not be distributed.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    12
** You may use this file in accordance with the terms and conditions
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    13
** contained in the Technology Preview License Agreement accompanying
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    14
** this package.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    15
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    16
** GNU Lesser General Public License Usage
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    17
** Alternatively, this file may be used under the terms of the GNU Lesser
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    18
** General Public License version 2.1 as published by the Free Software
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    19
** Foundation and appearing in the file LICENSE.LGPL included in the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    20
** packaging of this file.  Please review the following information to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    21
** ensure the GNU Lesser General Public License version 2.1 requirements
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    22
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    23
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    24
** In addition, as a special exception, Nokia gives you certain additional
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    25
** rights.  These rights are described in the Nokia Qt LGPL Exception
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    26
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    27
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    28
** If you have questions regarding the use of this file, please contact
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    29
** Nokia at qt-info@nokia.com.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    30
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    31
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    32
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    33
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    34
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    35
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    36
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    37
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    38
** $QT_END_LICENSE$
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    39
**
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    40
****************************************************************************/
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    41
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    42
/*!
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    43
    \example designer/taskmenuextension
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    44
    \title Task Menu Extension Example
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    45
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    46
    The Task Menu Extension example shows how to create a custom
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    47
    widget plugin for \l {Qt Designer Manual}{\QD}, and how to to use
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    48
    the QDesignerTaskMenuExtension class to provide custom task menu
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    49
    entries associated with the plugin.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    50
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    51
    \image taskmenuextension-example-faded.png
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    52
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    53
    To provide a custom widget that can be used with \QD, we need to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    54
    supply a self-contained implementation. In this example we use a
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    55
    custom widget designed to show the task menu extension feature:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    56
    The TicTacToe widget.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    57
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    58
    An extension is an object which modifies the behavior of \QD. The
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    59
    QDesignerTaskMenuExtension can provide custom task menu entries
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    60
    when a widget with this extension is selected.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    61
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    62
    There are four available types of extensions in \QD:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    63
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    64
    \list
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    65
        \o QDesignerContainerExtension provides an extension that allows
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    66
           you to add (and delete) pages to a multi-page container plugin
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    67
           in \QD.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    68
        \o QDesignerMemberSheetExtension provides an extension that allows
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    69
           you to manipulate a widget's member functions which is displayed
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    70
           when configuring connections using Qt Designer's mode for editing
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    71
           signals and slots.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    72
        \o QDesignerPropertySheetExtension provides an extension that
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    73
           allows you to manipulate a widget's properties which is displayed
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    74
           in Qt Designer's property editor.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    75
        \o QDesignerTaskMenuExtension provides an extension that allows
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    76
           you to add custom menu entries to \QD's task menu.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    77
    \endlist
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    78
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    79
    You can use all the extensions following the same pattern as in
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    80
    this example, only replacing the respective extension base
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    81
    class. For more information, see the \l {QtDesigner Module}.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    82
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    83
    The Task Menu Extension example consists of five classes:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    84
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    85
    \list
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    86
    \o \c TicTacToe is a custom widget that lets the user play
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    87
       the Tic-Tac-Toe game.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    88
    \o \c TicTacToePlugin exposes the \c TicTacToe class to \QD.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    89
    \o \c TicTacToeTaskMenuFactory creates a \c TicTacToeTaskMenu object.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    90
    \o \c TicTacToeTaskMenu provides the task menu extension, i.e the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    91
       plugin's associated task menu entries.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    92
    \o \c TicTacToeDialog lets the user modify the state of a
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    93
       Tic-Tac-Toe plugin loaded into \QD.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    94
    \endlist
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    95
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    96
    The project file for custom widget plugins needs some additional
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    97
    information to ensure that they will work within \QD. For example,
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    98
    custom widget plugins rely on components supplied with \QD, and
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
    99
    this must be specified in the project file that we use. We will
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   100
    first take a look at the plugin's project file.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   101
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   102
    Then we will continue by reviewing the \c TicTacToePlugin class,
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   103
    and take a look at the \c TicTacToeTaskMenuFactory and \c
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   104
    TicTacToeTaskMenu classes. Finally, we will review the \c
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   105
    TicTacToeDialog class before we take a quick look at the \c
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   106
    TicTacToe widget's class definition.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   107
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   108
    \section1 The Project File: taskmenuextension.pro
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   109
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   110
    The project file must contain some additional information to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   111
    ensure that the plugin will work as expected:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   112
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   113
    \snippet examples/designer/taskmenuextension/taskmenuextension.pro 0
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   114
    \snippet examples/designer/taskmenuextension/taskmenuextension.pro 1
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   115
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   116
    The \c TEMPLATE variable's value makes \c qmake create the custom
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   117
    widget as a library. Later, we will ensure that the widget will be
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   118
    recognized as a plugin by Qt by using the Q_EXPORT_PLUGIN2() macro to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   119
    export the relevant widget information.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   120
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   121
    The \c CONFIG variable contains two values, \c designer and \c
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   122
    plugin:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   123
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   124
    \list
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   125
        \o \c designer: Since custom widgets plugins rely on components
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   126
           supplied with \QD, this value ensures that our plugin links against
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   127
           \QD's library (\c libQtDesigner.so).
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   128
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   129
        \o \c plugin: We also need to ensure that \c qmake considers the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   130
           custom widget a \e plugin library.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   131
    \endlist
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   132
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   133
    When Qt is configured to build in both debug and release modes,
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   134
    \QD will be built in release mode.  When this occurs, it is
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   135
    necessary to ensure that plugins are also built in release
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   136
    mode. For that reason we add the \c debug_and_release value to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   137
    the \c CONFIG variable. Otherwise, if a plugin is built in a mode
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   138
    that is incompatible with \QD, it won't be loaded and
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   139
    installed.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   140
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   141
    The header and source files for the widget are declared in the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   142
    usual way:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   143
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   144
    \snippet examples/designer/taskmenuextension/taskmenuextension.pro 2
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   145
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   146
    We provide an implementation of the plugin interface so that \QD
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   147
    can use the custom widget.  In this particular example we also
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   148
    provide implementations of the task menu extension and the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   149
    extension factory as well as a dialog implementation.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   150
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   151
    It is important to ensure that the plugin is installed in a
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   152
    location that is searched by \QD. We do this by specifying a
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   153
    target path for the project and adding it to the list of items to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   154
    install:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   155
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   156
    \snippet doc/src/snippets/code/doc_src_examples_taskmenuextension.qdoc 0
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   157
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   158
    The task menu extension is created as a library, and will be
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   159
    installed alongside the other \QD plugins when the project is
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   160
    installed (using \c{make install} or an equivalent installation
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   161
    procedure).
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   162
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   163
    Note that if you want the plugins to appear in a Visual Studio
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   164
    integration, the plugins must be built in release mode and their
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   165
    libraries must be copied into the plugin directory in the install
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   166
    path of the integration (for an example, see \c {C:/program
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   167
    files/trolltech as/visual studio integration/plugins}).
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   168
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   169
    For more information about plugins, see the \l {How to Create Qt
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   170
    Plugins} documentation.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   171
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   172
    \section1 TicTacToePlugin Class Definition
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   173
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   174
    The \c TicTacToePlugin class exposes \c the TicTacToe class to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   175
    \QD. Its definition is equivalent to the \l
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   176
    {designer/customwidgetplugin}{Custom Widget Plugin} example's
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   177
    plugin class which is explained in detail. The only part of the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   178
    class definition that is specific to this particular custom widget
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   179
    is the class name:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   180
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   181
    \snippet examples/designer/taskmenuextension/tictactoeplugin.h 0
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   182
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   183
    The plugin class provides \QD with basic information about our
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   184
    plugin, such as its class name and its include file. Furthermore
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   185
    it knows how to create instances of the \c TicTacToe widget.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   186
    TicTacToePlugin also defines the \l
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   187
    {QDesignerCustomWidgetInterface::initialize()}{initialize()}
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   188
    function which is called after the plugin is loaded into \QD. The
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   189
    function's QDesignerFormEditorInterface parameter provides the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   190
    plugin with a gateway to all of \QD's API's.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   191
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   192
    The \c TicTacToePlugin class inherits from both QObject and
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   193
    QDesignerCustomWidgetInterface. It is important to remember, when
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   194
    using multiple inheritance, to ensure that all the interfaces
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   195
    (i.e. the classes that doesn't inherit Q_OBJECT) are made known to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   196
    the meta object system using the Q_INTERFACES() macro. This
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   197
    enables \QD to use \l qobject_cast() to query for supported
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   198
    interfaces using nothing but a QObject pointer.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   199
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   200
    \section1 TicTacToePlugin Class Implementation
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   201
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   202
    The TicTacToePlugin class implementation is in most parts
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   203
    equivalent to the \l {designer/customwidgetplugin}{Custom Widget
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   204
    Plugin} example's plugin class:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   205
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   206
    \snippet examples/designer/taskmenuextension/tictactoeplugin.cpp 0
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   207
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   208
    The only function that differs significantly is the initialize()
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   209
    function:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   210
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   211
    \snippet examples/designer/taskmenuextension/tictactoeplugin.cpp 1
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   212
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   213
    The \c initialize() function takes a QDesignerFormEditorInterface
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   214
    object as argument.  The QDesignerFormEditorInterface class
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   215
    provides access to Qt Designer's components.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   216
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   217
    In \QD you can create two kinds of plugins: custom widget plugins
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   218
    and tool plugins. QDesignerFormEditorInterface provides access to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   219
    all the \QD components that you normally need to create a tool
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   220
    plugin: the extension manager, the object inspector, the property
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   221
    editor and the widget box. Custom widget plugins have access to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   222
    the same components.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   223
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   224
    \snippet examples/designer/taskmenuextension/tictactoeplugin.cpp 2
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   225
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   226
    When creating extensions associated with custom widget plugins, we
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   227
    need to access \QD's current extension manager which we retrieve
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   228
    from the QDesignerFormEditorInterface parameter.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   229
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   230
    \QD's QDesignerFormEditorInterface holds information about all Qt
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   231
    Designer's components: The action editor, the object inspector,
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   232
    the property editor, the widget box, and the extension and form
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   233
    window managers.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   234
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   235
    The QExtensionManager class provides extension management
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   236
    facilities for \QD. Using \QD's current extension manager you can
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   237
    retrieve the extension for a given object. You can also register
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   238
    and unregister an extension for a given object. Remember that an
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   239
    extension is an object which modifies the behavior of \QD.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   240
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   241
    When registrering an extension, it is actually the associated
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   242
    extension factory that is registered. In \QD, extension factories
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   243
    are used to look up and create named extensions as they are
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   244
    required. So, in this example, the task menu extension itself is
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   245
    not created until a task menu is requested by the user.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   246
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   247
    \snippet examples/designer/taskmenuextension/tictactoeplugin.cpp 3
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   248
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   249
    We create a \c TicTacToeTaskMenuFactory object that we register
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   250
    using \QD's current \l {QExtensionManager}{extension manager}
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   251
    retrieved from the QDesignerFormEditorInterface parameter. The
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   252
    first argument is the newly created factory and the second
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   253
    argument is an extension identifier which is a string. The \c
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   254
    Q_TYPEID() macro simply converts the string into a QLatin1String.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   255
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   256
    The \c TicTacToeTaskMenuFactory class is a subclass of
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   257
    QExtensionFactory. When the user request a task menu by clicking
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   258
    the right mouse button over a widget with the specified task menu
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   259
    extension, \QD's extension manager will run through all its
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   260
    registered factories invoking the first one that is able to create
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   261
    a task menu extension for the selected widget. This factory will
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   262
    in turn create a \c TicTacToeTaskMenu object (the extension).
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   263
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   264
    We omit to reimplement the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   265
    QDesignerCustomWidgetInterface::domXml() function (which include
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   266
    default settings for the widget in the standard XML format used by
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   267
    Qt Designer), since no default values are necessary.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   268
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   269
    \snippet examples/designer/taskmenuextension/tictactoeplugin.cpp 4
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   270
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   271
    Finally, we use the Q_EXPORT_PLUGIN2() macro to export the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   272
    TicTacToePlugin class for use with Qt's plugin handling classes:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   273
    This macro ensures that \QD can access and construct the custom
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   274
    widget. Without this macro, there is no way for \QD to use the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   275
    widget.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   276
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   277
    \section1 TicTacToeTaskMenuFactory Class Definition
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   278
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   279
    The \c TicTacToeTaskMenuFactory class inherits QExtensionFactory
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   280
    which provides a standard extension factory for \QD.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   281
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   282
    \snippet examples/designer/taskmenuextension/tictactoetaskmenu.h 1
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   283
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   284
    The subclass's purpose is to reimplement the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   285
    QExtensionFactory::createExtension() function, making it able to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   286
    create a \c TicTacToe task menu extension.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   287
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   288
    \section1 TicTacToeTaskMenuFactory Class Implementation
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   289
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   290
    The class constructor simply calls the QExtensionFactory base
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   291
    class constructor:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   292
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   293
    \snippet examples/designer/taskmenuextension/tictactoetaskmenu.cpp 4
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   294
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   295
    As described above, the factory is invoked when the user request a
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   296
    task menu by clicking the right mouse button over a widget with
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   297
    the specified task menu extension in \QD.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   298
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   299
    \QD's behavior is the same whether the requested extension is
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   300
    associated with a container, a member sheet, a property sheet or a
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   301
    task menu: Its extension manager runs through all its registered
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   302
    extension factories calling \c createExtension() for each until
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   303
    one responds by creating the requested extension.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   304
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   305
    \snippet examples/designer/taskmenuextension/tictactoetaskmenu.cpp 5
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   306
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   307
    So the first thing we do in \c
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   308
    TicTacToeTaskMenuFactory::createExtension() is to check if the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   309
    requested extension is a task menu extension. If it is, and the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   310
    widget requesting it is a \c TicTacToe widget, we create and
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   311
    return a \c TicTacToeTaskMenu object. Otherwise, we simply return
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   312
    a null pointer, allowing \QD's extension manager to continue its
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   313
    search through the registered factories.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   314
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   315
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   316
    \section1 TicTacToeTaskMenu Class Definition
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   317
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   318
    \image taskmenuextension-menu.png
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   319
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   320
    The \c TicTacToeTaskMenu class inherits QDesignerTaskMenuExtension
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   321
    which allows you to add custom entries (in the form of QActions)
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   322
    to the task menu in \QD.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   323
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   324
    \snippet examples/designer/taskmenuextension/tictactoetaskmenu.h 0
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   325
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   326
    We reimplement the \c preferredEditAction() and \c taskActions()
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   327
    functions. Note that we implement a constructor that takes \e two
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   328
    arguments: the parent widget, and the \c TicTacToe widget for
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   329
    which the task menu is requested.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   330
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   331
    In addition we declare the private \c editState() slot, our custom
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   332
    \c editStateAction and a private pointer to the \c TicTacToe
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   333
    widget which state we want to modify.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   334
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   335
    \section1 TicTacToeTaskMenu Class Implementation
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   336
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   337
    \snippet examples/designer/taskmenuextension/tictactoetaskmenu.cpp 0
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   338
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   339
    In the constructor we first save the reference to the \c TicTacToe
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   340
    widget sent as parameter, i.e the widget which state we want to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   341
    modify. We will need this later when our custom action is
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   342
    invoked. We also create our custom \c editStateAction and connect
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   343
    it to the \c editState() slot.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   344
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   345
    \snippet examples/designer/taskmenuextension/tictactoetaskmenu.cpp 1
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   346
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   347
    The \c editState() slot is called whenever the user chooses the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   348
    \gui {Edit State...} option in a \c TicTacToe widget's task menu. The
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   349
    slot creates a \c TicTacToeDialog presenting the current state of
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   350
    the widget, and allowing the user to edit its state by playing the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   351
    game.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   352
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   353
    \snippet examples/designer/taskmenuextension/tictactoetaskmenu.cpp 2
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   354
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   355
    We reimplement the \c preferredEditAction() function to return our
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   356
    custom \c editStateAction as the action that should be invoked
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   357
    when selecting a \c TicTacToe widget and pressing \key F2 .
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   358
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   359
    \snippet examples/designer/taskmenuextension/tictactoetaskmenu.cpp 3
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   360
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   361
    We reimplement the \c taskActions() function to return a list of
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   362
    our custom actions making these appear on top of the default menu
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   363
    entries in a \c TicTacToe widget's task menu.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   364
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   365
    \section1 TicTacToeDialog Class Definition
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   366
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   367
    \image taskmenuextension-dialog.png
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   368
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   369
    The \c TicTacToeDialog class inherits QDialog. The dialog lets the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   370
    user modify the state of the currently selected Tic-Tac-Toe
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   371
    plugin.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   372
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   373
    \snippet examples/designer/taskmenuextension/tictactoedialog.h 0
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   374
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   375
    We reimplement the \c sizeHint() function. We also declare two
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   376
    private slots: \c resetState() and \c saveState(). In addition to
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   377
    the dialog's buttons and layouts we declare two \c TicTacToe
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   378
    pointers, one to the widget the user can interact with and the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   379
    other to the original custom widget plugin which state the user
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   380
    wants to edit.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   381
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   382
    \section1 TicTacToeDialog Class Implementation
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   383
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   384
    \snippet examples/designer/taskmenuextension/tictactoedialog.cpp 0
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   385
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   386
    In the constructor we first save the reference to the TicTacToe
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   387
    widget sent as parameter, i.e the widget which state the user want
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   388
    to modify. Then we create a new \c TicTacToe widget, and set its
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   389
    state to be equivalent to the parameter widget's state.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   390
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   391
    Finally, we create the dialog's buttons and layout.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   392
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   393
    \snippet examples/designer/taskmenuextension/tictactoedialog.cpp 1
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   394
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   395
    We reimplement the \c sizeHint() function to ensure that the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   396
    dialog is given a reasonable size.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   397
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   398
    \snippet examples/designer/taskmenuextension/tictactoedialog.cpp 2
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   399
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   400
    The \c resetState() slot is called whenever the user press the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   401
    \gui Reset button. The only thing we do is to call the \c
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   402
    clearBoard() function for the editor widget, i.e. the \c TicTacToe
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   403
    widget we created in the dialog's constructor.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   404
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   405
    \snippet examples/designer/taskmenuextension/tictactoedialog.cpp 3
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   406
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   407
    The \c saveState() slot is called whenever the user press the \gui
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   408
    OK button, and transfers the state of the editor widget to the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   409
    widget which state we want to modify. In order to make the change
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   410
    of state visible to \QD we need to set the latter widget's state
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   411
    property using the QDesignerFormWindowInterface class.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   412
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   413
    QDesignerFormWindowInterface provides you with information about
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   414
    the associated form window as well as allowing you to alter its
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   415
    properties. The interface is not intended to be instantiated
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   416
    directly, but to provide access to Qt Designer's current form
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   417
    windows controlled by Qt Designer's form window manager.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   418
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   419
    If you are looking for the form window containing a specific
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   420
    widget, you can use the static
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   421
    QDesignerFormWindowInterface::findFormWindow() function:
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   422
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   423
    \snippet examples/designer/taskmenuextension/tictactoedialog.cpp 4
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   424
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   425
    After retrieving the form window of the widget (which state we
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   426
    want to modify), we use the QDesignerFormWindowInterface::cursor()
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   427
    function to retrieve the form window's cursor.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   428
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   429
    The QDesignerFormWindowCursorInterface class provides an interface
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   430
    to the form window's text cursor. Once we have cursor, we can
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   431
    finally set the state property using the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   432
    QDesignerFormWindowCursorInterface::setProperty() function.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   433
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   434
    \snippet examples/designer/taskmenuextension/tictactoedialog.cpp 5
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   435
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   436
    In the end we call the QEvent::accept() function which sets the
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   437
    accept flag of the event object. Setting the \c accept parameter
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   438
    indicates that the event receiver wants the event. Unwanted events
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   439
    might be propagated to the parent widget.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   440
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   441
    \section1 TicTacToe Class Definition
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   442
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   443
    The \c TicTacToe class is a custom widget that lets the user play
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   444
    the Tic-Tac-Toe game.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   445
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   446
    \snippet examples/designer/taskmenuextension/tictactoe.h 0
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   447
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   448
    The main details to observe in the \c TicTacToe class defintion is
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   449
    the declaration of the \c state property and its \c state() and \c
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   450
    setState() functions.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   451
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   452
    We need to declare the \c TicTacToe widget's state as a property
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   453
    to make it visible to \QD; allowing \QD to manage it in the same
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   454
    way it manages the properties the \c TicTacToe widget inherits
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   455
    from QWidget and QObject, for example featuring the property
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   456
    editor.
f7bc934e204c 5cabc75a39ca2f064f70b40f72ed93c74c4dc19b
eckhart.koppen@nokia.com
parents:
diff changeset
   457
*/