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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:FDL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Free Documentation License Usage
** 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. Please review the following information to ensure
** the GNU Free Documentation License version 1.3 requirements
** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
** $QT_END_LICENSE$
**
****************************************************************************/
/*!
\page qtquickcontrols2-configuration.html
\keyword Qt Quick Controls Configuration File
\title Qt Quick Controls Configuration File
\keyword Qt Quick Controls 2 Configuration File
Qt Quick Controls 2 support a special configuration file, \c :/qtquickcontrols2.conf,
that is built into an application's resources.
The configuration file can specify the preferred style and certain style-specific
attributes. The following example specifies that the preferred style is the \l {Material style}.
Furthermore, when the application is run with the Material style, its theme is light and the
accent and primary colors are teal and blue grey, respectively. However, if the application
is run with the \l {Universal style} instead, the accent color is red and the appropriate theme
is chosen based on the system theme colors.
\code
[Controls]
Style=Material
[Universal]
Theme=System
Accent=Red
[Material]
Theme=Light
Accent=Teal
Primary=BlueGrey
\endcode
It is possible to specify a custom location for the configuration file with
the \l {Supported Environment Variables in Qt Quick Controls 2}
{QT_QUICK_CONTROLS_CONF} environment variable.
\section1 Controls Section
The following values can be specified in a \c Controls section of the
configuration file:
\table
\header
\li Variable
\li Description
\row
\li \c Style
\li Specifies the style to run the application with.
The value can be the name of one of the \l {Available Styles}{built-in styles}
or a \l {Creating a Custom Style}{custom style}.
\row
\li \c FallbackStyle
\li Specifies the style to use for controls that are not implemented.
The style must be one of the \l {Available Styles}{built-in styles}.
By default, the \l {Default Style}{Default} style is used.
\endtable
\section1 Imagine Section
The following table lists values that can be used to configure the
\l {Imagine style} in an \c Imagine section of the configuration file:
\include qquickimaginestyle.qdocinc conf
\section1 Material Section
The following table lists values that can be used to configure the
\l {Material style} in a \c Material section of the configuration file:
\include qquickmaterialstyle.qdocinc conf
\section1 Universal Section
The following table lists values that can be used to configure the
\l {Universal style} in a \c Universal section of the configuration file:
\include qquickuniversalstyle.qdocinc conf
\section1 Font Configuration
The default \l {Control::font}{font} can be specified in a \c Font sub-group
in each style's section in the configuration file. The \c Font sub-group can
be defined in two alternative ways:
\code
[Default]
Font\Family=Open Sans
Font\PixelSize=20
[Material\Font]
Family=Open Sans
PixelSize=20
\endcode
Supported font attributes:
\table
\header
\li Variable
\li Description
\row
\li \c Family
\li The \l {QFont::family}{font family}.
\row
\li \c PointSize
\li The \l {QFont::pointSizeF}{point size}.
\row
\li \c PixelSize
\li The \l {QFont::pixelSize}{pixel size}.
\row
\li \c StyleHint
\li The \l {QFont::styleHint}{style hint}.
Available values: \c SansSerif, \c Helvetica, \c Serif, \c Times, \c TypeWriter, \c Courier,
\c OldEnglish, \c Decorative, \c Monospace, \c Fantasy, \c Cursive.
\row
\li \c Weight
\li The \l {QFont::}{weight}. Qt uses a weighting scale from \c 0 to \c 99 similar to,
but not the same as, the scales used in Windows or CSS. A weight of \c 0 will be thin,
whilst \c 99 will be extremely black.
Available pre-defined weights: \c Thin (0), \c ExtraLight (12), \c Light (25), \c Normal (50),
\c Medium (57), \c DemiBold (63), \c Bold (75), \c ExtraBold (81),
\c Black (87).
\row
\li \c Style
\li The \l {QFont::}{style}.
Available values: \c StyleNormal, \c StyleItalic, \c StyleOblique.
\endtable
\section1 Palette Configuration
The default \l {Control::palette}{palette} can be specified in a \c Palette sub-group
in each style's section in the configuration file. The \c Palette sub-group can be
defined in two alternative ways:
\code
[Fusion]
Palette\Window=#dedede
Palette\WindowText=#212121
\endcode
or:
\code
[Fusion\Palette]
Window=#dedede
WindowText=#212121
\endcode
See \l {qtquickcontrols2-palette}{palette QML Basic Type} for a full list of supported
attributes.
\section1 Using the Configuration File in a Project
In order to make it possible for Qt Quick Controls 2 to find the configuration file,
it must be built into application's resources using the \l {The Qt Resource System}.
Here's an example \c .qrc file:
\code
<!DOCTYPE RCC><RCC version="1.0">
<qresource prefix="/">
<file>qtquickcontrols2.conf</file>
</qresource>
</RCC>
\endcode
\note Qt Quick Controls 2 uses a file selector to load the configuration file. It
is possible to provide a different configuration file for different platforms and
locales. See \l QFileSelector documentation for more details.
Finally, the \c .qrc file must be listed in the application's \c .pro file so that
the build system knows about it. For example:
\code
RESOURCES = application.qrc
\endcode
\section1 Related Information
\list
\li \l{Styling Qt Quick Controls 2}
\li \l{Supported Environment Variables in Qt Quick Controls 2}
\endlist
*/
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