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diff --git a/doc/src/howtos/qmlbestpractices/qmlbestpractices-coding.qdoc b/doc/src/howtos/qmlbestpractices/qmlbestpractices-coding.qdoc new file mode 100644 index 0000000000..246c4e4c87 --- /dev/null +++ b/doc/src/howtos/qmlbestpractices/qmlbestpractices-coding.qdoc @@ -0,0 +1,97 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:FDL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** 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. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/*! +\page qml-best-practices-coding.html +\ingroup qml-best-practices +\contentspage QML Best Practices Guides +\previouspage QML Best Practices Guides +\startpage QML Best Practices Guides +\title QML Best Practices: Coding Conventions + +\brief QML Coding Conventions and Importing Files + +There are many different ways to code using QML. These are a set of +guidelines to help your code look better and consistent. + +\section1 Coding Conventions + +The official QML Coding Conventions may be found at +\l {QML Coding Conventions}. This is the recommended convention that will be +used throughout the QML documentation. + +In addition, Qt's official code style may be found at the \l {Qt Coding Style}. + +\section1 Importing Files into QML + +To import items such as directories, use the "import" keyword, similar to +the way the \c {import QtQuick 1.0} statement is used. + +\snippet doc/src/snippets/declarative/imports/best-practices.qml imports + +To facilitate the import of QML components, it is best to begin the QML +file with an uppercase character. This way, the user can simply declare the +component using the file name as the component name. For example, if a QML +component is in a file named \c Button.qml, then the user may import the +component by declaring a \c {Button {}}. Note that this method only works if +the QML files are in the same directory. + +It is also possible to import QML files which have file names that begin in +lower case or files in a different directory by using a \c qmldir file. + +A \c qmldir file tells your QML application which QML components, plugins, +or directories to import. The \c qmldir file must reside in an imported +directory. By using the \c qmldir file, users may import any QML file and assign any +valid QML component name to the component. + +For more information, read the section on +\l{qml-loading-components}{Loading a Component}. + +\section1 Commenting Code + +Commenting code allows others to read the source code better. As well, comments +allow the programmer to think about his or her code; a confusing comment may +mean the code is confusing. + +Similar to JavaScript or C++, there are two ways of commenting QML code: +\list +\o Single line comments start with \c{//} and finish at the end of the line +\o Multiline comments start with \c{/*} and finish with *\/ +\endlist + +\section1 Group Properties + +Many QML properties are \l{attached-properties}{attached} or +\l {qml-grouped-properties}{group} properties. For convenience, you may treat +them as another element when dealing with multiple properties belonging to the +same group. + +\snippet doc/src/snippets/declarative/bestpractices/group.qml not grouped +Treating groups of properties as a block can ease confusion and help relate the +properties with other properties. +\snippet doc/src/snippets/declarative/bestpractices/group.qml grouped +*/ |