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diff --git a/sources/pyside6/doc/tutorials/qmlapp/qmlapplication.rst b/sources/pyside6/doc/tutorials/qmlapp/qmlapplication.rst new file mode 100644 index 000000000..082490f4b --- /dev/null +++ b/sources/pyside6/doc/tutorials/qmlapp/qmlapplication.rst @@ -0,0 +1,132 @@ +######################### +QML Application Tutorial +######################### + +This tutorial provides a quick walk-through of a python application +that loads a QML file. QML is a declarative language that lets you +design UIs faster than a traditional language, such as C++. The +QtQml and QtQuick modules provides the necessary infrastructure for +QML-based UIs. + +In this tutorial, you'll also learn how to provide data from Python +as a QML context property, which is then consumed by the ListView +defined in the QML file. + +Before you begin, install the following prerequisites: + +* The `PySide6 <https://pypi.org/project/PySide6/>`_ Python packages. +* Qt Creator v4.9 beta1 or later from + `http://download.qt.io + <http://download.qt.io/snapshots/qtcreator/4.9/4.9.0-beta1/>`_. + + +The following step-by-step instructions guide you through application +development process using Qt Creator: + +#. Open Qt Creator and select **File > New File or Project..** menu item + to open following dialog: + + .. image:: newpyproject.png + +#. Select **Qt for Python - Empty** from the list of application templates + and select **Choose**. + + .. image:: pyprojname.png + +#. Give a **Name** to your project, choose its location in the + filesystem, and select **Finish** to create an empty ``main.py`` + and ``main.pyproject``. + + .. image:: pyprojxplor.png + + This should create a ``main.py`` and ```main.pyproject`` files + for the project. + +#. Download :download:`view.qml<view.qml>` and :download:`logo.png <logo.png>` + and move them to your project folder. + +#. Double-click on ``main.pyproject`` to open it in edit mode, and append + ``view.qml`` and ``logo.png`` to the **files** list. This is how your + project file should look after this change: + + .. code:: + + { + "files": ["main.py", "view.qml", "logo.png"] + } + +#. Now that you have the necessary bits for the application, import the + Python modules in your ``main.py``, and download country data and + format it: + + .. literalinclude:: main.py + :linenos: + :lines: 40-60 + :emphasize-lines: 12-20 + +#. Now, set up the application window using + :ref:`PySide6.QtGui.QGuiApplication<qguiapplication>`, which manages the application-wide + settings. + + .. literalinclude:: main.py + :linenos: + :lines: 40-65 + :emphasize-lines: 23-25 + + .. note:: Setting the resize policy is important if you want the + root item to resize itself to fit the window or vice-a-versa. + Otherwise, the root item will retain its original size on + resizing the window. + +#. You can now expose the ``data_list`` variable as a QML context + property, which will be consumed by the QML ListView item in ``view.qml``. + + .. literalinclude:: main.py + :linenos: + :lines: 40-70 + :emphasize-lines: 27-30 + +#. Load the ``view.qml`` to the ``QQuickView`` and call ``show()`` to + display the application window. + + .. literalinclude:: main.py + :linenos: + :lines: 40-79 + :emphasize-lines: 33-39 + +#. Finally, execute the application to start the event loop and clean up. + + .. literalinclude:: main.py + :linenos: + :lines: 40- + :emphasize-lines: 41-43 + +#. Your application is ready to be run now. Select **Projects** mode to + choose the Python version to run it. + + .. image:: projectsmode.png + +Run the application by using the ``CTRL+R`` keyboard shortcut to see if it +looks like this: + +.. image:: qmlapplication.png + +You could also watch the following video tutorial for guidance to develop +this application: + +.. raw:: html + + <div style="position: relative; padding-bottom: 56.25%; height: 0; + overflow: hidden; max-width: 100%; height: auto;"> + <iframe src="https://www.youtube.com/embed/JxfiUx60Mbg" frameborder="0" + allowfullscreen style="position: absolute; top: 0; left: 0; + width: 100%; height: 100%;"> + </iframe> + </div> + +******************** +Related information +******************** + +* `QML Reference <https://doc.qt.io/qt-5/qmlreference.html>`_ +* :doc:`../qmlintegration/qmlintegration` |