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doc/articles/layouts.md

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-# Qt Layouts
-
-Writing a user interface, that automatically adjusts to different sizes, language,
-font or theme changes is a challenge, that can be solved best with a layout system.
-Such an implementation exists from the beginning for the [Qt framework]( https://www.qt.io )
-and is still relevant for the desktop solution [Qt/Widgets]( https://doc.qt.io/qt-5/qtwidgets-index.html ).
-It's ideas have been transferred to the [Qt/Graphics]( https://doc.qt.io/qt-5/qgraphicslayout.html )
-module and in a restricted version to the newest technology [Qt/Quick](https://doc.qt.io/qt-5/qtquick-index.html).
-Yet another variation can be found in the [QSkinny]( https://github.com/uwerat/qskinny ) library.
-
-This article explains the Qt layout concept and compares the different implementations.
-
-## Definitions
-
-A layout calculates position and size ( = geometry ) for one or several
-elements. Its algorithm relies on parameters, that are provided
-from each element. Furthermore it also provides these parameters, so that it can
-be used as an element in another layout.
-
-A positioner finds the position without changing sizes.
-Therefore every layout is a positioner, but a positioner is no layout.
-To avoid confusion the term "positioner" will be used for the rest of this document
-exclusivly for non layouts.
-
-- minimum
-- preferred
-- maximum
-- constraints
-- policy
-- explicit/implicit
-- horizontal/vertical
-- stretch
-- more than one element per cell
-
-+---------------+---------------+--------------------+
-| Fruit         | Price         | Advantages         |
-+===============+===============+====================+
-| Bananas       | $1.34         | - built-in wrapper |
-|               |               | - bright color     |
-+---------------+---------------+--------------------+
-| Oranges       | $2.10         | - cures scurvy     |
-|               |               | - tasty            |
-+---------------+---------------+--------------------+
-
-~~~
-{
-  "firstName": "John",
-  "lastName": "Smith",
-  "age": 25
-}
-~~~