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QtQuickControls2.TreeView

Build Status

This repository contains the sources for a QtQuickControls2 based TreeView control that you can use in your qml desktop application.

State

This user control is in alpha version. There are some missing features or things that do not work yet:

  • dynamic insertion works by appending items, order is not correct at the moment
  • dynamic removal does not work
  • there is no selection model
  • root index cannot be set

Why this project?

QtQuickControls2 do not provide a TreeView control yet because they focus on mobile application development where tree view are not that common. But QtQuickControls2 can also be used to develop nice desktop applications and a tree view component is often needed. I needed a TreeView for one of my personal (but still private) project so I decided to create a one myself.

Solution

The solution I found is to use a ListView Item as the base qml item of the tree view and use a proxy model that flatten a source tree model.

Source code organisation

  • The core of the library can be found in the lib folder. This is a header only library that contains the TreeViewModel and the TreeItemViewModel

  • The imports directory contains the qml implementation of the TreeView and the TreeItemView. The TreeItemView delegate is extensible: you can specify the component to use to to render both the arrow and the display items. It handles indentation and expanding/collapsing of nodes automatically for you.

  • There is also a small tests suite (using the catch testing framework ) that you can run using ctest.

  • The example create two tree model: a StandardItemModel and QFileSystemModel. It then wraps those two models in a TreeViewModel and exposes them via a context property.

How can I use it ?

License here is "super-open", not even copy-left or copy-right, just use it as you want, as it's the most practical to you:

  • if you want to use it as GIT submodule and compile it in your app, do it!
  • if you prefer separate project as a shared library, do it!
  • if you need to modify the project to be able to integrate in you app (opensource or not), do it!
  • if you want to share your work on the library, thanks a lot, but if you don't, no problem!

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A QtQuickControls2 based TreeView

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  • C++ 98.7%
  • QML 1.1%
  • CMake 0.2%