Google Summer of Code/2018/Project Ideas

This page lists a number of ideas for potential Google Summer of Code 2018 projects. Also check existing bugs for more problems to solve.

This page's primary purpose is to help to give potential applicants ideas that they can build on to turn into applications for the program. Members of the community are encouraged to identify ideas for projects here, and whether they would be willing to act as a mentor for a student attempting the project.

Students can base their application on one of these ideas, or on an idea of their own if they prefer.

Processes

If you are thinking of applying for GSoC, please see our Google Summer of Code/Processes page which describes the way that we manage GSoC within Qt, so you know what we expect of students and Mentors.

Project Ideas

This is the list of projects. Please add projects using the GSoC idea template.

General

Port Qt to IncludeOS

Suggested By Jesús Fernández Summary Create a port of Qt to IncludeOS Skills Required C++ Difficulty Hard Possible Mentors Jesús Fernández Notes IncludeOS allows you to run your application in the cloud without an operating system. IncludeOS adds operating system functionality to your application allowing you to create performant, secure and resource efficient virtual machines. IncludeOS applications boot in tens of milliseconds and require only a few megabytes of disk and memory. Comments

Qt Location

QtLocation is Qt's own mapping module. It has positioning and location modules for integrating maps into applications. For more information see http://doc.qt.io/qt-5/qtlocation-index.html.

Valhalla offline routing plugin

Suggested By Paangele Summary Create a QtLocation geoservice plugin based on valhalla Skills Required C++ Difficulty Medium Possible Mentors Paangele Notes Comments Valhalla is a proven open source routing solution capable of using OSM data route from A to B. Creating a QtLocation geoservice plugin based on valhalla would allow to perform offline routing easily and effectively on a wide range of platforms.

OpenGL-based Map Items

Suggested By Paangele Summary Implement the rendering of geometric map items (circles, rectangles, polygons, polyline) in GLSL Skills Required C++ Difficulty Medium Possible Mentors Paangele Notes Comments Geometric map items in QtLocation currently require considerable preprocessing, and even projection to screen is performed in CPU. Applying GPU-acceleration to the items rendering stack can be performed at multiple stages.

MapPolygons with holes and GeoJSON interoperability

Suggested By Paangele Summary Support MapPolygons with holes Skills Required C++ Difficulty Medium Possible Mentors Paangele Notes Comments QtLocation's MapPolygon currently does not support polygons containing holes. Adding this support would allow a 1:1 feature matching with GeoJSON geometries. The scope of this project is therefore to implement the necessary enabler and the GeoJSON conversion API to produce GeoJSON from Map Items and vice versa, possibly allowing to feed GeoJSON to a MapItemView, and populate the map in that way.

3D Map Item

Suggested By Paangele Summary Add a Map Item to render 3D models Skills Required C++ Difficulty Medium Possible Mentors Paangele Notes Comments To realize this project, a QtLite feature and a dependency on assimp could be added.

Indoor Maps support

Suggested By Paangele Summary Support indoor maps both from API and implementation perspective Skills Required C++ Difficulty Medium Possible Mentors Paangele Notes Comments QtLocation currently offers no support for indoor maps. This project involves defining new tech preview API to deal with indoor maps, and the necessary adaptation to the renderer(s) to display the maps.

Qt Model/View

Qt contains a set of item view classes that use a model/view architecture to manage the relationship between data and the way it is presented to the user. The separation of functionality introduced by this architecture gives developers greater flexibility to customize the presentation of items, and provides a standard model interface to allow a wide range of data sources to be used with existing item views.

Moving Window Proxy Model/View

Suggested By VRonin Summary Add a proxy model (possibly paired with a view) that allows user to look just at a fixed number of items without having to load the entire (possibly massive) source model in the view. Skills Required C++ Difficulty Medium Possible Mentors VRonin Notes Mentioning availability is restricted to my free time. Comments

Flexible Proxy Model

Suggested By VRonin Summary A QStandardItemModel-based proxy model that allows to use blocked features of other models. The typical example is adding the ability to edit a QSqlQueryModel or set roles other than the main one on its items Skills Required C++ Difficulty Easy Possible Mentors VRonin Notes Mentioning availability is restricted to my free time. Comments

Categoriser Proxy Model

Suggested By VRonin Summary A proxy to transform a typical database structure into a tree. Skills Required C++ Difficulty Medium Possible Mentors VRonin Notes Mentioning availability is restricted to my free time. Comments

Example

Europe	Germany	Berlin
Europe	France	Paris
Europe	Germany	Munich
America	USA	New York
America	Peru	Lima

Becomes:

• Europe
  • Germany
    • Berlin
    • Munich
  • France
    • Paris
• America
  • USA
    • New York
  • Peru
    • Lima

Qt Creator

Qt Creator is a powerful IDE for C/C++ development with and without Qt.

Language Server

Suggested By TobiasHunger Summary Visual Studio Code introduced support for Language Servers. These are stand-alone programs that implement a interface for IDEs to interact with, so that features like Go to Definition can be implemented there. It would be great if these language servers could also be used by Qt Creator. Skills Required C++ and Qt development skills Difficulty medium Possible Mentors Qt Creator Team Notes https://docs.microsoft.com/en-us/visualstudio/extensibility/language-server-protocol Comments

Meson Support

Suggested By TobiasHunger Summary Meson is a build system that has become popular with open source projects in the last couple of years. Qt Creator should be able to open meson projects natively. Skills Required C++/Qt and Python Difficulty medium Possible Mentors TobiasHunger Notes http://mesonbuild.com/ has details on meson. This will probably involve some work in meson to enable a fast IDE integration. Comments

Bazel Support

Suggested By TobiasHunger Summary Bazel is a fast build system by Google. Qt Creator should support projects using this build system natively. Skills Required C++/Qt Difficulty medium Possible Mentors TobiasHunger Notes https://bazel.build/ has details on bazel. Comments

Qt Wayland platform plugin

Implement support for various protocol extensions

Suggested By Johan Helsing Summary Some of these are easily implemented, other require more work. Pick as many as you think you can manage: xdg-shell: Recently released as stable. We already have support for xdg-shell unstable v6. Use this as a basis for supporting the stable version. server-decoration: Several compositors already implement the KDE protocol for switching off client side decorations. Very useful for tiling window managers. Implement support for it directly in Qt. https://github.com/KDE/kwayland/blob/master/src/client/protocols/server-decoration.xml idle-inhibit: Apps like movie players and similar that want to prevent screen savers and screenlockers can do it through this protocol. Implement it on Wayland and add Qt APIs so this can be implemented on other platforms as well. Other protocols in https://cgit.freedesktop.org/wayland/wayland-protocols/tree/unstable Skills Required C++/Qt Difficulty medium Possible Mentors Johan Helsing Notes Comments

Qt Quick

The Qt Quick module is the standard library for writing QML applications. While the Qt QML module provides the QML engine and language infrastructure, the Qt Quick module provides all the basic types necessary for creating user interfaces with QML.

QML photosphere/360 video viewer

Suggested By Paangele Summary Create a new QML element (or two separate ones) to display and interact with 360 photos and videos Skills Required C++ Difficulty Medium Possible Mentors Paangele Notes This project is intended to fully support 360 photos and videos in QML. This includes reading metadata, support for partial photospheres, blitting frame crops to zoom, etc. A starting point can be https://github.com/paoletto/qphotosphere Comments