QGeoView (QGV)

QGeoView is a Qt / C ++ widget for visualizing geographic data.

Headings

QGeoView allows to show different kind of geographic data, like tiled layers, raster or vector data. Component is based on QGraphicsView and focused on usability and performance. QGeoView public interface try to follow best practices from OpenLayers and Google Maps API and supports all basic map features, like:

• EPSG3857 projection (others can be added)
• Camera changes: scaling, rotation, moving
• TMS (OSM, Google, Bing or custom)
• Map control widgets

QGeoView uses a hierarchical object storage system, which can store both visual objects (for example, raster or shapes) and non-visual objects (for example, a layer of items). Override in paint event for the visual object allow you to show on the map any geo-data from any source. However, QGeoView itself does not provide methods for reading/parsing of geo-data sources (files). The only exception are TMS servers and bitmap images, for all other sources you need to extend solution.

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes.

Prerequisites

What things you need:

• C++11 compiler (GCC, Clang, MinGW,...)
• Qt 5.6 or higher (core, gui, widgets, network)
• qmake or cmake
• doxygen (optional)
• pre-commit (optional) https://pre-commit.com/

Installing

If you use qmake

cd <build-dir>
qmake <source-dir>/QGeoView.pro
make
make install QGV_DESTDIR=/path/to/install

If you use cmake

cd <build-dir>
cmake <source-dir>
cmake --build . --config Release --target install -- DESTDIR=/path/to/install

If you use doxygen (documentation)

cd <source-dir>
doxygen

Documentation and demo

Documentation: https://amonranet.github.io/QGeoView/

You can see here small video: QGeoView Demo or use demo example to see all QGeoView features:

<build-dir>/qgeoview-demo

Community

For additional help, join in the AmonRaNet Discord.

Author

Andrey Yaroshenko (AmonRaNet)

Credits

bakerb845 for helping with Qt6 adaptation raffmont for adding new features and capabilities

Versioning

QGeoView uses SemVer for versioning. For the versions available, see the tags on this repository.

License

This project is licensed under the LGPL License v3.