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https://github.com/kdab/gammaray

GammaRay is a tool to poke around in a Qt-application and also to manipulate the application to some extent.
https://github.com/kdab/gammaray

kdab qt

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GammaRay is a tool to poke around in a Qt-application and also to manipulate the application to some extent.

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README 

        
#  [![Logo](ui/resources/gammaray/ui/light/pixmaps/[email protected])](https://www.kdab.com/gammaray)



GammaRay is a software introspection tool for Qt applications developed by KDAB.

Leveraging the QObject introspection mechanism it allows you to observe and

manipulate your application at runtime. This works both locally on your

workstation and remotely on an embedded target.



Augmenting your instruction-level debugger, GammaRay allows you to work on a

much higher level, with the same concepts as the frameworks you use. This is

especially useful for the more complex Qt frameworks such as model/view, state

machines or scene graphs.



Among other things GammaRay can:



* Browse the `QObject` tree with live updates.

* View and edit object properties.

* View and invoke slots of a `QObject`, and monitor its signals.

* List all `QObject` inbound and outbound signal/slot connections.

* Provide a layout information overlay for `QWidget` and `QtQuick2` applications.

* Inspect all `QPainter` operations used to draw a specific widget.

* Browse the `QtQuick2` item tree and scenegraph.

* Inspect shaders and geometry data of QtQuick2 items.

* Plot object lifetime and emitted signals.

* Browse the `QAbstractProxyModel` hierarchy and inspect intermediate results in a proxy model chain.

* Visual live inspection of QStateMachines.

* Browse the item tree of any `QGraphicsView` scene.

* Show a live preview of `QGraphicsView` items, including showing their coordinate system,

  transformation origin, rotate/zoom/pan, etc.

* Intercept translations and change them at runtime.

* Inspect all building blocks of a `QStyle`.

* Show all QTimers and their statistics (number of wakeups, wakeup time, ...)

* Browse all QTextDocuments, along with the ability to edit them and view their internal structures.

* Act as a complete java script debugger, attachable to any `QScriptEngine`

  (including the usually not accessible one used by QtQuick1 internally).

* Perform HTML/CSS/DOM/JS introspection/editing/profiling on any QWebPage, thanks to QWebInspector.

* Browse the QResource tree and its content.

* Show all registered meta types.

* Show all installed fonts.

* Show all available codecs.



## Building GammaRay



[See installation notes](INSTALL.md)



## Contact



* See our official home page: 

* Visit us on GitHub: 

* Email [email protected] for questions about copyright, licensing or commercial support.



Stay up-to-date with KDAB product announcements:



* [KDAB Newsletter](https://news.kdab.com)

* [KDAB Blogs](https://www.kdab.com/category/blogs)

* [KDAB on Twitter](https://twitter.com/KDABQt)



## Get Involved



If you want to contribute, please check out: 



Please submit your contributions or issue reports from our GitHub space at

.



KDAB will happily accept external contributions; however, **all** contributions

require a signed KDAB Copyright Assignment Agreement.



* Individual contributors (non-employees) are required to electronically agree

  to the KDAB CLA using the GitHub cla-assistant hook.



* Employees, representing their company, must email a completed and signed

  [KDAB Copyright Assignment Agreement](https://github.com/KDAB/GammaRay/blob/master/docs/GammaRay-CopyrightAssignmentForm.pdf)

  to [email protected].



This is needed so we can continue to dual-license GammaRay.

Contact [email protected] for more information.



Thanks to our [contributors](CONTRIBUTORS.txt).



## License



The GammaRay Software is © Klarälvdalens Datakonsult AB (KDAB), and is

available under the terms of the GPL version 2 (or any later version,

at your option).  See [GPL-2.0-or-later.txt](LICENSES/GPL-2.0-or-later.txt)

for license details.



Contact KDAB at  to inquire about commercial licensing.



For terms of redistribution, refer to the corresponding license agreement.



Note that this software relies on 3rd party MIT-licensed projects

and various other freely distributable files some of which are

unused only for testing and not part of the application itself.



For convenience, GammaRay source bundles (.tar.gz or .zip files) contain code for

the [graphviz library](https://gitlab.com/graphviz/graphviz) which is licensed

according to the [Eclipse Public License v1.0](https://www.eclipse.org/legal/epl/epl-v10.html).



## About KDAB



GammaRay is supported and maintained by Klarälvdalens Datakonsult AB (KDAB).



The KDAB Group is the global No.1 software consultancy for Qt, C++ and

OpenGL applications across desktop, embedded and mobile platforms.



The KDAB Group provides consulting and mentoring for developing Qt applications

from scratch and in porting from all popular and legacy frameworks to Qt.

We continue to help develop parts of Qt and are one of the major contributors

to the Qt Project. We can give advanced or standard trainings anywhere

around the globe on Qt as well as C++, OpenGL, 3D and more.



If you would like to have a custom plugin for GammaRay to visualize, profile

or debug your own specific components or applications, get in touch with us

via .  KDAB engineers know how to write GammaRay

plugins and can be contracted to help you get yours working and improve your

development efficiency.



GammaRay and the GammaRay logo are registered trademarks of Klarälvdalens Datakonsult AB

in the European Union, the United States and/or other countries.  Other product and

company names and logos may be trademarks or registered trademarks of their respective companies.