Embracing Qt for Python

Embracing Qt for
Python
Nicki Schumacher, Sr. Director Key Accounts, The Qt Company
Dr. Cristián Maureira-Fredes, R&D Manager, The Qt Company
Paul Miller, Principal Engineer, Silhouette FX
July 16, 2020

› Dr. Cristián Maureira-Fredes,
Manager Research & Development ,The Qt
Company
› Cristián has been a Python enthusiast for more
than 10 years, and due to his academic
background he has been using it in different
topics like Image Processing, Artificial
Intelligence, Robotics, Data Science, and
Astrophysics. Currently he is a Manager of
Research & Development, Team lead for the
QtCore, QML and Qt for Python teams, and
continues as a Software Engineer at the Qt
Company working on the Qt for Python project.
Embracing Python
Dr. Cristián Maureira-Fredes
PANELIST

Built with Qt Customer Case: SilhouettteFX
Paul Miller
16 July 2020 © The Qt Company3
PANELIST
› Paul Miller, Principal Engineer, Silhouette
FX (Acquired by Boris FX)
› Paul Miller has developed widely-used
applications for the VFX industry for almost
30 years. In 2019 he was awarded an Emmy
and Academy Award for his design and
development of the Silhouette rotoscoping,
digital paint, and compositing system. His
company, Silhouette FX, was recently
acquired by Boris FX.

The Qt Company 2020 | @cmaureir
EmbracingEmbracing
FromFrom PrototypesPrototypes
toto ₕₕyybbᵣᵢᵣᵢdd ApplicationsApplications
Dr. Cristián Maureira-Fredes

Setup
Installation
Building from source
PySide
Widget based app (.ui, .qrc)
QML interaction
Other Python modules
Shiboken
C++ module to Python
C++/Python application
Outline 📖Outline 📖

before we start
What's the deal withWhat's the deal with PythonPython??
🤔

WebinarsWebinars && Conferences 💻Conferences 💻
Creating user interfaces with Qt for Python
Develop your first Qt for Python Application
Python and C++ interoperability with Shiboken
and many others!
doc.qt.io/qtforpython/videos.html

Documentation 📚Documentation 📚
General:
Shiboken:
Resources:
In progress
Video tutorials (Build, Contributing, etc)
Qt Creator example gallery
More tutorials and examples!
doc.qt.io/qtforpython
doc.qt.io/qtforpython/shiboken2
resources.qt.io

Binding generation ⏳Binding generation ⏳

Setup 🔨Setup 🔨

InstallingInstalling PySidePySide
What does that install?
pip install pyside2
▪PySide2 ✅
├── Qt modules ✅
├── pyside2-designer ✅
├── pyside2-rcc ✅
└── pyside2-uic ✅
▪Shiboken2 (module) ✅
└── shiboken2 ✅
▪Shiboken2_Generator (exe) ❌
└── shiboken2 ❌

InstallingInstalling Shiboken GeneratorShiboken Generator
the simple waythe simple way
But one needs to:
Set CLANG_INSTALL_DIR to the libclang directory
Add to PATH a Qt bin path with the same version
Add to LD_LIBRARY_PATH the Qt lib path with the same version
pip install
--index-url=http://download.qt.io/official_releases/QtForPython/
--trusted-host download.qt.io
shiboken2 pyside2 shiboken2_generator

InstallingInstalling Shiboken GeneratorShiboken Generator
the hard way?the hard way?
Set CLANG_INSTALL_DIR to the libclang directory
python setup.py install
# there are many other options!
doc.qt.io/qtforpython/gettingstarted.html

before jumping into the examples
WhichWhich IDEIDE should Ishould I useuse??

IDEs support 🖥IDEs support 🖥

Let's look at someLet's look at some codecode 💾💾https://maureira.xyz/qtvts2020/code

ResourcesResources
Technical Vision 🔭
Documentation 📚
Blogs, Webinars, Conferences, and more 🎉
qt.io/blog/2019/08/19/technical-vision-qt-python
doc.qt.io/qtforpython
resources.qt.io

What's our current state?What's our current state?
Released M2M Protocols wheels for commercial
users .
Got rid of a set of nasty bugs related to threading
🐞Catching up with Qt6 💪

What's next?What's next?
Currently in active development
Improvements to the documentation 📚
A campaign to add more examples started 🤖
Tooling to improve our lives 🔧Continue extending our commercial offering 🥳

but most importantly...
What doWhat do youyou need?need?
we are community driven.
🌟bugreports.qt.io

Q&A
💬 Let's talk!💬 Let's talk!
IRC
#qt-pyside on Freenode
Matrix
#qt-pyside:matrix.org
Telegram
Gitter
t.me/qtforpython
gitter.im/PySide/pyside2

Scripting Silhouette
Python for VFX with Qt for Python

Boris FX
Applications and plugins for VFX
Most written at least in part with
Qt & Python

Silhouette
Industry standard rotoscoping and
paint since 2005
Hundreds of feature ﬁlms and
television shows
Stereo conversion of feature ﬁlm
Academy Award, Emmy recipient
Highly extensible and customizable
using Python

Silhouette and Qt
Widgets-based desktop
application
Embedded Python interpreter
Built-in Python console
Built-in script editor
PySide2

Demo
Extending Silhouette with Qt
for Python

Learn more - Embracing Qt for Python
16 July 2020 © The Qt Company1
› Try Qt: https://www.qt.io/download
› Qt for Python: https://www.qt.io/qt-for-python
› Qt for Python Resources: https://resources.qt.io/qt-for-python-2
› Technical Vision: https://www.qt.io/blog/2019/08/19/technical-
vision-qt-python
› Documentation: https://doc.qt.io/qtforpython/
› Blogs, Webinars, Conferences and more ✨: https://resources.qt.io/
› Contact us: https://www.qt.io/contact-us
› IRC: #qt-pyside on Freednode
› Matrix: #qt-pyside:matrix.org
› Telegram: t.me/qtforpython
› Gitter: gitter.im/PySide/pyside2
SIGGRAPH
2020
AUG 25-27
Book a meeting
https://www.qt.io/events/siggraph-
2020-1586987037

Thank you
info@qt.io
https://www.qt.io/contact-us

Embracing Qt for Python

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