Pyside GUI Application Development Second Edition
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C/C++ Programming with Qt 5.12.6 and Opencv 4.2.0
C/C++ programming with Qt 5.12.6 and OpenCV 4.2.0 Preparation of the computer • Download http://download.qt.io/archive/qt/5.12/5.12.6/qt-opensource-windows- x86-5.12.6.exe and http://www.ensta-bretagne.fr/lebars/Share/OpenCV4.2.0.zip (contains OpenCV with extra modules built for Visual Studio 2015, 2017, 2019, MinGW Qt 5.12.6 x86, MinGW 8 x64), run Qt installer and select Qt\Qt 5.12.6\MinGW 7.3.0 32 bit and Qt\Tools\MinGW 7.3.0 32 bit options and extract OpenCV4.2.0.zip in C:\ (check that the extraction did not create an additional parent folder (we need to get only C:\OpenCV4.2.0\ instead of C:\OpenCV4.2.0\OpenCV4.2.0\), right-click and choose Run as administrator if needed). For Linux or macOS, additional/different steps might be necessary depending on the specific versions (and the provided .pro might need to be tweaked), see https://www.ensta-bretagne.fr/lebars/Share/setup_opencv_Ubuntu.pdf ; corresponding OpenCV sources : https://github.com/opencv/opencv/archive/4.2.0.zip and https://github.com/opencv/opencv_contrib/archive/4.2.0.zip ; Qt Linux 64 bit : https://download.qt.io/archive/qt/5.12/5.12.6/qt-opensource-linux-x64-5.12.6.run (for Ubuntu you can try sudo apt install qtcreator qt5-default build-essential but the version will probably not be the same); Qt macOS : https://download.qt.io/archive/qt/5.12/5.12.6/qt-opensource-mac-x64-5.12.6.dmg . -
Python Qt Tutorial Documentation Release 0.0
Python Qt tutorial Documentation Release 0.0 Thomas P. Robitaille Jun 11, 2018 Contents 1 Installing 3 2 Part 1 - Hello, World! 5 3 Part 2 - Buttons and events 7 4 Part 3 - Laying out widgets 9 5 Part 4 - Dynamically updating widgets 13 i ii Python Qt tutorial Documentation, Release 0.0 This is a short tutorial on using Qt from Python. There are two main versions of Qt in use (Qt4 and Qt5) and several Python libraries to use Qt from Python (PyQt and PySide), but rather than picking one of these, this tutorial makes use of the QtPy package which provides a way to use whatever Python Qt package is available. This is not meant to be a completely exhaustive tutorial but just a place to start if you’ve never done Qt development before, and it will be expanded over time. Contents 1 Python Qt tutorial Documentation, Release 0.0 2 Contents CHAPTER 1 Installing 1.1 conda If you use conda to manage your Python environment (for example as part of Anaconda or Miniconda), you can easily install Qt, PyQt5, and QtPy (a common interface to all Python Qt bindings) using: conda install pyqt qtpy 1.2 pip If you don’t make use of conda, an easy way to install Qt, PyQt5, and QtPy is to do: pip install pyqt5 qtpy 3 Python Qt tutorial Documentation, Release 0.0 4 Chapter 1. Installing CHAPTER 2 Part 1 - Hello, World! To start off, we need to create a QApplication object, which represents the overall application: from qtpy.QtWidgets import QApplication app= QApplication([]) You will always need to ensure that a QApplication object exists, otherwise your Python script will terminate with an error if you try and use any other Qt objects. -
Testing Pyside/Pyqt Code Using the Pytest Framework and Pytest-Qt
Testing PySide/PyQt Code Using the pytest framework and pytest-qt Florian Bruhin “The Compiler” Bruhin Software 06. November 2019 Qt World Summit, Berlin About me • 2011: Started using Python • 2013: Started using PyQt and developing qutebrowser • 2015: Switched to pytest, ended up as a maintainer • 2017: qutebrowser v1.0.0, QtWebEngine by default • 2019: 40% employed, 60% open-source and freelancing (Bruhin Software) Giving trainings and talks at various conferences and companies! Relevant Python features Decorators registered_functions: List[Callable] = [] def register(f: Callable) -> Callable: registered_functions.append(f) return f @register def func() -> None: .... Relevant Python features Context Managers def write_file() -> None: with open("test.txt", "w") as f: f.write("Hello World") Defining your own: Object with special __enter__ and __exit__ methods. Relevant Python features Generators/yield def gen_values() -> Iterable[int] for i in range(4): yield i print(gen_values()) # <generator object gen_values at 0x...> print(list(gen_values())) # [0, 1, 2, 3] PyQt • Started in 1998 (!) by Riverbank Computing • GPL/commercial • Qt4 $ PyQt4 Qt5 $ PyQt5 PySide / Qt for Python • Started in 2009 by Nokia • Unmaintained for a long time • Since 2016: Officially maintained by the Qt Company again • LGPL/commercial • Qt4 $ PySide Qt5 $ PySide2 (Qt for Python) Qt and Python import sys from PySide2.QtWidgets import QApplication, QWidget, QPushButton if __name__ == "__main__": app = QApplication(sys.argv) window = QWidget() button = QPushButton("Don't -
An Introduction to Qt 4
AnAn IntroductionIntroduction toto QtQt 44 Jason Trent [email protected] OOuutltliinnee . Why Trolltech? . Why Qt? . Qt 4 Widgets, Datatypes, and Structures . Qt Designer . qmake . Qt without C++ . Demo WWhhyy TTrroolllltetecchh?? .. QQtt aanndd QQttooppiiaa CCoorree aarree OOppeenn SSoouurrccee .. SSuuppppoorrtteedd bbyy mmuullttii--mmiilllliioonn ddoollllaarr ccoommppaannyy WWhhyy QQt?t? .. MMuullttii--ppllaattffoorrmm – No “virtual machines” or emulation layers – Native compilation for Windows, X11, and Mac • Utilizes core OS technologies (Core, Aero, …) – Extensions - ActiveQt, Motif Migration WWhhyy QQt?t? Over 400 C++ Classes . Not just a GUI toolkit – File handling – Networking – Process handling – Threading – Database access – Event loop processing – XML processing – OpenGL integration – and beyond WWhhyy QQt?t? .. IInntteerrnnaattiioonnaalliizzaattiioonn – Built in support for Unicode and Translation • Language and font aware layouts • Bidirectional font support • Mixed-international interface .. SSeeee QQtt LLiinngguuiisstt ffoorr mmoorree WWhhyy QQt?t? .. NNoott jjuusstt mmuuttllii--ppllaattiiffoorrmm,, mmuullttii--aarrcchhiitteeccttuurree .. QQttooppiiaa CCoorree 44 SSeerriieess – Support for embedded devices • Cell phones, PDAs, etc… – Supports Qt4 widgets with little to no code change QQWWiiddggeett TThhee mmeeeekk mmaayy iinnhheerriitt tthhee eeaarrtthh…… ……bbuutt tthhee eeaarrtthh sshhaallll iinnhheerriitt QQWWiiddggeett QWidget QQtt 44 WWiiddggeetsts .. IInnhheerriitt tthhee aallll--ppoowweerrffuull QQWWiiddggeett .. IInncclluuddee:: -
Qt Framework
About Qt Qt is a framework to develop cross-platform applications. Currently, the supported platforms are Windows, Linux, macOS, Android, iOS, Embedded Linux and some others. Genarally, it means that the programmer may develop the code on one platform but compile, link and run it on another platform. But it also means that Qt needs help: to develop software it must cooperate with development tools on specific platforms, for example in case of Windows with Visual Studio. Qt is well-known for its tools for developing graphical user interfaces (GUI) , but it also provides powerful tools for threads, networking and communication (Bluetooth, serial port, web), 3D graphics, multimedia, SQL databases, etc. Qt has its own Integrated Development Environment (IDE): QtCreator. History: 1991: version 1.0 as cross-platform GUI programming toolkit was developed and implemented by TrollTech (Norway). 2005: version 4.0 was a big step ahead but the compatibility with older versions was lost. 2008: TrollTech was sold to Nokia. 2012: Nokia Qt division was sold to Digia (Finland). 2014: Digia transferred the Qt business to Qt Company. The latest Long Term Support (LTS) version is 5.12. Official website: https://www.qt.io/ Installation The link is https://www.qt.io/download. Select the non-commercial and open source version. It may be possible that you must register yourself creating a new passworded account. Select the latest stable release and the C/C++ development system(s) you are going to use. Tip: the Qt installer proposes to store the stuff in folder C:\Qt. To avoid later complications, agree. -
Qt Long Term Support
Qt Long Term Support Jeramie disapprove chorally as moreish Biff jostling her canneries co-author impassably. Rudolfo never anatomise any redemptioner sauces appetizingly, is Torre lexical and overripe enough? Post-free Adolph usually stetted some basidiospores or flutes effeminately. Kde qt versions to the tests should be long qt term support for backing up qt company What will i, long qt term support for sale in the long. It is hard not even wonder what our cost whereas the Qt community or be. Please enter your support available to long term support available to notify others of the terms. What tests are needed? You should i restarted the terms were examined further development and will be supported for arrhythmia, or the condition? Define ad slots and config. Also, have a look at the comments below for new findings. You later need to compile your own Qt against a WEC SDK which is typically shipped by the BSP vendor. If system only involve half open the features of Qt Commercial, vision will not warrant the full price. Are you javer for long term support life cycles that supports the latter occurs earlier that opens up. Cmake will be happy to dry secretions, mutation will i could be seen at. QObjects can also send signals to themselves. Q_DECL_CONSTEXPR fix memory problem. Enables qt syndrome have long term in terms and linux. There has been lots of hype around the increasing role that machine learning, and artificial intelligence more broadly, will play in how we automate the management of IT systems. Vf noninducible at qt and long term in terms were performed at. -
Asyncprotect T1 Extunderscore Gui Documentation
async_gui Documentation Release 0.1.1 Roman Haritonov Aug 21, 2017 Contents 1 Usage 1 1.1 Installation................................................1 1.2 First steps.................................................1 1.3 Tasks in threads.............................................2 1.4 Tasks in processes............................................3 1.5 Tasks in greenlets.............................................3 1.6 Returning result.............................................3 2 Supported GUI toolkits 5 3 API 7 3.1 engine..................................................7 3.2 tasks...................................................8 3.3 gevent_tasks...............................................9 4 Indices and tables 11 Python Module Index 13 i ii CHAPTER 1 Usage Installation Install with pip or easy_install: $ pip install --upgrade async_gui or download latest version from GitHub: $ git clone https://github.com/reclosedev/async_gui.git $ cd async_gui $ python setup.py install To run tests: $ python setup.py test First steps First create Engine instance corresponding to your GUI toolkit (see Supported GUI toolkits): from async_gui.tasks import Task from async_gui.toolkits.pyqt import PyQtEngine engine= PyQtEngine() It contains decorator @engine.async which allows you to write asynchronous code in serial way without callbacks. Example button click handler: @engine.async def on_button_click(self, *args): self.status_label.setText("Downloading image...") 1 async_gui Documentation, Release 0.1.1 # Run single task in separate thread -
CIS192 Python Programming Graphical User Interfaces
CIS192 Python Programming Graphical User Interfaces Robert Rand University of Pennsylvania November 19, 2015 Robert Rand (University of Pennsylvania) CIS 192 November 19, 2015 1 / 20 Outline 1 Graphical User Interface Tkinter Other Graphics Modules 2 Text User Interface curses Other Text Interface Modules Robert Rand (University of Pennsylvania) CIS 192 November 19, 2015 2 / 20 Tkinter The module Tkinter is a wrapper of the graphics library Tcl/Tk Why choose Tkinter over other graphics modules I It’s bundled with Python so you don’t need to install anything I It’s fast I Guido van Rossum helped write the Python interface The docs for Tkinter aren’t that good I The docs for Tk/Tcl are much better I Tk/Tcl functions translate well to Tkinter I It’s helpful to learn the basic syntax of Tk/Tcl Tk/Tcl syntax ! Python: I class .var_name -key1 val1 -key2 val2 ! var_name = class(key1=val1, key2=val2) I .var_name method -key val ! var_name.method(key=val) Robert Rand (University of Pennsylvania) CIS 192 November 19, 2015 3 / 20 Bare Bones Tkinter from Tkinter import Frame class SomeApp(Frame): def __init__(self, master=None): tk.Frame.__init__(self, master) def main(): root = tk.Tk() app = SomeApp(master=root) app.mainloop() if __name__ ==’__main__’: main() Robert Rand (University of Pennsylvania) CIS 192 November 19, 2015 4 / 20 Images By default, Tkinter only supports bitmap, gif, and ppm/pgm images More images are supported with Pillow Pillow is a fork of Python Imaging Library pip install pillow from PIL import Image, ImageTk Create a PIL -
Pyqt for Autodesk Maya 2015 64Bit
PyQt for Autodesk Maya 2015 64bit Written by Cyrille Fauvel – Autodesk Developer Network (April 2013) Updated by Vijaya Prakash – Autodesk Developer Network (April 2014) Additional Qt instructions available here - http://around-the-corner.typepad.com/adn/2014/04/building-sip-and-pyqt-for-maya-2015.html Building SIP, and PyQt for Maya 2015 PyQt [http://www.riverbankcomputing.co.uk] is a python binding to the Qt library. Because Maya uses Qt internally, you can use the PyQt modules in Maya python scripts to create custom UI. PyQt does not have the same licensing as Maya, Qt, or Python. Please consult the PyQt website for information about licensing for PyQt. Download PyQt: http://www.riverbankcomputing.com/static/Downloads/PyQt4/ Download SIP: http://www.riverbankcomputing.com/software/sip/download The following are instructions for building a copy of the PyQt modules that have been known to work with Maya. Maya 2015 uses Qt4.8.5 which is binary compatible with the latest version of PyQt - 4.10.4 / SIP - 4.15.5 (at time of writing, April 2014). However, you do not have to use these versions if you prefer using an older version, all you need is to use a version compatible with Qt4.8.5. Note that it’s important to use the Maya modified version of the Qt source code. A copy of the customized Qt 4.8.5 source is available from Autodesk's Open Source web-site (http://www.autodesk.com/lgplsource) and includes text files describing how to configure, build and install Qt for each platform supported by Maya. -
1 Australian Synchrotron
EPICS Qt Update Paul Martin 1 Australian Synchrotron • 3GeV, 216m circumference synchrotron • 8 Beamlines • 12 Software Engineers • IMBL – Worlds Widest Beam - MRT Clinical Program – Safety Critical • Melbourne, Australia • Nearest other facilities: Taiwan, Thailand, Japan • 16th Most Urbanized Country • World’s most livable cities • Hosting ICALEPCS in 2015 2 Qt • Qt is a cross-platform application and UI framework for developers using C++ – Windows,OS X, Linux, Embedded Linux, Android, iOS, vxWorks, Win CE, Amiga OS • Open Source (LPGL v2.1) Qt Designer • Trolltech -> Nokia -> Digia, • Development tools: Qt Creator, Qt Designer, Qmake, Qt Linguist, Qt Assistant, Integration into Visual Studio • Rich set of Widgets and other classes (1000+), Qwt (125+) • Very Good Documentation, help, examples • All Qt Objects contain powerful object communication Qt Creator mechanism (Signal+Slots) • GUI Layout widgets • Qt Project: www.qt-project.org 3 EPICS Qt – Team • Started 2009 – Anthony Owen, Andrew Rhyder, Glenn Jackson • Joined 2011 – Andy Starritt • Joined 2012 – Ricardo Fernandez • Joined 2013 – Zai Wang (1 year contract) 4 EPICS Qt – Rapid GUI Development • Adds Channel Access to standard Qt Widgets and Data Classes • Rapid GUI Dev – Drag and Drop EPICS aware components in Qt Designer • Macro Substitutions for PV names and other GUI functions Qt Designer Channel Access running at design time .ui file – presented using QEGui on any platform (windows / linux) 5 EPICS Qt – Other App Types QCaString Qt Creator QCaInteger QCaFloating QCaByteArray -
Kdesrc-Build Script Manual
kdesrc-build Script Manual Michael Pyne Carlos Woelz kdesrc-build Script Manual 2 Contents 1 Introduction 8 1.1 A brief introduction to kdesrc-build . .8 1.1.1 What is kdesrc-build? . .8 1.1.2 kdesrc-build operation ‘in a nutshell’ . .8 1.2 Documentation Overview . .9 2 Getting Started 10 2.1 Preparing the System to Build KDE . 10 2.1.1 Setup a new user account . 10 2.1.2 Ensure your system is ready to build KDE software . 10 2.1.3 Setup kdesrc-build . 12 2.1.3.1 Install kdesrc-build . 12 2.1.3.2 Prepare the configuration file . 12 2.1.3.2.1 Manual setup of configuration file . 12 2.2 Setting the Configuration Data . 13 2.3 Using the kdesrc-build script . 14 2.3.1 Loading project metadata . 14 2.3.2 Previewing what will happen when kdesrc-build runs . 14 2.3.3 Resolving build failures . 15 2.4 Building specific modules . 16 2.5 Setting the Environment to Run Your KDEPlasma Desktop . 17 2.5.1 Automatically installing a login driver . 18 2.5.1.1 Adding xsession support for distributions . 18 2.5.1.2 Manually adding support for xsession . 18 2.5.2 Setting up the environment manually . 19 2.6 Module Organization and selection . 19 2.6.1 KDE Software Organization . 19 2.6.2 Selecting modules to build . 19 2.6.3 Module Sets . 20 2.6.3.1 The basic module set concept . 20 2.6.3.2 Special Support for KDE module sets . -
Multiplatformní GUI Toolkity GTK+ a Qt
Multiplatformní GUI toolkity GTK+ a Qt Jan Outrata KATEDRA INFORMATIKY UNIVERZITA PALACKÉHO V OLOMOUCI GUI toolkit (widget toolkit) (1) = programová knihovna (nebo kolekce knihoven) implementující prvky GUI = widgety (tlačítka, seznamy, menu, posuvník, bary, dialog, okno atd.) a umožňující tvorbu GUI (grafického uživatelského rozhraní) aplikace vlastní jednotný nebo nativní (pro platformu/systém) vzhled widgetů, možnost stylování nízkoúrovňové (Xt a Xlib v X Windows System a libwayland ve Waylandu na unixových systémech, GDI Windows API, Quartz a Carbon v Apple Mac OS) a vysokoúrovňové (MFC, WTL, WPF a Windows Forms v MS Windows, Cocoa v Apple Mac OS X, Motif/Lesstif, Xaw a XForms na unixových systémech) multiplatformní = pro více platforem (MS Windows, GNU/Linux, Apple Mac OS X, mobilní) nebo platformově nezávislé (Java) – aplikace může být také (většinou) událostmi řízené programování (event-driven programming) – toolkit v hlavní smyčce zachytává události (uživatelské od myši nebo klávesnice, od časovače, systému, aplikace samotné atd.) a umožňuje implementaci vlastních obsluh (even handler, callback function), objektově orientované programování (objekty = widgety aj.) – nevyžaduje OO programovací jazyk! Jan Outrata (Univerzita Palackého v Olomouci) Multiplatformní GUI toolkity duben 2015 1 / 10 GUI toolkit (widget toolkit) (2) language binding = API (aplikační programové rozhraní) toolkitu v jiném prog. jazyce než původní API a toolkit samotný GUI designer/builder = WYSIWYG nástroj pro tvorbu GUI s využitím toolkitu, hierarchicky skládáním prvků, z uloženého XML pak generuje kód nebo GUI vytvoří za běhu aplikace nekomerční (GNU (L)GPL, MIT, open source) i komerční licence např. GTK+ (C), Qt (C++), wxWidgets (C++), FLTK (C++), CEGUI (C++), Swing/JFC (Java), SWT (Java), JavaFX (Java), Tcl/Tk (Tcl), XUL (XML) aj.