Writing Standalone Qt & Python Applications for Android
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KDE 2.0 Development, Which Is Directly Supported
23 8911 CH18 10/16/00 1:44 PM Page 401 The KDevelop IDE: The CHAPTER Integrated Development Environment for KDE by Ralf Nolden 18 IN THIS CHAPTER • General Issues 402 • Creating KDE 2.0 Applications 409 • Getting Started with the KDE 2.0 API 413 • The Classbrowser and Your Project 416 • The File Viewers—The Windows to Your Project Files 419 • The KDevelop Debugger 421 • KDevelop 2.0—A Preview 425 23 8911 CH18 10/16/00 1:44 PM Page 402 Developer Tools and Support 402 PART IV Although developing applications under UNIX systems can be a lot of fun, until now the pro- grammer was lacking a comfortable environment that takes away the usual standard activities that have to be done over and over in the process of programming. The KDevelop IDE closes this gap and makes it a joy to work within a complete, integrated development environment, combining the use of the GNU standard development tools such as the g++ compiler and the gdb debugger with the advantages of a GUI-based environment that automates all standard actions and allows the developer to concentrate on the work of writing software instead of managing command-line tools. It also offers direct and quick access to source files and docu- mentation. KDevelop primarily aims to provide the best means to rapidly set up and write KDE software; it also supports extended features such as GUI designing and translation in con- junction with other tools available especially for KDE development. The KDevelop IDE itself is published under the GNU Public License (GPL), like KDE, and is therefore publicly avail- able at no cost—including its source code—and it may be used both for free and for commer- cial development. -
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 -
Qml Controls from Scratch
CREATING QML CONTROLS FROM SCRATCH Chris Cortopassi Table of Contents Introduction ......................................................................................... 3 Part 0: Getting Started ......................................................................... 4 Part 1: Button ....................................................................................... 6 Part 2: CheckBox and RadioButton ...................................................... 8 Part 3: Switch ...................................................................................... 10 Part 4: Slider ........................................................................................ 12 Part 5: ScrollBar ................................................................................... 14 Part 6: ProgressBar.............................................................................. 15 Part 7: Spinner ..................................................................................... 16 Part 8: Dialog ....................................................................................... 17 Part 9: PageDots .................................................................................. 19 Part 10: Tabs ....................................................................................... 21 Part 11: Table ...................................................................................... 23 Part 12: TimePicker ............................................................................. 25 Part 13: DatePicker ............................................................................. -
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:: -
Simple Plotter Documentation Release 0.0.0
simple_plotter Documentation Release 0.0.0 Thies Hecker Mar 30, 2020 Contents: 1 Getting started 3 1.1 Desktop..................................................3 1.2 Android..................................................3 1.3 Configuration options..........................................4 1.4 Requirements...............................................4 1.5 Source code...............................................4 2 User guide 7 2.1 Overview.................................................7 2.2 Defining an equation...........................................7 2.3 Creating a plot..............................................8 2.4 Adjust the plot appearance........................................8 2.5 Constants.................................................9 2.6 Plotting curve sets............................................ 10 2.7 Plot labels................................................ 11 2.8 Load, save and export.......................................... 12 2.9 Advanced usage............................................. 12 3 Licenses 17 3.1 simple-plotter............................................... 17 3.2 simple-plotter-qt............................................. 18 3.3 simple-plotter4a............................................. 18 3.4 simple-plotter4a binary releases (Android)............................... 18 4 Contributing 43 4.1 Concept.................................................. 43 4.2 Package versions............................................. 43 4.3 Building conda packages........................................ -
A Pyqt GUI for a Soc Design a Pyqt GUI for a Soc Design SMR3249
Jose´ Antonio de la Torre las Heras Universidad de Castilla-La Mancha SMR3249 A PyQT GUI for a SoC design A PyQT GUI for a SoC design SMR3249 Contents 1 Vivado and SDK 4 2 main.c 9 3 Opening development environment 9 4 Designing the interface 11 4.1 Design in QtDesigner . 11 4.2 Exporting the interface . 18 5 Programming the controller 19 6 Testing the design 26 7 Optional exercises 31 7.1 Add controls to select a serial device and baudrate (easy) . 31 7.2 Use layouts to make tabs responsive . 31 7.3 Modify how pyqtgraph looks (easy) . 31 7.4 Modify how data is sent . 31 1 A PyQT GUI for a SoC design SMR3249 Introduction In this tutorial, you will learn how to communicate external devices like pmods sensors, and leds from Zedboard to a PC (frontend). In order to avoid privative software like: Matlab, Visual Basic, Labview. In this laboratory, we are going to use Python and different libraries which are completely free and open source. The advantages of using these kind of technologies are the following ones: you have control over all parts of your system and you don't need to trust in external companies and private design cycles. In this project, you will learn how to integrate a fully functional project from a reconfigurable part to high level programming in Python. The main objective of the project is that the student, at the end, understands how to integrate all the parts to create a final product. Objectives • To design a fully functional GUI (Graphical User Interface) • To create a controller of the GUI • To connect a Zedboard to the GUI • To control a Zedboard from the GUI • To get data and plot from Zedboard Procedure This project has different parts. -
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. -
Sailfish OS Interview Questions and Answers Guide
Sailfish OS Interview Questions And Answers Guide. Global Guideline. https://www.globalguideline.com/ Sailfish OS Interview Questions And Answers Global Guideline . COM Sailfish OS Job Interview Preparation Guide. Question # 1 Tell us what you know about Sailfish OS? Answer:- Sailfish is a Linux-based mobile operating system developed by Jolla in cooperation with the Mer project and supported by the Sailfish Alliance. It is to be used in upcoming smartphones by Jolla and other licencees. Although it is primarily targeted at mobile phones, it is also intended to support other categories of devices. Read More Answers. Question # 2 Explain Sailfish OS Components? Answer:- Jolla has revealed its plans to use the following technologies in Sailfish OS: The Mer software distribution core A custom built user interface HTML5 QML and Qt Read More Answers. Question # 3 Do you know about Sailfish OS software availability? Answer:- Sailfish will be able to run most applications that were originally developed for MeeGo and Android, in addition to native Sailfish applications. This will give it a large catalogue of available apps on launch. Considering upon Jolla's declarations that Sailfish OS is be able to use software from following platforms Sailfish (natively created + ported like from Qt, Symbian, MeeGo - developers have reported that porting a Qt written software with Sailfish SDK takes a few hours only) Android applications are directly running in Sailfish OS. They are compatible as they are in third-party Android stores, with no needed modification (in most cases). MeeGo (because of backward compatibility thanks to MeeGo code legacy included in the Mer core) Unix and Linux (as Sailfish is Linux then using such a software is possible, especially RPM packages, either in terminal/console mode or with limitations implying from using Sailfish UI, if not ported and adjusted) HTML5 Read More Answers. -
Download Pyqt Tutorial (PDF Version)
PyQt About the Tutorial PyQt is a GUI widgets toolkit. It is a Python interface for Qt, one of the most powerful, and popular cross-platform GUI library. PyQt is a blend of Python programming language and the Qt library. This introductory tutorial will assist you in creating graphical applications with the help of PyQt. Audience This tutorial is designed for software programmers who are keen on learning how to develop graphical applications using PyQt. Prerequisites You should have a basic understanding of computer programming terminologies. A basic understanding of Python and any of the programming languages is a plus. Disclaimer & Copyright Copyright 2015 by Tutorials Point (I) Pvt. Ltd. All the content and graphics published in this e-book are the property of Tutorials Point (I) Pvt. Ltd. The user of this e-book is prohibited to reuse, retain, copy, distribute or republish any contents or a part of contents of this e-book in any manner without written consent of the publisher. We strive to update the contents of our website and tutorials as timely and as precisely as possible, however, the contents may contain inaccuracies or errors. Tutorials Point (I) Pvt. Ltd. provides no guarantee regarding the accuracy, timeliness or completeness of our website or its contents including this tutorial. If you discover any errors on our website or in this tutorial, please notify us at [email protected]. i PyQt Table of Contents About the Tutorial .............................................................................................................................................. -
Kivy Documentation Release 1.9.2-Dev0
Kivy Documentation Release 1.9.2-dev0 www.kivy.org CONTENTS I User’s Guide3 1 Installation 5 2 Philosophy 25 3 Contributing 27 4 FAQ 39 5 Contact Us 43 II Programming Guide 45 6 Kivy Basics 47 7 Controlling the environment 53 8 Configure Kivy 57 9 Architectural Overview 59 10 Events and Properties 63 11 Input management 71 12 Widgets 77 13 Graphics 97 14 Kv language 99 15 Integrating with other Frameworks 109 16 Best Practices 113 17 Advanced Graphics 115 18 Packaging your application 117 III Tutorials 137 19 Pong Game Tutorial 139 i 20 A Simple Paint App 151 IV API Reference 161 21 Kivy framework 163 22 Adapters 249 23 Core Abstraction 257 24 Kivy module for binary dependencies. 283 25 Effects 285 26 Extension Support 289 27 Garden 293 28 Graphics 295 29 Input management 363 30 Kivy Language 381 31 External libraries 401 32 Modules 403 33 Network support 413 34 Storage 417 35 NO DOCUMENTATION (package kivy.tools) 423 36 Widgets 427 V Appendix 621 37 License 623 Python Module Index 625 ii Welcome to Kivy’s documentation. Kivy is an open source software library for the rapid development of applications equipped with novel user interfaces, such as multi-touch apps. We recommend that you get started with Getting Started. Then head over to the Programming Guide. We also have Create an application if you are impatient. You are probably wondering why you should be interested in using Kivy. There is a document outlining our Philosophy that we encourage you to read, and a detailed Architectural Overview.