Qt5 Python GUI programming cookbook : building responsive and powerful cross-platform applications with PyQt / B. M. Harwani.

Format:

Book

Author/Creator:

Harwani, B. M., author.

Language:

English

Subjects (All):

Python (Computer program language).

Graphical user interfaces (Computer systems)--Programming.

Graphical user interfaces (Computer systems).

Application software--Development.

Application software.

Physical Description:

1 online resource (462 pages)

Edition:

1st edition

Other Title:

Qt five Python graphical user interface programming cookbook

Place of Publication:

Birmingham : Packt, 2018.

System Details:

text file

Summary:

Over 60 recipes to help you design interactive, smart, and cross-platform GUI applications Key Features Get succinct QT solutions to pressing GUI programming problems in Python Learn how to effectively implement reactive programming Build customized applications that are robust and reliable Book Description PyQt is one of the best cross-platform interface toolkits currently available; it's stable, mature, and completely native. If you want control over all aspects of UI elements, PyQt is what you need. This book will guide you through every concept necessary to create fully functional GUI applications using PyQt, with only a few lines of code. As you expand your GUI using more widgets, you will cover networks, databases, and graphical libraries that greatly enhance its functionality. Next, the book guides you in using Qt Designer to design user interfaces and implementing and testing dialogs, events, the clipboard, and drag and drop functionality to customize your GUI. You will learn a variety of topics, such as look and feel customization, GUI animation, graphics rendering, implementing Google Maps, and more. Lastly, the book takes you through how Qt5 can help you to create cross-platform apps that are compatible with Android and iOS. You will be able to develop functional and appealing software using PyQt through interesting and fun recipes that will expand your knowledge of GUIs What you will learn Use basic Qt components, such as a radio button, combo box, and sliders Use QSpinBox and sliders to handle different signals generated on mouse clicks Work with different Qt layouts to meet user interface requirements Create custom widgets and set up customizations in your GUI Perform asynchronous I/O operations and thread handling in the Python GUI Employ network concepts, internet browsing, and Google Maps in UI Use graphics rendering and implement animation in your GUI Make your GUI application compatible with Android and iOS devices Who this book is for If you're an intermediate Python programmer wishing to enhance your coding skills by writing powerful GUIs in Python using PyQT, this is the book for you. Downloading the example code for this book You can download the example code files for all Packt books you have purchased from your account at http://www.PacktPub.com. If you purchased this book elsewhere, you can visit http://www.PacktPub.com/support and register to have the files e-mailed directly to you.

Contents:

Cover

Title Page

Copyright and Credits

Dedication

Packt Upsell

Contributors

Table of Contents

Preface

Chapter 1: Creating a User Interface with Qt Components

Introduction

PyQt

Ways of creating GUI applications

Displaying a welcome message

Understanding the Label widget

Methods

Understanding the Line Edit widget

Understanding the Push Button widget

How to do it...

How it works...

Using the Radio Button widget

Understanding Radio Button

Signal description

Grouping radio buttons

Getting ready

Displaying options in the form of checkboxes

Method application

Displaying two groups of checkboxes

Chapter 2: Event Handling - Signals and Slots

Using Signal/Slot Editor

Copying and pasting text from one Line Edit widget to another

Converting data types and making a small calculator

Using the Spin Box widget

Using scrollbars and sliders

Using List Widget

Selecting multiple list items from one List Widget and displaying them in another

Adding items into List Widget

Performing operations in List Widget

Methods provided by the QListWidgetItem class

How to do it....

Using the Combo Box widget

How to do it….

How it works...

Using the Font Combo Box widget

How to do it…

Using the Progress Bar widget

Chapter 3: Working with Date and Time

Displaying LCD digits

Using Timers

Using the QTime class

Displaying system clock time in LCD-like digits

Displaying the date selected by the user from Calendar Widget

Displaying a calendar

Using the QDate class

Using the Date Edit widget

Creating a hotel reservation form

Displaying tabular data using Table Widget

Table Widget

The QTableWidgetItem class

Chapter 4: Understanding OOP Concepts

Object-oriented programming

Creating a class

Using the built-in class attributes

Accessing class variables in instance methods

Instances

Using classes in GUI

Making the application more elaborate

Inheritance

Types of inheritance

Using single inheritance

Using multilevel inheritance

Using multiple inheritance

Chapter 5: Understanding Dialogs

The input dialog box

Using the input dialog

Using the color dialog

Using the font dialog

Using the file dialog

Chapter 6: Understanding Layouts

Understanding layouts

Spacers

Using Horizontal Layout

How to do it.

Using Vertical Layout

Using Grid Layout

Using Form Layout

Chapter 7: Networking and Managing Large Documents

Creating a small browser

Creating a server-side application

Establishing client-server communication

Creating a dockable and floatable sign-in form

Multiple Document Interface

Displaying information in sections using Tab Widget

Creating a custom menu bar

Chapter 8: Doing Asynchronous Programming in Python

Multithreading

Asynchronous programming

Updating progress bar using thread

Updating two progress bars using two threads

Updating progress bars using threads bound with a locking mechanism

Updating progress bars simultaneously using asynchronous operations

Managing resources using context manager

Context manager

Chapter 9: Database Handling

Creating the cursor object

Creating a database

How it works…

Creating a database table

Inserting rows in the specified database table

Displaying rows in the specified database table

How it works….

Navigating through the rows of the specified database table

Searching a database table for specific information

Creating a signin form - applying an authentication procedure

Updating a database table - changing a user's password

Deleting a row from a database table

Chapter 10: Using Graphics

Displaying mouse coordinates

Displaying coordinates where the mouse button is clicked and released

Displaying a point where the mouse button is clicked

Drawing a line between two mouse clicks

Drawing lines of different types

Drawing a circle of a desired size

Drawing a rectangle between two mouse clicks

Drawing text in a desired font and size

Creating a toolbar that shows different graphics tools

Plotting a line using Matplotlib

Plotting a bar using Matplotlib

Chapter 11: Implementing Animation

Implementing animation

Displaying a 2D graphical image

Making a ball move down on the click of a button

Making a bouncing ball

Making a ball animate as per the specified curve

Chapter 12: Using Google Maps.

Introduction

Finding out details of a location or a landmark

Getting complete information from latitude and longitude values

Finding out the distance between two locations

Displaying location on Google Maps

Chapter 13: Running Python Scripts on Android and iOS

Copying scripts from PC to Android devices

How to do it

Prompting for a username and displaying a welcome message

Understanding different buttons in a dialog box

Performing single selection from a list

Performing multiple selections from a list

Displaying a Date Picker dialog

Capturing images using a camera

Making an Android device speak a text input

Creating a cross-platform Python script using Kivy

Getting started

Packaging a Python Script into the Android APK using Buildozer

How it works

Packaging Python script for iOS

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Index.

Notes:

Description based on print version record.

OCLC:

1049177168