Kivy - Interactive Applications and Games in Python

Book Image

Kivy - Interactive Applications and Games in Python

By : Roberto Ulloa

Book Image

Kivy - Interactive Applications and Games in Python

By: Roberto Ulloa

Overview of this book

Kivy – Interactive Applications and Games in Python Second Edition

Kivy – Interactive Applications and Games in Python Second Edition

Credits

About the Author

About the Author

About the Reviewers

About the Reviewers

www.PacktPub.com

www.PacktPub.com

Preface

Free Chapter

GUI Basics – Building an Interface

GUI Basics – Building an Interface

Basic interface – Hello World!

Basic widgets – labels and buttons

Embedding layouts

PageLayout – swiping pages

Our project – Comic Creator

Graphics – the Canvas

Graphics – the Canvas

Understanding the canvas

Drawing basic shapes

Adding images, colors, and backgrounds

Structuring graphic instructions

Rotating, translating, and scaling the coordinate space

Comic Creator: PushMatrix and PopMatrix

Widget Events – Binding Actions

Widget Events – Binding Actions

Attributes, ID, and root

Basic widget events – dragging the stickman

Localizing coordinates – adding stickmen

Binding and unbinding events – sizing limbs and heads

Binding events in the Kivy language

Creating your own events – the magical properties

Kivy and its properties

Improving the User Experience

Improving the User Experience

ScreenManager – selecting colors for the figures

Color control on the canvas – coloring figures

StencilView – limiting the drawing space

Scatter – multi-touching to drag, rotate, and scale

Recording gestures – line, circle, and cross

Recognizing gestures – drawing with the finger

Behaviors – enhancing widget's functionality

Style – decorating the interface

Factory – replacing a vertex instruction

Invaders Revenge – an Interactive Multi-touch Game

Invaders Revenge – an Interactive Multi-touch Game

Invaders Revenge – an animated multi-touch game

Atlas – An efficient management of images

Boom – simple sound effects

Ammo – simple animation

Invader – transitions for animations

Dock – automatic binding in the Kivy language

Fleet – infinite concatenation of animations

Scheduling events with the clock

Shooter – multi-touch control

Invasion – moving the shooter with the keyboard

Combining animations with '+' and '&'

Kivy Player – a TED Video Streamer

Kivy Player – a TED Video Streamer

Video – play, pause, and stop

AsyncImage – creating a cover for the video

Subtitles – tracking the video progression

Control bar – adding buttons to control the video

Slider – including a progression bar

Animation – hiding a widget

Kivy inspector – debugging interfaces

ActionBar – a responsive bar

LoadDialog – displaying a directory of files

ScrollView – displaying a list of videos

Search – query the TED Developer API

Index

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Summary

In this chapter, we created an application that integrates many Kivy components. We discussed how to control a video and how to associate different elements of the screen with it. We explored different Kivy widgets and implemented a complex interaction to display a scrollable list of elements. Here is the list of new classes and components that we used in this chapter:

Video: The allow_stretch and source properties inherited from Image; the state and progress properties; the _on_load, on_eos, on_source and on_state, on_position, seek methods
AsyncImage: The source property inherited from Image; the opacity (inherited from Widget) property
Label: The texture_size property
Slider: The value and max properties Touch: The double_tap key
The Kivy Inspector class
The ActionBar, ActionView, ActionItem ActionPrevious, ActionToggleButton ActionGroup, and ActionButton classes, with use_separator of ActionView and title of ActionPrevious properties
Textinput: The background_color, foreground_color...