Book Image

Windows Presentation Foundation 4.5 Cookbook

By : Pavel Yosifovich
Book Image

Windows Presentation Foundation 4.5 Cookbook

By: Pavel Yosifovich

Overview of this book

Windows Presentation Foundation (WPF) provides developers with a unified programming model for building rich Windows smart client user experiences that incorporate UI, media, and documents.WPF has become the leading technology for developing rich client applications on the Windows platform, packed with features and capabilities. However, WPF is big; in fact, it's huge, causing a steep learning curve for the beginner and even for those already using some WPF features.Windows Presentation Foundation 4.5 Cookbook provides clear recipes for common WPF tasks. It includes detailed explanations and code examples for customizing and enhancing the basic scenarios, while gaining a deep understanding of WPF mechanics and capabilities.WPF is different and requires a different mind-set and approach. This book provides recipes and insights not only in its design but also its practical implementation details.Starting from the foundations of WPF, such as dependency properties and XAML, the book touches on all major WPF aspects, such as controls and layout, resources, and digs deep into its unprecedented data binding capabilities.The book shows data and control templates in action, which allow full customizations of displayed data and controls in a declarative way. Supported by styles and resources makes data binding all the more powerful. The Model View View-Model pattern is presented as an effective way of maximizing decoupling of components, while providing an elegant way of expanding applications while maintaining a tight grip on complexity.The later parts discuss custom elements and controls ñ the ultimate customization mechanism, and looks at multithreading issues, and how .NET 4.5 task parallelism features can enhance application performance.
Table of Contents (18 chapters)
Windows Presentation Foundation 4.5 Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Creating custom animations


The three types of animations provided by WPF (property, path, and key frame) are declarative in nature, which is in large part what makes them easy to use. There's no need to handle timers, change positions manually, or anything like that.

Occasionally, dynamic changes are required which cannot be represented using the built-in animations. Examples include movements that use complex formulas and changes based on user interaction. In such scenarios, it's possible to perform the changes manually with some help from WPF.

Getting ready

Make sure Visual Studio is up and running.

How to do it...

We'll create a bouncing ball application that uses complex movements and optional user interaction to control the ball:

  1. Create a new WPF application named CH09.CustomAnimation.

  2. Add a new class named Ball. Add using statements to the System.ComponentModel and System.Windows namespaces.

  3. Implement the INotifyPropertyChanged interface with the event declaration and a simple OnPropertyChanged...