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Practical System Programming for Rust Developers

You're reading from   Practical System Programming for Rust Developers Build fast and secure software for Linux/Unix systems with the help of practical examples

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Product type Paperback
Published in Dec 2020
Publisher Packt
ISBN-13 9781800560963
Length 388 pages
Edition 1st Edition
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Tools
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Author (1):
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Prabhu Eshwarla Prabhu Eshwarla
Author Profile Icon Prabhu Eshwarla
Prabhu Eshwarla
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Table of Contents (17) Chapters Close

Preface 1. Section 1: Getting Started with System Programming in Rust
2. Chapter 1: Tools of the Trade – Rust Toolchains and Project Structures FREE CHAPTER 3. Chapter 2: A Tour of the Rust Programming Language 4. Chapter 3: Introduction to the Rust Standard Library 5. Chapter 4: Managing Environment, Command Line, and Time 6. Section 2: Managing and Controlling System Resources in Rust
7. Chapter 5: Memory Management in Rust 8. Chapter 6: Working with Files and Directories in Rust 9. Chapter 7: Implementing Terminal I/O in Rust 10. Chapter 8: Working with Processes and Signals 11. Chapter 9: Managing Concurrency 12. Section 3: Advanced Topics
13. Chapter 10: Working with Device I/O 14. Chapter 11: Learning Network Programming 15. Chapter 12: Writing Unsafe Rust and FFI 16. Other Books You May Enjoy

Processing mouse inputs

Like keyboard events, the Termion crate also supports the ability to listen for mouse events, track the mouse cursor location, and react to it in code. Let's see how to do this here.

Create a new source file called mouse-events.rs under src/bin.

Here is the code logic:

  1. Import the needed modules.
  2. Enable mouse support in the terminal.
  3. Clear the screen.
  4. Create an iterator over incoming events.
  5. Listen to mouse presses, release and hold events, and display the mouse cursor location on the terminal screen.

The code is explained in snippets corresponding to each of these points.

Let's first look at module imports:

  1. We're importing the termion crate modules for switching to raw mode, detecting the cursor position, and listening to mouse events:
    use std::io::{self, Write};
    use termion::cursor::{self, DetectCursorPos};
    use termion::event::*;
    use termion::input::{MouseTerminal, TermRead};
    use termion::raw::IntoRawMode...
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