//! This is a WINDOWS specific implementation for input related action. use std::convert::TryFrom; use std::io; use std::sync::atomic::{AtomicU64, Ordering}; use crossterm_winapi::{ConsoleMode, Handle}; pub(crate) mod parse; pub(crate) mod poll; #[cfg(feature = "event-stream")] pub(crate) mod waker; const ENABLE_MOUSE_MODE: u32 = 0x0010 | 0x0080 | 0x0008; /// This is a either `u64::MAX` if it's uninitialized or a valid `u32` that stores the original /// console mode if it's initialized. static ORIGINAL_CONSOLE_MODE: AtomicU64 = AtomicU64::new(u64::MAX); /// Initializes the default console color. It will will be skipped if it has already been initialized. fn init_original_console_mode(original_mode: u32) { let _ = ORIGINAL_CONSOLE_MODE.compare_exchange( u64::MAX, u64::from(original_mode), Ordering::Relaxed, Ordering::Relaxed, ); } /// Returns the original console color, make sure to call `init_console_color` before calling this function. Otherwise this function will panic. fn original_console_mode() -> std::io::Result { u32::try_from(ORIGINAL_CONSOLE_MODE.load(Ordering::Relaxed)) .map_err(|_| io::Error::new(io::ErrorKind::Other, "Initial console modes not set")) } pub(crate) fn enable_mouse_capture() -> std::io::Result<()> { let mode = ConsoleMode::from(Handle::current_in_handle()?); init_original_console_mode(mode.mode()?); mode.set_mode(ENABLE_MOUSE_MODE)?; Ok(()) } pub(crate) fn disable_mouse_capture() -> std::io::Result<()> { let mode = ConsoleMode::from(Handle::current_in_handle()?); mode.set_mode(original_console_mode()?)?; Ok(()) }