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