autogui 0.4.1

GUI Automation toolbox for Rust
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use core_graphics::event::{CGEvent, CGEventType, CGMouseButton, EventField};
use core_graphics::geometry::CGPoint;

use super::{get_default_source, post_event};
use action::MouseButton;

fn post_mouse_event(et: CGEventType, p: CGPoint, b: Option<CGMouseButton>) {
    // https://developer.apple.com/documentation/coregraphics/cgevent/1454356-init
    post_event(
        CGEvent::new_mouse_event(
            get_default_source(),
            et,
            p,
            b.unwrap_or(CGMouseButton::Left), // Usually ignored (see docs)
        )
        .unwrap(),
    );
}

pub(super) fn mouse_down(button: MouseButton, p: CGPoint) {
    let b = match button {
        MouseButton::Left => CGEventType::LeftMouseDown,
        MouseButton::Right => CGEventType::RightMouseDown,
    };

    post_mouse_event(b, p, None);
}

pub(super) fn mouse_up(button: MouseButton, p: CGPoint) {
    let b = match button {
        MouseButton::Left => CGEventType::LeftMouseUp,
        MouseButton::Right => CGEventType::RightMouseUp,
    };

    post_mouse_event(b, p, None);
}

/// https://stackoverflow.com/a/1483666/2867076
pub(super) fn mouse_n_click(button: MouseButton, p: CGPoint, n: u8) {
    assert!(1 <= n && n <= 3);

    if n == 1 {
        // singleclick optimization
        mouse_down(button, p);
        mouse_up(button, p);
        return;
    }

    let b_down = match button {
        MouseButton::Left => CGEventType::LeftMouseDown,
        MouseButton::Right => CGEventType::RightMouseDown,
    };

    let b_up = match button {
        MouseButton::Left => CGEventType::LeftMouseUp,
        MouseButton::Right => CGEventType::RightMouseUp,
    };

    let event = CGEvent::new_mouse_event(
        get_default_source(),
        b_down,
        p,
        CGMouseButton::Left, // Ignored here (see docs)
    )
    .unwrap();

    event.set_integer_value_field(EventField::MOUSE_EVENT_CLICK_STATE, n as i64);
    post_event(event.clone());
    event.set_type(b_up);
    post_event(event.clone());

    mouse_up(button, p);

    for _ in 0..(n - 1) {
        event.set_type(b_down);
        post_event(event.clone());
        event.set_type(b_up);
        post_event(event.clone());
    }
}

pub(super) fn mouse_drag(button: MouseButton, p: CGPoint) {
    let b = match button {
        MouseButton::Left => CGEventType::LeftMouseDragged,
        MouseButton::Right => CGEventType::RightMouseDragged,
    };

    post_mouse_event(b, p, None);
}

pub(super) fn mouse_move(p: CGPoint) {
    post_mouse_event(CGEventType::MouseMoved, p, None);
}