feat: enable mouse move event when mouse is pressed on macos

[HuakunShen]

On MacOS, when mouse is pressed, no move event is emitted.
This prevents me from detecting drag event.

On both windows and linux, move event is emitted when mouse is pressed.

I think it's a better idea to add MouseDrag event to EventType, because Mac's native API already have this CGEventType::LeftMouseDragged.

But this requires also updating windows and linux API to stay consistent.
I may work on that later. This PR makes rdev behave the same way on all platforms.

[rustdesk]

@fufesou

[fufesou]

This PR works good.

1. Could you please change the example filename. simple.rs is not a good name.
2. Is there any way to support center(scroll) button, forward and backword buttons? This API is not good enough to support those events

   rdev/src/macos/listen.rs

   Line 46 in f9b60b1

   let tap = CGEventTapCreate(

I think it's a better idea to add MouseDrag event to EventType, because Mac's native API already have this CGEventType::LeftMouseDragged.

I'm not sure about it. Press flag and MouseMove event look enough to me.

[HuakunShen]

@fufesou I removed the simple.rs example

[rustdesk]

@fufesou

[Copilot]

Pull Request Overview

This PR addresses the absence of mouse move events during mouse drag actions on macOS by mapping Mac’s native left/right drag events to MouseMove events, thereby aligning behavior across platforms. Key changes include:

• Adding handling for CGEventType::LeftMouseDragged and CGEventType::RightMouseDragged in the macOS event conversion.
• Adjusting the type conversion in the USB HID code conversion tests.
• Introducing an example to demonstrate drag event handling.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/macos/common.rs	Adds handling for mouse drag events via MouseMove mapping.
src/codes_conv.rs	Updates type assertion from u32 to u16 in code conversion tests.
examples/dragging.rs	Provides an example demonstrating the handling of dragging events.

Comments suppressed due to low confidence (2)

examples/dragging.rs:1

• [nitpick] Consider adding a brief comment at the top of the example to explain its purpose and how it demonstrates the drag event handling.

use std::sync::atomic::AtomicBool;

src/codes_conv.rs:158

• Ensure that converting 'code2' to u16 does not lead to unexpected truncation; confirm that all USB HID code values are within the u16 range.

assert_eq!(code, code2 as u16)

[Copilot]

The logic for handling left and right mouse drag events is duplicated. Consider extracting the common event handling into a helper function to improve maintainability.

Suggested change

	CGEventType::LeftMouseDragged => {
	let point = cg_event.location();
	Some(EventType::MouseMove {
	x: point.x,
	y: point.y,
	})
	}
	CGEventType::RightMouseDragged => {
	let point = cg_event.location();
	Some(EventType::MouseMove {
	x: point.x,
	y: point.y,
	})
	}
	CGEventType::LeftMouseDragged => handle_mouse_drag(cg_event),
	CGEventType::RightMouseDragged => handle_mouse_drag(cg_event),

[fufesou]

This PR handles mouse events, but RustDesk uses mouse events from Flutter.
So this PR may not have much impact on RustDesk.

[HuakunShen]

This PR handles mouse events, but RustDesk uses mouse events from Flutter. So this PR may not have much impact on RustDesk.

This PR handles mouse events, but RustDesk uses mouse events from Flutter. So this PR may not have much impact on RustDesk.

It's for other people using this library.