mouse_dragged()

MAYAFLUX_API Vruta::Event MayaFlux::Kriya::mouse_dragged	(	std::shared_ptr< Core::Window >	window,
		IO::MouseButtons	button,
		std::function< void(double, double)>	callback
	)

Creates an Event coroutine that triggers on mouse drag with specific button.

Parameters

window	Window to listen to
button	Mouse button that must be held for drag
callback	Function to call on mouse drag with current position

Returns

Event coroutine that can be added to EventManager

Example:

auto task = mouse_dragged(window, IO::MouseButtons::Left,
    [](double x, double y) {
        // Handle mouse drag with left button at (x, y)
    });

Definition at line 196 of file InputEvents.cpp.

{
    auto& promise = co_await GetEventPromise {};
    auto& source = window->get_event_source();
 
    Vruta::WindowEventFilter filter;
    filter.event_type = Core::WindowEventType::MOUSE_MOTION;
 
    while (true) {
        if (promise.should_terminate)
            break;
 
        auto event = co_await WindowEventAwaiter(source, filter);
 
        if (!source.is_mouse_pressed(static_cast<int>(button)))
            continue;
 
        if (auto* pos = std::get_if<Core::WindowEvent::MousePosData>(&event.data))
            callback(pos->x, pos->y);
    }
}

References callback, MayaFlux::Vruta::WindowEventFilter::event_type, MayaFlux::Core::MOUSE_MOTION, and window.

Referenced by MayaFlux::Nexus::Wiring::finalise(), and MayaFlux::on_mouse_drag().

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