key_step()

Context & MayaFlux::Portal::Forma::Context::key_step	(	uint32_t	id,
		std::shared_ptr< MappedState< float > >	state,
		IO::Keys	decrease,
		IO::Keys	increase,
		float	delta,
		float	clamp_min = 0.0F,
		float	clamp_max = 1.0F
	)

Attach key-delta handlers to a Mapped<float> element.

Binds key handlers that adjust the element's state by a delta on each press/hold. The element must be focused (via mouse click) for keys to fire.

Parameters

id	Element id.
state	MappedState to adjust.
decrease	Key that decreases the value.
increase	Key that increases the value.
delta	Step size per key event.
clamp_min	Minimum clamped value (default 0.0F).
clamp_max	Maximum clamped value (default 1.0F).

Returns

*this for chaining.

Definition at line 193 of file Context.cpp.

{
    on_held(id, decrease, [state, delta, clamp_min, clamp_max](uint32_t) {
        state->write(std::clamp(state->value - delta, clamp_min, clamp_max));
    });
 
    on_held(id, increase, [state, delta, clamp_min, clamp_max](uint32_t) {
        state->write(std::clamp(state->value + delta, clamp_min, clamp_max));
    });
 
    return *this;
}

References on_held().

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