#include <nxt/slot.hpp>
template <Layout L>
Slot class
A live hole in the layout tree.
Slot<L> satisfies the Layout concept by forwarding to whichever L value was most recently published into it. The slot is a shared handle: copies share the same cell, so the layout tree can copy a slot by value each frame while a coroutine elsewhere keeps publishing fresh layouts into the same cell.
Publishing is lock-free (atomic shared_ptr swap) and invokes an optional on-publish callback — typically UIRuntime::signal_damage.
Constructors, destructors, conversion operators
-
Slot(L initial,
std::
function<void()> on_publish = {}) explicit
Public functions
- auto height_hint() const → HeightHint
- void publish(L layout) const
- Replace the current layout. Thread-safe.
- void render(RasterView& raster, Size size) const
-
void set_on_publish(std::
function<void()> fn) const - auto width_hint() const → WidthHint
Function documentation
template <Layout L>
nxt::tui::Slot::Slot(L initial,
std::
Construct a slot showing initial. on_publish is invoked after every successful publish(); it is intended to wake the render loop (e.g. [&rt]{ rt.signal_damage(); }). It can also be set later via set_on_publish for cases where the runtime is not available at construction time.
template <Layout L>
void nxt::tui::Slot::set_on_publish(std::
Install or replace the on-publish callback. Not thread-safe; call before any coroutine starts publishing.