AstralZX
89cbf733b3
Wraps wlroots' C ABI behind owning types (Display, Backend, Compositor, Output, XdgShell/Toplevel, Seat/Cursor/Keyboard, Scene/Node/Tree) with wl_signal -> std::function callbacks. Links the scenefx effect engine and ships a wlr::fx animation helper. Includes a runnable tinywl-style compositor and a scene/blur demo. License: AGPL-3.0-only.
57 lines
1.2 KiB
C++
57 lines
1.2 KiB
C++
// SPDX-License-Identifier: AGPL-3.0-only
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#pragma once
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#include <functional>
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#include <utility>
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#include <wayland-server-core.h>
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namespace wlr {
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class SignalSink {
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public:
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SignalSink() = default;
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SignalSink(const SignalSink&) = delete;
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SignalSink& operator=(const SignalSink&) = delete;
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void connect(struct wl_signal* sig, std::function<void(void*)> fn) {
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if (m_listener && m_listener->attached)
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return;
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if (!m_listener)
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m_listener = new Listener;
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m_listener->attached = true;
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m_listener->fn = std::move(fn);
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m_listener->listener.notify = &SignalSink::trampoline;
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wl_signal_add(sig, &m_listener->listener);
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}
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void disconnect() {
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if (m_listener && m_listener->attached) {
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wl_list_remove(&m_listener->listener.link);
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m_listener->attached = false;
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}
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}
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~SignalSink() {
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disconnect();
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delete m_listener;
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}
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private:
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struct Listener {
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struct wl_listener listener{};
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std::function<void(void*)> fn;
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bool attached = false;
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};
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static void trampoline(struct wl_listener* l, void* data) {
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auto* self = wl_container_of(l, static_cast<Listener*>(nullptr), listener);
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if (self->fn)
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self->fn(data);
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}
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Listener* m_listener = nullptr;
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};
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}
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