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/*
* Copyright 2026 Joel Klinghed
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef XCB_RESOURCE_HH
#define XCB_RESOURCE_HH
#include "xcb_connection.hh"
#include <memory>
#include <xcb/xproto.h>
namespace xcb {
namespace internal {
struct WndDeleter {
void operator()(xcb_connection_t* conn, xcb_window_t wnd) const {
xcb_destroy_window(conn, wnd);
}
};
struct GCDeleter {
void operator()(xcb_connection_t* conn, xcb_gcontext_t gc) const {
xcb_free_gc(conn, gc);
}
};
struct FontDeleter {
void operator()(xcb_connection_t* conn, xcb_font_t font) const {
xcb_close_font(conn, font);
}
};
} // namespace internal
template <typename T, typename Deleter>
class xcb_resource {
public:
explicit xcb_resource(shared_conn conn)
: conn_(conn), id_(xcb_generate_id(conn_.get())) {}
constexpr xcb_resource() : id_(XCB_NONE) {}
xcb_resource(xcb_resource const& res) = delete;
xcb_resource(xcb_resource&& res) : conn_(res.conn_), id_(res.release()) {}
~xcb_resource() { reset(); }
xcb_resource& operator=(xcb_resource const& res) = delete;
xcb_resource& operator=(xcb_resource&& res) {
reset();
conn_ = res.conn_;
id_ = res.release();
return *this;
}
T id() const { return id_; }
void reset() {
if (id_ == XCB_NONE)
return;
deleter_(conn_.get(), id_);
id_ = XCB_NONE;
}
T release() {
auto ret = id_;
id_ = XCB_NONE;
conn_.reset();
return ret;
}
private:
shared_conn conn_;
T id_;
Deleter const deleter_{};
};
typedef std::unique_ptr<xcb_resource<xcb_window_t, internal::WndDeleter>>
unique_wnd;
typedef std::shared_ptr<xcb_resource<xcb_window_t, internal::WndDeleter>>
shared_wnd;
unique_wnd make_unique_wnd(shared_conn conn);
shared_wnd make_shared_wnd(shared_conn conn);
typedef std::unique_ptr<xcb_resource<xcb_gcontext_t, internal::GCDeleter>>
unique_gc;
typedef std::shared_ptr<xcb_resource<xcb_gcontext_t, internal::GCDeleter>>
shared_gc;
unique_gc make_unique_gc(shared_conn conn);
shared_gc make_shared_gc(shared_conn conn);
typedef std::unique_ptr<xcb_resource<xcb_font_t, internal::FontDeleter>>
unique_font;
typedef std::shared_ptr<xcb_resource<xcb_font_t, internal::FontDeleter>>
shared_font;
unique_font make_unique_font(shared_conn conn);
shared_font make_shared_font(shared_conn conn);
} // namespace xcb
#endif // XCB_RESOURCE_HH
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