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polybar/include/x11/connection.hpp
2016-12-21 23:22:02 +01:00

95 lines
2.6 KiB
C++

#pragma once
#include <X11/X.h>
#include <X11/Xlib-xcb.h>
#include <xcb/xcb.h>
#include "common.hpp"
#include "utils/file.hpp"
#include "x11/extensions/all.hpp"
#include "x11/registry.hpp"
#include "x11/types.hpp"
POLYBAR_NS
using xpp_connection = xpp::connection<XPP_EXTENSION_LIST>;
class connection : public xpp_connection {
public:
using make_type = connection&;
static make_type make(xcb_connection_t* conn = nullptr);
explicit connection(xcb_connection_t* conn) : xpp_connection(conn) {}
explicit connection(xcb_connection_t* conn, int connection_fd)
: xpp_connection(conn), m_connection_fd(file_util::make_file_descriptor(connection_fd)) {}
connection& operator=(const connection&) {
return *this;
}
void preload_atoms();
void query_extensions();
string id(xcb_window_t w) const;
xcb_screen_t* screen(bool realloc = false);
void ensure_event_mask(xcb_window_t win, uint32_t event);
void clear_event_mask(xcb_window_t win);
shared_ptr<xcb_client_message_event_t> make_client_message(xcb_atom_t type, xcb_window_t target) const;
void send_client_message(const shared_ptr<xcb_client_message_event_t>& message, xcb_window_t target,
uint32_t event_mask = 0xFFFFFF, bool propagate = false) const;
xcb_visualtype_t* visual_type(xcb_screen_t* screen, int match_depth = 32);
static string error_str(int error_code);
void dispatch_event(const shared_ptr<xcb_generic_event_t>& evt) const;
template <typename Event, uint32_t ResponseType>
void wait_for_response(function<bool(const Event*)> check_event) {
shared_ptr<xcb_generic_event_t> evt{};
while (!connection_has_error()) {
fd_set fds;
FD_ZERO(&fds);
FD_SET(*m_connection_fd, &fds);
if (!select(*m_connection_fd + 1, &fds, nullptr, nullptr, nullptr)) {
continue;
} else if ((evt = shared_ptr<xcb_generic_event_t>(xcb_poll_for_event(*this), free)) == nullptr) {
continue;
} else if (evt->response_type != ResponseType) {
continue;
} else if (check_event(reinterpret_cast<const Event*>(&*evt))) {
break;
}
}
}
/**
* Attach sink to the registry
*/
template <typename Sink>
void attach_sink(Sink&& sink, registry::priority prio = 0) {
m_registry.attach(prio, forward<Sink>(sink));
}
/**
* Detach sink from the registry
*/
template <typename Sink>
void detach_sink(Sink&& sink, registry::priority prio = 0) {
m_registry.detach(prio, forward<Sink>(sink));
}
protected:
registry m_registry{*this};
xcb_screen_t* m_screen{nullptr};
shared_ptr<file_descriptor> m_connection_fd;
};
POLYBAR_NS_END