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#include "common.hh"
#include <iostream>
#include <string.h>
#include <thread>
#include <xcb/xcb_event.h>
#include <xcb/xcb_keysyms.h>
#include "animator.hh"
#include "args.hh"
#include "goma.hh"
#include "icecc.hh"
#include "io.hh"
#include "monmon.hh"
#include "poll_looper.hh"
#include "x.hh"
namespace {
struct XcbKeySymbolsDelete {
void operator()(xcb_key_symbols_t* ptr) const {
if (ptr) xcb_key_symbols_free(ptr);
}
};
struct XcbGenericEventDelete {
void operator()(xcb_generic_event_t* ptr) const {
free(ptr);
}
};
void xcb_event_loop(x::shared_connection const& conn,
std::shared_ptr<x::Atoms> const& atoms,
std::shared_ptr<MonMon> const& monmon) {
std::unique_ptr<xcb_key_symbols_t, XcbKeySymbolsDelete> syms;
syms.reset(xcb_key_symbols_alloc(conn.get()));
std::unique_ptr<xcb_generic_event_t, XcbGenericEventDelete> event;
auto const quit = atoms->get("__MONMON_QUIT");
auto const wm_protocols = atoms->get("WM_PROTOCOLS");
auto const wm_delete_window = atoms->get("WM_DELETE_WINDOW");
while (true) {
event.reset(xcb_wait_for_event(conn.get()));
if (!event) {
std::cerr << "fatal error: "
<< xcb_connection_has_error(conn.get()) << std::endl;
monmon->quit_from_xcb();
return;
}
if (event->response_type == 0) {
auto e = reinterpret_cast<xcb_generic_error_t*>(event.get());
#ifndef NDEBUG
std::cerr << "error: " << xcb_event_get_error_label(e->error_code)
<< std::endl;
#endif
continue;
}
switch (XCB_EVENT_RESPONSE_TYPE(event)) {
case XCB_EXPOSE: {
auto e = reinterpret_cast<xcb_expose_event_t*>(event.get());
if (monmon->match(e->window)) {
monmon->expose(e->x, e->y, e->width, e->height);
}
if (e->count != 0) continue; // Only flush for e->count == 0
break;
}
case XCB_KEY_PRESS: {
auto e = reinterpret_cast<xcb_key_press_event_t*>(event.get());
auto sym = xcb_key_press_lookup_keysym(syms.get(), e, 0);
switch (sym) {
case 'Q':
case 'q':
case 0xff1b: { // escape
if (monmon->match(e->event)) {
monmon->quit_from_xcb();
return;
}
break;
}
#if FAKE_MONITOR
case ' ':
if (monmon->match(e->event)) {
monmon->toggle_fakes();
}
break;
#endif
}
break;
}
case XCB_DESTROY_NOTIFY: {
auto e = reinterpret_cast<xcb_destroy_notify_event_t*>(event.get());
if (monmon->match(e->window)) {
monmon->quit_from_xcb();
return;
}
break;
}
case XCB_CONFIGURE_NOTIFY: {
auto e = reinterpret_cast<xcb_configure_notify_event_t*>(event.get());
if (XCB_EVENT_SENT(e) && monmon->match(e->window)) {
monmon->configure(e->x, e->y, e->width, e->height);
}
break;
}
case XCB_CLIENT_MESSAGE: {
auto e = reinterpret_cast<xcb_client_message_event_t*>(event.get());
if (e->format == 32
&& e->type == wm_protocols
&& e->data.data32[0] == wm_delete_window) {
if (monmon->match(e->window)) {
monmon->quit_from_xcb();
return;
}
} else if (e->format == 32 && e->type == quit) {
// Do not call quit_from_xcb() here, only reason to end up
// here is if main already called quit_from_main()
return;
}
break;
}
case XCB_MAPPING_NOTIFY: {
auto e = reinterpret_cast<xcb_mapping_notify_event_t*>(event.get());
xcb_refresh_keyboard_mapping(syms.get(), e);
break;
}
case XCB_REPARENT_NOTIFY: {
auto e = reinterpret_cast<xcb_reparent_notify_event_t*>(event.get());
if (monmon->match(e->window)) {
monmon->update_desktop_window();
}
break;
}
case XCB_PROPERTY_NOTIFY: {
auto e = reinterpret_cast<xcb_property_notify_event_t*>(event.get());
monmon->update_desktop_window(e->window, e->atom);
break;
}
}
xcb_flush(conn.get());
}
}
} // namespace
int main(int argc, char** argv) {
std::unique_ptr<Args> args(Args::create());
args->add("display", "HOST:VS", "connect to X server at [HOST]:[VS]");
args->add("no-render", "do not use render extension even if available");
args->add("titlebar", "create a normal window instead of the default without"
" titlebar (or other WM addons)");
args->add("black", "use black background instead of background pixmap");
args->add("help", "display this text and exit.");
args->add("network", "NETNAME",
"monitor NETNAME instead of default ICECREAM (icecc only)");
args->add("scheduler", "HOST",
"connect to scheduler at HOST instead of broadcasting"
" (icecc only)");
args->add("columns", "COLUMNS", "force columns to be COLUMNS instead of"
" calculated from window size (icecc only)");
args->add("goma", "start GOMA monitor instead of icecc");
args->add("goma_addr", "ADDR",
"address to connect to instead of default"
" http://localhost:8088 (goma only)");
if (!args->run(argc, argv)) {
std::cout << "Try `monmon --help` for usage." << std::endl;
return EXIT_FAILURE;
}
if (args->is_set("help")) {
std::cout << "Usage: `monmon [OPTIONS...]`\n"
<< "icecream (icecc) or goma monitor\n"
<< "\n";
args->print_help(std::cout);
return EXIT_FAILURE;
}
bool goma = args->is_set("goma");
unsigned columns = 0;
if (!goma) {
auto tmp = args->arg("columns", nullptr);
if (tmp) {
char* end = nullptr;
errno = 0;
columns = strtoul(tmp, &end, 10);
if (errno || columns == 0 || *end) {
std::cerr << "Invalid value for columns: '" << tmp << "'" << std::endl;
return EXIT_FAILURE;
}
}
}
int screen_index;
x::shared_connection conn(
xcb_connect(args->arg("display", nullptr), &screen_index));
if (xcb_connection_has_error(conn.get())) {
std::cerr << "Unable to connect to X server." << std::endl;
return EXIT_FAILURE;
}
x::prefetch_extensions(conn.get());
auto screen = x::get_screen(conn.get(), screen_index);
auto format = x::get_best_format(conn.get(), screen,
!args->is_set("no-render"));
if (!format.good()) {
std::cerr << "Unable to find a good X visual." << std::endl;
return EXIT_FAILURE;
}
std::shared_ptr<PollLooper> looper(PollLooper::create());
std::shared_ptr<x::Atoms> atoms(x::Atoms::create(conn));
atoms->preload("WM_DELETE_WINDOW");
atoms->preload("WM_PROTOCOLS");
atoms->preload("__MONMON_QUIT");
MonMon::preload(atoms.get());
std::shared_ptr<x::Ewmh> ewmh(x::Ewmh::create(conn, screen_index));
std::shared_ptr<MonMon> monmon;
if (goma) {
monmon = create_goma_monmon(looper);
} else {
monmon = create_icecc_monmon(looper, columns);
}
monmon->init(conn, screen, format, atoms, ewmh, 400, 400,
args->is_set("titlebar"), args->is_set("black"));
if (!monmon->connect(args.get()))
return EXIT_FAILURE;
std::thread xcb_thread(xcb_event_loop, conn, atoms, monmon);
conn.reset();
looper->run();
xcb_thread.join();
return EXIT_SUCCESS;
}
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