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#include "cru/platform/gui/xcb/UiApplication.h"
#include "cru/base/Base.h"
#include "cru/base/Guard.h"
#include "cru/platform/graphics/cairo/CairoGraphicsFactory.h"
#include "cru/platform/gui/Window.h"
#include "cru/platform/gui/xcb/Cursor.h"
#include "cru/platform/gui/xcb/Window.h"
#include <poll.h>
#include <xcb/xcb.h>
#include <algorithm>
namespace cru::platform::gui::xcb {
XcbUiApplication::XcbUiApplication(
graphics::cairo::CairoGraphicsFactory *cairo_factory) {
release_cairo_factory_ = false;
if (cairo_factory == nullptr) {
cairo_factory = new graphics::cairo::CairoGraphicsFactory();
release_cairo_factory_ = true;
}
cairo_factory_ = cairo_factory;
is_quit_on_all_window_closed_ = false;
int screen_num;
xcb_connection_t *connection = xcb_connect(NULL, &screen_num);
xcb_connection_ = connection;
this->CheckXcbConnectionError();
event_loop_.SetPoll(xcb_get_file_descriptor(connection), POLLIN,
[this](auto) { HandleXEvents(); });
const xcb_setup_t *setup = xcb_get_setup(connection);
xcb_screen_iterator_t iter = xcb_setup_roots_iterator(setup);
this->screen_ = iter.data;
cursor_manager_ = new XcbCursorManager(this);
}
XcbUiApplication::~XcbUiApplication() {
delete cursor_manager_;
xcb_disconnect(this->xcb_connection_);
if (release_cairo_factory_) {
delete cairo_factory_;
}
}
graphics::cairo::CairoGraphicsFactory *XcbUiApplication::GetCairoFactory() {
return cairo_factory_;
}
void XcbUiApplication::CheckXcbConnectionError() {
if (xcb_connection_has_error(this->xcb_connection_)) {
throw XcbException("xcb_connection_has_error returned non-zero.");
}
}
xcb_connection_t *XcbUiApplication::GetXcbConnection() {
return xcb_connection_;
}
void XcbUiApplication::XcbFlush() { xcb_flush(xcb_connection_); }
xcb_screen_t *XcbUiApplication::GetFirstXcbScreen() { return screen_; }
xcb_atom_t XcbUiApplication::GetOrCreateXcbAtom(std::string name) {
auto iter = xcb_atom_.find(name);
if (iter != xcb_atom_.cend()) {
return iter->second;
}
auto cookie =
xcb_intern_atom(xcb_connection_, false, name.size(), name.data());
auto reply =
FreeLater(xcb_intern_atom_reply(xcb_connection_, cookie, nullptr));
auto atom = reply->atom;
xcb_atom_.emplace(std::move(name), atom);
return atom;
}
int XcbUiApplication::Run() {
auto exit_code = event_loop_.Run();
for (const auto &handler : this->quit_handlers_) {
handler();
}
return exit_code;
}
void XcbUiApplication::RequestQuit(int quit_code) {
event_loop_.RequestQuit(quit_code);
}
void XcbUiApplication::AddOnQuitHandler(std::function<void()> handler) {
this->quit_handlers_.push_back(std::move(handler));
}
bool XcbUiApplication::IsQuitOnAllWindowClosed() {
return is_quit_on_all_window_closed_;
}
void XcbUiApplication::SetQuitOnAllWindowClosed(
bool quit_on_all_window_closed) {
is_quit_on_all_window_closed_ = quit_on_all_window_closed;
}
long long XcbUiApplication::SetImmediate(std::function<void()> action) {
return event_loop_.SetImmediate(std::move(action));
}
long long XcbUiApplication::SetTimeout(std::chrono::milliseconds milliseconds,
std::function<void()> action) {
return event_loop_.SetTimeout(std::move(action), std::move(milliseconds));
}
long long XcbUiApplication::SetInterval(std::chrono::milliseconds milliseconds,
std::function<void()> action) {
return event_loop_.SetInterval(std::move(action), std::move(milliseconds));
}
void XcbUiApplication::CancelTimer(long long id) {
return event_loop_.CancelTimer(static_cast<int>(id));
}
void XcbUiApplication::HandleXEvents() {
xcb_generic_event_t *event;
while ((event = xcb_poll_for_event(xcb_connection_))) {
auto event_xcb_window = XcbWindow::GetEventWindow(event);
for (auto window : windows_) {
if (window->GetXcbWindow() == event_xcb_window) {
window->HandleEvent(event);
break;
}
}
::free(event);
}
}
std::vector<INativeWindow *> XcbUiApplication::GetAllWindow() {
std::vector<INativeWindow *> windows(windows_.size());
std::ranges::copy(windows_, windows.begin());
return windows;
}
INativeWindow *XcbUiApplication::CreateWindow() { return new XcbWindow(this); }
cru::platform::graphics::IGraphicsFactory *
XcbUiApplication::GetGraphicsFactory() {
return cairo_factory_;
}
ICursorManager *XcbUiApplication::GetCursorManager() { return cursor_manager_; }
IClipboard *XcbUiApplication::GetClipboard() { NotImplemented(); }
IMenu *XcbUiApplication::GetApplicationMenu() { return nullptr; }
void XcbUiApplication::RegisterWindow(XcbWindow *window) {
windows_.push_back(window);
}
void XcbUiApplication::UnregisterWindow(XcbWindow *window) {
std::erase(windows_, window);
}
} // namespace cru::platform::gui::xcb
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