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// Display images inside a terminal
// Copyright (C) 2023 JustKidding
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
#ifndef X11_CANVAS_H
#define X11_CANVAS_H
#include "canvas.hpp"
#include "image.hpp"
#include "window.hpp"
#include "dimensions.hpp"
#include "util/x11.hpp"
#include <memory>
#include <unordered_map>
#include <unordered_set>
#include <thread>
#include <mutex>
#include <xcb/xcb.h>
#include <spdlog/spdlog.h>
#ifdef ENABLE_XCB_ERRORS
# include <xcb/xcb_errors.h>
#endif
#ifdef ENABLE_OPENGL
# include "util/egl.hpp"
#endif
class Flags;
class X11Canvas : public Canvas
{
public:
explicit X11Canvas();
~X11Canvas() override;
void add_image(const std::string& identifier, std::unique_ptr<Image> new_image) override;
void remove_image(const std::string& identifier) override;
void hide() override;
void show() override;
private:
xcb_connection_t *connection;
xcb_screen_t *screen;
#ifdef ENABLE_XCB_ERRORS
xcb_errors_context_t *err_ctx;
#endif
std::unique_ptr<X11Util> xutil;
// map for event handler
std::unordered_map<xcb_window_t, std::shared_ptr<Window>> windows;
// windows per image
std::unordered_map<std::string,
std::unordered_map<xcb_window_t, std::shared_ptr<Window>>> image_windows;
std::unordered_map<std::string, std::shared_ptr<Image>> images;
std::unordered_map<std::string, std::jthread> draw_threads;
std::thread event_handler;
std::mutex windows_mutex;
std::shared_ptr<spdlog::logger> logger;
std::shared_ptr<Flags> flags;
#ifdef ENABLE_OPENGL
std::unique_ptr<EGLUtil<xcb_connection_t, xcb_window_t>> egl;
bool egl_available = true;
#endif
void draw(const std::string& identifier);
void handle_events();
void get_tmux_window_ids(std::unordered_set<xcb_window_t>& windows);
void print_xcb_error(const xcb_generic_error_t* err);
};
#endif
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