Switch to c++

include/ui.h

@@ -0,0 +1,106 @@
+#pragma once
+#include <atomic>
+#include <cstdint>
+#include <mutex>
+#include <string.h>
+#include <string>
+#include <sys/ioctl.h>
+#include <termios.h>
+#include <unistd.h>
+#include <vector>
+
+#define KEY_CHAR 0
+#define KEY_SPECIAL 1
+#define KEY_MOUSE 2
+#define KEY_NONE 3
+
+#define KEY_UP 0
+#define KEY_DOWN 1
+#define KEY_LEFT 2
+#define KEY_RIGHT 3
+#define KEY_DELETE 4
+
+#define KEY_ESC '\x1b'
+
+#define PRESS 0
+#define RELEASE 1
+#define DRAG 2
+#define SCROLL 3
+
+#define LEFT_BTN 0
+#define MIDDLE_BTN 1
+#define RIGHT_BTN 2
+#define SCROLL_BTN 3
+#define NONE_BTN 4
+
+#define SCROLL_UP 0
+#define SCROLL_DOWN 1
+#define SCROLL_LEFT 2
+#define SCROLL_RIGHT 3
+
+#define ALT 1
+#define CNTRL 2
+#define CNTRL_ALT 3
+#define SHIFT 4
+
+const char VS16_BYTE_A = '\xEF';
+const char VS16_BYTE_B = '\xB8';
+const char VS16_BYTE_C = '\x8F';
+
+enum CellFlags : uint8_t {
+  CF_NONE = 0,
+  CF_ITALIC = 1 << 0,
+  CF_BOLD = 1 << 1,
+  CF_UNDERLINE = 1 << 2,
+};
+
+struct ScreenCell {
+  std::string utf8 = std::string(""); // empty => no content
+  uint32_t fg = 0;
+  uint32_t bg = 0;
+  uint8_t flags = CF_NONE;
+};
+
+struct Coord {
+  uint32_t row;
+  uint32_t col;
+};
+
+struct KeyEvent {
+  uint8_t key_type;
+
+  char c;
+
+  uint8_t special_key;
+  uint8_t special_modifier;
+
+  uint8_t mouse_x;
+  uint8_t mouse_y;
+  uint8_t mouse_button;
+  uint8_t mouse_state;
+  uint8_t mouse_direction;
+  uint8_t mouse_modifier;
+};
+
+extern uint32_t rows, cols;
+extern std::vector<ScreenCell> screen; // size rows*cols
+extern std::vector<ScreenCell> old_screen;
+extern std::mutex screen_mutex;
+extern std::atomic<bool> running;
+
+void get_terminal_size();
+void die(const char *s);
+void enable_raw_mode();
+void disable_raw_mode();
+Coord start_screen();
+void end_screen();
+void update(uint32_t row, uint32_t col, const char *utf8, uint32_t fg,
+            uint32_t bg, uint8_t flags);
+void set_cursor(int row, int col, int show_cursor_param);
+void render();
+Coord get_size();
+
+int read_input(char *buf, size_t buflen);
+KeyEvent read_key();
+
+int display_width(const char *str);