terminal.h

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#pragma once
 
#include <string>
#include "utils.h"
#include <string.h>
#include <termios.h>
#include "pos2d.h"
#include "keys.h"
#include "logger.h"
 
namespace teditor {
 
enum Func {
  Func_EnterCA,
  Func_ExitCA,
  Func_ShowCursor,
  Func_HideCursor,
  Func_ClearScreen,
  Func_Sgr0,
  Func_Underline,
  Func_Italic,
  Func_Bold,
  Func_Blink,
  Func_EnterKeypad,
  Func_ExitKeypad,
  Func_EnterMouse,
  Func_ExitMouse,
  Func_FuncsNum,
};
 
enum EventType {
  Event_Key = 1,
  Event_Resize,
  Event_Mouse,
  Event_None = 0
};
 
const char* func2terminfo(Func f);
 
 
class Terminal {
public:
  EventType type;
  MetaKey mk;
  Pos2d<uint16_t> loc;
 
  int getWinchFd(int idx) const { return winchFds[idx]; }
  int width() const { return tsize.x; }
  int height() const { return tsize.y; }
 
  void puts(const char* data, size_t len);
  void puts(const char* data) { puts(data, strlen(data)); }
  void puts(const std::string& data) { puts(data.c_str(), data.length()); }
  void puts(Func f) { puts(func(f)); }
  void flush();
  void updateTermSize();
  void reset();
  int waitAndFill(struct timeval* timeout);
  const std::string& getOldSeq() const { return oldSeq; }
  bool bufferResize() const { return buffResize; }
  void disableResize() { buffResize = false; }
  static Terminal& getInstance();
 
  static const int UndefinedSequence;
 
private:
  Strings funcs;
  std::string termName;
  std::string outbuff;
  std::string ttyFile;
  int inout;
  struct termios tios, origTios;
  Pos2di tsize;
  std::string seq, oldSeq;
  bool buffResize;
  int winchFds[2];
 
  static Terminal* inst;
  static const std::string EnterMouseSeq;
  static const std::string ExitMouseSeq;
  static const int BuffSize;
 
  enum ColorSupport {
    CS_None = 0,
    CS_256,
    CS_True
  };
 
  Terminal(const std::string& tty);
  ~Terminal();
  void setSignalHandler();
  void setupTios();
  ColorSupport colorSupported() const;
  const char* func(int id) const { return funcs[id].c_str(); }
  int readAndExtract();
  int decodeChar(key_t ch);
  int decodeEscSeq();
  int readKey();
 
  template <typename A, typename B> friend class SingletonHandler;
};
 
}; // end namespace teditor