console.hpp

//  SuperTux - Console
//  Copyright (C) 2006 Christoph Sommer <christoph.sommer@2006.expires.deltadevelopment.de>
//
//  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 <http://www.gnu.org/licenses/>.

#ifndef HEADER_SUPERTUX_SUPERTUX_CONSOLE_HPP
#define HEADER_SUPERTUX_SUPERTUX_CONSOLE_HPP

#include <list>
#include <squirrel.h>
#include <sstream>
#include <vector>

#include "util/currenton.hpp"
#include "video/font_ptr.hpp"
#include "video/surface_ptr.hpp"

class Console;
class ConsoleStreamBuffer;
class DrawingContext;

class ConsoleBuffer final : public Currenton<ConsoleBuffer>
{
public:
  static std::ostream output; 
  static ConsoleStreamBuffer s_outputBuffer; 
public:
  std::list<std::string> m_lines; 
  Console* m_console;

public:
  ConsoleBuffer();

  void addLines(const std::string& s); 
  void addLine(const std::string& s); 
  void flush(ConsoleStreamBuffer& buffer); 
  void set_console(Console* console);

private:
  ConsoleBuffer(const ConsoleBuffer&) = delete;
  ConsoleBuffer& operator=(const ConsoleBuffer&) = delete;
};

class Console final : public Currenton<Console>
{
public:
  Console(ConsoleBuffer& buffer);
  ~Console();

  void on_buffer_change(int line_count);

  void input(char c); 
  void backspace(); 
  void eraseChar(); 
  void enter(); 
  void scroll(int offset); 
  void autocomplete(); 
  void show_history(int offset); 
  void move_cursor(int offset); 
  void draw(DrawingContext& context) const; 
  void update(float dt_sec);

  void show(); 
  void open(); 
  void hide(); 
  void toggle(); 
  bool hasFocus() const; 
private:
  ConsoleBuffer& m_buffer;

  std::string m_inputBuffer; 
  int m_inputBufferPosition; 
  std::list<std::string> m_history; 
  std::list<std::string>::iterator m_history_position; 
  SurfacePtr m_background; 
  SurfacePtr m_background2; 
  HSQUIRRELVM m_vm; 
  HSQOBJECT m_vm_object;

  int m_backgroundOffset; 
  float m_height; 
  float m_alpha;
  int m_offset; 
  bool m_focused; 
  FontPtr m_font;

  float m_stayOpen;

  void parse(const std::string& s); 
  void ready_vm();

  void execute_script(const std::string& s);

  bool consoleCommand(const std::string& command, const std::vector<std::string>& arguments); 
private:
  Console(const Console&) = delete;
  Console & operator=(const Console&) = delete;
};

class ConsoleStreamBuffer final : public std::stringbuf
{
public:
  virtual int sync() override
  {
    int result = std::stringbuf::sync();
    if (ConsoleBuffer::current())
      ConsoleBuffer::current()->flush(*this);
    return result;
  }
};

#endif

/* EOF */