messager.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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/>.
 *
 *
 * Based on the original sources
 *   Faery Tale II -- The Halls of the Dead
 *   (c) 1993-1996 The Wyrmkeep Entertainment Co.
 */
 
#ifndef SAGA2_MESSAGER_H
#define SAGA2_MESSAGER_H
 
namespace Saga2 {
 
class gDisplayPort;
 
// max filename length
#define MAX_LOG_NAME_LENGTH 260
 
/****** messager.cpp/Messager [class] *******************************
*
*   NAME
*       Messager [class] -- classes for handling text messages
*
*   FUNCTION
*       The Messager classes are intended to handle text messages
*       generated by the program. Debugging text, status lines,
*       warning and error messages, and log files are some of the
*       implementations of these classes.
*
*
*
*
*   SEE ALSO
*       gError [class]
*
*******************************************************************/
 
//-------------------------------------------------------------------
// This is the base messager class
//   Note the constructor which takes a string argument. Most of the
//     Messager classes can be enabled based on the value of an
//     entry in the INI file.
//   Carriage returns are automatically appended to lines that don't
//     already have them.
 
class Messager {
protected:
    bool _enabled;
    virtual int dumpit(char *, size_t) = 0;
 
public:
    Messager() {
        _enabled = true;
    }
    Messager(const char *entry) {
        _enabled = true;
    }
    virtual ~Messager() {}
 
    size_t operator()(const char *format, ...);
    size_t va(const char *format, va_list argptr);
 
    void enable() {
        _enabled = true;
    }
    void disable() {
        _enabled = false;
    }
    bool active() {
        return _enabled;
    }
};
 
typedef Messager *pMessager;
 
//-------------------------------------------------------------------
// This messager writes text on a gDisplayPort (usually mainPort).
//   If you have seen the debugging lines in FTA2, this class acts
//   like a single one of those lines. Generally you will have several
//   of these. By default the lines will be in the lower right corner,
//   but you can specify any location you like. The positions of
//   multiple lines are automatically accounted for.
 
class StatusLineMessager : public Messager {
private:
    int _line;
    int32 _atX, _atY, _atW;
    int16 _atColor;
    gDisplayPort *_textPort;
 
protected:
    int dumpit(char *s, size_t size) ;
 
public:
    StatusLineMessager(int line, gDisplayPort *mp, int32 x = -1, int32 y = -1, int32 w = -1, int16 color = -1);
    StatusLineMessager(const char *entry, int line, gDisplayPort *mp, int32 x = -1, int32 y = -1, int32 w = -1, int16 color = -1);
    ~StatusLineMessager();
};
 
 
} // end of namespace Saga2
 
#endif