gmain_dj.c

字体缩放显示

/*******************************************************************
 *
 *  gmain_dj.c   graphics utility main body, specific DJGPP version
 *
 *  This file defines a specific implementation of the generic
 *  graphics utility used by the FreeType test programs.  It is
 *  provided because the management of the video memory under DJGPP
 *  extender is rather specific...
 *
 *  Copyright 1996-2002 by Antoine Leca,
 *  David Turner, Robert Wilhelm, and Werner Lemberg.
 *
 *  This file is part of the FreeType project, and may only be used
 *  modified and distributed under the terms of the FreeType project
 *  license, LICENSE.TXT.  By continuing to use, modify or distribute
 *  this file you indicate that you have read the license and
 *  understand and accept it fully.
 *
 ******************************************************************/

#include "gdriver.h"
#include "gmain.h"

#undef __STRICT_ANSI__
#include <go32.h>

#ifndef FAILURE
#define FAILURE 0
#endif

#ifndef SUCCESS
#define SUCCESS 1
#endif

  char*  Vio;                   /* pointer to VRAM or display buffer */

  int    vio_ScanLineWidth;     /* scan line width in bytes */

  int    vio_Width;
  int    vio_Height;

  int    gcursor_x = 0;
  int    gcursor_y = 0;

  int    gwindow_width  = 0;
  int    gwindow_height = 0;

  unsigned char  gray_palette[5];


  typedef void  TFunction_Print_8x8_Char( int            x,
                                          int            y,
                                          unsigned char  c );

  TFunction_Print_8x8_Char*  Print_8x8_Char;

  /* font characters */

  unsigned char  font_8x8[2048] =
  {
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x7E, 0x81, 0xA5, 0x81, 0xBD, 0x99, 0x81, 0x7E,
    0x7E, 0xFF, 0xDB, 0xFF, 0xC3, 0xE7, 0xFF, 0x7E,
    0x6C, 0xFE, 0xFE, 0xFE, 0x7C, 0x38, 0x10, 0x00,
    0x10, 0x38, 0x7C, 0xFE, 0x7C, 0x38, 0x10, 0x00,
    0x38, 0x7C, 0x38, 0xFE, 0xFE, 0x92, 0x10, 0x7C,
    0x00, 0x10, 0x38, 0x7C, 0xFE, 0x7C, 0x38, 0x7C,
    0x00, 0x00, 0x18, 0x3C, 0x3C, 0x18, 0x00, 0x00,
    0xFF, 0xFF, 0xE7, 0xC3, 0xC3, 0xE7, 0xFF, 0xFF,
    0x00, 0x3C, 0x66, 0x42, 0x42, 0x66, 0x3C, 0x00,
    0xFF, 0xC3, 0x99, 0xBD, 0xBD, 0x99, 0xC3, 0xFF,
    0x0F, 0x07, 0x0F, 0x7D, 0xCC, 0xCC, 0xCC, 0x78,
    0x3C, 0x66, 0x66, 0x66, 0x3C, 0x18, 0x7E, 0x18,
    0x3F, 0x33, 0x3F, 0x30, 0x30, 0x70, 0xF0, 0xE0,
    0x7F, 0x63, 0x7F, 0x63, 0x63, 0x67, 0xE6, 0xC0,
    0x99, 0x5A, 0x3C, 0xE7, 0xE7, 0x3C, 0x5A, 0x99,
    0x80, 0xE0, 0xF8, 0xFE, 0xF8, 0xE0, 0x80, 0x00,
    0x02, 0x0E, 0x3E, 0xFE, 0x3E, 0x0E, 0x02, 0x00,
    0x18, 0x3C, 0x7E, 0x18, 0x18, 0x7E, 0x3C, 0x18,
    0x66, 0x66, 0x66, 0x66, 0x66, 0x00, 0x66, 0x00,
    0x7F, 0xDB, 0xDB, 0x7B, 0x1B, 0x1B, 0x1B, 0x00,
    0x3E, 0x63, 0x38, 0x6C, 0x6C, 0x38, 0x86, 0xFC,
    0x00, 0x00, 0x00, 0x00, 0x7E, 0x7E, 0x7E, 0x00,
    0x18, 0x3C, 0x7E, 0x18, 0x7E, 0x3C, 0x18, 0xFF,
    0x18, 0x3C, 0x7E, 0x18, 0x18, 0x18, 0x18, 0x00,
    0x18, 0x18, 0x18, 0x18, 0x7E, 0x3C, 0x18, 0x00,
    0x00, 0x18, 0x0C, 0xFE, 0x0C, 0x18, 0x00, 0x00,
    0x00, 0x30, 0x60, 0xFE, 0x60, 0x30, 0x00, 0x00,
    0x00, 0x00, 0xC0, 0xC0, 0xC0, 0xFE, 0x00, 0x00,
    0x00, 0x24, 0x66, 0xFF, 0x66, 0x24, 0x00, 0x00,
    0x00, 0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0x00, 0x00,
    0x00, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00,
    0x6C, 0x6C, 0x6C, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x6C, 0x6C, 0xFE, 0x6C, 0xFE, 0x6C, 0x6C, 0x00,
    0x18, 0x7E, 0xC0, 0x7C, 0x06, 0xFC, 0x18, 0x00,
    0x00, 0xC6, 0xCC, 0x18, 0x30, 0x66, 0xC6, 0x00,
    0x38, 0x6C, 0x38, 0x76, 0xDC, 0xCC, 0x76, 0x00,
    0x30, 0x30, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x18, 0x30, 0x60, 0x60, 0x60, 0x30, 0x18, 0x00,
    0x60, 0x30, 0x18, 0x18, 0x18, 0x30, 0x60, 0x00,
    0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00,
    0x00, 0x18, 0x18, 0x7E, 0x18, 0x18, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x30,
    0x00, 0x00, 0x00, 0x7E, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00,
    0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0x80, 0x00,
    0x7C, 0xCE, 0xDE, 0xF6, 0xE6, 0xC6, 0x7C, 0x00,
    0x30, 0x70, 0x30, 0x30, 0x30, 0x30, 0xFC, 0x00,
    0x78, 0xCC, 0x0C, 0x38, 0x60, 0xCC, 0xFC, 0x00,
    0x78, 0xCC, 0x0C, 0x38, 0x0C, 0xCC, 0x78, 0x00,
    0x1C, 0x3C, 0x6C, 0xCC, 0xFE, 0x0C, 0x1E, 0x00,
    0xFC, 0xC0, 0xF8, 0x0C, 0x0C, 0xCC, 0x78, 0x00,
    0x38, 0x60, 0xC0, 0xF8, 0xCC, 0xCC, 0x78, 0x00,
    0xFC, 0xCC, 0x0C, 0x18, 0x30, 0x30, 0x30, 0x00,
    0x78, 0xCC, 0xCC, 0x78, 0xCC, 0xCC, 0x78, 0x00,
    0x78, 0xCC, 0xCC, 0x7C, 0x0C, 0x18, 0x70, 0x00,
    0x00, 0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x00,
    0x00, 0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x30,
    0x18, 0x30, 0x60, 0xC0, 0x60, 0x30, 0x18, 0x00,
    0x00, 0x00, 0x7E, 0x00, 0x7E, 0x00, 0x00, 0x00,
    0x60, 0x30, 0x18, 0x0C, 0x18, 0x30, 0x60, 0x00,
    0x3C, 0x66, 0x0C, 0x18, 0x18, 0x00, 0x18, 0x00,
    0x7C, 0xC6, 0xDE, 0xDE, 0xDC, 0xC0, 0x7C, 0x00,
    0x30, 0x78, 0xCC, 0xCC, 0xFC, 0xCC, 0xCC, 0x00,
    0xFC, 0x66, 0x66, 0x7C, 0x66, 0x66, 0xFC, 0x00,
    0x3C, 0x66, 0xC0, 0xC0, 0xC0, 0x66, 0x3C, 0x00,
    0xF8, 0x6C, 0x66, 0x66, 0x66, 0x6C, 0xF8, 0x00,
    0xFE, 0x62, 0x68, 0x78, 0x68, 0x62, 0xFE, 0x00,
    0xFE, 0x62, 0x68, 0x78, 0x68, 0x60, 0xF0, 0x00,
    0x3C, 0x66, 0xC0, 0xC0, 0xCE, 0x66, 0x3A, 0x00,
    0xCC, 0xCC, 0xCC, 0xFC, 0xCC, 0xCC, 0xCC, 0x00,
    0x78, 0x30, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00,
    0x1E, 0x0C, 0x0C, 0x0C, 0xCC, 0xCC, 0x78, 0x00,
    0xE6, 0x66, 0x6C, 0x78, 0x6C, 0x66, 0xE6, 0x00,
    0xF0, 0x60, 0x60, 0x60, 0x62, 0x66, 0xFE, 0x00,
    0xC6, 0xEE, 0xFE, 0xFE, 0xD6, 0xC6, 0xC6, 0x00,
    0xC6, 0xE6, 0xF6, 0xDE, 0xCE, 0xC6, 0xC6, 0x00,
    0x38, 0x6C, 0xC6, 0xC6, 0xC6, 0x6C, 0x38, 0x00,
    0xFC, 0x66, 0x66, 0x7C, 0x60, 0x60, 0xF0, 0x00,
    0x7C, 0xC6, 0xC6, 0xC6, 0xD6, 0x7C, 0x0E, 0x00,
    0xFC, 0x66, 0x66, 0x7C, 0x6C, 0x66, 0xE6, 0x00,
    0x7C, 0xC6, 0xE0, 0x78, 0x0E, 0xC6, 0x7C, 0x00,
    0xFC, 0xB4, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00,
    0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xFC, 0x00,
    0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0x78, 0x30, 0x00,
    0xC6, 0xC6, 0xC6, 0xC6, 0xD6, 0xFE, 0x6C, 0x00,
    0xC6, 0xC6, 0x6C, 0x38, 0x6C, 0xC6, 0xC6, 0x00,
    0xCC, 0xCC, 0xCC, 0x78, 0x30, 0x30, 0x78, 0x00,
    0xFE, 0xC6, 0x8C, 0x18, 0x32, 0x66, 0xFE, 0x00,
    0x78, 0x60, 0x60, 0x60, 0x60, 0x60, 0x78, 0x00,
    0xC0, 0x60, 0x30, 0x18, 0x0C, 0x06, 0x02, 0x00,
    0x78, 0x18, 0x18, 0x18, 0x18, 0x18, 0x78, 0x00,
    0x10, 0x38, 0x6C, 0xC6, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
    0x30, 0x30, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00,
    0xE0, 0x60, 0x60, 0x7C, 0x66, 0x66, 0xDC, 0x00,
    0x00, 0x00, 0x78, 0xCC, 0xC0, 0xCC, 0x78, 0x00,
    0x1C, 0x0C, 0x0C, 0x7C, 0xCC, 0xCC, 0x76, 0x00,
    0x00, 0x00, 0x78, 0xCC, 0xFC, 0xC0, 0x78, 0x00,
    0x38, 0x6C, 0x64, 0xF0, 0x60, 0x60, 0xF0, 0x00,
    0x00, 0x00, 0x76, 0xCC, 0xCC, 0x7C, 0x0C, 0xF8,
    0xE0, 0x60, 0x6C, 0x76, 0x66, 0x66, 0xE6, 0x00,
    0x30, 0x00, 0x70, 0x30, 0x30, 0x30, 0x78, 0x00,
    0x0C, 0x00, 0x1C, 0x0C, 0x0C, 0xCC, 0xCC, 0x78,
    0xE0, 0x60, 0x66, 0x6C, 0x78, 0x6C, 0xE6, 0x00,
    0x70, 0x30, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00,
    0x00, 0x00, 0xCC, 0xFE, 0xFE, 0xD6, 0xD6, 0x00,
    0x00, 0x00, 0xB8, 0xCC, 0xCC, 0xCC, 0xCC, 0x00,
    0x00, 0x00, 0x78, 0xCC, 0xCC, 0xCC, 0x78, 0x00,
    0x00, 0x00, 0xDC, 0x66, 0x66, 0x7C, 0x60, 0xF0,
    0x00, 0x00, 0x76, 0xCC, 0xCC, 0x7C, 0x0C, 0x1E,
    0x00, 0x00, 0xDC, 0x76, 0x62, 0x60, 0xF0, 0x00,
    0x00, 0x00, 0x7C, 0xC0, 0x70, 0x1C, 0xF8, 0x00,
    0x10, 0x30, 0xFC, 0x30, 0x30, 0x34, 0x18, 0x00,
    0x00, 0x00, 0xCC, 0xCC, 0xCC, 0xCC, 0x76, 0x00,
    0x00, 0x00, 0xCC, 0xCC, 0xCC, 0x78, 0x30, 0x00,
    0x00, 0x00, 0xC6, 0xC6, 0xD6, 0xFE, 0x6C, 0x00,
    0x00, 0x00, 0xC6, 0x6C, 0x38, 0x6C, 0xC6, 0x00,
    0x00, 0x00, 0xCC, 0xCC, 0xCC, 0x7C, 0x0C, 0xF8,
    0x00, 0x00, 0xFC, 0x98, 0x30, 0x64, 0xFC, 0x00,
    0x1C, 0x30, 0x30, 0xE0, 0x30, 0x30, 0x1C, 0x00,
    0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00,
    0xE0, 0x30, 0x30, 0x1C, 0x30, 0x30, 0xE0, 0x00,
    0x76, 0xDC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x10, 0x38, 0x6C, 0xC6, 0xC6, 0xFE, 0x00,
    0x7C, 0xC6, 0xC0, 0xC6, 0x7C, 0x0C, 0x06, 0x7C,
    0x00, 0xCC, 0x00, 0xCC, 0xCC, 0xCC, 0x76, 0x00,
    0x1C, 0x00, 0x78, 0xCC, 0xFC, 0xC0, 0x78, 0x00,
    0x7E, 0x81, 0x3C, 0x06, 0x3E, 0x66, 0x3B, 0x00,
    0xCC, 0x00, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00,
    0xE0, 0x00, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00,
    0x30, 0x30, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00,
    0x00, 0x00, 0x7C, 0xC6, 0xC0, 0x78, 0x0C, 0x38,
    0x7E, 0x81, 0x3C, 0x66, 0x7E, 0x60, 0x3C, 0x00,
    0xCC, 0x00, 0x78, 0xCC, 0xFC, 0xC0, 0x78, 0x00,
    0xE0, 0x00, 0x78, 0xCC, 0xFC, 0xC0, 0x78, 0x00,
    0xCC, 0x00, 0x70, 0x30, 0x30, 0x30, 0x78, 0x00,
    0x7C, 0x82, 0x38, 0x18, 0x18, 0x18, 0x3C, 0x00,
    0xE0, 0x00, 0x70, 0x30, 0x30, 0x30, 0x78, 0x00,
    0xC6, 0x10, 0x7C, 0xC6, 0xFE, 0xC6, 0xC6, 0x00,
    0x30, 0x30, 0x00, 0x78, 0xCC, 0xFC, 0xCC, 0x00,
    0x1C, 0x00, 0xFC, 0x60, 0x78, 0x60, 0xFC, 0x00,
    0x00, 0x00, 0x7F, 0x0C, 0x7F, 0xCC, 0x7F, 0x00,
    0x3E, 0x6C, 0xCC, 0xFE, 0xCC, 0xCC, 0xCE, 0x00,
    0x78, 0x84, 0x00, 0x78, 0xCC, 0xCC, 0x78, 0x00,
    0x00, 0xCC, 0x00, 0x78, 0xCC, 0xCC, 0x78, 0x00,
    0x00, 0xE0, 0x00, 0x78, 0xCC, 0xCC, 0x78, 0x00,
    0x78, 0x84, 0x00, 0xCC, 0xCC, 0xCC, 0x76, 0x00,
    0x00, 0xE0, 0x00, 0xCC, 0xCC, 0xCC, 0x76, 0x00,
    0x00, 0xCC, 0x00, 0xCC, 0xCC, 0x7C, 0x0C, 0xF8,
    0xC3, 0x18, 0x3C, 0x66, 0x66, 0x3C, 0x18, 0x00,
    0xCC, 0x00, 0xCC, 0xCC, 0xCC, 0xCC, 0x78, 0x00,
    0x18, 0x18, 0x7E, 0xC0, 0xC0, 0x7E, 0x18, 0x18,
    0x38, 0x6C, 0x64, 0xF0, 0x60, 0xE6, 0xFC, 0x00,
    0xCC, 0xCC, 0x78, 0x30, 0xFC, 0x30, 0xFC, 0x30,
    0xF8, 0xCC, 0xCC, 0xFA, 0xC6, 0xCF, 0xC6, 0xC3,
    0x0E, 0x1B, 0x18, 0x3C, 0x18, 0x18, 0xD8, 0x70,
    0x1C, 0x00, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00,
    0x38, 0x00, 0x70, 0x30, 0x30, 0x30, 0x78, 0x00,
    0x00, 0x1C, 0x00, 0x78, 0xCC, 0xCC, 0x78, 0x00,
    0x00, 0x1C, 0x00, 0xCC, 0xCC, 0xCC, 0x76, 0x00,
    0x00, 0xF8, 0x00, 0xB8, 0xCC, 0xCC, 0xCC, 0x00,
    0xFC, 0x00, 0xCC, 0xEC, 0xFC, 0xDC, 0xCC, 0x00,
    0x3C, 0x6C, 0x6C, 0x3E, 0x00, 0x7E, 0x00, 0x00,
    0x38, 0x6C, 0x6C, 0x38, 0x00, 0x7C, 0x00, 0x00,
    0x18, 0x00, 0x18, 0x18, 0x30, 0x66, 0x3C, 0x00,
    0x00, 0x00, 0x00, 0xFC, 0xC0, 0xC0, 0x00, 0x00,
    0x00, 0x00, 0x00, 0xFC, 0x0C, 0x0C, 0x00, 0x00,
    0xC6, 0xCC, 0xD8, 0x36, 0x6B, 0xC2, 0x84, 0x0F,
    0xC3, 0xC6, 0xCC, 0xDB, 0x37, 0x6D, 0xCF, 0x03,
    0x18, 0x00, 0x18, 0x18, 0x3C, 0x3C, 0x18, 0x00,
    0x00, 0x33, 0x66, 0xCC, 0x66, 0x33, 0x00, 0x00,
    0x00, 0xCC, 0x66, 0x33, 0x66, 0xCC, 0x00, 0x00,