git.sur5r.net Git - cc65/blob - include/tgi/tgi-kernel.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 tgi-kernel.h                              */
   4 /*                                                                           */
   5 /*                             TGI kernel interface                          */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2002-2012, Ullrich von Bassewitz                                      */
  10 /*                Roemerstrasse 52                                           */
  11 /*                D-70794 Filderstadt                                        */
  12 /* EMail:         uz@cc65.org                                                */
  13 /*                                                                           */
  14 /*                                                                           */
  15 /* This software is provided 'as-is', without any expressed or implied       */
  16 /* warranty.  In no event will the authors be held liable for any damages    */
  17 /* arising from the use of this software.                                    */
  18 /*                                                                           */
  19 /* Permission is granted to anyone to use this software for any purpose,     */
  20 /* including commercial applications, and to alter it and redistribute it    */
  21 /* freely, subject to the following restrictions:                            */
  22 /*                                                                           */
  23 /* 1. The origin of this software must not be misrepresented; you must not   */
  24 /*    claim that you wrote the original software. If you use this software   */
  25 /*    in a product, an acknowledgment in the product documentation would be  */
  26 /*    appreciated but is not required.                                       */
  27 /* 2. Altered source versions must be plainly marked as such, and must not   */
  28 /*    be misrepresented as being the original software.                      */
  29 /* 3. This notice may not be removed or altered from any source              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 #ifndef _TGI_KERNEL_H
  37 #define _TGI_KERNEL_H
  38
  39
  40
  41 /*****************************************************************************/
  42 /*                                   Data                                    */
  43 /*****************************************************************************/
  44
  45
  46
  47 /* TGI kernel variables */
  48 extern void*         tgi_drv;           /* Pointer to driver */
  49 extern unsigned char tgi_error;         /* Last error code */
  50 extern unsigned char tgi_gmode;         /* Flag: Graphics mode active */
  51 extern int           tgi_curx;          /* Current drawing cursor X */
  52 extern int           tgi_cury;          /* Current drawing cursor Y */
  53 extern unsigned char tgi_color;         /* Current drawing color */
  54 extern unsigned char tgi_font;          /* Current font type */
  55 extern unsigned      tgi_xres;          /* X resolution of the current mode */
  56 extern unsigned      tgi_yres;          /* Y resolution of the current mode */
  57 extern unsigned char tgi_colorcount;    /* Number of available colors */
  58 extern unsigned char tgi_pagecount;     /* Number of available screens */
  59 extern unsigned char tgi_fontwidth;     /* System font width in pixels */
  60 extern unsigned char tgi_fontheight;    /* System font height in pixels */
  61 extern unsigned      tgi_aspectratio;   /* Aspect ratio as fixed point 8.8 */
  62 extern unsigned char tgi_flags;         /* TGI driver flags */
  63 extern unsigned      tgi_textscalew[2]; /* Vector/bitmap font scale 8.8 */
  64 extern unsigned      tgi_textscaleh[2]; /* Vector/bitmap font scale 8.8 */
  65 extern unsigned      tgi_charwidth;     /* Width of scaled bitmap font */
  66 extern unsigned      tgi_charheight;    /* Height of scaled bitmap font */
  67
  68
  69
  70 /*****************************************************************************/
  71 /*                                     Code                                  */
  72 /*****************************************************************************/
  73
  74
  75
  76 int __fastcall__ tgi_imulround (int rhs, int lhs);
  77 /* Helper function for functions using sine/cosine: Multiply two values, one
  78  * being an 8.8 fixed point one, and return the rounded and scaled result.
  79  */
  80
  81
  82
  83 /* End of tgi-kernel.h */
  84 #endif
  85
  86
  87
  88