graphics

This is the graphics.h header file which contains all the graphics functions and their implementations. It is quite nice to have a look at header files just to know more about functions and their parameters. Also it tells about different structures, enums defined in the file for specific purpose.

[code=’c’]

/*******************************************************
* MYCPLUS Sample Code – http://www.mycplus.com *
* *
* This code is made available as a service to our *
* visitors and is provided strictly for the *
* purpose of illustration. *
* *
* Please direct all inquiries to saqib at mycplus.com *
*******************************************************/

#if !defined(__GRAPHICS_H)
#define __GRAPHICS_H

#if !defined( __DEFS_H )
#include <_defs.h>
#endif

enum graphics_errors { /* graphresult error return codes */
grOk = 0,
grNoInitGraph = -1,
grNotDetected = -2,
grFileNotFound = -3,
grInvalidDriver = -4,
grNoLoadMem = -5,
grNoScanMem = -6,
grNoFloodMem = -7,
grFontNotFound = -8,
grNoFontMem = -9,
grInvalidMode = -10,
grError = -11, /* generic error */
grIOerror = -12,
grInvalidFont = -13,
grInvalidFontNum = -14,
grInvalidVersion = -18
};

enum graphics_drivers { /* define graphics drivers */
DETECT, /* requests autodetection */
CGA, MCGA, EGA, EGA64, EGAMONO, IBM8514, /* 1 – 6 */
HERCMONO, ATT400, VGA, PC3270, /* 7 – 10 */
CURRENT_DRIVER = -1
};

enum graphics_modes { /* graphics modes for each driver */
CGAC0 = 0, /* 320200 palette 0; 1 page */
CGAC1 = 1, /* 320200 palette 1; 1 page */
CGAC2 = 2, /* 320200 palette 2: 1 page */
CGAC3 = 3, /* 320200 palette 3; 1 page */
CGAHI = 4, /* 640200 1 page */
MCGAC0 = 0, /* 320200 palette 0; 1 page */
MCGAC1 = 1, /* 320200 palette 1; 1 page */
MCGAC2 = 2, /* 320200 palette 2; 1 page */
MCGAC3 = 3, /* 320200 palette 3; 1 page */
MCGAMED = 4, /* 640200 1 page */
MCGAHI = 5, /* 640480 1 page */
EGALO = 0, /* 640200 16 color 4 pages */
EGAHI = 1, /* 640350 16 color 2 pages */
EGA64LO = 0, /* 640200 16 color 1 page */
EGA64HI = 1, /* 640350 4 color 1 page */
EGAMONOHI = 0, /* 640350 64K on card, 1 page – 256K on card, 4 pages */
HERCMONOHI = 0, /* 720348 2 pages */
ATT400C0 = 0, /* 320200 palette 0; 1 page */
ATT400C1 = 1, /* 320200 palette 1; 1 page */
ATT400C2 = 2, /* 320200 palette 2; 1 page */
ATT400C3 = 3, /* 320200 palette 3; 1 page */
ATT400MED = 4, /* 640200 1 page */
ATT400HI = 5, /* 640400 1 page */
VGALO = 0, /* 640200 16 color 4 pages */
VGAMED = 1, /* 640350 16 color 2 pages */
VGAHI = 2, /* 640480 16 color 1 page */
PC3270HI = 0, /* 720350 1 page */
IBM8514LO = 0, /* 640480 256 colors */
IBM8514HI = 1 /*1024768 256 colors */
};

/* Colors for setpalette and setallpalette */

#if !defined(__COLORS)
#define __COLORS

enum COLORS {
BLACK, /* dark colors */
BLUE,
GREEN,
CYAN,
RED,
MAGENTA,
BROWN,
LIGHTGRAY,
DARKGRAY, /* light colors */
LIGHTBLUE,
LIGHTGREEN,
LIGHTCYAN,
LIGHTRED,
LIGHTMAGENTA,
YELLOW,
WHITE
};
#endif

enum CGA_COLORS {
CGA_LIGHTGREEN = 1, /* Palette C0 Color Names */
CGA_LIGHTRED = 2,
CGA_YELLOW = 3,

CGA_LIGHTCYAN = 1, /* Palette C1 Color Names */
CGA_LIGHTMAGENTA = 2,
CGA_WHITE = 3,

CGA_GREEN = 1, /* Palette C2 Color Names */
CGA_RED = 2,
CGA_BROWN = 3,

CGA_CYAN = 1, /* Palette C3 Color Names */
CGA_MAGENTA = 2,
CGA_LIGHTGRAY = 3
};

enum EGA_COLORS {
EGA_BLACK = 0, /* dark colors */
EGA_BLUE = 1,
EGA_GREEN = 2,
EGA_CYAN = 3,
EGA_RED = 4,
EGA_MAGENTA = 5,
EGA_BROWN = 20,
EGA_LIGHTGRAY = 7,
EGA_DARKGRAY = 56, /* light colors */
EGA_LIGHTBLUE = 57,
EGA_LIGHTGREEN = 58,
EGA_LIGHTCYAN = 59,
EGA_LIGHTRED = 60,
EGA_LIGHTMAGENTA = 61,
EGA_YELLOW = 62,
EGA_WHITE = 63
};

enum line_styles { /* Line styles for get/setlinestyle */
SOLID_LINE = 0,
DOTTED_LINE = 1,
CENTER_LINE = 2,
DASHED_LINE = 3,
USERBIT_LINE = 4, /* User defined line style */
};

enum line_widths { /* Line widths for get/setlinestyle */
NORM_WIDTH = 1,
THICK_WIDTH = 3,
};

enum font_names {
DEFAULT_FONT = 0, /* 88 bit mapped font */
TRIPLEX_FONT = 1, /* “Stroked” fonts */
SMALL_FONT = 2,
SANS_SERIF_FONT = 3,
GOTHIC_FONT = 4,
SCRIPT_FONT = 5,
SIMPLEX_FONT = 6,
TRIPLEX_SCR_FONT = 7,
COMPLEX_FONT = 8,
EUROPEAN_FONT = 9,
BOLD_FONT = 10
};

#define HORIZ_DIR 0 /* left to right */
#define VERT_DIR 1 /* bottom to top */

#define USER_CHAR_SIZE 0 /* user-defined char size */

enum fill_patterns { /* Fill patterns for get/setfillstyle */
EMPTY_FILL, /* fills area in background color */
SOLID_FILL, /* fills area in solid fill color */
LINE_FILL, /* — fill */
LTSLASH_FILL, /* /// fill */
SLASH_FILL, /* /// fill with thick lines */
BKSLASH_FILL, /* \\\ fill with thick lines */
LTBKSLASH_FILL, /* \\\ fill */
HATCH_FILL, /* light hatch fill */
XHATCH_FILL, /* heavy cross hatch fill */
INTERLEAVE_FILL, /* interleaving line fill */
WIDE_DOT_FILL, /* Widely spaced dot fill */
CLOSE_DOT_FILL, /* Closely spaced dot fill */
USER_FILL /* user defined fill */
};

enum putimage_ops { /* BitBlt operators for putimage */
COPY_PUT, /* MOV */
XOR_PUT, /* XOR */
OR_PUT, /* OR */
AND_PUT, /* AND */
NOT_PUT /* NOT */
};

enum text_just { /* Horizontal and vertical justification
for settextjustify */
LEFT_TEXT = 0,
CENTER_TEXT = 1,
RIGHT_TEXT = 2,

BOTTOM_TEXT = 0,
/* CENTER_TEXT = 1, already defined above */
TOP_TEXT = 2
};

#define MAXCOLORS 15

struct palettetype {
unsigned char size;
signed char colors[MAXCOLORS+1];
};

struct linesettingstype {
int linestyle;
unsigned upattern;
int thickness;
};

struct textsettingstype {
int font;
int direction;
int charsize;
int horiz;
int vert;
};

struct fillsettingstype {
int pattern;
int color;
};

struct pointtype {
int x, y;
};

struct viewporttype {
int left, top, right, bottom;
int clip;
};

struct arccoordstype {
int x, y;
int xstart, ystart, xend, yend;
};

#ifdef __cplusplus
extern “C” {
#endif
void far _Cdecl arc(int __x, int __y, int __stangle, int __endangle,
int __radius);
void far _Cdecl bar(int __left, int __top, int __right, int __bottom);
void far _Cdecl bar3d(int __left, int __top, int __right, int __bottom,
int __depth, int __topflag);
void far _Cdecl circle(int __x, int __y, int __radius);
void far _Cdecl cleardevice(void);
void far _Cdecl clearviewport(void);
void far _Cdecl closegraph(void);
void far _Cdecl detectgraph(int far *__graphdriver,int far *__graphmode);
void far _Cdecl drawpoly(int __numpoints, const int far *__polypoints);
void far _Cdecl ellipse(int __x, int __y, int __stangle, int __endangle,
int __xradius, int __yradius);
void far _Cdecl fillellipse( int __x, int __y, int __xradius, int __yradius );
void far _Cdecl fillpoly(int __numpoints, const int far *__polypoints);
void far _Cdecl floodfill(int __x, int __y, int __border);
void far _Cdecl getarccoords(struct arccoordstype far *__arccoords);
void far _Cdecl getaspectratio(int far *__xasp, int far *__yasp);
int far _Cdecl getbkcolor(void);
int far _Cdecl getcolor(void);
struct palettetype far * far _Cdecl getdefaultpalette( void );
char * far _Cdecl getdrivername( void );
void far _Cdecl getfillpattern(char far *__pattern);
void far _Cdecl getfillsettings(struct fillsettingstype far *__fillinfo);
int far _Cdecl getgraphmode(void);
void far _Cdecl getimage(int __left, int __top, int __right, int __bottom,
void far *__bitmap);
void far _Cdecl getlinesettings(struct linesettingstype far *__lineinfo);
int far _Cdecl getmaxcolor(void);
int far _Cdecl getmaxmode(void);
int far _Cdecl getmaxx(void);
int far _Cdecl getmaxy(void);
char * far _Cdecl getmodename( int __mode_number );
void far _Cdecl getmoderange(int __graphdriver, int far *__lomode,
int far *__himode);
unsigned far _Cdecl getpixel(int __x, int __y);
void far _Cdecl getpalette(struct palettetype far *__palette);
int far _Cdecl getpalettesize( void );
void far _Cdecl gettextsettings(struct textsettingstype far *__texttypeinfo);
void far _Cdecl getviewsettings(struct viewporttype far *__viewport);
int far _Cdecl getx(void);
int far _Cdecl gety(void);
void far _Cdecl graphdefaults(void);
char * far _Cdecl grapherrormsg(int __errorcode);
void far _Cdecl _graphfreemem(void far *__ptr, unsigned __size);
void far * far _Cdecl _graphgetmem(unsigned __size);
int far _Cdecl graphresult(void);
unsigned far _Cdecl imagesize(int __left, int __top, int __right, int __bottom);
void far _Cdecl initgraph(int far *__graphdriver,
int far *__graphmode,
const char far *__pathtodriver);
int far _Cdecl installuserdriver( const char far *__name,
int huge (*detect)(void) );
int far _Cdecl installuserfont( const char far *__name );
void far _Cdecl line(int __x1, int __y1, int __x2, int __y2);
void far _Cdecl linerel(int __dx, int __dy);
void far _Cdecl lineto(int __x, int __y);
void far _Cdecl moverel(int __dx, int __dy);
void far _Cdecl moveto(int __x, int __y);
void far _Cdecl outtext(const char far *__textstring);
void far _Cdecl outtextxy(int __x, int __y, const char far *__textstring);
void far _Cdecl pieslice(int __x, int __y, int __stangle, int __endangle,
int __radius);
void far _Cdecl putimage(int __left, int __top, const void far *__bitmap,
int __op);
void far _Cdecl putpixel(int __x, int __y, int __color);
void far _Cdecl rectangle(int __left, int __top, int __right, int __bottom);
void far _Cdecl restorecrtmode(void);
void far _Cdecl sector( int __X, int __Y, int __StAngle, int __EndAngle,
int __XRadius, int __YRadius );
void far _Cdecl setactivepage(int __page);
void far _Cdecl setallpalette(const struct palettetype far *__palette);
void far _Cdecl setaspectratio( int __xasp, int __yasp );
void far _Cdecl setbkcolor(int __color);
void far _Cdecl setcolor(int __color);
void far _Cdecl setfillpattern(const char far *__upattern, int __color);
void far _Cdecl setfillstyle(int __pattern, int __color);
unsigned far _Cdecl setgraphbufsize(unsigned __bufsize);
void far _Cdecl setgraphmode(int __mode);
void far _Cdecl setlinestyle(int __linestyle, unsigned __upattern,
int __thickness);
void far _Cdecl setpalette(int __colornum, int __color);
void far _Cdecl setrgbpalette(int __colornum,
int __red, int __green, int __blue);
void far _Cdecl settextjustify(int __horiz, int __vert);
void far _Cdecl settextstyle(int __font, int __direction, int __charsize);
void far _Cdecl setusercharsize(int __multx, int __divx,
int __multy, int __divy);
void far _Cdecl setviewport(int __left, int __top, int __right, int __bottom,
int __clip);
void far _Cdecl setvisualpage(int __page);
void far _Cdecl setwritemode( int __mode );
int far _Cdecl textheight(const char far *__textstring);
int far _Cdecl textwidth(const char far *__textstring);

/***** graphics drivers *****/

int _Cdecl registerbgidriver(void (*driver)(void));
int far _Cdecl registerfarbgidriver(void far *__driver);

/* !! These “functions” are NOT user-callable !! */
/* !! They are there just so you can link in graphics drivers !! */

void _Cdecl CGA_driver(void);
void _Cdecl EGAVGA_driver(void);
void _Cdecl IBM8514_driver(void);
void _Cdecl Herc_driver(void);
void _Cdecl ATT_driver(void);
void _Cdecl PC3270_driver(void);

extern int far _Cdecl CGA_driver_far[];
extern int far _Cdecl EGAVGA_driver_far[];
extern int far _Cdecl IBM8514_driver_far[];
extern int far _Cdecl Herc_driver_far[];
extern int far _Cdecl ATT_driver_far[];
extern int far _Cdecl PC3270_driver_far[];

/***** graphics fonts *****/

int _Cdecl registerbgifont(void (*font)(void));
int far _Cdecl registerfarbgifont(void far *__font);

/* !! These “functions” are NOT user-callable, !! */
/* !! they are there just so you can link in fonts !! */

void _Cdecl triplex_font(void);
void _Cdecl small_font(void);
void _Cdecl sansserif_font(void);
void _Cdecl gothic_font(void);

extern int far _Cdecl triplex_font_far[];
extern int far _Cdecl small_font_far[];
extern int far _Cdecl sansserif_font_far[];
extern int far _Cdecl gothic_font_far[];

#ifdef __cplusplus
}
#endif

#endif

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