home *** CD-ROM | disk | FTP | other *** search
- /**
- ** PHCHAR.C
- **
- ** Copyright (C) 1992, Csaba Biegl
- ** 820 Stirrup Dr, Nashville, TN, 37221
- ** csaba@vuse.vanderbilt.edu
- **
- ** This file is distributed under the terms listed in the document
- ** "copying.cb", available from the author at the address above.
- ** A copy of "copying.cb" should accompany this file; if not, a copy
- ** should be available from where this file was obtained. This file
- ** may not be distributed without a verbatim copy of "copying.cb".
- ** You should also have received a copy of the GNU General Public
- ** License along with this program (it is in the file "copying");
- ** if not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- ** Cambridge, MA 02139, USA.
- **
- ** 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.
- **/
-
- #include "p16.h"
- #include "worddraw.h"
-
- void _GrPHDrawChar(long a,int w,int h,char far *bits,int fg,int bg)
- {
- pixptr p = P_ADDRESS(CURC,a);
- int skip = CURC->gc_lineoffset - (w << 1);
- int fgop = C_OPER(fg);
- int bgop = C_OPER(bg);
- int drawfg = _GrPHDrawTable[fgop] ^ (fg &= C_SIGNIF);
- int drawbg = _GrPHDrawTable[bgop] ^ (bg &= C_SIGNIF);
-
- if((w <= 0) || (h <= 0)) return;
- _ClrDir();
- _SaveDS();
- if(drawfg && drawbg && (fgop == bgop)) {
- switch(fgop) {
- case C_XOR: _WriteFontXor(p,skip,bits,w,h,fg,bg); break;
- case C_OR: _WriteFontOr(p,skip,bits,w,h,fg,bg); break;
- case C_AND: _WriteFontAnd(p,skip,bits,w,h,fg,bg); break;
- default: _WriteFont(p,skip,bits,w,h,fg,bg); break;
- }
- }
- else {
- if(drawfg) switch(fgop) {
- case C_XOR: _WrFGCFontXor(p,skip,bits,w,h,fg); break;
- case C_OR: _WrFGCFontOr(p,skip,bits,w,h,fg); break;
- case C_AND: _WrFGCFontAnd(p,skip,bits,w,h,fg); break;
- default: _WrFGCFont(p,skip,bits,w,h,fg); break;
- }
- if(drawbg) switch(bgop) {
- case C_XOR: _WrBGCFontXor(p,skip,bits,w,h,bg); break;
- case C_OR: _WrBGCFontOr(p,skip,bits,w,h,bg); break;
- case C_AND: _WrBGCFontAnd(p,skip,bits,w,h,bg); break;
- default: _WrBGCFont(p,skip,bits,w,h,bg); break;
- }
- }
- _RestoreDS();
- }
-