home *** CD-ROM | disk | FTP | other *** search
- /**
- ** CLEAR.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 "grx.h"
- #include "libgrx.h"
-
- void GrClearClipBox(int bg)
- {
- MOUSE_FLAG;
-
- MOUSE_BLOCK(CURC,_GrLoX,_GrLoY,_GrHiX,_GrHiY);
- _GrSetPixBlock(PIXEL_ADDR(_GrLoX,_GrLoY),
- bg,
- (_GrHiX - _GrLoX + 1),
- (_GrHiY - _GrLoY + 1)
- );
- MOUSE_UNBLOCK();
- }
-
- void GrClearContext(int bg)
- {
- MOUSE_FLAG;
-
- MOUSE_BLOCK(CURC,0,0,_GrMaxX,_GrMaxY);
- _GrSetPixBlock(PIXEL_ADDR(0,0),bg,_GrSizeX,_GrSizeY);
- MOUSE_UNBLOCK();
- }
-
- void GrClearScreen(int bg)
- {
- GrContext save;
- MOUSE_FLAG;
-
- GrSaveContext(&save);
- GrSetContext(SCREEN);
- MOUSE_BLOCK(CURC,0,0,_GrMaxX,_GrMaxY);
- _GrSetPixBlock(PIXEL_ADDR(0,0),bg,_GrScreenX,_GrScreenY);
- MOUSE_UNBLOCK();
- GrSetContext(&save);
- }
-