101 lines
1.9 KiB
C
101 lines
1.9 KiB
C
/* Public Domain Curses */
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#include "pdcdos.h"
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RCSID("$Id: pdcgetsc.c,v 1.42 2008/07/13 16:08:17 wmcbrine Exp $")
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#include <stdlib.h>
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/* return width of screen/viewport */
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int PDC_get_columns(void)
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{
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PDCREGS regs;
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int cols;
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const char *env_cols;
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PDC_LOG(("PDC_get_columns() - called\n"));
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/* use the value from COLS environment variable, if set. MH 10-Jun-92 */
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/* and use the minimum of COLS and return from int10h MH 18-Jun-92 */
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regs.h.ah = 0x0f;
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PDCINT(0x10, regs);
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cols = (int)regs.h.ah;
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env_cols = getenv("COLS");
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if (env_cols)
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cols = min(atoi(env_cols), cols);
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PDC_LOG(("PDC_get_columns() - returned: cols %d\n", cols));
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return cols;
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}
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/* get the cursor size/shape */
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int PDC_get_cursor_mode(void)
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{
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PDC_LOG(("PDC_get_cursor_mode() - called\n"));
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return getdosmemword(0x460);
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}
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/* return number of screen rows */
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int PDC_get_rows(void)
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{
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const char *env_rows;
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int rows;
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PDC_LOG(("PDC_get_rows() - called\n"));
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/* use the value from LINES environment variable, if set. MH 10-Jun-92 */
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/* and use the minimum of LINES and *ROWS. MH 18-Jun-92 */
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rows = getdosmembyte(0x484) + 1;
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env_rows = getenv("LINES");
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if (env_rows)
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rows = min(atoi(env_rows), rows);
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if (rows == 1 && pdc_adapter == _MDS_GENIUS)
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rows = 66;
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if (rows == 1 && pdc_adapter == _MDA)
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rows = 25;
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if (rows == 1)
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{
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rows = 25;
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pdc_direct_video = FALSE;
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}
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switch (pdc_adapter)
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{
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case _EGACOLOR:
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case _EGAMONO:
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switch (rows)
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{
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case 25:
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case 43:
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break;
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default:
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rows = 25;
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}
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break;
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case _VGACOLOR:
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case _VGAMONO:
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break;
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default:
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rows = 25;
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break;
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}
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PDC_LOG(("PDC_get_rows() - returned: rows %d\n", rows));
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return rows;
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}
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