Patrick Georgi | 3b77b72 | 2011-07-07 15:41:53 +0200 | [diff] [blame] | 1 | /* Public Domain Curses */ |
| 2 | |
| 3 | #include "pdcdos.h" |
| 4 | |
| 5 | RCSID("$Id: pdcgetsc.c,v 1.42 2008/07/13 16:08:17 wmcbrine Exp $") |
| 6 | |
| 7 | #include <stdlib.h> |
| 8 | |
| 9 | /* return width of screen/viewport */ |
| 10 | |
| 11 | int PDC_get_columns(void) |
| 12 | { |
| 13 | PDCREGS regs; |
| 14 | int cols; |
| 15 | const char *env_cols; |
| 16 | |
| 17 | PDC_LOG(("PDC_get_columns() - called\n")); |
| 18 | |
| 19 | /* use the value from COLS environment variable, if set. MH 10-Jun-92 */ |
| 20 | /* and use the minimum of COLS and return from int10h MH 18-Jun-92 */ |
| 21 | |
| 22 | regs.h.ah = 0x0f; |
| 23 | PDCINT(0x10, regs); |
| 24 | cols = (int)regs.h.ah; |
| 25 | |
| 26 | env_cols = getenv("COLS"); |
| 27 | |
| 28 | if (env_cols) |
| 29 | cols = min(atoi(env_cols), cols); |
| 30 | |
| 31 | PDC_LOG(("PDC_get_columns() - returned: cols %d\n", cols)); |
| 32 | |
| 33 | return cols; |
| 34 | } |
| 35 | |
| 36 | /* get the cursor size/shape */ |
| 37 | |
| 38 | int PDC_get_cursor_mode(void) |
| 39 | { |
| 40 | PDC_LOG(("PDC_get_cursor_mode() - called\n")); |
| 41 | |
| 42 | return getdosmemword(0x460); |
| 43 | } |
| 44 | |
| 45 | /* return number of screen rows */ |
| 46 | |
| 47 | int PDC_get_rows(void) |
| 48 | { |
| 49 | const char *env_rows; |
| 50 | int rows; |
| 51 | |
| 52 | PDC_LOG(("PDC_get_rows() - called\n")); |
| 53 | |
| 54 | /* use the value from LINES environment variable, if set. MH 10-Jun-92 */ |
| 55 | /* and use the minimum of LINES and *ROWS. MH 18-Jun-92 */ |
| 56 | |
| 57 | rows = getdosmembyte(0x484) + 1; |
| 58 | env_rows = getenv("LINES"); |
| 59 | |
| 60 | if (env_rows) |
| 61 | rows = min(atoi(env_rows), rows); |
| 62 | |
| 63 | if (rows == 1 && pdc_adapter == _MDS_GENIUS) |
| 64 | rows = 66; |
| 65 | if (rows == 1 && pdc_adapter == _MDA) |
| 66 | rows = 25; |
| 67 | |
| 68 | if (rows == 1) |
| 69 | { |
| 70 | rows = 25; |
| 71 | pdc_direct_video = FALSE; |
| 72 | } |
| 73 | |
| 74 | switch (pdc_adapter) |
| 75 | { |
| 76 | case _EGACOLOR: |
| 77 | case _EGAMONO: |
| 78 | switch (rows) |
| 79 | { |
| 80 | case 25: |
| 81 | case 43: |
| 82 | break; |
| 83 | default: |
| 84 | rows = 25; |
| 85 | } |
| 86 | break; |
| 87 | |
| 88 | case _VGACOLOR: |
| 89 | case _VGAMONO: |
| 90 | break; |
| 91 | |
| 92 | default: |
| 93 | rows = 25; |
| 94 | break; |
| 95 | } |
| 96 | |
| 97 | PDC_LOG(("PDC_get_rows() - returned: rows %d\n", rows)); |
| 98 | |
| 99 | return rows; |
| 100 | } |