kern
annotate src/term.c @ 1:ebe5e0e44a9d
pretty much finished the code for article 1, might do minor adjustments though
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Thu, 02 Dec 2010 08:45:41 +0200 |
| parents | |
| children | 86781ef20689 |
| rev | line source |
|---|---|
| nuclear@1 | 1 #include "term.h" |
| nuclear@1 | 2 #include "vid.h" |
| nuclear@1 | 3 |
| nuclear@1 | 4 static int bg, fg = 15; |
| nuclear@1 | 5 static int cursor_x, cursor_y; |
| nuclear@1 | 6 |
| nuclear@1 | 7 void set_text_color(int c) |
| nuclear@1 | 8 { |
| nuclear@1 | 9 if(c >= 0 && c < 16) { |
| nuclear@1 | 10 fg = c; |
| nuclear@1 | 11 } |
| nuclear@1 | 12 } |
| nuclear@1 | 13 |
| nuclear@1 | 14 void set_back_color(int c) |
| nuclear@1 | 15 { |
| nuclear@1 | 16 if(c >= 0 && c < 16) { |
| nuclear@1 | 17 bg = c; |
| nuclear@1 | 18 } |
| nuclear@1 | 19 } |
| nuclear@1 | 20 |
| nuclear@1 | 21 int putchar(int c) |
| nuclear@1 | 22 { |
| nuclear@1 | 23 switch(c) { |
| nuclear@1 | 24 case '\n': |
| nuclear@1 | 25 cursor_y++; |
| nuclear@1 | 26 |
| nuclear@1 | 27 case '\r': |
| nuclear@1 | 28 cursor_x = 0; |
| nuclear@1 | 29 break; |
| nuclear@1 | 30 |
| nuclear@1 | 31 case '\b': |
| nuclear@1 | 32 cursor_x--; |
| nuclear@1 | 33 set_char(' ', cursor_x, cursor_y, fg, bg); |
| nuclear@1 | 34 break; |
| nuclear@1 | 35 |
| nuclear@1 | 36 case '\t': |
| nuclear@1 | 37 cursor_x = ((cursor_x >> 3) + 1) << 3; |
| nuclear@1 | 38 break; |
| nuclear@1 | 39 |
| nuclear@1 | 40 default: |
| nuclear@1 | 41 set_char(c, cursor_x, cursor_y, fg, bg); |
| nuclear@1 | 42 if(++cursor_x >= WIDTH) { |
| nuclear@1 | 43 cursor_x = 0; |
| nuclear@1 | 44 cursor_y++; |
| nuclear@1 | 45 } |
| nuclear@1 | 46 } |
| nuclear@1 | 47 |
| nuclear@1 | 48 if(cursor_y >= HEIGHT) { |
| nuclear@1 | 49 scroll_scr(); |
| nuclear@1 | 50 cursor_y--; |
| nuclear@1 | 51 } |
| nuclear@1 | 52 return c; |
| nuclear@1 | 53 } |