deepstone
annotate src/mouse.c @ 12:c29a6e024950
merged
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Mon, 28 Nov 2011 05:03:22 +0200 |
| parents | |
| children | 00d84ab1ef26 |
| rev | line source |
|---|---|
| nuclear@0 | 1 #include "mouse.h" |
| nuclear@0 | 2 |
| nuclear@0 | 3 #define INTR 0x33 |
| nuclear@0 | 4 |
| nuclear@0 | 5 #define QUERY 0 |
| nuclear@0 | 6 #define SHOW 1 |
| nuclear@0 | 7 #define HIDE 2 |
| nuclear@0 | 8 #define READ 3 |
| nuclear@0 | 9 #define WRITE 4 |
| nuclear@0 | 10 |
| nuclear@0 | 11 #define XLIM 7 |
| nuclear@0 | 12 #define YLIM 8 |
| nuclear@0 | 13 |
| nuclear@0 | 14 int have_mouse(void) |
| nuclear@0 | 15 { |
| nuclear@0 | 16 int res; |
| nuclear@0 | 17 asm { |
| nuclear@0 | 18 mov ax, QUERY |
| nuclear@0 | 19 int INTR |
| nuclear@0 | 20 mov res, ax |
| nuclear@0 | 21 } |
| nuclear@0 | 22 return res; |
| nuclear@0 | 23 } |
| nuclear@0 | 24 |
| nuclear@0 | 25 void show_mouse(int show) |
| nuclear@0 | 26 { |
| nuclear@0 | 27 int cmd = show ? SHOW : HIDE; |
| nuclear@0 | 28 asm { |
| nuclear@0 | 29 mov ax, cmd |
| nuclear@0 | 30 int INTR |
| nuclear@0 | 31 } |
| nuclear@0 | 32 } |
| nuclear@0 | 33 |
| nuclear@0 | 34 int read_mouse(int *xp, int *yp) |
| nuclear@0 | 35 { |
| nuclear@0 | 36 int x, y, bn; |
| nuclear@0 | 37 |
| nuclear@0 | 38 asm { |
| nuclear@0 | 39 mov ax, READ |
| nuclear@0 | 40 int INTR |
| nuclear@0 | 41 mov bn, bx |
| nuclear@0 | 42 mov x, cx |
| nuclear@0 | 43 mov y, dx |
| nuclear@0 | 44 /* XXX some sort of div by 8 in the original code ? */ |
| nuclear@0 | 45 } |
| nuclear@0 | 46 |
| nuclear@0 | 47 if(xp) *xp = x; |
| nuclear@0 | 48 if(yp) *yp = y; |
| nuclear@0 | 49 return bn; |
| nuclear@0 | 50 } |
| nuclear@0 | 51 |
| nuclear@0 | 52 void set_mouse(int x, int y) |
| nuclear@0 | 53 { |
| nuclear@0 | 54 asm { |
| nuclear@0 | 55 mov ax, WRITE |
| nuclear@0 | 56 mov cx, x |
| nuclear@0 | 57 mov dx, y |
| nuclear@0 | 58 int INTR |
| nuclear@0 | 59 } |
| nuclear@0 | 60 } |
| nuclear@0 | 61 |
| nuclear@0 | 62 void set_mouse_limits(int xmin, int ymin, int xmax, int ymax) |
| nuclear@0 | 63 { |
| nuclear@0 | 64 asm { |
| nuclear@0 | 65 mov ax, XLIM |
| nuclear@0 | 66 mov cx, xmin |
| nuclear@0 | 67 mov dx, xmax |
| nuclear@0 | 68 int INTR |
| nuclear@0 | 69 mov ax, YLIM |
| nuclear@0 | 70 mov cx, ymin |
| nuclear@0 | 71 mov dx, ymax |
| nuclear@0 | 72 int INTR |
| nuclear@0 | 73 } |
| nuclear@0 | 74 } |