sgl
annotate src/cb.c @ 4:648f8604d2b2
cont. x11 module
| author | John Tsiombikas <nuclear@siggraph.org> |
|---|---|
| date | Thu, 12 May 2011 11:04:10 +0300 |
| parents | 40491760d6e3 |
| children | 0570e27e5ebc |
| rev | line source |
|---|---|
| nuclear@0 | 1 #include <stdlib.h> |
| nuclear@0 | 2 #include <string.h> |
| nuclear@0 | 3 #include "sgl.h" |
| nuclear@4 | 4 #include "wsys.h" |
| nuclear@0 | 5 |
| nuclear@0 | 6 struct cbnode { |
| nuclear@0 | 7 void (*func[SGL_NUM_CALLBACKS])(); |
| nuclear@0 | 8 struct cbnode *next; |
| nuclear@0 | 9 }; |
| nuclear@0 | 10 |
| nuclear@4 | 11 static void notify_wsys(void); |
| nuclear@4 | 12 |
| nuclear@0 | 13 struct cbnode first_cbnode; |
| nuclear@0 | 14 struct cbnode *cb = &first_cbnode; |
| nuclear@0 | 15 |
| nuclear@0 | 16 int sgl_push_callbacks(void) |
| nuclear@0 | 17 { |
| nuclear@0 | 18 struct cbnode *node; |
| nuclear@0 | 19 |
| nuclear@0 | 20 if(!(node = malloc(sizeof *node))) { |
| nuclear@0 | 21 return -1; |
| nuclear@0 | 22 } |
| nuclear@0 | 23 node->next = cb; |
| nuclear@0 | 24 cb = node; |
| nuclear@0 | 25 sgl_clear_callbacks(); |
| nuclear@0 | 26 return 0; |
| nuclear@0 | 27 } |
| nuclear@0 | 28 |
| nuclear@0 | 29 int sgl_pop_callbacks(void) |
| nuclear@0 | 30 { |
| nuclear@0 | 31 struct cbnode *node; |
| nuclear@0 | 32 |
| nuclear@0 | 33 if(!cb->next) { |
| nuclear@0 | 34 return -1; |
| nuclear@0 | 35 } |
| nuclear@0 | 36 |
| nuclear@0 | 37 node = cb; |
| nuclear@0 | 38 cb = cb->next; |
| nuclear@0 | 39 free(node); |
| nuclear@4 | 40 |
| nuclear@4 | 41 notify_wsys(); |
| nuclear@0 | 42 return 0; |
| nuclear@0 | 43 } |
| nuclear@0 | 44 |
| nuclear@0 | 45 void sgl_clear_callbacks(void) |
| nuclear@0 | 46 { |
| nuclear@0 | 47 memset(cb->func, 0, sizeof cb->func); |
| nuclear@4 | 48 notify_wsys(); |
| nuclear@0 | 49 } |
| nuclear@0 | 50 |
| nuclear@4 | 51 void sgl_callback(int idx, void (*func)()) |
| nuclear@0 | 52 { |
| nuclear@0 | 53 cb->func[idx] = func; |
| nuclear@0 | 54 } |
| nuclear@4 | 55 |
| nuclear@4 | 56 void (*sgl_get_callback(int idx))() |
| nuclear@4 | 57 { |
| nuclear@4 | 58 return cb->func[idx]; |
| nuclear@4 | 59 } |
| nuclear@4 | 60 |
| nuclear@4 | 61 /* notify the window system module as to which events are active */ |
| nuclear@4 | 62 static void notify_wsys(void) |
| nuclear@4 | 63 { |
| nuclear@4 | 64 int i; |
| nuclear@4 | 65 struct wsys_module *ws; |
| nuclear@4 | 66 |
| nuclear@4 | 67 if((ws = sgl_wsys_module())) { |
| nuclear@4 | 68 for(i=0; i<SGL_NUM_CALLBACKS; i++) { |
| nuclear@4 | 69 ws->set_event(i, cb->func[i] != 0); |
| nuclear@4 | 70 } |
| nuclear@4 | 71 } |
| nuclear@4 | 72 } |