nuclear@0: #include <stdlib.h>
nuclear@0: #include <string.h>
nuclear@0: #include "sgl.h"
nuclear@4: #include "wsys.h"
nuclear@0: 
nuclear@0: struct cbnode {
nuclear@0: 	void (*func[SGL_NUM_CALLBACKS])();
nuclear@0: 	struct cbnode *next;
nuclear@0: };
nuclear@0: 
nuclear@4: static void notify_wsys(void);
nuclear@4: 
nuclear@0: struct cbnode first_cbnode;
nuclear@0: struct cbnode *cb = &first_cbnode;
nuclear@0: 
nuclear@0: int sgl_push_callbacks(void)
nuclear@0: {
nuclear@0: 	struct cbnode *node;
nuclear@0: 
nuclear@0: 	if(!(node = malloc(sizeof *node))) {
nuclear@0: 		return -1;
nuclear@0: 	}
nuclear@0: 	node->next = cb;
nuclear@0: 	cb = node;
nuclear@0: 	sgl_clear_callbacks();
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: int sgl_pop_callbacks(void)
nuclear@0: {
nuclear@0: 	struct cbnode *node;
nuclear@0: 
nuclear@0: 	if(!cb->next) {
nuclear@0: 		return -1;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	node = cb;
nuclear@0: 	cb = cb->next;
nuclear@0: 	free(node);
nuclear@4: 
nuclear@4: 	notify_wsys();
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: void sgl_clear_callbacks(void)
nuclear@0: {
nuclear@0: 	memset(cb->func, 0, sizeof cb->func);
nuclear@4: 	notify_wsys();
nuclear@0: }
nuclear@0: 
nuclear@5: void sgl_set_callback(int idx, void (*func)())
nuclear@0: {
nuclear@5: 	struct wsys_module *ws;
nuclear@5: 
nuclear@0: 	cb->func[idx] = func;
nuclear@5: 
nuclear@5: 	if((ws = sgl_wsys_module())) {
nuclear@5: 		ws->set_event(idx, func != 0);
nuclear@5: 	}
nuclear@0: }
nuclear@4: 
nuclear@4: void (*sgl_get_callback(int idx))()
nuclear@4: {
nuclear@4: 	return cb->func[idx];
nuclear@4: }
nuclear@4: 
nuclear@6: 
nuclear@6: void sgl_create_callback(sgl_create_callback_t func)
nuclear@6: {
nuclear@6: 	sgl_set_callback(SGL_CREATE, func);
nuclear@6: }
nuclear@6: 
nuclear@6: void sgl_close_callback(sgl_close_callback_t func)
nuclear@6: {
nuclear@6: 	sgl_set_callback(SGL_CLOSE, func);
nuclear@6: }
nuclear@6: 
nuclear@6: void sgl_display_callback(sgl_display_callback_t func)
nuclear@6: {
nuclear@6: 	sgl_set_callback(SGL_DISPLAY, func);
nuclear@6: }
nuclear@6: 
nuclear@6: void sgl_reshape_callback(sgl_reshape_callback_t func)
nuclear@6: {
nuclear@6: 	sgl_set_callback(SGL_RESHAPE, func);
nuclear@6: }
nuclear@6: 
nuclear@6: void sgl_keyboard_callback(sgl_keyboard_callback_t func)
nuclear@6: {
nuclear@6: 	sgl_set_callback(SGL_KEYBOARD, func);
nuclear@6: }
nuclear@6: 
nuclear@6: void sgl_mouse_callback(sgl_mouse_callback_t func)
nuclear@6: {
nuclear@6: 	sgl_set_callback(SGL_MOUSE, func);
nuclear@6: }
nuclear@6: 
nuclear@6: void sgl_motion_callback(sgl_motion_callback_t func)
nuclear@6: {
nuclear@6: 	sgl_set_callback(SGL_MOTION, func);
nuclear@6: }
nuclear@6: 
nuclear@6: void sgl_passive_callback(sgl_passive_callback_t func)
nuclear@6: {
nuclear@6: 	sgl_set_callback(SGL_PASSIVE, func);
nuclear@6: }
nuclear@6: 
nuclear@6: void sgl_idle_callback(sgl_idle_callback_t func)
nuclear@6: {
nuclear@6: 	sgl_set_callback(SGL_IDLE, func);
nuclear@6: }
nuclear@6: 
nuclear@6: 
nuclear@4: /* notify the window system module as to which events are active */
nuclear@4: static void notify_wsys(void)
nuclear@4: {
nuclear@4: 	int i;
nuclear@4: 	struct wsys_module *ws;
nuclear@4: 
nuclear@4: 	if((ws = sgl_wsys_module())) {
nuclear@4: 		for(i=0; i<SGL_NUM_CALLBACKS; i++) {
nuclear@4: 			ws->set_event(i, cb->func[i] != 0);
nuclear@4: 		}
nuclear@4: 	}
nuclear@4: }