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// Copyright (c) 2017-2018, Loïc Hoguin <[email protected]>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#include "esdl2.h"
#include <sys/queue.h>
struct esdl2_renderer {
LIST_ENTRY(esdl2_renderer) entries;
SDL_Renderer* renderer;
obj_Renderer* res;
obj_Window* window_res;
};
static LIST_HEAD(esdl2_renderer_list, esdl2_renderer) renderers;
void esdl2_renderers_init()
{
LIST_INIT(&renderers);
}
void esdl2_renderers_insert(SDL_Renderer* renderer, obj_Renderer* res, obj_Window* window_res)
{
struct esdl2_renderer* item;
item = malloc(sizeof(struct esdl2_renderer));
item->renderer = renderer;
item->res = res;
item->window_res = window_res;
enif_keep_resource(window_res);
LIST_INSERT_HEAD(&renderers, item, entries);
}
static struct esdl2_renderer* esdl2_renderers_find_entry(SDL_Renderer* renderer)
{
struct esdl2_renderer* head;
head = LIST_FIRST(&renderers);
while (head != NULL) {
if (head->renderer == renderer)
return head;
head = LIST_NEXT(head, entries);
}
return NULL;
}
ERL_NIF_TERM esdl2_renderers_find(ErlNifEnv* env, SDL_Renderer* renderer)
{
struct esdl2_renderer* entry;
ERL_NIF_TERM term;
entry = esdl2_renderers_find_entry(renderer);
if (entry == NULL)
return atom_undefined;
term = enif_make_resource(env, entry->res);
return term;
}
void esdl2_renderers_remove(SDL_Renderer* renderer)
{
struct esdl2_renderer* entry;
entry = esdl2_renderers_find_entry(renderer);
if (entry == NULL)
return;
enif_release_resource(entry->window_res);
LIST_REMOVE(entry, entries);
}
void esdl2_renderers_free()
{
struct esdl2_renderer *head, *next;
head = LIST_FIRST(&renderers);
while (head != NULL) {
next = LIST_NEXT(head, entries);
free(head);
head = next;
}
}
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