diff options
Diffstat (limited to 'c_src/esdl2_renderers.c')
-rw-r--r-- | c_src/esdl2_renderers.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/c_src/esdl2_renderers.c b/c_src/esdl2_renderers.c new file mode 100644 index 0000000..281079c --- /dev/null +++ b/c_src/esdl2_renderers.c @@ -0,0 +1,104 @@ +// Copyright (c) 2017, 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); +} + +struct esdl2_renderer* esdl2_renderers_find_entry(SDL_Renderer* renderer); + +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; + } +} + |