diff options
Diffstat (limited to 'c_src/esdl2_windows.c')
-rw-r--r-- | c_src/esdl2_windows.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/c_src/esdl2_windows.c b/c_src/esdl2_windows.c new file mode 100644 index 0000000..8855987 --- /dev/null +++ b/c_src/esdl2_windows.c @@ -0,0 +1,97 @@ +// 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_window { + LIST_ENTRY(esdl2_window) entries; + + SDL_Window* window; + obj_Window* res; +}; + +static LIST_HEAD(esdl2_window_list, esdl2_window) windows; + +void esdl2_windows_init() +{ + LIST_INIT(&windows); +} + +void esdl2_windows_insert(SDL_Window* window, obj_Window* res) +{ + struct esdl2_window* item; + + item = malloc(sizeof(struct esdl2_window)); + item->window = window; + item->res = res; + + LIST_INSERT_HEAD(&windows, item, entries); +} + +struct esdl2_window* esdl2_windows_find_entry(SDL_Window* window); + +struct esdl2_window* esdl2_windows_find_entry(SDL_Window* window) +{ + struct esdl2_window* head; + + head = LIST_FIRST(&windows); + while (head != NULL) { + if (head->window == window) + return head; + + head = LIST_NEXT(head, entries); + } + + return NULL; +} + +ERL_NIF_TERM esdl2_windows_find(ErlNifEnv* env, SDL_Window* window) +{ + struct esdl2_window* entry; + ERL_NIF_TERM term; + + entry = esdl2_windows_find_entry(window); + + if (entry == NULL) + return atom_undefined; + + term = enif_make_resource(env, entry->res); + + return term; +} + +void esdl2_windows_remove(SDL_Window* window) +{ + struct esdl2_window* entry; + + entry = esdl2_windows_find_entry(window); + + if (entry == NULL) + return; + + LIST_REMOVE(entry, entries); +} + +void esdl2_windows_free() +{ + struct esdl2_window *head, *next; + + head = LIST_FIRST(&windows); + while (head != NULL) { + next = LIST_NEXT(head, entries); + free(head); + head = next; + } +} |