diff options
Diffstat (limited to 'src/sdl_hints.erl')
-rw-r--r-- | src/sdl_hints.erl | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/sdl_hints.erl b/src/sdl_hints.erl new file mode 100644 index 0000000..a6921b0 --- /dev/null +++ b/src/sdl_hints.erl @@ -0,0 +1,30 @@ +%% Copyright (c) 2015, 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. + +-module(sdl_hints). + +-export([add_callback/3]). +-export([test_callback/3]). + +%% The hint names are the same as the environment variable names +%% that SDL2 accepts. + +-spec add_callback(string(), module(), atom()) -> ok. +add_callback(Hint, Module, Function) -> + esdl2:add_hint_callback(Hint, Module, Function). + +%% This callback can be used to test hints. +-spec test_callback(string(), undefined | string(), undefined | string()) -> ok. +test_callback(Hint, OldValue, NewValue) -> + io:format("Hint ~p has value changed from ~p to ~p~n", [Hint, OldValue, NewValue]). |