// Copyright (c) 2014-2018, 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"
// @todo These operations should probably occur in the thread.
void dtor_Window(ErlNifEnv* env, void* obj)
{
SDL_Window* window = NIF_RES_GET(Window, obj);
SDL_DestroyWindow(window);
esdl2_windows_remove(window);
}
#define WINDOW_FLAGS(F) \
F(fullscreen, SDL_WINDOW_FULLSCREEN) \
F(opengl, SDL_WINDOW_OPENGL) \
F(shown, SDL_WINDOW_SHOWN) \
F(hidden, SDL_WINDOW_HIDDEN) \
F(borderless, SDL_WINDOW_BORDERLESS) \
F(resizable, SDL_WINDOW_RESIZABLE) \
F(minimized, SDL_WINDOW_MINIMIZED) \
F(maximized, SDL_WINDOW_MAXIMIZED) \
F(input_grabbed, SDL_WINDOW_INPUT_GRABBED) \
F(input_focus, SDL_WINDOW_INPUT_FOCUS) \
F(mouse_focus, SDL_WINDOW_MOUSE_FOCUS) \
F(fullscreen_desktop, SDL_WINDOW_FULLSCREEN_DESKTOP) \
F(foreign, SDL_WINDOW_FOREIGN) \
F(allow_high_dpi, SDL_WINDOW_ALLOW_HIGHDPI) \
F(mouse_capture, SDL_WINDOW_MOUSE_CAPTURE) \
F(always_on_top, SDL_WINDOW_ALWAYS_ON_TOP) \
F(skip_taskbar, SDL_WINDOW_SKIP_TASKBAR) \
F(utility, SDL_WINDOW_UTILITY) \
F(tooltip, SDL_WINDOW_TOOLTIP) \
F(popup_menu, SDL_WINDOW_POPUP_MENU) \
F(vulkan, SDL_WINDOW_VULKAN)
static NIF_LIST_TO_FLAGS_FUNCTION(list_to_window_flags, Uint32, WINDOW_FLAGS)
static NIF_FLAGS_TO_LIST_FUNCTION(window_flags_to_list, Uint32, WINDOW_FLAGS)
#define WINDOW_POS_ENUM(E) \
E(centered, SDL_WINDOWPOS_CENTERED) \
E(undefined, SDL_WINDOWPOS_UNDEFINED)
static NIF_ATOM_TO_ENUM_FUNCTION(atom_to_window_pos, int, WINDOW_POS_ENUM)
#define WINDOW_EVENT_ENUM(E) \
E(shown, SDL_WINDOWEVENT_SHOWN) \
E(hidden, SDL_WINDOWEVENT_HIDDEN) \
E(exposed, SDL_WINDOWEVENT_EXPOSED) \
E(moved, SDL_WINDOWEVENT_MOVED) \
E(resized, SDL_WINDOWEVENT_RESIZED) \
E(size_changed, SDL_WINDOWEVENT_SIZE_CHANGED) \
E(minimized, SDL_WINDOWEVENT_MINIMIZED) \
E(maximized, SDL_WINDOWEVENT_MAXIMIZED) \
E(restored, SDL_WINDOWEVENT_RESTORED) \
E(enter, SDL_WINDOWEVENT_ENTER) \
E(leave, SDL_WINDOWEVENT_LEAVE) \
E(focus_gained, SDL_WINDOWEVENT_FOCUS_GAINED) \
E(focus_lost, SDL_WINDOWEVENT_FOCUS_LOST) \
E(close, SDL_WINDOWEVENT_CLOSE) \
E(take_focus, SDL_WINDOWEVENT_TAKE_FOCUS) \
E(hit_test, SDL_WINDOWEVENT_HIT_TEST)
NIF_ENUM_TO_ATOM_FUNCTION(window_event_to_atom, Uint8, WINDOW_EVENT_ENUM)
#define WINDOW_FULLSCREEN_ENUM(E) \
E(fullscreen, SDL_WINDOW_FULLSCREEN) \
E(fullscreen_desktop, SDL_WINDOW_FULLSCREEN_DESKTOP) \
E(windowed, 0)
static NIF_ATOM_TO_ENUM_FUNCTION(atom_to_window_fullscreen, Uint32, WINDOW_FULLSCREEN_ENUM)
#define HIT_TEST_ENUM(E) \
E(normal, SDL_HITTEST_NORMAL) \
E(draggable, SDL_HITTEST_DRAGGABLE) \
E(top_left, SDL_HITTEST_RESIZE_TOPLEFT) \
E(top, SDL_HITTEST_RESIZE_TOP) \
E(top_right, SDL_HITTEST_RESIZE_TOPRIGHT) \
E(right, SDL_HITTEST_RESIZE_RIGHT) \
E(bottom_right, SDL_HITTEST_RESIZE_BOTTOMRIGHT) \
E(bottom, SDL_HITTEST_RESIZE_BOTTOM) \
E(bottom_left, SDL_HITTEST_RESIZE_BOTTOMLEFT) \
E(left, SDL_HITTEST_RESIZE_LEFT)
static NIF_ATOM_TO_ENUM_FUNCTION(atom_to_hit_test_result, SDL_HitTestResult, HIT_TEST_ENUM)
// create_window
NIF_CALL_HANDLER(thread_create_window)
{
SDL_Window* window;
obj_Window* res;
ERL_NIF_TERM term;
window = SDL_CreateWindow(args[0], (long)args[1], (long)args[2], (long)args[3], (long)args[4], (long)args[5]);
enif_free(args[0]);
if (!window)
return sdl_error_tuple(env);
NIF_RES_TO_PTR_AND_TERM(Window, window, res, term);
esdl2_windows_insert(window, res);
return enif_make_tuple2(env,
atom_ok,
term
);
}
NIF_FUNCTION(create_window)
{
ErlNifBinary bin;
char* title;
int x, y, w, h;
Uint32 flags = 0;
if (enif_is_atom(env, argv[1])) {
BADARG_IF(!atom_to_window_pos(env, argv[1], &x));
} else {
BADARG_IF(!enif_get_int(env, argv[1], &x));
}
if (enif_is_atom(env, argv[2])) {
BADARG_IF(!atom_to_window_pos(env, argv[2], &y));
} else {
BADARG_IF(!enif_get_int(env, argv[2], &y));
}
BADARG_IF(!enif_get_int(env, argv[3], &w));
BADARG_IF(!enif_get_int(env, argv[4], &h));
BADARG_IF(!list_to_window_flags(env, argv[5], &flags));
// Getting the title last to simplify the code due to memory allocation.
BADARG_IF(!enif_inspect_binary(env, argv[0], &bin));
title = enif_alloc(bin.size + 1);
memcpy(title, bin.data, bin.size);
title[bin.size] = '\0';
return nif_thread_call(env, thread_create_window, 6,
title, x, y, w, h, flags);
}
// create_window_and_renderer
NIF_CALL_HANDLER(thread_create_window_and_renderer)
{
SDL_Window* window;
SDL_Renderer* renderer;
ERL_NIF_TERM wterm, rterm;
if (0 != SDL_CreateWindowAndRenderer((long)args[0], (long)args[1], (long)args[2], &window, &renderer))
return sdl_error_tuple(env);
NIF_RES_TO_TERM(Window, window, wterm);
NIF_RES_TO_TERM(Renderer, renderer, rterm);
return enif_make_tuple3(env,
atom_ok,
wterm,
rterm
);
}
NIF_FUNCTION(create_window_and_renderer)
{
int w, h;
Uint32 flags = 0;
BADARG_IF(!enif_get_int(env, argv[0], &w));
BADARG_IF(!enif_get_int(env, argv[1], &h));
BADARG_IF(!list_to_window_flags(env, argv[2], &flags));
return nif_thread_call(env, thread_create_window_and_renderer, 3,
w, h, flags);
}
// get_grabbed_window
NIF_CALL_HANDLER(thread_get_grabbed_window)
{
SDL_Window* window;
window = SDL_GetGrabbedWindow();
if (!window)
return atom_undefined;
return esdl2_windows_find(env, window);
}
NIF_FUNCTION(get_grabbed_window)
{
return nif_thread_call(env, thread_get_grabbed_window, 0);
}
// get_window_borders_size
NIF_CALL_HANDLER(thread_get_window_borders_size)
{
int top, left, bottom, right;
ERL_NIF_TERM map;
if (SDL_GetWindowBordersSize(args[0], &top, &left, &bottom, &right))
return atom_undefined;
map = enif_make_new_map(env);
enif_make_map_put(env, map, atom_top,
enif_make_int(env, top), &map);
enif_make_map_put(env, map, atom_left,
enif_make_int(env, left), &map);
enif_make_map_put(env, map, atom_bottom,
enif_make_int(env, bottom), &map);
enif_make_map_put(env, map, atom_right,
enif_make_int(env, right), &map);
return map;
}
NIF_FUNCTION(get_window_borders_size)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_borders_size, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_brightness
NIF_CALL_HANDLER(thread_get_window_brightness)
{
return enif_make_double(env, SDL_GetWindowBrightness(args[0]));
}
NIF_FUNCTION(get_window_brightness)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_brightness, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_display_index
NIF_CALL_HANDLER(thread_get_window_display_index)
{
int i = SDL_GetWindowDisplayIndex(args[0]);
if (i < 0)
return sdl_error_tuple(env);
return enif_make_tuple2(env,
atom_ok,
enif_make_int(env, i)
);
}
NIF_FUNCTION(get_window_display_index)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_display_index, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_display_mode
NIF_CALL_HANDLER(thread_get_window_display_mode)
{
SDL_DisplayMode mode;
if (SDL_GetWindowDisplayMode(args[0], &mode))
return sdl_error_tuple(env);
return enif_make_tuple2(env,
atom_ok,
display_mode_to_map(env, &mode)
);
}
NIF_FUNCTION(get_window_display_mode)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_display_mode, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_flags
NIF_CALL_HANDLER(thread_get_window_flags)
{
return window_flags_to_list(env, SDL_GetWindowFlags(args[0]));
}
NIF_FUNCTION(get_window_flags)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_flags, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_from_id
NIF_CALL_HANDLER(thread_get_window_from_id)
{
SDL_Window* window;
window = SDL_GetWindowFromID((long)args[0]);
if (!window)
return atom_undefined;
return esdl2_windows_find(env, window);
}
NIF_FUNCTION(get_window_from_id)
{
Uint32 windowID;
BADARG_IF(!enif_get_uint(env, argv[0], &windowID));
return nif_thread_call(env, thread_get_window_from_id, 1, windowID);
}
// get_window_gamma_ramp
NIF_CALL_HANDLER(thread_get_window_gamma_ramp)
{
Uint16 gamma[256 * 3];
ERL_NIF_TERM list[3];
int i, j;
if (SDL_GetWindowGammaRamp(args[0], gamma, gamma + 256, gamma + 512))
return sdl_error_tuple(env);
for (i = 0; i < 3; i++) {
list[i] = enif_make_list(env, 0);
for (j = 255; j >= 0; j--) {
list[i] = enif_make_list_cell(env,
enif_make_uint(env, gamma[i * 256 + j]),
list[i]);
}
}
return enif_make_tuple3(env, list[0], list[1], list[2]);
}
NIF_FUNCTION(get_window_gamma_ramp)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_gamma_ramp, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_grab
NIF_CALL_HANDLER(thread_get_window_grab)
{
if (SDL_GetWindowGrab(args[0]))
return atom_true;
return atom_false;
}
NIF_FUNCTION(get_window_grab)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_grab, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_id
NIF_CALL_HANDLER(thread_get_window_id)
{
return enif_make_uint(env, SDL_GetWindowID(args[0]));
}
NIF_FUNCTION(get_window_id)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_id, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_maximum_size
NIF_CALL_HANDLER(thread_get_window_maximum_size)
{
int w, h;
SDL_GetWindowMaximumSize(args[0], &w, &h);
return enif_make_tuple2(env,
enif_make_int(env, w),
enif_make_int(env, h)
);
}
NIF_FUNCTION(get_window_maximum_size)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_maximum_size, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_minimum_size
NIF_CALL_HANDLER(thread_get_window_minimum_size)
{
int w, h;
SDL_GetWindowMinimumSize(args[0], &w, &h);
return enif_make_tuple2(env,
enif_make_int(env, w),
enif_make_int(env, h)
);
}
NIF_FUNCTION(get_window_minimum_size)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_minimum_size, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_opacity
NIF_CALL_HANDLER(thread_get_window_opacity)
{
float opacity;
if (SDL_GetWindowOpacity(args[0], &opacity))
return sdl_error_tuple(env);
return enif_make_tuple2(env,
atom_ok,
enif_make_double(env, opacity)
);
}
NIF_FUNCTION(get_window_opacity)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_opacity, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_pixel_format
NIF_CALL_HANDLER(thread_get_window_pixel_format)
{
Uint32 format;
format = SDL_GetWindowPixelFormat(args[0]);
return pixel_format_to_atom(format);
}
NIF_FUNCTION(get_window_pixel_format)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_pixel_format, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_position
NIF_CALL_HANDLER(thread_get_window_position)
{
int x, y;
SDL_GetWindowPosition(args[0], &x, &y);
return enif_make_tuple2(env,
enif_make_int(env, x),
enif_make_int(env, y)
);
}
NIF_FUNCTION(get_window_position)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_position, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_size
NIF_CALL_HANDLER(thread_get_window_size)
{
int w, h;
SDL_GetWindowSize(args[0], &w, &h);
return enif_make_tuple2(env,
enif_make_int(env, w),
enif_make_int(env, h)
);
}
NIF_FUNCTION(get_window_size)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_size, 1,
NIF_RES_GET(Window, window_res));
}
// get_window_title
NIF_CALL_HANDLER(thread_get_window_title)
{
ErlNifBinary bin;
const char* title;
title = SDL_GetWindowTitle(args[0]);
if (!title)
return sdl_error_tuple(env);
enif_alloc_binary(strlen(title), &bin);
memcpy(bin.data, title, bin.size);
return enif_make_binary(env, &bin);
}
NIF_FUNCTION(get_window_title)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_get_window_title, 1,
NIF_RES_GET(Window, window_res));
}
// hide_window
NIF_CAST_HANDLER(thread_hide_window)
{
SDL_HideWindow(args[0]);
}
NIF_FUNCTION(hide_window)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_cast(env, thread_hide_window, 1,
NIF_RES_GET(Window, window_res));
}
// maximize_window
NIF_CAST_HANDLER(thread_maximize_window)
{
SDL_MaximizeWindow(args[0]);
}
NIF_FUNCTION(maximize_window)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_cast(env, thread_maximize_window, 1,
NIF_RES_GET(Window, window_res));
}
// minimize_window
NIF_CAST_HANDLER(thread_minimize_window)
{
SDL_MinimizeWindow(args[0]);
}
NIF_FUNCTION(minimize_window)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_cast(env, thread_minimize_window, 1,
NIF_RES_GET(Window, window_res));
}
// raise_window
NIF_CAST_HANDLER(thread_raise_window)
{
SDL_RaiseWindow(args[0]);
}
NIF_FUNCTION(raise_window)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_cast(env, thread_raise_window, 1,
NIF_RES_GET(Window, window_res));
}
// restore_window
NIF_CAST_HANDLER(thread_restore_window)
{
SDL_RestoreWindow(args[0]);
}
NIF_FUNCTION(restore_window)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_cast(env, thread_restore_window, 1,
NIF_RES_GET(Window, window_res));
}
// set_window_bordered
NIF_CAST_HANDLER(thread_set_window_bordered)
{
SDL_SetWindowBordered(args[0], (long)args[1]);
}
NIF_FUNCTION(set_window_bordered)
{
void* window_res;
SDL_bool b;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!atom_to_bool(env, argv[1], &b));
return nif_thread_cast(env, thread_set_window_bordered, 2,
NIF_RES_GET(Window, window_res), b);
}
// set_window_brightness
NIF_CALL_HANDLER(thread_set_window_brightness)
{
int ret = SDL_SetWindowBrightness(args[0], *((double*)args[1]));
enif_free(args[1]);
if (ret != 0)
return sdl_error_tuple(env);
return atom_ok;
}
NIF_FUNCTION(set_window_brightness)
{
void* window_res;
double *brightnessPtr;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
brightnessPtr = (double*)enif_alloc(sizeof(double));
if (!enif_get_double(env, argv[1], brightnessPtr)) {
enif_free(brightnessPtr);
return enif_make_badarg(env);
}
return nif_thread_call(env, thread_set_window_brightness, 2,
NIF_RES_GET(Window, window_res), brightnessPtr);
}
// set_window_display_mode
NIF_CALL_HANDLER(thread_set_window_display_mode)
{
SDL_DisplayMode mode;
mode.format = (long)args[1];
mode.w = (long)args[2];
mode.h = (long)args[3];
mode.refresh_rate = (long)args[4];
if (SDL_SetWindowDisplayMode(args[0], &mode))
return sdl_error_tuple(env);
return atom_ok;
}
NIF_FUNCTION(set_window_display_mode)
{
void* window_res;
ERL_NIF_TERM term;
Uint32 format;
int w, h, refresh_rate;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!enif_get_map_value(env, argv[1], atom_format, &term));
BADARG_IF(!atom_to_pixel_format(env, term, &format));
BADARG_IF(!enif_get_map_value(env, argv[1], atom_w, &term));
BADARG_IF(!enif_get_int(env, term, &w));
BADARG_IF(!enif_get_map_value(env, argv[1], atom_h, &term));
BADARG_IF(!enif_get_int(env, term, &h));
BADARG_IF(!enif_get_map_value(env, argv[1], atom_refresh_rate, &term));
BADARG_IF(!enif_get_int(env, term, &refresh_rate));
return nif_thread_call(env, thread_set_window_display_mode, 5,
NIF_RES_GET(Window, window_res), format, w, h, refresh_rate);
}
// set_window_fullscreen
NIF_CALL_HANDLER(thread_set_window_fullscreen)
{
if (SDL_SetWindowFullscreen(args[0], (long)args[1]))
return sdl_error_tuple(env);
return atom_ok;
}
NIF_FUNCTION(set_window_fullscreen)
{
void* window_res;
Uint32 flags;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!atom_to_window_fullscreen(env, argv[1], &flags));
return nif_thread_call(env, thread_set_window_fullscreen, 2,
NIF_RES_GET(Window, window_res), flags);
}
// set_window_gamma_ramp
NIF_CALL_HANDLER(thread_set_window_gamma_ramp)
{
int ret = SDL_SetWindowGammaRamp(args[0], args[1],
((Uint16*)args[1]) + 256,
((Uint16*)args[1]) + 512);
enif_free(args[1]);
if (ret != 0)
return sdl_error_tuple(env);
return atom_ok;
}
NIF_FUNCTION(set_window_gamma_ramp)
{
void* window_res;
Uint16 *gamma;
ERL_NIF_TERM list, head;
int i, j;
unsigned int value;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
gamma = enif_alloc(sizeof(Uint16) * 256 * 3);
for (i = 0; i < 3; i++) {
list = argv[i + 1];
for (j = 0; j < 256; j++) {
if (!enif_get_list_cell(env, list, &head, &list))
goto set_window_gamma_ramp_badarg;
if (!enif_get_uint(env, head, &value))
goto set_window_gamma_ramp_badarg;
if (value > 65535)
goto set_window_gamma_ramp_badarg;
gamma[i * 256 + j] = value;
}
}
return nif_thread_call(env, thread_set_window_gamma_ramp, 2,
NIF_RES_GET(Window, window_res), gamma);
set_window_gamma_ramp_badarg:
enif_free(gamma);
return enif_make_badarg(env);
}
// set_window_grab
NIF_CAST_HANDLER(thread_set_window_grab)
{
SDL_SetWindowGrab(args[0], (long)args[1]);
}
NIF_FUNCTION(set_window_grab)
{
void* window_res;
SDL_bool b;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!atom_to_bool(env, argv[1], &b));
return nif_thread_cast(env, thread_set_window_grab, 2,
NIF_RES_GET(Window, window_res), b);
}
// set_window_hit_test
#define WAIT_FOR_RESULT -1
#define NO_RESULT -2
typedef struct hit_test_callback_data {
char module[256];
char function[256];
ErlNifMutex* lock;
ErlNifCond* cond;
int result; /* SDL_HitTestResult | WAIT_FOR_RESULT | NO_RESULT */
} hit_test_callback_data;
static SDL_HitTestResult hit_test_callback(SDL_Window* window, const SDL_Point* area, void* data)
{
ERL_NIF_TERM module, function, window_term;
int result;
ErlNifEnv* env = enif_alloc_env();
hit_test_callback_data* callback = SDL_GetWindowData(window, "hit_test_callback");
enif_mutex_lock(callback->lock);
module = enif_make_atom(env, callback->module);
function = enif_make_atom(env, callback->function);
callback->result = WAIT_FOR_RESULT;
window_term = esdl2_windows_find(env, window);
// Tell our Erlang process to execute the callback.
enif_send(NULL, get_callback_process(), env,
enif_make_tuple6(env, atom_callback,
module,
function,
enif_make_list2(env, window_term, point_to_map(env, area)),
atom_set_window_hit_test_result,
enif_make_list1(env, window_term)
));
enif_free_env(env);
// Then wait for the result.
while (callback->result == WAIT_FOR_RESULT)
enif_cond_wait(callback->cond, callback->lock);
result = callback->result;
callback->result = NO_RESULT;
enif_mutex_unlock(callback->lock);
return result;
}
NIF_CALL_HANDLER(thread_set_window_hit_test)
{
hit_test_callback_data* callback = SDL_GetWindowData(args[0], "hit_test_callback");
// We need to copy the module/function because atoms are theoretically
// dependent on an environment. This is not the case today but might change.
if (callback) {
// We already have an SDL2 window hit test callback.
// Just update the Erlang module/function we need to call.
enif_mutex_lock(callback->lock);
strcpy(callback->module, args[1]),
strcpy(callback->function, args[2]),
enif_mutex_unlock(callback->lock);
} else {
// This is the first time this function is called. We need
// to create the initial callback along with its lock/cond.
callback = (hit_test_callback_data*)SDL_malloc(sizeof(hit_test_callback_data));
strcpy(callback->module, args[1]),
strcpy(callback->function, args[2]),
callback->lock = enif_mutex_create("hit_test_callback_lock");
callback->cond = enif_cond_create("hit_test_callback_cond");
callback->result = NO_RESULT;
SDL_SetWindowData(args[0], "hit_test_callback", callback);
}
enif_free(args[1]);
enif_free(args[2]);
if (SDL_SetWindowHitTest(args[0], &hit_test_callback, NULL)) {
SDL_SetWindowData(args[0], "hit_test_callback", NULL);
SDL_free(callback);
return sdl_error_tuple(env);
}
return atom_ok;
}
NIF_FUNCTION(set_window_hit_test)
{
void* window_res;
unsigned int module_len, function_len;
char *module = NULL, *function = NULL;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!enif_get_atom_length(env, argv[1], &module_len, ERL_NIF_LATIN1));
BADARG_IF(!enif_get_atom_length(env, argv[2], &function_len, ERL_NIF_LATIN1));
module = (char*)enif_alloc(module_len + 1);
if (!enif_get_atom(env, argv[1], module, module_len + 1, ERL_NIF_LATIN1))
goto set_window_hit_test_badarg;
function = (char*)enif_alloc(function_len + 1);
if (!enif_get_atom(env, argv[2], function, function_len + 1, ERL_NIF_LATIN1))
goto set_window_hit_test_badarg;
return nif_thread_call(env, thread_set_window_hit_test, 3,
NIF_RES_GET(Window, window_res), module, function);
set_window_hit_test_badarg:
enif_free(module);
enif_free(function);
return enif_make_badarg(env);
}
// set_window_hit_test_remove
NIF_CALL_HANDLER(thread_set_window_hit_test_remove)
{
hit_test_callback_data* callback;
// We execute the function unconditionally even if we know
// there is no callback set in order to best reproduce the
// behavior when the feature is unsupported.
if (SDL_SetWindowHitTest(args[0], NULL, NULL))
return sdl_error_tuple(env);
callback = SDL_GetWindowData(args[0], "hit_test_callback");
if (!callback)
return atom_ok;
// The callback we removed but just in case we check that
// there is no ongoing callback running before freeing memory.
enif_mutex_lock(callback->lock);
while (callback->result != NO_RESULT)
enif_cond_wait(callback->cond, callback->lock);
enif_mutex_unlock(callback->lock);
SDL_SetWindowData(args[0], "hit_test_callback", NULL);
SDL_free(callback);
return atom_ok;
}
NIF_FUNCTION(set_window_hit_test_remove)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_set_window_hit_test_remove, 1,
NIF_RES_GET(Window, window_res));
}
// set_window_hit_test_result
NIF_FUNCTION(set_window_hit_test_result)
{
void* window_res;
hit_test_callback_data* callback;
SDL_HitTestResult result;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
callback = SDL_GetWindowData(NIF_RES_GET(Window, window_res), "hit_test_callback");
enif_mutex_lock(callback->lock);
if (!atom_to_hit_test_result(env, argv[1], &result)) {
// An exception occurred inside the callback function or
// the user returned an invalid value. Not much we can do.
// Act as if the callback was disabled and make the callback
// process crash loudly.
callback->result = SDL_HITTEST_NORMAL;
enif_cond_signal(callback->cond);
enif_mutex_unlock(callback->lock);
return enif_make_badarg(env);
}
callback->result = result;
enif_cond_signal(callback->cond);
enif_mutex_unlock(callback->lock);
return atom_ok;
}
// set_window_icon
//
// We use a call here because we need the surface to exist until this call
// succeeds. If we didn't, a race condition might happen where the surface
// is GC before it is used in the main thread.
NIF_CALL_HANDLER(thread_set_window_icon)
{
SDL_SetWindowIcon(args[0], args[1]);
return atom_ok;
}
NIF_FUNCTION(set_window_icon)
{
void* window_res;
void* surface_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!enif_get_resource(env, argv[1], res_Surface, &surface_res));
return nif_thread_call(env, thread_set_window_icon, 2,
NIF_RES_GET(Window, window_res), NIF_RES_GET(Surface, surface_res));
}
// set_window_input_focus
NIF_CALL_HANDLER(thread_set_window_input_focus)
{
if (SDL_SetWindowInputFocus(args[0]))
return sdl_error_tuple(env);
return atom_ok;
}
NIF_FUNCTION(set_window_input_focus)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_call(env, thread_set_window_input_focus, 1,
NIF_RES_GET(Window, window_res));
}
// set_window_maximum_size
NIF_CAST_HANDLER(thread_set_window_maximum_size)
{
SDL_SetWindowMaximumSize(args[0], (long)args[1], (long)args[2]);
}
NIF_FUNCTION(set_window_maximum_size)
{
void* window_res;
int w, h;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!enif_get_int(env, argv[1], &w));
BADARG_IF(!enif_get_int(env, argv[2], &h));
return nif_thread_cast(env, thread_set_window_maximum_size, 3,
NIF_RES_GET(Window, window_res), w, h);
}
// set_window_minimum_size
NIF_CAST_HANDLER(thread_set_window_minimum_size)
{
SDL_SetWindowMinimumSize(args[0], (long)args[1], (long)args[2]);
}
NIF_FUNCTION(set_window_minimum_size)
{
void* window_res;
int w, h;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!enif_get_int(env, argv[1], &w));
BADARG_IF(!enif_get_int(env, argv[2], &h));
return nif_thread_cast(env, thread_set_window_minimum_size, 3,
NIF_RES_GET(Window, window_res), w, h);
}
// set_window_modal_for
NIF_CALL_HANDLER(thread_set_window_modal_for)
{
if (SDL_SetWindowModalFor(args[0], args[1]))
return sdl_error_tuple(env);
return atom_ok;
}
NIF_FUNCTION(set_window_modal_for)
{
void* modal_window_res;
void* parent_window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &modal_window_res));
BADARG_IF(!enif_get_resource(env, argv[1], res_Window, &parent_window_res));
return nif_thread_call(env, thread_set_window_modal_for, 2,
NIF_RES_GET(Window, modal_window_res),
NIF_RES_GET(Window, parent_window_res));
}
// set_window_opacity
NIF_CALL_HANDLER(thread_set_window_opacity)
{
int ret = SDL_SetWindowOpacity(args[0], *((double*)args[1]));
enif_free(args[1]);
if (ret != 0)
return sdl_error_tuple(env);
return atom_ok;
}
NIF_FUNCTION(set_window_opacity)
{
void* window_res;
double *opacityPtr;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
opacityPtr = (double*)enif_alloc(sizeof(double));
if (!enif_get_double(env, argv[1], opacityPtr)) {
enif_free(opacityPtr);
return enif_make_badarg(env);
}
return nif_thread_call(env, thread_set_window_opacity, 2,
NIF_RES_GET(Window, window_res), opacityPtr);
}
// set_window_position
NIF_CAST_HANDLER(thread_set_window_position)
{
SDL_SetWindowPosition(args[0], (long)args[1], (long)args[2]);
}
NIF_FUNCTION(set_window_position)
{
void* window_res;
int x, y;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!enif_get_int(env, argv[1], &x));
BADARG_IF(!enif_get_int(env, argv[2], &y));
return nif_thread_cast(env, thread_set_window_position, 3,
NIF_RES_GET(Window, window_res), x, y);
}
// set_window_resizable
NIF_CAST_HANDLER(thread_set_window_resizable)
{
SDL_SetWindowResizable(args[0], (long)args[1]);
}
NIF_FUNCTION(set_window_resizable)
{
void* window_res;
SDL_bool b;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!atom_to_bool(env, argv[1], &b));
return nif_thread_cast(env, thread_set_window_resizable, 2,
NIF_RES_GET(Window, window_res), b);
}
// set_window_size
NIF_CAST_HANDLER(thread_set_window_size)
{
SDL_SetWindowSize(args[0], (long)args[1], (long)args[2]);
}
NIF_FUNCTION(set_window_size)
{
void* window_res;
int w, h;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!enif_get_int(env, argv[1], &w));
BADARG_IF(!enif_get_int(env, argv[2], &h));
return nif_thread_cast(env, thread_set_window_size, 3,
NIF_RES_GET(Window, window_res), w, h);
}
// set_window_title
NIF_CAST_HANDLER(thread_set_window_title)
{
SDL_SetWindowTitle(args[0], args[1]);
enif_free(args[1]);
}
NIF_FUNCTION(set_window_title)
{
void* window_res;
ErlNifBinary bin;
char* title;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
BADARG_IF(!enif_inspect_binary(env, argv[1], &bin));
title = enif_alloc(bin.size + 1);
memcpy(title, bin.data, bin.size);
title[bin.size] = '\0';
return nif_thread_cast(env, thread_set_window_title, 2,
NIF_RES_GET(Window, window_res), title);
}
// show_window
NIF_CAST_HANDLER(thread_show_window)
{
SDL_ShowWindow(args[0]);
}
NIF_FUNCTION(show_window)
{
void* window_res;
BADARG_IF(!enif_get_resource(env, argv[0], res_Window, &window_res));
return nif_thread_cast(env, thread_show_window, 1,
NIF_RES_GET(Window, window_res));
}