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#include "window.h"
int honey_window_info_ref = LUA_NOREF;
int honey_window_resize_callback_ref = LUA_NOREF;
int honey_window_resize_callback_data_ref = LUA_NOREF;
static void honey_glfw_window_resize_callback(honey_window window,
int width, int height)
{
lua_State* L = glfwGetWindowUserPointer(window);
int callback = honey_window_resize_callback_ref;
int data = honey_window_resize_callback_data_ref;
if (callback == LUA_NOREF)
return;
lua_rawgeti(L, LUA_REGISTRYINDEX, callback);
lua_pushinteger(L, width);
lua_pushinteger(L, height);
if (data == LUA_NOREF || data == LUA_REFNIL)
lua_pushnil(L);
else
lua_rawgeti(L, LUA_REGISTRYINDEX, data);
honey_lua_pcall(L, 3, 0);
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
bool honey_setup_window(lua_State* L)
{
honey_window_information* info = lua_newuserdata(L, sizeof(honey_window_information));
honey_window_info_ref = luaL_ref(L, LUA_REGISTRYINDEX);
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
info->window = glfwCreateWindow(HONEY_WINDOW_DEFAULT_WIDTH,
HONEY_WINDOW_DEFAULT_HEIGHT,
"honey", NULL, NULL);
info->width = HONEY_WINDOW_DEFAULT_WIDTH;
info->height = HONEY_WINDOW_DEFAULT_WIDTH;
info->fullscreen = false;
if (info->window == NULL) {
fprintf(stderr, "[honey] ERROR: failed to create window!\n");
glfwTerminate();
return false;
}
/* store lua state in window, so it's accessible from GLFW callbacks */
glfwSetWindowUserPointer(info->window, L);
glfwMakeContextCurrent(info->window);
if (!gladLoadGLLoader((GLADloadproc) glfwGetProcAddress)) {
fprintf(stderr, "[honey] ERROR: failed to initialize GLAD!\n");
glfwTerminate();
return false;
}
// Enable blending
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glfwSetWindowSizeCallback(info->window, honey_glfw_window_resize_callback);
honey_lua_element window_elements[] = {
{ "set_fullscreen", HONEY_FUNC, { .function = honey_window_set_fullscreen } },
{ "set_title", HONEY_FUNC, { .function = honey_window_set_title } },
{ "get_size", HONEY_FUNC, { .function = honey_window_get_size } },
{ "set_size", HONEY_FUNC, { .function = honey_window_set_size } },
{ "resize_bind", HONEY_FUNC, { .function = honey_window_resize_bind } },
{ "resize_unbind", HONEY_FUNC, { .function = honey_window_resize_unbind } },
};
honey_lua_create_table(L, window_elements, 6);
return true;
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
int honey_window_set_fullscreen(lua_State* L)
{
if (!honey_lua_validate_types(L, 1, HONEY_BOOL))
lua_error(L);
bool fullscreen = lua_toboolean(L, 1);
lua_rawgeti(L, LUA_REGISTRYINDEX, honey_window_info_ref);
honey_window_information* info = lua_touserdata(L, -1);
if (fullscreen) {
glfwGetWindowSize(info->window, &(info->width), &(info->height));
GLFWmonitor* monitor = glfwGetPrimaryMonitor();
const GLFWvidmode* mode = glfwGetVideoMode(monitor);
glfwSetWindowMonitor(info->window, monitor, 0, 0, mode->width, mode->height, mode->refreshRate);
info->fullscreen = true;
}
else {
glfwSetWindowMonitor(info->window, NULL, 20, 20, info->width, info->height, 0);
info->fullscreen = false;
}
return 0;
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
int honey_window_set_title(lua_State* L)
{
if (!honey_lua_validate_types(L, 1, HONEY_STRING))
lua_error(L);
const char* title = lua_tostring(L, 1);
lua_rawgeti(L, LUA_REGISTRYINDEX, honey_window_info_ref);
honey_window_information* info = lua_touserdata(L, -1);
glfwSetWindowTitle(info->window, title);
return 0;
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
int honey_window_get_size(lua_State* L)
{
lua_rawgeti(L, LUA_REGISTRYINDEX, honey_window_info_ref);
honey_window_information* info = lua_touserdata(L, -1);
int width, height;
glfwGetWindowSize(info->window, &width, &height);
lua_pushinteger(L, width);
lua_pushinteger(L, height);
return 2;
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
int honey_window_set_size(lua_State* L)
{
if (!honey_lua_validate_types(L, 2, HONEY_INT, HONEY_INT))
lua_error(L);
int width = lua_tointeger(L, 1);
int height = lua_tointeger(L, 2);
lua_rawgeti(L, LUA_REGISTRYINDEX, honey_window_info_ref);
honey_window_information* info = lua_touserdata(L, -1);
glfwSetWindowSize(info->window, width, height);
return 0;
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
int honey_window_resize_bind(lua_State* L)
{
if (!honey_lua_validate_types(L, 2, HONEY_FUNC, HONEY_ANY))
lua_error(L);
lua_pushvalue(L, 1);
honey_window_resize_callback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
lua_pushvalue(L, 2);
honey_window_resize_callback_data_ref = luaL_ref(L, LUA_REGISTRYINDEX);
return 0;
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
int honey_window_resize_unbind(lua_State* L)
{
honey_window_resize_callback_ref = LUA_NOREF;
honey_window_resize_callback_data_ref = LUA_NOREF;
return 0;
}
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