Initial commit

src/main.c

@@ -0,0 +1,86 @@
+#include <stdio.h>
+#include <SDL2/SDL.h>
+#include "api/api.h"
+#include "renderer.h"
+#ifdef _WIN32
+  #include <windows.h>
+#endif
+
+
+SDL_Window *window;
+
+int main(int argc, char **argv) {
+#ifdef _WIN32
+  HINSTANCE lib = LoadLibrary("user32.dll");
+  int (*SetProcessDPIAware)() = (void*) GetProcAddress(lib, "SetProcessDPIAware");
+  SetProcessDPIAware();
+#endif
+
+  SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS);
+  SDL_EnableScreenSaver();
+  SDL_EventState(SDL_DROPFILE, SDL_ENABLE);
+  atexit(SDL_Quit);
+#if SDL_VERSION_ATLEAST(2, 0, 5)
+  SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");
+#endif
+
+  SDL_DisplayMode dm;
+  SDL_GetCurrentDisplayMode(0, &dm);
+
+  window = SDL_CreateWindow(
+    "", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
+    dm.w * 0.8, dm.h * 0.8, SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+  ren_init(window);
+
+
+  lua_State *L = luaL_newstate();
+  luaL_openlibs(L);
+  api_load_libs(L);
+
+
+  lua_newtable(L);
+  for (int i = 0; i < argc; i++) {
+    lua_pushstring(L, argv[i]);
+    lua_rawseti(L, -2, i + 1);
+  }
+  lua_setglobal(L, "_ARGS");
+
+
+  float dpi;
+  SDL_GetDisplayDPI(0, NULL, &dpi, NULL);
+#if _WIN32
+  lua_pushnumber(L, dpi / 96.0);
+#elif __APPLE__
+  lua_pushnumber(L, dpi / 72.0);
+#else
+  lua_pushnumber(L, 1.0);
+#endif
+  lua_setglobal(L, "_SCALE");
+
+
+  (void) luaL_dostring(L,
+    "local core\n"
+    "xpcall(function()\n"
+    "  _SCALE = tonumber(os.getenv(\"LITE_SCALE\")) or _SCALE\n"
+    "  _PATHSEP = package.config:sub(1, 1)\n"
+    "  _EXEDIR = _ARGS[1]:match('(.*)[/\\\\].*$')\n"
+    "  package.path = _EXEDIR .. '/data/?.lua;' .. package.path\n"
+    "  package.path = _EXEDIR .. '/data/?/init.lua;' .. package.path\n"
+    "  core = require('core')\n"
+    "  core.init()\n"
+    "  core.run()\n"
+    "end, function(err)\n"
+    "  print('Error: ' .. tostring(err))\n"
+    "  print(debug.traceback(nil, 2))\n"
+    "  if core and core.on_error then\n"
+    "    pcall(core.on_error, err)\n"
+    "  end\n"
+    "  os.exit(1)\n"
+    "end)");
+
+
+  lua_close(L);
+  SDL_DestroyWindow(window);
+
+  return EXIT_SUCCESS;
+}