SDL window open

src/main.c

@@ -0,0 +1,80 @@
+#define SDL_MAIN_USE_CALLBACKS 1
+#include <stdlib.h>
+#include <SDL3/SDL.h>
+#include <SDL3/SDL_main.h>
+#include <glib-2.0/glib.h>
+
+#include "util.h"
+
+SDL_Window *sdl_window;
+SDL_Renderer *sdl_renderer;
+
+SDL_AppResult
+SDL_AppInit (void **appstate, int argc, char **argv)
+{
+  UNUSED (appstate, argc, argv);
+
+  setenv ("GIO_USE_VFS", "local", 1);
+  setenv ("GSETTINGS_BACKEND", "memory", 1);
+  
+#ifdef DEBUG
+  setenv ("G_MESSAGES_DEBUG", "all", 1);
+#endif
+  
+  SDL_SetAppMetadata ("LibreFront", "0.1",
+		      "https://git.cfpi-fpsi.eu:8443/chopin-interactive/librefront");
+
+  if (!SDL_Init (SDL_INIT_VIDEO))
+    {
+      g_error ("Couldn't initialize SDL: %s", SDL_GetError ());
+    }
+
+  sdl_window = SDL_CreateWindow ("LibreFront", 800, 600, SDL_WINDOW_RESIZABLE);
+
+  if (!sdl_window)
+    {
+      g_error ("Couldn't create window: %s", SDL_GetError ());
+    }
+
+  sdl_renderer = SDL_CreateRenderer (sdl_window, NULL);
+
+  if (!sdl_renderer)
+    {
+      g_error ("Couldn't create renderer: %s", SDL_GetError ());
+    }
+  
+  return SDL_APP_CONTINUE;
+}
+
+SDL_AppResult
+SDL_AppEvent (void *appstate, SDL_Event *event)
+{
+  UNUSED (appstate);
+  
+  if (event->type == SDL_EVENT_QUIT)
+    {
+      return SDL_APP_SUCCESS;
+    }
+
+  return SDL_APP_CONTINUE;
+}
+
+SDL_AppResult
+SDL_AppIterate (void *appstate)
+{
+  UNUSED (appstate);
+
+  SDL_RenderClear (sdl_renderer);
+  SDL_RenderPresent (sdl_renderer);
+  
+  return SDL_APP_CONTINUE;
+}
+
+void
+SDL_AppQuit (void *appstate, SDL_AppResult result)
+{
+  UNUSED (appstate, result);
+
+  SDL_DestroyRenderer (sdl_renderer);
+  SDL_DestroyWindow (sdl_window);
+}

src/util.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#define UNUSED(...)                   (UNUSED_1 (__VA_ARGS__, 0))
+#define UNUSED_1(arg, ...) (void) arg, UNUSED_2 (__VA_ARGS__, 0)
+#define UNUSED_2(arg, ...) (void) arg, UNUSED_3 (__VA_ARGS__, 0)
+#define UNUSED_3(arg, ...) (void) arg
+
+/*
+
+  GLib log levels:
+
+  g_debug
+  g_info
+  g_message
+  g_warning
+  g_critical
+  g_error
+
+ */