--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/libmlk-core/core/window.c	Fri Oct 01 20:30:00 2021 +0200
@@ -0,0 +1,117 @@
+/*
+ * window.c -- basic window management
+ *
+ * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr>
+ *
+ * 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 <assert.h>
+#include <string.h>
+
+#include <SDL.h>
+
+#include "error.h"
+#include "util.h"
+#include "window.h"
+#include "window_p.h"
+
+static struct window_handle handle = {
+	.win = NULL,
+	.renderer = NULL
+};
+
+static SDL_Cursor *cursors[WINDOW_CURSOR_LAST];
+
+struct window window = {
+	.handle = &handle
+};
+
+static void
+load_cursors(void)
+{
+	cursors[WINDOW_CURSOR_ARROW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
+	cursors[WINDOW_CURSOR_EDIT] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
+	cursors[WINDOW_CURSOR_WAIT] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_WAIT);
+	cursors[WINDOW_CURSOR_CROSSHAIR] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_CROSSHAIR);
+	cursors[WINDOW_CURSOR_SIZE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
+	cursors[WINDOW_CURSOR_NO] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO);
+	cursors[WINDOW_CURSOR_HAND] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
+}
+
+static void
+load_framerate(void)
+{
+	SDL_DisplayMode mode;
+
+	if (SDL_GetWindowDisplayMode(handle.win, &mode) == 0)
+		window.framerate = mode.refresh_rate;
+}
+
+static void
+finish_cursors(void)
+{
+	for (size_t i = 0; i < UTIL_SIZE(cursors); ++i)
+		if (cursors[i])
+			SDL_FreeCursor(cursors[i]);
+}
+
+static int
+load_window(const char *title, unsigned int w, unsigned int h)
+{
+	return (handle.win = SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, w, h, 0)) != NULL;
+}
+
+static int
+load_renderer(void)
+{
+	return (handle.renderer = SDL_CreateRenderer(handle.win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC)) != NULL;
+}
+
+int
+window_open(const char *title, unsigned int w, unsigned int h)
+{
+	assert(title);
+
+	if (!load_window(title, w, h) || !load_renderer())
+		return errorf("%s", SDL_GetError());
+
+	window.w = w;
+	window.h = h;
+
+	load_framerate();
+	load_cursors();
+
+	return 0;
+}
+
+void
+window_set_cursor(enum window_cursor cursor)
+{
+	assert(cursor < WINDOW_CURSOR_LAST);
+
+	SDL_SetCursor(cursors[cursor]);
+}
+
+void
+window_finish(void)
+{
+	if (handle.renderer)
+		SDL_DestroyRenderer(handle.renderer);
+	if (handle.win)
+		SDL_DestroyWindow(handle.win);
+
+	finish_cursors();
+
+	memset(&handle, 0, sizeof (handle));
+}