wip: move gfx to gfxhook, some borderless window stuff

gfxhook/gfx.c

@@ -0,0 +1,50 @@
+#include <windows.h>
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include "gfxhook/config.h"
+#include "gfxhook/gfx.h"
+
+#include "hook/table.h"
+
+#include "util/dprintf.h"
+
+typedef BOOL (WINAPI *ShowWindow_t)(HWND hWnd, int nCmdShow);
+
+static BOOL WINAPI hook_ShowWindow(HWND hWnd, int nCmdShow);
+
+static struct gfx_config gfx_config;
+static ShowWindow_t next_ShowWindow;
+
+static const struct hook_symbol gfx_hooks[] = {
+    {
+        .name = "ShowWindow",
+        .patch = hook_ShowWindow,
+        .link = (void **) &next_ShowWindow,
+    },
+};
+
+void gfx_hook_init(const struct gfx_config *cfg, HINSTANCE self)
+{
+    assert(cfg != NULL);
+
+    if (!cfg->enable) {
+        return;
+    }
+
+    memcpy(&gfx_config, cfg, sizeof(*cfg));
+    hook_table_apply(NULL, "user32.dll", gfx_hooks, _countof(gfx_hooks));
+}
+
+static BOOL WINAPI hook_ShowWindow(HWND hWnd, int nCmdShow)
+{
+    dprintf("Gfx: ShowWindow hook hit\n");
+
+    if (!gfx_config.framed && nCmdShow == SW_RESTORE) {
+        nCmdShow = SW_SHOW;
+    }
+
+    return next_ShowWindow(hWnd, nCmdShow);
+}