add oversampler

oversampling/WDL/win32_hidpi.h

@@ -0,0 +1,113 @@
+#include "wdltypes.h"
+
+#ifdef _WIN32
+  #ifndef SWP__NOMOVETHENSIZE
+  #define SWP__NOMOVETHENSIZE (1<<30)
+  #endif
+
+#ifdef WDL_WIN32_HIDPI_IMPL
+#ifndef _WDL_WIN32_HIDPI_H_IMPL
+#define _WDL_WIN32_HIDPI_H_IMPL
+
+WDL_WIN32_HIDPI_IMPL void *_WDL_dpi_func(void *p)
+{
+  static void *(WINAPI *__SetThreadDpiAwarenessContext)(void *);
+  if (!__SetThreadDpiAwarenessContext)
+  {
+    HINSTANCE huser32 = LoadLibrary("user32.dll");
+    if (huser32) *(void **)&__SetThreadDpiAwarenessContext = GetProcAddress(huser32,"SetThreadDpiAwarenessContext");
+    if (!__SetThreadDpiAwarenessContext) *(UINT_PTR *)&__SetThreadDpiAwarenessContext = 1;
+  }
+  return (UINT_PTR)__SetThreadDpiAwarenessContext > 1 ? __SetThreadDpiAwarenessContext(p) : NULL;
+}
+
+WDL_WIN32_HIDPI_IMPL void WDL_mmSetWindowPos(HWND hwnd, HWND hwndAfter, int x, int y, int w, int h, UINT f)
+{
+#ifdef SetWindowPos
+#undef SetWindowPos
+#endif
+  static char init;
+
+  if (!init)
+  {
+    init = 1;
+    HINSTANCE h = GetModuleHandle("user32.dll");
+    if (h)
+    {
+      BOOL (WINAPI *__AreDpiAwarenessContextsEqual)(void *, void *);
+      void * (WINAPI *__GetThreadDpiAwarenessContext )();
+      *(void **)&__GetThreadDpiAwarenessContext = GetProcAddress(h,"GetThreadDpiAwarenessContext");
+      *(void **)&__AreDpiAwarenessContextsEqual = GetProcAddress(h,"AreDpiAwarenessContextsEqual");
+      if (__GetThreadDpiAwarenessContext && __AreDpiAwarenessContextsEqual)
+      {
+        if (__AreDpiAwarenessContextsEqual(__GetThreadDpiAwarenessContext(),(void*)(INT_PTR)-4))
+          init = 2;
+      }
+    }
+  }
+
+  if (WDL_NOT_NORMALLY(hwnd == NULL)) return;
+
+  if (init == 2 &&
+    !(f&(SWP_NOMOVE|SWP_NOSIZE|SWP__NOMOVETHENSIZE|SWP_ASYNCWINDOWPOS)) &&
+    !(GetWindowLong(hwnd,GWL_STYLE)&WS_CHILD))
+  {
+    SetWindowPos(hwnd,NULL,x,y,0,0,SWP_NOREDRAW|SWP_NOSIZE|SWP_NOZORDER|SWP_NOACTIVATE|SWP_DEFERERASE);
+    f |= SWP_NOMOVE;
+  }
+  SetWindowPos(hwnd,hwndAfter,x,y,w,h,f&~SWP__NOMOVETHENSIZE);
+#define SetWindowPos WDL_mmSetWindowPos
+}
+
+
+#endif // end of _WDL_WIN32_HIDPI_H_IMPL
+#else // if !WDL_WIN32_HIDPI_IMPL
+void WDL_mmSetWindowPos(HWND hwnd, HWND hwndAfter, int x, int y, int w, int h, UINT f);
+void *_WDL_dpi_func(void *p);
+#ifdef SetWindowPos
+#undef SetWindowPos
+#endif
+#define SetWindowPos WDL_mmSetWindowPos
+#endif
+
+#else // !_WIN32
+  #ifndef SWP__NOMOVETHENSIZE
+  #define SWP__NOMOVETHENSIZE 0
+  #endif
+#endif
+
+#ifndef _WDL_WIN32_HIDPI_H_
+#define _WDL_WIN32_HIDPI_H_
+
+static WDL_STATICFUNC_UNUSED void *WDL_dpi_enter_aware(int mode) // -1 = DPI_AWARENESS_CONTEXT_UNAWARE, -2=aware, -3=mm aware, -4=mmaware2, -5=gdiscaled
+{
+#ifdef _WIN32
+  return _WDL_dpi_func((void *)(INT_PTR)mode);
+#else
+  return NULL;
+#endif
+}
+static WDL_STATICFUNC_UNUSED void WDL_dpi_leave_aware(void **p)
+{
+#ifdef _WIN32
+  if (p)
+  {
+    if (*p) _WDL_dpi_func(*p);
+    *p = NULL;
+  }
+#endif
+}
+
+#ifdef __cplusplus
+struct WDL_dpi_aware_scope {
+#ifdef _WIN32
+  WDL_dpi_aware_scope(int mode=-1) { c = mode ? WDL_dpi_enter_aware(mode) : NULL; }
+  ~WDL_dpi_aware_scope() { if (c) WDL_dpi_leave_aware(&c); }
+  void *c;
+#else
+  WDL_dpi_aware_scope() { }
+#endif
+};
+#endif
+
+#endif