1 files changed, 154 insertions, 0 deletions
diff --git a/plug-ins/screenshot/screenshot-win32-magnification-api.h b/plug-ins/screenshot/screenshot-win32-magnification-api.h
new file mode 100644
index 0000000..ff3a824
--- /dev/null
+++ b/plug-ins/screenshot/screenshot-win32-magnification-api.h
@@ -0,0 +1,154 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * Magnification-win32.h
+ * Copyright (C) 2018 Gil Eliyahu
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <winapifamily.h>
+
+#pragma region Desktop Family
+#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+
+#ifndef __wincodec_h__
+#include <wincodec.h>
+#endif
+
+#define WC_MAGNIFIERA             "Magnifier"
+#define WC_MAGNIFIERW             L"Magnifier"
+
+#ifdef UNICODE
+#define WC_MAGNIFIER              WC_MAGNIFIERW
+#else
+#define WC_MAGNIFIER              WC_MAGNIFIERA
+#endif
+
+#else
+#define WC_MAGNIFIER              "Magnifier"
+#endif
+
+/* Magnifier Window Styles */
+#define MS_SHOWMAGNIFIEDCURSOR      0x0001L
+#define MS_CLIPAROUNDCURSOR         0x0002L
+#define MS_INVERTCOLORS             0x0004L
+
+
+/* Filter Modes */
+#define MW_FILTERMODE_EXCLUDE   0
+#define MW_FILTERMODE_INCLUDE   1
+
+
+/* Structures */
+typedef struct tagMAGTRANSFORM
+{
+  float v[3][3];
+} MAGTRANSFORM, *PMAGTRANSFORM;
+
+typedef struct tagMAGIMAGEHEADER
+{
+  UINT width;
+  UINT height;
+  WICPixelFormatGUID format;
+  UINT stride;
+  UINT offset;
+  SIZE_T cbSize;
+} MAGIMAGEHEADER, *PMAGIMAGEHEADER;
+
+typedef struct tagMAGCOLOREFFECT
+{
+  float transform[5][5];
+} MAGCOLOREFFECT, *PMAGCOLOREFFECT;
+
+
+/* Proptypes for the public functions */
+typedef BOOL(WINAPI* MAGINITIALIZE)();
+MAGINITIALIZE MagInitialize;
+
+typedef BOOL(WINAPI* MAGUNINITIALIZE)();
+MAGUNINITIALIZE MagUninitialize;
+
+typedef BOOL(WINAPI* MAGSETWINDOWSOURCE)(HWND, RECT);
+MAGSETWINDOWSOURCE MagSetWindowSource;
+
+typedef BOOL(WINAPI* MAGSETWINDOWFILTERLIST)(HWND, DWORD, int, HWND*);
+MAGSETWINDOWFILTERLIST MagSetWindowFilterList;
+
+typedef BOOL(CALLBACK* MagImageScalingCallback)(HWND hwnd, void * srcdata, MAGIMAGEHEADER srcheader, void * destdata, MAGIMAGEHEADER destheader, RECT unclipped, RECT clipped, HRGN dirty);
+
+typedef BOOL(WINAPI* MAGSETIMAGESCALINGCALLBACK)(HWND, MagImageScalingCallback);
+MAGSETIMAGESCALINGCALLBACK MagSetImageScalingCallback;
+
+
+/* Library DLL */
+static HINSTANCE magnificationLibrary;
+
+
+void UnLoadMagnificationLibrary(void);
+BOOL LoadMagnificationLibrary(void);
+
+
+void UnLoadMagnificationLibrary()
+{
+  if (!magnificationLibrary) return;
+  FreeLibrary(magnificationLibrary);
+}
+
+
+
+BOOL LoadMagnificationLibrary()
+{
+  if (magnificationLibrary) return TRUE;
+
+  magnificationLibrary = LoadLibrary("Magnification");
+  if (!magnificationLibrary) return FALSE;
+
+  MagInitialize = (MAGINITIALIZE)GetProcAddress(magnificationLibrary,"MagInitialize");
+  if (!MagInitialize)
+    {
+      UnLoadMagnificationLibrary();
+      return FALSE;
+    }
+
+  MagUninitialize = (MAGUNINITIALIZE)GetProcAddress(magnificationLibrary, "MagUninitialize");
+  if (!MagUninitialize)
+    {
+      UnLoadMagnificationLibrary();
+      return FALSE;
+    }
+
+  MagSetWindowSource = (MAGSETWINDOWSOURCE)GetProcAddress(magnificationLibrary, "MagSetWindowSource");
+  if (!MagSetWindowSource)
+    {
+      UnLoadMagnificationLibrary();
+      return FALSE;
+    }
+
+  MagSetWindowFilterList = (MAGSETWINDOWFILTERLIST)GetProcAddress(magnificationLibrary, "MagSetWindowFilterList");
+  if (!MagSetWindowFilterList)
+    {
+      UnLoadMagnificationLibrary();
+      return FALSE;
+    }
+
+  MagSetImageScalingCallback = (MAGSETIMAGESCALINGCALLBACK)GetProcAddress(magnificationLibrary, "MagSetImageScalingCallback");
+  if (!MagSetImageScalingCallback)
+    {
+      UnLoadMagnificationLibrary();
+      return FALSE;
+    }
+
+  return TRUE;
+}