1 files changed, 52 insertions, 0 deletions
diff --git a/wx+/image_holder.h b/wx+/image_holder.h
new file mode 100755
index 00000000..6804d5fc
--- /dev/null
+++ b/wx+/image_holder.h
@@ -0,0 +1,52 @@
+// *****************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under    *
+// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0          *
+// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
+// *****************************************************************************
+
+#ifndef IMAGE_HOLDER_H_284578426342567457
+#define IMAGE_HOLDER_H_284578426342567457
+
+#include <memory>
+
+//used by fs/abstract.h => check carefully before adding dependencies!
+//DO NOT add any wx/wx+ includes!
+
+namespace zen
+{
+struct ImageHolder //prepare conversion to wxImage as much as possible while staying thread-safe (in contrast to wxIcon/wxBitmap)
+{
+    ImageHolder() {}
+
+    ImageHolder(int w, int h, bool withAlpha) : //init with allocated memory
+        width_(w), height_(h),
+        rgb_(static_cast<unsigned char*>(::malloc(w * h * 3))),
+        alpha_(withAlpha ? static_cast<unsigned char*>(::malloc(w * h)) : nullptr) {}
+
+    ImageHolder           (ImageHolder&& tmp) = default; //
+    ImageHolder& operator=(ImageHolder&& tmp) = default; //move semantics only!
+    ImageHolder           (const ImageHolder&) = delete; //
+    ImageHolder& operator=(const ImageHolder&) = delete; //
+
+    explicit operator bool() const { return rgb_.get() != nullptr; }
+
+    int getWidth () const { return width_;  }
+    int getHeight() const { return height_; }
+
+    unsigned char* getRgb  () { return rgb_  .get(); }
+    unsigned char* getAlpha() { return alpha_.get(); }
+
+    unsigned char* releaseRgb  () { return rgb_  .release(); }
+    unsigned char* releaseAlpha() { return alpha_.release(); }
+
+    struct CLibFree { void operator()(unsigned char* p) const { ::free(p); } }; //use malloc/free to allow direct move into wxImage!
+
+private:
+    int width_  = 0;
+    int height_ = 0;
+    std::unique_ptr<unsigned char, CLibFree> rgb_;   //optional
+    std::unique_ptr<unsigned char, CLibFree> alpha_; //
+};
+}
+
+#endif //IMAGE_HOLDER_H_284578426342567457