init view abstractions

lib/imaging/PixelariumImage.hpp

@@ -14,8 +14,12 @@ class PixelariumImage
 
     // get back the defaults
     PixelariumImage() = default;
-    // we cannot copy an Image since this conflicts with the _img field
-    PixelariumImage(const PixelariumImage& other) = delete;
+    PixelariumImage(const PixelariumImage& other)
+    {
+        // be ware!!
+        // we make a copy of the image data here!
+        img_ = std::make_unique<cv::Mat>(*other.img_);
+    };
     PixelariumImage(PixelariumImage&& other) noexcept
         : img_(std::move(other.img_)) {}
     // requires a copy ctor which we don't have

lib/resources/resource.hpp

@@ -28,6 +28,7 @@ class IResourcePool
     virtual bool UpdateResource(size_t id, std::unique_ptr<R> res) = 0;
     virtual bool DeleteResource(size_t id) = 0;
     virtual void EnumerateResources(const std::function<void(size_t, const R&)>& func) = 0;
+    virtual size_t GetTotalSize() const = 0;
 };
 
 // Now with the =GetResource= method, I do not want to transfer ownership to the caller of that method. The ownership
@@ -52,6 +53,7 @@ class ImageResourcePool : public IResourcePool<imaging::PixelariumImage>
 
     void EnumerateResources(const std::function<void(size_t, const imaging::PixelariumImage&)>& func) override;
 
+    size_t GetTotalSize() const override { return resources_.size();}
    private:
     std::unordered_map<size_t, std::unique_ptr<imaging::PixelariumImage>> resources_;
 };