- Change display options to be passed down from the window, and have the imageselector pass a struct back that contains image metadata

- Added ImageDisplayOptions_t to control user controllable options for how we show an image (aspect filtering, stretching)
- Added ImageDetails_t to encapsulate image metadata along with its image options

src/imagestructs.h

@@ -0,0 +1,28 @@
+#ifndef IMAGESTRUCTS_H
+#define IMAGESTRUCTS_H
+
+#include <string>
+
+// possible aspect ratios of an image
+enum EImageAspect { EImageAspect_Landscape = 0, EImageAspect_Portrait, EImageAspect_Any };
+
+// options to consider when displaying an image
+struct ImageDisplayOptions_t
+{
+    EImageAspect onlyAspect = EImageAspect_Any;
+    bool fitAspectAxisToWindow = false;
+};
+
+// details of a particular image
+struct ImageDetails_t
+{
+    int width = 0;
+    int height = 0;
+    int rotation = 0;
+    EImageAspect aspect = EImageAspect_Any;
+    std::string filename;
+    ImageDisplayOptions_t options;
+};
+
+
+#endif // IMAGESTRUCTS_H