Add IImageFormat interface

Author: adazem009

CMakeLists.txt

@@ -48,6 +48,7 @@ target_sources(scratchcpp
     include/scratchcpp/sprite.h
     include/scratchcpp/itimer.h
     include/scratchcpp/keyevent.h
+    include/scratchcpp/iimageformat.h
 )
 
 add_library(zip SHARED

include/scratchcpp/iimageformat.h

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "global.h"
+
+namespace libscratchcpp
+{
+
+/*! A typedef for unsigned int. Holds the RGBA values. */
+using Rgb = unsigned int;
+
+/*! \brief The IImageFormat class is an interface for image format implementation. */
+class LIBSCRATCHCPP_EXPORT IImageFormat
+{
+    public:
+        virtual ~IImageFormat() { }
+
+        /*! Sets the image data (buffer). */
+        virtual void setData(const char *data) = 0;
+
+        /*! Returns the width of the image. */
+        virtual unsigned int width() const = 0;
+
+        /*! Returns the height of the image. */
+        virtual unsigned int height() const = 0;
+
+        /*! Returns the color at the given pixel. */
+        virtual Rgb colorAt(unsigned int x, unsigned int y, double scale = 1) const = 0;
+};
+
+} // namespace libscratchcpp