1 files changed, 52 insertions, 0 deletions
diff --git a/include/dchat/Gif.hpp b/include/dchat/Gif.hpp
new file mode 100644
index 0000000..f97ff2f
--- /dev/null
+++ b/include/dchat/Gif.hpp
@@ -0,0 +1,52 @@
+#pragma once
+
+#include "StringView.hpp"
+#include "Vec2.hpp"
+#include "Color.hpp"
+#include "Clock.hpp"
+#include <boost/filesystem/path.hpp>
+#include <stdexcept>
+extern "C"
+{
+#include <libnsgif.h>
+}
+
+namespace dchat
+{
+    class GifLoadException : public std::runtime_error
+    {
+    public:
+        GifLoadException(const std::string &errMsg) : std::runtime_error(errMsg) {}
+    };
+    
+    class Gif
+    {
+    public:
+        // Throws GifLoadException on error
+        Gif(const boost::filesystem::path &filepath);
+        Gif(StringView fileContent);
+        virtual ~Gif();
+        
+        Vec2u getSize() const;
+        void update();
+        
+        static bool isDataGif(const StringView &data);
+    protected:
+        // Return false if texture creation failed
+        virtual bool createTexture(int width, int height) = 0;
+        virtual void setPosition(const Vec2f &position) = 0;
+        virtual Vec2f getPosition() const = 0;
+        virtual void setScale(const Vec2f &scale) = 0;
+        virtual void setColor(Color color) = 0;
+        // Size of texture data is same as the size that the texture was created with (also same size returned by @getSize function)
+        virtual void updateTexture(void *textureData) = 0;
+    private:
+        void init();
+    private:
+        gif_animation gif;
+        StringView fileContent;
+        unsigned int currentFrame;
+        double timeElapsedCs;
+        Clock frameTimer;
+    };
+}