EmscriptenAsyncCubeTextureLoad.h

// Copyright eeGeo Ltd (2012-2014), All Rights Reserved

#pragma once

#include "IAsyncTextureLoad.h"
#include "Helpers.h"
#include "Types.h"
#include "GLHelpers.h"
#include "ICallback.h"
#include "AsyncTexturing.h"
#include <string>
#include <vector>

namespace Eegeo
{
    namespace Emscripten
    {
        class EmscriptenAsyncCubeTextureLoad : public Rendering::AsyncTexturing::IAsyncTextureLoad
        {
            const Helpers::ICallback1<const Eegeo::Rendering::AsyncTexturing::AsyncTextureLoadResult>& m_completionCallback;
            std::vector<const std::vector<Byte>*> m_cubeFaceBuffers;
            void* m_pUserData;
            GLuint m_textureId;
            bool m_cancelled;
            bool m_started;
            int m_mapId;
            bool m_mapExists;

            EmscriptenAsyncCubeTextureLoad(
                Helpers::ITextureFileLoader& textureLoader,
                const Helpers::ICallback1<const Rendering::AsyncTexturing::AsyncTextureLoadResult>& completionCallback,
                const std::vector<const std::vector<Byte>*>& cubeFaceBuffers,
                void* pUserData,
                int mapId);

            ~EmscriptenAsyncCubeTextureLoad();
            
        public:

            static EmscriptenAsyncCubeTextureLoad& Build(
                Helpers::ITextureFileLoader& textureLoader,
                const Helpers::ICallback1<const Rendering::AsyncTexturing::AsyncTextureLoadResult>& completionCallback,
                const std::vector<const std::vector<Byte>*>& cubeFaceBuffers,
                void* pUserData,
                int mapId);

            virtual void Begin();

            virtual void Cancel();

            void BeginAsyncTextureDecode();

            void HandleTextureDecodingComplete(GLuint textureId, bool success, int width, int height, bool mapWasRemoved);
        };
    }
}