ViewportManager.h

#pragma once
#include "IAttributeFields.h"
#include "ViewportManager.h"
#include "Viewport.h"

namespace ParaEngine
{
    enum VIEWPORT_LAYOUT {
        VIEW_LAYOUT_DEFAULT,
        VIEW_LAYOUT_STEREO_LEFT_RIGHT,
        VIEW_LAYOUT_STEREO_UP_DOWN,
        VIEW_LAYOUT_STEREO_RED_BLUE,
        VIEW_LAYOUT_INVALID,
    };

    class CViewportManager : public IAttributeFields
    {
    public:
        CViewportManager();
        virtual ~CViewportManager(void);

        ATTRIBUTE_DEFINE_CLASS(CViewportManager);
        virtual int InstallFields(CAttributeClass* pClass, bool bOverride);

        virtual IAttributeFields* GetChildAttributeObject(const std::string& sName);

        virtual int GetChildAttributeObjectCount(int nColumnIndex = 0);
        virtual IAttributeFields* GetChildAttributeObject(int nRowIndex, int nColumnIndex = 0);

    public:
        void UpdateViewport(int nBackbufferWidth, int nBackbufferHeight);

        HRESULT Render(double dTimeDelta, int nPipelineOrder);

        void GetPointOnViewport(int& x, int& y, int* pWidth, int* pHeight);

        CViewport* GetViewportByPoint(int x, int y);

        void SetLayout(VIEWPORT_LAYOUT nLayout, CSceneObject* pMainScene = NULL, CGUIRoot* pGUIRoot = NULL);
        VIEWPORT_LAYOUT GetLayout();

        void UpdateLayout();

        int GetViewportCount();
        void SetViewportCount(int nCount);

        void GetCurrentViewport(ParaViewport& out);
    public:
        CViewport* CreateGetViewPort(int nIndex = 1);
        
        CViewport* GetActiveViewPort();
        void SetActiveViewPortIndex(int val);
        void SetActiveViewPort(CViewport* pViewport);

        void DeleteViewPort(int nIndex=0);

        void Cleanup();

        int GetWidth() const;
        int GetHeight() const;

        void ApplyViewport();

        int getCurrentFrameNumber()const
        {
            return m_nCurrentFrameNumber;
        }
    private:
        void SortViewport();
    private:
        std::vector<CViewport*> m_viewportList;
        std::vector<CViewport*> m_viewportSorted;

        ParaViewport m_viewport;
        int m_nWidth;
        int m_nHeight;
        int m_nActiveViewPortIndex;
        VIEWPORT_LAYOUT m_nLayout;
        int m_nCurrentFrameNumber;
    };

}