102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
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/*
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* Surface
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*/
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#ifndef DUI_BASE_SURFACE_H_INCLUDED
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#define DUI_BASE_SURFACE_H_INCLUDED
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#pragma once
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#pragma warning(disable: 4127) // conditional expression is constant
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namespace DirectUI
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{
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////////////////////////////////////////////////////////
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// Surface
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class Surface
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{
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public:
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enum EType
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{
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stDC = GSURFACE_HDC,
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#ifdef GADGET_ENABLE_GDIPLUS
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stGdiPlus = GSURFACE_GPGRAPHICS
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#endif
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};
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virtual EType GetType() const PURE;
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inline static Surface::EType GetSurfaceType(UINT nSurfaceType);
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inline static UINT GetSurfaceType(Surface::EType type);
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};
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class DCSurface : public Surface
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{
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public:
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inline DCSurface(HDC hdc) { _hdc = hdc; }
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inline HDC GetHDC() { return _hdc; }
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virtual EType GetType() const { return Surface::stDC; }
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protected:
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HDC _hdc;
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};
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#ifdef GADGET_ENABLE_GDIPLUS
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class GpSurface : public Surface
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{
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public:
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inline GpSurface(Gdiplus::Graphics* pgpgr) { _pgpgr = pgpgr; }
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inline Gdiplus::Graphics* GetGraphics() { return _pgpgr; }
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virtual EType GetType() const { return Surface::stGdiPlus; }
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protected:
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Gdiplus::Graphics* _pgpgr;
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};
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#endif // GADGET_ENABLE_GDIPLUS
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inline Surface::EType Surface::GetSurfaceType(UINT nSurfaceType)
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{
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DUIAssert(stDC == GSURFACE_HDC, "ID's must match");
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return (EType)nSurfaceType;
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}
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inline UINT Surface::GetSurfaceType(Surface::EType type)
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{
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DUIAssert(stDC == GSURFACE_HDC, "ID's must match");
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return (UINT) type;
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}
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inline HDC CastHDC(Surface* psrf)
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{
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DUIAssert(psrf->GetType() == Surface::stDC, "Must be an HDC surface");
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return ((DCSurface*)psrf)->GetHDC();
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}
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#ifdef GADGET_ENABLE_GDIPLUS
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inline Gdiplus::Graphics* CastGraphics(Surface* psrf)
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{
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DUIAssert(psrf->GetType() == Surface::stGdiPlus, "Must be a GDI+ surface");
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return ((GpSurface*)psrf)->GetGraphics();
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}
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#endif // GADGET_ENABLE_GDIPLUS
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//
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// Some handy alpha-value operations that are used throughout DirectUI
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//
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#define ARGB(a, r, g, b) ((a << 24) | RGB(r, g, b)) // Current A values may be 255 (opaque) or 0 (transparent)
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#define ORGB(r, g, b) ARGB(255, r, g, b) // Opaque color
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#define GetAValue(v) ((BYTE)((v & 0xFF000000) >> 24))
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}; // namespace DirectUI
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#endif // DUI_BASE_SURFACE_H_INCLUDED
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