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#pragma once
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#include "stdafx.h"
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#include <optional>
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class GDIPlusImageDrawer
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{
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public:
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GDIPlusImageDrawer(HDC hDestDC, HBITMAP hb);
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// <20><><EFBFBD><EFBFBD><EFBFBD><CDB8>ɫ
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void SetTransparentColor(const std::optional<Gdiplus::Color>& transparentColor);
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// <20><><EFBFBD><EFBFBD><EFBFBD><CDB8><EFBFBD><EFBFBD>
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void SetOpacity(float opacity);
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// <20><><EFBFBD><EFBFBD> ROP <20><><EFBFBD><EFBFBD>
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void SetROP(DWORD rop);
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bool Draw(int xDest, int yDest, int nDestWidth, int nDestHeight,
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int xSrc, int ySrc, int nSrcWidth, int nSrcHeight);
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private:
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void SetTransparentColor(Gdiplus::ImageAttributes& attributes);
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void SetOpacity(Gdiplus::ImageAttributes& attributes);
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bool PerformDraw(int xDest, int yDest, int nDestWidth, int nDestHeight,
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int xSrc, int ySrc, int nSrcWidth, int nSrcHeight,
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Gdiplus::ImageAttributes& attributes);
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bool PerformROP(int xDest, int yDest, int nDestWidth, int nDestHeight,
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int xSrc, int ySrc, int nSrcWidth, int nSrcHeight,
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Gdiplus::ImageAttributes& attributes);
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HDC m_hDestDC = nullptr;
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HBITMAP m_hBitmap = nullptr;
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float m_opacity = 1.0;
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DWORD m_rop = 0;
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std::optional<Gdiplus::Color> m_transparentColor;
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};
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