#pragma once

#include "stdafx.h"
#include <optional>

class GDIPlusImageDrawer
{
public:
	GDIPlusImageDrawer(HDC hDestDC, HBITMAP hb);

    // 设置透明色
	void SetTransparentColor(const std::optional<Gdiplus::Color>& transparentColor);

	// 设置透明度
	void SetOpacity(float opacity);

    // 设置 ROP 操作
	void SetROP(DWORD rop);

	bool Draw(int xDest, int yDest, int nDestWidth, int nDestHeight,
		int xSrc, int ySrc, int nSrcWidth, int nSrcHeight);

private:
	void SetTransparentColor(Gdiplus::ImageAttributes& attributes);

	void SetOpacity(Gdiplus::ImageAttributes& attributes);

	bool PerformDraw(int xDest, int yDest, int nDestWidth, int nDestHeight,
		int xSrc, int ySrc, int nSrcWidth, int nSrcHeight,
		Gdiplus::ImageAttributes& attributes);
	

	bool PerformROP(int xDest, int yDest, int nDestWidth, int nDestHeight,
		int xSrc, int ySrc, int nSrcWidth, int nSrcHeight,
		Gdiplus::ImageAttributes& attributes);

    HDC m_hDestDC = nullptr;
    HBITMAP m_hBitmap = nullptr;
    float m_opacity = 1.0;
    DWORD m_rop = 0;
    std::optional<Gdiplus::Color> m_transparentColor;
};