/*
 * ====================================================

 * 功能：旋转图像
 * 作者：刘丁维
 * 生成时间：2020/4/21
 * 最近修改时间：v1.0  2020/4/21
				 v1.1  2020/8/12 修复文稿方向自动识别导致崩溃的BUG
 * 版本号：v1.1

 * ====================================================
 */

#ifndef IMAGE_APPLY_ROTATION_H
#define IMAGE_APPLY_ROTATION_H

#include "ImageApply.h"

class  CImageApplyRotation : public CImageApply
{
public:
	enum class RotationType
	{
		Invalid,					//无效
		Rotate_90_clockwise,		//顺时针90°
		Rotate_180,					//180°
		Rotate_90_anti_clockwise,	//逆时针90°，即270°

		AutoTextOrientation			//自动文稿方向识别旋转
	};

public:

	/*
	 * rotation			[in]:旋转类型
	 * isBackTransposed [in]:true为背面180°旋转，反之亦然
	 * dpi				[in]:当前图像的DPI，该参数在rotation为AutoTextOrientation时生效。在识别文稿方向时，会默认将图像变换为200DPI进行识别
	 * tessadataPath	[in]:训练库文件路径，该参数在rotation为AutoTextOrientation时生效
	 */
	CImageApplyRotation(RotationType rotation, bool isBackTransposed = false, int dpi = 200, const char* tessdataPath = nullptr);

	virtual ~CImageApplyRotation();

	virtual void apply(cv::Mat & pDib, int side) override;

	virtual void apply(std::vector<cv::Mat>& mats, bool isTwoSide);

	bool isBackTransposed() { return m_backTranspose; }

	int getDPI() { return m_dpi; }

	RotationType getRotationType() { return m_rotation; }

	void setBackTransposed(bool enabled) { m_backTranspose = enabled; }

	void setDPI(int dpi) { m_dpi = dpi; }

	void setRotationType(RotationType type) { m_rotation = type; }

private:
	RotationType m_rotation;
	bool m_backTranspose;
	int m_dpi;

	void* osd;
};

#endif // !IMAGE_APPLY_ROTATION_H