#pragma once

namespace NItem
{
	class CRectTrackerEx
	{
	public:
		// Constructors
		CRectTrackerEx() { Construct(); };
		CRectTrackerEx(LPCRECT lpSrcRect, UINT nStyle);

		// Style Flags
		enum StyleFlags
		{
			solidLine = 1, dottedLine = 2, hatchedBorder = 4,
			resizeInside = 8, resizeOutside = 16, hatchInside = 32,
		};

		// Hit-Test codes
		enum TrackerHit
		{
			hitNothing = -1,
			hitTopLeft = 0, hitTopRight = 1, hitBottomRight = 2, hitBottomLeft = 3,
			hitTop = 4, hitRight = 5, hitBottom = 6, hitLeft = 7, hitMiddle = 8
		};

		// Attributes
		UINT m_nStyle;      // current state
		CRect m_rect;       // current position (always in pixels)
		CSize m_sizeMin;    // minimum X and Y size during track operation
		int m_nHandleSize;  // size of resize handles (default from WIN.INI)

	// Operations
		void Draw(CDC* pDC) const;
		void GetTrueRect(LPRECT lpTrueRect) const;
		BOOL SetCursor(CWnd* pWnd, UINT nHitTest) const;
		BOOL Track(int nHandle, CPoint point, BOOL bAllowInvert, CDC * pDCScreen);
		BOOL TrackRubberBand(CWnd* pWnd, CPoint point, BOOL bAllowInvert = TRUE);
		int HitTest(CPoint point) const;
		int NormalizeHit(int nHandle) const;

		// Overridables
		virtual void DrawTrackerRect(LPCRECT lpRect, CDC* pDC);
		virtual void AdjustRect(int nHandle, LPRECT lpRect);
		virtual void OnChangedRect(const CRect& rectOld);
		virtual UINT GetHandleMask() const;

		void SetTrackStart(CPoint& point);

		// Implementation
	public:
		virtual ~CRectTrackerEx();

	protected:
		BOOL m_bAllowInvert = FALSE;    // flag passed to Track or TrackRubberBand
		CRect m_rectLast;
		CSize m_sizeLast;
		CPoint m_ptLast;
		BOOL m_bErase = FALSE;          // TRUE if DrawTrackerRect is called for erasing
		BOOL m_bFinalErase = FALSE;     // TRUE if DragTrackerRect called for final erase

		// implementation helpers
		int HitTestHandles(CPoint point) const;
		void GetHandleRect(int nHandle, CRect* pHandleRect) const;
		void GetModifyPointers(int nHandle, int**ppx, int**ppy, int* px, int*py);
		void GetModifyPointers(int nHandle, CPoint point);
		virtual int GetHandleSize(LPCRECT lpRect = NULL) const;
		BOOL TrackHandle(int nHandle, CPoint point, CDC* pDCScreen, CDC* pDCBackground);
		BOOL TrackHandle(int nHandle, CPoint point, CDC* pDCScreen);
		void Construct();
	};
};
using namespace NItem;