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#pragma once
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#include "Item.h"
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#include "SpatialIndex.h"
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namespace NItem
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{
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class CItemMeasure
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: public CItem
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{
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public:
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CItemMeasure(CSigmaDoc* ppDoc);
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~CItemMeasure();
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void OnLButtonDblClk(UINT nFlags, CPoint point) override;
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void OnLButtonDown(CDC* pDC, UINT nFlags, CPoint point, int vk) override;
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void OnLButtonUp(CDC* pDC, UINT nFlags, CPoint point, int vk) override;
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int OnMouseMove(CDC* pDC, UINT nFlags, CPoint point) override;
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void OnMouseMoveStatus(CDC* pDC, UINT nFlags, CPoint point, BYTE*& destBuffer, int& destLen) override;
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BOOL OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) override;
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BOOL OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags) override;
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BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) override;
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void OnDraw(CXyDC* pDC) override;
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void OnDraw(CXyDC* pXyDC, CDC* pDC) override;
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void DrawAssistant(CDC* pDC, int mouseX, int mouseY) override;
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void OnOK(void) override;
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void OnCancel(void) override;
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CString GetCurrentInfo() const;
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/**
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* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*
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*/
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void EnableSnap();
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/**
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* <EFBFBD>ر<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*
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*/
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void DisableSnap();
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bool IsSnapEnabled() const;
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private:
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void DrawCross(Gdiplus::Graphics& graphics, Gdiplus::PointF center, int length, const Gdiplus::Pen& pen) const;
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/**
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* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>Ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*
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* \param realPoint <EFBFBD><EFBFBD>ʵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* \return <EFBFBD><EFBFBD>Ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*/
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CPoint GetScreenPoint(const CPoint2D& realPoint) const;
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/**
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* <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*
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* \param point <EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* \return <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><EFBFBD><EFBFBD>꣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD> std::nullopt;
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*/
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std::optional<CPoint2D> GetSnapPoint(const CPoint& point) const;
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/**
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* <EFBFBD><EFBFBD>ǰ״̬
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*/
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enum class MeasureState { Idle, SelectingStart, SelectingEnd };
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bool m_isSnapEnabled = true;
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>η<EFBFBD>Χ<EFBFBD><CEA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><C4BB><EFBFBD><EFBFBD>ϵ<EFBFBD><CFB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵ
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double m_snapRange = 30.0;
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MeasureState m_state = MeasureState::Idle;
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CPoint2D m_startPoint;
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CPoint2D m_endPoint;
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CPoint2D m_prevPoint;
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COLORREF m_penColor = RGB(0, 0, 0);
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int m_penWidth = 1; // <20>߿<EFBFBD>
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std::unique_ptr<CSpatialIndex> m_pSpatialIndex;
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};
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}
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