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#pragma once
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#include "CurveEditorBase.h"
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#include "HandleDrawer.h"
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/**
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* @brief 样条编辑器绘制器
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*
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* 负责控制点、选中高亮、拖拽预览线及 Handle 区域计算。
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*/
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class SplineEditorRenderer
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{
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public:
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SplineEditorRenderer(CSigmaDoc* pDoc, HandleDrawer* pHandleDrawer);
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/**
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* @brief 使用 CDC 绘制所有控制点
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*/
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void DrawHandlesByCDC(CDC* pDC, CCurveEx* pCurve) const;
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/**
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* @brief 绘制单个 Handle 或高亮当前选中
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*/
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void DrawHandle(CXyDC* pDC, CDC* pScreenDC, CCurveEx* pCurve, int currentHandleIndex) const;
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/**
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* @brief 绘制指定索引的选中态 Handle
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*/
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void DrawSelectHandle(CDC* pScreenDC, CXyDC* pXyDC, CCurveEx* pCurve, int nHandle, DWORD handleDrawMode) const;
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/**
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* @brief 绘制拖拽预览线（R2_NOTXORPEN 擦除）
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*/
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void DrawDragPreview(CDC* pScreenDC, CXyDC* pXyDC, const CPointList& newPointList) const;
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/**
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* @brief 获取指定 Handle 的刷新区域
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*/
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CRect GetRangeWidthIndex(CCurveEx* pCurve, int nIndex, CXyDC* pDC, CSize handleSize) const;
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/**
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* @brief 首节点使用稍大命中区域
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*/
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CRect GetFirstNodeHandleRectFocus(CPoint point) const;
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private:
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CSigmaDoc* m_pDoc;
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HandleDrawer* m_pHandleDrawer;
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};
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