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57 lines
1.5 KiB
C++
57 lines
1.5 KiB
C++
#pragma once
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#include "ActionItem.h"
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#include <optional>
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#include <functional>
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namespace NAction
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{
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// 图层位置
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struct CLayerLocation
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{
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CString layer; // 图层本身路径，通过它的路径名可能定位具体层级;这里不叫 layerPath 是为了和旧风格保持一致
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CString prevLayer; // 前一图层名字，通过它前面的路径名，可以定位它在同一层级第几个元素，为空时表示它在最前面
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};
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/**
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* 图层拖动和恢复
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*/
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class CActionLayerDragDropItem :
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public CActionItem
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{
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public:
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CActionLayerDragDropItem();
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CActionLayerDragDropItem(CSigmaDoc* ppDoc, const CLayerLocation &oldLocation, const CLayerLocation &newLocation);
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std::string GetActionName() const override
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{
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return typeid(*this).name();
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}
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void Undo() override;
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void Redo() override;
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void accept(CActionVisitor& visitor) override;
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friend class BlobSerializer;
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private:
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// layer 子层中第一个成员
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POSITION GetFirstChildLayerPosition(CString layer);
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POSITION GetLayerPosition(CString strLayer);
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POSITION GetMatchPosition(CString strLayer, std::function<bool(CLayer*)> pred);
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/**
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* 从一个位置移动到另一个位置
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*
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* \param oldLocation 旧位置
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* \param newLocation 新位置
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*/
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void Move(const CLayerLocation& oldLocation, const CLayerLocation& newLocation);
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CLayerLocation m_oldLocation; // 原来的位置
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CLayerLocation m_newLocation; // 被拖动到的位置
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};
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}
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