53 lines
1.9 KiB
C++
53 lines
1.9 KiB
C++
#pragma once
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#include <QCoreApplication>
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#include <QAbstractItemModel>
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#include "LayerTree.h"
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class LayerTreeLayer; // forward declare
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/**
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* LayerTreeModel：Qt 适配层（不再管理树）
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* - 1 列：名称（带图标）+ checkbox
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* - 勾选可见性（可选级联勾选）
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*/
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class LayerTreeModel : public QAbstractItemModel
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{
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Q_OBJECT
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public:
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explicit LayerTreeModel(LayerTree* tree,
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QObject* parent = nullptr,
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bool cascadeCheck = true);
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~LayerTreeModel() override = default;
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// QAbstractItemModel 必须接口
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QModelIndex index(int row, int column,
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const QModelIndex& parent = QModelIndex()) const override;
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QModelIndex parent(const QModelIndex& child) const override;
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int rowCount(const QModelIndex& parent = QModelIndex()) const override;
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int columnCount(const QModelIndex& parent = QModelIndex()) const override;
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QVariant data(const QModelIndex& index, int role) const override;
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bool setData(const QModelIndex& index, const QVariant& value, int role) override;
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Qt::ItemFlags flags(const QModelIndex& index) const override;
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// 对外 API：构建树（内部会正确调用 begin/endInsertRows）
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LayerTreeNode* root() const;
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LayerTreeNode* addGroup(LayerTreeNode* parent, const QString& name, const QIcon& icon = QIcon());
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LayerTreeNode* addLayer(LayerTreeNode* parent, LayerTreeLayer* layerNode, const QIcon& icon = QIcon());
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void setCascadeCheckEnabled(bool enabled);
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bool cascadeCheckEnabled() const;
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// 新增：从父节点移除子节点（包装 LayerTree::removeNode 并发出 model 通知）
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LayerTreeNode* removeNode(LayerTreeNode* parent, int row);
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private:
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LayerTree* m_tree = nullptr; // not owned
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bool m_cascadeCheck = true;
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private:
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LayerTreeNode* nodeFromIndex(const QModelIndex& index) const;
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QModelIndex indexFromNode(LayerTreeNode* n) const;
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};
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