140 lines
3.2 KiB
C++
140 lines
3.2 KiB
C++
/*
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* © Copyright 2014 – Urheberrechtshinweis
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* Alle Rechte vorbehalten / All Rights Reserved
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*
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* Programmcode ist urheberrechtlich geschuetzt.
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* Das Urheberrecht liegt, soweit nicht ausdruecklich anders gekennzeichnet, bei Frank Ebner.
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* Keine Verwendung ohne explizite Genehmigung.
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* (vgl. § 106 ff UrhG / § 97 UrhG)
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*/
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#ifndef MAPTREE_H
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#define MAPTREE_H
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#include "../fixC11.h"
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#include <QAbstractItemModel>
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#include "../mapview/model/MapModel.h"
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// http://doc.qt.io/qt-5/qtwidgets-itemviews-simpletreemodel-example.html
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class MapTreeModel : public QAbstractItemModel {
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Q_OBJECT
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private:
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MapModel* mdl;
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public:
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/** ctor */
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MapTreeModel(MapModel* mdl) : mdl(mdl) {
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connect(mdl, SIGNAL(reset()), this, SLOT(onMapModelReset()));
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}
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virtual ~MapTreeModel() {;}
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MapModel* getMapModel() {
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return mdl;
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}
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virtual QModelIndex index(int row, int column, const QModelIndex& parent = QModelIndex()) const override {
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MapLayer* _parent = nullptr;
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if (!parent.isValid()) {
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_parent = mdl->getRootLayer();
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} else {
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_parent = static_cast<MapLayer*>(parent.internalPointer());
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}
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if (_parent->getSubLayers().size() > 0) {
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return createIndex(row, column, _parent->getSubLayers().at(row));
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} else {
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return createIndex(0, 0, nullptr);
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}
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}
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virtual QModelIndex parent(const QModelIndex& child) const override {
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MapLayer* _child = static_cast<MapLayer*>(child.internalPointer());
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if (!_child) {return QModelIndex();}
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return createIndex(0,0,_child->getParent());
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}
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virtual int rowCount(const QModelIndex& parent = QModelIndex()) const override {
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// if (parent.column() > 0) {
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// return 0;
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// }
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MapLayer* _parent = nullptr;
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if (!parent.isValid()) { // root
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_parent = mdl->getRootLayer();
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} else { // deeper layer
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_parent = static_cast<MapLayer*>(parent.internalPointer());
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}
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return _parent->getSubLayers().size();
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}
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virtual int columnCount(const QModelIndex& parent) const override {
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if (!parent.isValid()) {
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return 1; // root
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} else {
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return 1; // TODO
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}
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}
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QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override {
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MapLayer* _elem = static_cast<MapLayer*>(index.internalPointer());
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if (index.column() == 0) {
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if (role == Qt::DisplayRole) {return _elem->getLayerName().c_str();}
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if (role == Qt::CheckStateRole) {return _elem->isVisible() ? Qt::Checked : Qt::Unchecked;}
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}
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return QVariant();
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}
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Qt::ItemFlags flags(const QModelIndex &index) const override {
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(void) index;
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// each item is selectable, enable, and has an editable checkbox
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int flags = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable;
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return (Qt::ItemFlags) flags;
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}
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bool setData(const QModelIndex& index, const QVariant& value, int role = Qt::EditRole) override {
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// checking / unchecking a layer (visibility)
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if (role == Qt::CheckStateRole) {
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MapLayer* _elem = static_cast<MapLayer*>(index.internalPointer());
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_elem->setVisible( value != 0 );
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return true;
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}
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return false;
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}
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public slots:
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/** the underlying map-model has changed */
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void onMapModelReset() {
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//emit dataChanged(QModelIndex(), QModelIndex(-1));
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//emit modelReset(QPrivateSignal());
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endResetModel();
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}
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};
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#endif // MAPTREE_H
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