qitemselectionmodel.h
上传用户:detong
上传日期:2022-06-22
资源大小:20675k
文件大小:8k
- /****************************************************************************
- **
- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
- **
- ** This file is part of the QtGui module of the Qt Toolkit.
- **
- ** Commercial Usage
- ** Licensees holding valid Qt Commercial licenses may use this file in
- ** accordance with the Qt Commercial License Agreement provided with the
- ** Software or, alternatively, in accordance with the terms contained in
- ** a written agreement between you and Nokia.
- **
- **
- ** GNU General Public License Usage
- ** Alternatively, this file may be used under the terms of the GNU
- ** General Public License versions 2.0 or 3.0 as published by the Free
- ** Software Foundation and appearing in the file LICENSE.GPL included in
- ** the packaging of this file. Please review the following information
- ** to ensure GNU General Public Licensing requirements will be met:
- ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
- ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special
- ** exception, Nokia gives you certain additional rights. These rights
- ** are described in the Nokia Qt GPL Exception version 1.3, included in
- ** the file GPL_EXCEPTION.txt in this package.
- **
- ** Qt for Windows(R) Licensees
- ** As a special exception, Nokia, as the sole copyright holder for Qt
- ** Designer, grants users of the Qt/Eclipse Integration plug-in the
- ** right for the Qt/Eclipse Integration to link to functionality
- ** provided by Qt Designer and its related libraries.
- **
- ** If you are unsure which license is appropriate for your use, please
- ** contact the sales department at qt-sales@nokia.com.
- **
- ****************************************************************************/
- #ifndef QITEMSELECTIONMODEL_H
- #define QITEMSELECTIONMODEL_H
- #include <QtCore/qset.h>
- #include <QtCore/qvector.h>
- #include <QtCore/qlist.h>
- #include <QtCore/qabstractitemmodel.h>
- QT_BEGIN_HEADER
- QT_BEGIN_NAMESPACE
- QT_MODULE(Gui)
- #ifndef QT_NO_ITEMVIEWS
- class Q_GUI_EXPORT QItemSelectionRange
- {
- public:
- inline QItemSelectionRange() {}
- inline QItemSelectionRange(const QItemSelectionRange &other)
- : tl(other.tl), br(other.br) {}
- inline QItemSelectionRange(const QModelIndex &topLeft, const QModelIndex &bottomRight);
- explicit inline QItemSelectionRange(const QModelIndex &index)
- { tl = index; br = tl; }
- inline int top() const { return tl.row(); }
- inline int left() const { return tl.column(); }
- inline int bottom() const { return br.row(); }
- inline int right() const { return br.column(); }
- inline int width() const { return br.column() - tl.column() + 1; }
- inline int height() const { return br.row() - tl.row() + 1; }
- inline QModelIndex topLeft() const { return QModelIndex(tl); }
- inline QModelIndex bottomRight() const { return QModelIndex(br); }
- inline QModelIndex parent() const { return tl.parent(); }
- inline const QAbstractItemModel *model() const { return tl.model(); }
- inline bool contains(const QModelIndex &index) const
- {
- return (parent() == index.parent()
- && tl.row() <= index.row() && tl.column() <= index.column()
- && br.row() >= index.row() && br.column() >= index.column());
- }
- inline bool contains(int row, int column, const QModelIndex &parentIndex) const
- {
- return (parent() == parentIndex
- && tl.row() <= row && tl.column() <= column
- && br.row() >= row && br.column() >= column);
- }
- bool intersects(const QItemSelectionRange &other) const;
- QItemSelectionRange intersect(const QItemSelectionRange &other) const; // ### Qt 5: make QT4_SUPPORT
- inline QItemSelectionRange intersected(const QItemSelectionRange &other) const
- { return intersect(other); }
- inline bool operator==(const QItemSelectionRange &other) const
- { return (tl == other.tl && br == other.br); }
- inline bool operator!=(const QItemSelectionRange &other) const
- { return !operator==(other); }
- inline bool isValid() const
- {
- return (tl.isValid() && br.isValid() && tl.parent() == br.parent()
- && top() <= bottom() && left() <= right());
- }
- QModelIndexList indexes() const;
- private:
- QPersistentModelIndex tl, br;
- };
- Q_DECLARE_TYPEINFO(QItemSelectionRange, Q_MOVABLE_TYPE);
- inline QItemSelectionRange::QItemSelectionRange(const QModelIndex &atopLeft,
- const QModelIndex &abottomRight)
- { tl = atopLeft; br = abottomRight; }
- class QItemSelection;
- class QItemSelectionModelPrivate;
- class Q_GUI_EXPORT QItemSelectionModel : public QObject
- {
- Q_OBJECT
- Q_DECLARE_PRIVATE(QItemSelectionModel)
- Q_FLAGS(SelectionFlags)
- public:
- enum SelectionFlag {
- NoUpdate = 0x0000,
- Clear = 0x0001,
- Select = 0x0002,
- Deselect = 0x0004,
- Toggle = 0x0008,
- Current = 0x0010,
- Rows = 0x0020,
- Columns = 0x0040,
- SelectCurrent = Select | Current,
- ToggleCurrent = Toggle | Current,
- ClearAndSelect = Clear | Select
- };
- Q_DECLARE_FLAGS(SelectionFlags, SelectionFlag)
- explicit QItemSelectionModel(QAbstractItemModel *model);
- explicit QItemSelectionModel(QAbstractItemModel *model, QObject *parent);
- virtual ~QItemSelectionModel();
- QModelIndex currentIndex() const;
- bool isSelected(const QModelIndex &index) const;
- bool isRowSelected(int row, const QModelIndex &parent) const;
- bool isColumnSelected(int column, const QModelIndex &parent) const;
- bool rowIntersectsSelection(int row, const QModelIndex &parent) const;
- bool columnIntersectsSelection(int column, const QModelIndex &parent) const;
- bool hasSelection() const;
- QModelIndexList selectedIndexes() const;
- QModelIndexList selectedRows(int column = 0) const;
- QModelIndexList selectedColumns(int row = 0) const;
- const QItemSelection selection() const;
- const QAbstractItemModel *model() const;
- public Q_SLOTS:
- void setCurrentIndex(const QModelIndex &index, QItemSelectionModel::SelectionFlags command);
- virtual void select(const QModelIndex &index, QItemSelectionModel::SelectionFlags command);
- virtual void select(const QItemSelection &selection, QItemSelectionModel::SelectionFlags command);
- virtual void clear();
- virtual void reset();
- void clearSelection();
- Q_SIGNALS:
- void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
- void currentChanged(const QModelIndex ¤t, const QModelIndex &previous);
- void currentRowChanged(const QModelIndex ¤t, const QModelIndex &previous);
- void currentColumnChanged(const QModelIndex ¤t, const QModelIndex &previous);
- protected:
- QItemSelectionModel(QItemSelectionModelPrivate &dd, QAbstractItemModel *model);
- void emitSelectionChanged(const QItemSelection &newSelection, const QItemSelection &oldSelection);
- private:
- Q_DISABLE_COPY(QItemSelectionModel)
- Q_PRIVATE_SLOT(d_func(), void _q_columnsAboutToBeRemoved(const QModelIndex&, int, int))
- Q_PRIVATE_SLOT(d_func(), void _q_rowsAboutToBeRemoved(const QModelIndex&, int, int))
- Q_PRIVATE_SLOT(d_func(), void _q_columnsAboutToBeInserted(const QModelIndex&, int, int))
- Q_PRIVATE_SLOT(d_func(), void _q_rowsAboutToBeInserted(const QModelIndex&, int, int))
- Q_PRIVATE_SLOT(d_func(), void _q_layoutAboutToBeChanged())
- Q_PRIVATE_SLOT(d_func(), void _q_layoutChanged())
- };
- Q_DECLARE_OPERATORS_FOR_FLAGS(QItemSelectionModel::SelectionFlags)
- // dummy implentation of qHash() necessary for instantiating QList<QItemSelectionRange>::toSet() with MSVC
- inline uint qHash(const QItemSelectionRange &) { return 0; }
- class Q_GUI_EXPORT QItemSelection : public QList<QItemSelectionRange>
- {
- public:
- QItemSelection() {}
- QItemSelection(const QModelIndex &topLeft, const QModelIndex &bottomRight);
- void select(const QModelIndex &topLeft, const QModelIndex &bottomRight);
- bool contains(const QModelIndex &index) const;
- QModelIndexList indexes() const;
- void merge(const QItemSelection &other, QItemSelectionModel::SelectionFlags command);
- static void split(const QItemSelectionRange &range,
- const QItemSelectionRange &other,
- QItemSelection *result);
- };
- #ifndef QT_NO_DEBUG_STREAM
- Q_GUI_EXPORT QDebug operator<<(QDebug, const QItemSelectionRange &);
- #endif
- #endif // QT_NO_ITEMVIEWS
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif // QITEMSELECTIONMODEL_H