104 lines
3.7 KiB
C++
104 lines
3.7 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
|
|
** Contact: http://www.qt-project.org/legal
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** You may use this file under the terms of the BSD license as follows:
|
|
**
|
|
** "Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions are
|
|
** met:
|
|
** * Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** * Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in
|
|
** the documentation and/or other materials provided with the
|
|
** distribution.
|
|
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
|
|
** of its contributors may be used to endorse or promote products derived
|
|
** from this software without specific prior written permission.
|
|
**
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#ifndef PIEVIEW_H
|
|
#define PIEVIEW_H
|
|
|
|
#include <QAbstractItemView>
|
|
|
|
//! [0]
|
|
class PieView : public QAbstractItemView
|
|
{
|
|
Q_OBJECT
|
|
|
|
public:
|
|
PieView(QWidget *parent = 0);
|
|
|
|
QRect visualRect(const QModelIndex &index) const;
|
|
void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible);
|
|
QModelIndex indexAt(const QPoint &point) const;
|
|
|
|
protected slots:
|
|
void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight,
|
|
const QVector<int> &roles = QVector<int>());
|
|
void rowsInserted(const QModelIndex &parent, int start, int end);
|
|
void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
|
|
|
|
protected:
|
|
bool edit(const QModelIndex &index, EditTrigger trigger, QEvent *event);
|
|
QModelIndex moveCursor(QAbstractItemView::CursorAction cursorAction,
|
|
Qt::KeyboardModifiers modifiers);
|
|
|
|
int horizontalOffset() const;
|
|
int verticalOffset() const;
|
|
|
|
bool isIndexHidden(const QModelIndex &index) const;
|
|
|
|
void setSelection(const QRect&, QItemSelectionModel::SelectionFlags command);
|
|
|
|
void mousePressEvent(QMouseEvent *event);
|
|
|
|
void mouseMoveEvent(QMouseEvent *event);
|
|
void mouseReleaseEvent(QMouseEvent *event);
|
|
|
|
void paintEvent(QPaintEvent *event);
|
|
void resizeEvent(QResizeEvent *event);
|
|
void scrollContentsBy(int dx, int dy);
|
|
|
|
QRegion visualRegionForSelection(const QItemSelection &selection) const;
|
|
|
|
private:
|
|
QRect itemRect(const QModelIndex &item) const;
|
|
QRegion itemRegion(const QModelIndex &index) const;
|
|
int rows(const QModelIndex &index = QModelIndex()) const;
|
|
void updateGeometries();
|
|
|
|
int margin;
|
|
int totalSize;
|
|
int pieSize;
|
|
int validItems;
|
|
double totalValue;
|
|
QPoint origin;
|
|
QRubberBand *rubberBand;
|
|
};
|
|
//! [0]
|
|
|
|
#endif // PIEVIEW_H
|