pieview.h Example File
itemviews/chart/pieview.h
/****************************************************************************
**
** Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
**
** This file is part of an example program for Qt.
** EDITIONS: NOLIMITS
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#ifndef PIEVIEW_H
#define PIEVIEW_H
#include <QAbstractItemView>
#include <QFont>
#include <QItemSelection>
#include <QItemSelectionModel>
#include <QModelIndex>
#include <QRect>
#include <QSize>
#include <QWidget>
class PieView : public QAbstractItemView
{
Q_OBJECT
public:
PieView(QWidget *parent = 0);
QRect visualRect(const QModelIndex &index) const;
void scrollTo(const QModelIndex &index);
QModelIndex indexAt(const QPoint &point) const;
protected slots:
void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
void rowsInserted(const QModelIndex &parent, int start, int end);
void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
protected:
bool isIndexHidden(const QModelIndex &index) const;
void setSelection(const QRect&, QItemSelectionModel::SelectionFlags command);
QRect visualRectForSelection(const QItemSelection &selection) const;
QRect itemRect(const QModelIndex &item) const;
int horizontalOffset() const;
int verticalOffset() const;
QModelIndex moveCursor(QAbstractItemView::CursorAction cursorAction,
Qt::KeyboardModifiers modifiers);
void paintEvent(QPaintEvent *event);
void resizeEvent(QResizeEvent *event);
private:
int rows(const QModelIndex &index = QModelIndex()) const;
void updateGeometries();
int m_margin;
int m_size;
int m_pieSize;
int m_validItems;
double m_totalValue;
};
#endif