qt5base-lts/examples/itemviews/chart/pieview.h
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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
2011-04-27 12:05:43 +02:00

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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
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#ifndef PIEVIEW_H
#define PIEVIEW_H
#include <QAbstractItemView>
#include <QFont>
#include <QItemSelection>
#include <QItemSelectionModel>
#include <QModelIndex>
#include <QRect>
#include <QSize>
#include <QPoint>
#include <QWidget>
QT_BEGIN_NAMESPACE
class QRubberBand;
QT_END_NAMESPACE
//! [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);
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