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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef PIEVIEW_H
#define PIEVIEW_H
#include <QAbstractItemView>
//! [0]
class PieView : public QAbstractItemView
{
Q_OBJECT
public:
PieView(QWidget *parent = nullptr);
QRect visualRect(const QModelIndex &index) const override;
void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible) override;
QModelIndex indexAt(const QPoint &point) const override;
protected slots:
void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight,
const QList<int> &roles = QList<int>()) override;
void rowsInserted(const QModelIndex &parent, int start, int end) override;
void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) override;
protected:
bool edit(const QModelIndex &index, EditTrigger trigger, QEvent *event) override;
QModelIndex moveCursor(QAbstractItemView::CursorAction cursorAction,
Qt::KeyboardModifiers modifiers) override;
int horizontalOffset() const override;
int verticalOffset() const override;
bool isIndexHidden(const QModelIndex &index) const override;
void setSelection(const QRect&, QItemSelectionModel::SelectionFlags command) override;
void mousePressEvent(QMouseEvent *event) override;
void mouseMoveEvent(QMouseEvent *event) override;
void mouseReleaseEvent(QMouseEvent *event) override;
void paintEvent(QPaintEvent *event) override;
void resizeEvent(QResizeEvent *event) override;
void scrollContentsBy(int dx, int dy) override;
QRegion visualRegionForSelection(const QItemSelection &selection) const override;
private:
QRect itemRect(const QModelIndex &item) const;
QRegion itemRegion(const QModelIndex &index) const;
int rows(const QModelIndex &index = QModelIndex()) const;
void updateGeometries() override;
int margin = 0;
int totalSize = 300;
int pieSize = totalSize - 2 * margin;
int validItems = 0;
double totalValue = 0.0;
QRubberBand *rubberBand = nullptr;
QPoint origin;
};
//! [0]
#endif // PIEVIEW_H
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