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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
****************************************************************************/
// W A R N I N G
// -------------
//
// This file is not part of the Qt Chart API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef LEGENDLAYOUT_H
#define LEGENDLAYOUT_H
#include <QtWidgets/QGraphicsLayout>
#include <QtCharts/QChartGlobal>
#include <QtCharts/private/qchartglobal_p.h>
QT_CHARTS_BEGIN_NAMESPACE
class QLegend;
class LegendMarkerItem;
class Q_CHARTS_PRIVATE_EXPORT LegendLayout : public QGraphicsLayout
{
public:
LegendLayout(QLegend *legend);
virtual ~LegendLayout();
void setGeometry(const QRectF &rect);
void setOffset(qreal x, qreal y);
QPointF offset() const;
void invalidate();
protected:
QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;
int count() const { return 0; }
QGraphicsLayoutItem *itemAt(int) const { return 0; };
void removeAt(int) {};
private:
void setAttachedGeometry(const QRectF &rect);
void setDettachedGeometry(const QRectF &rect);
struct LegendWidthStruct {
LegendMarkerItem *item;
qreal width;
};
static bool widthLongerThan(const LegendWidthStruct *item1,
const LegendWidthStruct *item2);
private:
QLegend *m_legend;
qreal m_offsetX;
qreal m_offsetY;
qreal m_minOffsetX;
qreal m_minOffsetY;
qreal m_maxOffsetX;
qreal m_maxOffsetY;
qreal m_width;
qreal m_height;
};
QT_CHARTS_END_NAMESPACE
#endif
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