legendlayout_p.h
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| text/x-c
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CLexer
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r0 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2016 The Qt Company Ltd. | ||||
** Contact: https://www.qt.io/licensing/ | ||||
** | ||||
** This file is part of the Qt Charts module of the Qt Toolkit. | ||||
** | ||||
** $QT_BEGIN_LICENSE:GPL$ | ||||
** 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. | ||||
** | ||||
** GNU General Public License Usage | ||||
** Alternatively, this file may be used under the terms of the GNU | ||||
** General Public License version 3 or (at your option) any later version | ||||
** approved by the KDE Free Qt Foundation. The licenses are as published by | ||||
** the Free Software Foundation and appearing in the file LICENSE.GPL3 | ||||
** included in the packaging of this file. Please review the following | ||||
** information to ensure the GNU General Public License requirements will | ||||
** be met: https://www.gnu.org/licenses/gpl-3.0.html. | ||||
** | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
// 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> | ||||
QT_CHARTS_BEGIN_NAMESPACE | ||||
class QLegend; | ||||
class LegendMarkerItem; | ||||
class 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 | ||||