| /**************************************************************************** |
| ** |
| ** 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> |
| #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 |