| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
|---|
| 3 | |
|---|
| 4 | // W A R N I N G |
|---|
| 5 | // ------------- |
|---|
| 6 | // |
|---|
| 7 | // This file is not part of the Qt Chart API. It exists purely as an |
|---|
| 8 | // implementation detail. This header file may change from version to |
|---|
| 9 | // version without notice, or even be removed. |
|---|
| 10 | // |
|---|
| 11 | // We mean it. |
|---|
| 12 | |
|---|
| 13 | #ifndef LEGENDLAYOUT_H |
|---|
| 14 | #define LEGENDLAYOUT_H |
|---|
| 15 | #include <QtWidgets/QGraphicsLayout> |
|---|
| 16 | #include <QtCharts/QChartGlobal> |
|---|
| 17 | #include <QtCharts/private/qchartglobal_p.h> |
|---|
| 18 | |
|---|
| 19 | QT_BEGIN_NAMESPACE |
|---|
| 20 | |
|---|
| 21 | class QLegend; |
|---|
| 22 | class LegendMarkerItem; |
|---|
| 23 | |
|---|
| 24 | class Q_CHARTS_PRIVATE_EXPORT LegendLayout : public QGraphicsLayout |
|---|
| 25 | { |
|---|
| 26 | public: |
|---|
| 27 | |
|---|
| 28 | LegendLayout(QLegend *legend); |
|---|
| 29 | virtual ~LegendLayout(); |
|---|
| 30 | |
|---|
| 31 | void setGeometry(const QRectF &rect) override; |
|---|
| 32 | |
|---|
| 33 | void setOffset(qreal x, qreal y); |
|---|
| 34 | QPointF offset() const; |
|---|
| 35 | |
|---|
| 36 | void invalidate() override; |
|---|
| 37 | protected: |
|---|
| 38 | QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const override; |
|---|
| 39 | int count() const override { return 0; } |
|---|
| 40 | QGraphicsLayoutItem *itemAt(int) const override { return 0; }; |
|---|
| 41 | void removeAt(int) override {}; |
|---|
| 42 | |
|---|
| 43 | private: |
|---|
| 44 | void setAttachedGeometry(const QRectF &rect); |
|---|
| 45 | void setDettachedGeometry(const QRectF &rect); |
|---|
| 46 | |
|---|
| 47 | struct LegendWidthStruct { |
|---|
| 48 | LegendMarkerItem *item; |
|---|
| 49 | qreal width; |
|---|
| 50 | }; |
|---|
| 51 | static bool widthLongerThan(const LegendWidthStruct *item1, |
|---|
| 52 | const LegendWidthStruct *item2); |
|---|
| 53 | |
|---|
| 54 | private: |
|---|
| 55 | QLegend *m_legend; |
|---|
| 56 | qreal m_offsetX; |
|---|
| 57 | qreal m_offsetY; |
|---|
| 58 | qreal m_minOffsetX; |
|---|
| 59 | qreal m_minOffsetY; |
|---|
| 60 | qreal m_maxOffsetX; |
|---|
| 61 | qreal m_maxOffsetY; |
|---|
| 62 | qreal m_width; |
|---|
| 63 | qreal m_height; |
|---|
| 64 | }; |
|---|
| 65 | |
|---|
| 66 | QT_END_NAMESPACE |
|---|
| 67 | |
|---|
| 68 | #endif |
|---|
| 69 | |
|---|
