| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
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| 3 | |
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| 4 | // W A R N I N G |
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| 5 | // ------------- |
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| 6 | // |
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| 7 | // This file is not part of the Qt Chart API. It exists purely as an |
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| 8 | // implementation detail. This header file may change from version to |
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| 9 | // version without notice, or even be removed. |
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| 10 | // |
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| 11 | // We mean it. |
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| 12 | |
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| 13 | #ifndef ABSTRACTCHARTLAYOUT_H |
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| 14 | #define ABSTRACTCHARTLAYOUT_H |
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| 15 | |
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| 16 | #include <QtWidgets/QGraphicsLayout> |
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| 17 | #include <QtCore/QMargins> |
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| 18 | #include <QtCharts/QChartGlobal> |
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| 19 | #include <QtCharts/private/qchartglobal_p.h> |
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| 20 | |
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| 21 | QT_BEGIN_NAMESPACE |
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| 22 | |
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| 23 | class ChartTitle; |
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| 24 | class ChartAxisElement; |
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| 25 | class ChartPresenter; |
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| 26 | class QLegend; |
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| 27 | class ChartBackground; |
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| 28 | |
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| 29 | class Q_CHARTS_EXPORT AbstractChartLayout : public QGraphicsLayout |
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| 30 | { |
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| 31 | public: |
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| 32 | AbstractChartLayout(ChartPresenter *presenter); |
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| 33 | virtual ~AbstractChartLayout(); |
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| 34 | |
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| 35 | virtual void setMargins(const QMargins &margins); |
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| 36 | virtual QMargins margins() const; |
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| 37 | void setGeometry(const QRectF &rect) override; |
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| 38 | |
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| 39 | protected: |
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| 40 | virtual QRectF calculateBackgroundGeometry(const QRectF &geometry, ChartBackground *background, |
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| 41 | bool update = true) const; |
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| 42 | virtual QRectF calculateBackgroundMinimum(const QRectF &minimum) const; |
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| 43 | virtual QRectF calculateContentGeometry(const QRectF &geometry) const; |
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| 44 | virtual QRectF calculateContentMinimum(const QRectF &minimum) const; |
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| 45 | virtual QRectF calculateTitleGeometry(const QRectF &geometry, ChartTitle *title, |
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| 46 | bool update = true) const; |
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| 47 | virtual QRectF calculateTitleMinimum(const QRectF &minimum, ChartTitle *title) const; |
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| 48 | virtual QRectF calculateLegendGeometry(const QRectF &geometry, QLegend *legend, |
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| 49 | bool update = true) const; |
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| 50 | virtual QRectF calculateLegendMinimum(const QRectF &minimum, QLegend *legend) const; |
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| 51 | |
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| 52 | virtual QRectF calculateAxisGeometry(const QRectF &geometry, |
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| 53 | const QList<ChartAxisElement *>& axes, |
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| 54 | bool update = true) const = 0; |
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| 55 | virtual QRectF calculateAxisMinimum(const QRectF &minimum, |
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| 56 | const QList<ChartAxisElement *>& axes) const = 0; |
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| 57 | |
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| 58 | // from QGraphicsLayout |
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| 59 | QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const override; |
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| 60 | int count() const override { return 0; } |
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| 61 | QGraphicsLayoutItem *itemAt(int) const override { return 0; }; |
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| 62 | void removeAt(int) override {}; |
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| 63 | |
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| 64 | ChartPresenter *m_presenter; |
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| 65 | QMargins m_margins; |
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| 66 | QRectF m_minAxisRect; |
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| 67 | }; |
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| 68 | |
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| 69 | QT_END_NAMESPACE |
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| 70 | |
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| 71 | #endif // ABSTRACTCHARTLAYOUT_H |
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| 72 | |
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