1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the Qt Charts module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:GPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU 19 ** General Public License version 3 or (at your option) any later version 20 ** approved by the KDE Free Qt Foundation. The licenses are as published by 21 ** the Free Software Foundation and appearing in the file LICENSE.GPL3 22 ** included in the packaging of this file. Please review the following 23 ** information to ensure the GNU General Public License requirements will 24 ** be met: https://www.gnu.org/licenses/gpl-3.0.html. 25 ** 26 ** $QT_END_LICENSE$ 27 ** 28 ****************************************************************************/ 29 30 // W A R N I N G 31 // ------------- 32 // 33 // This file is not part of the Qt Chart API. It exists purely as an 34 // implementation detail. This header file may change from version to 35 // version without notice, or even be removed. 36 // 37 // We mean it. 38 39 #ifndef ABSTRACTCHARTLAYOUT_H 40 #define ABSTRACTCHARTLAYOUT_H 41 42 #include <QtWidgets/QGraphicsLayout> 43 #include <QtCore/QMargins> 44 #include <QtCharts/QChartGlobal> 45 #include <QtCharts/private/qchartglobal_p.h> 46 47 QT_CHARTS_BEGIN_NAMESPACE 48 49 class ChartTitle; 50 class ChartAxisElement; 51 class ChartPresenter; 52 class QLegend; 53 class ChartBackground; 54 55 class Q_CHARTS_PRIVATE_EXPORT AbstractChartLayout : public QGraphicsLayout 56 { 57 public: 58 AbstractChartLayout(ChartPresenter *presenter); 59 virtual ~AbstractChartLayout(); 60 61 virtual void setMargins(const QMargins &margins); 62 virtual QMargins margins() const; 63 virtual void setGeometry(const QRectF &rect); 64 65 protected: 66 virtual QRectF calculateBackgroundGeometry(const QRectF &geometry, ChartBackground *background, 67 bool update = true) const; 68 virtual QRectF calculateBackgroundMinimum(const QRectF &minimum) const; 69 virtual QRectF calculateContentGeometry(const QRectF &geometry) const; 70 virtual QRectF calculateContentMinimum(const QRectF &minimum) const; 71 virtual QRectF calculateTitleGeometry(const QRectF &geometry, ChartTitle *title, 72 bool update = true) const; 73 virtual QRectF calculateTitleMinimum(const QRectF &minimum, ChartTitle *title) const; 74 virtual QRectF calculateLegendGeometry(const QRectF &geometry, QLegend *legend, 75 bool update = true) const; 76 virtual QRectF calculateLegendMinimum(const QRectF &minimum, QLegend *legend) const; 77 78 virtual QRectF calculateAxisGeometry(const QRectF &geometry, 79 const QList<ChartAxisElement *>& axes, 80 bool update = true) const = 0; 81 virtual QRectF calculateAxisMinimum(const QRectF &minimum, 82 const QList<ChartAxisElement *>& axes) const = 0; 83 84 // from QGraphicsLayout 85 QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const; count()86 int count() const { return 0; } itemAt(int)87 QGraphicsLayoutItem *itemAt(int) const { return 0; }; removeAt(int)88 void removeAt(int) {}; 89 90 ChartPresenter *m_presenter; 91 QMargins m_margins; 92 QRectF m_minAxisRect; 93 }; 94 95 QT_CHARTS_END_NAMESPACE 96 97 #endif // ABSTRACTCHARTLAYOUT_H 98