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/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd
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** All rights reserved.
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** For any questions to The Qt Company, please use contact form at http://qt.io
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**
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** This file is part of the Qt Charts module.
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**
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** Licensees holding valid commercial license for Qt may use this file in
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** accordance with the Qt License Agreement provided with the Software
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** or, alternatively, in accordance with the terms contained in a written
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** agreement between you and The Qt Company.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.io
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**
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****************************************************************************/
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt Enterprise Chart API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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#ifndef CHARTAXISELEMENT_H
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#define CHARTAXISELEMENT_H
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#include <QtCharts/QChartGlobal>
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#include <private/chartelement_p.h>
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#include <private/axisanimation_p.h>
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#include <QtWidgets/QGraphicsItem>
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#include <QtWidgets/QGraphicsLayoutItem>
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#include <QtGui/QFont>
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QT_CHARTS_BEGIN_NAMESPACE
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class ChartPresenter;
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class QAbstractAxis;
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class ChartAxisElement : public ChartElement, public QGraphicsLayoutItem
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{
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Q_OBJECT
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using QGraphicsLayoutItem::setGeometry;
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public:
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ChartAxisElement(QAbstractAxis *axis, QGraphicsItem *item, bool intervalAxis = false);
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~ChartAxisElement();
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virtual QRectF gridGeometry() const = 0;
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virtual void setGeometry(const QRectF &axis, const QRectF &grid) = 0;
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virtual bool isEmpty() = 0;
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void setAnimation(AxisAnimation *animation) { m_animation = animation; }
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AxisAnimation *animation() const { return m_animation; }
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QAbstractAxis *axis() const { return m_axis; }
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void setLayout(QVector<qreal> &layout) { m_layout = layout; }
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QVector<qreal> &layout() { return m_layout; } // Modifiable reference
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inline qreal labelPadding() const { return qreal(4.0); }
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inline qreal titlePadding() const { return qreal(2.0); }
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void setLabels(const QStringList &labels) { m_labelsList = labels; }
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QStringList labels() const { return m_labelsList; }
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qreal min() const;
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qreal max() const;
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QRectF axisGeometry() const { return m_axisRect; }
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void setAxisGeometry(const QRectF &axisGeometry) { m_axisRect = axisGeometry; }
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void axisSelected();
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//this flag indicates that axis is used to show intervals it means labels are in between ticks
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bool intervalAxis() const { return m_intervalAxis; }
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QStringList createValueLabels(qreal max, qreal min, int ticks, const QString &format) const;
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QStringList createLogValueLabels(qreal min, qreal max, qreal base, int ticks,
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const QString &format) const;
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QStringList createDateTimeLabels(qreal max, qreal min, int ticks, const QString &format) const;
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// from QGraphicsLayoutItem
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QRectF boundingRect() const
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{
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return QRectF();
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}
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// from QGraphicsLayoutItem
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void paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget*)
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{
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}
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protected:
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virtual QVector<qreal> calculateLayout() const = 0;
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virtual void updateLayout(QVector<qreal> &layout) = 0;
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QList<QGraphicsItem *> gridItems() { return m_grid->childItems(); }
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QList<QGraphicsItem *> labelItems() { return m_labels->childItems(); }
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QList<QGraphicsItem *> shadeItems() { return m_shades->childItems(); }
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QList<QGraphicsItem *> arrowItems() { return m_arrow->childItems(); }
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QGraphicsTextItem *titleItem() const { return m_title.data(); }
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QGraphicsItemGroup *gridGroup() { return m_grid.data(); }
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QGraphicsItemGroup *labelGroup() { return m_labels.data(); }
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QGraphicsItemGroup *shadeGroup() { return m_shades.data(); }
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QGraphicsItemGroup *arrowGroup() { return m_arrow.data(); }
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public Q_SLOTS:
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void handleVisibleChanged(bool visible);
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void handleArrowVisibleChanged(bool visible);
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void handleGridVisibleChanged(bool visible);
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void handleLabelsVisibleChanged(bool visible);
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void handleShadesVisibleChanged(bool visible);
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void handleLabelsAngleChanged(int angle);
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virtual void handleShadesBrushChanged(const QBrush &brush) = 0;
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virtual void handleShadesPenChanged(const QPen &pen) = 0;
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virtual void handleArrowPenChanged(const QPen &pen) = 0;
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virtual void handleGridPenChanged(const QPen &pen) = 0;
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void handleLabelsBrushChanged(const QBrush &brush);
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void handleLabelsFontChanged(const QFont &font);
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void handleTitleBrushChanged(const QBrush &brush);
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void handleTitleFontChanged(const QFont &font);
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void handleTitleTextChanged(const QString &title);
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void handleTitleVisibleChanged(bool visible);
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void handleRangeChanged(qreal min, qreal max);
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void handleReverseChanged(bool reverse);
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Q_SIGNALS:
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void clicked();
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private:
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void connectSlots();
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QString formatLabel(const QString &formatSpec, const QByteArray &array,
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qreal value, int precision, const QString &preStr,
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const QString &postStr) const;
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QAbstractAxis *m_axis;
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AxisAnimation *m_animation;
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QVector<qreal> m_layout;
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QStringList m_labelsList;
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QRectF m_axisRect;
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QScopedPointer<QGraphicsItemGroup> m_grid;
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QScopedPointer<QGraphicsItemGroup> m_arrow;
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QScopedPointer<QGraphicsItemGroup> m_shades;
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QScopedPointer<QGraphicsItemGroup> m_labels;
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QScopedPointer<QGraphicsTextItem> m_title;
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bool m_intervalAxis;
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};
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QT_CHARTS_END_NAMESPACE
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#endif /* CHARTAXISELEMENT_H */
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