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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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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.digia.com
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** $QT_END_LICENSE$
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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 QtCommercial 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 CHARTAXIS_H
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#define CHARTAXIS_H
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#include "qchartglobal.h"
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#include "chart_p.h"
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#include "axisanimation_p.h"
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#include <QGraphicsItem>
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#include <QFont>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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class QAbstractAxis;
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class ChartPresenter;
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class ChartAxis : public Chart
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{
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Q_OBJECT
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public:
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enum AxisType{ X_AXIS,Y_AXIS };
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ChartAxis(QAbstractAxis *axis, ChartPresenter *presenter);
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~ChartAxis();
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virtual AxisType axisType() const = 0;
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void setAxisOpacity(qreal opacity);
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qreal axisOpacity() const;
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void setGridOpacity(qreal opacity);
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qreal gridOpacity() const;
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void setLabelsOpacity(qreal opacity);
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qreal labelsOpacity() const;
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void setShadesOpacity(qreal opacity);
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qreal shadesOpacity() const;
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void setLabelsAngle(int angle);
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int labelsAngle()const { return m_labelsAngle; }
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void setShadesBrush(const QBrush &brush);
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void setShadesPen(const QPen &pen);
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void setAxisPen(const QPen &pen);
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void setGridPen(const QPen &pen);
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void setLabelsPen(const QPen &pen);
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void setLabelsBrush(const QBrush &brush);
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void setLabelsFont(const QFont &font);
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void setLayout(QVector<qreal> &layout);
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QVector<qreal> layout() const { return m_layoutVector; }
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void setAnimation(AxisAnimation* animation);
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ChartAnimation* animation() const { return m_animation; };
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QRectF geometry() const { return m_rect; }
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qreal minimumWidth();
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qreal minimumHeight();
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protected:
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virtual void updateGeometry() = 0;
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virtual QVector<qreal> calculateLayout() const = 0;
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void createNumberLabels(QStringList &labels,qreal min, qreal max,int ticks) const;
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void createCategoryLabels(QStringList &labels,qreal min, qreal max,const QStringList &categories) const;
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public Q_SLOTS:
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virtual void handleAxisUpdated();
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void handleAxisCategoriesUpdated();
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void handleRangeChanged(qreal min , qreal max,int tickCount);
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void handleGeometryChanged(const QRectF &size);
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private:
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inline bool isEmpty();
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void createItems(int count);
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void deleteItems(int count);
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void updateLayout(QVector<qreal> &layout);
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void axisSelected();
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protected:
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QAbstractAxis* m_chartAxis;
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QRectF m_rect;
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int m_labelsAngle;
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QScopedPointer<QGraphicsItemGroup> m_grid;
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QScopedPointer<QGraphicsItemGroup> m_shades;
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QScopedPointer<QGraphicsItemGroup> m_labels;
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QScopedPointer<QGraphicsItemGroup> m_axis;
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QVector<qreal> m_layoutVector;
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qreal m_min;
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qreal m_max;
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int m_ticksCount;
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AxisAnimation *m_animation;
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qreal m_minWidth;
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qreal m_minHeight;
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QFont m_font;
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friend class AxisAnimation;
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friend class AxisItem;
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};
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class AxisItem: public QGraphicsLineItem
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{
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public:
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explicit AxisItem(ChartAxis *axis, QGraphicsItem *parent = 0) : QGraphicsLineItem(parent), m_axis(axis) {}
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protected:
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void mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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Q_UNUSED(event)
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m_axis->axisSelected();
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}
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QRectF boundingRect() const
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{
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return shape().boundingRect();
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}
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QPainterPath shape() const
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{
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QPainterPath path = QGraphicsLineItem::shape();
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QRectF rect = path.boundingRect();
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path.addRect(rect.adjusted(0,0,m_axis->axisType()!=ChartAxis::X_AXIS?8:0,m_axis->axisType()!=ChartAxis::Y_AXIS?8:0));
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return path;
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}
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private:
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ChartAxis* m_axis;
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};
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QTCOMMERCIALCHART_END_NAMESPACE
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#endif /* AXISITEM_H_ */
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