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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Enterprise Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
// W A R N I N G
// -------------
//
// This file is not part of the Qt Enterprise Chart API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef AREACHARTITEM_H
#define AREACHARTITEM_H
#include <QtCharts/QChartGlobal>
#include <private/linechartitem_p.h>
#include <QtCharts/QAreaSeries>
#include <QtGui/QPen>
QT_CHARTS_BEGIN_NAMESPACE
class AreaChartItem;
class AreaChartItem : public ChartItem
{
Q_OBJECT
public:
AreaChartItem(QAreaSeries *areaSeries, QGraphicsItem* item = 0);
~AreaChartItem();
//from QGraphicsItem
QRectF boundingRect() const;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
QPainterPath shape() const;
LineChartItem *upperLineItem() const { return m_upper; }
LineChartItem *lowerLineItem() const { return m_lower; }
void updatePath();
void setPresenter(ChartPresenter *presenter);
QAreaSeries *series() const { return m_series; }
protected:
void mousePressEvent(QGraphicsSceneMouseEvent *event);
void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
Q_SIGNALS:
void clicked(const QPointF &point);
void hovered(const QPointF &point, bool state);
void pressed(const QPointF &point);
void released(const QPointF &point);
void doubleClicked(const QPointF &point);
public Q_SLOTS:
void handleUpdated();
void handleDomainUpdated();
private:
QAreaSeries *m_series;
LineChartItem *m_upper;
LineChartItem *m_lower;
QPainterPath m_path;
QRectF m_rect;
QPen m_linePen;
QPen m_pointPen;
QBrush m_brush;
bool m_pointsVisible;
bool m_pointLabelsVisible;
QString m_pointLabelsFormat;
QFont m_pointLabelsFont;
QColor m_pointLabelsColor;
QPointF m_lastMousePos;
bool m_mousePressed;
};
class AreaBoundItem : public LineChartItem
{
public:
AreaBoundItem(AreaChartItem *area, QLineSeries *lineSeries,QGraphicsItem* item = 0)
: LineChartItem(lineSeries, item), m_item(area)
{
// We do not actually want to draw anything from LineChartItem.
// Drawing is done in AreaChartItem only.
setVisible(false);
}
~AreaBoundItem() {}
void updateGeometry()
{
// Turn off points drawing from component line chart item, as that
// messes up the fill for area series.
suppressPoints();
// Component lineseries are not necessarily themselves on the chart,
// so get the chart type for them from area chart.
forceChartType(m_item->series()->chart()->chartType());
LineChartItem::updateGeometry();
m_item->updatePath();
}
private:
AreaChartItem *m_item;
};
QT_CHARTS_END_NAMESPACE
#endif
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