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/****************************************************************************
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**
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** Copyright (C) 2014 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 Enterprise Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Enterprise licenses may use this file in
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** accordance with the Qt Enterprise 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 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 SCATTERCHARTITEM_H
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#define SCATTERCHARTITEM_H
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#include <QtCharts/QChartGlobal>
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#include <private/xychart_p.h>
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#include <QtWidgets/QGraphicsEllipseItem>
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#include <QtGui/QPen>
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#include <QtWidgets/QGraphicsSceneMouseEvent>
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QT_CHARTS_BEGIN_NAMESPACE
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class QScatterSeries;
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class ScatterChartItem : public XYChart
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{
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Q_OBJECT
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Q_INTERFACES(QGraphicsItem)
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public:
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explicit ScatterChartItem(QScatterSeries *series, QGraphicsItem *item = 0);
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public:
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//from QGraphicsItem
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QRectF boundingRect() const;
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
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void setPen(const QPen &pen);
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void setBrush(const QBrush &brush);
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void markerSelected(QGraphicsItem *item);
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void markerHovered(QGraphicsItem *item, bool state);
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void markerPressed(QGraphicsItem *item);
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void markerReleased(QGraphicsItem *item);
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void markerDoubleClicked(QGraphicsItem *item);
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void setLastMousePosition(const QPointF pos) {m_lastMousePos = pos;}
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QPointF lastMousePosition() const {return m_lastMousePos;}
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void setMousePressed(bool pressed = true) {m_mousePressed = pressed;}
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bool mousePressed() {return m_mousePressed;}
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public Q_SLOTS:
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void handleUpdated();
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private:
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void createPoints(int count);
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void deletePoints(int count);
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protected:
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void updateGeometry();
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private:
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QScatterSeries *m_series;
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QGraphicsItemGroup m_items;
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bool m_visible;
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int m_shape;
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int m_size;
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QRectF m_rect;
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QMap<QGraphicsItem *, QPointF> m_markerMap;
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bool m_pointLabelsVisible;
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QString m_pointLabelsFormat;
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QFont m_pointLabelsFont;
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QColor m_pointLabelsColor;
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QPointF m_lastMousePos;
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bool m_mousePressed;
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};
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class CircleMarker: public QGraphicsEllipseItem
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{
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public:
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CircleMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent)
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: QGraphicsEllipseItem(x, y, w, h, parent),
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m_parent(parent)
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{
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setAcceptHoverEvents(true);
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setFlag(QGraphicsItem::ItemIsSelectable);
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}
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protected:
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void mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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QGraphicsEllipseItem::mousePressEvent(event);
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m_parent->markerPressed(this);
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m_parent->setLastMousePosition(event->pos());
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m_parent->setMousePressed();
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}
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void hoverEnterEvent(QGraphicsSceneHoverEvent *event)
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{
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QGraphicsEllipseItem::hoverEnterEvent(event);
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m_parent->markerHovered(this, true);
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}
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void hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
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{
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QGraphicsEllipseItem::hoverLeaveEvent(event);
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m_parent->markerHovered(this, false);
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}
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void mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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QGraphicsEllipseItem::mouseReleaseEvent(event);
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m_parent->markerReleased(this);
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if (m_parent->lastMousePosition() == event->pos() && m_parent->mousePressed())
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m_parent->markerSelected(this);
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m_parent->setMousePressed(false);
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}
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void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
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{
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QGraphicsEllipseItem::mouseDoubleClickEvent(event);
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m_parent->markerDoubleClicked(this);
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}
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private:
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ScatterChartItem *m_parent;
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};
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class RectangleMarker: public QGraphicsRectItem
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{
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public:
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RectangleMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent)
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: QGraphicsRectItem(x, y, w, h, parent),
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m_parent(parent)
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{
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setAcceptHoverEvents(true);
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setFlag(QGraphicsItem::ItemIsSelectable);
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}
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protected:
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void mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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QGraphicsRectItem::mousePressEvent(event);
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m_parent->markerPressed(this);
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m_parent->setLastMousePosition(event->pos());
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m_parent->setMousePressed();
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}
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void hoverEnterEvent(QGraphicsSceneHoverEvent *event)
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{
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QGraphicsRectItem::hoverEnterEvent(event);
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m_parent->markerHovered(this, true);
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}
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void hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
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{
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QGraphicsRectItem::hoverLeaveEvent(event);
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m_parent->markerHovered(this, false);
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}
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void mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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QGraphicsRectItem::mouseReleaseEvent(event);
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m_parent->markerReleased(this);
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if (m_parent->lastMousePosition() == event->pos() && m_parent->mousePressed())
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m_parent->markerSelected(this);
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m_parent->setMousePressed(false);
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}
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void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
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{
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QGraphicsRectItem::mouseDoubleClickEvent(event);
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m_parent->markerDoubleClicked(this);
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}
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private:
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ScatterChartItem *m_parent;
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};
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QT_CHARTS_END_NAMESPACE
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#endif // SCATTERPRESENTER_H
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