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 SCATTERCHARTITEM_H 40 #define SCATTERCHARTITEM_H 41 42 #include <QtCharts/QChartGlobal> 43 #include <private/xychart_p.h> 44 #include <QtWidgets/QGraphicsEllipseItem> 45 #include <QtGui/QPen> 46 #include <QtWidgets/QGraphicsSceneMouseEvent> 47 #include <QtCharts/private/qchartglobal_p.h> 48 49 QT_CHARTS_BEGIN_NAMESPACE 50 51 class QScatterSeries; 52 53 class Q_CHARTS_PRIVATE_EXPORT ScatterChartItem : public XYChart 54 { 55 Q_OBJECT 56 Q_INTERFACES(QGraphicsItem) 57 public: 58 explicit ScatterChartItem(QScatterSeries *series, QGraphicsItem *item = 0); 59 60 public: 61 //from QGraphicsItem 62 QRectF boundingRect() const; 63 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget); 64 65 void setPen(const QPen &pen); 66 void setBrush(const QBrush &brush); 67 68 void markerSelected(QGraphicsItem *item); 69 void markerHovered(QGraphicsItem *item, bool state); 70 void markerPressed(QGraphicsItem *item); 71 void markerReleased(QGraphicsItem *item); 72 void markerDoubleClicked(QGraphicsItem *item); 73 74 void setMousePressed(bool pressed = true) {m_mousePressed = pressed;} mousePressed()75 bool mousePressed() {return m_mousePressed;} 76 77 78 public Q_SLOTS: 79 void handleUpdated(); 80 81 private: 82 void createPoints(int count); 83 void deletePoints(int count); 84 85 protected: 86 void updateGeometry(); 87 88 private: 89 QScatterSeries *m_series; 90 QGraphicsItemGroup m_items; 91 bool m_visible; 92 int m_shape; 93 int m_size; 94 QRectF m_rect; 95 QMap<QGraphicsItem *, QPointF> m_markerMap; 96 97 bool m_pointLabelsVisible; 98 QString m_pointLabelsFormat; 99 QFont m_pointLabelsFont; 100 QColor m_pointLabelsColor; 101 bool m_pointLabelsClipping; 102 103 bool m_mousePressed; 104 }; 105 106 class Q_CHARTS_PRIVATE_EXPORT CircleMarker: public QGraphicsEllipseItem 107 { 108 109 public: CircleMarker(qreal x,qreal y,qreal w,qreal h,ScatterChartItem * parent)110 CircleMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent) 111 : QGraphicsEllipseItem(x, y, w, h, parent), 112 m_parent(parent) 113 { 114 setAcceptHoverEvents(true); 115 setFlag(QGraphicsItem::ItemIsSelectable); 116 } 117 118 protected: mousePressEvent(QGraphicsSceneMouseEvent * event)119 void mousePressEvent(QGraphicsSceneMouseEvent *event) 120 { 121 QGraphicsEllipseItem::mousePressEvent(event); 122 m_parent->markerPressed(this); 123 m_parent->setMousePressed(); 124 } hoverEnterEvent(QGraphicsSceneHoverEvent * event)125 void hoverEnterEvent(QGraphicsSceneHoverEvent *event) 126 { 127 QGraphicsEllipseItem::hoverEnterEvent(event); 128 m_parent->markerHovered(this, true); 129 } hoverLeaveEvent(QGraphicsSceneHoverEvent * event)130 void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) 131 { 132 QGraphicsEllipseItem::hoverLeaveEvent(event); 133 m_parent->markerHovered(this, false); 134 } mouseReleaseEvent(QGraphicsSceneMouseEvent * event)135 void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) 136 { 137 QGraphicsEllipseItem::mouseReleaseEvent(event); 138 m_parent->markerReleased(this); 139 if (m_parent->mousePressed()) 140 m_parent->markerSelected(this); 141 m_parent->setMousePressed(false); 142 } mouseDoubleClickEvent(QGraphicsSceneMouseEvent * event)143 void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) 144 { 145 QGraphicsEllipseItem::mouseDoubleClickEvent(event); 146 m_parent->markerDoubleClicked(this); 147 } 148 149 private: 150 ScatterChartItem *m_parent; 151 }; 152 153 class Q_CHARTS_PRIVATE_EXPORT RectangleMarker: public QGraphicsRectItem 154 { 155 156 public: RectangleMarker(qreal x,qreal y,qreal w,qreal h,ScatterChartItem * parent)157 RectangleMarker(qreal x, qreal y, qreal w, qreal h, ScatterChartItem *parent) 158 : QGraphicsRectItem(x, y, w, h, parent), 159 m_parent(parent) 160 { 161 setAcceptHoverEvents(true); 162 setFlag(QGraphicsItem::ItemIsSelectable); 163 } 164 165 protected: mousePressEvent(QGraphicsSceneMouseEvent * event)166 void mousePressEvent(QGraphicsSceneMouseEvent *event) 167 { 168 QGraphicsRectItem::mousePressEvent(event); 169 m_parent->markerPressed(this); 170 m_parent->setMousePressed(); 171 } hoverEnterEvent(QGraphicsSceneHoverEvent * event)172 void hoverEnterEvent(QGraphicsSceneHoverEvent *event) 173 { 174 QGraphicsRectItem::hoverEnterEvent(event); 175 m_parent->markerHovered(this, true); 176 } hoverLeaveEvent(QGraphicsSceneHoverEvent * event)177 void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) 178 { 179 QGraphicsRectItem::hoverLeaveEvent(event); 180 m_parent->markerHovered(this, false); 181 } mouseReleaseEvent(QGraphicsSceneMouseEvent * event)182 void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) 183 { 184 QGraphicsRectItem::mouseReleaseEvent(event); 185 m_parent->markerReleased(this); 186 if (m_parent->mousePressed()) 187 m_parent->markerSelected(this); 188 m_parent->setMousePressed(false); 189 } mouseDoubleClickEvent(QGraphicsSceneMouseEvent * event)190 void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) 191 { 192 QGraphicsRectItem::mouseDoubleClickEvent(event); 193 m_parent->markerDoubleClicked(this); 194 } 195 196 private: 197 ScatterChartItem *m_parent; 198 }; 199 200 QT_CHARTS_END_NAMESPACE 201 202 #endif // SCATTERPRESENTER_H 203