Engauge Digitizer 2
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GraphicsPointPolygon.h
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1/******************************************************************************************************
2 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released *
3 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
4 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission. *
5 ******************************************************************************************************/
6
7#ifndef GRAPHICS_POINT_POLYGON_H
8#define GRAPHICS_POINT_POLYGON_H
9
10#include <QGraphicsPolygonItem>
11#include <QObject>
12#include <QPointF>
13
14class GraphicsPoint;
15
17class GraphicsPointPolygon : public QObject, public QGraphicsPolygonItem
18{
20
21public:
24 const QPolygonF &polygon);
25
28
31
34
36 void setRadius(int radius);
37
40
42
45
48
49private:
51
52 void setOpacityForSubtree (double opacity);
53
54 // Reference to the GraphicsPoint that this class belongs to
55 GraphicsPoint &m_graphicsPoint;
56
57 GraphicsPointPolygon *m_shadow;
58};
59
60#endif // GRAPHICS_POINT_POLYGON_H
const int INNER_RADIUS_MIN
This class add event handling to QGraphicsPolygonItem.
void setRadius(int radius)
Update the radius.
virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
Unhighlight this point.
virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event)
Accept hover so point can be highlighted when cursor is over it as a guide to user.
QVariant itemChange(GraphicsItemChange change, const QVariant &value)
Intercept moves by dragging so moved items can be identified. This replaces unreliable hit tests.
void signalPointHoverEnter(QString)
Signal for geometry window to highlight the current point upon hover enter.
void signalPointHoverLeave(QString)
Signal for geometry window to unhighlight the current point upon hover leave.
void setShadow(GraphicsPointPolygon *shadow)
Bind this graphics item to its shadow.
Graphics item for drawing a circular or polygonal Point.