Developer Documentation

zoomButton.hh
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40 \*===========================================================================*/
41
42
43
44 #ifndef VSI_ZOOMBUTTON_HH
45 #define VSI_ZOOMBUTTON_HH
46
47 //== INCLUDES =================================================================
48 #include <QGraphicsPixmapItem>
49 #include <QGraphicsLayoutItem>
50 #include <QString>
51 #include <QTimer>
52
53 //== NAMESPACES ===============================================================
54 namespace VSI {
55
56 //== FORWARDDECLARATIONS ======================================================
57 class GraphicsScene;
58
60 class ZoomButton : public QObject, public QGraphicsPixmapItem, public QGraphicsLayoutItem
61 {
62 Q_OBJECT
63 Q_INTERFACES(QGraphicsLayoutItem)
64
65 public:
66
68 enum Type
69 {
70 In,
71 Out
72 };
73
74 public:
75
77 ZoomButton (GraphicsScene *_scene, QGraphicsItem *_parent, Type _type);
78
80 ~ZoomButton ();
81
83 void activate (QPointF _pos);
84
86 void deactivate ();
87
89 virtual void setGeometry (const QRectF &_rect);
90
91 protected:
92 // catch mouse hover events
93 virtual void hoverEnterEvent (QGraphicsSceneHoverEvent *_event);
94 virtual void hoverLeaveEvent (QGraphicsSceneHoverEvent *_event);
95
96 // catch mouse press/release events
97 virtual void mousePressEvent (QGraphicsSceneMouseEvent *_event);
98 virtual void mouseReleaseEvent (QGraphicsSceneMouseEvent *_event);
99
100 // catch mouse wheel events
101 virtual void wheelEvent (QGraphicsSceneWheelEvent *_event);
102
103 // size information for layouting
104 virtual QSizeF sizeHint ( Qt::SizeHint _which, const QSizeF & _constraint = QSizeF()) const;
105
106 private slots:
107 void timeout ();
108
109 private:
110 GraphicsScene *scene_;
111
112 Type type_;
113
114 QTimer timer_;
115
116 QPointF pos_;
117 };
118
119 //=============================================================================
120 }
121 //=============================================================================
122
123 #endif
VSI::ZoomButton::activate
void activate(QPointF _pos)
Activates the timer for zoom with center at _pos (will be called if an element is moved above) ...
Definition: zoomButton.cc:180
VSI::GraphicsScene
Definition: graphicsScene.hh:80
VSI::ZoomButton::~ZoomButton
~ZoomButton()
Destructor.
Definition: zoomButton.cc:91
VSI::ZoomButton::deactivate
void deactivate()
Stop the timer.
Definition: zoomButton.cc:191
VSI::ZoomButton::setGeometry
virtual void setGeometry(const QRectF &_rect)
Sets the geometry.
Definition: zoomButton.cc:200
VSI::ZoomButton::ZoomButton
ZoomButton(GraphicsScene *_scene, QGraphicsItem *_parent, Type _type)
Constructor.
Definition: zoomButton.cc:64
VSI::ZoomButton
Scene zoom in/out widget.
Definition: zoomButton.hh:60
VSI
Definition: baseWidget.cc:72
VSI::ZoomButton::Type
Type
Zoom type.
Definition: zoomButton.hh:68