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zoomButton.hh
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5 * Department of Computer Graphics and Multimedia *
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40 \*===========================================================================*/
41
42 /*===========================================================================*\
43 * *
44 * $Revision$ *
45 * $LastChangedBy$ *
46 * $Date$ *
47 * *
48 \*===========================================================================*/
49
50 #ifndef VSI_ZOOMBUTTON_HH
51 #define VSI_ZOOMBUTTON_HH
52
53 //== INCLUDES =================================================================
54 #include <QGraphicsPixmapItem>
55 #include <QGraphicsLayoutItem>
56 #include <QString>
57 #include <QTimer>
58
59 //== NAMESPACES ===============================================================
60 namespace VSI {
61
62 //== FORWARDDECLARATIONS ======================================================
63 class GraphicsScene;
64
66 class ZoomButton : public QObject, public QGraphicsPixmapItem, public QGraphicsLayoutItem
67 {
68 Q_OBJECT
69 Q_INTERFACES(QGraphicsLayoutItem)
70
71 public:
72
74 enum Type
75 {
76 In,
77 Out
78 };
79
80 public:
81
83 ZoomButton (GraphicsScene *_scene, QGraphicsItem *_parent, Type _type);
84
86 ~ZoomButton ();
87
89 void activate (QPointF _pos);
90
92 void deactivate ();
93
95 virtual void setGeometry (const QRectF &_rect);
96
97 protected:
98 // catch mouse hover events
99 virtual void hoverEnterEvent (QGraphicsSceneHoverEvent *_event);
100 virtual void hoverLeaveEvent (QGraphicsSceneHoverEvent *_event);
101
102 // catch mouse press/release events
103 virtual void mousePressEvent (QGraphicsSceneMouseEvent *_event);
104 virtual void mouseReleaseEvent (QGraphicsSceneMouseEvent *_event);
105
106 // catch mouse wheel events
107 virtual void wheelEvent (QGraphicsSceneWheelEvent *_event);
108
109 // size information for layouting
110 virtual QSizeF sizeHint ( Qt::SizeHint _which, const QSizeF & _constraint = QSizeF()) const;
111
112 private slots:
113 void timeout ();
114
115 private:
116 GraphicsScene *scene_;
117
118 Type type_;
119
120 QTimer timer_;
121
122 QPointF pos_;
123 };
124
125 //=============================================================================
126 }
127 //=============================================================================
128
129 #endif
VSI
Definition: baseWidget.cc:78
VSI::ZoomButton::setGeometry
virtual void setGeometry(const QRectF &_rect)
Sets the geometry.
Definition: zoomButton.cc:206
VSI::ZoomButton::deactivate
void deactivate()
Stop the timer.
Definition: zoomButton.cc:197
VSI::ZoomButton::~ZoomButton
~ZoomButton()
Destructor.
Definition: zoomButton.cc:97
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:186
VSI::GraphicsScene
Definition: graphicsScene.hh:86
VSI::ZoomButton::Type
Type
Zoom type.
Definition: zoomButton.hh:74
VSI::ZoomButton
Scene zoom in/out widget.
Definition: zoomButton.hh:66
VSI::Type
Definition: type.hh:71
VSI::ZoomButton::ZoomButton
ZoomButton(GraphicsScene *_scene, QGraphicsItem *_parent, Type _type)
Constructor.
Definition: zoomButton.cc:70