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40
41 #include "imageitem.h"
42
43 //! [0]
ImageItem(int id,const QPixmap & pixmap,QGraphicsItem * parent,QGraphicsScene * scene)44 ImageItem::ImageItem(int id, const QPixmap &pixmap, QGraphicsItem *parent,
45 QGraphicsScene *scene)
46 : QGraphicsPixmapItem(pixmap, parent, scene)
47 {
48 recordId = id;
49 setAcceptsHoverEvents(true);
50
51 timeLine.setDuration(150);
52 timeLine.setFrameRange(0, 150);
53
54 connect(&timeLine, SIGNAL(frameChanged(int)), this, SLOT(setFrame(int)));
55 connect(&timeLine, SIGNAL(finished()), this, SLOT(updateItemPosition()));
56
57 adjust();
58 }
59 //! [0]
60
61 //! [1]
hoverEnterEvent(QGraphicsSceneHoverEvent *)62 void ImageItem::hoverEnterEvent(QGraphicsSceneHoverEvent * /*event*/)
63 {
64 timeLine.setDirection(QTimeLine::Forward);
65
66 if (z != 1.0) {
67 z = 1.0;
68 updateItemPosition();
69 }
70
71 if (timeLine.state() == QTimeLine::NotRunning)
72 timeLine.start();
73 }
74 //! [1]
75
76 //! [2]
hoverLeaveEvent(QGraphicsSceneHoverEvent *)77 void ImageItem::hoverLeaveEvent(QGraphicsSceneHoverEvent * /*event*/)
78 {
79 timeLine.setDirection(QTimeLine::Backward);
80 if (z != 0.0)
81 z = 0.0;
82
83 if (timeLine.state() == QTimeLine::NotRunning)
84 timeLine.start();
85 }
86 //! [2]
87
88 //! [3]
setFrame(int frame)89 void ImageItem::setFrame(int frame)
90 {
91 adjust();
92 QPointF center = boundingRect().center();
93
94 translate(center.x(), center.y());
95 scale(1 + frame / 330.0, 1 + frame / 330.0);
96 translate(-center.x(), -center.y());
97 }
98 //! [3]
99
100 //! [4]
adjust()101 void ImageItem::adjust()
102 {
103 QMatrix matrix;
104 matrix.scale(150/ boundingRect().width(), 120/ boundingRect().height());
105 setMatrix(matrix);
106 }
107 //! [4]
108
109 //! [5]
id()110 int ImageItem::id()
111 {
112 return recordId;
113 }
114 //! [5]
115
116 //! [6]
updateItemPosition()117 void ImageItem::updateItemPosition()
118 {
119 setZValue(z);
120 }
121 //! [6]
122
123
124