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50
51 #include "widget.h"
52 #include "helper.h"
53
54 #include <QPainter>
55 #include <QTimer>
56
57 //! [0]
Widget(Helper * helper,QWidget * parent)58 Widget::Widget(Helper *helper, QWidget *parent)
59 : QWidget(parent), helper(helper)
60 {
61 elapsed = 0;
62 setFixedSize(200, 200);
63 }
64 //! [0]
65
66 //! [1]
animate()67 void Widget::animate()
68 {
69 elapsed = (elapsed + qobject_cast<QTimer*>(sender())->interval()) % 1000;
70 update();
71 }
72 //! [1]
73
74 //! [2]
paintEvent(QPaintEvent * event)75 void Widget::paintEvent(QPaintEvent *event)
76 {
77 QPainter painter;
78 painter.begin(this);
79 painter.setRenderHint(QPainter::Antialiasing);
80 helper->paint(&painter, event, elapsed);
81 painter.end();
82 }
83 //! [2]
84