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50
51#ifndef MASKEDMOUSEAREA_H
52#define MASKEDMOUSEAREA_H
53
54#include <QImage>
55#include <QQuickItem>
56
57
58class MaskedMouseArea : public QQuickItem
59{
60 Q_OBJECT
61 Q_PROPERTY(bool pressed READ isPressed NOTIFY pressedChanged)
62 Q_PROPERTY(bool containsMouse READ containsMouse NOTIFY containsMouseChanged)
63 Q_PROPERTY(QUrl maskSource READ maskSource WRITE setMaskSource NOTIFY maskSourceChanged)
64 Q_PROPERTY(qreal alphaThreshold READ alphaThreshold WRITE setAlphaThreshold NOTIFY alphaThresholdChanged)
65 QML_ELEMENT
66
67public:
68 MaskedMouseArea(QQuickItem *parent = 0);
69
70 bool contains(const QPointF &point) const;
71
72 bool isPressed() const { return m_pressed; }
73 bool containsMouse() const { return m_containsMouse; }
74
75 QUrl maskSource() const { return m_maskSource; }
76 void setMaskSource(const QUrl &source);
77
78 qreal alphaThreshold() const { return m_alphaThreshold; }
79 void setAlphaThreshold(qreal threshold);
80
81signals:
82 void pressed();
83 void released();
84 void clicked();
85 void canceled();
86 void pressedChanged();
87 void maskSourceChanged();
88 void containsMouseChanged();
89 void alphaThresholdChanged();
90
91protected:
92 void setPressed(bool pressed);
93 void setContainsMouse(bool containsMouse);
94 void mousePressEvent(QMouseEvent *event);
95 void mouseReleaseEvent(QMouseEvent *event);
96 void hoverEnterEvent(QHoverEvent *event);
97 void hoverLeaveEvent(QHoverEvent *event);
98 void mouseUngrabEvent();
99
100private:
101 bool m_pressed;
102 QUrl m_maskSource;
103 QImage m_maskImage;
104 QPointF m_pressPoint;
105 qreal m_alphaThreshold;
106 bool m_containsMouse;
107};
108
109#endif
110

source code of qtdeclarative/examples/quick/customitems/maskedmousearea/maskedmousearea.h