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39
40#ifndef MASKEXTRUDER_H
41#define MASKEXTRUDER_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53#include "qquickparticleextruder_p.h"
54#include <private/qquickpixmapcache_p.h>
55#include <QUrl>
56#include <QImage>
57
58QT_BEGIN_NAMESPACE
59
60class QQuickMaskExtruder : public QQuickParticleExtruder
61{
62 Q_OBJECT
63 Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
64 QML_NAMED_ELEMENT(MaskShape)
65public:
66 explicit QQuickMaskExtruder(QObject *parent = 0);
67 QPointF extrude(const QRectF &) override;
68 bool contains(const QRectF &bounds, const QPointF &point) override;
69
70 QUrl source() const
71 {
72 return m_source;
73 }
74
75Q_SIGNALS:
76
77 void sourceChanged(const QUrl &arg);
78
79public Q_SLOTS:
80 void setSource(const QUrl &arg);
81
82private Q_SLOTS:
83 void startMaskLoading();
84 void finishMaskLoading();
85
86private:
87 QUrl m_source;
88
89 void ensureInitialized(const QRectF &r);
90 int m_lastWidth;
91 int m_lastHeight;
92 QQuickPixmap m_pix;
93 QImage m_img;
94 QList<QPointF> m_mask;//TODO: More memory efficient datastructures
95 //Perhaps just the mask for the largest bounds is stored, and interpolate up
96};
97
98QT_END_NAMESPACE
99
100#endif // MASKEXTRUDER_H
101

source code of qtdeclarative/src/particles/qquickmaskextruder_p.h