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39
40#ifndef QQUICKLOADER_P_H
41#define QQUICKLOADER_P_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
54#include "qquickimplicitsizeitem_p.h"
55
56QT_BEGIN_NAMESPACE
57
58class QQuickLoaderPrivate;
59class Q_AUTOTEST_EXPORT QQuickLoader : public QQuickImplicitSizeItem
60{
61 Q_OBJECT
62
63 Q_PROPERTY(bool active READ active WRITE setActive NOTIFY activeChanged)
64 Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
65 Q_PROPERTY(QQmlComponent *sourceComponent READ sourceComponent WRITE setSourceComponent RESET resetSourceComponent NOTIFY sourceComponentChanged)
66 Q_PROPERTY(QObject *item READ item NOTIFY itemChanged)
67 Q_PROPERTY(Status status READ status NOTIFY statusChanged)
68 Q_PROPERTY(qreal progress READ progress NOTIFY progressChanged)
69 Q_PROPERTY(bool asynchronous READ asynchronous WRITE setAsynchronous NOTIFY asynchronousChanged)
70 QML_NAMED_ELEMENT(Loader)
71
72public:
73 QQuickLoader(QQuickItem *parent = nullptr);
74 virtual ~QQuickLoader();
75
76 bool active() const;
77 void setActive(bool newVal);
78
79 Q_INVOKABLE void setSource(QQmlV4Function *);
80
81 QUrl source() const;
82 void setSource(const QUrl &);
83
84 QQmlComponent *sourceComponent() const;
85 void setSourceComponent(QQmlComponent *);
86 void resetSourceComponent();
87
88 enum Status { Null, Ready, Loading, Error };
89 Q_ENUM(Status)
90 Status status() const;
91 qreal progress() const;
92
93 bool asynchronous() const;
94 void setAsynchronous(bool a);
95
96 QObject *item() const;
97
98Q_SIGNALS:
99 void itemChanged();
100 void activeChanged();
101 void sourceChanged();
102 void sourceComponentChanged();
103 void statusChanged();
104 void progressChanged();
105 void loaded();
106 void asynchronousChanged();
107
108protected:
109 void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) override;
110 void componentComplete() override;
111 void itemChange(ItemChange change, const ItemChangeData &value) override;
112
113private:
114 void setSource(const QUrl &sourceUrl, bool needsClear);
115 void loadFromSource();
116 void loadFromSourceComponent();
117 Q_DISABLE_COPY(QQuickLoader)
118 Q_DECLARE_PRIVATE(QQuickLoader)
119 Q_PRIVATE_SLOT(d_func(), void _q_sourceLoaded())
120 Q_PRIVATE_SLOT(d_func(), void _q_updateSize())
121};
122
123QT_END_NAMESPACE
124
125QML_DECLARE_TYPE(QQuickLoader)
126
127#endif // QQUICKLOADER_P_H
128

source code of qtdeclarative/src/quick/items/qquickloader_p.h