| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QQUICKLOADER_P_H |
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| 5 | #define QQUICKLOADER_P_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists purely as an |
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| 12 | // implementation detail. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | #include "qquickimplicitsizeitem_p.h" |
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| 19 | |
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| 20 | QT_BEGIN_NAMESPACE |
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| 21 | |
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| 22 | class QQuickLoaderPrivate; |
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| 23 | class Q_QUICK_EXPORT QQuickLoader : public QQuickImplicitSizeItem |
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| 24 | { |
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| 25 | Q_OBJECT |
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| 26 | |
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| 27 | Q_PROPERTY(bool active READ active WRITE setActive NOTIFY activeChanged) |
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| 28 | Q_PROPERTY(QUrl source READ source WRITE setSourceWithoutResolve NOTIFY sourceChanged) |
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| 29 | Q_PROPERTY(QQmlComponent *sourceComponent READ sourceComponent WRITE setSourceComponent RESET resetSourceComponent NOTIFY sourceComponentChanged) |
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| 30 | Q_PROPERTY(QObject *item READ item NOTIFY itemChanged) |
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| 31 | Q_PROPERTY(Status status READ status NOTIFY statusChanged) |
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| 32 | Q_PROPERTY(qreal progress READ progress NOTIFY progressChanged) |
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| 33 | Q_PROPERTY(bool asynchronous READ asynchronous WRITE setAsynchronous NOTIFY asynchronousChanged) |
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| 34 | QML_NAMED_ELEMENT(Loader) |
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| 35 | QML_ADDED_IN_VERSION(2, 0) |
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| 36 | |
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| 37 | public: |
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| 38 | QQuickLoader(QQuickItem *parent = nullptr); |
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| 39 | virtual ~QQuickLoader(); |
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| 40 | |
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| 41 | bool active() const; |
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| 42 | void setActive(bool newVal); |
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| 43 | |
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| 44 | Q_INVOKABLE void setSource(const QUrl &source, QJSValue initialProperties); |
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| 45 | Q_INVOKABLE void setSource(const QUrl &source); |
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| 46 | |
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| 47 | QUrl source() const; |
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| 48 | void setSourceWithoutResolve(const QUrl &source); |
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| 49 | |
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| 50 | QQmlComponent *sourceComponent() const; |
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| 51 | void setSourceComponent(QQmlComponent *); |
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| 52 | void resetSourceComponent(); |
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| 53 | |
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| 54 | enum Status { Null, Ready, Loading, Error }; |
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| 55 | Q_ENUM(Status) |
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| 56 | Status status() const; |
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| 57 | qreal progress() const; |
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| 58 | |
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| 59 | bool asynchronous() const; |
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| 60 | void setAsynchronous(bool a); |
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| 61 | |
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| 62 | QObject *item() const; |
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| 63 | |
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| 64 | Q_SIGNALS: |
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| 65 | void itemChanged(); |
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| 66 | void activeChanged(); |
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| 67 | void sourceChanged(); |
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| 68 | void sourceComponentChanged(); |
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| 69 | void statusChanged(); |
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| 70 | void progressChanged(); |
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| 71 | void loaded(); |
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| 72 | void asynchronousChanged(); |
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| 73 | |
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| 74 | protected: |
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| 75 | void geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry) override; |
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| 76 | void componentComplete() override; |
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| 77 | void itemChange(ItemChange change, const ItemChangeData &value) override; |
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| 78 | |
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| 79 | private: |
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| 80 | QUrl setSourceUrlHelper(const QUrl &unresolvedUrl); |
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| 81 | void setSource(const QUrl &sourceUrl, bool needsClear); |
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| 82 | void loadFromSource(); |
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| 83 | void loadFromSourceComponent(); |
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| 84 | Q_DISABLE_COPY(QQuickLoader) |
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| 85 | Q_DECLARE_PRIVATE(QQuickLoader) |
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| 86 | Q_PRIVATE_SLOT(d_func(), void _q_sourceLoaded()) |
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| 87 | Q_PRIVATE_SLOT(d_func(), void _q_updateSize()) |
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| 88 | }; |
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| 89 | |
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| 90 | QT_END_NAMESPACE |
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| 91 | |
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| 92 | #endif // QQUICKLOADER_P_H |
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| 93 | |
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