| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #ifndef QQUICKLOADER_P_P_H |
| 5 | #define QQUICKLOADER_P_P_H |
| 6 | |
| 7 | // |
| 8 | // W A R N I N G |
| 9 | // ------------- |
| 10 | // |
| 11 | // This file is not part of the Qt API. It exists purely as an |
| 12 | // implementation detail. This header file may change from version to |
| 13 | // version without notice, or even be removed. |
| 14 | // |
| 15 | // We mean it. |
| 16 | // |
| 17 | |
| 18 | #include "qquickloader_p.h" |
| 19 | #include "qquickimplicitsizeitem_p_p.h" |
| 20 | #include "qquickitemchangelistener_p.h" |
| 21 | #include <qqmlincubator.h> |
| 22 | |
| 23 | #include <private/qv4staticvalue_p.h> |
| 24 | #include <private/qv4persistent_p.h> |
| 25 | |
| 26 | QT_BEGIN_NAMESPACE |
| 27 | |
| 28 | |
| 29 | class QQuickLoaderPrivate; |
| 30 | class QQmlV4Function; |
| 31 | class QQuickLoaderIncubator : public QQmlIncubator |
| 32 | { |
| 33 | public: |
| 34 | QQuickLoaderIncubator(QQuickLoaderPrivate *l, IncubationMode mode) : QQmlIncubator(mode), loader(l) {} |
| 35 | |
| 36 | protected: |
| 37 | void statusChanged(Status) override; |
| 38 | void setInitialState(QObject *) override; |
| 39 | |
| 40 | private: |
| 41 | QQuickLoaderPrivate *loader; |
| 42 | }; |
| 43 | |
| 44 | class QQmlContext; |
| 45 | class QQuickLoaderPrivate : public QQuickImplicitSizeItemPrivate, public QQuickItemChangeListener |
| 46 | { |
| 47 | Q_DECLARE_PUBLIC(QQuickLoader) |
| 48 | |
| 49 | public: |
| 50 | QQuickLoaderPrivate(); |
| 51 | ~QQuickLoaderPrivate(); |
| 52 | |
| 53 | void itemGeometryChanged(QQuickItem *item, QQuickGeometryChange change, const QRectF &oldGeometry) override; |
| 54 | void itemImplicitWidthChanged(QQuickItem *) override; |
| 55 | void itemImplicitHeightChanged(QQuickItem *) override; |
| 56 | void clear(); |
| 57 | void initResize(); |
| 58 | void load(); |
| 59 | |
| 60 | void incubatorStateChanged(QQmlIncubator::Status status); |
| 61 | void setInitialState(QObject *o); |
| 62 | void disposeInitialPropertyValues(); |
| 63 | QQuickLoader::Status computeStatus() const; |
| 64 | void updateStatus(); |
| 65 | void createComponent(); |
| 66 | |
| 67 | qreal getImplicitWidth() const override; |
| 68 | qreal getImplicitHeight() const override; |
| 69 | |
| 70 | QUrl source; |
| 71 | QQuickItem *item; |
| 72 | QObject *object; |
| 73 | QQmlStrongJSQObjectReference<QQmlComponent> component; |
| 74 | QQmlContext *itemContext; |
| 75 | QQuickLoaderIncubator *incubator; |
| 76 | QV4::PersistentValue initialPropertyValues; |
| 77 | QV4::PersistentValue qmlCallingContext; |
| 78 | bool updatingSize: 1; |
| 79 | bool active : 1; |
| 80 | bool loadingFromSource : 1; |
| 81 | bool asynchronous : 1; |
| 82 | // We need to use char instead of QQuickLoader::Status |
| 83 | // as otherwise the size of the class would increase |
| 84 | // on 32-bit systems, as sizeof(Status) == sizeof(int) |
| 85 | // and sizeof(int) > remaining padding on 32 bit |
| 86 | char status; |
| 87 | |
| 88 | void _q_sourceLoaded(); |
| 89 | void _q_updateSize(bool loaderGeometryChanged = true); |
| 90 | }; |
| 91 | |
| 92 | QT_END_NAMESPACE |
| 93 | |
| 94 | #endif // QQUICKLOADER_P_P_H |
| 95 |