| 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 QQuickLoaderIncubator : public QQmlIncubator |
|---|
| 31 | { |
|---|
| 32 | public: |
|---|
| 33 | QQuickLoaderIncubator(QQuickLoaderPrivate *l, IncubationMode mode) : QQmlIncubator(mode), loader(l) {} |
|---|
| 34 | |
|---|
| 35 | protected: |
|---|
| 36 | void statusChanged(Status) override; |
|---|
| 37 | void setInitialState(QObject *) override; |
|---|
| 38 | |
|---|
| 39 | private: |
|---|
| 40 | QQuickLoaderPrivate *loader; |
|---|
| 41 | }; |
|---|
| 42 | |
|---|
| 43 | class QQmlContext; |
|---|
| 44 | class QQuickLoaderPrivate : public QQuickImplicitSizeItemPrivate, public QQuickItemChangeListener |
|---|
| 45 | { |
|---|
| 46 | Q_DECLARE_PUBLIC(QQuickLoader) |
|---|
| 47 | |
|---|
| 48 | public: |
|---|
| 49 | QQuickLoaderPrivate(); |
|---|
| 50 | ~QQuickLoaderPrivate(); |
|---|
| 51 | |
|---|
| 52 | void itemGeometryChanged(QQuickItem *item, QQuickGeometryChange change, const QRectF &oldGeometry) override; |
|---|
| 53 | void itemImplicitWidthChanged(QQuickItem *) override; |
|---|
| 54 | void itemImplicitHeightChanged(QQuickItem *) override; |
|---|
| 55 | void clear(); |
|---|
| 56 | void initResize(); |
|---|
| 57 | void load(); |
|---|
| 58 | |
|---|
| 59 | void incubatorStateChanged(QQmlIncubator::Status status); |
|---|
| 60 | void setInitialState(QObject *o); |
|---|
| 61 | void disposeInitialPropertyValues(); |
|---|
| 62 | QQuickLoader::Status computeStatus() const; |
|---|
| 63 | void updateStatus(); |
|---|
| 64 | void createComponent(); |
|---|
| 65 | |
|---|
| 66 | qreal getImplicitWidth() const override; |
|---|
| 67 | qreal getImplicitHeight() const override; |
|---|
| 68 | |
|---|
| 69 | QUrl source; |
|---|
| 70 | QQuickItem *item; |
|---|
| 71 | QObject *object; |
|---|
| 72 | QQmlStrongJSQObjectReference<QQmlComponent> component; |
|---|
| 73 | QQmlContext *itemContext; |
|---|
| 74 | QQuickLoaderIncubator *incubator; |
|---|
| 75 | QV4::PersistentValue initialPropertyValues; |
|---|
| 76 | QV4::PersistentValue qmlCallingContext; |
|---|
| 77 | bool updatingSize: 1; |
|---|
| 78 | bool active : 1; |
|---|
| 79 | bool loadingFromSource : 1; |
|---|
| 80 | bool asynchronous : 1; |
|---|
| 81 | // We need to use char instead of QQuickLoader::Status |
|---|
| 82 | // as otherwise the size of the class would increase |
|---|
| 83 | // on 32-bit systems, as sizeof(Status) == sizeof(int) |
|---|
| 84 | // and sizeof(int) > remaining padding on 32 bit |
|---|
| 85 | char status; |
|---|
| 86 | |
|---|
| 87 | void _q_sourceLoaded(); |
|---|
| 88 | void _q_updateSize(bool loaderGeometryChanged = true); |
|---|
| 89 | }; |
|---|
| 90 | |
|---|
| 91 | QT_END_NAMESPACE |
|---|
| 92 | |
|---|
| 93 | #endif // QQUICKLOADER_P_P_H |
|---|
| 94 | |
|---|
