QQuickView Class
The QQuickView class provides a window for displaying a Qt Quick user interface. More...
| Header: | #include <QQuickView> |
| qmake: | QT += quick |
| Since: | Qt 5.0 |
| Inherits: | QQuickWindow. |
| Inherited By: |
Public Types
| enum | ResizeMode { SizeViewToRootObject, SizeRootObjectToView } |
| enum | Status { Null, Ready, Loading, Error } |
Properties
- resizeMode : ResizeMode
- source : QUrl
- status : const Status
- 3 properties inherited from QQuickWindow
- 16 properties inherited from QWindow
- 1 property inherited from QObject
Public Functions
| QQuickView(QWindow * parent = 0) | |
| QQuickView(QQmlEngine * engine, QWindow * parent) | |
| QQuickView(const QUrl & source, QWindow * parent = 0) | |
| virtual | ~QQuickView() |
| QQmlEngine * | engine() const |
| QList<QQmlError> | errors() const |
| QSize | initialSize() const |
| ResizeMode | resizeMode() const |
| QQmlContext * | rootContext() const |
| QQuickItem * | rootObject() const |
| void | setResizeMode(ResizeMode) |
| QUrl | source() const |
| Status | status() const |
- 27 public functions inherited from QQuickWindow
- 78 public functions inherited from QWindow
- 31 public functions inherited from QObject
- 6 public functions inherited from QSurface
Public Slots
| void | setSource(const QUrl & url) |
- 2 public slots inherited from QQuickWindow
- 21 public slots inherited from QWindow
- 1 public slot inherited from QObject
Signals
| void | statusChanged(QQuickView::Status status) |
- 14 signals inherited from QQuickWindow
- 18 signals inherited from QWindow
- 2 signals inherited from QObject
Reimplemented Protected Functions
| virtual void | keyPressEvent(QKeyEvent * e) |
| virtual void | keyReleaseEvent(QKeyEvent * e) |
| virtual void | mouseMoveEvent(QMouseEvent * e) |
| virtual void | mousePressEvent(QMouseEvent * e) |
| virtual void | mouseReleaseEvent(QMouseEvent * e) |
- 14 protected functions inherited from QQuickWindow
- 18 protected functions inherited from QWindow
- 9 protected functions inherited from QObject
Additional Inherited Members
- 2 static public members inherited from QQuickWindow
- 1 static public member inherited from QWindow
- 11 static public members inherited from QObject
- 14 protected functions inherited from QQuickWindow
- 18 protected functions inherited from QWindow
- 9 protected functions inherited from QObject
Detailed Description
The QQuickView class provides a window for displaying a Qt Quick user interface.
This is a convenience subclass of QQuickWindow which will automatically load and display a QML scene when given the URL of the main source file. Alternatively, you can instantiate your own objects using QQmlComponent and place them in a manually setup QQuickWindow.
Typical usage:
QQuickView *view = new QQuickView; view->setSource(QUrl::fromLocalFile("myqmlfile.qml")); view->show();
To receive errors related to loading and executing QML with QQuickView, you can connect to the statusChanged() signal and monitor for QQuickView::Error. The errors are available via QQuickView::errors().
QQuickView also manages sizing of the view and root object. By default, the resizeMode is SizeViewToRootObject, which will load the component and resize it to the size of the view. Alternatively the resizeMode may be set to SizeRootObjectToView which will resize the view to the size of the root object.
See also Exposing Attributes of C++ Types to QML and QQuickWidget.
Member Type Documentation
enum QQuickView::ResizeMode
This enum specifies how to resize the view.
| Constant | Value | Description |
|---|---|---|
QQuickView::SizeViewToRootObject | 0 | The view resizes with the root item in the QML. |
QQuickView::SizeRootObjectToView | 1 | The view will automatically resize the root item to the size of the view. |
enum QQuickView::Status
Specifies the loading status of the QQuickView.
| Constant | Value | Description |
|---|---|---|
QQuickView::Null | 0 | This QQuickView has no source set. |
QQuickView::Ready | 1 | This QQuickView has loaded and created the QML component. |
QQuickView::Loading | 2 | This QQuickView is loading network data. |
QQuickView::Error | 3 | One or more errors has occurred. Call errors() to retrieve a list of errors. |
Property Documentation
resizeMode : ResizeMode
This property holds whether the view should resize the window contents.
If this property is set to SizeViewToRootObject (the default), the view resizes to the size of the root item in the QML.
If this property is set to SizeRootObjectToView, the view will automatically resize the root item to the size of the view.
Regardless of this property, the sizeHint of the view is the initial size of the root item. Note though that since QML may load dynamically, that size may change.
Access functions:
| ResizeMode | resizeMode() const |
| void | setResizeMode(ResizeMode) |
See also initialSize().
source : QUrl
This property holds the URL of the source of the QML component.
Ensure that the URL provided is full and correct, in particular, use QUrl::fromLocalFile() when loading a file from the local filesystem.
Note that setting a source URL will result in the QML component being instantiated, even if the URL is unchanged from the current value.
Access functions:
| QUrl | source() const |
| void | setSource(const QUrl & url) |
status : const Status
The component's current status.
Access functions:
| Status | status() const |
Notifier signal:
| void | statusChanged(QQuickView::Status status) |
Member Function Documentation
QQuickView::QQuickView(QWindow * parent = 0)
Constructs a QQuickView with the given parent. The default value of parent is 0.
QQuickView::QQuickView(QQmlEngine * engine, QWindow * parent)
Constructs a QQuickView with the given QML engine and parent.
Note: In this case, the QQuickView does not own the given engine object; it is the caller's responsibility to destroy the engine. If the engine is deleted before the view, status() will return QQuickView::Error.
See also Status, status(), and errors().
QQuickView::QQuickView(const QUrl & source, QWindow * parent = 0)
Constructs a QQuickView with the given QML source and parent. The default value of parent is 0.
[virtual] QQuickView::~QQuickView()
Destroys the QQuickView.
QQmlEngine * QQuickView::engine() const
Returns a pointer to the QQmlEngine used for instantiating QML Components.
QList<QQmlError> QQuickView::errors() const
Return the list of errors that occurred during the last compile or create operation. When the status is not Error, an empty list is returned.
QSize QQuickView::initialSize() const
Returns the initial size of the root object.
If resizeMode is QQuickItem::SizeRootObjectToView the root object will be resized to the size of the view. initialSize contains the size of the root object before it was resized.
[virtual protected] void QQuickView::keyPressEvent(QKeyEvent * e)
Reimplemented from QWindow::keyPressEvent().
[virtual protected] void QQuickView::keyReleaseEvent(QKeyEvent * e)
Reimplemented from QWindow::keyReleaseEvent().
[virtual protected] void QQuickView::mouseMoveEvent(QMouseEvent * e)
Reimplemented from QWindow::mouseMoveEvent().
[virtual protected] void QQuickView::mousePressEvent(QMouseEvent * e)
Reimplemented from QWindow::mousePressEvent().
[virtual protected] void QQuickView::mouseReleaseEvent(QMouseEvent * e)
Reimplemented from QWindow::mouseReleaseEvent().
QQmlContext * QQuickView::rootContext() const
This function returns the root of the context hierarchy. Each QML component is instantiated in a QQmlContext. QQmlContext's are essential for passing data to QML components. In QML, contexts are arranged hierarchically and this hierarchy is managed by the QQmlEngine.
QQuickItem * QQuickView::rootObject() const
Returns the view's root item.
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