QDeclarativeView Class Reference

The QDeclarativeView class provides a widget for displaying a Qt Declarative user interface. Далее...

 #include <QDeclarativeView>

Inherits: QGraphicsView.

Этот класс был введён в Qt 4.7.

Список всех членов, включая унаследованные

Открытые типы

enum	ResizeMode { SizeViewToRootObject, SizeRootObjectToView }
enum	Status { Null, Ready, Loading, Error }

Свойства

resizeMode : ResizeMode
source : QUrl
status : const Status

13 properties inherited from QGraphicsView
2 свойства, унаследованных от QAbstractScrollArea
6 свойств, унаследованных от QFrame
58 свойств, унаследованных от QWidget
1 свойство, унаследованное от QObject

Открытые функции

	QDeclarativeView ( QWidget * parent = 0 )
	QDeclarativeView ( const QUrl & source, QWidget * parent = 0 )
virtual	~QDeclarativeView ()
QDeclarativeEngine *	engine () const
QList<QDeclarativeError>	errors () const
QSize	initialSize () const
ResizeMode	resizeMode () const
QDeclarativeContext *	rootContext () const
QGraphicsObject *	rootObject () const
void	setResizeMode ( ResizeMode )
void	setSource ( const QUrl & url )
QUrl	source () const
Status	status () const

77 public functions inherited from QGraphicsView
17 открытых функций, унаследованных от QAbstractScrollArea
14 открытых функций, унаследованных от QFrame
221 открытая функция, унаследованная от QWidget
29 открытых функций, унаследованных от QObject
13 открытых функций, унаследованных от QPaintDevice

Сигналы

void	sceneResized ( QSize size )
void	statusChanged ( QDeclarativeView::Status status )

1 сигнал, унаследованный от QWidget
1 сигнал, унаследованный от QObject

Дополнительные унаследованные члены

3 public slots inherited from QGraphicsView
19 открытых слотов, унаследованных от QWidget
1 открытый слот, унаследованный от QObject
4 статических открытых члена, унаследованных от QWidget
7 статических открытых членов, унаследованных от QObject
24 protected functions inherited from QGraphicsView
18 защищенных функций, унаследованных от QAbstractScrollArea
3 защищенные функции, унаследованные от QFrame
37 защищенных функций, унаследованных от QWidget
8 защищенных функций, унаследованных от QObject
1 защищенная функция, унаследованная от QPaintDevice
1 protected slot inherited from QGraphicsView
1 защищенный слот, унаследованный от QAbstractScrollArea
1 защищенный слот, унаследованный от QWidget

Подробное описание

The QDeclarativeView class provides a widget for displaying a Qt Declarative user interface.

QDeclarativeItem objects can be placed on a standard QGraphicsScene and displayed with QGraphicsView. QDeclarativeView is a QGraphicsView subclass provided as a convenience for displaying QML files, and connecting between QML and C++ Qt objects.

QDeclarativeView provides:

Management of QDeclarativeComponent loading and object creation
Initialization of QGraphicsView for optimal performance with QML using these settings:
- QGraphicsView::setOptimizationFlags(QGraphicsView::DontSavePainterState)
- QGraphicsView::setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate)
- QGraphicsScene::setItemIndexMethod(QGraphicsScene::NoIndex)
Initialization of QGraphicsView for QML key handling using these settings:
- QGraphicsView::viewport()->setFocusPolicy(Qt::NoFocus)
- QGraphicsView::setFocusPolicy(Qt::StrongFocus)
- QGraphicsScene::setStickyFocus(true)

Typical usage:

 QDeclarativeView *view = new QDeclarativeView;
 view->setSource(QUrl::fromLocalFile("myqmlfile.qml"));
 view->show();

Since QDeclarativeView is a QWidget-based class, it can be used to display QML interfaces within QWidget-based GUI applications that do not use the Graphics View framework.

To receive errors related to loading and executing QML with QDeclarativeView, you can connect to the statusChanged() signal and monitor for QDeclarativeView::Error. The errors are available via QDeclarativeView::errors().

If you're using your own QGraphicsScene-based scene with QDeclarativeView, remember to enable scene's sticky focus mode and to set itemIndexMethod to QGraphicsScene::NoIndex.

Описание типов-членов

enum QDeclarativeView::ResizeMode

This enum specifies how to resize the view.

Константа	Значение	Описание
`QDeclarativeView::SizeViewToRootObject`	`0`	The view resizes with the root item in the QML.
`QDeclarativeView::SizeRootObjectToView`	`1`	The view will automatically resize the root item to the size of the view.

enum QDeclarativeView::Status

Specifies the loading status of the QDeclarativeView.

Константа	Значение	Описание
`QDeclarativeView::Null`	`0`	This QDeclarativeView has no source set.
`QDeclarativeView::Ready`	`1`	This QDeclarativeView has loaded and created the QML component.
`QDeclarativeView::Loading`	`2`	This QDeclarativeView is loading network data.
`QDeclarativeView::Error`	`3`	One or more errors has occurred. Call errors() to retrieve a list of errors.

Описание свойств

resizeMode : ResizeMode

This property holds whether the view should resize the canvas contents.

If this property is set to SizeViewToRootObject (the default), the view resizes with the root item in the QML.

If this property is set to SizeRootObjectToView, the view will automatically resize the root item.

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.

Функции доступа:

ResizeMode	resizeMode () const
void	setResizeMode ( ResizeMode )

source : QUrl

This property holds the URL of the source of the QML component.

Changing this property causes the QML component to be reloaded.

Ensure that the URL provided is full and correct, in particular, use QUrl::fromLocalFile() when loading a file from the local filesystem.

Функции доступа:

QUrl	source () const
void	setSource ( const QUrl & url )

See also Loading Resources in QML.

status : const Status

The component's current status.

Функции доступа:

Status status () const

Уведомляющий сигнал:

void	statusChanged ( QDeclarativeView::Status status )

Описание функций-членов

QDeclarativeView::QDeclarativeView ( QWidget * parent = 0 )

Constructs a QDeclarativeView with the given parent.

QDeclarativeView::QDeclarativeView ( const QUrl & source, QWidget * parent = 0 )

Constructs a QDeclarativeView with the given QML source and parent.

QDeclarativeView::~QDeclarativeView () `[virtual]`

Разрушает представление.

QDeclarativeEngine * QDeclarativeView::engine () const

Returns a pointer to the QDeclarativeEngine used for instantiating QML Components.

QList<QDeclarativeError> QDeclarativeView::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 QDeclarativeView::initialSize () const

Returns the initial size of the root object

QDeclarativeContext * QDeclarativeView::rootContext () const

This function returns the root of the context hierarchy. Each QML component is instantiated in a QDeclarativeContext. QDeclarativeContext's are essential for passing data to QML components. In QML, contexts are arranged hierarchically and this hierarchy is managed by the QDeclarativeEngine.

QGraphicsObject * QDeclarativeView::rootObject () const

Returns the view's root item.

void QDeclarativeView::sceneResized ( QSize size ) `[signal]`

This signal is emitted when the view is resized to size.

void QDeclarativeView::statusChanged ( QDeclarativeView::Status status ) `[signal]`

This signal is emitted when the component's current status changes.

Оглавление

QDeclarativeView Class Reference

Открытые типы

Свойства

Открытые функции

Сигналы

Дополнительные унаследованные члены

Подробное описание

Описание типов-членов

enum QDeclarativeView::ResizeMode

enum QDeclarativeView::Status

Описание свойств

resizeMode : ResizeMode

source : QUrl

status : const Status

Описание функций-членов

QDeclarativeView::QDeclarativeView ( QWidget * parent = 0 )

QDeclarativeView::QDeclarativeView ( const QUrl & source, QWidget * parent = 0 )

QDeclarativeView::~QDeclarativeView () [virtual]

QDeclarativeEngine * QDeclarativeView::engine () const

QList<QDeclarativeError> QDeclarativeView::errors () const

QSize QDeclarativeView::initialSize () const

QDeclarativeContext * QDeclarativeView::rootContext () const

QGraphicsObject * QDeclarativeView::rootObject () const

void QDeclarativeView::sceneResized ( QSize size ) [signal]

void QDeclarativeView::statusChanged ( QDeclarativeView::Status status ) [signal]

QDeclarativeView::~QDeclarativeView () `[virtual]`

void QDeclarativeView::sceneResized ( QSize size ) `[signal]`

void QDeclarativeView::statusChanged ( QDeclarativeView::Status status ) `[signal]`