The QQuickAsyncImageProvider class provides an interface for for asynchronous control of QML image requests. More...
Header: | #include <QQuickAsyncImageProvider> |
qmake: | QT += quick |
Since: | Qt 5.6 |
Inherits: | QQuickImageProvider |
QQuickAsyncImageProvider() | |
virtual | ~QQuickAsyncImageProvider() override |
virtual QQuickImageResponse * | requestImageResponse(const QString &id, const QSize &requestedSize) = 0 |
The QQuickAsyncImageProvider class provides an interface for for asynchronous control of QML image requests.
See the Image Response Provider Example for a complete implementation.
See also QQuickImageProvider.
Default constructs an instance of QQuickAsyncImageProvider.
[override virtual]
QQuickAsyncImageProvider::~QQuickAsyncImageProvider()Destroys the instance of QQuickAsyncImageProvider. The destructor is virtual.
[pure virtual]
QQuickImageResponse
*QQuickAsyncImageProvider::requestImageResponse(const QString &id, const QSize
&requestedSize)Implement this method to return the job that will provide the texture with id.
The id is the requested image source, with the "image:" scheme and provider identifier removed. For example, if the image source was "image://myprovider/icons/home", the given id would be "icons/home".
The requestedSize corresponds to the Image::sourceSize requested by an Image item. If requestedSize is a valid size, the image returned should be of that size.
Note: this method may be called by multiple threads, so ensure the implementation of this method is reentrant.
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