The QQuickAsyncImageProvider class provides an interface for for asynchronous control of QML image requests. 更多...
| 頭： | #include <QQuickAsyncImageProvider> |
| qmake: | QT += quick |
| Since: | Qt 5.6 |
| 繼承： | QQuickImageProvider |
該類在 Qt 5.6 引入。
| virtual QQuickImageResponse * | requestImageResponse (const QString & id , const QSize & requestedSize ) = 0 |
見 Image Response Provider Example for a complete implementation.
另請參閱 QQuickImageProvider .
[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.
注意： this method may be called by multiple threads, so ensure the implementation of this method is reentrant.