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QQuickAsyncImageProvider Class

The QQuickAsyncImageProvider class provides an interface for asynchronous control of QML image requests.

This class was introduced in Qt 5.6.

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QQuickAsyncImageProvider Class

  • Header: QQuickAsyncImageProvider

  • Since: Qt 5.6

  • CMake:

    find_package(Qt6 REQUIRED COMPONENTS Quick)

    target_link_libraries(mytarget PRIVATE Qt6::Quick)

  • qmake: QT += quick

  • Inherits: QQuickImageProvider

  • Inherited By:

Detailed Description

See the Image Response Provider Example for a complete implementation.

See Also

Member Function Documentation

 

[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.

this method may be called by multiple threads, so ensure the implementation of this method is reentrant.

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