QQuickAsyncImageProvider Class

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

This class was introduced in Qt 5.6.

Public Functions

virtual QQuickImageResponse *requestImageResponse(const QString &id, const QSize &requestedSize) = 0

Detailed Description

See the Image Response Provider Example for a complete implementation.

See also QQuickImageProvider.

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.

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

© 2024 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.