Class: QgsImageFetcher

Handles asynchronous download of images.

Note

This is an abstract class, with methods which must be implemented by a subclass.

The following methods must be implemented: start()

List of all members, including inherited members

Class Hierarchy

Base classes

QObject

Constructor

__init__

Abstract Methods

start

Starts the image download

Signals

error	Emitted when an error occurs
finish	Emitted when the download completes
progress	Emitted to report progress

class qgis.core.QgsImageFetcher

Bases: QObject

__init__(parent: QObject | None = None)

Constructor

Parameters:

parent (Optional[QObject] = None)

signal error(msg: str)

Emitted when an error occurs

Parameters:

msg (str)

signal finish(legend: QImage)

Emitted when the download completes

Parameters:

legend (QImage) – The downloaded legend image

signal progress(received: int, total: int)

Emitted to report progress

Parameters:

• received (int)

• total (int)

abstract start(self)

Starts the image download

Note

Make sure to connect to “finish” and “error” before starting