QgsImageFetcher Class Reference

Handles asynchronous download of images. More...

#include <qgsrasterdataprovider.h>

Inheritance diagram for QgsImageFetcher:

Signals
void	error (const QString &msg)
	Emitted when an error occurs. More...
void	finish (const QImage &legend)
	Emitted when the download completes. More...
void	progress (qint64 received, qint64 total)
	Emitted to report progress. More...

Public Member Functions
	QgsImageFetcher (QObject *parent=nullptr)
	Constructor. More...
virtual void	start ()=0
	Starts the image download. More...

Detailed Description

Handles asynchronous download of images.

Since

QGIS 2.8

Definition at line 57 of file qgsrasterdataprovider.h.

Constructor & Destructor Documentation

QgsImageFetcher()

QgsImageFetcher::QgsImageFetcher ( QObject *  parent = nullptr )

inline

Constructor.

Definition at line 62 of file qgsrasterdataprovider.h.

Member Function Documentation

error

void QgsImageFetcher::error ( const QString &  msg )

signal

Emitted when an error occurs.

finish

void QgsImageFetcher::finish ( const QImage &  legend )

signal

Emitted when the download completes.

Parameters

legend

The downloaded legend image

progress

void QgsImageFetcher::progress ( qint64  received, qint64  total  )

signal

Emitted to report progress.

start()

virtual void QgsImageFetcher::start ( )

pure virtual

Starts the image download.

Note

Make sure to connect to "finish" and "error" before starting

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The documentation for this class was generated from the following file:

• /build/qgis-3.16.0+99unstable/src/core/raster/qgsrasterdataprovider.h