QgsAbstractContentCacheBase Class Reference

A QObject derived base class for QgsAbstractContentCache. More...

#include <qgsabstractcontentcache.h>

Inheritance diagram for QgsAbstractContentCacheBase:

Signals
void	remoteContentFetched (const QString &url)
	Emitted when the cache has finished retrieving content from a remote url.

Public Member Functions
	QgsAbstractContentCacheBase (QObject *parent)
	Constructor for QgsAbstractContentCacheBase, with the specified parent object.

Static Public Member Functions
static bool	isBase64Data (const QString &path)
	Returns true if path represents base64 encoded data.
static bool	parseBase64DataUrl (const QString &path, QString *mimeType=nullptr, QString *data=nullptr)
	Parses a path to determine if it represents a base 64 encoded HTML data URL, and if so, extracts the components of the URL.

Protected Slots
virtual void	onRemoteContentFetched (const QString &url, bool success)
	Triggered after remote content (i.e.

Protected Member Functions
virtual bool	checkReply (QNetworkReply *reply, const QString &path) const
	Runs additional checks on a network reply to ensure that the reply content is consistent with that required by the cache.

Detailed Description

A QObject derived base class for QgsAbstractContentCache.

Required because template based class (such as QgsAbstractContentCache) cannot use the Q_OBJECT macro.

Since

QGIS 3.6

Definition at line 132 of file qgsabstractcontentcache.h.

Constructor & Destructor Documentation

QgsAbstractContentCacheBase()

QgsAbstractContentCacheBase::QgsAbstractContentCacheBase

(

QObject *

parent

)

Constructor for QgsAbstractContentCacheBase, with the specified parent object.

Definition at line 35 of file qgsabstractcontentcache.cpp.

Member Function Documentation

checkReply()

virtual bool QgsAbstractContentCacheBase::checkReply ( QNetworkReply *  reply, const QString &  path  ) const

inlineprotectedvirtual

Runs additional checks on a network reply to ensure that the reply content is consistent with that required by the cache.

Reimplemented in QgsSvgCache.

Definition at line 179 of file qgsabstractcontentcache.h.

isBase64Data()

bool QgsAbstractContentCacheBase::isBase64Data ( const QString &  path )

static

Returns true if path represents base64 encoded data.

Since

QGIS 3.40

Definition at line 59 of file qgsabstractcontentcache.cpp.

onRemoteContentFetched

void QgsAbstractContentCacheBase::onRemoteContentFetched ( const QString &  url, bool  success  )

protectedvirtualslot

Triggered after remote content (i.e.

HTTP linked content at the given url) has been fetched.

The success argument will be true if the content was successfully fetched, or false if it was not fetched successfully.

Reimplemented in QgsAbstractContentCache< T >, QgsAbstractContentCache< QgsImageCacheEntry >, QgsAbstractContentCache< QgsSourceCacheEntry >, and QgsAbstractContentCache< QgsSvgCacheEntry >.

Definition at line 40 of file qgsabstractcontentcache.cpp.

parseBase64DataUrl()

bool QgsAbstractContentCacheBase::parseBase64DataUrl ( const QString &  path, QString *  mimeType = nullptr, QString *  data = nullptr  )

static

Parses a path to determine if it represents a base 64 encoded HTML data URL, and if so, extracts the components of the URL.

Data URLs are of the form data:[<mediatype>;]base64,<data>.

Parameters

path	path to test
mimeType	will be set to the extracted mime type if the path is a data URL
data	will be set to the extracted base64 data if the path is a data URL

Returns

true if path is a base 64 encoded data URL

Since

QGIS 3.40

Definition at line 45 of file qgsabstractcontentcache.cpp.

remoteContentFetched

void QgsAbstractContentCacheBase::remoteContentFetched ( const QString &  url )

signal

Emitted when the cache has finished retrieving content from a remote url.

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

• /build/qgis-3.40.0+99sid/src/core/qgsabstractcontentcache.h
• /build/qgis-3.40.0+99sid/src/core/qgsabstractcontentcache.cpp