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This new class QgsImageCache is the equivalent of QgsSvgCache but for raster images. QgsImageCache stores pre-rendered resampled versions of raster image files, allowing efficient reuse without incurring the cost of resampling on every render. Additionally, it offers the other benefits QgsSvgCache has, such as thread safety, ability to transparently download remote images, and support for base64 encoded strings.
129 lines
3.7 KiB
Plaintext
129 lines
3.7 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsabstractcontentcache.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsAbstractContentCacheEntry
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{
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%Docstring
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Base class for entries in a QgsAbstractContentCache.
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Subclasses must take care to correctly implement the isEqual() method, applying their
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own logic for testing extra cache properties (e.g. image size for an image-based cache).
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.. versionadded:: 3.6
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%End
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%TypeHeaderCode
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#include "qgsabstractcontentcache.h"
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%End
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public:
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QgsAbstractContentCacheEntry( const QString &path );
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%Docstring
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Constructor for QgsAbstractContentCacheEntry for an entry relating to the specified ``path``.
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%End
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virtual ~QgsAbstractContentCacheEntry();
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QString path;
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QDateTime fileModified;
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QElapsedTimer fileModifiedLastCheckTimer;
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int mFileModifiedCheckTimeout;
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QgsAbstractContentCacheEntry *nextEntry;
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QgsAbstractContentCacheEntry *previousEntry;
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bool operator==( const QgsAbstractContentCacheEntry &other ) const;
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virtual int dataSize() const = 0;
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%Docstring
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Returns the memory usage in bytes for the entry.
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%End
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virtual void dump() const = 0;
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%Docstring
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Dumps debugging strings containing the item's properties. For testing purposes only.
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%End
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protected:
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virtual bool isEqual( const QgsAbstractContentCacheEntry *other ) const = 0;
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%Docstring
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Tests whether this entry matches another entry. Subclasses must take care to check
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that the type of ``other`` is of a matching class, and then test extra cache-specific
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properties, such as image size.
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%End
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private:
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QgsAbstractContentCacheEntry( const QgsAbstractContentCacheEntry &rh );
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};
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class QgsAbstractContentCacheBase: QObject
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{
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%Docstring
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A QObject derived base class for :py:class:`QgsAbstractContentCache`.
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Required because template based class (such as :py:class:`QgsAbstractContentCache`) cannot use the Q_OBJECT macro.
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.. versionadded:: 3.6
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%End
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%TypeHeaderCode
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#include "qgsabstractcontentcache.h"
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%End
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public:
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QgsAbstractContentCacheBase( QObject *parent );
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%Docstring
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Constructor for QgsAbstractContentCacheBase, with the specified ``parent`` object.
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%End
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signals:
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void remoteContentFetched( const QString &url );
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%Docstring
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Emitted when the cache has finished retrieving content from a remote ``url``.
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%End
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protected:
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virtual bool checkReply( QNetworkReply *reply, const QString &path ) const;
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%Docstring
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Runs additional checks on a network ``reply`` to ensure that the reply content is
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consistent with that required by the cache.
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%End
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protected slots:
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virtual void onRemoteContentFetched( const QString &url, bool success );
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%Docstring
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Triggered after remote content (i.e. HTTP linked content at the given ``url``) has been fetched.
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The ``success`` argument will be true if the content was successfully fetched, or false if
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it was not fetched successfully.
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%End
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};
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsabstractcontentcache.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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