Digikam::MetaEnginePreviews Class Reference

Public Member Functions
int	count () const
	Returns how many embedded previews are available. More...
QByteArray	data (int index=0)
int	dataSize (int index=0)
QString	fileExtension (int index=0)
int	height (int index=0)
QImage	image (int index=0)
bool	isEmpty ()
	Returns if there are any preview images available. More...
	MetaEnginePreviews (const QByteArray &imgData)
	MetaEnginePreviews (const QString &filePath)
QString	mimeType (int index=0)
QString	originalMimeType () const
	Returns the mimeType of the original image, detected from the file's content. More...
QSize	originalSize () const
	Returns the pixel size of the original image, as read from the file (not the metadata). More...
int	size () const
int	width (int index=0)
	~MetaEnginePreviews ()

Constructor & Destructor Documentation

MetaEnginePreviews() [1/2]

Digikam::MetaEnginePreviews::MetaEnginePreviews ( const QString &  filePath )

explicit

Open the given file and scan for embedded preview images

References AutoPtr, image(), Digikam::MetaEngine::Private::printExiv2ExceptionError(), and Digikam::s_metaEngineMutex.

MetaEnginePreviews() [2/2]

Digikam::MetaEnginePreviews::MetaEnginePreviews ( const QByteArray &  imgData )

explicit

Open the given image data and scan the image for embedded preview images.

References AutoPtr, image(), Digikam::MetaEngine::Private::printExiv2ExceptionError(), and Digikam::s_metaEngineMutex.

~MetaEnginePreviews()

Digikam::MetaEnginePreviews::~MetaEnginePreviews

(

)

Member Function Documentation

count()

int Digikam::MetaEnginePreviews::count

(

)

const

Returns how many embedded previews are available.

Referenced by data(), and size().

data()

QByteArray Digikam::MetaEnginePreviews::data

(

int

index = 0

)

Retrieve the image data for the specified embedded preview image

References count(), image(), Digikam::MetaEngine::Private::printExiv2ExceptionError(), Digikam::s_metaEngineMutex, and size().

Referenced by image().

dataSize()

int Digikam::MetaEnginePreviews::dataSize

(

int

index = 0

)

For each contained preview image, return the size of the image data in bytes, width and height of the preview, the mimeType and the file extension. Ensure that index < count(). Previews are sorted by width*height, largest first.

References size().

fileExtension()

QString Digikam::MetaEnginePreviews::fileExtension

(

int

index = 0

)

References size().

height()

int Digikam::MetaEnginePreviews::height

(

int

index = 0

)

References size().

image()

QImage Digikam::MetaEnginePreviews::image

(

int

index = 0

)

Loads the data of the specified preview and creates a QImage from this data. Returns a null QImage if the loading failed.

References data().

Referenced by data(), and MetaEnginePreviews().

isEmpty()

bool Digikam::MetaEnginePreviews::isEmpty

(

)

Returns if there are any preview images available.

mimeType()

QString Digikam::MetaEnginePreviews::mimeType

(

int

index = 0

)

References size().

originalMimeType()

QString Digikam::MetaEnginePreviews::originalMimeType

(

)

const

Returns the mimeType of the original image, detected from the file's content.

originalSize()

QSize Digikam::MetaEnginePreviews::originalSize

(

)

const

Returns the pixel size of the original image, as read from the file (not the metadata).

Referenced by Digikam::PreviewLoadingTask::execute().

size()

int Digikam::MetaEnginePreviews::size

(

)

const

References count().

Referenced by data(), dataSize(), fileExtension(), height(), mimeType(), and width().

width()

int Digikam::MetaEnginePreviews::width

(

int

index = 0

)

References size().

---

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

• core/libs/metadataengine/engine/metaengine_previews.h
• core/libs/metadataengine/engine/metaengine_previews.cpp