This class provides qgis with the ability to render raster datasets onto the mapcanvas. More...

#include <qgsrasterlayer.h>

Inheritance diagram for QgsRasterLayer:

Collaboration diagram for QgsRasterLayer:

Public Types
enum	ColorShadingAlgorithm { UndefinedShader, PseudoColorShader, FreakOutShader, ColorRampShader, UserDefinedShader }
	This enumerator describes the types of shading that can be used. More...
enum	LayerType { GrayOrUndefined, Palette, Multiband, ColorLayer }
	This enumerator describes the type of raster layer. More...
Public Types inherited from QgsMapLayer
enum	LayerType { VectorLayer, RasterLayer, PluginLayer }
	Layers enum defining the types of layers that can be added to a map. More...

Public Slots
void	showStatusMessage (const QString &theMessage)
void	updateProgress (int, int)
	Propagate progress updates from GDAL up to the parent app.
void	onProgress (int, double, QString)
	receive progress signal from provider
Public Slots inherited from QgsMapLayer
virtual void	invalidTransformInput ()
	Event handler for when a coordinate transform fails due to bad vertex error.
void	setMinimumScale (float theMinScale)
	Accessor and mutator for the minimum scale denominator member.
float	minimumScale ()
void	setMaximumScale (float theMaxScale)
	Accessor and mutator for the maximum scale denominator member.
float	maximumScale ()
void	toggleScaleBasedVisibility (bool theVisibilityFlag)
	Accessor and mutator for the scale based visilibility flag.
bool	hasScaleBasedVisibility ()
void	clearCacheImage ()
	Clear cached image added in 1.5.

Signals
void	progressUpdate (int theValue)
	Signal for notifying listeners of long running processes.
void	dataChanged ()
	This is emitted whenever data or metadata (e.g.
Signals inherited from QgsMapLayer
void	drawingProgress (int theProgress, int theTotalSteps)
	Emit a signal to notify of a progress event.
void	statusChanged (QString theStatus)
	Emit a signal with status (e.g.
void	layerNameChanged ()
	Emit a signal that the layer name has been changed.
void	layerCrsChanged ()
	Emit a signal that layer's CRS has been reset added in 1.4.
void	repaintRequested ()
	This signal should be connected with the slot QgsMapCanvas::refresh()
void	screenUpdateRequested ()
	The layer emits this signal when a screen update is requested.
void	recalculateExtents ()
	This is used to send a request that any mapcanvas using this layer update its extents.
void	dataChanged ()
	data of layer changed added in 1.5

Public Member Functions
	QgsRasterLayer ()
	Constructor.
	QgsRasterLayer (const QString &path, const QString &baseName=QString::null, bool loadDefaultStyleFlag=true)
	This is the constructor for the RasterLayer class.
	QgsRasterLayer (const QString &uri, const QString &baseName, const QString &providerKey, bool loadDefaultStyleFlag=true)
	[ data provider interface ] Constructor in provider mode
	~QgsRasterLayer ()
	The destructor.
void	setDataProvider (const QString &provider)
	[ data provider interface ] Set the data provider
LayerType	rasterType ()
	Accessor for raster layer type (which is a read only property)
void	setRenderer (QgsRasterRenderer *theRenderer)
	Accessor for drawing style.
QgsRasterRenderer *	renderer () const
QgsRasterResampleFilter *	resampleFilter () const
	Set raster resample filter.
QgsBrightnessContrastFilter *	brightnessFilter () const
QgsHueSaturationFilter *	hueSaturationFilter () const
QgsRasterPipe *	pipe ()
	Get raster pipe.
int	width () const
	Accessor that returns the width of the (unclipped) raster.
int	height () const
	Accessor that returns the height of the (unclipped) raster.
int	bandCount () const
	Get the number of bands in this layer.
const QString	bandName (int theBandNoInt)
	Get the name of a band given its number.
QgsRasterDataProvider *	dataProvider ()
	Returns the data provider.
const QgsRasterDataProvider *	dataProvider () const
	Returns the data provider in a const-correct manner.
virtual void	reload ()
	Synchronises with changes in the datasource.
bool	draw (QgsRenderContext &rendererContext)
	This is called when the view on the raster layer needs to be redrawn.
void	draw (QPainter theQPainter, QgsRasterViewPort myRasterViewPort, const QgsMapToPixel *theQgsMapToPixel=0)
	This is an overloaded version of the draw() function that is called by both draw() and thumbnailAsPixmap.
QString	lastError ()
	[ data provider interface ] If an operation returns 0 (e.g.
QString	lastErrorTitle ()
	[ data provider interface ] If an operation returns 0 (e.g.
QList< QPair< QString, QColor > >	legendSymbologyItems () const
	Returns a list with classification items (Text and color)
QString	metadata ()
	Obtain GDAL Metadata for this layer.
QPixmap	paletteAsPixmap (int theBandNumber=1)
	Get an 100x100 pixmap of the color palette.
QString	providerType () const
	[ data provider interface ] Which provider is being used for this Raster Layer?
double	rasterUnitsPerPixelX ()
	Returns the number of raster units per each raster pixel.
double	rasterUnitsPerPixelY ()
void	setContrastEnhancement (QgsContrastEnhancement::ContrastEnhancementAlgorithm theAlgorithm, QgsRaster::ContrastEnhancementLimits theLimits=QgsRaster::ContrastEnhancementMinMax, QgsRectangle theExtent=QgsRectangle(), int theSampleSize=SAMPLE_SIZE, bool theGenerateLookupTableFlag=true)
	Set contrast enhancement algorithm.
void	setDefaultContrastEnhancement ()
	Set default contrast enhancement.
void	setDrawingStyle (const QString &theDrawingStyleQString)
	Overloaded version of the above function for convenience when restoring from xml.
void	showProgress (int theValue)
	[ data provider interface ] A wrapper function to emit a progress update signal
virtual QStringList	subLayers () const
	Returns the sublayers of this layer - Useful for providers that manage their own layers, such as WMS.
QPixmap	previewAsPixmap (QSize size, QColor bgColor=Qt::white)
	Draws a preview of the rasterlayer into a pixmap.
void	triggerRepaint ()
	Emit a signal asking for a repaint.
virtual void	setLayerOrder (const QStringList &layers)
	Reorders the previously selected sublayers of this layer from bottom to top.
virtual void	setSubLayerVisibility (QString name, bool vis)
	Set the visibility of the given sublayer name.
virtual QDateTime	timestamp () const
	Time stamp of data source in the moment when data/metadata were loaded by provider.
Public Member Functions inherited from QgsMapLayer
	QgsMapLayer (QgsMapLayer::LayerType type=VectorLayer, QString lyrname=QString::null, QString source=QString::null)
	Constructor.
virtual	~QgsMapLayer ()
	Destructor.
QgsMapLayer::LayerType	type () const
	Get the type of the layer.
QString	id () const
	Get this layer's unique ID, this ID is used to access this layer from map layer registry.
void	setLayerName (const QString &name)
	Set the display name of the layer.
const QString &	name () const
	Get the display name of the layer.
const QString &	originalName () const
	Get the original name of the layer.
void	setTitle (const QString &title)
const QString &	title () const
void	setAbstract (const QString &abstract)
const QString &	abstract () const
void	setKeywordList (const QString &keywords)
const QString &	keywordList () const
void	setDataUrl (const QString &dataUrl)
const QString &	dataUrl () const
void	setDataUrlFormat (const QString &dataUrlFormat)
const QString &	dataUrlFormat () const
void	setAttribution (const QString &attrib)
const QString &	attribution () const
void	setAttributionUrl (const QString &attribUrl)
const QString &	attributionUrl () const
void	setMetadataUrl (const QString &metaUrl)
const QString &	metadataUrl () const
void	setMetadataUrlType (const QString &metaUrlType)
const QString &	metadataUrlType () const
void	setMetadataUrlFormat (const QString &metaUrlFormat)
const QString &	metadataUrlFormat () const
void	setBlendMode (const QPainter::CompositionMode blendMode)
	Write blend mode for layer.
QPainter::CompositionMode	blendMode () const
	Read blend mode for layer.
virtual void	drawLabels (QgsRenderContext &rendererContext)
	Draw labels.
virtual QgsRectangle	extent ()
	Return the extent of the layer.
bool	isValid ()
QString	publicSource () const
const QString &	source () const
	Returns the source for the layer.
virtual bool	isEditable () const
	True if the layer can be edited.
bool	readLayerXML (const QDomElement &layerElement)
	sets state from Dom document
bool	writeLayerXML (QDomElement &layerElement, QDomDocument &document)
	stores state in Dom node
void	setCustomProperty (const QString &key, const QVariant &value)
	Set a custom property for layer.
QVariant	customProperty (const QString &value, const QVariant &defaultValue=QVariant()) const
	Read a custom property from layer.
void	removeCustomProperty (const QString &key)
	Remove a custom property from layer.
virtual QgsError	error () const
	Get current status error.
const QgsCoordinateReferenceSystem &	crs () const
	Returns layer's spatial reference system.
void	setCrs (const QgsCoordinateReferenceSystem &srs, bool emitSignal=true)
	Sets layer's spatial reference system.
virtual QString	styleURI ()
	Retrieve the style URI for this layer (either as a .qml file on disk or as a record in the users style table in their personal qgis.db)
virtual QString	loadDefaultStyle (bool &theResultFlag)
	Retrieve the default style for this layer if one exists (either as a .qml file on disk or as a record in the users style table in their personal qgis.db)
virtual QString	loadNamedStyle (const QString theURI, bool &theResultFlag)
	Retrieve a named style for this layer if one exists (either as a .qml file on disk or as a record in the users style table in their personal qgis.db)
virtual bool	loadNamedStyleFromDb (const QString db, const QString theURI, QString &qml)
virtual void	exportNamedStyle (QDomDocument &doc, QString &errorMsg)
	Export the properties of this layer as named style in a QDomDocument.
virtual void	exportSldStyle (QDomDocument &doc, QString &errorMsg)
	Export the properties of this layer as SLD style in a QDomDocument.
virtual QString	saveDefaultStyle (bool &theResultFlag)
	Save the properties of this layer as the default style (either as a .qml file on disk or as a record in the users style table in their personal qgis.db)
virtual QString	saveNamedStyle (const QString theURI, bool &theResultFlag)
	Save the properties of this layer as a named style (either as a .qml file on disk or as a record in the users style table in their personal qgis.db)
virtual QString	saveSldStyle (const QString theURI, bool &theResultFlag)
virtual QString	loadSldStyle (const QString theURI, bool &theResultFlag)
virtual bool	readSld (const QDomNode &node, QString &errorMessage)
QUndoStack *	undoStack ()
	Return pointer to layer's undo stack.
QImage *	cacheImage ()
	Get the QImage used for caching render operations.
void	setCacheImage (QImage *thepImage)
	Set the QImage used for caching render operations.
virtual void	onCacheImageDelete ()
	Is called when the cache image is being deleted.

Static Public Member Functions
static bool	isValidRasterFileName (const QString &theFileNameQString, QString &retError)
	This helper checks to see whether the file name appears to be a valid raster file name.
static bool	isValidRasterFileName (const QString &theFileNameQString)
static QDateTime	lastModified (const QString &name)
	Return time stamp for given file name.
Static Public Member Functions inherited from QgsMapLayer
static QString	capitaliseLayerName (const QString &name)
	A convenience function to (un)capitalise the layer name.

Static Public Attributes
static const double	CUMULATIVE_CUT_LOWER = 0.02
	Default cumulative cut lower limit.
static const double	CUMULATIVE_CUT_UPPER = 0.98
	Default cumulative cut upper limit.
static const double	SAMPLE_SIZE = 250000
	Default sample size (number of pixels) for estimated statistics/histogram calculation.

Protected Member Functions
bool	readSymbology (const QDomNode &node, QString &errorMessage)
	Read the symbology for the current layer from the Dom node supplied.
bool	readXml (const QDomNode &layer_node)
	Reads layer specific state from project file Dom node.
bool	writeSymbology (QDomNode &, QDomDocument &doc, QString &errorMessage) const
	Write the symbology for the layer into the docment provided.
bool	writeXml (QDomNode &layer_node, QDomDocument &doc)
	Write layer specific state to project file Dom node.
Protected Member Functions inherited from QgsMapLayer
virtual void	setExtent (const QgsRectangle &rect)
	Set the extent.
void	setValid (bool valid)
	set whether layer is valid or not - should be used in constructor.
void	readCustomProperties (const QDomNode &layerNode, const QString &keyStartsWith="")
	Read custom properties from project file.
void	writeCustomProperties (QDomNode &layerNode, QDomDocument &doc) const
	Write custom properties to project file.
void	connectNotify (const char *signal)
	debugging member - invoked when a connect() is made to this object
void	appendError (const QgsErrorMessage &theMessage)
	Add error message.
void	setError (const QgsError &theError)
	Set error message.

Private Member Functions
void	init ()
	Initialize default values.
void	closeDataProvider ()
	Close data provider and clear related members.
bool	update ()
	Update the layer if it is outdated.
void	setRendererForDrawingStyle (const QgsRaster::DrawingStyle &theDrawingStyle)
	Sets corresponding renderer for style.

Private Attributes
const QString	QSTRING_NOT_SET
	Constant defining flag for XML and a constant that signals property not used.
const QString	TRSTRING_NOT_SET
QgsRasterDataProvider *	mDataProvider
	Pointer to data provider.
QString	mError
	[ data provider interface ]The error message associated with the last error
QString	mErrorCaption
	[ data provider interface ] The error caption associated with the last error
QDateTime	mLastModified
	[ data provider interface ] Timestamp, the last modified time of the data source when the layer was created
QgsRasterViewPort	mLastViewPort
QString	mProviderKey
	[ data provider interface ] Data provider key
LayerType	mRasterType
QgsRasterPipe	mPipe

Additional Inherited Members
Protected Attributes inherited from QgsMapLayer
unsigned int	mTransparencyLevel
	Transparency level for this layer should be 0-255 (255 being opaque)
QgsRectangle	mExtent
	Extent of the layer.
bool	mValid
	Indicates if the layer is valid and can be drawn.
QString	mDataSource
	data source description string, varies by layer type
QString	mLayerName
	Name of the layer - used for display.
QString	mLayerOrigName
	Original name of the layer.
QString	mTitle
QString	mAbstract
	Description of the layer.
QString	mKeywordList
QString	mDataUrl
	DataUrl of the layer.
QString	mDataUrlFormat
QString	mAttribution
	Attribution of the layer.
QString	mAttributionUrl
QString	mMetadataUrl
	MetadataUrl of the layer.
QString	mMetadataUrlType
QString	mMetadataUrlFormat
QgsError	mError
	Error.

Detailed Description

This class provides qgis with the ability to render raster datasets onto the mapcanvas.

The qgsrasterlayer class makes use of gdal for data io, and thus supports any gdal supported format. The constructor attempts to infer what type of file (LayerType) is being opened - not in terms of the file format (tif, ascii grid etc.) but rather in terms of whether the image is a GRAYSCALE, PaletteD or Multiband,

Within the three allowable raster layer types, there are 8 permutations of how a layer can actually be rendered. These are defined in the DrawingStyle enum and consist of:

SingleBandGray -> a GRAYSCALE layer drawn as a range of gray colors (0-255) SingleBandPseudoColor -> a GRAYSCALE layer drawn using a pseudocolor algorithm PalettedSingleBandGray -> a PaletteD layer drawn in gray scale (using only one of the color components) PalettedSingleBandPseudoColor -> a PaletteD layer having only one of its color components rendered as psuedo color PalettedMultiBandColor -> a PaletteD image where the bands contains 24bit color info and 8 bits is pulled out per color MultiBandSingleBandGray -> a layer containing 2 or more bands, but using only one band to produce a grayscale image MultiBandSingleBandPseudoColor -> a layer containing 2 or more bands, but using only one band to produce a pseudocolor image MultiBandColor -> a layer containing 2 or more bands, mapped to the three RGBcolors. In the case of a multiband with only two bands, one band will have to be mapped to more than one color

Each of the above mentioned drawing styles is implemented in its own draw* function. Some of the drawing styles listed above require statistics about the layer such as the min / max / mean / stddev etc. statistics for a band can be gathered using the bandStatistics function. Note that statistics gathering is a slow process and every effort should be made to call this function as few times as possible. For this reason, qgsraster has a vector class member to store stats for each band. The constructor initialises this vector on startup, but only populates the band name and number fields.

Note that where bands are of gdal 'undefined' type, their values may exceed the renderable range of 0-255. Because of this a linear scaling histogram enhanceContrast is applied to undefined layers to normalise the data into the 0-255 range.

A qgsrasterlayer band can be referred to either by name or by number (base=1). It should be noted that band names as stored in datafiles may not be unique, and so the rasterlayer class appends the band number in brackets behind each band name.

Sample usage of the QgsRasterLayer class:

QString myFileNameQString = "/path/to/file";
QFileInfo myFileInfo(myFileNameQString);
QString myBaseNameQString = myFileInfo.baseName();
QgsRasterLayer *myRasterLayer = new QgsRasterLayer(myFileNameQString, myBaseNameQString);

In order to automate redrawing of a raster layer, you should like it to a map canvas like this :

QObject::connect( myRasterLayer, SIGNAL(repaintRequested()), mapCanvas, SLOT(refresh()) );

A raster layer can also export its legend as a pixmap:

QPixmap myQPixmap = myRasterLayer->legendPixmap();

Once a layer has been created you can find out what type of layer it is (GrayOrUndefined, Palette or Multiband):

if (rasterLayer->rasterType()==QgsRasterLayer::Multiband)
{
  //do something
}
else if (rasterLayer->rasterType()==QgsRasterLayer::Palette)
{
  //do something
}
else // QgsRasterLayer::GrayOrUndefined
{
  //do something.
}

You can combine layer type detection with the setDrawingStyle method to override the default drawing style assigned when a layer is loaded:

if (rasterLayer->rasterType()==QgsRasterLayer::Multiband)
{
   myRasterLayer->setDrawingStyle(QgsRasterLayer::MultiBandSingleBandPseudoColor);
}
else if (rasterLayer->rasterType()==QgsRasterLayer::Palette)
{
  myRasterLayer->setDrawingStyle(QgsRasterLayer::PalettedSingleBandPseudoColor);
}
else // QgsRasterLayer::GrayOrUndefined
{
  myRasterLayer->setDrawingStyle(QgsRasterLayer::SingleBandPseudoColor);
}

Raster layers can also have an arbitrary level of transparency defined, and have their color palettes inverted using the setTransparency and setInvertHistogram methods.

Pseudocolor images can have their output adjusted to a given number of standard deviations using the setStandardDeviations method.

The final area of functionality you may be interested in is band mapping. Band mapping allows you to choose arbitrary band -> color mappings and is applicable only to Palette and Multiband rasters, There are four mappings that can be made: red, green, blue and gray. Mappings are non-exclusive. That is a given band can be assigned to no, some or all color mappings. The constructor sets sensible defaults for band mappings but these can be overridden at run time using the setRedBandName, setGreenBandName, setBlueBandName and setGrayBandName methods.

Definition at line 167 of file qgsrasterlayer.h.

Member Enumeration Documentation

enum QgsRasterLayer::ColorShadingAlgorithm

This enumerator describes the types of shading that can be used.

Enumerator:

UndefinedShader
PseudoColorShader
FreakOutShader
ColorRampShader
UserDefinedShader

Definition at line 213 of file qgsrasterlayer.h.

enum QgsRasterLayer::LayerType

This enumerator describes the type of raster layer.

Enumerator:

GrayOrUndefined
Palette
Multiband
ColorLayer

Definition at line 223 of file qgsrasterlayer.h.

Constructor & Destructor Documentation

QgsRasterLayer::QgsRasterLayer ( )

Constructor.

Provider is not set.

Definition at line 79 of file qgsrasterlayer.cpp.

References init(), and QgsMapLayer::mValid.

QgsRasterLayer::QgsRasterLayer	(	const QString &	path,
		const QString &	baseName = `QString::null`,
		bool	loadDefaultStyleFlag = `true`
	)

This is the constructor for the RasterLayer class.

The main tasks carried out by the constructor are:

-Load the rasters default style (.qml) file if it exists

-Populate the RasterStatsVector with initial values for each band.

-Calculate the layer extents

-Determine whether the layer is gray, paletted or multiband.

-Assign sensible defaults for the red, green, blue and gray bands.

Definition at line 89 of file qgsrasterlayer.cpp.

References init(), QgsMapLayer::loadDefaultStyle(), QgsMapLayer::mValid, QgsDebugMsg, setDataProvider(), and setDefaultContrastEnhancement().

QgsRasterLayer::QgsRasterLayer	(	const QString &	uri,
		const QString &	baseName,
		const QString &	providerKey,
		bool	loadDefaultStyleFlag = `true`
	)

[ data provider interface ] Constructor in provider mode

Todo:: Rename into a general constructor when the old raster interface is retired parameter dummy is just there to distinguish this function signature from the old non-provider one.

Definition at line 121 of file qgsrasterlayer.cpp.

References init(), QgsMapLayer::loadDefaultStyle(), QgsMapLayer::mValid, QgsDebugMsg, setDataProvider(), setDefaultContrastEnhancement(), QgsMapLayer::statusChanged(), and tr.

QgsRasterLayer::~QgsRasterLayer ( )

The destructor.

Definition at line 153 of file qgsrasterlayer.cpp.

References QgsMapLayer::mValid.

Member Function Documentation

int QgsRasterLayer::bandCount ( ) const

Get the number of bands in this layer.

Definition at line 214 of file qgsrasterlayer.cpp.

References QgsRasterInterface::bandCount(), and mDataProvider.

Referenced by QgsRasterHistogramWidget::computeHistogram(), QgsRasterHistogramWidget::histoAction(), metadata(), QgsRasterHistogramWidget::QgsRasterHistogramWidget(), readXml(), and QgsRasterHistogramWidget::refreshHistogram().

const QString QgsRasterLayer::bandName ( int theBandNoInt )

Get the name of a band given its number.

Definition at line 220 of file qgsrasterlayer.cpp.

References dataProvider(), and QgsRasterInterface::generateBandName().

Referenced by metadata(), and QgsRasterHistogramWidget::QgsRasterHistogramWidget().

QgsBrightnessContrastFilter* QgsRasterLayer::brightnessFilter ( ) const

inline

Definition at line 261 of file qgsrasterlayer.h.

Referenced by readSymbology(), and setDataProvider().

void QgsRasterLayer::closeDataProvider ( )

private

Close data provider and clear related members.

Definition at line 981 of file qgsrasterlayer.cpp.

References mDataProvider, mPipe, QgsMapLayer::mValid, and QgsRasterPipe::remove().

Referenced by readXml(), and update().

void QgsRasterLayer::dataChanged ( )

signal

This is emitted whenever data or metadata (e.g.

color table, extent) has changed

Note: added in 1.7

Referenced by update().

QgsRasterDataProvider * QgsRasterLayer::dataProvider ( )

Returns the data provider.

Returns: 0 if not using the data provider model (i.e. directly using GDAL)

Definition at line 233 of file qgsrasterlayer.cpp.

References mDataProvider.

Referenced by QgsRasterLayerSaveAsDialog::addNoDataRow(), bandName(), QgsRasterHistogramWidget::computeHistogram(), QgsComposerMap::containsWMSLayer(), QgsProjectFileTransform::convertRasterProperties(), QgsRasterRendererWidget::displayBandName(), QgsRasterHistogramWidget::histoAction(), QgsMapToolIdentify::identifyRasterLayer(), metadata(), QgsSingleBandPseudoColorRendererWidget::on_mLoadFromBandButton_clicked(), QgsRasterMinMaxWidget::on_mLoadPushButton_clicked(), QgsMultiBandColorRendererWidget::QgsMultiBandColorRendererWidget(), QgsPalettedRendererWidget::QgsPalettedRendererWidget(), QgsSingleBandGrayRendererWidget::QgsSingleBandGrayRendererWidget(), QgsSingleBandPseudoColorRendererWidget::QgsSingleBandPseudoColorRendererWidget(), readSymbology(), QgsRasterHistogramWidget::refreshHistogram(), QgsSingleBandGrayRendererWidget::renderer(), QgsPalettedRendererWidget::renderer(), QgsMultiBandColorRendererWidget::renderer(), QgsSingleBandPseudoColorRendererWidget::renderer(), setDefaultContrastEnhancement(), QgsPalettedRendererWidget::setFromRenderer(), and QgsRasterFormatSaveOptionsWidget::validateOptions().

const QgsRasterDataProvider * QgsRasterLayer::dataProvider ( ) const

Returns the data provider in a const-correct manner.

Note: available in python bindings as constDataProvider()

Returns: 0 if not using the data provider model (i.e. directly using GDAL)

Definition at line 241 of file qgsrasterlayer.cpp.

References mDataProvider.

bool QgsRasterLayer::draw ( QgsRenderContext & rendererContext )

virtual

This is called when the view on the raster layer needs to be redrawn.

Reimplemented from QgsMapLayer.

Definition at line 254 of file qgsrasterlayer.cpp.

References QgsRenderContext::coordinateTransform(), QgsMapLayer::crs(), QgsCoordinateTransform::destCRS(), QgsRenderContext::extent(), QgsMapLayer::extent(), height(), QgsRectangle::intersect(), QgsRectangle::isEmpty(), QgsMessageLog::logMessage(), QgsRenderContext::mapToPixel(), QgsMapToPixel::mapUnitsPerPixel(), mDataProvider, mLastViewPort, QgsMapLayer::mTransparencyLevel, QgsRenderContext::painter(), QgsDebugMsg, QgsDebugMsgLevel, QgsRenderContext::rasterScaleFactor(), QgsRenderContext::scaleFactor(), QgsRectangle::set(), QgsRasterDataProvider::setDpi(), QgsRectangle::setMinimal(), QgsPoint::setX(), QgsMapToPixel::toMapCoordinatesF(), QgsRectangle::toString(), tr, QgsMapToPixel::transform(), QgsCoordinateTransform::transformBoundingBox(), update(), QgsException::what(), width(), QgsRectangle::xMaximum(), QgsRectangle::xMinimum(), QgsRectangle::yMaximum(), and QgsRectangle::yMinimum().

Referenced by previewAsPixmap().

void QgsRasterLayer::draw	(	QPainter *	theQPainter,
		QgsRasterViewPort *	myRasterViewPort,
		const QgsMapToPixel *	theQgsMapToPixel = `0`
	)

This is an overloaded version of the draw() function that is called by both draw() and thumbnailAsPixmap.

Definition at line 410 of file qgsrasterlayer.cpp.

References QgsRasterPipe::last(), QgsRasterViewPort::mDestCRS, mPipe, QgsRasterViewPort::mSrcCRS, QgsRasterPipe::projector(), QgsDebugMsg, and QgsRasterProjector::setCRS().

int QgsRasterLayer::height ( ) const

Accessor that returns the height of the (unclipped) raster.

Definition at line 1628 of file qgsrasterlayer.cpp.

References mDataProvider, and QgsRasterInterface::ySize().

Referenced by draw().

QgsHueSaturationFilter* QgsRasterLayer::hueSaturationFilter ( ) const

inline

Definition at line 262 of file qgsrasterlayer.h.

Referenced by readSymbology(), and setDataProvider().

void QgsRasterLayer::init ( )

private

Initialize default values.

Definition at line 764 of file qgsrasterlayer.cpp.

References GrayOrUndefined, QgsRasterViewPort::mHeight, mLastViewPort, mRasterType, QgsRasterViewPort::mWidth, setRendererForDrawingStyle(), and QgsRaster::UndefinedDrawingStyle.

Referenced by QgsRasterLayer(), readXml(), and update().

bool QgsRasterLayer::isValidRasterFileName	(	const QString &	theFileNameQString,
		QString &	retError
	)

static

This helper checks to see whether the file name appears to be a valid raster file name.

If the file name looks like it could be valid, but some sort of error occurs in processing the file, the error is returned in retError.

Definition at line 168 of file qgsrasterlayer.cpp.

References cast_to_fptr, QgsProviderRegistry::function(), QgsProviderRegistry::instance(), and QgsDebugMsg.

Referenced by isValidRasterFileName().

bool QgsRasterLayer::isValidRasterFileName ( const QString & theFileNameQString )

static

Definition at line 181 of file qgsrasterlayer.cpp.

References isValidRasterFileName().

QString QgsRasterLayer::lastError ( )

virtual

[ data provider interface ] If an operation returns 0 (e.g.

draw()), this function returns the text of the error associated with the failure

Reimplemented from QgsMapLayer.

Definition at line 441 of file qgsrasterlayer.cpp.

References mError.

QString QgsRasterLayer::lastErrorTitle ( )

virtual

[ data provider interface ] If an operation returns 0 (e.g.

draw()), this function returns the text of the error associated with the failure

Reimplemented from QgsMapLayer.

Definition at line 446 of file qgsrasterlayer.cpp.

References mErrorCaption.

QDateTime QgsRasterLayer::lastModified ( const QString & name )

static

Return time stamp for given file name.

Definition at line 187 of file qgsrasterlayer.cpp.

References QgsDebugMsg.

Referenced by setDataProvider().

QList< QPair< QString, QColor > > QgsRasterLayer::legendSymbologyItems ( ) const

Returns a list with classification items (Text and color)

Note: this method was added in version 1.8

Definition at line 451 of file qgsrasterlayer.cpp.

References QgsRasterRenderer::legendSymbologyItems(), mPipe, QgsRasterPipe::renderer(), and renderer().

Referenced by QgsLegendModel::addRasterLayerItems(), and QgsLegendModel::updateRasterSymbolItemText().

QString QgsRasterLayer::metadata ( )

virtual

Obtain GDAL Metadata for this layer.

Reimplemented from QgsMapLayer.

Definition at line 462 of file qgsrasterlayer.cpp.

void QgsRasterLayer::onProgress	(	int	theType,
		double	theProgress,
		QString	theMessage
	)

slot

receive progress signal from provider

Definition at line 1287 of file qgsrasterlayer.cpp.

References progressUpdate(), and QgsDebugMsg.

Referenced by setDataProvider().

QPixmap QgsRasterLayer::paletteAsPixmap ( int theBandNumber = 1 )

Get an 100x100 pixmap of the color palette.

If the layer has no palette a white pixmap will be returned

Parameters

theBandNumber the number of the band to use for generating a pixmap of the associated palette

Returns: a 100x100 pixel QPixmap of the bands palette

Definition at line 678 of file qgsrasterlayer.cpp.

References QgsRasterDataProvider::colorInterpretation(), QgsRasterDataProvider::colorTable(), QgsColorRampShader::DISCRETE, mDataProvider, QgsRaster::PaletteIndex, QgsDebugMsg, QgsColorRampShader::setColorRampItemList(), QgsColorRampShader::setColorRampType(), and QgsColorRampShader::shade().

QgsRasterPipe* QgsRasterLayer::pipe ( )

inline

Get raster pipe.

Definition at line 265 of file qgsrasterlayer.h.

QPixmap QgsRasterLayer::previewAsPixmap	(	QSize	size,
		QColor	bgColor = `Qt::white`
	)

Draws a preview of the rasterlayer into a pixmap.

Definition at line 1229 of file qgsrasterlayer.cpp.

References draw(), QgsRasterDataProvider::extent(), QgsRectangle::height(), QgsRasterViewPort::mBottomRightPoint, mDataProvider, QgsRasterViewPort::mDestCRS, QgsRasterViewPort::mDrawnExtent, QgsRasterViewPort::mHeight, QgsRasterViewPort::mSrcCRS, QgsRasterViewPort::mTopLeftPoint, QgsRasterViewPort::mWidth, and QgsRectangle::width().

void QgsRasterLayer::progressUpdate ( int theValue )

signal

Signal for notifying listeners of long running processes.

Referenced by onProgress(), and showProgress().

QString QgsRasterLayer::providerType ( ) const

[ data provider interface ] Which provider is being used for this Raster Layer?

Note: added in 2.0

Definition at line 732 of file qgsrasterlayer.cpp.

References mProviderKey.

LayerType QgsRasterLayer::rasterType ( )

inline

Accessor for raster layer type (which is a read only property)

Definition at line 246 of file qgsrasterlayer.h.

double QgsRasterLayer::rasterUnitsPerPixelX ( )

Returns the number of raster units per each raster pixel.

In a world file, this is normally the first row (without the sign)

Returns: the horizontal units per pixel as reported in the GDAL geotramsform[1]

Definition at line 740 of file qgsrasterlayer.cpp.

References QgsRasterInterface::capabilities(), QgsRasterDataProvider::extent(), mDataProvider, QgsRasterInterface::Size, QgsRectangle::width(), and QgsRasterInterface::xSize().

double QgsRasterLayer::rasterUnitsPerPixelY ( )

Definition at line 755 of file qgsrasterlayer.cpp.

References QgsRasterInterface::capabilities(), QgsRasterDataProvider::extent(), QgsRectangle::height(), mDataProvider, QgsRasterInterface::Size, QgsRasterInterface::xSize(), and QgsRasterInterface::ySize().

bool QgsRasterLayer::readSymbology	(	const QDomNode &	node,
		QString &	errorMessage
	)

protectedvirtual

Read the symbology for the current layer from the Dom node supplied.

Implements QgsMapLayer.

Definition at line 1305 of file qgsrasterlayer.cpp.

References brightnessFilter(), QgsProjectFileTransform::convertRasterProperties(), dataProvider(), QgsMapRenderer::getCompositionMode(), hueSaturationFilter(), QgsRasterRendererRegistry::instance(), mPipe, QgsDebugMsg, QgsBrightnessContrastFilter::readXML(), QgsRasterResampleFilter::readXML(), QgsHueSaturationFilter::readXML(), renderer(), QgsRasterRendererRegistryEntry::rendererCreateFunction, resampleFilter(), QgsRasterPipe::set(), and QgsMapLayer::setBlendMode().

Referenced by readXml().

bool QgsRasterLayer::readXml ( const QDomNode & layer_node )

protectedvirtual

Reads layer specific state from project file Dom node.

Raster layer project file XML of form:

Note: Called by QgsMapLayer::readXML().

Note: Make sure to read the file first so stats etc are initialised properly!

Reimplemented from QgsMapLayer.

Definition at line 1398 of file qgsrasterlayer.cpp.

References bandCount(), closeDataProvider(), QgsMapLayer::crs(), QgsDataSourceURI::encodedUri(), init(), mDataProvider, QgsMapLayer::mDataSource, mProviderKey, QgsMapLayer::mValid, QgsDebugMsg, readSymbology(), renderer(), setDataProvider(), QgsDataSourceURI::setEncodedUri(), QgsDataSourceURI::setParam(), setRendererForDrawingStyle(), QgsRasterDataProvider::setUserNoDataValue(), QgsRasterDataProvider::setUseSrcNoDataValue(), QgsRaster::SingleBandColorDataStyle, and QgsMapLayer::type().

void QgsRasterLayer::reload ( )

virtual

Synchronises with changes in the datasource.

Note: added in version 1.6

Reimplemented from QgsMapLayer.

Definition at line 246 of file qgsrasterlayer.cpp.

References mDataProvider, and QgsDataProvider::reloadData().

QgsRasterRenderer* QgsRasterLayer::renderer ( ) const

inline

Definition at line 256 of file qgsrasterlayer.h.

Referenced by legendSymbologyItems(), QgsRasterLayerSaveAsDialog::on_mLoadTransparentNoDataToolButton_clicked(), QgsMultiBandColorRendererWidget::QgsMultiBandColorRendererWidget(), QgsPalettedRendererWidget::QgsPalettedRendererWidget(), QgsSingleBandGrayRendererWidget::QgsSingleBandGrayRendererWidget(), QgsSingleBandPseudoColorRendererWidget::QgsSingleBandPseudoColorRendererWidget(), readSymbology(), readXml(), setDataProvider(), and setDefaultContrastEnhancement().

QgsRasterResampleFilter* QgsRasterLayer::resampleFilter ( ) const

inline

Set raster resample filter.

Takes ownership of the resample filter object

Definition at line 259 of file qgsrasterlayer.h.

Referenced by readSymbology(), and setDataProvider().

void QgsRasterLayer::setContrastEnhancement	(	QgsContrastEnhancement::ContrastEnhancementAlgorithm	theAlgorithm,
		QgsRaster::ContrastEnhancementLimits	theLimits = `QgsRaster::ContrastEnhancementMinMax`,
		QgsRectangle	theExtent = `QgsRectangle()`,
		int	theSampleSize = `SAMPLE_SIZE`,
		bool	theGenerateLookupTableFlag = `true`
	)

Set contrast enhancement algorithm.

Parameters

theAlgorithm	Contrast enhancement algorithm
theLimits	Limits
theExtent	Extent used to calculate limits, if empty, use full layer extent
theSampleSize	Size of data sample to calculate limits, if 0, use full resolution
theGenerateLookupTableFlag	Generate llokup table.

Definition at line 988 of file qgsrasterlayer.cpp.

References QgsRasterInterface::bandStatistics(), QgsMultiBandColorRenderer::blueBand(), QgsRaster::ContrastEnhancementCumulativeCut, QgsRaster::ContrastEnhancementMinMax, QgsRaster::ContrastEnhancementStdDev, CUMULATIVE_CUT_LOWER, CUMULATIVE_CUT_UPPER, QgsRasterInterface::cumulativeCut(), QgsRasterDataProvider::dataType(), QgsSingleBandGrayRenderer::grayBand(), QgsMultiBandColorRenderer::greenBand(), QgsRectangle::isEmpty(), QgsRasterBandStats::Max, QgsRasterBandStats::maximumValue, mDataProvider, QgsRasterBandStats::Mean, QgsRasterBandStats::mean, QgsRasterBandStats::Min, QgsRasterBandStats::minimumValue, mPipe, QgsDebugMsg, QgsMultiBandColorRenderer::redBand(), QgsRasterPipe::renderer(), QgsMultiBandColorRenderer::setBlueContrastEnhancement(), QgsSingleBandGrayRenderer::setContrastEnhancement(), QgsContrastEnhancement::setContrastEnhancementAlgorithm(), QgsMultiBandColorRenderer::setGreenContrastEnhancement(), QgsContrastEnhancement::setMaximumValue(), QgsContrastEnhancement::setMinimumValue(), QgsMultiBandColorRenderer::setRedContrastEnhancement(), QgsRasterBandStats::StdDev, QgsRasterBandStats::stdDev, and QgsRasterRenderer::type().

Referenced by setDefaultContrastEnhancement().

void QgsRasterLayer::setDataProvider ( const QString & provider )

[ data provider interface ] Set the data provider

Definition at line 775 of file qgsrasterlayer.cpp.

References QgsRaster::AlphaBand, QgsMapLayer::appendError(), QGis::ARGB32, QGis::ARGB32_Premultiplied, QgsRasterInterface::bandCount(), brightnessFilter(), QgsRasterInterface::capabilities(), QgsRasterDataProvider::colorInterpretation(), ColorLayer, QgsRasterDataProvider::colorTable(), QgsRaster::ContinuousPalette, QgsDataProvider::crs(), QgsMapLayer::crs(), QgsDataProvider::dataSourceUri(), QgsRasterDataProvider::dataType(), ERR, QgsDataProvider::error(), QgsRasterDataProvider::extent(), GrayOrUndefined, hueSaturationFilter(), QgsRasterInterface::IdentifyFeature, QgsRaster::IdentifyFormatFeature, QgsRaster::IdentifyFormatHtml, QgsRasterDataProvider::identifyFormatName(), QgsRaster::IdentifyFormatText, QgsRaster::IdentifyFormatUndefined, QgsRaster::IdentifyFormatValue, QgsRasterInterface::IdentifyHtml, QgsRasterInterface::IdentifyText, QgsRasterInterface::IdentifyValue, QgsProviderRegistry::instance(), QgsColorRampShader::INTERPOLATED, QgsDataProvider::isValid(), lastModified(), mDataProvider, QgsMapLayer::mDataSource, mLastModified, QgsMapLayer::mLayerName, mPipe, mProviderKey, mRasterType, Multiband, QgsRaster::MultiBandColor, QgsMapLayer::mValid, QgsMapLayer::name(), onProgress(), Palette, QgsRaster::PalettedColor, QgsRaster::PaletteIndex, QgsProviderRegistry::provider(), QgsDebugMsg, QgsRasterPipe::remove(), QgsRasterPipe::renderer(), renderer(), resampleFilter(), QgsRasterPipe::set(), QgsRasterRenderer::setAlphaBand(), QgsColorRampShader::setColorRampItemList(), QgsColorRampShader::setColorRampType(), QgsMapLayer::setCrs(), QgsMapLayer::setCustomProperty(), QgsMapLayer::setError(), QgsMapLayer::setExtent(), QgsMapLayer::setLayerName(), QgsRasterShader::setRasterShaderFunction(), setRendererForDrawingStyle(), QgsSingleBandPseudoColorRenderer::setShader(), QgsRaster::SingleBandColorDataStyle, QgsRaster::SingleBandGray, QgsRaster::SingleBandPseudoColor, QgsMapLayer::statusChanged(), QgsRectangle::toString(), QgsCoordinateReferenceSystem::toWkt(), and tr.

Referenced by QgsRasterLayer(), readXml(), and update().

void QgsRasterLayer::setDefaultContrastEnhancement ( )

Set default contrast enhancement.

Definition at line 1070 of file qgsrasterlayer.cpp.

References QgsContrastEnhancement::contrastEnhancementAlgorithmFromString(), QgsRaster::contrastEnhancementLimitsFromString(), dataProvider(), QgsContrastEnhancement::NoEnhancement, QgsDebugMsg, renderer(), setContrastEnhancement(), and QgsRasterBlock::typeSize().

Referenced by QgsRasterLayer().

void QgsRasterLayer::setDrawingStyle ( const QString & theDrawingStyleQString )

Overloaded version of the above function for convenience when restoring from xml.

Implemented mainly for serialisation / deserialisation of settings to xml.

Note: May be deprecated in the future! Use setDrawingStyle( DrawingStyle ) instead.

Definition at line 1126 of file qgsrasterlayer.cpp.

References QgsRaster::MultiBandColor, QgsRaster::MultiBandSingleBandGray, QgsRaster::MultiBandSingleBandPseudoColor, QgsRaster::PalettedColor, QgsRaster::PalettedMultiBandColor, QgsRaster::PalettedSingleBandGray, QgsRaster::PalettedSingleBandPseudoColor, QgsDebugMsg, setRendererForDrawingStyle(), QgsRaster::SingleBandColorDataStyle, QgsRaster::SingleBandGray, QgsRaster::SingleBandPseudoColor, and QgsRaster::UndefinedDrawingStyle.

void QgsRasterLayer::setLayerOrder ( const QStringList & layers )

virtual

Reorders the previously selected sublayers of this layer from bottom to top.

(Useful for providers that manage their own layers, such as WMS)

Reimplemented from QgsMapLayer.

Definition at line 1179 of file qgsrasterlayer.cpp.

References mDataProvider, QgsDebugMsg, and QgsDataProvider::setLayerOrder().

void QgsRasterLayer::setRenderer ( QgsRasterRenderer * theRenderer )

Accessor for drawing style.

Mutator for drawing style Set raster renderer. Takes ownership of the renderer object

Definition at line 1202 of file qgsrasterlayer.cpp.

References mPipe, QgsDebugMsg, and QgsRasterPipe::set().

Referenced by setRendererForDrawingStyle().

void QgsRasterLayer::setRendererForDrawingStyle ( const QgsRaster::DrawingStyle & theDrawingStyle )

private

Sets corresponding renderer for style.

Definition at line 225 of file qgsrasterlayer.cpp.

References QgsRasterRendererRegistry::instance(), mDataProvider, and setRenderer().

Referenced by init(), readXml(), setDataProvider(), and setDrawingStyle().

void QgsRasterLayer::setSubLayerVisibility	(	QString	name,
		bool	vis
	)

virtual

Set the visibility of the given sublayer name.

Reimplemented from QgsMapLayer.

Definition at line 1191 of file qgsrasterlayer.cpp.

References mDataProvider, QgsDebugMsg, and QgsDataProvider::setSubLayerVisibility().

void QgsRasterLayer::showProgress ( int theValue )

[ data provider interface ] A wrapper function to emit a progress update signal

Definition at line 1209 of file qgsrasterlayer.cpp.

References progressUpdate().

void QgsRasterLayer::showStatusMessage ( const QString & theMessage )

slot

Definition at line 1215 of file qgsrasterlayer.cpp.

References QgsMapLayer::statusChanged().

QStringList QgsRasterLayer::subLayers ( ) const

virtual

Returns the sublayers of this layer - Useful for providers that manage their own layers, such as WMS.

Reimplemented from QgsMapLayer.

Definition at line 1224 of file qgsrasterlayer.cpp.

References mDataProvider, and QgsRasterDataProvider::subLayers().

Referenced by QgsMapToolIdentify::identifyRasterLayer().

virtual QDateTime QgsRasterLayer::timestamp ( ) const

inlinevirtual

Time stamp of data source in the moment when data/metadata were loaded by provider.

Reimplemented from QgsMapLayer.

Definition at line 370 of file qgsrasterlayer.h.

void QgsRasterLayer::triggerRepaint ( )

Emit a signal asking for a repaint.

(inherited from maplayer)

Definition at line 1276 of file qgsrasterlayer.cpp.

References QgsMapLayer::repaintRequested().

bool QgsRasterLayer::update ( )

private

Update the layer if it is outdated.

Definition at line 1639 of file qgsrasterlayer.cpp.

References closeDataProvider(), dataChanged(), QgsRasterDataProvider::dataTimestamp(), init(), mDataProvider, mProviderKey, QgsMapLayer::mValid, QgsDebugMsg, setDataProvider(), and QgsRasterDataProvider::timestamp().

Referenced by draw().

void QgsRasterLayer::updateProgress	(	int	theProgress,
		int	theMax
	)

slot

Propagate progress updates from GDAL up to the parent app.

Definition at line 1281 of file qgsrasterlayer.cpp.

References QgsMapLayer::drawingProgress().

int QgsRasterLayer::width ( ) const

Accessor that returns the width of the (unclipped) raster.

Definition at line 1622 of file qgsrasterlayer.cpp.

References mDataProvider, and QgsRasterInterface::xSize().

Referenced by draw().

bool QgsRasterLayer::writeSymbology	(	QDomNode &	layer_node,
		QDomDocument &	doc,
		QString &	errorMessage
	)		const

protectedvirtual

Write the symbology for the layer into the docment provided.

Implements QgsMapLayer.

Definition at line 1536 of file qgsrasterlayer.cpp.

References QgsMapLayer::blendMode(), QgsMapRenderer::getBlendModeEnum(), mPipe, and QgsRasterPipe::size().

Referenced by writeXml().

bool QgsRasterLayer::writeXml	(	QDomNode &	layer_node,
		QDomDocument &	doc
	)

protectedvirtual

Write layer specific state to project file Dom node.

Reimplemented from QgsMapLayer.

Definition at line 1567 of file qgsrasterlayer.cpp.

References QgsRasterInterface::bandCount(), QgsMessageLog::logMessage(), QgsRasterRange::max(), mDataProvider, QgsRasterRange::min(), mProviderKey, tr, QgsRasterDataProvider::userNoDataValues(), QgsRasterDataProvider::useSrcNoDataValue(), and writeSymbology().

Member Data Documentation

const double QgsRasterLayer::CUMULATIVE_CUT_LOWER = 0.02

static

Default cumulative cut lower limit.

Definition at line 172 of file qgsrasterlayer.h.

Referenced by QgsRasterMinMaxWidget::QgsRasterMinMaxWidget(), and setContrastEnhancement().

const double QgsRasterLayer::CUMULATIVE_CUT_UPPER = 0.98

static

Default cumulative cut upper limit.

Definition at line 175 of file qgsrasterlayer.h.

Referenced by QgsRasterMinMaxWidget::QgsRasterMinMaxWidget(), and setContrastEnhancement().

QgsRasterDataProvider* QgsRasterLayer::mDataProvider

private

Pointer to data provider.

Definition at line 422 of file qgsrasterlayer.h.

Referenced by bandCount(), closeDataProvider(), dataProvider(), draw(), height(), metadata(), paletteAsPixmap(), previewAsPixmap(), rasterUnitsPerPixelX(), rasterUnitsPerPixelY(), readXml(), reload(), setContrastEnhancement(), setDataProvider(), setLayerOrder(), setRendererForDrawingStyle(), setSubLayerVisibility(), subLayers(), update(), width(), and writeXml().

QString QgsRasterLayer::mError

private

[ data provider interface ]The error message associated with the last error

Definition at line 427 of file qgsrasterlayer.h.

Referenced by lastError().

QString QgsRasterLayer::mErrorCaption

private

[ data provider interface ] The error caption associated with the last error

Definition at line 430 of file qgsrasterlayer.h.

Referenced by lastErrorTitle().

QDateTime QgsRasterLayer::mLastModified

private

[ data provider interface ] Timestamp, the last modified time of the data source when the layer was created

Definition at line 433 of file qgsrasterlayer.h.

Referenced by setDataProvider().

QgsRasterViewPort QgsRasterLayer::mLastViewPort

private

Definition at line 435 of file qgsrasterlayer.h.

Referenced by draw(), and init().

QgsRasterPipe QgsRasterLayer::mPipe

private

Definition at line 442 of file qgsrasterlayer.h.

Referenced by closeDataProvider(), draw(), legendSymbologyItems(), readSymbology(), setContrastEnhancement(), setDataProvider(), setRenderer(), and writeSymbology().

QString QgsRasterLayer::mProviderKey

private

[ data provider interface ] Data provider key

Definition at line 438 of file qgsrasterlayer.h.

Referenced by providerType(), readXml(), setDataProvider(), update(), and writeXml().

LayerType QgsRasterLayer::mRasterType

private

Definition at line 440 of file qgsrasterlayer.h.

Referenced by init(), and setDataProvider().

const QString QgsRasterLayer::QSTRING_NOT_SET

private

Constant defining flag for XML and a constant that signals property not used.

Definition at line 418 of file qgsrasterlayer.h.

const double QgsRasterLayer::SAMPLE_SIZE = 250000

static

Default sample size (number of pixels) for estimated statistics/histogram calculation.

Definition at line 178 of file qgsrasterlayer.h.

const QString QgsRasterLayer::TRSTRING_NOT_SET

private

Definition at line 419 of file qgsrasterlayer.h.

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

/tmp/buildd/qgis-2.0.1/src/core/raster/qgsrasterlayer.h
/tmp/buildd/qgis-2.0.1/src/core/raster/qgsrasterlayer.cpp

Public Types

Public Slots

Signals

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation