51#include "qgsgdalprovider.h"
69#include <QApplication>
77#include <QFontMetrics>
84#include <QRegularExpression>
91#define ERR(message) QGS_ERROR_MESSAGE(message,"Raster layer")
111 , QSTRING_NOT_SET( QStringLiteral(
"Not Set" ) )
112 , TRSTRING_NOT_SET( tr(
"Not Set" ) )
122 const QString &baseName,
123 const QString &providerKey,
127 , QSTRING_NOT_SET( QStringLiteral(
"Not Set" ) )
128 , TRSTRING_NOT_SET( tr(
"Not Set" ) )
145 setDataSource( uri, baseName, providerKey, providerOptions, providerFlags );
171 std::unique_ptr< QgsRasterLayer > layer = std::make_unique< QgsRasterLayer >(
source(),
name(),
mProviderKey, options );
173 layer->mElevationProperties = mElevationProperties->
clone();
174 layer->mElevationProperties->setParent( layer.get() );
179 for (
int i = 1; i < mPipe->size(); i++ )
181 if ( mPipe->at( i ) )
182 layer->pipe()->set( mPipe->at( i )->clone() );
185 layer->setResamplingStage( mPipe->resamplingStage() );
186 if ( mDataProvider && layer->dataProvider() )
192 return layer.release();
199 if ( !mElevationProperties->
isEnabled() )
213 const bool myIsValid = QgsGdalProvider::isValidRasterFileName( fileNameQString, retErrMsg );
228 const QFileInfo fi(
name );
234 t = fi.lastModified();
261 if ( !mDataProvider )
return 0;
269 if ( !mDataProvider )
return QString();
277 if ( !mDataProvider )
286 if ( !mDataProvider )
290 for (
int bandNo = 1; bandNo <=
bandCount(); ++bandNo )
318 return mDataProvider;
325 return mDataProvider;
363 bool restoreOldResamplingStage =
false;
371 if ( mDataProvider &&
376 restoreOldResamplingStage =
true;
385 drawer.
draw( theQPainter, rasterViewPort, qgsMapToPixel );
387 if ( restoreOldResamplingStage )
392 QgsDebugMsgLevel( QStringLiteral(
"total raster draw time (ms): %1" ).arg( time.elapsed(), 5 ), 4 );
407 if ( !mDataProvider )
411 QString myMetadata = QStringLiteral(
"<html><head></head>\n<body>\n" );
416 myMetadata += QStringLiteral(
"<h1>" ) + tr(
"Information from provider" ) + QStringLiteral(
"</h1>\n<hr>\n" ) + QStringLiteral(
"<table class=\"list-view\">\n" );
418 myMetadata += QStringLiteral(
"\n" ) %
420 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Extent" ) % QStringLiteral(
"</td><td>" ) %
extent().
toString() % QStringLiteral(
"</td></tr>\n" ) %
423 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Width" ) % QStringLiteral(
"</td><td>" );
425 myMetadata += QString::number(
width() );
427 myMetadata += tr(
"n/a" );
428 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
431 QStringLiteral(
"<tr><td class=\"highlight\">" ) + tr(
"Height" ) + QStringLiteral(
"</td><td>" );
433 myMetadata += QString::number(
height() );
435 myMetadata += tr(
"n/a" );
436 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
439 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Data type" ) % QStringLiteral(
"</td><td>" );
444 myMetadata += tr(
"Byte - Eight bit unsigned integer" );
447 myMetadata += tr(
"Int8 - Eight bit signed integer" );
450 myMetadata += tr(
"UInt16 - Sixteen bit unsigned integer " );
453 myMetadata += tr(
"Int16 - Sixteen bit signed integer " );
456 myMetadata += tr(
"UInt32 - Thirty two bit unsigned integer " );
459 myMetadata += tr(
"Int32 - Thirty two bit signed integer " );
462 myMetadata += tr(
"Float32 - Thirty two bit floating point " );
465 myMetadata += tr(
"Float64 - Sixty four bit floating point " );
468 myMetadata += tr(
"CInt16 - Complex Int16 " );
471 myMetadata += tr(
"CInt32 - Complex Int32 " );
474 myMetadata += tr(
"CFloat32 - Complex Float32 " );
477 myMetadata += tr(
"CFloat64 - Complex Float64 " );
480 myMetadata += tr(
"Could not determine raster data type." );
482 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
488 QStringLiteral(
"</table>\n<br><br>" );
494 myMetadata += QStringLiteral(
"<h1>" ) % tr(
"Identification" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
496 QStringLiteral(
"<br><br>\n" ) %
499 QStringLiteral(
"<h1>" ) % tr(
"Extent" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
501 QStringLiteral(
"<br><br>\n" ) %
504 QStringLiteral(
"<h1>" ) % tr(
"Access" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
506 QStringLiteral(
"<br><br>\n" ) %
509 QStringLiteral(
"</table>\n<br><br><h1>" ) % tr(
"Bands" ) % QStringLiteral(
"</h1>\n<hr>\n<table class=\"list-view\">\n" ) %
512 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Band count" ) % QStringLiteral(
"</td><td>" ) % QString::number(
bandCount() ) % QStringLiteral(
"</td></tr>\n" );
515 myMetadata += QStringLiteral(
"</table>\n<br><table width=\"100%\" class=\"tabular-view\">\n" ) %
516 QStringLiteral(
"<tr><th>" ) % tr(
"Number" ) % QStringLiteral(
"</th><th>" ) % tr(
"Band" ) % QStringLiteral(
"</th><th>" ) % tr(
"NoData" ) % QStringLiteral(
"</th><th>" ) %
517 tr(
"Min" ) % QStringLiteral(
"</th><th>" ) % tr(
"Max" ) % QStringLiteral(
"</th></tr>\n" );
524 rowClass = QStringLiteral(
"class=\"odd-row\"" );
526 myMetadata += QStringLiteral(
"<tr " ) % rowClass % QStringLiteral(
"><td>" ) % QString::number( i ) % QStringLiteral(
"</td><td>" ) %
bandName( i ) % QStringLiteral(
"</td><td>" );
529 myMetadata += QString::number(
dataProvider()->sourceNoDataValue( i ) );
531 myMetadata += tr(
"n/a" );
532 myMetadata += QLatin1String(
"</td>" );
537 myMetadata += QStringLiteral(
"<td>" ) % QString::number( myRasterBandStats.
minimumValue,
'f', 10 ) % QStringLiteral(
"</td>" ) %
538 QStringLiteral(
"<td>" ) % QString::number( myRasterBandStats.
maximumValue,
'f', 10 ) % QStringLiteral(
"</td>" );
542 myMetadata += QStringLiteral(
"<td>" ) % tr(
"n/a" ) % QStringLiteral(
"</td><td>" ) % tr(
"n/a" ) % QStringLiteral(
"</td>" );
545 myMetadata += QLatin1String(
"</tr>\n" );
549 myMetadata += QStringLiteral(
"</table>\n<br><br>" ) %
552 QStringLiteral(
"<h1>" ) % tr(
"Contacts" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
554 QStringLiteral(
"<br><br>\n" ) %
557 QStringLiteral(
"<h1>" ) % tr(
"References" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
559 QStringLiteral(
"<br><br>\n" ) %
562 QStringLiteral(
"<h1>" ) % tr(
"History" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
564 QStringLiteral(
"<br><br>\n" ) %
566 QStringLiteral(
"\n</body>\n</html>\n" );
591 if ( mDataProvider &&
596 const QList<QgsColorRampShader::ColorRampItem> myColorRampItemList = mDataProvider->
colorTable( bandNumber );
597 if ( !myColorRampItemList.isEmpty() )
603 const int mySize = 100;
604 QPixmap myPalettePixmap( mySize, mySize );
605 QPainter myQPainter( &myPalettePixmap );
607 QImage myQImage = QImage( mySize, mySize, QImage::Format_RGB32 );
609 myPalettePixmap.fill();
611 const double myStep = (
static_cast< double >( myColorRampItemList.size() ) - 1 ) /
static_cast< double >( mySize * mySize );
612 double myValue = 0.0;
613 for (
int myRow = 0; myRow < mySize; myRow++ )
615 QRgb *myLineBuffer =
reinterpret_cast< QRgb *
>( myQImage.scanLine( myRow ) );
616 for (
int myCol = 0; myCol < mySize; myCol++ )
618 myValue = myStep *
static_cast< double >( myCol + myRow * mySize );
620 myShader.
shade( myValue, &c1, &c2, &c3, &c4 );
621 myLineBuffer[ myCol ] = qRgba( c1, c2, c3, c4 );
625 myQPainter.drawImage( 0, 0, myQImage );
626 return myPalettePixmap;
628 const QPixmap myNullPixmap;
634 const QPixmap myNullPixmap;
656 if ( mDataProvider &&
668 if ( mDataProvider &&
680 if ( !mPipe->renderer() || mPipe->renderer()->opacity() ==
opacity )
683 mPipe->renderer()->setOpacity(
opacity );
692 return mPipe->renderer() ? mPipe->renderer()->opacity() : 1.0;
695void QgsRasterLayer::init()
718 mPipe = std::make_unique< QgsRasterPipe >();
719 mDataProvider =
nullptr;
735 mDataProvider = qobject_cast< QgsRasterDataProvider * >(
mPreloadedProvider.release() );
739 std::unique_ptr< QgsScopedRuntimeProfile > profile;
741 profile = std::make_unique< QgsScopedRuntimeProfile >( tr(
"Create %1 provider" ).arg( provider ), QStringLiteral(
"projectload" ) );
746 if ( !mDataProvider )
753 mDataProvider->setParent(
this );
756 mPipe->set( mDataProvider );
757 if ( !mDataProvider->
isValid() )
767 QgsDebugMsgLevel( QStringLiteral(
"Set Data provider QgsLayerMetadata identifier[%1]" ).arg(
metadata().identifier() ), 4 );
770 if ( provider == QLatin1String(
"gdal" ) )
845 QString errorMessage;
849 errorMessage.clear();
850 QgsDebugMsgLevel(
"Native Raster Raster Attribute Table read failed " + errorMessage, 2 );
851 if ( QFile::exists( mDataProvider->
dataSourceUri( ) +
".vat.dbf" ) )
853 std::unique_ptr<QgsRasterAttributeTable> rat = std::make_unique<QgsRasterAttributeTable>();
854 hasRat = rat->readFromFile( mDataProvider->
dataSourceUri( ) +
".vat.dbf", &errorMessage );
857 if ( rat->isValid( &errorMessage ) )
864 QgsDebugMsgLevel(
"DBF Raster Attribute Table is not valid, skipping: " + errorMessage, 2 );
869 QgsDebugMsgLevel(
"DBF Raster Attribute Table read failed " + errorMessage, 2 );
878 switch ( mRasterType )
896 const QList<QgsColorRampShader::ColorRampItem> colorTable = mDataProvider->
colorTable( 1 );
928 for (
int bandNo = 1; bandNo <= mDataProvider->
bandCount(); bandNo++ )
932 if (
auto *lRenderer = mPipe->renderer() )
934 lRenderer->setAlphaBand( bandNo );
955 QString resampling = settings.
value( QStringLiteral(
"/Raster/defaultZoomedInResampling" ), QStringLiteral(
"nearest neighbour" ) ).toString();
956 if ( resampling == QLatin1String(
"bilinear" ) )
961 else if ( resampling == QLatin1String(
"cubic" ) )
966 resampling = settings.
value( QStringLiteral(
"/Raster/defaultZoomedOutResampling" ), QStringLiteral(
"nearest neighbour" ) ).toString();
967 if ( resampling == QLatin1String(
"bilinear" ) )
990 mPipe->set( projector );
1042void QgsRasterLayer::setDataSourcePrivate(
const QString &dataSource,
const QString &baseName,
const QString &provider,
1047 const bool hadRenderer(
renderer() );
1049 QDomImplementation domImplementation;
1050 QDomDocumentType documentType;
1053 bool loadDefaultStyleFlag =
false;
1056 loadDefaultStyleFlag =
true;
1060 if ( hadRenderer && ! loadDefaultStyleFlag )
1062 documentType = domImplementation.createDocumentType(
1063 QStringLiteral(
"qgis" ), QStringLiteral(
"http://mrcc.com/qgis.dtd" ), QStringLiteral(
"SYSTEM" ) );
1065 QDomDocument doc = QDomDocument( documentType );
1066 QDomElement styleElem = doc.createElement( QStringLiteral(
"qgis" ) );
1067 styleElem.setAttribute( QStringLiteral(
"version" ),
Qgis::version() );
1069 if ( !
writeSymbology( styleElem, doc, errorMsg, writeContext ) )
1071 QgsDebugError( QStringLiteral(
"Could not store symbology for layer %1: %2" )
1077 doc.appendChild( styleElem );
1079 mOriginalStyleDocument = doc;
1080 mOriginalStyleElement = styleElem;
1084 if ( mDataProvider )
1085 closeDataProvider();
1089 for (
int i = mPipe->size() - 1; i >= 0; --i )
1099 if ( mDataProvider )
1105 bool defaultLoadedFlag =
false;
1106 bool restoredStyle =
false;
1107 if ( loadDefaultStyleFlag )
1111 else if ( !mOriginalStyleElement.isNull() )
1114 if ( !
readSymbology( mOriginalStyleElement, errorMsg, readContext ) )
1116 QgsDebugError( QStringLiteral(
"Could not restore symbology for layer %1: %2" )
1123 restoredStyle =
true;
1130 if ( !defaultLoadedFlag && !restoredStyle )
1137void QgsRasterLayer::writeRasterAttributeTableExternalPaths( QDomNode &layerNode, QDomDocument &doc,
const QgsReadWriteContext &context )
const
1143 QDomElement elem = doc.createElement( QStringLiteral(
"FileBasedAttributeTables" ) );
1144 for (
int bandNo = 1; bandNo <=
bandCount(); bandNo++ )
1148 QDomElement ratElem = doc.createElement( QStringLiteral(
"AttributeTable" ) );
1149 ratElem.setAttribute( QStringLiteral(
"band" ), bandNo );
1150 ratElem.setAttribute( QStringLiteral(
"path" ), context.
pathResolver().
writePath( rat->filePath( ) ) );
1151 elem.appendChild( ratElem );
1154 layerNode.appendChild( elem );
1158void QgsRasterLayer::readRasterAttributeTableExternalPaths(
const QDomNode &layerNode,
QgsReadWriteContext &context )
const
1160 const QDomElement ratsElement = layerNode.firstChildElement( QStringLiteral(
"FileBasedAttributeTables" ) );
1161 if ( !ratsElement.isNull() && ratsElement.childNodes().count() > 0 )
1163 const QDomNodeList ratElements { ratsElement.childNodes() };
1164 for (
int idx = 0; idx < ratElements.count(); idx++ )
1166 const QDomNode ratElement { ratElements.at( idx ) };
1167 if ( ratElement.attributes().contains( QStringLiteral(
"band" ) )
1168 && ratElement.attributes().contains( QStringLiteral(
"path" ) ) )
1171 const int band { ratElement.attributes().namedItem( QStringLiteral(
"band" ) ).nodeValue().toInt( &ok ) };
1174 if ( ! ok || band <= 0 || band >
bandCount() )
1176 QgsMessageLog::logMessage( tr(
"Error reading raster attribute table: invalid band %1." ).arg( band ), tr(
"Raster" ) );
1180 const QString path { context.
pathResolver().
readPath( ratElement.attributes().namedItem( QStringLiteral(
"path" ) ).nodeValue() ) };
1181 if ( ! QFile::exists( path ) )
1183 QgsMessageLog::logMessage( tr(
"Error loading raster attribute table, file not found: %1." ).arg( path ), tr(
"Raster" ) );
1187 std::unique_ptr<QgsRasterAttributeTable> rat = std::make_unique<QgsRasterAttributeTable>();
1188 QString errorMessage;
1189 if ( ! rat->readFromFile( path, &errorMessage ) )
1191 QgsMessageLog::logMessage( tr(
"Error loading raster attribute table from path %1: %2" ).arg( path, errorMessage ), tr(
"Raster" ) );
1202void QgsRasterLayer::closeDataProvider()
1207 mPipe->remove( mDataProvider );
1208 mDataProvider =
nullptr;
1211void QgsRasterLayer::computeMinMax(
int band,
1216 double &min,
double &max )
1220 min = std::numeric_limits<double>::quiet_NaN();
1221 max = std::numeric_limits<double>::quiet_NaN();
1222 if ( !mDataProvider )
1232 switch ( mDataProvider->
dataType( band ) )
1242 myRasterBandStats.
minimumValue = std::numeric_limits<int8_t>::lowest();
1243 myRasterBandStats.
maximumValue = std::numeric_limits<int8_t>::max();
1249 myRasterBandStats.
maximumValue = std::numeric_limits<uint16_t>::max();
1255 myRasterBandStats.
maximumValue = std::numeric_limits<uint32_t>::max();
1261 myRasterBandStats.
minimumValue = std::numeric_limits<int16_t>::lowest();
1262 myRasterBandStats.
maximumValue = std::numeric_limits<int16_t>::max();
1268 myRasterBandStats.
minimumValue = std::numeric_limits<int32_t>::lowest();
1269 myRasterBandStats.
maximumValue = std::numeric_limits<int32_t>::max();
1275 myRasterBandStats.
minimumValue = std::numeric_limits<float_t>::lowest();
1276 myRasterBandStats.
maximumValue = std::numeric_limits<float_t>::max();
1282 myRasterBandStats.
minimumValue = std::numeric_limits<double_t>::lowest();
1283 myRasterBandStats.
maximumValue = std::numeric_limits<double_t>::max();
1308 QgsDebugMsgLevel( QStringLiteral(
"myLower = %1 myUpper = %2" ).arg( myLower ).arg( myUpper ), 4 );
1311 QgsDebugMsgLevel( QStringLiteral(
"band = %1 min = %2 max = %3" ).arg( band ).arg( min ).arg( max ), 4 );
1319 return mDataProvider ? mDataProvider->
ignoreExtents() :
false;
1326 return mTemporalProperties;
1333 return mElevationProperties;
1344 generateLookupTableFlag,
1345 mPipe->renderer() );
1352 bool generateLookupTableFlag,
1358 if ( !rasterRenderer || !mDataProvider )
1364 QList<QgsContrastEnhancement *> myEnhancements;
1370 const QString rendererType = rasterRenderer->
type();
1371 if ( rendererType == QLatin1String(
"singlebandgray" ) )
1374 if ( !myGrayRenderer )
1379 myRasterRenderer = myGrayRenderer;
1382 else if ( rendererType == QLatin1String(
"multibandcolor" ) )
1385 if ( !myMultiBandRenderer )
1390 myRasterRenderer = myMultiBandRenderer;
1393 else if ( rendererType == QLatin1String(
"singlebandpseudocolor" ) )
1396 if ( !myPseudoColorRenderer )
1400 myBands << myPseudoColorRenderer->
inputBand();
1401 myRasterRenderer = myPseudoColorRenderer;
1402 myMinMaxOrigin = myPseudoColorRenderer->
minMaxOrigin();
1409 const auto constMyBands = myBands;
1410 for (
const int myBand : constMyBands )
1416 myEnhancement->setContrastEnhancementAlgorithm(
algorithm, generateLookupTableFlag );
1420 computeMinMax( myBand, myMinMaxOrigin, limits,
extent, sampleSize, min, max );
1422 if ( rendererType == QLatin1String(
"singlebandpseudocolor" ) )
1425 if ( ! myPseudoColorRenderer )
1433 bool minMaxChanged {
false };
1434 if ( ! std::isnan( min ) )
1437 minMaxChanged =
true;
1440 if ( ! std::isnan( max ) )
1443 minMaxChanged =
true;
1446 if ( minMaxChanged && myPseudoColorRenderer->
shader() )
1449 if ( colorRampShader )
1457 myEnhancement->setMinimumValue( min );
1458 myEnhancement->setMaximumValue( max );
1459 myEnhancements.append( myEnhancement.release() );
1464 myEnhancements.append(
nullptr );
1469 if ( rendererType == QLatin1String(
"singlebandgray" ) && myGrayRenderer )
1473 else if ( rendererType == QLatin1String(
"multibandcolor" ) && myMultiBandRenderer )
1481 qDeleteAll( myEnhancements );
1489 if ( myRasterRenderer )
1494 if ( rasterRenderer ==
renderer() )
1511 ce = singleBandRenderer->contrastEnhancement();
1550 if ( mDataProvider &&
1551 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded !=
extent &&
1555 refreshRenderer( rasterRenderer,
extent );
1563 if ( mDataProvider )
1579 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded =
extent;
1592 if ( colorRampShader )
1605 if ( colorRampShader )
1620 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded =
extent;
1630 if ( singleBandRenderer )
1632 else if ( multiBandRenderer )
1658 if ( !
isValid() || !mDataProvider )
1660 QgsDebugMsgLevel( QStringLiteral(
"invoked with invalid layer or null mDataProvider" ), 3 );
1661 return customProperty( QStringLiteral(
"storedSubsetString" ) ).toString();
1674 if ( !
isValid() || !mDataProvider )
1676 QgsDebugMsgLevel( QStringLiteral(
"invoked with invalid layer or null mDataProvider or while editing" ), 3 );
1714 QString defaultLimits;
1719 key = QStringLiteral(
"singleBand" );
1729 key = QStringLiteral(
"multiBandSingleByte" );
1737 key = QStringLiteral(
"multiBandMultiByte" );
1745 if ( key.isEmpty() )
1747 QgsDebugMsgLevel( QStringLiteral(
"No default contrast enhancement for this drawing style" ), 2 );
1754 const QString myAlgorithmString = mySettings.value(
"/Raster/defaultContrastEnhancementAlgorithm/" + key, defaultAlg ).toString();
1759 const QString myLimitsString = mySettings.value(
"/Raster/defaultContrastEnhancementLimits/" + key, defaultLimits ).toString();
1785 if ( mDataProvider )
1787 QgsDebugMsgLevel( QStringLiteral(
"About to mDataProvider->setLayerOrder(layers)." ), 4 );
1797 if ( mDataProvider )
1799 QgsDebugMsgLevel( QStringLiteral(
"About to mDataProvider->setSubLayerVisibility(name, vis)." ), 4 );
1808 if ( !mDataProvider )
1817 if (
auto *lRenderer = mPipe->renderer() )
1819 if ( !lRenderer->accept( visitor ) )
1830 Q_UNUSED( errorMessage )
1832 QVariantMap localProps = QVariantMap( props );
1842 QDomElement constraintElem = doc.createElement( QStringLiteral(
"sld:LayerFeatureConstraints" ) );
1843 node.appendChild( constraintElem );
1845 const QDomElement featureTypeConstraintElem = doc.createElement( QStringLiteral(
"sld:FeatureTypeConstraint" ) );
1846 constraintElem.appendChild( featureTypeConstraintElem );
1848 QDomElement userStyleElem = doc.createElement( QStringLiteral(
"sld:UserStyle" ) );
1849 node.appendChild( userStyleElem );
1851 if ( !
name().isEmpty() )
1853 QDomElement nameElem = doc.createElement( QStringLiteral(
"sld:Name" ) );
1854 nameElem.appendChild( doc.createTextNode(
name() ) );
1855 userStyleElem.appendChild( nameElem );
1861 QDomElement abstractElem = doc.createElement( QStringLiteral(
"sld:Abstract" ) );
1862 abstractElem.appendChild( doc.createTextNode(
abstract ) );
1863 userStyleElem.appendChild( abstractElem );
1867 if ( !
title.isEmpty() )
1869 QDomElement titleElem = doc.createElement( QStringLiteral(
"sld:Title" ) );
1870 titleElem.appendChild( doc.createTextNode(
title ) );
1871 userStyleElem.appendChild( titleElem );
1874 QDomElement featureTypeStyleElem = doc.createElement( QStringLiteral(
"sld:FeatureTypeStyle" ) );
1875 userStyleElem.appendChild( featureTypeStyleElem );
1885 QDomElement typeStyleNameElem = doc.createElement( QStringLiteral(
"sld:Name" ) );
1886 featureTypeStyleElem.appendChild( typeStyleNameElem );
1889 QDomElement typeStyleRuleElem = doc.createElement( QStringLiteral(
"sld:Rule" ) );
1890 featureTypeStyleElem.appendChild( typeStyleRuleElem );
1898 QDomElement minScaleElem = doc.createElement( QStringLiteral(
"sld:MinScaleDenominator" ) );
1899 minScaleElem.appendChild( doc.createTextNode( QString::number(
maximumScale() ) ) );
1900 typeStyleRuleElem.appendChild( minScaleElem );
1903 QDomElement maxScaleElem = doc.createElement( QStringLiteral(
"sld:MaxScaleDenominator" ) );
1904 maxScaleElem.appendChild( doc.createTextNode( QString::number(
minimumScale() ) ) );
1905 typeStyleRuleElem.appendChild( maxScaleElem );
1909 mPipe->renderer()->toSld( doc, typeStyleRuleElem, localProps );
1914 const QDomNodeList elements = typeStyleRuleElem.elementsByTagName( QStringLiteral(
"sld:RasterSymbolizer" ) );
1915 if ( elements.size() != 0 )
1918 QDomElement rasterSymbolizerElem = elements.at( 0 ).toElement();
1921 auto vendorOptionWriter = [&]( QString
name, QString value )
1923 QDomElement vendorOptionElem = doc.createElement( QStringLiteral(
"sld:VendorOption" ) );
1924 vendorOptionElem.setAttribute( QStringLiteral(
"name" ),
name );
1925 vendorOptionElem.appendChild( doc.createTextNode( value ) );
1926 rasterSymbolizerElem.appendChild( vendorOptionElem );
1931 vendorOptionWriter( QStringLiteral(
"invertColors" ), QString::number( 1 ) );
1941 property = QStringLiteral(
"lightness" );
1944 property = QStringLiteral(
"luminosity" );
1947 property = QStringLiteral(
"average" );
1953 if ( !property.isEmpty() )
1954 vendorOptionWriter( QStringLiteral(
"grayScale" ), property );
1960 vendorOptionWriter( QStringLiteral(
"colorizeOn" ), QString::number(
hueSaturationFilter()->colorizeOn() ) );
1961 vendorOptionWriter( QStringLiteral(
"colorizeRed" ), QString::number(
hueSaturationFilter()->colorizeColor().red() ) );
1962 vendorOptionWriter( QStringLiteral(
"colorizeGreen" ), QString::number(
hueSaturationFilter()->colorizeColor().green() ) );
1963 vendorOptionWriter( QStringLiteral(
"colorizeBlue" ), QString::number(
hueSaturationFilter()->colorizeColor().blue() ) );
1965 vendorOptionWriter( QStringLiteral(
"colorizeStrength" ), QString::number(
hueSaturationFilter()->colorizeStrength() / 100.0 ) );
1966 vendorOptionWriter( QStringLiteral(
"saturation" ), QString::number(
hueSaturationFilter()->colorizeColor().saturationF() ) );
1975 const double sF = ( s - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
1976 vendorOptionWriter( QStringLiteral(
"saturation" ), QString::number( sF ) );
1985 const double bF = ( b - ( -255.0 ) ) / ( 255.0 - ( -255.0 ) );
1986 vendorOptionWriter( QStringLiteral(
"brightness" ), QString::number( bF ) );
1994 const double cF = (
c - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
1995 vendorOptionWriter( QStringLiteral(
"contrast" ), QString::number( cF ) );
2009 if ( newProps.contains( QStringLiteral(
"contrast" ) ) )
2012 double contrast = newProps[ QStringLiteral(
"contrast" ) ].toDouble();
2013 double percentage = ( contrast - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
2014 if ( percentage <= 0.5 )
2017 gamma = percentage / 0.5;
2024 QDomElement globalContrastEnhancementElem = doc.createElement( QStringLiteral(
"sld:ContrastEnhancement" ) );
2025 rasterSymolizerElem.appendChild( globalContrastEnhancementElem );
2027 QDomElement gammaValueElem = doc.createElement( QStringLiteral(
"sld:GammaValue" ) );
2028 gammaValueElem.appendChild( doc.createTextNode( QString::number( gamma ) ) );
2029 globalContrastEnhancementElem.appendChild( gammaValueElem );
2056 return mPipe->renderer();
2063 return mPipe->resampleFilter();
2070 return mPipe->brightnessFilter();
2077 return mPipe->hueSaturationFilter();
2095 if ( mDataProvider )
2104 if ( ! mDataProvider )
2105 return QStringList();
2115 QImage image( size, format );
2120 if ( image.format() == QImage::Format_Indexed8 )
2122 image.setColor( 0, bgColor.rgba() );
2127 image.fill( bgColor );
2132 double mapUnitsPerPixel;
2138 mapUnitsPerPixel =
extent.
width() / image.width();
2139 y = ( image.height() -
extent.
height() / mapUnitsPerPixel ) / 2;
2144 x = ( image.width() -
extent.
width() / mapUnitsPerPixel ) / 2;
2147 const double pixelWidth =
extent.
width() / mapUnitsPerPixel;
2148 const double pixelHeight =
extent.
height() / mapUnitsPerPixel;
2152 rasterViewPort->
mWidth = image.width();
2153 rasterViewPort->
mHeight = image.height();
2161 QPainter *painter =
new QPainter( &image );
2162 draw( painter, rasterViewPort, mapToPixel );
2163 delete rasterViewPort;
2177 Q_UNUSED( errorMessage )
2180 QDomElement rasterRendererElem;
2182 const QDomElement layerElement = layer_node.toElement();
2192 QDomNode pipeNode = layer_node.firstChildElement( QStringLiteral(
"pipe" ) );
2193 if ( pipeNode.isNull() )
2195 pipeNode = layer_node;
2199 if ( !layer_node.firstChildElement( QStringLiteral(
"rasterproperties" ) ).isNull() )
2202 QDomNode layerNodeCopy = layer_node.cloneNode();
2203 QDomDocument doc = layerNodeCopy.ownerDocument();
2204 QDomElement rasterPropertiesElem = layerNodeCopy.firstChildElement( QStringLiteral(
"rasterproperties" ) );
2207 rasterRendererElem = layerNodeCopy.firstChildElement( QStringLiteral(
"rasterrenderer" ) );
2212 rasterRendererElem = pipeNode.firstChildElement( QStringLiteral(
"rasterrenderer" ) );
2215 if ( !rasterRendererElem.isNull() )
2217 const QString rendererType = rasterRendererElem.attribute( QStringLiteral(
"type" ) );
2231 const QDomElement brightnessElem = pipeNode.firstChildElement( QStringLiteral(
"brightnesscontrast" ) );
2232 if ( !brightnessElem.isNull() )
2242 const QDomElement hueSaturationElem = pipeNode.firstChildElement( QStringLiteral(
"huesaturation" ) );
2243 if ( !hueSaturationElem.isNull() )
2253 const QDomElement resampleElem = pipeNode.firstChildElement( QStringLiteral(
"rasterresampler" ) );
2254 if ( !resampleElem.isNull() )
2260 if ( mDataProvider )
2262 const QDomElement providerElem = pipeNode.firstChildElement( QStringLiteral(
"provider" ) );
2263 if ( !providerElem.isNull() )
2265 mDataProvider->
readXml( providerElem );
2270 const QDomNode resamplingStageElement = pipeNode.namedItem( QStringLiteral(
"resamplingStage" ) );
2271 if ( !resamplingStageElement.isNull() )
2273 const QDomElement e = resamplingStageElement.toElement();
2274 if ( e.text() == QLatin1String(
"provider" ) )
2276 else if ( e.text() == QLatin1String(
"resamplingFilter" ) )
2281 const QDomNode blendModeNode = layer_node.namedItem( QStringLiteral(
"blendMode" ) );
2282 if ( !blendModeNode.isNull() )
2284 const QDomElement e = blendModeNode.toElement();
2288 const QDomElement elemDataDefinedProperties = layer_node.firstChildElement( QStringLiteral(
"pipe-data-defined-properties" ) );
2289 if ( !elemDataDefinedProperties.isNull() )
2293 if ( categories.testFlag(
MapTips ) )
2295 QDomElement mapTipElem = layer_node.namedItem( QStringLiteral(
"mapTip" ) ).toElement();
2297 setMapTipsEnabled( mapTipElem.attribute( QStringLiteral(
"enabled" ), QStringLiteral(
"1" ) ).toInt() == 1 );
2303 readRasterAttributeTableExternalPaths( layer_node, context );
2316 return readSymbology( node, errorMessage, context, categories );
2327 const QDomNode pkeyNode = layer_node.namedItem( QStringLiteral(
"provider" ) );
2329 if ( pkeyNode.isNull() )
2335 const QDomElement pkeyElt = pkeyNode.toElement();
2349 const QDomNode rpNode = layer_node.namedItem( QStringLiteral(
"rasterproperties" ) );
2355 if ( !
mDataSource.contains( QLatin1String(
"crs=" ) ) && !
mDataSource.contains( QLatin1String(
"format=" ) ) )
2357 QgsDebugMsgLevel( QStringLiteral(
"Old WMS URI format detected -> adding params" ), 4 );
2360 QDomElement layerElement = rpNode.firstChildElement( QStringLiteral(
"wmsSublayer" ) );
2361 while ( !layerElement.isNull() )
2366 uri.
setParam( QStringLiteral(
"layers" ), layerElement.namedItem( QStringLiteral(
"name" ) ).toElement().text() );
2369 uri.
setParam( QStringLiteral(
"styles" ), layerElement.namedItem( QStringLiteral(
"style" ) ).toElement().text() );
2371 layerElement = layerElement.nextSiblingElement( QStringLiteral(
"wmsSublayer" ) );
2375 uri.
setParam( QStringLiteral(
"format" ), rpNode.namedItem( QStringLiteral(
"wmsFormat" ) ).toElement().text() );
2379 uri.
setParam( QStringLiteral(
"crs" ),
crs().authid() );
2392 const QDomNode extentNode = layer_node.namedItem( QStringLiteral(
"extent" ) );
2393 if ( !extentNode.isNull() )
2405 mOriginalStyleElement = layer_node.namedItem( QStringLiteral(
"originalStyle" ) ).firstChildElement();
2406 if ( mOriginalStyleElement.isNull() )
2407 mOriginalStyleElement = layer_node.toElement();
2408 mOriginalStyleDocument = layer_node.ownerDocument();
2410 if ( ! mDataProvider )
2434 QDomNode stampNode = layer_node.namedItem(
"timestamp" );
2435 if ( !stampNode.isNull() )
2437 QDateTime stamp = QDateTime::fromString( stampNode.toElement().text(), Qt::ISODate );
2439 if ( stamp < mDataProvider->dataTimestamp() )
2442 closeDataProvider();
2445 if ( !
isValid() )
return false;
2451 const QDomElement noDataElement = layer_node.firstChildElement( QStringLiteral(
"noData" ) );
2453 const QDomNodeList noDataBandList = noDataElement.elementsByTagName( QStringLiteral(
"noDataList" ) );
2455 for (
int i = 0; mDataProvider && i < noDataBandList.size(); ++i )
2457 const QDomElement bandElement = noDataBandList.at( i ).toElement();
2459 const int bandNo = bandElement.attribute( QStringLiteral(
"bandNo" ) ).toInt( &ok );
2461 if ( ok && ( bandNo > 0 ) && ( bandNo <= mDataProvider->
bandCount() ) )
2463 mDataProvider->
setUseSourceNoDataValue( bandNo, bandElement.attribute( QStringLiteral(
"useSrcNoData" ) ).toInt() );
2466 const QDomNodeList rangeList = bandElement.elementsByTagName( QStringLiteral(
"noDataRange" ) );
2468 myNoDataRangeList.reserve( rangeList.size() );
2469 for (
int j = 0; j < rangeList.size(); ++j )
2471 const QDomElement rangeElement = rangeList.at( j ).toElement();
2472 const QgsRasterRange myNoDataRange( rangeElement.attribute( QStringLiteral(
"min" ) ).toDouble(),
2473 rangeElement.attribute( QStringLiteral(
"max" ) ).toDouble() );
2474 QgsDebugMsgLevel( QStringLiteral(
"min = %1 %2" ).arg( rangeElement.attribute(
"min" ) ).arg( myNoDataRange.
min() ), 4 );
2475 myNoDataRangeList << myNoDataRange;
2481 readRasterAttributeTableExternalPaths( layer_node, context );
2493 Q_UNUSED( errorMessage )
2496 QDomElement layerElement = layer_node.toElement();
2501 if ( categories.testFlag(
MapTips ) )
2503 QDomElement mapTipElem = document.createElement( QStringLiteral(
"mapTip" ) );
2504 mapTipElem.setAttribute( QStringLiteral(
"enabled" ),
mapTipsEnabled() );
2505 QDomText mapTipText = document.createTextNode(
mapTipTemplate() );
2506 mapTipElem.appendChild( mapTipText );
2507 layer_node.toElement().appendChild( mapTipElem );
2513 writeRasterAttributeTableExternalPaths( layer_node, document, context );
2521 QDomElement pipeElement = document.createElement( QStringLiteral(
"pipe" ) );
2523 for (
int i = 0; i < mPipe->size(); i++ )
2526 if ( !interface )
continue;
2527 interface->writeXml( document, pipeElement );
2530 QDomElement elemDataDefinedProperties = document.createElement( QStringLiteral(
"pipe-data-defined-properties" ) );
2532 layer_node.appendChild( elemDataDefinedProperties );
2534 QDomElement resamplingStageElement = document.createElement( QStringLiteral(
"resamplingStage" ) );
2536 resamplingStageElement.appendChild( resamplingStageText );
2537 pipeElement.appendChild( resamplingStageElement );
2539 layer_node.appendChild( pipeElement );
2541 if ( !
isValid() && !mOriginalStyleElement.isNull() )
2543 QDomElement originalStyleElement = document.createElement( QStringLiteral(
"originalStyle" ) );
2544 originalStyleElement.appendChild( mOriginalStyleElement );
2545 layer_node.appendChild( originalStyleElement );
2549 QDomElement blendModeElement = document.createElement( QStringLiteral(
"blendMode" ) );
2551 blendModeElement.appendChild( blendModeText );
2552 layer_node.appendChild( blendModeElement );
2563 return writeSymbology( node, doc, errorMessage, context, categories );
2567 QDomDocument &document,
2572 if ( !mDataProvider )
2577 QDomElement mapLayerNode = layer_node.toElement();
2579 if ( mapLayerNode.isNull() ||
"maplayer" != mapLayerNode.nodeName() )
2589 QDomElement provider = document.createElement( QStringLiteral(
"provider" ) );
2590 const QDomText providerText = document.createTextNode(
mProviderKey );
2591 provider.appendChild( providerText );
2592 layer_node.appendChild( provider );
2595 QDomElement noData = document.createElement( QStringLiteral(
"noData" ) );
2597 for (
int bandNo = 1; bandNo <= mDataProvider->
bandCount(); bandNo++ )
2599 QDomElement noDataRangeList = document.createElement( QStringLiteral(
"noDataList" ) );
2600 noDataRangeList.setAttribute( QStringLiteral(
"bandNo" ), bandNo );
2601 noDataRangeList.setAttribute( QStringLiteral(
"useSrcNoData" ), mDataProvider->
useSourceNoDataValue( bandNo ) );
2603 const auto constUserNoDataValues = mDataProvider->
userNoDataValues( bandNo );
2606 QDomElement noDataRange = document.createElement( QStringLiteral(
"noDataRange" ) );
2610 noDataRangeList.appendChild( noDataRange );
2613 noData.appendChild( noDataRangeList );
2616 if ( noData.hasChildNodes() )
2618 layer_node.appendChild( noData );
2622 writeRasterAttributeTableExternalPaths( layer_node, document, context );
2630 return writeSymbology( layer_node, document, errorMsg, context );
2652 if ( !mDataProvider )
return 0;
2653 return mDataProvider->
xSize();
2660 if ( !mDataProvider )
return 0;
2661 return mDataProvider->
ySize();
2668 mPipe->setResamplingStage( stage );
2675 return mPipe->resamplingStage();
2678bool QgsRasterLayer::update()
2687 closeDataProvider();
The Qgis class provides global constants for use throughout the application.
static QString version()
Version string.
@ IsBasemapLayer
Layer is considered a 'basemap' layer, and certain properties of the layer should be ignored when cal...
RasterResamplingStage
Stage at which raster resampling occurs.
@ Provider
Resampling occurs in Provider.
@ ResampleFilter
Resampling occurs in ResamplingFilter.
@ ProviderHintBenefitsFromResampling
Provider benefits from resampling and should apply user default resampling settings.
@ ProviderHintCanPerformProviderResampling
Provider can perform resampling (to be opposed to post rendering resampling)
@ ReadLayerMetadata
Provider can read layer metadata from data store. Since QGIS 3.0. See QgsDataProvider::layerMetadata(...
@ SingleBandColorData
Single band containing color data.
@ GrayOrUndefined
Gray or undefined.
@ Linear
Interpolates the color between two class breaks linearly.
@ Discrete
Assigns the color of the higher class for every pixel between two class breaks.
@ IsBasemapSource
Associated source should be considered a 'basemap' layer. See Qgis::MapLayerProperty::IsBasemapLayer.
RasterDrawingStyle
Raster drawing styles.
@ SingleBandGray
A single band image drawn as a range of gray colors.
@ SingleBandColorData
ARGB values rendered directly.
@ MultiBandColor
A layer containing 2 or more bands, mapped to RGB color space. In the case of a multiband with only t...
@ PalettedColor
A "Palette" image drawn using color table.
@ SingleBandPseudoColor
A single band image drawn using a pseudocolor algorithm.
QFlags< RasterInterfaceCapability > RasterInterfaceCapabilities
Raster interface capabilities.
BlendMode
Blending modes defining the available composition modes that can be used when painting.
@ Size
Original data source size (and thus resolution) is known, it is not always available,...
@ IdentifyValue
Numerical values.
@ IdentifyFeature
WMS GML -> feature.
QFlags< DataProviderReadFlag > DataProviderReadFlags
Flags which control data provider construction.
@ StdDev
Standard deviation.
@ NoStatistic
No statistic.
DataType
Raster data types.
@ Float32
Thirty two bit floating point (float)
@ CFloat64
Complex Float64.
@ Int16
Sixteen bit signed integer (qint16)
@ ARGB32_Premultiplied
Color, alpha, red, green, blue, 4 bytes the same as QImage::Format_ARGB32_Premultiplied.
@ Int8
Eight bit signed integer (qint8) (added in QGIS 3.30)
@ UInt16
Sixteen bit unsigned integer (quint16)
@ Byte
Eight bit unsigned integer (quint8)
@ UnknownDataType
Unknown or unspecified type.
@ ARGB32
Color, alpha, red, green, blue, 4 bytes the same as QImage::Format_ARGB32.
@ Int32
Thirty two bit signed integer (qint32)
@ Float64
Sixty four bit floating point (double)
@ CFloat32
Complex Float32.
@ UInt32
Thirty two bit unsigned integer (quint32)
QFlags< MapLayerProperty > MapLayerProperties
Map layer properties.
@ LoadDefaultStyle
Reset the layer's style to the default for the datasource.
@ SkipGetExtent
Skip the extent from provider.
@ TrustDataSource
Trust datasource config (primary key unicity, geometry type and srid, etc). Improves provider load ti...
RasterColorInterpretation
Raster color interpretation.
@ AlphaBand
Alpha (0=transparent, 255=opaque)
@ PaletteIndex
Paletted (see associated color table)
@ ContinuousPalette
Continuous palette, QGIS addition, GRASS.
RasterIdentifyFormat
Raster identify formats.
@ Feature
WMS GML/JSON -> feature.
@ Value
Numerical pixel value.
@ Preferred
Preferred format, matching the most recent WKT ISO standard. Currently an alias to WKT2_2019,...
Abstract base class for objects which generate elevation profiles.
static QgsRasterRendererRegistry * rasterRendererRegistry()
Returns the application's raster renderer registry, used for managing raster layer renderers.
static QgsRuntimeProfiler * profiler()
Returns the application runtime profiler.
Bilinear Raster Resampler.
Brightness/contrast and gamma correction filter pipe for rasters.
int contrast() const
Returns current contrast level.
int brightness() const
Returns current brightness level.
void readXml(const QDomElement &filterElem) override
Sets base class members from xml. Usually called from create() methods of subclasses.
A ramp shader will color a raster pixel based on a list of values ranges in a ramp.
bool shade(double value, int *returnRedValue, int *returnGreenValue, int *returnBlueValue, int *returnAlphaValue) const override
Generates an new RGBA value based on one input value.
void classifyColorRamp(int classes=0, int band=-1, const QgsRectangle &extent=QgsRectangle(), QgsRasterInterface *input=nullptr)
Classify color ramp shader.
void setColorRampType(Qgis::ShaderInterpolationMethod colorRampType)
Sets the color ramp interpolation method.
void setColorRampItemList(const QList< QgsColorRampShader::ColorRampItem > &list)
Sets a custom color map.
Manipulates raster or point cloud pixel values so that they enhanceContrast or clip into a specified ...
ContrastEnhancementAlgorithm
This enumerator describes the types of contrast enhancement algorithms that can be used.
@ StretchToMinimumMaximum
Linear histogram.
@ NoEnhancement
Default color scaling algorithm, no scaling is applied.
static QString contrastEnhancementAlgorithmString(ContrastEnhancementAlgorithm algorithm)
Returns a string to serialize ContrastEnhancementAlgorithm.
static ContrastEnhancementAlgorithm contrastEnhancementAlgorithmFromString(const QString &contrastEnhancementString)
Deserialize ContrastEnhancementAlgorithm.
ContrastEnhancementAlgorithm contrastEnhancementAlgorithm() const
This class represents a coordinate reference system (CRS).
Contains information about the context in which a coordinate transform is executed.
Abstract base class for spatial data provider implementations.
virtual QString subsetString() const
Returns the subset definition string currently in use by the layer and used by the provider to limit ...
virtual void setLayerOrder(const QStringList &layers)
Reorder the list of layer names to be rendered by this provider (in order from bottom to top)
QgsCoordinateTransformContext transformContext() const
Returns data provider coordinate transform context.
virtual Qgis::DataProviderFlags flags() const
Returns the generic data provider flags.
virtual bool supportsSubsetString() const
Returns true if the provider supports setting of subset strings.
virtual QgsCoordinateReferenceSystem crs() const =0
Returns the coordinate system for the data source.
virtual QgsLayerMetadata layerMetadata() const
Returns layer metadata collected from the provider's source.
virtual bool isValid() const =0
Returns true if this is a valid layer.
virtual void setDataSourceUri(const QString &uri)
Set the data source specification.
virtual QgsError error() const
Gets current status error.
virtual bool setSubsetString(const QString &subset, bool updateFeatureCount=true)
Set the subset string used to create a subset of features in the layer.
virtual QString dataSourceUri(bool expandAuthConfig=false) const
Gets the data source specification.
virtual QString htmlMetadata() const
Obtain a formatted HTML string containing assorted metadata for this data provider.
virtual void reloadData()
Reloads the data from the source for providers with data caches to synchronize, changes in the data s...
virtual void setSubLayerVisibility(const QString &name, bool vis)
Set the visibility of the given sublayer name.
virtual void setTransformContext(const QgsCoordinateTransformContext &transformContext)
Sets data coordinate transform context to transformContext.
Class for storing the component parts of a RDBMS data source URI (e.g.
QByteArray encodedUri() const
Returns the complete encoded URI as a byte array.
void setEncodedUri(const QByteArray &uri)
Sets the complete encoded uri.
void setParam(const QString &key, const QString &value)
Sets a generic parameter value on the URI.
Color and saturation filter pipe for rasters.
bool invertColors() const
Returns true if the filter inverts colors.
void readXml(const QDomElement &filterElem) override
Sets base class members from xml. Usually called from create() methods of subclasses.
Base class for storage of map layer elevation properties.
void setDataDefinedProperties(const QgsPropertyCollection &collection)
Sets the object's property collection, used for data defined overrides.
static QString typeToString(Qgis::LayerType type)
Converts a map layer type to a string value.
static QgsMapLayerLegend * defaultRasterLegend(QgsRasterLayer *rl)
Create new legend implementation for raster layer.
Base class for utility classes that encapsulate information necessary for rendering of map layers.
QString title() const
Returns the title of the layer used by QGIS Server in GetCapabilities request.
void writeXml(QDomNode &layer_node, QDomDocument &document) const
Saves server properties to xml under the layer node.
QString abstract() const
Returns the abstract of the layerused by QGIS Server in GetCapabilities request.
Base class for storage of map layer temporal properties.
Base class for all map layer types.
void readStyleManager(const QDomNode &layerNode)
Read style manager's configuration (if any). To be called by subclasses.
void setError(const QgsError &error)
Sets error message.
void writeStyleManager(QDomNode &layerNode, QDomDocument &doc) const
Write style manager's configuration (if exists). To be called by subclasses.
virtual QgsRectangle extent() const
Returns the extent of the layer.
QString source() const
Returns the source for the layer.
Q_INVOKABLE QVariant customProperty(const QString &value, const QVariant &defaultValue=QVariant()) const
Read a custom property from layer.
void setBlendMode(QPainter::CompositionMode blendMode)
Set the blending mode used for rendering a layer.
void configChanged()
Emitted whenever the configuration is changed.
static Qgis::DataProviderReadFlags providerReadFlags(const QDomNode &layerNode, QgsMapLayer::ReadFlags layerReadFlags)
Returns provider read flag deduced from layer read flags layerReadFlags and a dom node layerNode that...
QgsMapLayer::LayerFlags flags() const
Returns the flags for this layer.
QgsCoordinateReferenceSystem crs
QgsMapLayerServerProperties * serverProperties()
Returns QGIS Server Properties for the map layer.
virtual QString loadDefaultStyle(bool &resultFlag)
Retrieve the default style for this layer if one exists (either as a .qml file on disk or as a record...
void setDataSource(const QString &dataSource, const QString &baseName=QString(), const QString &provider=QString(), bool loadDefaultStyleFlag=false)
Updates the data source of the layer.
QString mLayerName
Name of the layer - used for display.
QString crsHtmlMetadata() const
Returns a HTML fragment containing the layer's CRS metadata, for use in the htmlMetadata() method.
QgsLayerMetadata metadata
Q_DECL_DEPRECATED QString abstract() const
Returns the abstract of the layer used by QGIS Server in GetCapabilities request.
QPainter::CompositionMode blendMode() const
Returns the current blending mode for a layer.
void statusChanged(const QString &status)
Emit a signal with status (e.g. to be caught by QgisApp and display a msg on status bar)
virtual void setMetadata(const QgsLayerMetadata &metadata)
Sets the layer's metadata store.
QFlags< StyleCategory > StyleCategories
Q_INVOKABLE void setCustomProperty(const QString &key, const QVariant &value)
Set a custom property for layer.
QString mProviderKey
Data provider key (name of the data provider)
QgsCoordinateTransformContext transformContext() const
Returns the layer data provider coordinate transform context or a default transform context if the la...
std::unique_ptr< QgsDataProvider > mPreloadedProvider
Optionally used when loading a project, it is released when the layer is effectively created.
void rendererChanged()
Signal emitted when renderer is changed.
Q_DECL_DEPRECATED QString title() const
Returns the title of the layer used by QGIS Server in GetCapabilities request.
virtual QgsError error() const
Gets current status error.
bool hasScaleBasedVisibility() const
Returns whether scale based visibility is enabled for the layer.
void opacityChanged(double opacity)
Emitted when the layer's opacity is changed, where opacity is a value between 0 (transparent) and 1 (...
void emitStyleChanged()
Triggers an emission of the styleChanged() signal.
void dataChanged()
Data of layer changed.
void willBeDeleted()
Emitted in the destructor when the layer is about to be deleted, but it is still in a perfectly valid...
virtual QgsMapLayer * clone() const =0
Returns a new instance equivalent to this one except for the id which is still unique.
void setName(const QString &name)
Set the display name of the layer.
virtual void setExtent(const QgsRectangle &rect)
Sets the extent.
void appendError(const QgsErrorMessage &error)
Add error message.
QString mDataSource
Data source description string, varies by layer type.
void setMapTipsEnabled(bool enabled)
Enable or disable map tips for this layer.
@ FlagReadExtentFromXml
Read extent from xml and skip get extent from provider.
@ FlagTrustLayerMetadata
Trust layer metadata. Improves layer load time by skipping expensive checks like primary key unicity,...
@ FlagDontResolveLayers
Don't resolve layer paths or create data providers for layers.
void setValid(bool valid)
Sets whether layer is valid or not.
void readCommonStyle(const QDomElement &layerElement, const QgsReadWriteContext &context, StyleCategories categories=AllStyleCategories)
Read style data common to all layer types.
QgsMapLayer::ReadFlags mReadFlags
Read flags. It's up to the subclass to respect these when restoring state from XML.
double minimumScale() const
Returns the minimum map scale (i.e.
void repaintRequested(bool deferredUpdate=false)
By emitting this signal the layer tells that either appearance or content have been changed and any v...
void setMapTipTemplate(const QString &mapTipTemplate)
The mapTip is a pretty, html representation for feature information.
@ AttributeTable
Attribute table settings: choice and order of columns, conditional styling.
@ Rendering
Rendering: scale visibility, simplify method, opacity.
void setProviderType(const QString &providerType)
Sets the providerType (provider key)
QString customPropertyHtmlMetadata() const
Returns an HTML fragment containing custom property information, for use in the htmlMetadata() method...
QString generalHtmlMetadata() const
Returns an HTML fragment containing general metadata information, for use in the htmlMetadata() metho...
void writeCommonStyle(QDomElement &layerElement, QDomDocument &document, const QgsReadWriteContext &context, StyleCategories categories=AllStyleCategories) const
Write style data common to all layer types.
double maximumScale() const
Returns the maximum map scale (i.e.
void invalidateWgs84Extent()
Invalidates the WGS84 extent.
bool mShouldValidateCrs
true if the layer's CRS should be validated and invalid CRSes are not permitted.
void setCrs(const QgsCoordinateReferenceSystem &srs, bool emitSignal=true)
Sets layer's spatial reference system.
Perform transforms between map coordinates and device coordinates.
static void logMessage(const QString &message, const QString &tag=QString(), Qgis::MessageLevel level=Qgis::MessageLevel::Warning, bool notifyUser=true)
Adds a message to the log instance (and creates it if necessary).
Renderer for multiband images with the color components.
const QgsContrastEnhancement * greenContrastEnhancement() const
Returns the contrast enhancement to use for the green channel.
const QgsContrastEnhancement * blueContrastEnhancement() const
Returns the contrast enhancement to use for the blue channel.
void setGreenContrastEnhancement(QgsContrastEnhancement *ce)
Sets the contrast enhancement to use for the green channel.
void setBlueContrastEnhancement(QgsContrastEnhancement *ce)
Sets the contrast enhancement to use for the blue channel.
void setRedContrastEnhancement(QgsContrastEnhancement *ce)
Sets the contrast enhancement to use for the red channel.
const QgsContrastEnhancement * redContrastEnhancement() const
Returns the contrast enhancement to use for the red channel.
static Qgis::BlendMode getBlendModeEnum(QPainter::CompositionMode blendMode)
Returns a Qgis::BlendMode corresponding to a QPainter::CompositionMode.
static QPainter::CompositionMode getCompositionMode(Qgis::BlendMode blendMode)
Returns a QPainter::CompositionMode corresponding to a Qgis::BlendMode.
QString writePath(const QString &filename) const
Prepare a filename to save it to the project file.
QString readPath(const QString &filename) const
Turn filename read from the project file to an absolute path.
A class to represent a 2D point.
Encapsulates properties and constraints relating to fetching elevation profiles from different source...
QString absoluteToRelativeUri(const QString &providerKey, const QString &uri, const QgsReadWriteContext &context) const
Converts absolute path(s) to relative path(s) in the given provider-specific URI.
static QgsProviderRegistry * instance(const QString &pluginPath=QString())
Means of accessing canonical single instance.
QString relativeToAbsoluteUri(const QString &providerKey, const QString &uri, const QgsReadWriteContext &context) const
Converts relative path(s) to absolute path(s) in the given provider-specific URI.
The QgsRasterAttributeTable class represents a Raster Attribute Table (RAT).
QString filePath() const
Returns the (possibly empty) path of the file-based RAT, the path is set when a RAT is read or writte...
The RasterBandStats struct is a container for statistics about a single raster band.
double mean
The mean cell value for the band. NO_DATA values are excluded.
double stdDev
The standard deviation of the cell values.
double minimumValue
The minimum cell value in the raster band.
Qgis::RasterBandStatistics statsGathered
Collected statistics.
double maximumValue
The maximum cell value in the raster band.
static int typeSize(Qgis::DataType dataType)
Returns the size in bytes for the specified dataType.
static QString printValue(double value, bool localized=false)
Print double value with all necessary significant digits.
Handles elevation related properties for a raster data provider.
Base class for raster data providers.
virtual bool useSourceNoDataValue(int bandNo) const
Returns the source nodata value usage.
Qgis::DataType sourceDataType(int bandNo) const override=0
Returns source data type for the band specified by number, source data type may be shorter than dataT...
virtual void setUseSourceNoDataValue(int bandNo, bool use)
Sets the source nodata value usage.
QgsRasterAttributeTable * attributeTable(int bandNumber) const
Returns the (possibly nullptr) attribute table for the specified bandNumber.
void setAttributeTable(int bandNumber, QgsRasterAttributeTable *attributeTable)
Set the attribute table to attributeTable for the specified bandNumber, if the attributeTable is null...
void readXml(const QDomElement &filterElem) override
Sets base class members from xml. Usually called from create() methods of subclasses.
ResamplingMethod zoomedOutResamplingMethod() const
Returns resampling method for zoomed-out operations.
virtual bool readNativeAttributeTable(QString *errorMessage=nullptr)
Reads the native attribute table, optionally reporting any error in errorMessage, returns true on suc...
QDateTime timestamp() const override
Time stamp of data source in the moment when data/metadata were loaded by provider.
QgsRectangle extent() const override=0
Returns the extent of the layer.
virtual bool ignoreExtents() const
Returns true if the extents reported by the data provider are not reliable and it's possible that the...
virtual bool setMaxOversampling(double factor)
Sets maximum oversampling factor for zoomed-out operations.
Qgis::DataType dataType(int bandNo) const override=0
Returns data type for the band specified by number.
QgsRasterDataProviderElevationProperties * elevationProperties() override
Returns the provider's elevation properties.
QStringList subLayers() const override
Returns the sublayers of this layer - useful for providers that manage their own layers,...
virtual Qgis::RasterColorInterpretation colorInterpretation(int bandNo) const
Returns data type for the band specified by number.
QDateTime dataTimestamp() const override
Current time stamp of data source.
virtual QList< QgsColorRampShader::ColorRampItem > colorTable(int bandNo) const
virtual Qgis::RasterProviderCapabilities providerCapabilities() const
Returns flags containing the supported capabilities of the data provider.
void statusChanged(const QString &) const
Emit a message to be displayed on status bar, usually used by network providers (WMS,...
virtual QgsRasterRangeList userNoDataValues(int bandNo) const
Returns a list of user no data value ranges.
virtual bool setZoomedInResamplingMethod(ResamplingMethod method)
Set resampling method to apply for zoomed-in operations.
ResamplingMethod zoomedInResamplingMethod() const
Returns resampling method for zoomed-in operations.
static QString identifyFormatName(Qgis::RasterIdentifyFormat format)
Converts a raster identify format to a string name.
QgsRasterDataProviderTemporalCapabilities * temporalCapabilities() override
Returns the provider's temporal capabilities.
@ Bilinear
Bilinear (2x2 kernel) resampling.
@ Cubic
Cubic Convolution Approximation (4x4 kernel) resampling.
virtual void setUserNoDataValue(int bandNo, const QgsRasterRangeList &noData)
virtual bool setZoomedOutResamplingMethod(ResamplingMethod method)
Set resampling method to apply for zoomed-out operations.
The drawing pipe for raster layers.
void draw(QPainter *p, QgsRasterViewPort *viewPort, const QgsMapToPixel *qgsMapToPixel, QgsRasterBlockFeedback *feedback=nullptr)
Draws raster data.
Base class for processing filters like renderers, reprojector, resampler etc.
virtual void cumulativeCut(int bandNo, double lowerCount, double upperCount, double &lowerValue, double &upperValue, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0)
Find values for cumulative pixel count cut.
virtual Qgis::RasterInterfaceCapabilities capabilities() const
Returns the capabilities supported by the interface.
virtual int xSize() const
Gets raster size.
virtual QString generateBandName(int bandNumber) const
helper function to create zero padded band names
Q_DECL_DEPRECATED QgsRasterBandStats bandStatistics(int bandNo, int stats, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0, QgsRasterBlockFeedback *feedback=nullptr)
Returns the band statistics.
virtual int bandCount() const =0
Gets number of bands.
Q_DECL_DEPRECATED bool hasStatistics(int bandNo, int stats, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0)
Returns true if histogram is available (cached, already calculated).
virtual int ySize() const
virtual QgsRasterInterface * input() const
Current input.
Iterator for sequentially processing raster cells.
Raster layer specific subclass of QgsMapLayerElevationProperties.
bool isEnabled() const
Returns true if the elevation properties are enabled, i.e.
QgsRasterLayerElevationProperties * clone() const override
Creates a clone of the properties.
void setEnabled(bool enabled)
Sets whether the elevation properties are enabled, i.e.
Implementation of QgsAbstractProfileGenerator for raster layers.
Implementation of threaded rendering for raster layers.
Implementation of map layer temporal properties for raster layers.
void setDefaultsFromDataProviderTemporalCapabilities(const QgsDataProviderTemporalCapabilities *capabilities) override
Sets the layers temporal settings to appropriate defaults based on a provider's temporal capabilities...
Represents a raster layer.
QString htmlMetadata() const override
Obtain a formatted HTML string containing assorted metadata for this layer.
bool defaultContrastEnhancementSettings(QgsContrastEnhancement::ContrastEnhancementAlgorithm &myAlgorithm, QgsRasterMinMaxOrigin::Limits &myLimits) const
Returns default contrast enhancement settings for that type of raster.
bool canCreateRasterAttributeTable()
Returns true if the raster renderer is suitable for creation of a raster attribute table.
void subsetStringChanged()
Emitted when the layer's subset string has changed.
Qgis::MapLayerProperties properties() const override
Returns the map layer properties of this layer.
QString encodedSource(const QString &source, const QgsReadWriteContext &context) const override
Called by writeLayerXML(), used by derived classes to encode provider's specific data source to proje...
Q_DECL_DEPRECATED QgsLegendColorList legendSymbologyItems() const
Returns a list with classification items (Text and color).
QgsMapLayerRenderer * createMapRenderer(QgsRenderContext &rendererContext) override
Returns new instance of QgsMapLayerRenderer that will be used for rendering of given context.
void showStatusMessage(const QString &message)
QgsRasterAttributeTable * attributeTable(int bandNumber) const
Returns the (possibly NULL) raster attribute table for the given band bandNumber.
virtual bool setSubsetString(const QString &subset)
Sets the string (typically sql) used to define a subset of the layer.
QgsRasterResampleFilter * resampleFilter() const
Returns the raster's resample filter.
bool writeSymbology(QDomNode &, QDomDocument &doc, QString &errorMessage, const QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories=QgsMapLayer::AllStyleCategories) const override
Write the style for the layer into the document provided.
QgsRasterLayer * clone() const override
Returns a new instance equivalent to this one.
void setResamplingStage(Qgis::RasterResamplingStage stage)
Select which stage of the pipe should apply resampling.
Qgis::RasterResamplingStage resamplingStage() const
Returns which stage of the pipe should apply resampling.
static const QgsSettingsEntryBool * settingsRasterDefaultEarlyResampling
void setContrastEnhancement(QgsContrastEnhancement::ContrastEnhancementAlgorithm algorithm, QgsRasterMinMaxOrigin::Limits limits=QgsRasterMinMaxOrigin::MinMax, const QgsRectangle &extent=QgsRectangle(), int sampleSize=QgsRasterLayer::SAMPLE_SIZE, bool generateLookupTableFlag=true)
Set contrast enhancement algorithm.
int attributeTableCount() const
Returns the number of attribute tables for the raster by counting the number of bands that have an as...
void refreshContrastEnhancement(const QgsRectangle &extent)
Refresh contrast enhancement with new extent.
int height() const
Returns the height of the (unclipped) raster.
void setOpacity(double opacity) FINAL
Sets the opacity for the layer, where opacity is a value between 0 (totally transparent) and 1....
Q_DECL_DEPRECATED void setDataProvider(const QString &provider)
Set the data provider.
static const QgsContrastEnhancement::ContrastEnhancementAlgorithm MULTIPLE_BAND_SINGLE_BYTE_ENHANCEMENT_ALGORITHM
Default enhancement algorithm for multiple band raster of type Byte.
int bandCount() const
Returns the number of bands in this layer.
void refreshRendererIfNeeded(QgsRasterRenderer *rasterRenderer, const QgsRectangle &extent)
Refresh renderer with new extent, if needed.
QgsMapLayerTemporalProperties * temporalProperties() override
Returns the layer's temporal properties.
bool ignoreExtents() const
If the ignoreExtent flag is set, the layer will also render outside the bounding box reported by the ...
QString decodedSource(const QString &source, const QString &provider, const QgsReadWriteContext &context) const override
Called by readLayerXML(), used by derived classes to decode provider's specific data source from proj...
void setSubLayerVisibility(const QString &name, bool vis) override
Set the visibility of the given sublayer name.
static const QgsSettingsEntryDouble * settingsRasterDefaultOversampling
virtual QString subsetString() const
Returns the string (typically sql) used to define a subset of the layer.
static const QgsRasterMinMaxOrigin::Limits SINGLE_BAND_MIN_MAX_LIMITS
Default enhancement limits for single band raster.
QgsAbstractProfileGenerator * createProfileGenerator(const QgsProfileRequest &request) override
Given a profile request, returns a new profile generator ready for generating elevation profiles.
QgsBrightnessContrastFilter * brightnessFilter() const
Returns the raster's brightness/contrast filter.
static const QgsRasterMinMaxOrigin::Limits MULTIPLE_BAND_MULTI_BYTE_MIN_MAX_LIMITS
Default enhancement limits for multiple band raster of type different from Byte.
bool writeXml(QDomNode &layer_node, QDomDocument &doc, const QgsReadWriteContext &context) const override
Called by writeLayerXML(), used by children to write state specific to them to project files.
bool writeStyle(QDomNode &node, QDomDocument &doc, QString &errorMessage, const QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories=QgsMapLayer::AllStyleCategories) const override
Write just the symbology information for the layer into the document.
double opacity() const FINAL
Returns the opacity for the layer, where opacity is a value between 0 (totally transparent) and 1....
double rasterUnitsPerPixelX() const
Returns the number of raster units per each raster pixel in X axis.
void reload() override
Synchronises with changes in the datasource.
bool accept(QgsStyleEntityVisitorInterface *visitor) const override
Accepts the specified symbology visitor, causing it to visit all symbols associated with the layer.
QImage previewAsImage(QSize size, const QColor &bgColor=Qt::white, QImage::Format format=QImage::Format_ARGB32_Premultiplied)
Draws a preview of the rasterlayer into a QImage.
QStringList subLayers() const override
Returns the sublayers of this layer.
void setDefaultContrastEnhancement()
Sets the default contrast enhancement.
QgsRasterRenderer * renderer() const
Returns the raster's renderer.
static const double SAMPLE_SIZE
Default sample size (number of pixels) for estimated statistics/histogram calculation.
static const QgsRasterMinMaxOrigin::Limits MULTIPLE_BAND_SINGLE_BYTE_MIN_MAX_LIMITS
Default enhancement limits for multiple band raster of type Byte.
static const QgsContrastEnhancement::ContrastEnhancementAlgorithm MULTIPLE_BAND_MULTI_BYTE_ENHANCEMENT_ALGORITHM
Default enhancement algorithm for multiple band raster of type different from Byte.
bool readXml(const QDomNode &layer_node, QgsReadWriteContext &context) override
Called by readLayerXML(), used by children to read state specific to them from project files.
QString bandName(int bandNoInt) const
Returns the name of a band given its number.
QgsRasterDataProvider * dataProvider() override
Returns the source data provider.
static bool isValidRasterFileName(const QString &fileNameQString, QString &retError)
This helper checks to see whether the file name appears to be a valid raster file name.
bool isSpatial() const override
Returns true if the layer is considered a spatial layer, ie it has some form of geometry associated w...
double rasterUnitsPerPixelY() const
Returns the number of raster units per each raster pixel in Y axis.
QString providerType() const
[ data provider interface ] Which provider is being used for this Raster Layer?
int width() const
Returns the width of the (unclipped) raster.
QgsMapLayerElevationProperties * elevationProperties() override
Returns the layer's elevation properties.
bool readSymbology(const QDomNode &node, QString &errorMessage, QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories=QgsMapLayer::AllStyleCategories) override
Read the symbology for the current layer from the DOM node supplied.
void draw(QPainter *theQPainter, QgsRasterViewPort *myRasterViewPort, const QgsMapToPixel *qgsMapToPixel=nullptr)
This is an overloaded version of the draw() function that is called by both draw() and thumbnailAsPix...
bool writeSld(QDomNode &node, QDomDocument &doc, QString &errorMessage, const QVariantMap &props=QVariantMap()) const
Writes the symbology of the layer into the document provided in SLD 1.0.0 format.
static QDateTime lastModified(const QString &name)
Returns time stamp for given file name.
static const QgsContrastEnhancement::ContrastEnhancementAlgorithm SINGLE_BAND_ENHANCEMENT_ALGORITHM
Default enhancement algorithm for single band raster.
~QgsRasterLayer() override
QDateTime timestamp() const override
Time stamp of data source in the moment when data/metadata were loaded by provider.
virtual void setTransformContext(const QgsCoordinateTransformContext &transformContext) override
Sets the coordinate transform context to transformContext.
void setRenderer(QgsRasterRenderer *renderer)
Sets the raster's renderer.
QgsRasterLayer()
Constructor. Provider is not set.
void setLayerOrder(const QStringList &layers) override
Reorders the previously selected sublayers of this layer from bottom to top.
QgsHueSaturationFilter * hueSaturationFilter() const
Returns the raster's hue/saturation filter.
bool readStyle(const QDomNode &node, QString &errorMessage, QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories=QgsMapLayer::AllStyleCategories) override
Read the style for the current layer from the DOM node supplied.
QPixmap paletteAsPixmap(int bandNumber=1)
Returns a 100x100 pixmap of the color palette.
This class describes the origin of min/max values.
void setExtent(QgsRasterMinMaxOrigin::Extent extent)
Sets the extent.
static QString limitsString(Limits limits)
Returns a string to serialize Limits.
double cumulativeCutLower() const
Returns the lower bound of cumulative cut method (between 0 and 1).
QgsRasterMinMaxOrigin::Limits limits() const
Returns the raster limits.
double stdDevFactor() const
Returns the factor f so that the min/max range is [ mean - f * stddev , mean + f * stddev ].
void setLimits(QgsRasterMinMaxOrigin::Limits limits)
Sets the limits.
@ UpdatedCanvas
Constantly updated extent of the canvas is used to compute statistics.
@ CurrentCanvas
Current extent of the canvas (at the time of computation) is used to compute statistics.
@ WholeRaster
Whole raster is used to compute statistics.
double cumulativeCutUpper() const
Returns the upper bound of cumulative cut method (between 0 and 1).
Limits
This enumerator describes the limits used to compute min/max values.
@ StdDev
Range is [ mean - stdDevFactor() * stddev, mean + stdDevFactor() * stddev ].
@ MinMax
Real min-max values.
@ CumulativeCut
Range is [ min + cumulativeCutLower() * (max - min), min + cumulativeCutUpper() * (max - min) ].
static Limits limitsFromString(const QString &limits)
Deserialize Limits.
QgsRasterMinMaxOrigin::Extent extent() const
Returns the raster extent.
Contains a pipeline of raster interfaces for sequential raster processing.
static QgsPropertiesDefinition propertyDefinitions()
Returns the definitions for data defined properties available for use in raster pipes.
Implements approximate projection support for optimised raster transformation.
Q_DECL_DEPRECATED void setCrs(const QgsCoordinateReferenceSystem &srcCRS, const QgsCoordinateReferenceSystem &destCRS, int srcDatumTransform=-1, int destDatumTransform=-1)
Sets the source and destination CRS.
Raster values range container.
double min() const
Returns the minimum value for the range.
Raster renderer pipe that applies colors to a raster.
virtual QString type() const
Returns a unique string representation of the renderer type.
virtual bool canCreateRasterAttributeTable() const
Returns true if the renderer is suitable for attribute table creation.
void setMinMaxOrigin(const QgsRasterMinMaxOrigin &origin)
Sets origin of min/max values.
const QgsRasterMinMaxOrigin & minMaxOrigin() const
Returns const reference to origin of min/max values.
virtual QList< QPair< QString, QColor > > legendSymbologyItems() const
Returns symbology items if provided by renderer.
Resample filter pipe for rasters.
void setZoomedOutResampler(QgsRasterResampler *r)
Sets resampler for zoomed out scales. Takes ownership of the object.
void setMaxOversampling(double os)
void readXml(const QDomElement &filterElem) override
Sets base class members from xml. Usually called from create() methods of subclasses.
void setZoomedInResampler(QgsRasterResampler *r)
Sets resampler for zoomed in scales. Takes ownership of the object.
Interface for all raster shaders.
void setRasterShaderFunction(QgsRasterShaderFunction *function)
A public method that allows the user to set their own shader function.
QgsRasterShaderFunction * rasterShaderFunction()
The class is used as a container of context for various read/write operations on other objects.
QgsCoordinateTransformContext transformContext() const
Returns data provider coordinate transform context.
const QgsPathResolver & pathResolver() const
Returns path resolver for conversion between relative and absolute paths.
A rectangle specified with double values.
QString toString(int precision=16) const
Returns a string representation of form xmin,ymin : xmax,ymax Coordinates will be truncated to the sp...
double width() const
Returns the width of the rectangle.
bool isEmpty() const
Returns true if the rectangle has no area.
double height() const
Returns the height of the rectangle.
Contains information about the context of a rendering operation.
T value(const QString &dynamicKeyPart=QString()) const
Returns settings value.
A boolean settings entry.
static QgsSettingsTreeNode * sTreeRaster
This class is a composition of two QSettings instances:
QVariant value(const QString &key, const QVariant &defaultValue=QVariant(), Section section=NoSection) const
Returns the value for setting key.
Raster renderer pipe for single band gray.
const QgsContrastEnhancement * contrastEnhancement() const
void setContrastEnhancement(QgsContrastEnhancement *ce)
Takes ownership.
int inputBand() const override
Returns the input band for the renderer, or -1 if no input band is available.
Raster renderer pipe for single band pseudocolor.
void setClassificationMin(double min)
void setShader(QgsRasterShader *shader)
Takes ownership of the shader.
void setClassificationMax(double max)
QgsRasterShader * shader()
Returns the raster shader.
int inputBand() const override
Returns the input band for the renderer, or -1 if no input band is available.
An interface for classes which can visit style entity (e.g.
static void mergeScaleDependencies(double mScaleMinDenom, double mScaleMaxDenom, QVariantMap &props)
Merges the local scale limits, if any, with the ones already in the map, if any.
static QgsRectangle readRectangle(const QDomElement &element)
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into allowing algorithms to be written in pure substantial changes are required in order to port existing x Processing algorithms for QGIS x The most significant changes are outlined not GeoAlgorithm For algorithms which operate on features one by consider subclassing the QgsProcessingFeatureBasedAlgorithm class This class allows much of the boilerplate code for looping over features from a vector layer to be bypassed and instead requires implementation of a processFeature method Ensure that your algorithm(or algorithm 's parent class) implements the new pure virtual createInstance(self) call
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into c
QString qgsEnumValueToKey(const T &value, bool *returnOk=nullptr)
Returns the value for the given key of an enum.
bool qgsDoubleNear(double a, double b, double epsilon=4 *std::numeric_limits< double >::epsilon())
Compare two doubles (but allow some difference)
QgsSignalBlocker< Object > whileBlocking(Object *object)
Temporarily blocks signals from a QObject while calling a single method from the object.
#define QgsDebugMsgLevel(str, level)
#define QgsDebugError(str)
QgsDataProvider * classFactoryFunction_t(const QString *, const QgsDataProvider::ProviderOptions &options)
QList< QPair< QString, QColor > > QgsLegendColorList
QList< QgsRasterRange > QgsRasterRangeList
#define QGIS_PROTECT_QOBJECT_THREAD_ACCESS
Setting options for creating vector data providers.
Setting options for loading raster layers.
bool skipCrsValidation
Controls whether the layer is allowed to have an invalid/unknown CRS.
bool loadDefaultStyle
Sets to true if the default layer style should be loaded.
QgsCoordinateTransformContext transformContext
Coordinate transform context.
Registry for raster renderer entries.
QgsRasterRendererCreateFunc rendererCreateFunction
This class provides details of the viewable area that a raster will be rendered into.
qgssize mHeight
Height, number of rows to be rendered.
QgsCoordinateReferenceSystem mDestCRS
Target coordinate system.
QgsPointXY mBottomRightPoint
Coordinate (in output device coordinate system) of bottom right corner of the part of the raster that...
QgsPointXY mTopLeftPoint
Coordinate (in output device coordinate system) of top left corner of the part of the raster that is ...
QgsCoordinateReferenceSystem mSrcCRS
Source coordinate system.
QgsRectangle mDrawnExtent
Intersection of current map extent and layer extent.
QgsCoordinateTransformContext mTransformContext
Coordinate transform context.
qgssize mWidth
Width, number of columns to be rendered.