37#include "moc_qgsrasterlayer.cpp"
52#include "qgsgdalprovider.h"
70#include <QApplication>
78#include <QFontMetrics>
85#include <QRegularExpression>
92#define ERR(message) QGS_ERROR_MESSAGE(message,"Raster layer")
112 , QSTRING_NOT_SET( QStringLiteral(
"Not Set" ) )
113 , TRSTRING_NOT_SET( tr(
"Not Set" ) )
123 const QString &baseName,
124 const QString &providerKey,
128 , QSTRING_NOT_SET( QStringLiteral(
"Not Set" ) )
129 , TRSTRING_NOT_SET( tr(
"Not Set" ) )
146 setDataSource( uri, baseName, providerKey, providerOptions, providerFlags );
172 std::unique_ptr< QgsRasterLayer > layer = std::make_unique< QgsRasterLayer >(
source(),
name(),
mProviderKey, options );
174 layer->mElevationProperties = mElevationProperties->
clone();
175 layer->mElevationProperties->setParent( layer.get() );
180 for (
int i = 1; i < mPipe->size(); i++ )
182 if ( mPipe->at( i ) )
183 layer->pipe()->set( mPipe->at( i )->clone() );
186 layer->setResamplingStage( mPipe->resamplingStage() );
187 if ( mDataProvider && layer->dataProvider() )
193 return layer.release();
200 if ( !mElevationProperties->
isEnabled() )
214 const bool myIsValid = QgsGdalProvider::isValidRasterFileName( fileNameQString, retErrMsg );
229 const QFileInfo fi(
name );
235 t = fi.lastModified();
262 if ( !mDataProvider )
return 0;
270 if ( !mDataProvider )
return QString();
278 if ( !mDataProvider )
287 if ( !mDataProvider )
291 for (
int bandNo = 1; bandNo <=
bandCount(); ++bandNo )
319 return mDataProvider;
326 return mDataProvider;
364 bool restoreOldResamplingStage =
false;
372 if ( mDataProvider &&
377 restoreOldResamplingStage =
true;
386 drawer.
draw( theQPainter, rasterViewPort, qgsMapToPixel );
388 if ( restoreOldResamplingStage )
393 QgsDebugMsgLevel( QStringLiteral(
"total raster draw time (ms): %1" ).arg( time.elapsed(), 5 ), 4 );
408 if ( !mDataProvider )
412 QString myMetadata = QStringLiteral(
"<html><head></head>\n<body>\n" );
417 myMetadata += QStringLiteral(
"<h1>" ) + tr(
"Information from provider" ) + QStringLiteral(
"</h1>\n<hr>\n" ) + QStringLiteral(
"<table class=\"list-view\">\n" );
419 myMetadata += QStringLiteral(
"\n" ) %
421 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Extent" ) % QStringLiteral(
"</td><td>" ) %
extent().
toString() % QStringLiteral(
"</td></tr>\n" ) %
424 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Width" ) % QStringLiteral(
"</td><td>" );
426 myMetadata += QString::number(
width() );
428 myMetadata += tr(
"n/a" );
429 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
432 QStringLiteral(
"<tr><td class=\"highlight\">" ) + tr(
"Height" ) + QStringLiteral(
"</td><td>" );
434 myMetadata += QString::number(
height() );
436 myMetadata += tr(
"n/a" );
437 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
440 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Data type" ) % QStringLiteral(
"</td><td>" );
445 myMetadata += tr(
"Byte - Eight bit unsigned integer" );
448 myMetadata += tr(
"Int8 - Eight bit signed integer" );
451 myMetadata += tr(
"UInt16 - Sixteen bit unsigned integer " );
454 myMetadata += tr(
"Int16 - Sixteen bit signed integer " );
457 myMetadata += tr(
"UInt32 - Thirty two bit unsigned integer " );
460 myMetadata += tr(
"Int32 - Thirty two bit signed integer " );
463 myMetadata += tr(
"Float32 - Thirty two bit floating point " );
466 myMetadata += tr(
"Float64 - Sixty four bit floating point " );
469 myMetadata += tr(
"CInt16 - Complex Int16 " );
472 myMetadata += tr(
"CInt32 - Complex Int32 " );
475 myMetadata += tr(
"CFloat32 - Complex Float32 " );
478 myMetadata += tr(
"CFloat64 - Complex Float64 " );
481 myMetadata += tr(
"Could not determine raster data type." );
483 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
489 QStringLiteral(
"</table>\n<br><br>" );
495 myMetadata += QStringLiteral(
"<h1>" ) % tr(
"Identification" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
497 QStringLiteral(
"<br><br>\n" ) %
500 QStringLiteral(
"<h1>" ) % tr(
"Extent" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
502 QStringLiteral(
"<br><br>\n" ) %
505 QStringLiteral(
"<h1>" ) % tr(
"Access" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
507 QStringLiteral(
"<br><br>\n" ) %
510 QStringLiteral(
"</table>\n<br><br><h1>" ) % tr(
"Bands" ) % QStringLiteral(
"</h1>\n<hr>\n<table class=\"list-view\">\n" ) %
513 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Band count" ) % QStringLiteral(
"</td><td>" ) % QString::number(
bandCount() ) % QStringLiteral(
"</td></tr>\n" );
516 myMetadata += QStringLiteral(
"</table>\n<br><table width=\"100%\" class=\"tabular-view\">\n" ) %
517 QStringLiteral(
"<tr><th>" ) % tr(
"Number" ) % QStringLiteral(
"</th><th>" ) % tr(
"Band" ) % QStringLiteral(
"</th><th>" ) % tr(
"NoData" ) % QStringLiteral(
"</th><th>" ) %
518 tr(
"Min" ) % QStringLiteral(
"</th><th>" ) % tr(
"Max" ) % QStringLiteral(
"</th></tr>\n" );
525 rowClass = QStringLiteral(
"class=\"odd-row\"" );
527 myMetadata += QStringLiteral(
"<tr " ) % rowClass % QStringLiteral(
"><td>" ) % QString::number( i ) % QStringLiteral(
"</td><td>" ) %
bandName( i ) % QStringLiteral(
"</td><td>" );
530 myMetadata += QString::number(
dataProvider()->sourceNoDataValue( i ) );
532 myMetadata += tr(
"n/a" );
533 myMetadata += QLatin1String(
"</td>" );
538 myMetadata += QStringLiteral(
"<td>" ) % QString::number( myRasterBandStats.
minimumValue,
'f', 10 ) % QStringLiteral(
"</td>" ) %
539 QStringLiteral(
"<td>" ) % QString::number( myRasterBandStats.
maximumValue,
'f', 10 ) % QStringLiteral(
"</td>" );
543 myMetadata += QStringLiteral(
"<td>" ) % tr(
"n/a" ) % QStringLiteral(
"</td><td>" ) % tr(
"n/a" ) % QStringLiteral(
"</td>" );
546 myMetadata += QLatin1String(
"</tr>\n" );
550 myMetadata += QStringLiteral(
"</table>\n<br><br>" ) %
553 QStringLiteral(
"<h1>" ) % tr(
"Contacts" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
555 QStringLiteral(
"<br><br>\n" ) %
558 QStringLiteral(
"<h1>" ) % tr(
"References" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
560 QStringLiteral(
"<br><br>\n" ) %
563 QStringLiteral(
"<h1>" ) % tr(
"History" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
565 QStringLiteral(
"<br><br>\n" ) %
567 QStringLiteral(
"\n</body>\n</html>\n" );
592 if ( mDataProvider &&
597 const QList<QgsColorRampShader::ColorRampItem> myColorRampItemList = mDataProvider->
colorTable( bandNumber );
598 if ( !myColorRampItemList.isEmpty() )
604 const int mySize = 100;
605 QPixmap myPalettePixmap( mySize, mySize );
606 QPainter myQPainter( &myPalettePixmap );
608 QImage myQImage = QImage( mySize, mySize, QImage::Format_RGB32 );
610 myPalettePixmap.fill();
612 const double myStep = (
static_cast< double >( myColorRampItemList.size() ) - 1 ) /
static_cast< double >( mySize * mySize );
613 double myValue = 0.0;
614 for (
int myRow = 0; myRow < mySize; myRow++ )
616 QRgb *myLineBuffer =
reinterpret_cast< QRgb *
>( myQImage.scanLine( myRow ) );
617 for (
int myCol = 0; myCol < mySize; myCol++ )
619 myValue = myStep *
static_cast< double >( myCol + myRow * mySize );
621 myShader.
shade( myValue, &c1, &c2, &c3, &c4 );
622 myLineBuffer[ myCol ] = qRgba( c1, c2, c3, c4 );
626 myQPainter.drawImage( 0, 0, myQImage );
627 return myPalettePixmap;
629 const QPixmap myNullPixmap;
635 const QPixmap myNullPixmap;
657 if ( mDataProvider &&
669 if ( mDataProvider &&
681 if ( !mPipe->renderer() || mPipe->renderer()->opacity() ==
opacity )
684 mPipe->renderer()->setOpacity(
opacity );
693 return mPipe->renderer() ? mPipe->renderer()->opacity() : 1.0;
696void QgsRasterLayer::init()
719 mPipe = std::make_unique< QgsRasterPipe >();
720 mDataProvider =
nullptr;
736 mDataProvider = qobject_cast< QgsRasterDataProvider * >(
mPreloadedProvider.release() );
740 std::unique_ptr< QgsScopedRuntimeProfile > profile;
742 profile = std::make_unique< QgsScopedRuntimeProfile >( tr(
"Create %1 provider" ).arg( provider ), QStringLiteral(
"projectload" ) );
747 if ( !mDataProvider )
754 mDataProvider->setParent(
this );
757 mPipe->set( mDataProvider );
758 if ( !mDataProvider->
isValid() )
768 QgsDebugMsgLevel( QStringLiteral(
"Set Data provider QgsLayerMetadata identifier[%1]" ).arg(
metadata().identifier() ), 4 );
771 if ( provider == QLatin1String(
"gdal" ) )
846 QString errorMessage;
850 errorMessage.clear();
851 QgsDebugMsgLevel(
"Native Raster Raster Attribute Table read failed " + errorMessage, 2 );
852 if ( QFile::exists( mDataProvider->
dataSourceUri( ) +
".vat.dbf" ) )
854 std::unique_ptr<QgsRasterAttributeTable> rat = std::make_unique<QgsRasterAttributeTable>();
855 hasRat = rat->readFromFile( mDataProvider->
dataSourceUri( ) +
".vat.dbf", &errorMessage );
858 if ( rat->isValid( &errorMessage ) )
865 QgsDebugMsgLevel(
"DBF Raster Attribute Table is not valid, skipping: " + errorMessage, 2 );
870 QgsDebugMsgLevel(
"DBF Raster Attribute Table read failed " + errorMessage, 2 );
879 switch ( mRasterType )
897 const QList<QgsColorRampShader::ColorRampItem> colorTable = mDataProvider->
colorTable( 1 );
929 for (
int bandNo = 1; bandNo <= mDataProvider->
bandCount(); bandNo++ )
933 if (
auto *lRenderer = mPipe->renderer() )
935 lRenderer->setAlphaBand( bandNo );
956 QString resampling = settings.
value( QStringLiteral(
"/Raster/defaultZoomedInResampling" ), QStringLiteral(
"nearest neighbour" ) ).toString();
957 if ( resampling == QLatin1String(
"bilinear" ) )
962 else if ( resampling == QLatin1String(
"cubic" ) )
967 resampling = settings.
value( QStringLiteral(
"/Raster/defaultZoomedOutResampling" ), QStringLiteral(
"nearest neighbour" ) ).toString();
968 if ( resampling == QLatin1String(
"bilinear" ) )
991 mPipe->set( projector );
1043void QgsRasterLayer::setDataSourcePrivate(
const QString &dataSource,
const QString &baseName,
const QString &provider,
1048 const bool hadRenderer(
renderer() );
1050 QDomImplementation domImplementation;
1051 QDomDocumentType documentType;
1054 bool loadDefaultStyleFlag =
false;
1057 loadDefaultStyleFlag =
true;
1061 if ( hadRenderer && ! loadDefaultStyleFlag )
1063 documentType = domImplementation.createDocumentType(
1064 QStringLiteral(
"qgis" ), QStringLiteral(
"http://mrcc.com/qgis.dtd" ), QStringLiteral(
"SYSTEM" ) );
1066 QDomDocument doc = QDomDocument( documentType );
1067 QDomElement styleElem = doc.createElement( QStringLiteral(
"qgis" ) );
1068 styleElem.setAttribute( QStringLiteral(
"version" ),
Qgis::version() );
1070 if ( !
writeSymbology( styleElem, doc, errorMsg, writeContext ) )
1072 QgsDebugError( QStringLiteral(
"Could not store symbology for layer %1: %2" )
1078 doc.appendChild( styleElem );
1080 mOriginalStyleDocument = doc;
1081 mOriginalStyleElement = styleElem;
1085 if ( mDataProvider )
1086 closeDataProvider();
1090 for (
int i = mPipe->size() - 1; i >= 0; --i )
1100 if ( mDataProvider )
1106 bool defaultLoadedFlag =
false;
1107 bool restoredStyle =
false;
1108 if ( loadDefaultStyleFlag )
1112 else if ( !mOriginalStyleElement.isNull() )
1115 if ( !
readSymbology( mOriginalStyleElement, errorMsg, readContext ) )
1117 QgsDebugError( QStringLiteral(
"Could not restore symbology for layer %1: %2" )
1124 restoredStyle =
true;
1131 if ( !defaultLoadedFlag && !restoredStyle )
1138void QgsRasterLayer::writeRasterAttributeTableExternalPaths( QDomNode &layerNode, QDomDocument &doc,
const QgsReadWriteContext &context )
const
1144 QDomElement elem = doc.createElement( QStringLiteral(
"FileBasedAttributeTables" ) );
1145 for (
int bandNo = 1; bandNo <=
bandCount(); bandNo++ )
1149 QDomElement ratElem = doc.createElement( QStringLiteral(
"AttributeTable" ) );
1150 ratElem.setAttribute( QStringLiteral(
"band" ), bandNo );
1151 ratElem.setAttribute( QStringLiteral(
"path" ), context.
pathResolver().
writePath( rat->filePath( ) ) );
1152 elem.appendChild( ratElem );
1155 layerNode.appendChild( elem );
1159void QgsRasterLayer::readRasterAttributeTableExternalPaths(
const QDomNode &layerNode,
QgsReadWriteContext &context )
const
1161 const QDomElement ratsElement = layerNode.firstChildElement( QStringLiteral(
"FileBasedAttributeTables" ) );
1162 if ( !ratsElement.isNull() && ratsElement.childNodes().count() > 0 )
1164 const QDomNodeList ratElements { ratsElement.childNodes() };
1165 for (
int idx = 0; idx < ratElements.count(); idx++ )
1167 const QDomNode ratElement { ratElements.at( idx ) };
1168 if ( ratElement.attributes().contains( QStringLiteral(
"band" ) )
1169 && ratElement.attributes().contains( QStringLiteral(
"path" ) ) )
1172 const int band { ratElement.attributes().namedItem( QStringLiteral(
"band" ) ).nodeValue().toInt( &ok ) };
1175 if ( ! ok || band <= 0 || band >
bandCount() )
1177 QgsMessageLog::logMessage( tr(
"Error reading raster attribute table: invalid band %1." ).arg( band ), tr(
"Raster" ) );
1181 const QString path { context.
pathResolver().
readPath( ratElement.attributes().namedItem( QStringLiteral(
"path" ) ).nodeValue() ) };
1182 if ( ! QFile::exists( path ) )
1184 QgsMessageLog::logMessage( tr(
"Error loading raster attribute table, file not found: %1." ).arg( path ), tr(
"Raster" ) );
1188 std::unique_ptr<QgsRasterAttributeTable> rat = std::make_unique<QgsRasterAttributeTable>();
1189 QString errorMessage;
1190 if ( ! rat->readFromFile( path, &errorMessage ) )
1192 QgsMessageLog::logMessage( tr(
"Error loading raster attribute table from path %1: %2" ).arg( path, errorMessage ), tr(
"Raster" ) );
1203void QgsRasterLayer::closeDataProvider()
1208 mPipe->remove( mDataProvider );
1209 mDataProvider =
nullptr;
1212void QgsRasterLayer::computeMinMax(
int band,
1217 double &min,
double &max )
1221 min = std::numeric_limits<double>::quiet_NaN();
1222 max = std::numeric_limits<double>::quiet_NaN();
1223 if ( !mDataProvider )
1233 switch ( mDataProvider->
dataType( band ) )
1243 myRasterBandStats.
minimumValue = std::numeric_limits<int8_t>::lowest();
1244 myRasterBandStats.
maximumValue = std::numeric_limits<int8_t>::max();
1250 myRasterBandStats.
maximumValue = std::numeric_limits<uint16_t>::max();
1256 myRasterBandStats.
maximumValue = std::numeric_limits<uint32_t>::max();
1262 myRasterBandStats.
minimumValue = std::numeric_limits<int16_t>::lowest();
1263 myRasterBandStats.
maximumValue = std::numeric_limits<int16_t>::max();
1269 myRasterBandStats.
minimumValue = std::numeric_limits<int32_t>::lowest();
1270 myRasterBandStats.
maximumValue = std::numeric_limits<int32_t>::max();
1276 myRasterBandStats.
minimumValue = std::numeric_limits<float_t>::lowest();
1277 myRasterBandStats.
maximumValue = std::numeric_limits<float_t>::max();
1283 myRasterBandStats.
minimumValue = std::numeric_limits<double_t>::lowest();
1284 myRasterBandStats.
maximumValue = std::numeric_limits<double_t>::max();
1309 QgsDebugMsgLevel( QStringLiteral(
"myLower = %1 myUpper = %2" ).arg( myLower ).arg( myUpper ), 4 );
1312 QgsDebugMsgLevel( QStringLiteral(
"band = %1 min = %2 max = %3" ).arg( band ).arg( min ).arg( max ), 4 );
1320 return mDataProvider ? mDataProvider->
ignoreExtents() :
false;
1327 return mTemporalProperties;
1334 return mElevationProperties;
1345 generateLookupTableFlag,
1346 mPipe->renderer() );
1353 bool generateLookupTableFlag,
1359 if ( !rasterRenderer || !mDataProvider )
1365 QList<QgsContrastEnhancement *> myEnhancements;
1371 const QString rendererType = rasterRenderer->
type();
1372 if ( rendererType == QLatin1String(
"singlebandgray" ) )
1375 if ( !myGrayRenderer )
1380 myRasterRenderer = myGrayRenderer;
1383 else if ( rendererType == QLatin1String(
"multibandcolor" ) )
1386 if ( !myMultiBandRenderer )
1391 myRasterRenderer = myMultiBandRenderer;
1394 else if ( rendererType == QLatin1String(
"singlebandpseudocolor" ) )
1397 if ( !myPseudoColorRenderer )
1401 myBands << myPseudoColorRenderer->
inputBand();
1402 myRasterRenderer = myPseudoColorRenderer;
1403 myMinMaxOrigin = myPseudoColorRenderer->
minMaxOrigin();
1410 const auto constMyBands = myBands;
1411 for (
const int myBand : constMyBands )
1417 myEnhancement->setContrastEnhancementAlgorithm(
algorithm, generateLookupTableFlag );
1421 computeMinMax( myBand, myMinMaxOrigin, limits,
extent, sampleSize, min, max );
1423 if ( rendererType == QLatin1String(
"singlebandpseudocolor" ) )
1426 if ( ! myPseudoColorRenderer )
1434 bool minMaxChanged {
false };
1435 if ( ! std::isnan( min ) )
1438 minMaxChanged =
true;
1441 if ( ! std::isnan( max ) )
1444 minMaxChanged =
true;
1447 if ( minMaxChanged && myPseudoColorRenderer->
shader() )
1450 if ( colorRampShader )
1458 myEnhancement->setMinimumValue( min );
1459 myEnhancement->setMaximumValue( max );
1460 myEnhancements.append( myEnhancement.release() );
1465 myEnhancements.append(
nullptr );
1470 if ( rendererType == QLatin1String(
"singlebandgray" ) && myGrayRenderer )
1474 else if ( rendererType == QLatin1String(
"multibandcolor" ) && myMultiBandRenderer )
1482 qDeleteAll( myEnhancements );
1490 if ( myRasterRenderer )
1495 if ( rasterRenderer ==
renderer() )
1512 ce = singleBandRenderer->contrastEnhancement();
1551 if ( mDataProvider &&
1552 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded !=
extent &&
1556 refreshRenderer( rasterRenderer,
extent );
1564 if ( mDataProvider )
1580 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded =
extent;
1593 if ( colorRampShader )
1606 if ( colorRampShader )
1621 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded =
extent;
1631 if ( singleBandRenderer )
1633 else if ( multiBandRenderer )
1659 if ( !
isValid() || !mDataProvider )
1661 QgsDebugMsgLevel( QStringLiteral(
"invoked with invalid layer or null mDataProvider" ), 3 );
1662 return customProperty( QStringLiteral(
"storedSubsetString" ) ).toString();
1675 if ( !
isValid() || !mDataProvider )
1677 QgsDebugMsgLevel( QStringLiteral(
"invoked with invalid layer or null mDataProvider or while editing" ), 3 );
1715 QString defaultLimits;
1720 key = QStringLiteral(
"singleBand" );
1730 key = QStringLiteral(
"multiBandSingleByte" );
1738 key = QStringLiteral(
"multiBandMultiByte" );
1746 if ( key.isEmpty() )
1748 QgsDebugMsgLevel( QStringLiteral(
"No default contrast enhancement for this drawing style" ), 2 );
1755 const QString myAlgorithmString = mySettings.value(
"/Raster/defaultContrastEnhancementAlgorithm/" + key, defaultAlg ).toString();
1760 const QString myLimitsString = mySettings.value(
"/Raster/defaultContrastEnhancementLimits/" + key, defaultLimits ).toString();
1786 if ( mDataProvider )
1788 QgsDebugMsgLevel( QStringLiteral(
"About to mDataProvider->setLayerOrder(layers)." ), 4 );
1798 if ( mDataProvider )
1800 QgsDebugMsgLevel( QStringLiteral(
"About to mDataProvider->setSubLayerVisibility(name, vis)." ), 4 );
1809 if ( !mDataProvider )
1818 if (
auto *lRenderer = mPipe->renderer() )
1820 if ( !lRenderer->accept( visitor ) )
1831 Q_UNUSED( errorMessage )
1833 QVariantMap localProps = QVariantMap( props );
1843 QDomElement constraintElem = doc.createElement( QStringLiteral(
"sld:LayerFeatureConstraints" ) );
1844 node.appendChild( constraintElem );
1846 const QDomElement featureTypeConstraintElem = doc.createElement( QStringLiteral(
"sld:FeatureTypeConstraint" ) );
1847 constraintElem.appendChild( featureTypeConstraintElem );
1849 QDomElement userStyleElem = doc.createElement( QStringLiteral(
"sld:UserStyle" ) );
1850 node.appendChild( userStyleElem );
1852 if ( !
name().isEmpty() )
1854 QDomElement nameElem = doc.createElement( QStringLiteral(
"sld:Name" ) );
1855 nameElem.appendChild( doc.createTextNode(
name() ) );
1856 userStyleElem.appendChild( nameElem );
1862 QDomElement abstractElem = doc.createElement( QStringLiteral(
"sld:Abstract" ) );
1863 abstractElem.appendChild( doc.createTextNode(
abstract ) );
1864 userStyleElem.appendChild( abstractElem );
1868 if ( !
title.isEmpty() )
1870 QDomElement titleElem = doc.createElement( QStringLiteral(
"sld:Title" ) );
1871 titleElem.appendChild( doc.createTextNode(
title ) );
1872 userStyleElem.appendChild( titleElem );
1875 QDomElement featureTypeStyleElem = doc.createElement( QStringLiteral(
"sld:FeatureTypeStyle" ) );
1876 userStyleElem.appendChild( featureTypeStyleElem );
1886 QDomElement typeStyleNameElem = doc.createElement( QStringLiteral(
"sld:Name" ) );
1887 featureTypeStyleElem.appendChild( typeStyleNameElem );
1890 QDomElement typeStyleRuleElem = doc.createElement( QStringLiteral(
"sld:Rule" ) );
1891 featureTypeStyleElem.appendChild( typeStyleRuleElem );
1899 QDomElement minScaleElem = doc.createElement( QStringLiteral(
"sld:MinScaleDenominator" ) );
1900 minScaleElem.appendChild( doc.createTextNode( QString::number(
maximumScale() ) ) );
1901 typeStyleRuleElem.appendChild( minScaleElem );
1904 QDomElement maxScaleElem = doc.createElement( QStringLiteral(
"sld:MaxScaleDenominator" ) );
1905 maxScaleElem.appendChild( doc.createTextNode( QString::number(
minimumScale() ) ) );
1906 typeStyleRuleElem.appendChild( maxScaleElem );
1910 mPipe->renderer()->toSld( doc, typeStyleRuleElem, localProps );
1915 const QDomNodeList elements = typeStyleRuleElem.elementsByTagName( QStringLiteral(
"sld:RasterSymbolizer" ) );
1916 if ( elements.size() != 0 )
1919 QDomElement rasterSymbolizerElem = elements.at( 0 ).toElement();
1922 auto vendorOptionWriter = [&]( QString
name, QString value )
1924 QDomElement vendorOptionElem = doc.createElement( QStringLiteral(
"sld:VendorOption" ) );
1925 vendorOptionElem.setAttribute( QStringLiteral(
"name" ),
name );
1926 vendorOptionElem.appendChild( doc.createTextNode( value ) );
1927 rasterSymbolizerElem.appendChild( vendorOptionElem );
1932 vendorOptionWriter( QStringLiteral(
"invertColors" ), QString::number( 1 ) );
1942 property = QStringLiteral(
"lightness" );
1945 property = QStringLiteral(
"luminosity" );
1948 property = QStringLiteral(
"average" );
1954 if ( !property.isEmpty() )
1955 vendorOptionWriter( QStringLiteral(
"grayScale" ), property );
1961 vendorOptionWriter( QStringLiteral(
"colorizeOn" ), QString::number(
hueSaturationFilter()->colorizeOn() ) );
1962 vendorOptionWriter( QStringLiteral(
"colorizeRed" ), QString::number(
hueSaturationFilter()->colorizeColor().red() ) );
1963 vendorOptionWriter( QStringLiteral(
"colorizeGreen" ), QString::number(
hueSaturationFilter()->colorizeColor().green() ) );
1964 vendorOptionWriter( QStringLiteral(
"colorizeBlue" ), QString::number(
hueSaturationFilter()->colorizeColor().blue() ) );
1966 vendorOptionWriter( QStringLiteral(
"colorizeStrength" ), QString::number(
hueSaturationFilter()->colorizeStrength() / 100.0 ) );
1967 vendorOptionWriter( QStringLiteral(
"saturation" ), QString::number(
hueSaturationFilter()->colorizeColor().saturationF() ) );
1976 const double sF = ( s - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
1977 vendorOptionWriter( QStringLiteral(
"saturation" ), QString::number( sF ) );
1986 const double bF = ( b - ( -255.0 ) ) / ( 255.0 - ( -255.0 ) );
1987 vendorOptionWriter( QStringLiteral(
"brightness" ), QString::number( bF ) );
1995 const double cF = (
c - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
1996 vendorOptionWriter( QStringLiteral(
"contrast" ), QString::number( cF ) );
2010 if ( newProps.contains( QStringLiteral(
"contrast" ) ) )
2013 double contrast = newProps[ QStringLiteral(
"contrast" ) ].toDouble();
2014 double percentage = ( contrast - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
2015 if ( percentage <= 0.5 )
2018 gamma = percentage / 0.5;
2025 QDomElement globalContrastEnhancementElem = doc.createElement( QStringLiteral(
"sld:ContrastEnhancement" ) );
2026 rasterSymolizerElem.appendChild( globalContrastEnhancementElem );
2028 QDomElement gammaValueElem = doc.createElement( QStringLiteral(
"sld:GammaValue" ) );
2029 gammaValueElem.appendChild( doc.createTextNode( QString::number( gamma ) ) );
2030 globalContrastEnhancementElem.appendChild( gammaValueElem );
2057 return mPipe->renderer();
2064 return mPipe->resampleFilter();
2071 return mPipe->brightnessFilter();
2078 return mPipe->hueSaturationFilter();
2096 if ( mDataProvider )
2105 if ( ! mDataProvider )
2106 return QStringList();
2116 QImage image( size, format );
2121 if ( image.format() == QImage::Format_Indexed8 )
2123 image.setColor( 0, bgColor.rgba() );
2128 image.fill( bgColor );
2133 double mapUnitsPerPixel;
2139 mapUnitsPerPixel =
extent.
width() / image.width();
2140 y = ( image.height() -
extent.
height() / mapUnitsPerPixel ) / 2;
2145 x = ( image.width() -
extent.
width() / mapUnitsPerPixel ) / 2;
2148 const double pixelWidth =
extent.
width() / mapUnitsPerPixel;
2149 const double pixelHeight =
extent.
height() / mapUnitsPerPixel;
2153 rasterViewPort->
mWidth = image.width();
2154 rasterViewPort->
mHeight = image.height();
2162 QPainter *painter =
new QPainter( &image );
2163 draw( painter, rasterViewPort, mapToPixel );
2164 delete rasterViewPort;
2178 Q_UNUSED( errorMessage )
2181 QDomElement rasterRendererElem;
2183 const QDomElement layerElement = layer_node.toElement();
2193 QDomNode pipeNode = layer_node.firstChildElement( QStringLiteral(
"pipe" ) );
2194 if ( pipeNode.isNull() )
2196 pipeNode = layer_node;
2200 if ( !layer_node.firstChildElement( QStringLiteral(
"rasterproperties" ) ).isNull() )
2203 QDomNode layerNodeCopy = layer_node.cloneNode();
2204 QDomDocument doc = layerNodeCopy.ownerDocument();
2205 QDomElement rasterPropertiesElem = layerNodeCopy.firstChildElement( QStringLiteral(
"rasterproperties" ) );
2208 rasterRendererElem = layerNodeCopy.firstChildElement( QStringLiteral(
"rasterrenderer" ) );
2213 rasterRendererElem = pipeNode.firstChildElement( QStringLiteral(
"rasterrenderer" ) );
2216 if ( !rasterRendererElem.isNull() )
2218 const QString rendererType = rasterRendererElem.attribute( QStringLiteral(
"type" ) );
2232 const QDomElement brightnessElem = pipeNode.firstChildElement( QStringLiteral(
"brightnesscontrast" ) );
2233 if ( !brightnessElem.isNull() )
2243 const QDomElement hueSaturationElem = pipeNode.firstChildElement( QStringLiteral(
"huesaturation" ) );
2244 if ( !hueSaturationElem.isNull() )
2254 const QDomElement resampleElem = pipeNode.firstChildElement( QStringLiteral(
"rasterresampler" ) );
2255 if ( !resampleElem.isNull() )
2261 if ( mDataProvider )
2263 const QDomElement providerElem = pipeNode.firstChildElement( QStringLiteral(
"provider" ) );
2264 if ( !providerElem.isNull() )
2266 mDataProvider->
readXml( providerElem );
2271 const QDomNode resamplingStageElement = pipeNode.namedItem( QStringLiteral(
"resamplingStage" ) );
2272 if ( !resamplingStageElement.isNull() )
2274 const QDomElement e = resamplingStageElement.toElement();
2275 if ( e.text() == QLatin1String(
"provider" ) )
2277 else if ( e.text() == QLatin1String(
"resamplingFilter" ) )
2282 const QDomNode blendModeNode = layer_node.namedItem( QStringLiteral(
"blendMode" ) );
2283 if ( !blendModeNode.isNull() )
2285 const QDomElement e = blendModeNode.toElement();
2289 const QDomElement elemDataDefinedProperties = layer_node.firstChildElement( QStringLiteral(
"pipe-data-defined-properties" ) );
2290 if ( !elemDataDefinedProperties.isNull() )
2294 if ( categories.testFlag(
MapTips ) )
2296 QDomElement mapTipElem = layer_node.namedItem( QStringLiteral(
"mapTip" ) ).toElement();
2298 setMapTipsEnabled( mapTipElem.attribute( QStringLiteral(
"enabled" ), QStringLiteral(
"1" ) ).toInt() == 1 );
2304 readRasterAttributeTableExternalPaths( layer_node, context );
2317 return readSymbology( node, errorMessage, context, categories );
2328 const QDomNode pkeyNode = layer_node.namedItem( QStringLiteral(
"provider" ) );
2330 if ( pkeyNode.isNull() )
2336 const QDomElement pkeyElt = pkeyNode.toElement();
2350 const QDomNode rpNode = layer_node.namedItem( QStringLiteral(
"rasterproperties" ) );
2356 if ( !
mDataSource.contains( QLatin1String(
"crs=" ) ) && !
mDataSource.contains( QLatin1String(
"format=" ) ) )
2358 QgsDebugMsgLevel( QStringLiteral(
"Old WMS URI format detected -> adding params" ), 4 );
2361 QDomElement layerElement = rpNode.firstChildElement( QStringLiteral(
"wmsSublayer" ) );
2362 while ( !layerElement.isNull() )
2367 uri.
setParam( QStringLiteral(
"layers" ), layerElement.namedItem( QStringLiteral(
"name" ) ).toElement().text() );
2370 uri.
setParam( QStringLiteral(
"styles" ), layerElement.namedItem( QStringLiteral(
"style" ) ).toElement().text() );
2372 layerElement = layerElement.nextSiblingElement( QStringLiteral(
"wmsSublayer" ) );
2376 uri.
setParam( QStringLiteral(
"format" ), rpNode.namedItem( QStringLiteral(
"wmsFormat" ) ).toElement().text() );
2380 uri.
setParam( QStringLiteral(
"crs" ),
crs().authid() );
2393 const QDomNode extentNode = layer_node.namedItem( QStringLiteral(
"extent" ) );
2394 if ( !extentNode.isNull() )
2406 mOriginalStyleElement = layer_node.namedItem( QStringLiteral(
"originalStyle" ) ).firstChildElement();
2407 if ( mOriginalStyleElement.isNull() )
2408 mOriginalStyleElement = layer_node.toElement();
2409 mOriginalStyleDocument = layer_node.ownerDocument();
2411 if ( ! mDataProvider )
2435 QDomNode stampNode = layer_node.namedItem(
"timestamp" );
2436 if ( !stampNode.isNull() )
2438 QDateTime stamp = QDateTime::fromString( stampNode.toElement().text(), Qt::ISODate );
2440 if ( stamp < mDataProvider->dataTimestamp() )
2443 closeDataProvider();
2446 if ( !
isValid() )
return false;
2452 const QDomElement noDataElement = layer_node.firstChildElement( QStringLiteral(
"noData" ) );
2454 const QDomNodeList noDataBandList = noDataElement.elementsByTagName( QStringLiteral(
"noDataList" ) );
2456 for (
int i = 0; mDataProvider && i < noDataBandList.size(); ++i )
2458 const QDomElement bandElement = noDataBandList.at( i ).toElement();
2460 const int bandNo = bandElement.attribute( QStringLiteral(
"bandNo" ) ).toInt( &ok );
2462 if ( ok && ( bandNo > 0 ) && ( bandNo <= mDataProvider->
bandCount() ) )
2464 mDataProvider->
setUseSourceNoDataValue( bandNo, bandElement.attribute( QStringLiteral(
"useSrcNoData" ) ).toInt() );
2467 const QDomNodeList rangeList = bandElement.elementsByTagName( QStringLiteral(
"noDataRange" ) );
2469 myNoDataRangeList.reserve( rangeList.size() );
2470 for (
int j = 0; j < rangeList.size(); ++j )
2472 const QDomElement rangeElement = rangeList.at( j ).toElement();
2473 const QgsRasterRange myNoDataRange( rangeElement.attribute( QStringLiteral(
"min" ) ).toDouble(),
2474 rangeElement.attribute( QStringLiteral(
"max" ) ).toDouble() );
2475 QgsDebugMsgLevel( QStringLiteral(
"min = %1 %2" ).arg( rangeElement.attribute(
"min" ) ).arg( myNoDataRange.
min() ), 4 );
2476 myNoDataRangeList << myNoDataRange;
2482 readRasterAttributeTableExternalPaths( layer_node, context );
2494 Q_UNUSED( errorMessage )
2497 QDomElement layerElement = layer_node.toElement();
2502 if ( categories.testFlag(
MapTips ) )
2504 QDomElement mapTipElem = document.createElement( QStringLiteral(
"mapTip" ) );
2505 mapTipElem.setAttribute( QStringLiteral(
"enabled" ),
mapTipsEnabled() );
2506 QDomText mapTipText = document.createTextNode(
mapTipTemplate() );
2507 mapTipElem.appendChild( mapTipText );
2508 layer_node.toElement().appendChild( mapTipElem );
2514 writeRasterAttributeTableExternalPaths( layer_node, document, context );
2522 QDomElement pipeElement = document.createElement( QStringLiteral(
"pipe" ) );
2524 for (
int i = 0; i < mPipe->size(); i++ )
2527 if ( !interface )
continue;
2528 interface->writeXml( document, pipeElement );
2531 QDomElement elemDataDefinedProperties = document.createElement( QStringLiteral(
"pipe-data-defined-properties" ) );
2533 layer_node.appendChild( elemDataDefinedProperties );
2535 QDomElement resamplingStageElement = document.createElement( QStringLiteral(
"resamplingStage" ) );
2537 resamplingStageElement.appendChild( resamplingStageText );
2538 pipeElement.appendChild( resamplingStageElement );
2540 layer_node.appendChild( pipeElement );
2542 if ( !
isValid() && !mOriginalStyleElement.isNull() )
2544 QDomElement originalStyleElement = document.createElement( QStringLiteral(
"originalStyle" ) );
2545 originalStyleElement.appendChild( mOriginalStyleElement );
2546 layer_node.appendChild( originalStyleElement );
2550 QDomElement blendModeElement = document.createElement( QStringLiteral(
"blendMode" ) );
2552 blendModeElement.appendChild( blendModeText );
2553 layer_node.appendChild( blendModeElement );
2564 return writeSymbology( node, doc, errorMessage, context, categories );
2568 QDomDocument &document,
2573 if ( !mDataProvider )
2578 QDomElement mapLayerNode = layer_node.toElement();
2580 if ( mapLayerNode.isNull() ||
"maplayer" != mapLayerNode.nodeName() )
2590 QDomElement provider = document.createElement( QStringLiteral(
"provider" ) );
2591 const QDomText providerText = document.createTextNode(
mProviderKey );
2592 provider.appendChild( providerText );
2593 layer_node.appendChild( provider );
2596 QDomElement noData = document.createElement( QStringLiteral(
"noData" ) );
2598 for (
int bandNo = 1; bandNo <= mDataProvider->
bandCount(); bandNo++ )
2600 QDomElement noDataRangeList = document.createElement( QStringLiteral(
"noDataList" ) );
2601 noDataRangeList.setAttribute( QStringLiteral(
"bandNo" ), bandNo );
2602 noDataRangeList.setAttribute( QStringLiteral(
"useSrcNoData" ), mDataProvider->
useSourceNoDataValue( bandNo ) );
2604 const auto constUserNoDataValues = mDataProvider->
userNoDataValues( bandNo );
2607 QDomElement noDataRange = document.createElement( QStringLiteral(
"noDataRange" ) );
2611 noDataRangeList.appendChild( noDataRange );
2614 noData.appendChild( noDataRangeList );
2617 if ( noData.hasChildNodes() )
2619 layer_node.appendChild( noData );
2623 writeRasterAttributeTableExternalPaths( layer_node, document, context );
2631 return writeSymbology( layer_node, document, errorMsg, context );
2653 if ( !mDataProvider )
return 0;
2654 return mDataProvider->
xSize();
2661 if ( !mDataProvider )
return 0;
2662 return mDataProvider->
ySize();
2669 mPipe->setResamplingStage( stage );
2676 return mPipe->resamplingStage();
2679bool QgsRasterLayer::update()
2688 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.