55#include "qgsgdalprovider.h"
70#include <QApplication>
78#include <QFontMetrics>
85#include <QRegularExpression>
89#define ERR(message) QGS_ERROR_MESSAGE(message,"Raster layer")
109 , QSTRING_NOT_SET( QStringLiteral(
"Not Set" ) )
110 , TRSTRING_NOT_SET( tr(
"Not Set" ) )
120 const QString &baseName,
121 const QString &providerKey,
125 , QSTRING_NOT_SET( QStringLiteral(
"Not Set" ) )
126 , TRSTRING_NOT_SET( tr(
"Not Set" ) )
137 QgsDataProvider::ReadFlags providerFlags = QgsDataProvider::ReadFlags();
142 setDataSource( uri, baseName, providerKey, providerOptions, providerFlags );
168 layer->mElevationProperties = mElevationProperties->
clone();
169 layer->mElevationProperties->setParent( layer );
172 for (
int i = 1; i < mPipe->size(); i++ )
174 if ( mPipe->at( i ) )
175 layer->
pipe()->
set( mPipe->at( i )->clone() );
184 if ( !mElevationProperties->
isEnabled() )
198 const bool myIsValid = QgsGdalProvider::isValidRasterFileName( fileNameQString, retErrMsg );
213 const QFileInfo fi(
name );
219 t = fi.lastModified();
242 if ( !mDataProvider )
return 0;
248 if ( !mDataProvider )
return QString();
259 return mDataProvider;
264 return mDataProvider;
296 bool restoreOldResamplingStage =
false;
304 if ( mDataProvider !=
nullptr &&
309 restoreOldResamplingStage =
true;
318 drawer.
draw( theQPainter, rasterViewPort, qgsMapToPixel );
320 if ( restoreOldResamplingStage )
325 QgsDebugMsgLevel( QStringLiteral(
"total raster draw time (ms): %1" ).arg( time.elapsed(), 5 ), 4 );
336 if ( !mDataProvider )
340 QString myMetadata = QStringLiteral(
"<html><head></head>\n<body>\n" );
345 myMetadata += QStringLiteral(
"<h1>" ) + tr(
"Information from provider" ) + QStringLiteral(
"</h1>\n<hr>\n" ) + QStringLiteral(
"<table class=\"list-view\">\n" );
347 myMetadata += QStringLiteral(
"\n" ) %
349 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Extent" ) % QStringLiteral(
"</td><td>" ) %
extent().
toString() % QStringLiteral(
"</td></tr>\n" ) %
352 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Width" ) % QStringLiteral(
"</td><td>" );
354 myMetadata += QString::number(
width() );
356 myMetadata += tr(
"n/a" );
357 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
360 QStringLiteral(
"<tr><td class=\"highlight\">" ) + tr(
"Height" ) + QStringLiteral(
"</td><td>" );
362 myMetadata += QString::number(
height() );
364 myMetadata += tr(
"n/a" );
365 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
368 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Data type" ) % QStringLiteral(
"</td><td>" );
373 myMetadata += tr(
"Byte - Eight bit unsigned integer" );
376 myMetadata += tr(
"UInt16 - Sixteen bit unsigned integer " );
379 myMetadata += tr(
"Int16 - Sixteen bit signed integer " );
382 myMetadata += tr(
"UInt32 - Thirty two bit unsigned integer " );
385 myMetadata += tr(
"Int32 - Thirty two bit signed integer " );
388 myMetadata += tr(
"Float32 - Thirty two bit floating point " );
391 myMetadata += tr(
"Float64 - Sixty four bit floating point " );
394 myMetadata += tr(
"CInt16 - Complex Int16 " );
397 myMetadata += tr(
"CInt32 - Complex Int32 " );
400 myMetadata += tr(
"CFloat32 - Complex Float32 " );
403 myMetadata += tr(
"CFloat64 - Complex Float64 " );
406 myMetadata += tr(
"Could not determine raster data type." );
408 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
414 QStringLiteral(
"</table>\n<br><br>" );
420 myMetadata += QStringLiteral(
"<h1>" ) % tr(
"Identification" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
422 QStringLiteral(
"<br><br>\n" ) %
425 QStringLiteral(
"<h1>" ) % tr(
"Extent" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
427 QStringLiteral(
"<br><br>\n" ) %
430 QStringLiteral(
"<h1>" ) % tr(
"Access" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
432 QStringLiteral(
"<br><br>\n" ) %
435 QStringLiteral(
"</table>\n<br><br><h1>" ) % tr(
"Bands" ) % QStringLiteral(
"</h1>\n<hr>\n<table class=\"list-view\">\n" ) %
438 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Band count" ) % QStringLiteral(
"</td><td>" ) % QString::number(
bandCount() ) % QStringLiteral(
"</td></tr>\n" );
441 myMetadata += QStringLiteral(
"</table>\n<br><table width=\"100%\" class=\"tabular-view\">\n" ) %
442 QStringLiteral(
"<tr><th>" ) % tr(
"Number" ) % QStringLiteral(
"</th><th>" ) % tr(
"Band" ) % QStringLiteral(
"</th><th>" ) % tr(
"No-Data" ) % QStringLiteral(
"</th><th>" ) %
443 tr(
"Min" ) % QStringLiteral(
"</th><th>" ) % tr(
"Max" ) % QStringLiteral(
"</th></tr>\n" );
450 rowClass = QStringLiteral(
"class=\"odd-row\"" );
452 myMetadata += QStringLiteral(
"<tr " ) % rowClass % QStringLiteral(
"><td>" ) % QString::number( i ) % QStringLiteral(
"</td><td>" ) %
bandName( i ) % QStringLiteral(
"</td><td>" );
455 myMetadata += QString::number(
dataProvider()->sourceNoDataValue( i ) );
457 myMetadata += tr(
"n/a" );
458 myMetadata += QLatin1String(
"</td>" );
463 myMetadata += QStringLiteral(
"<td>" ) % QString::number( myRasterBandStats.
minimumValue,
'f', 10 ) % QStringLiteral(
"</td>" ) %
464 QStringLiteral(
"<td>" ) % QString::number( myRasterBandStats.
maximumValue,
'f', 10 ) % QStringLiteral(
"</td>" );
468 myMetadata += QStringLiteral(
"<td>" ) % tr(
"n/a" ) % QStringLiteral(
"</td><td>" ) % tr(
"n/a" ) % QStringLiteral(
"</td>" );
471 myMetadata += QLatin1String(
"</tr>\n" );
475 myMetadata += QStringLiteral(
"</table>\n<br><br>" ) %
478 QStringLiteral(
"<h1>" ) % tr(
"Contacts" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
480 QStringLiteral(
"<br><br>\n" ) %
483 QStringLiteral(
"<h1>" ) % tr(
"References" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
485 QStringLiteral(
"<br><br>\n" ) %
488 QStringLiteral(
"<h1>" ) % tr(
"History" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
490 QStringLiteral(
"<br><br>\n" ) %
492 QStringLiteral(
"\n</body>\n</html>\n" );
498 Qgis::MapLayerProperties res;
513 if ( mDataProvider &&
518 const QList<QgsColorRampShader::ColorRampItem> myColorRampItemList = mDataProvider->
colorTable( bandNumber );
519 if ( !myColorRampItemList.isEmpty() )
525 const int mySize = 100;
526 QPixmap myPalettePixmap( mySize, mySize );
527 QPainter myQPainter( &myPalettePixmap );
529 QImage myQImage = QImage( mySize, mySize, QImage::Format_RGB32 );
531 myPalettePixmap.fill();
533 const double myStep = (
static_cast< double >( myColorRampItemList.size() ) - 1 ) /
static_cast< double >( mySize * mySize );
534 double myValue = 0.0;
535 for (
int myRow = 0; myRow < mySize; myRow++ )
537 QRgb *myLineBuffer =
reinterpret_cast< QRgb *
>( myQImage.scanLine( myRow ) );
538 for (
int myCol = 0; myCol < mySize; myCol++ )
540 myValue = myStep *
static_cast< double >( myCol + myRow * mySize );
542 myShader.
shade( myValue, &c1, &c2, &c3, &c4 );
543 myLineBuffer[ myCol ] = qRgba( c1, c2, c3, c4 );
547 myQPainter.drawImage( 0, 0, myQImage );
548 return myPalettePixmap;
550 const QPixmap myNullPixmap;
556 const QPixmap myNullPixmap;
574 if ( mDataProvider &&
584 if ( mDataProvider &&
594 if ( !mPipe->renderer() || mPipe->renderer()->opacity() ==
opacity )
597 mPipe->renderer()->setOpacity(
opacity );
604 return mPipe->renderer() ? mPipe->renderer()->opacity() : 1.0;
607void QgsRasterLayer::init()
626 mPipe = std::make_unique< QgsRasterPipe >();
627 mDataProvider =
nullptr;
641 std::unique_ptr< QgsScopedRuntimeProfile > profile;
643 profile = std::make_unique< QgsScopedRuntimeProfile >( tr(
"Create %1 provider" ).arg( provider ), QStringLiteral(
"projectload" ) );
646 if ( !mDataProvider )
653 mDataProvider->setParent(
this );
656 mPipe->set( mDataProvider );
657 if ( !mDataProvider->
isValid() )
667 QgsDebugMsgLevel( QStringLiteral(
"Set Data provider QgsLayerMetadata identifier[%1]" ).arg(
metadata().identifier() ), 4 );
670 if ( provider == QLatin1String(
"gdal" ) )
703 if ( ( mDataProvider->
bandCount() > 1 ) )
751 const QList<QgsColorRampShader::ColorRampItem> colorTable = mDataProvider->
colorTable( 1 );
774 for (
int bandNo = 1; bandNo <= mDataProvider->
bandCount(); bandNo++ )
778 if (
auto *lRenderer = mPipe->renderer() )
780 lRenderer->setAlphaBand( bandNo );
801 QString resampling = settings.
value( QStringLiteral(
"/Raster/defaultZoomedInResampling" ), QStringLiteral(
"nearest neighbour" ) ).toString();
802 if ( resampling == QLatin1String(
"bilinear" ) )
807 else if ( resampling == QLatin1String(
"cubic" ) )
812 resampling = settings.
value( QStringLiteral(
"/Raster/defaultZoomedOutResampling" ), QStringLiteral(
"nearest neighbour" ) ).toString();
813 if ( resampling == QLatin1String(
"bilinear" ) )
819 const double maxOversampling = settings.
value( QStringLiteral(
"/Raster/defaultOversampling" ), 2.0 ).toDouble();
824 settings.
value( QStringLiteral(
"/Raster/defaultEarlyResampling" ),
false ).toBool() )
836 mPipe->set( projector );
880void QgsRasterLayer::setDataSourcePrivate(
const QString &dataSource,
const QString &baseName,
const QString &provider,
883 const bool hadRenderer(
renderer() );
885 QDomImplementation domImplementation;
886 QDomDocumentType documentType;
889 bool loadDefaultStyleFlag =
false;
892 loadDefaultStyleFlag =
true;
896 if ( hadRenderer && ! loadDefaultStyleFlag )
898 documentType = domImplementation.createDocumentType(
899 QStringLiteral(
"qgis" ), QStringLiteral(
"http://mrcc.com/qgis.dtd" ), QStringLiteral(
"SYSTEM" ) );
901 QDomDocument doc = QDomDocument( documentType );
902 QDomElement styleElem = doc.createElement( QStringLiteral(
"qgis" ) );
903 styleElem.setAttribute( QStringLiteral(
"version" ),
Qgis::version() );
907 QgsDebugMsg( QStringLiteral(
"Could not store symbology for layer %1: %2" )
913 doc.appendChild( styleElem );
915 mOriginalStyleDocument = doc;
916 mOriginalStyleElement = styleElem;
925 for (
int i = mPipe->size() - 1; i >= 0; --i )
941 bool defaultLoadedFlag =
false;
942 bool restoredStyle =
false;
943 if ( loadDefaultStyleFlag )
947 else if ( !mOriginalStyleElement.isNull() )
950 if ( !
readSymbology( mOriginalStyleElement, errorMsg, readContext ) )
952 QgsDebugMsg( QStringLiteral(
"Could not restore symbology for layer %1: %2" )
959 restoredStyle =
true;
966 if ( !defaultLoadedFlag && !restoredStyle )
973void QgsRasterLayer::closeDataProvider()
976 mPipe->remove( mDataProvider );
977 mDataProvider =
nullptr;
980void QgsRasterLayer::computeMinMax(
int band,
985 double &min,
double &max )
988 min = std::numeric_limits<double>::quiet_NaN();
989 max = std::numeric_limits<double>::quiet_NaN();
990 if ( !mDataProvider )
997 if ( myRasterBandStats.
statsGathered == QgsRasterBandStats::Stats::None )
1000 switch ( mDataProvider->
dataType( band ) )
1011 myRasterBandStats.
maximumValue = std::numeric_limits<uint16_t>::max();
1017 myRasterBandStats.
maximumValue = std::numeric_limits<uint32_t>::max();
1023 myRasterBandStats.
minimumValue = std::numeric_limits<int16_t>::lowest();
1024 myRasterBandStats.
maximumValue = std::numeric_limits<int16_t>::max();
1030 myRasterBandStats.
minimumValue = std::numeric_limits<int32_t>::lowest();
1031 myRasterBandStats.
maximumValue = std::numeric_limits<int32_t>::max();
1037 myRasterBandStats.
minimumValue = std::numeric_limits<float_t>::lowest();
1038 myRasterBandStats.
maximumValue = std::numeric_limits<float_t>::max();
1044 myRasterBandStats.
minimumValue = std::numeric_limits<double_t>::lowest();
1045 myRasterBandStats.
maximumValue = std::numeric_limits<double_t>::max();
1070 QgsDebugMsgLevel( QStringLiteral(
"myLower = %1 myUpper = %2" ).arg( myLower ).arg( myUpper ), 4 );
1073 QgsDebugMsgLevel( QStringLiteral(
"band = %1 min = %2 max = %3" ).arg( band ).arg( min ).arg( max ), 4 );
1079 return mDataProvider ? mDataProvider->
ignoreExtents() :
false;
1084 return mTemporalProperties;
1089 return mElevationProperties;
1098 generateLookupTableFlag,
1099 mPipe->renderer() );
1106 bool generateLookupTableFlag,
1110 if ( !rasterRenderer || !mDataProvider )
1116 QList<QgsContrastEnhancement *> myEnhancements;
1122 const QString rendererType = rasterRenderer->
type();
1123 if ( rendererType == QLatin1String(
"singlebandgray" ) )
1126 if ( !myGrayRenderer )
1130 myBands << myGrayRenderer->
grayBand();
1131 myRasterRenderer = myGrayRenderer;
1134 else if ( rendererType == QLatin1String(
"multibandcolor" ) )
1137 if ( !myMultiBandRenderer )
1142 myRasterRenderer = myMultiBandRenderer;
1145 else if ( rendererType == QLatin1String(
"singlebandpseudocolor" ) )
1148 if ( !myPseudoColorRenderer )
1152 myBands << myPseudoColorRenderer->
band();
1153 myRasterRenderer = myPseudoColorRenderer;
1154 myMinMaxOrigin = myPseudoColorRenderer->
minMaxOrigin();
1161 const auto constMyBands = myBands;
1162 for (
const int myBand : constMyBands )
1168 myEnhancement->setContrastEnhancementAlgorithm(
algorithm, generateLookupTableFlag );
1172 computeMinMax( myBand, myMinMaxOrigin, limits,
extent, sampleSize, min, max );
1174 if ( rendererType == QLatin1String(
"singlebandpseudocolor" ) )
1178 if ( myPseudoColorRenderer->
shader() )
1181 if ( colorRampShader )
1189 myEnhancement->setMinimumValue( min );
1190 myEnhancement->setMaximumValue( max );
1191 myEnhancements.append( myEnhancement.release() );
1196 myEnhancements.append(
nullptr );
1200 if ( rendererType == QLatin1String(
"singlebandgray" ) )
1204 else if ( rendererType == QLatin1String(
"multibandcolor" ) )
1212 qDeleteAll( myEnhancements );
1220 if ( myRasterRenderer )
1225 if ( rasterRenderer ==
renderer() )
1277 if ( mDataProvider &&
1278 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded !=
extent &&
1282 refreshRenderer( rasterRenderer,
extent );
1288 if ( mDataProvider )
1304 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded =
extent;
1307 computeMinMax( sbpcr->
band(),
1317 if ( colorRampShader )
1330 if ( colorRampShader )
1345 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded =
extent;
1355 if ( singleBandRenderer )
1357 else if ( multiBandRenderer )
1381 if ( !
isValid() || !mDataProvider )
1383 QgsDebugMsgLevel( QStringLiteral(
"invoked with invalid layer or null mDataProvider" ), 3 );
1384 return customProperty( QStringLiteral(
"storedSubsetString" ) ).toString();
1395 if ( !
isValid() || !mDataProvider )
1397 QgsDebugMsgLevel( QStringLiteral(
"invoked with invalid layer or null mDataProvider or while editing" ), 3 );
1433 QString defaultLimits;
1438 key = QStringLiteral(
"singleBand" );
1448 key = QStringLiteral(
"multiBandSingleByte" );
1456 key = QStringLiteral(
"multiBandMultiByte" );
1464 if ( key.isEmpty() )
1466 QgsDebugMsgLevel( QStringLiteral(
"No default contrast enhancement for this drawing style" ), 2 );
1473 const QString myAlgorithmString = mySettings.
value(
"/Raster/defaultContrastEnhancementAlgorithm/" + key, defaultAlg ).toString();
1478 const QString myLimitsString = mySettings.
value(
"/Raster/defaultContrastEnhancementLimits/" + key, defaultLimits ).toString();
1500 if ( mDataProvider )
1502 QgsDebugMsgLevel( QStringLiteral(
"About to mDataProvider->setLayerOrder(layers)." ), 4 );
1511 if ( mDataProvider )
1513 QgsDebugMsgLevel( QStringLiteral(
"About to mDataProvider->setSubLayerVisibility(name, vis)." ), 4 );
1521 if ( !mDataProvider )
1528 if (
auto *lRenderer = mPipe->renderer() )
1530 if ( !lRenderer->accept( visitor ) )
1539 Q_UNUSED( errorMessage )
1541 QVariantMap localProps = QVariantMap( props );
1551 QDomElement constraintElem = doc.createElement( QStringLiteral(
"sld:LayerFeatureConstraints" ) );
1552 node.appendChild( constraintElem );
1554 const QDomElement featureTypeConstraintElem = doc.createElement( QStringLiteral(
"sld:FeatureTypeConstraint" ) );
1555 constraintElem.appendChild( featureTypeConstraintElem );
1557 QDomElement userStyleElem = doc.createElement( QStringLiteral(
"sld:UserStyle" ) );
1558 node.appendChild( userStyleElem );
1560 if ( !
name().isEmpty() )
1562 QDomElement nameElem = doc.createElement( QStringLiteral(
"sld:Name" ) );
1563 nameElem.appendChild( doc.createTextNode(
name() ) );
1564 userStyleElem.appendChild( nameElem );
1569 QDomElement abstractElem = doc.createElement( QStringLiteral(
"sld:Abstract" ) );
1570 abstractElem.appendChild( doc.createTextNode(
abstract() ) );
1571 userStyleElem.appendChild( abstractElem );
1574 if ( !
title().isEmpty() )
1576 QDomElement titleElem = doc.createElement( QStringLiteral(
"sld:Title" ) );
1577 titleElem.appendChild( doc.createTextNode(
title() ) );
1578 userStyleElem.appendChild( titleElem );
1581 QDomElement featureTypeStyleElem = doc.createElement( QStringLiteral(
"sld:FeatureTypeStyle" ) );
1582 userStyleElem.appendChild( featureTypeStyleElem );
1592 QDomElement typeStyleNameElem = doc.createElement( QStringLiteral(
"sld:Name" ) );
1593 featureTypeStyleElem.appendChild( typeStyleNameElem );
1596 QDomElement typeStyleRuleElem = doc.createElement( QStringLiteral(
"sld:Rule" ) );
1597 featureTypeStyleElem.appendChild( typeStyleRuleElem );
1605 QDomElement minScaleElem = doc.createElement( QStringLiteral(
"sld:MinScaleDenominator" ) );
1606 minScaleElem.appendChild( doc.createTextNode( QString::number(
maximumScale() ) ) );
1607 typeStyleRuleElem.appendChild( minScaleElem );
1610 QDomElement maxScaleElem = doc.createElement( QStringLiteral(
"sld:MaxScaleDenominator" ) );
1611 maxScaleElem.appendChild( doc.createTextNode( QString::number(
minimumScale() ) ) );
1612 typeStyleRuleElem.appendChild( maxScaleElem );
1616 mPipe->renderer()->toSld( doc, typeStyleRuleElem, localProps );
1621 const QDomNodeList elements = typeStyleRuleElem.elementsByTagName( QStringLiteral(
"sld:RasterSymbolizer" ) );
1622 if ( elements.size() != 0 )
1625 QDomElement rasterSymbolizerElem = elements.at( 0 ).toElement();
1628 auto vendorOptionWriter = [&]( QString
name, QString value )
1630 QDomElement vendorOptionElem = doc.createElement( QStringLiteral(
"sld:VendorOption" ) );
1631 vendorOptionElem.setAttribute( QStringLiteral(
"name" ),
name );
1632 vendorOptionElem.appendChild( doc.createTextNode( value ) );
1633 rasterSymbolizerElem.appendChild( vendorOptionElem );
1638 vendorOptionWriter( QStringLiteral(
"invertColors" ), QString::number( 1 ) );
1648 property = QStringLiteral(
"lightness" );
1651 property = QStringLiteral(
"luminosity" );
1654 property = QStringLiteral(
"average" );
1660 if ( !property.isEmpty() )
1661 vendorOptionWriter( QStringLiteral(
"grayScale" ), property );
1667 vendorOptionWriter( QStringLiteral(
"colorizeOn" ), QString::number(
hueSaturationFilter()->colorizeOn() ) );
1668 vendorOptionWriter( QStringLiteral(
"colorizeRed" ), QString::number(
hueSaturationFilter()->colorizeColor().red() ) );
1669 vendorOptionWriter( QStringLiteral(
"colorizeGreen" ), QString::number(
hueSaturationFilter()->colorizeColor().green() ) );
1670 vendorOptionWriter( QStringLiteral(
"colorizeBlue" ), QString::number(
hueSaturationFilter()->colorizeColor().blue() ) );
1672 vendorOptionWriter( QStringLiteral(
"colorizeStrength" ), QString::number(
hueSaturationFilter()->colorizeStrength() / 100.0 ) );
1673 vendorOptionWriter( QStringLiteral(
"saturation" ), QString::number(
hueSaturationFilter()->colorizeColor().saturationF() ) );
1682 const double sF = ( s - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
1683 vendorOptionWriter( QStringLiteral(
"saturation" ), QString::number( sF ) );
1692 const double bF = ( b - ( -255.0 ) ) / ( 255.0 - ( -255.0 ) );
1693 vendorOptionWriter( QStringLiteral(
"brightness" ), QString::number( bF ) );
1701 const double cF = (
c - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
1702 vendorOptionWriter( QStringLiteral(
"contrast" ), QString::number( cF ) );
1716 if ( newProps.contains( QStringLiteral(
"contrast" ) ) )
1719 double contrast = newProps[ QStringLiteral(
"contrast" ) ].toDouble();
1720 double percentage = ( contrast - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
1721 if ( percentage <= 0.5 )
1724 gamma = percentage / 0.5;
1731 QDomElement globalContrastEnhancementElem = doc.createElement( QStringLiteral(
"sld:ContrastEnhancement" ) );
1732 rasterSymolizerElem.appendChild( globalContrastEnhancementElem );
1734 QDomElement gammaValueElem = doc.createElement( QStringLiteral(
"sld:GammaValue" ) );
1735 gammaValueElem.appendChild( doc.createTextNode( QString::number( gamma ) ) );
1736 globalContrastEnhancementElem.appendChild( gammaValueElem );
1760 return mPipe->renderer();
1765 return mPipe->resampleFilter();
1770 return mPipe->brightnessFilter();
1775 return mPipe->hueSaturationFilter();
1789 if ( mDataProvider )
1796 if ( ! mDataProvider )
1797 return QStringList();
1805 QImage image( size, format );
1810 if ( image.format() == QImage::Format_Indexed8 )
1812 image.setColor( 0, bgColor.rgba() );
1817 image.fill( bgColor );
1822 double mapUnitsPerPixel;
1828 mapUnitsPerPixel =
extent.
width() / image.width();
1829 y = ( image.height() -
extent.
height() / mapUnitsPerPixel ) / 2;
1834 x = ( image.width() -
extent.
width() / mapUnitsPerPixel ) / 2;
1837 const double pixelWidth =
extent.
width() / mapUnitsPerPixel;
1838 const double pixelHeight =
extent.
height() / mapUnitsPerPixel;
1842 rasterViewPort->
mWidth = image.width();
1843 rasterViewPort->
mHeight = image.height();
1851 QPainter *painter =
new QPainter( &image );
1852 draw( painter, rasterViewPort, mapToPixel );
1853 delete rasterViewPort;
1875 Q_UNUSED( errorMessage )
1878 QDomElement rasterRendererElem;
1880 const QDomElement layerElement = layer_node.toElement();
1887 QDomNode pipeNode = layer_node.firstChildElement( QStringLiteral(
"pipe" ) );
1888 if ( pipeNode.isNull() )
1890 pipeNode = layer_node;
1894 if ( !layer_node.firstChildElement( QStringLiteral(
"rasterproperties" ) ).isNull() )
1897 QDomNode layerNodeCopy = layer_node.cloneNode();
1898 QDomDocument doc = layerNodeCopy.ownerDocument();
1899 QDomElement rasterPropertiesElem = layerNodeCopy.firstChildElement( QStringLiteral(
"rasterproperties" ) );
1902 rasterRendererElem = layerNodeCopy.firstChildElement( QStringLiteral(
"rasterrenderer" ) );
1907 rasterRendererElem = pipeNode.firstChildElement( QStringLiteral(
"rasterrenderer" ) );
1910 if ( !rasterRendererElem.isNull() )
1912 const QString rendererType = rasterRendererElem.attribute( QStringLiteral(
"type" ) );
1926 const QDomElement brightnessElem = pipeNode.firstChildElement( QStringLiteral(
"brightnesscontrast" ) );
1927 if ( !brightnessElem.isNull() )
1937 const QDomElement hueSaturationElem = pipeNode.firstChildElement( QStringLiteral(
"huesaturation" ) );
1938 if ( !hueSaturationElem.isNull() )
1948 const QDomElement resampleElem = pipeNode.firstChildElement( QStringLiteral(
"rasterresampler" ) );
1949 if ( !resampleElem.isNull() )
1955 if ( mDataProvider )
1957 const QDomElement providerElem = pipeNode.firstChildElement( QStringLiteral(
"provider" ) );
1958 if ( !providerElem.isNull() )
1960 mDataProvider->
readXml( providerElem );
1965 const QDomNode resamplingStageElement = pipeNode.namedItem( QStringLiteral(
"resamplingStage" ) );
1966 if ( !resamplingStageElement.isNull() )
1968 const QDomElement e = resamplingStageElement.toElement();
1969 if ( e.text() == QLatin1String(
"provider" ) )
1971 else if ( e.text() == QLatin1String(
"resamplingFilter" ) )
1976 const QDomNode blendModeNode = layer_node.namedItem( QStringLiteral(
"blendMode" ) );
1977 if ( !blendModeNode.isNull() )
1979 const QDomElement e = blendModeNode.toElement();
1983 const QDomElement elemDataDefinedProperties = layer_node.firstChildElement( QStringLiteral(
"pipe-data-defined-properties" ) );
1984 if ( !elemDataDefinedProperties.isNull() )
1997 return readSymbology( node, errorMessage, context, categories );
2006 const QDomNode pkeyNode = layer_node.namedItem( QStringLiteral(
"provider" ) );
2008 if ( pkeyNode.isNull() )
2014 const QDomElement pkeyElt = pkeyNode.toElement();
2028 const QDomNode rpNode = layer_node.namedItem( QStringLiteral(
"rasterproperties" ) );
2034 if ( !
mDataSource.contains( QLatin1String(
"crs=" ) ) && !
mDataSource.contains( QLatin1String(
"format=" ) ) )
2036 QgsDebugMsgLevel( QStringLiteral(
"Old WMS URI format detected -> adding params" ), 4 );
2039 QDomElement layerElement = rpNode.firstChildElement( QStringLiteral(
"wmsSublayer" ) );
2040 while ( !layerElement.isNull() )
2045 uri.
setParam( QStringLiteral(
"layers" ), layerElement.namedItem( QStringLiteral(
"name" ) ).toElement().text() );
2048 uri.
setParam( QStringLiteral(
"styles" ), layerElement.namedItem( QStringLiteral(
"style" ) ).toElement().text() );
2050 layerElement = layerElement.nextSiblingElement( QStringLiteral(
"wmsSublayer" ) );
2054 uri.
setParam( QStringLiteral(
"format" ), rpNode.namedItem( QStringLiteral(
"wmsFormat" ) ).toElement().text() );
2058 uri.
setParam( QStringLiteral(
"crs" ),
crs().authid() );
2067 QgsDataProvider::ReadFlags
flags = QgsDataProvider::ReadFlags();
2079 const QDomNode extentNode = layer_node.namedItem( QStringLiteral(
"extent" ) );
2080 if ( !extentNode.isNull() )
2095 mOriginalStyleElement = layer_node.namedItem( QStringLiteral(
"originalStyle" ) ).firstChildElement();
2096 if ( mOriginalStyleElement.isNull() )
2097 mOriginalStyleElement = layer_node.toElement();
2098 mOriginalStyleDocument = layer_node.ownerDocument();
2100 if ( ! mDataProvider )
2124 QDomNode stampNode = layer_node.namedItem(
"timestamp" );
2125 if ( !stampNode.isNull() )
2127 QDateTime stamp = QDateTime::fromString( stampNode.toElement().text(), Qt::ISODate );
2129 if ( stamp < mDataProvider->dataTimestamp() )
2132 closeDataProvider();
2135 if ( !
isValid() )
return false;
2141 const QDomElement noDataElement = layer_node.firstChildElement( QStringLiteral(
"noData" ) );
2143 const QDomNodeList noDataBandList = noDataElement.elementsByTagName( QStringLiteral(
"noDataList" ) );
2145 for (
int i = 0; i < noDataBandList.size(); ++i )
2147 const QDomElement bandElement = noDataBandList.at( i ).toElement();
2149 const int bandNo = bandElement.attribute( QStringLiteral(
"bandNo" ) ).toInt( &ok );
2151 if ( ok && ( bandNo > 0 ) && ( bandNo <= mDataProvider->
bandCount() ) )
2153 mDataProvider->
setUseSourceNoDataValue( bandNo, bandElement.attribute( QStringLiteral(
"useSrcNoData" ) ).toInt() );
2156 const QDomNodeList rangeList = bandElement.elementsByTagName( QStringLiteral(
"noDataRange" ) );
2158 myNoDataRangeList.reserve( rangeList.size() );
2159 for (
int j = 0; j < rangeList.size(); ++j )
2161 const QDomElement rangeElement = rangeList.at( j ).toElement();
2162 const QgsRasterRange myNoDataRange( rangeElement.attribute( QStringLiteral(
"min" ) ).toDouble(),
2163 rangeElement.attribute( QStringLiteral(
"max" ) ).toDouble() );
2164 QgsDebugMsgLevel( QStringLiteral(
"min = %1 %2" ).arg( rangeElement.attribute(
"min" ) ).arg( myNoDataRange.
min() ), 4 );
2165 myNoDataRangeList << myNoDataRange;
2179 Q_UNUSED( errorMessage )
2182 QDomElement layerElement = layer_node.toElement();
2187 QDomElement pipeElement = document.createElement( QStringLiteral(
"pipe" ) );
2189 for (
int i = 0; i < mPipe->size(); i++ )
2192 if ( !interface )
continue;
2193 interface->writeXml( document, pipeElement );
2196 QDomElement elemDataDefinedProperties = document.createElement( QStringLiteral(
"pipe-data-defined-properties" ) );
2198 layer_node.appendChild( elemDataDefinedProperties );
2200 QDomElement resamplingStageElement = document.createElement( QStringLiteral(
"resamplingStage" ) );
2202 resamplingStageElement.appendChild( resamplingStageText );
2203 pipeElement.appendChild( resamplingStageElement );
2205 layer_node.appendChild( pipeElement );
2207 if ( !
isValid() && !mOriginalStyleElement.isNull() )
2209 QDomElement originalStyleElement = document.createElement( QStringLiteral(
"originalStyle" ) );
2210 originalStyleElement.appendChild( mOriginalStyleElement );
2211 layer_node.appendChild( originalStyleElement );
2215 QDomElement blendModeElement = document.createElement( QStringLiteral(
"blendMode" ) );
2217 blendModeElement.appendChild( blendModeText );
2218 layer_node.appendChild( blendModeElement );
2226 return writeSymbology( node, doc, errorMessage, context, categories );
2234 QDomDocument &document,
2237 if ( !mDataProvider )
2242 QDomElement mapLayerNode = layer_node.toElement();
2244 if ( mapLayerNode.isNull() ||
"maplayer" != mapLayerNode.nodeName() )
2254 QDomElement provider = document.createElement( QStringLiteral(
"provider" ) );
2255 const QDomText providerText = document.createTextNode(
mProviderKey );
2256 provider.appendChild( providerText );
2257 layer_node.appendChild( provider );
2260 QDomElement noData = document.createElement( QStringLiteral(
"noData" ) );
2262 for (
int bandNo = 1; bandNo <= mDataProvider->
bandCount(); bandNo++ )
2264 QDomElement noDataRangeList = document.createElement( QStringLiteral(
"noDataList" ) );
2265 noDataRangeList.setAttribute( QStringLiteral(
"bandNo" ), bandNo );
2266 noDataRangeList.setAttribute( QStringLiteral(
"useSrcNoData" ), mDataProvider->
useSourceNoDataValue( bandNo ) );
2268 const auto constUserNoDataValues = mDataProvider->
userNoDataValues( bandNo );
2271 QDomElement noDataRange = document.createElement( QStringLiteral(
"noDataRange" ) );
2275 noDataRangeList.appendChild( noDataRange );
2278 noData.appendChild( noDataRangeList );
2281 if ( noData.hasChildNodes() )
2283 layer_node.appendChild( noData );
2292 return writeSymbology( layer_node, document, errorMsg, context );
2296static bool _parseGpkgColons(
const QString &src, QString &filename, QString &tablename )
2301 QStringList lst = src.split(
':' );
2302 if ( lst.count() != 3 && lst.count() != 4 )
2305 tablename = lst.last();
2306 if ( lst.count() == 3 )
2311 else if ( lst.count() == 4 && lst[1].count() == 1 && ( lst[2][0] ==
'/' || lst[2][0] ==
'\\' ) )
2314 filename = lst[1] +
":" + lst[2];
2324 bool handled =
false;
2329 if ( src.startsWith( QLatin1String(
"NETCDF:" ) ) )
2333 const QRegularExpression netcdfEncodedRegExp( QRegularExpression::anchoredPattern(
"NETCDF:(.+):([^:]+)" ) );
2334 const QRegularExpressionMatch match = netcdfEncodedRegExp.match( src );
2335 if ( match.hasMatch() )
2337 QString filename = match.captured( 1 );
2338 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2339 filename = filename.mid( 1, filename.length() - 2 );
2344 else if ( src.startsWith( QLatin1String(
"GPKG:" ) ) )
2347 QString filename, tablename;
2348 if ( _parseGpkgColons( src, filename, tablename ) )
2351 src = QStringLiteral(
"GPKG:%1:%2" ).arg( filename, tablename );
2355 else if ( src.startsWith( QLatin1String(
"HDF4_SDS:" ) ) )
2359 const QRegularExpression hdf4EncodedRegExp( QRegularExpression::anchoredPattern(
"HDF4_SDS:([^:]+):(.+):([^:]+)" ) );
2360 const QRegularExpressionMatch match = hdf4EncodedRegExp.match( src );
2361 if ( match.hasMatch() )
2363 QString filename = match.captured( 2 );
2364 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2365 filename = filename.mid( 1, filename.length() - 2 );
2366 src =
"HDF4_SDS:" + match.captured( 1 ) +
":\"" + context.
pathResolver().
writePath( filename ) +
"\":" + match.captured( 3 );
2370 else if ( src.startsWith( QLatin1String(
"HDF5:" ) ) )
2374 const QRegularExpression hdf5EncodedRegExp( QRegularExpression::anchoredPattern(
"HDF5:(.+):([^:]+)" ) );
2375 const QRegularExpressionMatch match = hdf5EncodedRegExp.match( src );
2376 if ( match.hasMatch() )
2378 QString filename = match.captured( 1 );
2379 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2380 filename = filename.mid( 1, filename.length() - 2 );
2385 else if ( src.contains( QRegularExpression(
"^(NITF_IM|RADARSAT_2_CALIB):" ) ) )
2389 const QRegularExpression nitfRadarsatEncodedRegExp( QRegularExpression::anchoredPattern(
"([^:]+):([^:]+):(.+)" ) );
2390 const QRegularExpressionMatch match = nitfRadarsatEncodedRegExp.match( src );
2391 if ( match.hasMatch() )
2393 src = match.captured( 1 ) +
':' + match.captured( 2 ) +
':' + context.
pathResolver().
writePath( match.captured( 3 ) );
2403 const QUrl srcUrl( uri.
param( QStringLiteral(
"url" ) ) );
2404 if ( srcUrl.isLocalFile() )
2409 uri.
setParam( QStringLiteral(
"url" ), QUrl::fromLocalFile( relSrcUrl ).toString() );
2436 if ( provider == QLatin1String(
"wms" ) )
2450 if ( !src.contains( QLatin1String(
"type=" ) ) &&
2451 !src.contains( QLatin1String(
"crs=" ) ) && !src.contains( QLatin1String(
"format=" ) ) )
2453 QgsDebugMsgLevel( QStringLiteral(
"Old WMS URI format detected -> converting to new format" ), 2 );
2455 if ( !src.startsWith( QLatin1String(
"http:" ) ) )
2457 const QStringList parts = src.split(
',' );
2458 QStringListIterator iter( parts );
2459 while ( iter.hasNext() )
2461 const QString item = iter.next();
2462 if ( item.startsWith( QLatin1String(
"username=" ) ) )
2466 else if ( item.startsWith( QLatin1String(
"password=" ) ) )
2470 else if ( item.startsWith( QLatin1String(
"tiled=" ) ) )
2476 QStringList params = item.mid( 6 ).split(
';' );
2478 if ( params.size() == 2 )
2480 uri.
setParam( QStringLiteral(
"maxWidth" ), params.takeFirst() );
2481 uri.
setParam( QStringLiteral(
"maxHeight" ), params.takeFirst() );
2483 else if ( params.size() > 2 )
2487 uri.
setParam( QStringLiteral(
"tileMatrixSet" ), QString() );
2490 else if ( item.startsWith( QLatin1String(
"featureCount=" ) ) )
2492 uri.
setParam( QStringLiteral(
"featureCount" ), item.mid( 13 ) );
2494 else if ( item.startsWith( QLatin1String(
"url=" ) ) )
2496 uri.
setParam( QStringLiteral(
"url" ), item.mid( 4 ) );
2498 else if ( item.startsWith( QLatin1String(
"ignoreUrl=" ) ) )
2500 uri.
setParam( QStringLiteral(
"ignoreUrl" ), item.mid( 10 ).split(
';' ) );
2506 uri.
setParam( QStringLiteral(
"url" ), src );
2517 const QUrl srcUrl( uri.
param( QStringLiteral(
"url" ) ) );
2518 if ( srcUrl.isLocalFile() )
2522 uri.
setParam( QStringLiteral(
"url" ), QUrl::fromLocalFile( absSrcUrl ).toString() );
2529 bool handled =
false;
2531 if ( provider == QLatin1String(
"gdal" ) )
2533 if ( src.startsWith( QLatin1String(
"NETCDF:" ) ) )
2537 const QRegularExpression netcdfDecodedRegExp( QRegularExpression::anchoredPattern(
"NETCDF:(.+):([^:]+)" ) );
2538 const QRegularExpressionMatch match = netcdfDecodedRegExp.match( src );
2539 if ( match.hasMatch() )
2541 QString filename = match.captured( 1 );
2542 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2543 filename = filename.mid( 1, filename.length() - 2 );
2548 else if ( src.startsWith( QLatin1String(
"GPKG:" ) ) )
2551 QString filename, tablename;
2552 if ( _parseGpkgColons( src, filename, tablename ) )
2555 src = QStringLiteral(
"GPKG:%1:%2" ).arg( filename, tablename );
2559 else if ( src.startsWith( QLatin1String(
"HDF4_SDS:" ) ) )
2563 const QRegularExpression hdf4DecodedRegExp( QRegularExpression::anchoredPattern(
"HDF4_SDS:([^:]+):(.+):([^:]+)" ) );
2564 const QRegularExpressionMatch match = hdf4DecodedRegExp.match( src );
2565 if ( match.hasMatch() )
2567 QString filename = match.captured( 2 );
2568 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2569 filename = filename.mid( 1, filename.length() - 2 );
2570 src =
"HDF4_SDS:" + match.captured( 1 ) +
":\"" + context.
pathResolver().
readPath( filename ) +
"\":" + match.captured( 3 );
2574 else if ( src.startsWith( QLatin1String(
"HDF5:" ) ) )
2578 const QRegularExpression hdf5DecodedRegExp( QRegularExpression::anchoredPattern(
"HDF5:(.+):([^:]+)" ) );
2579 const QRegularExpressionMatch match = hdf5DecodedRegExp.match( src );
2580 if ( match.hasMatch() )
2582 QString filename = match.captured( 1 );
2583 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2584 filename = filename.mid( 1, filename.length() - 2 );
2589 else if ( src.contains( QRegularExpression(
"^(NITF_IM|RADARSAT_2_CALIB):" ) ) )
2593 const QRegularExpression niftRadarsatDecodedRegExp( QRegularExpression::anchoredPattern(
"([^:]+):([^:]+):(.+)" ) );
2594 const QRegularExpressionMatch match = niftRadarsatDecodedRegExp.match( src );
2595 if ( match.hasMatch() )
2597 src = match.captured( 1 ) +
':' + match.captured( 2 ) +
':' + context.
pathResolver().
readPath( match.captured( 3 ) );
2603 if ( provider == QLatin1String(
"virtualraster" ) )
2624 if ( !mDataProvider )
return 0;
2625 return mDataProvider->
xSize();
2630 if ( !mDataProvider )
return 0;
2631 return mDataProvider->
ySize();
2636 mPipe->setResamplingStage( stage );
2641 return mPipe->resamplingStage();
2649bool QgsRasterLayer::update()
2656 closeDataProvider();
2659 QgsDataProvider::ReadFlags
flags = QgsDataProvider::ReadFlags();
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.
@ IsBasemapSource
Associated source should be considered a 'basemap' layer. See Qgis::MapLayerProperty::IsBasemapLayer.
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.
@ 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)
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 and new RGB value based on one input value.
@ Interpolated
Interpolates the color between two class breaks linearly.
@ Discrete
Assigns the color of the higher class for every pixel between two class breaks.
void classifyColorRamp(int classes=0, int band=-1, const QgsRectangle &extent=QgsRectangle(), QgsRasterInterface *input=nullptr)
Classify color ramp shader.
void setColorRampItemList(const QList< QgsColorRampShader::ColorRampItem > &list)
Sets a custom colormap.
void setColorRampType(QgsColorRampShader::Type colorRampType)
Sets the color ramp type.
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).
@ WKT_PREFERRED
Preferred format, matching the most recent WKT ISO standard. Currently an alias to WKT2_2019,...
Contains information about the context in which a coordinate transform is executed.
Abstract base class for spatial data provider implementations.
virtual void setLayerOrder(const QStringList &layers)
Reorder the list of layer names to be rendered by this provider (in order from bottom to top)
@ FlagLoadDefaultStyle
Reset the layer's style to the default for the datasource.
@ FlagTrustDataSource
Trust datasource config (primary key unicity, geometry type and srid, etc). Improves provider load ti...
@ ForceReadOnly
Open layer in a read-only mode (since QGIS 3.28)
@ SkipGetExtent
Skip the extent from provider.
QgsCoordinateTransformContext transformContext() const
Returns data provider coordinate transform context.
virtual Qgis::DataProviderFlags flags() const
Returns the generic data provider flags.
virtual QgsCoordinateReferenceSystem crs() const =0
Returns the coordinate system for the data source.
virtual QString subsetString() const
Returns the subset definition string (typically sql) currently in use by the layer and used by the pr...
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 supportsSubsetString() const
Returns true if the provider supports setting of subset strings.
virtual QString dataSourceUri(bool expandAuthConfig=false) const
Gets the data source specification.
virtual bool setSubsetString(const QString &subset, bool updateFeatureCount=true)
Set the subset string used to create a subset of features in the layer.
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.
int removeParam(const QString &key)
Removes a generic parameter by key.
void setEncodedUri(const QByteArray &uri)
Sets the complete encoded uri.
void setUsername(const QString &username)
Sets the username for the URI.
QString param(const QString &key) const
Returns a generic parameter value corresponding to the specified key.
void setParam(const QString &key, const QString &value)
Sets a generic parameter value on the URI.
void setPassword(const QString &password)
Sets the password for 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.
static QString typeToString(QgsMapLayerType 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.
void writeXml(QDomNode &layer_node, QDomDocument &document) const
Saves server properties to xml under the layer node.
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.
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...
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
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)
void readCustomProperties(const QDomNode &layerNode, const QString &keyStartsWith=QString())
Read custom properties from project file.
virtual void setMetadata(const QgsLayerMetadata &metadata)
Sets the layer's metadata store.
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...
void rendererChanged()
Signal emitted when renderer is changed.
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.
@ 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,...
@ FlagForceReadOnly
Force open as read only.
@ 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.
void setDataSource(const QString &dataSource, const QString &baseName, const QString &provider, bool loadDefaultStyleFlag=false)
Updates the data source of the layer.
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 setProviderType(const QString &providerType)
Sets the providerType (provider key)
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 QgsPainting::BlendMode getBlendModeEnum(QPainter::CompositionMode blendMode)
Returns a BlendMode corresponding to a QPainter::CompositionMode.
static QPainter::CompositionMode getCompositionMode(QgsPainting::BlendMode blendMode)
Returns a QPainter::CompositionMode corresponding to a BlendMode.
BlendMode
Blending modes enum defining the available composition modes that can be used when rendering a layer.
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...
static QgsProviderRegistry * instance(const QString &pluginPath=QString())
Means of accessing canonical single instance.
The RasterBandStats struct is a container for statistics about a single raster band.
int statsGathered
Collected statistics.
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.
double maximumValue
The maximum cell value in the raster band.
static int typeSize(Qgis::DataType dataType) SIP_HOLDGIL
Returns the size in bytes for the specified dataType.
static QString printValue(double value)
Print double value with all necessary significant digits.
Base class for raster data providers.
static QString encodeVirtualRasterProviderUri(const VirtualRasterParameters &parts)
Encodes the URI starting from the struct .
virtual bool useSourceNoDataValue(int bandNo) const
Returns the source nodata value usage.
static QgsRasterDataProvider::VirtualRasterParameters decodeVirtualRasterProviderUri(const QString &uri, bool *ok=nullptr)
Decodes the URI returning a struct with all the parameters for QgsVirtualRasterProvider class.
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.
void readXml(const QDomElement &filterElem) override
Sets base class members from xml. Usually called from create() methods of subclasses.
virtual QgsRasterDataProvider::ProviderCapabilities providerCapabilities() const
Returns flags containing the supported capabilities of the data provider.
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.
QStringList subLayers() const override
Returns the sublayers of this layer - useful for providers that manage their own layers,...
static QString identifyFormatName(QgsRaster::IdentifyFormat format)
@ ReadLayerMetadata
Provider can read layer metadata from data store. Since QGIS 3.0. See QgsDataProvider::layerMetadata(...
@ ProviderHintBenefitsFromResampling
Provider benefits from resampling and should apply user default resampling settings (since QGIS 3....
@ ProviderHintCanPerformProviderResampling
Provider can perform resampling (to be opposed to post rendering resampling) (since QGIS 3....
QDateTime dataTimestamp() const override
Current time stamp of data source.
virtual QString htmlMetadata()=0
Returns metadata in a format suitable for feeding directly into a subset of the GUI raster properties...
virtual QList< QgsColorRampShader::ColorRampItem > colorTable(int bandNo) const
virtual int colorInterpretation(int bandNo) const
Returns data type for the band specified by number.
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.
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.
@ IdentifyValue
Numerical values.
@ IdentifyFeature
WMS GML -> feature.
@ Size
Original data source size (and thus resolution) is known, it is not always available,...
virtual int xSize() const
Gets raster size.
virtual QString generateBandName(int bandNumber) const
helper function to create zero padded band names
virtual int bandCount() const =0
Gets number of bands.
virtual QgsRasterBandStats bandStatistics(int bandNo, int stats=QgsRasterBandStats::All, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0, QgsRasterBlockFeedback *feedback=nullptr)
Returns the band statistics.
virtual bool hasStatistics(int bandNo, int stats=QgsRasterBandStats::All, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0)
Returns true if histogram is available (cached, already calculated).
virtual int capabilities() const
Returns a bitmask containing the supported capabilities.
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.
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.
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)
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
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.
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.
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.
QgsRasterPipe * pipe()
Returns the raster pipe.
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.
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
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
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
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.
bool set(QgsRasterInterface *interface)
Inserts a new known interface in default place or replace interface of the same role if it already ex...
static QgsPropertiesDefinition propertyDefinitions()
Returns the definitions for data defined properties available for use in raster pipes.
void setDataDefinedProperties(const QgsPropertyCollection &collection)
Sets the pipe's property collection, used for data defined overrides.
QgsRasterProjector implements approximate projection support for it calculates grid of points in sour...
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.
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()
@ IdentifyFormatUndefined
@ PaletteIndex
Paletted (see associated color table)
@ AlphaBand
Alpha (0=transparent, 255=opaque)
@ ContinuousPalette
Continuous palette, QGIS addition, GRASS.
DrawingStyle
This enumerator describes the different kinds of drawing we can do.
@ SingleBandColorDataStyle
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 height() const SIP_HOLDGIL
Returns the height of the rectangle.
double width() const SIP_HOLDGIL
Returns the width of the rectangle.
bool isEmpty() const
Returns true if the rectangle is empty.
Contains information about the context of a rendering operation.
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.
Raster renderer pipe for single band pseudocolor.
void setClassificationMin(double min)
int band() const
Returns the band used by the renderer.
void setShader(QgsRasterShader *shader)
Takes ownership of the shader.
void setClassificationMax(double max)
QgsRasterShader * shader()
Returns the raster shader.
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)
QgsMapLayerType
Types of layers that can be added to a map.
@ RasterLayer
Raster layer.
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
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)
QgsDataProvider * classFactoryFunction_t(const QString *, const QgsDataProvider::ProviderOptions &options)
QList< QPair< QString, QColor > > QgsLegendColorList
QList< QgsRasterRange > QgsRasterRangeList
Setting options for creating vector data providers.
Struct that stores the information about the parameters that should be given to the QgsVirtualRasterP...
QList< QgsRasterDataProvider::VirtualRasterInputLayers > rInputLayers
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.