55 #include "qgsgdalprovider.h"
68 #include <QApplication>
71 #include <QDomElement>
76 #include <QFontMetrics>
83 #include <QRegularExpression>
87 #define ERR(message) QGS_ERROR_MESSAGE(message,"Raster layer")
107 , QSTRING_NOT_SET( QStringLiteral(
"Not Set" ) )
108 , TRSTRING_NOT_SET( tr(
"Not Set" ) )
118 const QString &baseName,
119 const QString &providerKey,
123 , QSTRING_NOT_SET( QStringLiteral(
"Not Set" ) )
124 , TRSTRING_NOT_SET( tr(
"Not Set" ) )
134 QgsDataProvider::ReadFlags providerFlags = QgsDataProvider::ReadFlags();
139 setDataSource( uri, baseName, providerKey, providerOptions, providerFlags );
167 for (
int i = 1; i < mPipe->size(); i++ )
169 if ( mPipe->at( i ) )
170 layer->
pipe()->
set( mPipe->at( i )->clone() );
185 const bool myIsValid = QgsGdalProvider::isValidRasterFileName( fileNameQString, retErrMsg );
200 const QFileInfo fi(
name );
206 t = fi.lastModified();
229 if ( !mDataProvider )
return 0;
235 if ( !mDataProvider )
return QString();
246 return mDataProvider;
251 return mDataProvider;
283 bool restoreOldResamplingStage =
false;
291 if ( mDataProvider !=
nullptr &&
296 restoreOldResamplingStage =
true;
305 drawer.
draw( theQPainter, rasterViewPort, qgsMapToPixel );
307 if ( restoreOldResamplingStage )
312 QgsDebugMsgLevel( QStringLiteral(
"total raster draw time (ms): %1" ).arg( time.elapsed(), 5 ), 4 );
323 if ( !mDataProvider )
327 QString myMetadata = QStringLiteral(
"<html><head></head>\n<body>\n" );
332 myMetadata += QStringLiteral(
"<h1>" ) + tr(
"Information from provider" ) + QStringLiteral(
"</h1>\n<hr>\n" ) + QStringLiteral(
"<table class=\"list-view\">\n" );
334 myMetadata += QStringLiteral(
"\n" ) %
336 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Extent" ) % QStringLiteral(
"</td><td>" ) %
extent().
toString() % QStringLiteral(
"</td></tr>\n" ) %
339 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Width" ) % QStringLiteral(
"</td><td>" );
341 myMetadata += QString::number(
width() );
343 myMetadata += tr(
"n/a" );
344 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
347 QStringLiteral(
"<tr><td class=\"highlight\">" ) + tr(
"Height" ) + QStringLiteral(
"</td><td>" );
349 myMetadata += QString::number(
height() );
351 myMetadata += tr(
"n/a" );
352 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
355 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Data type" ) % QStringLiteral(
"</td><td>" );
360 myMetadata += tr(
"Byte - Eight bit unsigned integer" );
363 myMetadata += tr(
"UInt16 - Sixteen bit unsigned integer " );
366 myMetadata += tr(
"Int16 - Sixteen bit signed integer " );
369 myMetadata += tr(
"UInt32 - Thirty two bit unsigned integer " );
372 myMetadata += tr(
"Int32 - Thirty two bit signed integer " );
375 myMetadata += tr(
"Float32 - Thirty two bit floating point " );
378 myMetadata += tr(
"Float64 - Sixty four bit floating point " );
381 myMetadata += tr(
"CInt16 - Complex Int16 " );
384 myMetadata += tr(
"CInt32 - Complex Int32 " );
387 myMetadata += tr(
"CFloat32 - Complex Float32 " );
390 myMetadata += tr(
"CFloat64 - Complex Float64 " );
393 myMetadata += tr(
"Could not determine raster data type." );
395 myMetadata += QStringLiteral(
"</td></tr>\n" ) %
401 QStringLiteral(
"</table>\n<br><br>" );
407 myMetadata += QStringLiteral(
"<h1>" ) % tr(
"Identification" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
409 QStringLiteral(
"<br><br>\n" ) %
412 QStringLiteral(
"<h1>" ) % tr(
"Extent" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
414 QStringLiteral(
"<br><br>\n" ) %
417 QStringLiteral(
"<h1>" ) % tr(
"Access" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
419 QStringLiteral(
"<br><br>\n" ) %
422 QStringLiteral(
"</table>\n<br><br><h1>" ) % tr(
"Bands" ) % QStringLiteral(
"</h1>\n<hr>\n<table class=\"list-view\">\n" ) %
425 QStringLiteral(
"<tr><td class=\"highlight\">" ) % tr(
"Band count" ) % QStringLiteral(
"</td><td>" ) % QString::number(
bandCount() ) % QStringLiteral(
"</td></tr>\n" );
428 myMetadata += QStringLiteral(
"</table>\n<br><table width=\"100%\" class=\"tabular-view\">\n" ) %
429 QStringLiteral(
"<tr><th>" ) % tr(
"Number" ) % QStringLiteral(
"</th><th>" ) % tr(
"Band" ) % QStringLiteral(
"</th><th>" ) % tr(
"No-Data" ) % QStringLiteral(
"</th><th>" ) %
430 tr(
"Min" ) % QStringLiteral(
"</th><th>" ) % tr(
"Max" ) % QStringLiteral(
"</th></tr>\n" );
437 rowClass = QStringLiteral(
"class=\"odd-row\"" );
439 myMetadata += QStringLiteral(
"<tr " ) % rowClass % QStringLiteral(
"><td>" ) % QString::number( i ) % QStringLiteral(
"</td><td>" ) %
bandName( i ) % QStringLiteral(
"</td><td>" );
442 myMetadata += QString::number(
dataProvider()->sourceNoDataValue( i ) );
444 myMetadata += tr(
"n/a" );
445 myMetadata += QLatin1String(
"</td>" );
450 myMetadata += QStringLiteral(
"<td>" ) % QString::number( myRasterBandStats.
minimumValue,
'f', 10 ) % QStringLiteral(
"</td>" ) %
451 QStringLiteral(
"<td>" ) % QString::number( myRasterBandStats.
maximumValue,
'f', 10 ) % QStringLiteral(
"</td>" );
455 myMetadata += QStringLiteral(
"<td>" ) % tr(
"n/a" ) % QStringLiteral(
"</td><td>" ) % tr(
"n/a" ) % QStringLiteral(
"</td>" );
458 myMetadata += QLatin1String(
"</tr>\n" );
462 myMetadata += QStringLiteral(
"</table>\n<br><br>" ) %
465 QStringLiteral(
"<h1>" ) % tr(
"Contacts" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
467 QStringLiteral(
"<br><br>\n" ) %
470 QStringLiteral(
"<h1>" ) % tr(
"References" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
472 QStringLiteral(
"<br><br>\n" ) %
475 QStringLiteral(
"<h1>" ) % tr(
"History" ) % QStringLiteral(
"</h1>\n<hr>\n" ) %
477 QStringLiteral(
"<br><br>\n" ) %
479 QStringLiteral(
"\n</body>\n</html>\n" );
490 if ( mDataProvider &&
495 const QList<QgsColorRampShader::ColorRampItem> myColorRampItemList = mDataProvider->
colorTable( bandNumber );
496 if ( !myColorRampItemList.isEmpty() )
502 const int mySize = 100;
503 QPixmap myPalettePixmap( mySize, mySize );
504 QPainter myQPainter( &myPalettePixmap );
506 QImage myQImage = QImage( mySize, mySize, QImage::Format_RGB32 );
508 myPalettePixmap.fill();
510 const double myStep = (
static_cast< double >( myColorRampItemList.size() ) - 1 ) /
static_cast< double >( mySize * mySize );
511 double myValue = 0.0;
512 for (
int myRow = 0; myRow < mySize; myRow++ )
514 QRgb *myLineBuffer =
reinterpret_cast< QRgb *
>( myQImage.scanLine( myRow ) );
515 for (
int myCol = 0; myCol < mySize; myCol++ )
517 myValue = myStep *
static_cast< double >( myCol + myRow * mySize );
519 myShader.
shade( myValue, &c1, &c2, &c3, &c4 );
520 myLineBuffer[ myCol ] = qRgba( c1, c2, c3, c4 );
524 myQPainter.drawImage( 0, 0, myQImage );
525 return myPalettePixmap;
527 const QPixmap myNullPixmap;
533 const QPixmap myNullPixmap;
551 if ( mDataProvider &&
561 if ( mDataProvider &&
571 if ( !mPipe->renderer() || mPipe->renderer()->opacity() ==
opacity )
574 mPipe->renderer()->setOpacity(
opacity );
581 return mPipe->renderer() ? mPipe->renderer()->opacity() : 1.0;
584 void QgsRasterLayer::init()
602 mPipe->remove( mDataProvider );
603 mDataProvider =
nullptr;
617 std::unique_ptr< QgsScopedRuntimeProfile > profile;
619 profile = std::make_unique< QgsScopedRuntimeProfile >( tr(
"Create %1 provider" ).arg( provider ), QStringLiteral(
"projectload" ) );
622 if ( !mDataProvider )
629 mDataProvider->setParent(
this );
632 mPipe->set( mDataProvider );
633 if ( !mDataProvider->
isValid() )
643 QgsDebugMsgLevel( QStringLiteral(
"Set Data provider QgsLayerMetadata identifier[%1]" ).arg(
metadata().identifier() ), 4 );
646 if ( provider == QLatin1String(
"gdal" ) )
679 if ( ( mDataProvider->
bandCount() > 1 ) )
727 const QList<QgsColorRampShader::ColorRampItem> colorTable = mDataProvider->
colorTable( 1 );
750 for (
int bandNo = 1; bandNo <= mDataProvider->
bandCount(); bandNo++ )
754 if (
auto *lRenderer = mPipe->renderer() )
756 lRenderer->setAlphaBand( bandNo );
777 QString resampling = settings.
value( QStringLiteral(
"/Raster/defaultZoomedInResampling" ), QStringLiteral(
"nearest neighbour" ) ).toString();
778 if ( resampling == QLatin1String(
"bilinear" ) )
783 else if ( resampling == QLatin1String(
"cubic" ) )
788 resampling = settings.
value( QStringLiteral(
"/Raster/defaultZoomedOutResampling" ), QStringLiteral(
"nearest neighbour" ) ).toString();
789 if ( resampling == QLatin1String(
"bilinear" ) )
795 const double maxOversampling = settings.
value( QStringLiteral(
"/Raster/defaultOversampling" ), 2.0 ).toDouble();
800 settings.
value( QStringLiteral(
"/Raster/defaultEarlyResampling" ),
false ).toBool() )
812 mPipe->set( projector );
856 void QgsRasterLayer::setDataSourcePrivate(
const QString &dataSource,
const QString &baseName,
const QString &provider,
859 const bool hadRenderer(
renderer() );
861 QDomImplementation domImplementation;
862 QDomDocumentType documentType;
865 bool loadDefaultStyleFlag =
false;
868 loadDefaultStyleFlag =
true;
872 if ( hadRenderer && ! loadDefaultStyleFlag )
874 documentType = domImplementation.createDocumentType(
875 QStringLiteral(
"qgis" ), QStringLiteral(
"http://mrcc.com/qgis.dtd" ), QStringLiteral(
"SYSTEM" ) );
877 QDomDocument doc = QDomDocument( documentType );
878 QDomElement styleElem = doc.createElement( QStringLiteral(
"qgis" ) );
879 styleElem.setAttribute( QStringLiteral(
"version" ),
Qgis::version() );
883 QgsDebugMsg( QStringLiteral(
"Could not store symbology for layer %1: %2" )
889 doc.appendChild( styleElem );
891 mOriginalStyleDocument = doc;
892 mOriginalStyleElement = styleElem;
901 for (
int i = mPipe->size() - 1; i >= 0; --i )
917 bool defaultLoadedFlag =
false;
918 bool restoredStyle =
false;
919 if ( loadDefaultStyleFlag )
923 else if ( !mOriginalStyleElement.isNull() )
926 if ( !
readSymbology( mOriginalStyleElement, errorMsg, readContext ) )
928 QgsDebugMsg( QStringLiteral(
"Could not restore symbology for layer %1: %2" )
935 restoredStyle =
true;
942 if ( !defaultLoadedFlag && !restoredStyle )
949 void QgsRasterLayer::closeDataProvider()
952 mPipe->remove( mDataProvider );
953 mDataProvider =
nullptr;
956 void QgsRasterLayer::computeMinMax(
int band,
961 double &min,
double &max )
964 min = std::numeric_limits<double>::quiet_NaN();
965 max = std::numeric_limits<double>::quiet_NaN();
966 if ( !mDataProvider )
973 if ( myRasterBandStats.
statsGathered == QgsRasterBandStats::Stats::None )
976 switch ( mDataProvider->
dataType( band ) )
987 myRasterBandStats.
maximumValue = std::numeric_limits<uint16_t>::max();
993 myRasterBandStats.
maximumValue = std::numeric_limits<uint32_t>::max();
999 myRasterBandStats.
minimumValue = std::numeric_limits<int16_t>::lowest();
1000 myRasterBandStats.
maximumValue = std::numeric_limits<int16_t>::max();
1006 myRasterBandStats.
minimumValue = std::numeric_limits<int32_t>::lowest();
1007 myRasterBandStats.
maximumValue = std::numeric_limits<int32_t>::max();
1013 myRasterBandStats.
minimumValue = std::numeric_limits<float_t>::lowest();
1014 myRasterBandStats.
maximumValue = std::numeric_limits<float_t>::max();
1020 myRasterBandStats.
minimumValue = std::numeric_limits<double_t>::lowest();
1021 myRasterBandStats.
maximumValue = std::numeric_limits<double_t>::max();
1046 QgsDebugMsgLevel( QStringLiteral(
"myLower = %1 myUpper = %2" ).arg( myLower ).arg( myUpper ), 4 );
1049 QgsDebugMsgLevel( QStringLiteral(
"band = %1 min = %2 max = %3" ).arg( band ).arg( min ).arg( max ), 4 );
1055 return mDataProvider ? mDataProvider->
ignoreExtents() :
false;
1060 return mTemporalProperties;
1069 generateLookupTableFlag,
1070 mPipe->renderer() );
1077 bool generateLookupTableFlag,
1081 if ( !rasterRenderer || !mDataProvider )
1087 QList<QgsContrastEnhancement *> myEnhancements;
1093 const QString rendererType = rasterRenderer->
type();
1094 if ( rendererType == QLatin1String(
"singlebandgray" ) )
1097 if ( !myGrayRenderer )
1101 myBands << myGrayRenderer->
grayBand();
1102 myRasterRenderer = myGrayRenderer;
1105 else if ( rendererType == QLatin1String(
"multibandcolor" ) )
1108 if ( !myMultiBandRenderer )
1113 myRasterRenderer = myMultiBandRenderer;
1116 else if ( rendererType == QLatin1String(
"singlebandpseudocolor" ) )
1119 if ( !myPseudoColorRenderer )
1123 myBands << myPseudoColorRenderer->
band();
1124 myRasterRenderer = myPseudoColorRenderer;
1125 myMinMaxOrigin = myPseudoColorRenderer->
minMaxOrigin();
1132 const auto constMyBands = myBands;
1133 for (
const int myBand : constMyBands )
1139 myEnhancement->setContrastEnhancementAlgorithm(
algorithm, generateLookupTableFlag );
1143 computeMinMax( myBand, myMinMaxOrigin, limits,
extent, sampleSize, min, max );
1145 if ( rendererType == QLatin1String(
"singlebandpseudocolor" ) )
1149 if ( myPseudoColorRenderer->
shader() )
1152 if ( colorRampShader )
1160 myEnhancement->setMinimumValue( min );
1161 myEnhancement->setMaximumValue( max );
1162 myEnhancements.append( myEnhancement.release() );
1167 myEnhancements.append(
nullptr );
1171 if ( rendererType == QLatin1String(
"singlebandgray" ) )
1175 else if ( rendererType == QLatin1String(
"multibandcolor" ) )
1183 qDeleteAll( myEnhancements );
1191 if ( myRasterRenderer )
1196 if ( rasterRenderer ==
renderer() )
1248 if ( mDataProvider &&
1249 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded !=
extent &&
1253 refreshRenderer( rasterRenderer,
extent );
1259 if ( mDataProvider )
1275 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded =
extent;
1278 computeMinMax( sbpcr->
band(),
1288 if ( colorRampShader )
1301 if ( colorRampShader )
1316 mLastRectangleUsedByRefreshContrastEnhancementIfNeeded =
extent;
1326 if ( singleBandRenderer )
1328 else if ( multiBandRenderer )
1352 if ( !
isValid() || !mDataProvider )
1354 QgsDebugMsgLevel( QStringLiteral(
"invoked with invalid layer or null mDataProvider" ), 3 );
1355 return customProperty( QStringLiteral(
"storedSubsetString" ) ).toString();
1366 if ( !
isValid() || !mDataProvider )
1368 QgsDebugMsgLevel( QStringLiteral(
"invoked with invalid layer or null mDataProvider or while editing" ), 3 );
1404 QString defaultLimits;
1409 key = QStringLiteral(
"singleBand" );
1419 key = QStringLiteral(
"multiBandSingleByte" );
1427 key = QStringLiteral(
"multiBandMultiByte" );
1435 if ( key.isEmpty() )
1437 QgsDebugMsgLevel( QStringLiteral(
"No default contrast enhancement for this drawing style" ), 2 );
1444 const QString myAlgorithmString = mySettings.
value(
"/Raster/defaultContrastEnhancementAlgorithm/" + key, defaultAlg ).toString();
1449 const QString myLimitsString = mySettings.
value(
"/Raster/defaultContrastEnhancementLimits/" + key, defaultLimits ).toString();
1471 if ( mDataProvider )
1473 QgsDebugMsgLevel( QStringLiteral(
"About to mDataProvider->setLayerOrder(layers)." ), 4 );
1482 if ( mDataProvider )
1484 QgsDebugMsgLevel( QStringLiteral(
"About to mDataProvider->setSubLayerVisibility(name, vis)." ), 4 );
1492 if ( !mDataProvider )
1499 if (
auto *lRenderer = mPipe->renderer() )
1501 if ( !lRenderer->accept( visitor ) )
1510 Q_UNUSED( errorMessage )
1512 QVariantMap localProps = QVariantMap( props );
1522 QDomElement constraintElem = doc.createElement( QStringLiteral(
"sld:LayerFeatureConstraints" ) );
1523 node.appendChild( constraintElem );
1525 const QDomElement featureTypeConstraintElem = doc.createElement( QStringLiteral(
"sld:FeatureTypeConstraint" ) );
1526 constraintElem.appendChild( featureTypeConstraintElem );
1528 QDomElement userStyleElem = doc.createElement( QStringLiteral(
"sld:UserStyle" ) );
1529 node.appendChild( userStyleElem );
1531 if ( !
name().isEmpty() )
1533 QDomElement nameElem = doc.createElement( QStringLiteral(
"sld:Name" ) );
1534 nameElem.appendChild( doc.createTextNode(
name() ) );
1535 userStyleElem.appendChild( nameElem );
1538 if ( !
abstract().isEmpty() )
1540 QDomElement abstractElem = doc.createElement( QStringLiteral(
"sld:Abstract" ) );
1541 abstractElem.appendChild( doc.createTextNode(
abstract() ) );
1542 userStyleElem.appendChild( abstractElem );
1545 if ( !
title().isEmpty() )
1547 QDomElement titleElem = doc.createElement( QStringLiteral(
"sld:Title" ) );
1548 titleElem.appendChild( doc.createTextNode(
title() ) );
1549 userStyleElem.appendChild( titleElem );
1552 QDomElement featureTypeStyleElem = doc.createElement( QStringLiteral(
"sld:FeatureTypeStyle" ) );
1553 userStyleElem.appendChild( featureTypeStyleElem );
1563 QDomElement typeStyleNameElem = doc.createElement( QStringLiteral(
"sld:Name" ) );
1564 featureTypeStyleElem.appendChild( typeStyleNameElem );
1567 QDomElement typeStyleRuleElem = doc.createElement( QStringLiteral(
"sld:Rule" ) );
1568 featureTypeStyleElem.appendChild( typeStyleRuleElem );
1576 QDomElement minScaleElem = doc.createElement( QStringLiteral(
"sld:MinScaleDenominator" ) );
1577 minScaleElem.appendChild( doc.createTextNode( QString::number(
maximumScale() ) ) );
1578 typeStyleRuleElem.appendChild( minScaleElem );
1581 QDomElement maxScaleElem = doc.createElement( QStringLiteral(
"sld:MaxScaleDenominator" ) );
1582 maxScaleElem.appendChild( doc.createTextNode( QString::number(
minimumScale() ) ) );
1583 typeStyleRuleElem.appendChild( maxScaleElem );
1587 mPipe->renderer()->toSld( doc, typeStyleRuleElem, localProps );
1592 const QDomNodeList elements = typeStyleRuleElem.elementsByTagName( QStringLiteral(
"sld:RasterSymbolizer" ) );
1593 if ( elements.size() != 0 )
1596 QDomElement rasterSymbolizerElem = elements.at( 0 ).toElement();
1599 auto vendorOptionWriter = [&]( QString
name, QString value )
1601 QDomElement vendorOptionElem = doc.createElement( QStringLiteral(
"sld:VendorOption" ) );
1602 vendorOptionElem.setAttribute( QStringLiteral(
"name" ),
name );
1603 vendorOptionElem.appendChild( doc.createTextNode( value ) );
1604 rasterSymbolizerElem.appendChild( vendorOptionElem );
1609 vendorOptionWriter( QStringLiteral(
"invertColors" ), QString::number( 1 ) );
1619 property = QStringLiteral(
"lightness" );
1622 property = QStringLiteral(
"luminosity" );
1625 property = QStringLiteral(
"average" );
1631 if ( !property.isEmpty() )
1632 vendorOptionWriter( QStringLiteral(
"grayScale" ), property );
1638 vendorOptionWriter( QStringLiteral(
"colorizeOn" ), QString::number(
hueSaturationFilter()->colorizeOn() ) );
1639 vendorOptionWriter( QStringLiteral(
"colorizeRed" ), QString::number(
hueSaturationFilter()->colorizeColor().red() ) );
1640 vendorOptionWriter( QStringLiteral(
"colorizeGreen" ), QString::number(
hueSaturationFilter()->colorizeColor().green() ) );
1641 vendorOptionWriter( QStringLiteral(
"colorizeBlue" ), QString::number(
hueSaturationFilter()->colorizeColor().blue() ) );
1643 vendorOptionWriter( QStringLiteral(
"colorizeStrength" ), QString::number(
hueSaturationFilter()->colorizeStrength() / 100.0 ) );
1644 vendorOptionWriter( QStringLiteral(
"saturation" ), QString::number(
hueSaturationFilter()->colorizeColor().saturationF() ) );
1653 const double sF = ( s - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
1654 vendorOptionWriter( QStringLiteral(
"saturation" ), QString::number( sF ) );
1663 const double bF = ( b - ( -255.0 ) ) / ( 255.0 - ( -255.0 ) );
1664 vendorOptionWriter( QStringLiteral(
"brightness" ), QString::number( bF ) );
1672 const double cF = (
c - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
1673 vendorOptionWriter( QStringLiteral(
"contrast" ), QString::number( cF ) );
1687 if ( newProps.contains( QStringLiteral(
"contrast" ) ) )
1690 double contrast = newProps[ QStringLiteral(
"contrast" ) ].toDouble();
1691 double percentage = ( contrast - ( -100.0 ) ) / ( 100.0 - ( -100.0 ) );
1692 if ( percentage <= 0.5 )
1695 gamma = percentage / 0.5;
1702 QDomElement globalContrastEnhancementElem = doc.createElement( QStringLiteral(
"sld:ContrastEnhancement" ) );
1703 rasterSymolizerElem.appendChild( globalContrastEnhancementElem );
1705 QDomElement gammaValueElem = doc.createElement( QStringLiteral(
"sld:GammaValue" ) );
1706 gammaValueElem.appendChild( doc.createTextNode( QString::number( gamma ) ) );
1707 globalContrastEnhancementElem.appendChild( gammaValueElem );
1731 return mPipe->renderer();
1736 return mPipe->resampleFilter();
1741 return mPipe->brightnessFilter();
1746 return mPipe->hueSaturationFilter();
1760 if ( mDataProvider )
1767 if ( ! mDataProvider )
1768 return QStringList();
1776 QImage image( size, format );
1781 if ( image.format() == QImage::Format_Indexed8 )
1783 image.setColor( 0, bgColor.rgba() );
1788 image.fill( bgColor );
1793 double mapUnitsPerPixel;
1799 mapUnitsPerPixel =
extent.
width() / image.width();
1800 y = ( image.height() -
extent.
height() / mapUnitsPerPixel ) / 2;
1805 x = ( image.width() -
extent.
width() / mapUnitsPerPixel ) / 2;
1808 const double pixelWidth =
extent.
width() / mapUnitsPerPixel;
1809 const double pixelHeight =
extent.
height() / mapUnitsPerPixel;
1813 rasterViewPort->
mWidth = image.width();
1814 rasterViewPort->
mHeight = image.height();
1822 QPainter *painter =
new QPainter( &image );
1823 draw( painter, rasterViewPort, mapToPixel );
1824 delete rasterViewPort;
1846 Q_UNUSED( errorMessage )
1849 QDomElement rasterRendererElem;
1851 const QDomElement layerElement = layer_node.toElement();
1858 QDomNode pipeNode = layer_node.firstChildElement( QStringLiteral(
"pipe" ) );
1859 if ( pipeNode.isNull() )
1861 pipeNode = layer_node;
1865 if ( !layer_node.firstChildElement( QStringLiteral(
"rasterproperties" ) ).isNull() )
1868 QDomNode layerNodeCopy = layer_node.cloneNode();
1869 QDomDocument doc = layerNodeCopy.ownerDocument();
1870 QDomElement rasterPropertiesElem = layerNodeCopy.firstChildElement( QStringLiteral(
"rasterproperties" ) );
1873 rasterRendererElem = layerNodeCopy.firstChildElement( QStringLiteral(
"rasterrenderer" ) );
1878 rasterRendererElem = pipeNode.firstChildElement( QStringLiteral(
"rasterrenderer" ) );
1881 if ( !rasterRendererElem.isNull() )
1883 const QString rendererType = rasterRendererElem.attribute( QStringLiteral(
"type" ) );
1897 const QDomElement brightnessElem = pipeNode.firstChildElement( QStringLiteral(
"brightnesscontrast" ) );
1898 if ( !brightnessElem.isNull() )
1908 const QDomElement hueSaturationElem = pipeNode.firstChildElement( QStringLiteral(
"huesaturation" ) );
1909 if ( !hueSaturationElem.isNull() )
1919 const QDomElement resampleElem = pipeNode.firstChildElement( QStringLiteral(
"rasterresampler" ) );
1920 if ( !resampleElem.isNull() )
1926 if ( mDataProvider )
1928 const QDomElement providerElem = pipeNode.firstChildElement( QStringLiteral(
"provider" ) );
1929 if ( !providerElem.isNull() )
1931 mDataProvider->
readXml( providerElem );
1936 const QDomNode resamplingStageElement = pipeNode.namedItem( QStringLiteral(
"resamplingStage" ) );
1937 if ( !resamplingStageElement.isNull() )
1939 const QDomElement e = resamplingStageElement.toElement();
1940 if ( e.text() == QLatin1String(
"provider" ) )
1942 else if ( e.text() == QLatin1String(
"resamplingFilter" ) )
1947 const QDomNode blendModeNode = layer_node.namedItem( QStringLiteral(
"blendMode" ) );
1948 if ( !blendModeNode.isNull() )
1950 const QDomElement e = blendModeNode.toElement();
1954 const QDomElement elemDataDefinedProperties = layer_node.firstChildElement( QStringLiteral(
"pipe-data-defined-properties" ) );
1955 if ( !elemDataDefinedProperties.isNull() )
1965 return readSymbology( node, errorMessage, context, categories );
1974 const QDomNode pkeyNode = layer_node.namedItem( QStringLiteral(
"provider" ) );
1976 if ( pkeyNode.isNull() )
1982 const QDomElement pkeyElt = pkeyNode.toElement();
1996 const QDomNode rpNode = layer_node.namedItem( QStringLiteral(
"rasterproperties" ) );
2002 if ( !
mDataSource.contains( QLatin1String(
"crs=" ) ) && !
mDataSource.contains( QLatin1String(
"format=" ) ) )
2004 QgsDebugMsgLevel( QStringLiteral(
"Old WMS URI format detected -> adding params" ), 4 );
2007 QDomElement layerElement = rpNode.firstChildElement( QStringLiteral(
"wmsSublayer" ) );
2008 while ( !layerElement.isNull() )
2013 uri.
setParam( QStringLiteral(
"layers" ), layerElement.namedItem( QStringLiteral(
"name" ) ).toElement().text() );
2016 uri.
setParam( QStringLiteral(
"styles" ), layerElement.namedItem( QStringLiteral(
"style" ) ).toElement().text() );
2018 layerElement = layerElement.nextSiblingElement( QStringLiteral(
"wmsSublayer" ) );
2022 uri.
setParam( QStringLiteral(
"format" ), rpNode.namedItem( QStringLiteral(
"wmsFormat" ) ).toElement().text() );
2026 uri.
setParam( QStringLiteral(
"crs" ),
crs().authid() );
2035 QgsDataProvider::ReadFlags
flags = QgsDataProvider::ReadFlags();
2043 const QDomNode extentNode = layer_node.namedItem( QStringLiteral(
"extent" ) );
2044 if ( !extentNode.isNull() )
2059 mOriginalStyleElement = layer_node.namedItem( QStringLiteral(
"originalStyle" ) ).firstChildElement();
2060 if ( mOriginalStyleElement.isNull() )
2061 mOriginalStyleElement = layer_node.toElement();
2062 mOriginalStyleDocument = layer_node.ownerDocument();
2064 if ( ! mDataProvider )
2088 QDomNode stampNode = layer_node.namedItem(
"timestamp" );
2089 if ( !stampNode.isNull() )
2091 QDateTime stamp = QDateTime::fromString( stampNode.toElement().text(), Qt::ISODate );
2093 if ( stamp < mDataProvider->dataTimestamp() )
2096 closeDataProvider();
2099 if ( !
isValid() )
return false;
2105 const QDomElement noDataElement = layer_node.firstChildElement( QStringLiteral(
"noData" ) );
2107 const QDomNodeList noDataBandList = noDataElement.elementsByTagName( QStringLiteral(
"noDataList" ) );
2109 for (
int i = 0; i < noDataBandList.size(); ++i )
2111 const QDomElement bandElement = noDataBandList.at( i ).toElement();
2113 const int bandNo = bandElement.attribute( QStringLiteral(
"bandNo" ) ).toInt( &ok );
2115 if ( ok && ( bandNo > 0 ) && ( bandNo <= mDataProvider->
bandCount() ) )
2117 mDataProvider->
setUseSourceNoDataValue( bandNo, bandElement.attribute( QStringLiteral(
"useSrcNoData" ) ).toInt() );
2120 const QDomNodeList rangeList = bandElement.elementsByTagName( QStringLiteral(
"noDataRange" ) );
2122 myNoDataRangeList.reserve( rangeList.size() );
2123 for (
int j = 0; j < rangeList.size(); ++j )
2125 const QDomElement rangeElement = rangeList.at( j ).toElement();
2126 const QgsRasterRange myNoDataRange( rangeElement.attribute( QStringLiteral(
"min" ) ).toDouble(),
2127 rangeElement.attribute( QStringLiteral(
"max" ) ).toDouble() );
2128 QgsDebugMsgLevel( QStringLiteral(
"min = %1 %2" ).arg( rangeElement.attribute(
"min" ) ).arg( myNoDataRange.
min() ), 4 );
2129 myNoDataRangeList << myNoDataRange;
2143 Q_UNUSED( errorMessage )
2146 QDomElement layerElement = layer_node.toElement();
2151 QDomElement pipeElement = document.createElement( QStringLiteral(
"pipe" ) );
2153 for (
int i = 0; i < mPipe->size(); i++ )
2156 if ( !interface )
continue;
2157 interface->writeXml( document, pipeElement );
2160 QDomElement elemDataDefinedProperties = document.createElement( QStringLiteral(
"pipe-data-defined-properties" ) );
2162 layer_node.appendChild( elemDataDefinedProperties );
2164 QDomElement resamplingStageElement = document.createElement( QStringLiteral(
"resamplingStage" ) );
2166 resamplingStageElement.appendChild( resamplingStageText );
2167 pipeElement.appendChild( resamplingStageElement );
2169 layer_node.appendChild( pipeElement );
2171 if ( !
isValid() && !mOriginalStyleElement.isNull() )
2173 QDomElement originalStyleElement = document.createElement( QStringLiteral(
"originalStyle" ) );
2174 originalStyleElement.appendChild( mOriginalStyleElement );
2175 layer_node.appendChild( originalStyleElement );
2179 QDomElement blendModeElement = document.createElement( QStringLiteral(
"blendMode" ) );
2181 blendModeElement.appendChild( blendModeText );
2182 layer_node.appendChild( blendModeElement );
2190 return writeSymbology( node, doc, errorMessage, context, categories );
2198 QDomDocument &document,
2201 if ( !mDataProvider )
2206 QDomElement mapLayerNode = layer_node.toElement();
2208 if ( mapLayerNode.isNull() ||
"maplayer" != mapLayerNode.nodeName() )
2218 QDomElement provider = document.createElement( QStringLiteral(
"provider" ) );
2219 const QDomText providerText = document.createTextNode(
mProviderKey );
2220 provider.appendChild( providerText );
2221 layer_node.appendChild( provider );
2224 QDomElement noData = document.createElement( QStringLiteral(
"noData" ) );
2226 for (
int bandNo = 1; bandNo <= mDataProvider->
bandCount(); bandNo++ )
2228 QDomElement noDataRangeList = document.createElement( QStringLiteral(
"noDataList" ) );
2229 noDataRangeList.setAttribute( QStringLiteral(
"bandNo" ), bandNo );
2230 noDataRangeList.setAttribute( QStringLiteral(
"useSrcNoData" ), mDataProvider->
useSourceNoDataValue( bandNo ) );
2232 const auto constUserNoDataValues = mDataProvider->
userNoDataValues( bandNo );
2235 QDomElement noDataRange = document.createElement( QStringLiteral(
"noDataRange" ) );
2239 noDataRangeList.appendChild( noDataRange );
2242 noData.appendChild( noDataRangeList );
2245 if ( noData.hasChildNodes() )
2247 layer_node.appendChild( noData );
2256 return writeSymbology( layer_node, document, errorMsg, context );
2260 static bool _parseGpkgColons(
const QString &src, QString &filename, QString &tablename )
2265 QStringList lst = src.split(
':' );
2266 if ( lst.count() != 3 && lst.count() != 4 )
2269 tablename = lst.last();
2270 if ( lst.count() == 3 )
2275 else if ( lst.count() == 4 && lst[1].count() == 1 && ( lst[2][0] ==
'/' || lst[2][0] ==
'\\' ) )
2278 filename = lst[1] +
":" + lst[2];
2288 bool handled =
false;
2293 if ( src.startsWith( QLatin1String(
"NETCDF:" ) ) )
2297 const QRegularExpression netcdfEncodedRegExp( QRegularExpression::anchoredPattern(
"NETCDF:(.+):([^:]+)" ) );
2298 const QRegularExpressionMatch match = netcdfEncodedRegExp.match( src );
2299 if ( match.hasMatch() )
2301 QString filename = match.captured( 1 );
2302 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2303 filename = filename.mid( 1, filename.length() - 2 );
2308 else if ( src.startsWith( QLatin1String(
"GPKG:" ) ) )
2311 QString filename, tablename;
2312 if ( _parseGpkgColons( src, filename, tablename ) )
2315 src = QStringLiteral(
"GPKG:%1:%2" ).arg( filename, tablename );
2319 else if ( src.startsWith( QLatin1String(
"HDF4_SDS:" ) ) )
2323 const QRegularExpression hdf4EncodedRegExp( QRegularExpression::anchoredPattern(
"HDF4_SDS:([^:]+):(.+):([^:]+)" ) );
2324 const QRegularExpressionMatch match = hdf4EncodedRegExp.match( src );
2325 if ( match.hasMatch() )
2327 QString filename = match.captured( 2 );
2328 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2329 filename = filename.mid( 1, filename.length() - 2 );
2330 src =
"HDF4_SDS:" + match.captured( 1 ) +
":\"" + context.
pathResolver().
writePath( filename ) +
"\":" + match.captured( 3 );
2334 else if ( src.startsWith( QLatin1String(
"HDF5:" ) ) )
2338 const QRegularExpression hdf5EncodedRegExp( QRegularExpression::anchoredPattern(
"HDF5:(.+):([^:]+)" ) );
2339 const QRegularExpressionMatch match = hdf5EncodedRegExp.match( src );
2340 if ( match.hasMatch() )
2342 QString filename = match.captured( 1 );
2343 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2344 filename = filename.mid( 1, filename.length() - 2 );
2349 else if ( src.contains( QRegularExpression(
"^(NITF_IM|RADARSAT_2_CALIB):" ) ) )
2353 const QRegularExpression nitfRadarsatEncodedRegExp( QRegularExpression::anchoredPattern(
"([^:]+):([^:]+):(.+)" ) );
2354 const QRegularExpressionMatch match = nitfRadarsatEncodedRegExp.match( src );
2355 if ( match.hasMatch() )
2357 src = match.captured( 1 ) +
':' + match.captured( 2 ) +
':' + context.
pathResolver().
writePath( match.captured( 3 ) );
2367 const QUrl srcUrl( uri.
param( QStringLiteral(
"url" ) ) );
2368 if ( srcUrl.isLocalFile() )
2373 uri.
setParam( QStringLiteral(
"url" ), QUrl::fromLocalFile( relSrcUrl ).toString() );
2400 if ( provider == QLatin1String(
"wms" ) )
2414 if ( !src.contains( QLatin1String(
"type=" ) ) &&
2415 !src.contains( QLatin1String(
"crs=" ) ) && !src.contains( QLatin1String(
"format=" ) ) )
2417 QgsDebugMsgLevel( QStringLiteral(
"Old WMS URI format detected -> converting to new format" ), 2 );
2419 if ( !src.startsWith( QLatin1String(
"http:" ) ) )
2421 const QStringList parts = src.split(
',' );
2422 QStringListIterator iter( parts );
2423 while ( iter.hasNext() )
2425 const QString item = iter.next();
2426 if ( item.startsWith( QLatin1String(
"username=" ) ) )
2430 else if ( item.startsWith( QLatin1String(
"password=" ) ) )
2434 else if ( item.startsWith( QLatin1String(
"tiled=" ) ) )
2440 QStringList params = item.mid( 6 ).split(
';' );
2442 if ( params.size() == 2 )
2444 uri.
setParam( QStringLiteral(
"maxWidth" ), params.takeFirst() );
2445 uri.
setParam( QStringLiteral(
"maxHeight" ), params.takeFirst() );
2447 else if ( params.size() > 2 )
2451 uri.
setParam( QStringLiteral(
"tileMatrixSet" ), QString() );
2454 else if ( item.startsWith( QLatin1String(
"featureCount=" ) ) )
2456 uri.
setParam( QStringLiteral(
"featureCount" ), item.mid( 13 ) );
2458 else if ( item.startsWith( QLatin1String(
"url=" ) ) )
2460 uri.
setParam( QStringLiteral(
"url" ), item.mid( 4 ) );
2462 else if ( item.startsWith( QLatin1String(
"ignoreUrl=" ) ) )
2464 uri.
setParam( QStringLiteral(
"ignoreUrl" ), item.mid( 10 ).split(
';' ) );
2470 uri.
setParam( QStringLiteral(
"url" ), src );
2481 const QUrl srcUrl( uri.
param( QStringLiteral(
"url" ) ) );
2482 if ( srcUrl.isLocalFile() )
2486 uri.
setParam( QStringLiteral(
"url" ), QUrl::fromLocalFile( absSrcUrl ).toString() );
2493 bool handled =
false;
2495 if ( provider == QLatin1String(
"gdal" ) )
2497 if ( src.startsWith( QLatin1String(
"NETCDF:" ) ) )
2501 const QRegularExpression netcdfDecodedRegExp( QRegularExpression::anchoredPattern(
"NETCDF:(.+):([^:]+)" ) );
2502 const QRegularExpressionMatch match = netcdfDecodedRegExp.match( src );
2503 if ( match.hasMatch() )
2505 QString filename = match.captured( 1 );
2506 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2507 filename = filename.mid( 1, filename.length() - 2 );
2512 else if ( src.startsWith( QLatin1String(
"GPKG:" ) ) )
2515 QString filename, tablename;
2516 if ( _parseGpkgColons( src, filename, tablename ) )
2519 src = QStringLiteral(
"GPKG:%1:%2" ).arg( filename, tablename );
2523 else if ( src.startsWith( QLatin1String(
"HDF4_SDS:" ) ) )
2527 const QRegularExpression hdf4DecodedRegExp( QRegularExpression::anchoredPattern(
"HDF4_SDS:([^:]+):(.+):([^:]+)" ) );
2528 const QRegularExpressionMatch match = hdf4DecodedRegExp.match( src );
2529 if ( match.hasMatch() )
2531 QString filename = match.captured( 2 );
2532 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2533 filename = filename.mid( 1, filename.length() - 2 );
2534 src =
"HDF4_SDS:" + match.captured( 1 ) +
":\"" + context.
pathResolver().
readPath( filename ) +
"\":" + match.captured( 3 );
2538 else if ( src.startsWith( QLatin1String(
"HDF5:" ) ) )
2542 const QRegularExpression hdf5DecodedRegExp( QRegularExpression::anchoredPattern(
"HDF5:(.+):([^:]+)" ) );
2543 const QRegularExpressionMatch match = hdf5DecodedRegExp.match( src );
2544 if ( match.hasMatch() )
2546 QString filename = match.captured( 1 );
2547 if ( filename.startsWith(
'"' ) && filename.endsWith(
'"' ) )
2548 filename = filename.mid( 1, filename.length() - 2 );
2553 else if ( src.contains( QRegularExpression(
"^(NITF_IM|RADARSAT_2_CALIB):" ) ) )
2557 const QRegularExpression niftRadarsatDecodedRegExp( QRegularExpression::anchoredPattern(
"([^:]+):([^:]+):(.+)" ) );
2558 const QRegularExpressionMatch match = niftRadarsatDecodedRegExp.match( src );
2559 if ( match.hasMatch() )
2561 src = match.captured( 1 ) +
':' + match.captured( 2 ) +
':' + context.
pathResolver().
readPath( match.captured( 3 ) );
2567 if ( provider == QLatin1String(
"virtualraster" ) )
2588 if ( !mDataProvider )
return 0;
2589 return mDataProvider->
xSize();
2594 if ( !mDataProvider )
return 0;
2595 return mDataProvider->
ySize();
2600 mPipe->setResamplingStage( stage );
2605 return mPipe->resamplingStage();
2613 bool QgsRasterLayer::update()
2620 closeDataProvider();
2623 QgsDataProvider::ReadFlags
flags = QgsDataProvider::ReadFlags();
static QString version()
Version string.
RasterResamplingStage
Stage at which raster resampling occurs.
@ Provider
Resampling occurs in Provider.
@ ResampleFilter
Resampling occurs in ResamplingFilter.
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)
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...
@ SkipGetExtent
Skip the extent from provider.
QgsCoordinateTransformContext transformContext() const
Returns data provider coordinate transform context.
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.
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
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
QgsMapLayerServerProperties * serverProperties()
Returns QGIS Server Properties for the map layer.
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.
virtual QgsMapLayer * clone() const =0
Returns a new instance equivalent to this one except for the id which is still unique.
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...
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,...
@ 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 * redContrastEnhancement() const
Returns the contrast enhancement to use for the red 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 * greenContrastEnhancement() const
Returns the contrast enhancement to use for the green 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.
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.
virtual QList< QgsColorRampShader::ColorRampItem > colorTable(int bandNo) const
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 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 QgsRasterInterface * input() const
Current input.
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
Iterator for sequentially processing raster cells.
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.
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.
QgsRasterPipe * pipe()
Returns the raster pipe.
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.
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.
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.
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
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.
QgsRasterShaderFunction * rasterShaderFunction()
void setRasterShaderFunction(QgsRasterShaderFunction *function)
A public method that allows the user to set their own shader function.
@ 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.
void setContrastEnhancement(QgsContrastEnhancement *ce)
Takes ownership.
const QgsContrastEnhancement * contrastEnhancement() const
Raster renderer pipe for single band pseudocolor.
void setClassificationMin(double min)
int band() const
Returns the band used by the renderer.
QgsRasterShader * shader()
Returns the raster shader.
void setShader(QgsRasterShader *shader)
Takes ownership of the shader.
void setClassificationMax(double max)
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.
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.