Add method to convert raster source to QgsRasterLayer

python/core/auto_generated/vectortile/qgsmapboxglstyleconverter.sip.in

@@ -250,6 +250,13 @@ Returns the associated tile size.
     QStringList tiles() const;
 %Docstring
 Returns the list of tile sources.
+%End
+
+    QgsRasterLayer *toRasterLayer() const /Factory/;
+%Docstring
+Returns a new raster layer representing the raster source, or ``None`` if the source cannot be represented as a raster layer.
+
+The caller takes ownership of the returned layer.
 %End
 
 };

src/core/vectortile/qgsmapboxglstyleconverter.cpp

@@ -39,6 +39,8 @@
 #include "qgsapplication.h"
 #include "qgsfontmanager.h"
 #include "qgis.h"
+#include "qgsrasterlayer.h"
+#include "qgsproviderregistry.h"
 
 #include <QBuffer>
 #include <QRegularExpression>
@@ -3581,3 +3583,21 @@ bool QgsMapBoxGlStyleRasterSource::setFromJson( const QVariantMap &json, QgsMapB
 
   return true;
 }
+
+QgsRasterLayer *QgsMapBoxGlStyleRasterSource::toRasterLayer() const
+{
+  QVariantMap parts;
+  parts.insert( QStringLiteral( "type" ), QStringLiteral( "xyz" ) );
+  parts.insert( QStringLiteral( "url" ), mTiles.value( 0 ) );
+
+  if ( mTileSize == 256 )
+    parts.insert( QStringLiteral( "tilePixelRation" ), QStringLiteral( "1" ) );
+  else if ( mTileSize == 512 )
+    parts.insert( QStringLiteral( "tilePixelRation" ), QStringLiteral( "2" ) );
+
+  parts.insert( QStringLiteral( "zmax" ), QString::number( mMaxZoom ) );
+  parts.insert( QStringLiteral( "zmin" ), QString::number( mMinZoom ) );
+
+  std::unique_ptr< QgsRasterLayer > rl = std::make_unique< QgsRasterLayer >( QgsProviderRegistry::instance()->encodeUri( QStringLiteral( "wms" ), parts ), name(), QStringLiteral( "wms" ) );
+  return rl.release();
+}

src/core/vectortile/qgsmapboxglstyleconverter.h

@@ -27,6 +27,7 @@ class QgsVectorTileRenderer;
 class QgsVectorTileLabeling;
 class QgsVectorTileBasicRendererStyle;
 class QgsVectorTileBasicLabelingStyle;
+class QgsRasterLayer;
 
 /**
  * Context for a MapBox GL style conversion operation.
@@ -249,7 +250,7 @@ class CORE_EXPORT QgsMapBoxGlStyleRasterSource : public QgsMapBoxGlStyleAbstract
      *
      * \see minimumZoom()
      */
-    int maximumZoom() const { return mMinZoom; }
+    int maximumZoom() const { return mMaxZoom; }
 
     /**
      * Returns the associated tile size.
@@ -261,6 +262,13 @@ class CORE_EXPORT QgsMapBoxGlStyleRasterSource : public QgsMapBoxGlStyleAbstract
      */
     QStringList tiles() const { return mTiles; }
 
+    /**
+     * Returns a new raster layer representing the raster source, or NULLPTR if the source cannot be represented as a raster layer.
+     *
+     * The caller takes ownership of the returned layer.
+     */
+    QgsRasterLayer *toRasterLayer() const SIP_FACTORY;
+
   private:
 
     QStringList mTiles;

tests/src/python/test_qgsmapboxglconverter.py

@@ -21,7 +21,8 @@ from qgis.core import (QgsMapBoxGlStyleConverter,
                        QgsApplication,
                        QgsFontManager,
                        QgsSettings,
-                       Qgis
+                       Qgis,
+                       QgsRasterLayer
                        )
 from qgis.testing import start_app, unittest
 
@@ -978,6 +979,12 @@ class TestQgsMapBoxGlStyleConverter(unittest.TestCase):
         self.assertEqual(raster_source.tileSize(), 256)
         self.assertEqual(raster_source.tiles(), ['https://yyyyyy/v1/tiles/texturereliefshade/EPSG:3857/{z}/{x}/{y}.webp'])
 
+        # convert to raster layer
+        rl = raster_source.toRasterLayer()
+        self.assertIsInstance(rl, QgsRasterLayer)
+        self.assertEqual(rl.source(), 'tilePixelRation=1&type=xyz&url=https://yyyyyy/v1/tiles/texturereliefshade/EPSG:3857/%7Bz%7D/%7Bx%7D/%7By%7D.webp&zmax=20&zmin=3')
+        self.assertEqual(rl.providerType(), 'wms')
+
     def testLabelWithStops(self):
         context = QgsMapBoxGlStyleConversionContext()
         style = {