26 QList< QgsMapClippingRegion > res;
27 const QList< QgsMapClippingRegion > regions = context.
clippingRegions();
28 res.reserve( regions.size() );
30 std::copy_if( regions.begin(), regions.end(), std::back_inserter( res ), [layer](
const QgsMapClippingRegion & region )
32 return region.appliesToLayer( layer );
51 result = region.geometry();
73 QgsDebugMsg( QStringLiteral(
"Could not transform clipping region to layer CRS" ) );
97 result = region.geometry();
119 QgsDebugMsg( QStringLiteral(
"Could not transform clipping region to layer CRS" ) );
163 result = region.geometry();
173 return QPainterPath();
201 result = region.geometry();
223 QgsDebugMsg( QStringLiteral(
"Could not transform clipping region to layer CRS" ) );
virtual QPainterPath asQPainterPath() const =0
Returns the geometry represented as a QPainterPath.
Custom exception class for Coordinate Reference System related exceptions.
A geometry is the spatial representation of a feature.
const QgsAbstractGeometry * constGet() const SIP_HOLDGIL
Returns a non-modifiable (const) reference to the underlying abstract geometry primitive.
Qgis::GeometryOperationResult transform(const QgsCoordinateTransform &ct, Qgis::TransformDirection direction=Qgis::TransformDirection::Forward, bool transformZ=false) SIP_THROW(QgsCsException)
Transforms this geometry as described by the coordinate transform ct.
void mapToPixel(const QgsMapToPixel &mtp)
Transforms the geometry from map units to pixels in place.
QgsGeometry intersection(const QgsGeometry &geometry) const
Returns a geometry representing the points shared by this geometry and other.
bool convertGeometryCollectionToSubclass(QgsWkbTypes::GeometryType geomType)
Converts geometry collection to a the desired geometry type subclass (multi-point,...
A map clipping region (in map coordinates and CRS).
@ ClipPainterOnly
Applying clipping on the painter only (i.e. feature boundaries will be unchanged, but may be invisibl...
@ ClipToIntersection
Clip the geometry of these features to the region prior to rendering (i.e. feature boundaries will fo...
static QList< QgsMapClippingRegion > collectClippingRegionsForLayer(const QgsRenderContext &context, const QgsMapLayer *layer)
Collects the list of map clipping regions from a context which apply to a map layer.
static QPainterPath calculatePainterClipRegion(const QList< QgsMapClippingRegion > ®ions, const QgsRenderContext &context, QgsMapLayerType layerType, bool &shouldClip)
Returns a QPainterPath representing the intersection of clipping regions from context which should be...
static QgsGeometry calculateLabelIntersectionGeometry(const QList< QgsMapClippingRegion > ®ions, const QgsRenderContext &context, bool &shouldClip)
Returns the geometry representing the intersection of clipping regions from context which should be u...
static QgsGeometry calculateFeatureIntersectionGeometry(const QList< QgsMapClippingRegion > ®ions, const QgsRenderContext &context, bool &shouldClip)
Returns the geometry representing the intersection of clipping regions from context which should be u...
static QgsGeometry calculateFeatureRequestGeometry(const QList< QgsMapClippingRegion > ®ions, const QgsRenderContext &context, bool &shouldFilter)
Returns the geometry representing the intersection of clipping regions from context.
Base class for all map layer types.
Contains information about the context of a rendering operation.
const QgsMapToPixel & mapToPixel() const
Returns the context's map to pixel transform, which transforms between map coordinates and device coo...
QList< QgsMapClippingRegion > clippingRegions() const
Returns the list of clipping regions to apply during the render.
QgsCoordinateTransform coordinateTransform() const
Returns the current coordinate transform for the context.
QgsMapLayerType
Types of layers that can be added to a map.
@ PointCloudLayer
Added in 3.18.
@ VectorTileLayer
Added in 3.14.
@ AnnotationLayer
Contains freeform, georeferenced annotations. Added in QGIS 3.16.