15#ifndef QGSDIAGRAMRENDERER_H
16#define QGSDIAGRAMRENDERER_H
25#include <QDomDocument>
80 MapOrientation = 1 << 4,
82 Q_DECLARE_FLAGS( LinePlacementFlags, LinePlacementFlag )
180 double zIndex()
const {
return mZIndex; }
279 void readXml(
const QDomElement &elem );
285 void writeXml( QDomElement &layerElem, QDomDocument &doc )
const;
333 Placement mPlacement = AroundPoint;
336 LinePlacementFlags mPlacementFlags = OnLine;
346 double mZIndex = 0.0;
349 bool mObstacle =
false;
352 double mDistance = 0.0;
358 bool mShowAll =
true;
363 static void initPropertyDefinitions();
450 double penWidth = 0.0;
453 double barWidth = 5.0;
456 double opacity = 1.0;
458 bool scaleByArea =
true;
464 double rotationOffset = 270;
466 bool scaleBasedVisibility =
false;
474 double maximumScale = 0;
482 double minimumScale = 0;
485 double minimumSize = 0.0;
566 void setDirection(
Direction direction );
610 bool showAxis()
const;
620 void setShowAxis(
bool showAxis );
649 bool mShowAxis =
false;
650 std::unique_ptr< QgsLineSymbol > mAxisLineSymbol;
651 std::unique_ptr< QgsPaintEffect > mPaintEffect;
687 if ( sipCpp->rendererName() == QLatin1String(
"SingleCategory" ) )
688 sipType = sipType_QgsSingleCategoryDiagramRenderer;
689 else if ( sipCpp->rendererName() == QLatin1String(
"LinearlyInterpolated" ) )
690 sipType = sipType_QgsLinearlyInterpolatedDiagramRenderer;
788 void convertSizeToMapUnits( QSizeF &size,
const QgsRenderContext &context )
const;
791 static int dpiPaintDevice(
const QPainter * );
805 void _writeXml( QDomElement &rendererElem, QDomDocument &doc,
const QgsReadWriteContext &context )
const;
811 bool mShowAttributeLegend =
true;
827 QString rendererName()
const override {
return QStringLiteral(
"SingleCategory" ); }
833 QList<QgsDiagramSettings> diagramSettings()
const override;
836 void writeXml( QDomElement &layerElem, QDomDocument &doc,
const QgsReadWriteContext &context )
const override;
866 QList<QgsDiagramSettings> diagramSettings()
const override;
870 QList<QString> diagramAttributes()
const override;
874 QString
rendererName()
const override {
return QStringLiteral(
"LinearlyInterpolated" ); }
876 void setLowerValue(
double val ) { mInterpolationSettings.lowerValue = val; }
877 double lowerValue()
const {
return mInterpolationSettings.lowerValue; }
879 void setUpperValue(
double val ) { mInterpolationSettings.upperValue = val; }
880 double upperValue()
const {
return mInterpolationSettings.upperValue; }
882 void setLowerSize( QSizeF s ) { mInterpolationSettings.lowerSize = s; }
883 QSizeF
lowerSize()
const {
return mInterpolationSettings.lowerSize; }
885 void setUpperSize( QSizeF s ) { mInterpolationSettings.upperSize = s; }
886 QSizeF
upperSize()
const {
return mInterpolationSettings.upperSize; }
909 void writeXml( QDomElement &layerElem, QDomDocument &doc,
const QgsReadWriteContext &context )
const override;
RenderUnit
Rendering size units.
@ Millimeters
Millimeters.
Object that keeps configuration of appearance of marker symbol's data-defined size in legend.
Additional diagram settings for interpolated size rendering.
bool classificationAttributeIsExpression
QString classificationField
Name of the field for classification.
QString classificationAttributeExpression
Stores the settings for rendering of all diagrams for a layer.
LinePlacementFlag
Line placement flags for controlling line based placements.
void setZIndex(double index)
Sets the diagram z-index.
Placement placement() const
Returns the diagram placement.
QgsCoordinateTransform coordinateTransform() const
Returns the coordinate transform associated with the layer, or an invalid transform if no transformat...
Property
Data definable properties.
@ StartAngle
Angle offset for pie diagram.
@ Distance
Distance to diagram from feature.
@ IsObstacle
Whether diagram features act as obstacles for other diagrams/labels.
@ PositionX
X-coordinate data defined diagram position.
@ Priority
Diagram priority (between 0 and 10)
@ AlwaysShow
Whether the diagram should always be shown, even if it overlaps other diagrams/labels.
@ Show
Whether to show the diagram.
@ StrokeColor
Stroke color.
@ StrokeWidth
Stroke width.
@ ZIndex
Z-index for diagram ordering.
@ BackgroundColor
Diagram background color.
@ PositionY
Y-coordinate data defined diagram position.
bool showAllDiagrams() const
Returns whether the layer should show all diagrams, including overlapping diagrams.
QgsPropertyCollection & dataDefinedProperties()
Returns a reference to the diagram's property collection, used for data defined overrides.
LinePlacementFlags linePlacementFlags() const
Returns the diagram placement flags.
const QgsPropertyCollection & dataDefinedProperties() const
Returns a reference to the diagram's property collection, used for data defined overrides.
void setShowAllDiagrams(bool showAllDiagrams)
Sets whether the layer should show all diagrams, including overlapping diagrams.
void setDistance(double distance)
Sets the distance between the diagram and the feature.
void setPriority(int value)
Sets the diagram priority.
int priority() const
Returns the diagram priority.
const QgsDiagramRenderer * renderer() const
Returns the diagram renderer associated with the layer.
void setIsObstacle(bool isObstacle)
Sets whether the feature associated with a diagram acts as an obstacle for other labels or diagrams.
QgsDiagramRenderer * renderer()
Returns the diagram renderer associated with the layer.
bool isObstacle() const
Returns whether the feature associated with a diagram acts as an obstacle for other labels or diagram...
void setPlacement(Placement value)
Sets the diagram placement.
void setLinePlacementFlags(LinePlacementFlags flags)
Sets the the diagram placement flags.
void setDataDefinedProperties(const QgsPropertyCollection &collection)
Sets the diagram's property collection, used for data defined overrides.
double zIndex() const
Returns the diagram z-index.
double distance() const
Returns the distance between the diagram and the feature (in mm).
Evaluates and returns the diagram settings relating to a diagram for a specific feature.
virtual QString rendererName() const =0
QgsDiagram * diagram() const
virtual QSizeF diagramSize(const QgsFeature &features, const QgsRenderContext &c) const =0
Returns size of the diagram (in painter units) or an invalid size in case of error.
void setAttributeLegend(bool enabled)
Sets whether the renderer will show legend items for diagram attributes.
virtual bool diagramSettings(const QgsFeature &feature, const QgsRenderContext &c, QgsDiagramSettings &s) const =0
Returns diagram settings for a feature (or false if the diagram for the feature is not to be rendered...
virtual void writeXml(QDomElement &layerElem, QDomDocument &doc, const QgsReadWriteContext &context) const =0
Writes diagram state to a DOM element.
virtual QList< QString > diagramAttributes() const =0
Returns attribute indices needed for diagram rendering.
std::unique_ptr< QgsDiagram > mDiagram
Reference to the object that does the real diagram rendering.
virtual ~QgsDiagramRenderer()=default
virtual QList< QgsDiagramSettings > diagramSettings() const =0
Returns list with all diagram settings in the renderer.
QgsDiagramRenderer()=default
Constructor for QgsDiagramRenderer.
virtual void readXml(const QDomElement &elem, const QgsReadWriteContext &context)=0
Reads diagram state from a DOM element.
bool attributeLegend() const
Returns true if renderer will show legend items for diagram attributes.
virtual QgsDiagramRenderer * clone() const =0
Returns new instance that is equivalent to this one.
Stores the settings for rendering a single diagram.
DiagramOrientation
Orientation of histogram.
void setSpacingUnit(Qgis::RenderUnit unit)
Sets the unit for the content spacing.
QList< QString > categoryAttributes
QList< QString > categoryLabels
QgsMapUnitScale lineSizeScale
Line unit scale.
double spacing() const
Returns the spacing between diagram contents.
QList< QColor > categoryColors
QgsMapUnitScale sizeScale
Diagram size unit scale.
void setSpacing(double spacing)
Sets the spacing between diagram contents.
void setSpacingMapUnitScale(const QgsMapUnitScale &scale)
Sets the map unit scale for the content spacing.
const QgsMapUnitScale & spacingMapUnitScale() const
Returns the map unit scale for the content spacing.
Direction
Angular directions.
@ Counterclockwise
Counter-clockwise orientation.
@ Clockwise
Clockwise orientation.
Qgis::RenderUnit spacingUnit() const
Returns the units for the content spacing.
Base class for all diagram types.
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Layer tree node points to a map layer.
The QgsLegendRendererItem class is abstract interface for legend items returned from QgsMapLayerLegen...
A line symbol type, for rendering LineString and MultiLineString geometries.
void setLowerValue(double val)
double upperValue() const
QString classificationAttributeExpression() const
void setDiagramSettings(const QgsDiagramSettings &s)
double lowerValue() const
void setLowerSize(QSizeF s)
QString classificationField() const
Returns the field name used for interpolating the diagram size.
void setClassificationAttributeExpression(const QString &expression)
bool classificationAttributeIsExpression() const
QString rendererName() const override
void setClassificationField(const QString &field)
Sets the field name used for interpolating the diagram size.
void setClassificationAttributeIsExpression(bool isExpression)
void setUpperSize(QSizeF s)
void setUpperValue(double val)
Perform transforms between map coordinates and device coordinates.
Struct for storing maximum and minimum scales for measurements in map units.
Base class for visual effects which can be applied to QPicture drawings.
A grouped map of multiple QgsProperty objects, each referenced by a integer key value.
The class is used as a container of context for various read/write operations on other objects.
Contains information about the context of a rendering operation.
Renders the diagrams for all features with the same settings.
void setDiagramSettings(const QgsDiagramSettings &s)
QgsSingleCategoryDiagramRenderer()=default
Constructor for QgsSingleCategoryDiagramRenderer.
QList< QString > diagramAttributes() const override
Returns attribute indices needed for diagram rendering.
Represents a vector layer which manages a vector based data sets.
A set of features which influence the labeling process.
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
#define SIP_CONVERT_TO_SUBCLASS_CODE(code)
QMap< int, QgsPropertyDefinition > QgsPropertiesDefinition
Definition of available properties.