34 #include <QDomElement> 40 #define M_SQRT2 1.41421356237309504880 45 , mLabelAttributeName( labelAttributeName )
51 , mCircleColor(
QColor( 125, 125, 125 ) )
52 , mCircleRadiusAddition( 0 )
53 , mMaxLabelScaleDenominator( -1 )
54 , mSpatialIndex( nullptr )
91 mRenderer->
toSld( doc, element );
97 Q_UNUSED( drawVertexMarker );
105 QgsSymbolV2* symbol = firstSymbolForFeature( mRenderer, feature, context );
121 mSelectedFeatures.
insert( feature.
id() );
125 if ( intersectList.
empty() )
130 newGroup.
insert( feature.
id(), qMakePair( feature, symbol ) );
131 mDisplacementGroups.push_back( newGroup );
133 mGroupIndex.
insert( feature.
id(), mDisplacementGroups.count() - 1 );
140 int groupIdx = mGroupIndex[ existingEntry ];
144 group.
insert( feature.
id(), qMakePair( feature, symbol ) );
146 mGroupIndex.
insert( feature.
id(), groupIdx );
153 bool selected = mSelectedFeatures.
contains( feature.
id() );
164 labelAttributeList << ( mDrawLabels ? getLabel( attIt.value().first ) :
QString() );
165 symbolList << dynamic_cast<QgsMarkerSymbolV2*>( attIt.value().second );
166 groupMultiPoint->
addGeometry( attIt.value().first.constGeometry()->geometry()->clone() );
192 double circleRadius = -1.0;
193 calculateSymbolAndLabelPositions( symbolContext, pt, symbolList.
size(), diagonal, symbolPositions, labelPositions, circleRadius );
196 if ( circleRadius > 0 )
197 drawCircle( circleRadius, symbolContext, pt, symbolList.
size() );
200 if ( labelAttributeList.
size() > 1 )
204 mCenterSymbol->
renderPoint( pt, &feature, context, -1, selected );
213 drawSymbols( feature, context, symbolList, symbolPositions, selected );
215 drawLabels( pt, symbolContext, labelPositions, labelAttributeList );
227 if ( !mLabelAttributeName.
isEmpty() )
229 attributeList.
push_back( mLabelAttributeName );
235 return attributeList;
253 return mRenderer->
symbols( context );
302 mDisplacementGroups.clear();
305 mSelectedFeatures.
clear();
307 if ( mLabelAttributeName.
isEmpty() )
316 if ( mMaxLabelScaleDenominator > 0 && context.
rendererScale() > mMaxLabelScaleDenominator )
334 QgsDebugMsg(
"QgsPointDisplacementRenderer::stopRender" );
340 drawGroup( group, context );
343 mDisplacementGroups.clear();
345 delete mSpatialIndex;
346 mSpatialIndex =
nullptr;
347 mSelectedFeatures.
clear();
378 if ( !embeddedRendererElem.
isNull() )
385 if ( !centerSymbolElem.
isNull() )
387 r->
setCenterSymbol( QgsSymbolLayerV2Utils::loadSymbol<QgsMarkerSymbolV2>( centerSymbolElem ) );
396 rendererElement.
setAttribute(
"type",
"pointDisplacement" );
397 rendererElement.
setAttribute(
"labelAttributeName", mLabelAttributeName );
403 rendererElement.
setAttribute(
"placement", static_cast< int >( mPlacement ) );
412 rendererElement.
appendChild( embeddedRendererElem );
431 return rendererElement;
453 QgsRectangle QgsPointDisplacementRenderer::searchRect(
const QgsPoint& p,
double distance )
const 455 return QgsRectangle( p.
x() - distance, p.
y() - distance, p.
x() + distance, p.
y() + distance );
458 void QgsPointDisplacementRenderer::printInfoDisplacementGroups()
460 int nGroups = mDisplacementGroups.size();
462 for (
int i = 0; i < nGroups; ++i )
466 for ( ; it != mDisplacementGroups.at( i ).constEnd(); ++it )
477 if ( mLabelIndex >= 0 && mLabelIndex < attrs.
count() )
479 attribute = attrs.
at( mLabelIndex ).toString();
486 delete mCenterSymbol;
487 mCenterSymbol = symbol;
495 symbolPositions.
clear();
502 else if ( nPosition == 1 )
504 symbolPositions.
append( centerPoint );
505 labelShifts.
append(
QPointF( symbolDiagonal / 2.0, -symbolDiagonal / 2.0 ) );
509 double circleAdditionPainterUnits = symbolContext.
outputLineWidth( mCircleRadiusAddition );
511 switch ( mPlacement )
515 double minDiameterToFitSymbols = nPosition * symbolDiagonal / ( 2.0 *
M_PI );
516 double radius = qMax( symbolDiagonal / 2, minDiameterToFitSymbols ) + circleAdditionPainterUnits;
518 double fullPerimeter = 2 *
M_PI;
519 double angleStep = fullPerimeter / nPosition;
520 for (
double currentAngle = 0.0; currentAngle < fullPerimeter; currentAngle += angleStep )
522 double sinusCurrentAngle = sin( currentAngle );
523 double cosinusCurrentAngle = cos( currentAngle );
524 QPointF positionShift( radius * sinusCurrentAngle, radius * cosinusCurrentAngle );
525 QPointF labelShift(( radius + symbolDiagonal / 2 ) * sinusCurrentAngle, ( radius + symbolDiagonal / 2 ) * cosinusCurrentAngle );
526 symbolPositions.
append( centerPoint + positionShift );
527 labelShifts.
append( labelShift );
530 circleRadius = radius;
539 int pointsRemaining = nPosition;
541 double firstRingRadius = centerDiagonal / 2.0 + symbolDiagonal / 2.0;
542 while ( pointsRemaining > 0 )
544 double radiusCurrentRing = qMax( firstRingRadius + ( ringNumber - 1 ) * symbolDiagonal + ringNumber * circleAdditionPainterUnits, 0.0 );
545 int maxPointsCurrentRing = qMax( floor( 2 *
M_PI * radiusCurrentRing / symbolDiagonal ), 1.0 );
546 int actualPointsCurrentRing = qMin( maxPointsCurrentRing, pointsRemaining );
548 double angleStep = 2 *
M_PI / actualPointsCurrentRing;
549 double currentAngle = 0.0;
550 for (
int i = 0; i < actualPointsCurrentRing; ++i )
552 double sinusCurrentAngle = sin( currentAngle );
553 double cosinusCurrentAngle = cos( currentAngle );
554 QPointF positionShift( radiusCurrentRing * sinusCurrentAngle, radiusCurrentRing * cosinusCurrentAngle );
555 QPointF labelShift(( radiusCurrentRing + symbolDiagonal / 2 ) * sinusCurrentAngle, ( radiusCurrentRing + symbolDiagonal / 2 ) * cosinusCurrentAngle );
556 symbolPositions.
append( centerPoint + positionShift );
557 labelShifts.
append( labelShift );
558 currentAngle += angleStep;
561 pointsRemaining -= actualPointsCurrentRing;
563 circleRadius = radiusCurrentRing;
573 if ( nSymbols < 2 || !p )
579 QPen circlePen( mCircleColor );
582 p->
drawArc(
QRectF( centerPoint.
x() - radiusPainterUnits, centerPoint.
y() - radiusPainterUnits, 2 * radiusPainterUnits, 2 * radiusPainterUnits ), 0, 5760 );
589 for ( ; symbolPosIt != symbolPositions.
constEnd() && symbolIt != symbolList.
constEnd(); ++symbolPosIt, ++symbolIt )
593 ( *symbolIt )->renderPoint( *symbolPosIt, &f, context, -1, selected );
606 QPen labelPen( mLabelColor );
610 QFont pixelSizeFont = mLabelFont;
612 QFont scaledFont = pixelSizeFont;
622 for ( ; labelPosIt != labelShifts.
constEnd() && text_it != labelList.
constEnd(); ++labelPosIt, ++text_it )
624 currentLabelShift = *labelPosIt;
625 if ( currentLabelShift.
x() < 0 )
627 currentLabelShift.
setX( currentLabelShift.
x() - fontMetrics.
width( *text_it ) );
629 if ( currentLabelShift.
y() > 0 )
631 currentLabelShift.
setY( currentLabelShift.
y() + fontMetrics.
ascent() );
634 QPointF drawingPoint( centerPoint + currentLabelShift );
636 p->
translate( drawingPoint.
x(), drawingPoint.
y() );
651 if ( symbolList.
size() < 1 )
656 return symbolList.
at( 0 );
661 if ( renderer->
type() ==
"pointDisplacement" )
666 if ( renderer->
type() ==
"singleSymbol" ||
667 renderer->
type() ==
"categorizedSymbol" ||
668 renderer->
type() ==
"graduatedSymbol" ||
669 renderer->
type() ==
"RuleRenderer" )
673 return pointRenderer;
QgsFeatureId id() const
Get the feature ID for this feature.
static QString encodeOutputUnit(QgsSymbolV2::OutputUnit unit)
virtual bool addGeometry(QgsAbstractGeometryV2 *g) override
Adds a geometry and takes ownership.
#define RENDERER_TAG_NAME
void CORE_EXPORT save(QDomElement &elem) const
Serialize to XML.
A rectangle specified with double values.
QgsPointDisplacementRenderer * clone() const override
~QgsPointDisplacementRenderer()
QList< QgsFeatureId > intersects(const QgsRectangle &rect) const
Returns features that intersect the specified rectangle.
QgsFeatureRequest::OrderBy orderBy() const
Get the order in which features shall be processed by this renderer.
QList< QgsSymbolV2 * > QgsSymbolV2List
QDomNode appendChild(const QDomNode &newChild)
void push_back(const T &value)
QString attribute(const QString &name, const QString &defValue) const
static QgsFeatureRendererV2 * create(QDomElement &symbologyElem)
create a renderer from XML element
static double mapUnitScaleFactor(const QgsRenderContext &c, QgsSymbolV2::OutputUnit u, const QgsMapUnitScale &scale=QgsMapUnitScale())
Returns scale factor painter units -> map units.
virtual Q_DECL_DEPRECATED QgsSymbolV2 * originalSymbolForFeature(QgsFeature &feature)
Return symbol for feature.
void setLabelAttributeName(const QString &name)
static QString encodeColor(const QColor &color)
int fieldNameIndex(const QString &fieldName) const
Look up field's index from name also looks up case-insensitive if there is no match otherwise...
double rendererScale() const
void setLabelFont(const QFont &f)
virtual QDomElement save(QDomDocument &doc)
store renderer info to XML element
void setCenterSymbol(QgsMarkerSymbolV2 *symbol)
Sets the center symbol (takes ownership)
void scale(qreal sx, qreal sy)
const_iterator constBegin() const
const T & at(int i) const
static bool isDefaultStack(QgsPaintEffect *effect)
Tests whether a paint effect matches the default effects stack.
QgsLegendSymbologyList legendSymbologyItems(QSize iconSize) override
return a list of symbology items for the legend
#define FID_TO_STRING(fid)
static QDomElement saveSymbol(const QString &symbolName, QgsSymbolV2 *symbol, QDomDocument &doc)
void setMaxLabelScaleDenominator(double d)
QgsMapUnitScale mapUnitScale() const
Container of fields for a vector layer.
A geometry is the spatial representation of a feature.
static QgsPointDisplacementRenderer * convertFromRenderer(const QgsFeatureRendererV2 *renderer)
creates a QgsPointDisplacementRenderer from an existing renderer.
WkbType
Used for symbology operations.
QDomElement save(QDomDocument &doc) override
store renderer info to XML element
virtual QgsSymbolV2List symbolsForFeature(QgsFeature &feat, QgsRenderContext &context) override
Proxy that will call this method on the embedded renderer.
static QString encodeMapUnitScale(const QgsMapUnitScale &mapUnitScale)
virtual QList< QString > usedAttributes()=0
Returns a set of attributes required for this renderer.
Multi point geometry collection.
QgsPointDisplacementRenderer(const QString &labelAttributeName="")
const_iterator insert(const T &value)
The feature class encapsulates a single feature including its id, geometry and a list of field/values...
double toDouble(bool *ok) const
virtual void startRender(QgsRenderContext &context, const QgsFields &fields) override
Needs to be called when a new render cycle is started.
virtual Q_DECL_DEPRECATED bool willRenderFeature(QgsFeature &feat)
Returns whether the renderer will render a feature or not.
qreal width(const QString &text) const
QgsPaintEffect * mPaintEffect
double x() const
Get the x value of the point.
virtual QgsLegendSymbologyList legendSymbologyItems(QSize iconSize)
return a list of symbology items for the legend
virtual void startRender(QgsRenderContext &context, const QgsFields &fields)=0
Needs to be called when a new render cycle is started.
void setToleranceUnit(QgsSymbolV2::OutputUnit unit)
Sets the units for the tolerance distance.
virtual void stopRender(QgsRenderContext &context)=0
Needs to be called when a render cycle has finished to clean up.
static QgsSymbolV2::OutputUnit decodeOutputUnit(const QString &str)
virtual Q_DECL_DEPRECATED QgsSymbolV2List originalSymbolsForFeature(QgsFeature &feat)
Equivalent of originalSymbolsForFeature() call extended to support renderers that may use more symbol...
void drawRect(const QRectF &rectangle)
void setPixelSize(int pixelSize)
virtual QgsFeatureRendererV2 * clone() const =0
void setFont(const QFont &font)
The output shall be in millimeters.
QString number(int n, int base)
virtual Q_DECL_DEPRECATED QgsSymbolV2 * symbolForFeature(QgsFeature &feature)
To be overridden.
void append(const T &value)
virtual QgsSymbolV2List originalSymbolsForFeature(QgsFeature &feat, QgsRenderContext &context) override
Proxy that will call this method on the embedded renderer.
void startRender(QgsRenderContext &context, const QgsFields *fields=nullptr)
bool fromString(const QString &descrip)
void setEmbeddedRenderer(QgsFeatureRendererV2 *r)
Sets embedded renderer (takes ownership)
void drawArc(const QRectF &rectangle, int startAngle, int spanAngle)
static double convertToPainterUnits(const QgsRenderContext &c, double size, QgsSymbolV2::OutputUnit unit, const QgsMapUnitScale &scale=QgsMapUnitScale())
Converts a size from the specied units to painter units.
virtual QgsLegendSymbolList legendSymbolItems(double scaleDenominator=-1, const QString &rule="")
return a list of item text / symbol
QgsAttributes attributes() const
Returns the feature's attributes.
void setPen(const QColor &color)
void setAttribute(const QString &name, const QString &value)
int toInt(bool *ok, int base) const
const_iterator constEnd() const
virtual void toSld(QDomDocument &doc, QDomElement &element) const override
used from subclasses to create SLD Rule elements following SLD v1.1 specs
void setLabelColor(const QColor &c)
void setWidthF(qreal width)
virtual QgsSymbolV2 * originalSymbolForFeature(QgsFeature &feat, QgsRenderContext &context) override
Proxy that will call this method on the embedded renderer.
void drawText(const QPointF &position, const QString &text)
double rasterScaleFactor() const
static bool setFromXmlChildNode(QFont &font, const QDomElement &element, const QString &childNode)
Sets the properties of a font to match the properties stored in an XML child node.
QGis::WkbType wkbType() const
Returns type of the geometry as a WKB type (point / linestring / polygon etc.)
void setPlacement(Placement placement)
Sets the placement method used for dispersing the points.
QgsGeometry * centroid() const
Returns the center of mass of a geometry.
static QgsFeatureRendererV2 * defaultRenderer(QGis::GeometryType geomType)
return a new renderer - used by default in vector layers
virtual Q_DECL_DEPRECATED QgsSymbolV2List symbols()
For symbol levels.
A class to represent a point.
bool renderFeature(QgsFeature &feature, QgsRenderContext &context, int layer=-1, bool selected=false, bool drawVertexMarker=false) override
Reimplemented from QgsFeatureRendererV2.
virtual bool willRenderFeature(QgsFeature &feat, QgsRenderContext &context) override
Proxy that will call this method on the embedded renderer.
QList< QPair< QString, QPixmap > > QgsLegendSymbologyList
void setCircleRadiusAddition(double d)
void stopRender(QgsRenderContext &context) override
Needs to be called when a render cycle has finished to clean up.
void copyRendererData(QgsFeatureRendererV2 *destRenderer) const
Clones generic renderer data to another renderer.
virtual void toSld(QDomDocument &doc, QDomElement &element) const
used from subclasses to create SLD Rule elements following SLD v1.1 specs
A renderer that automatically displaces points with the same position.
virtual QgsSymbolV2 * symbolForFeature(QgsFeature &feature, QgsRenderContext &context) override
Proxy that will call this method on the embedded renderer.
bool contains(const T &value) const
void setCircleWidth(double w)
const T & at(int i) const
virtual bool saveProperties(QDomDocument &doc, QDomElement &element) const
Saves the current state of the effect to a DOM element.
Contains information about the context of a rendering operation.
bool insertFeature(const QgsFeature &f)
Add feature to index.
void stopRender(QgsRenderContext &context)
int wkbSize() const
Returns the size of the WKB in asWkb().
QgsLegendSymbolList legendSymbolItems(double scaleDenominator=-1, const QString &rule="") override
virtual Q_DECL_DEPRECATED QgsSymbolV2List symbolsForFeature(QgsFeature &feat)
Returns list of symbols used for rendering the feature.
static QgsFeatureRendererV2 * load(QDomElement &symbologyElem)
create a renderer from XML element
void setCircleColor(const QColor &c)
QgsFeatureRequest::OrderBy mOrderBy
QgsRenderContext & renderContext()
QDomElement firstChildElement(const QString &tagName) const
int count(const T &value) const
QgsSymbolV2::OutputUnit outputUnit() const
const QgsGeometry * constGeometry() const
Gets a const pointer to the geometry object associated with this feature.
void renderPoint(QPointF point, const QgsFeature *f, QgsRenderContext &context, int layer=-1, bool selected=false)
void translate(const QPointF &offset)
double y() const
Get the y value of the point.
virtual int capabilities() override
Proxy that will call this method on the embedded renderer.
static QColor decodeColor(const QString &str)
iterator insert(const Key &key, const T &value)
void setToleranceMapUnitScale(const QgsMapUnitScale &scale)
Sets the map unit scale object for the distance tolerance.
static QDomElement toXmlElement(const QFont &font, QDomDocument &document, const QString &elementName)
Returns a DOM element containing the properties of the font.
double outputLineWidth(double width) const
static QgsMapUnitScale decodeMapUnitScale(const QString &str)
static QgsConstWkbPtr _getPoint(QPointF &pt, QgsRenderContext &context, QgsConstWkbPtr wkb)
const_iterator constEnd() const
virtual int capabilities()
returns bitwise OR-ed capabilities of the renderer
QDomElement createElement(const QString &tagName)
const_iterator constBegin() const
QgsPoint asPoint() const
Return contents of the geometry as a point if wkbType is WKBPoint, otherwise returns [0...
virtual QList< QString > usedAttributes() override
Partial proxy that will call this method on the embedded renderer.
QList< QPair< QString, QgsSymbolV2 * > > QgsLegendSymbolList
const unsigned char * asWkb() const
Returns the buffer containing this geometry in WKB format.
virtual QgsMarkerSymbolV2 * clone() const override
void setTolerance(double t)
Sets the tolerance distance for grouping points.