/
qgspallabeling.sip
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qgspallabeling.sip
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// QMap<QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined*> is implemented as a Python dictionary.
%MappedType QMap<QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined*> /DocType="dict-of-QgsPalLayerSettings.DataDefinedProperties-QgsDataDefined*"/
{
%TypeHeaderCode
#include <qmap.h>
#include <qgspallabeling.h>
#include <qgsdatadefined.h>
%End
%ConvertFromTypeCode
// Create the dictionary.
PyObject *d = PyDict_New();
if (!d)
return NULL;
// Set the dictionary elements.
QMap<QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined*>::const_iterator i = sipCpp->constBegin();
while (i != sipCpp->constEnd())
{
QgsDataDefined *t = i.value();
PyObject *kobj = sipConvertFromEnum(i.key(), sipType_QgsPalLayerSettings_DataDefinedProperties);
PyObject *tobj = sipConvertFromType(t, sipType_QgsDataDefined, sipTransferObj);
if (kobj == NULL || tobj == NULL || PyDict_SetItem(d, kobj, tobj) < 0)
{
Py_DECREF(d);
if (kobj)
{
Py_DECREF(kobj);
}
if (tobj)
{
Py_DECREF(tobj);
}
else
{
delete t;
}
return NULL;
}
Py_DECREF(kobj);
Py_DECREF(tobj);
++i;
}
return d;
%End
%ConvertToTypeCode
PyObject *kobj, *tobj;
SIP_SSIZE_T i = 0;
// Check the type if that is all that is required.
if (sipIsErr == NULL)
{
if (!PyDict_Check(sipPy))
return 0;
while (PyDict_Next(sipPy, &i, &kobj, &tobj))
if (!sipCanConvertToType(tobj, sipType_QgsDataDefined, SIP_NOT_NONE))
return 0;
return 1;
}
QMap<QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined*> *qm = new QMap<QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined*>;
while (PyDict_Next(sipPy, &i, &kobj, &tobj))
{
int state, k = SIPLong_AsLong(kobj);
QgsDataDefined *t = reinterpret_cast<QgsDataDefined *>(sipConvertToType(tobj, sipType_QgsDataDefined, sipTransferObj, SIP_NOT_NONE, &state, sipIsErr));
if (*sipIsErr)
{
sipReleaseType(t, sipType_QgsDataDefined, state);
delete qm;
return 0;
}
qm->insert(QgsPalLayerSettings::DataDefinedProperties(k), t);
sipReleaseType(t, sipType_QgsDataDefined, state);
}
*sipCppPtr = qm;
return sipGetState(sipTransferObj);
%End
};
class QgsPalLayerSettings
{
%TypeHeaderCode
#include <qgspallabeling.h>
#include <qgsdiagramrendererv2.h>
%End
public:
QgsPalLayerSettings();
QgsPalLayerSettings( const QgsPalLayerSettings& s );
~QgsPalLayerSettings();
//! @note added in 2.4
static QgsPalLayerSettings fromLayer( QgsVectorLayer* layer );
enum Placement
{
AroundPoint, // Point / Polygon
OverPoint, // Point / Polygon
Line, // Line / Polygon
Curved, // Line
Horizontal, // Polygon
Free // Polygon
};
enum LinePlacementFlags
{
OnLine,
AboveLine,
BelowLine,
MapOrientation,
};
enum QuadrantPosition
{
QuadrantAboveLeft,
QuadrantAbove,
QuadrantAboveRight,
QuadrantLeft,
QuadrantOver,
QuadrantRight,
QuadrantBelowLeft,
QuadrantBelow,
QuadrantBelowRight
};
enum UpsideDownLabels
{
Upright, // upside-down labels (90 <= angle < 270) are shown upright
ShowDefined, // show upside down when rotation is layer- or data-defined
ShowAll // show upside down for all labels, including dynamic ones
};
enum DirectionSymbols
{
SymbolLeftRight, // place direction symbols on left/right of label
SymbolAbove, // place direction symbols on above label
SymbolBelow // place direction symbols on below label
};
enum MultiLineAlign
{
MultiLeft,
MultiCenter,
MultiRight
};
enum ShapeType
{
ShapeRectangle,
ShapeSquare,
ShapeEllipse,
ShapeCircle,
ShapeSVG
};
enum SizeType
{
SizeBuffer,
SizeFixed,
SizePercent
};
enum RotationType
{
RotationSync,
RotationOffset,
RotationFixed
};
/** Units used for option sizes, before being converted to rendered sizes */
enum SizeUnit
{
Points,
MM,
MapUnits,
Percent
};
enum ShadowType
{
ShadowLowest,
ShadowText,
ShadowBuffer,
ShadowShape
};
// update mDataDefinedNames QMap in constructor when adding/deleting enum value
enum DataDefinedProperties
{
// text style
Size,
Bold,
Italic,
Underline,
Color,
Strikeout,
Family,
FontStyle,
FontSizeUnit,
FontTransp,
FontCase,
FontLetterSpacing,
FontWordSpacing,
FontBlendMode,
// text formatting
MultiLineWrapChar,
MultiLineHeight,
MultiLineAlignment,
DirSymbDraw,
DirSymbLeft,
DirSymbRight,
DirSymbPlacement,
DirSymbReverse,
NumFormat,
NumDecimals,
NumPlusSign,
// text buffer
BufferDraw,
BufferSize,
BufferUnit,
BufferColor,
BufferTransp,
BufferJoinStyle,
BufferBlendMode,
// background
ShapeDraw,
ShapeKind,
ShapeSVGFile,
ShapeSizeType,
ShapeSizeX,
ShapeSizeY,
ShapeSizeUnits,
ShapeRotationType,
ShapeRotation,
ShapeOffset,
ShapeOffsetUnits,
ShapeRadii,
ShapeRadiiUnits,
ShapeTransparency,
ShapeBlendMode,
ShapeFillColor,
ShapeBorderColor,
ShapeBorderWidth,
ShapeBorderWidthUnits,
ShapeJoinStyle,
// drop shadow
ShadowDraw,
ShadowUnder,
ShadowOffsetAngle,
ShadowOffsetDist,
ShadowOffsetUnits,
ShadowRadius,
ShadowRadiusUnits,
ShadowTransparency,
ShadowScale,
ShadowColor,
ShadowBlendMode,
// placement
CentroidWhole,
OffsetQuad,
OffsetXY,
OffsetUnits,
LabelDistance,
DistanceUnits,
OffsetRotation,
CurvedCharAngleInOut,
// (data defined only)
PositionX, //x-coordinate data defined label position
PositionY, //y-coordinate data defined label position
Hali, //horizontal alignment for data defined label position (Left, Center, Right)
Vali, //vertical alignment for data defined label position (Bottom, Base, Half, Cap, Top)
Rotation, //data defined rotation
RepeatDistance,
RepeatDistanceUnit,
// rendering
ScaleVisibility,
MinScale,
MaxScale,
FontLimitPixel,
FontMinPixel,
FontMaxPixel,
// (data defined only)
Show,
AlwaysShow
};
// whether to label this layer
bool enabled;
//-- text style
QString fieldName;
/** Is this label made from a expression string eg FieldName || 'mm'
*/
bool isExpression;
/** Returns the QgsExpression for this label settings.
*/
QgsExpression* getLabelExpression();
QFont textFont;
QString textNamedStyle;
bool fontSizeInMapUnits; //true if font size is in map units (otherwise in points)
QgsMapUnitScale fontSizeMapUnitScale; // scale range for map units for font size
QColor textColor;
int textTransp;
QPainter::CompositionMode blendMode;
QColor previewBkgrdColor;
//-- text formatting
QString wrapChar;
double multilineHeight; //0.0 to 10.0, leading between lines as multiplyer of line height
MultiLineAlign multilineAlign; // horizontal alignment of multi-line labels
// Adds '<' or '>', or user-defined symbol to the label string pointing to the
// direction of the line / polygon ring
// Works only if Placement == Line
bool addDirectionSymbol;
QString leftDirectionSymbol;
QString rightDirectionSymbol;
DirectionSymbols placeDirectionSymbol; // whether to place left/right, above or below label
bool reverseDirectionSymbol;
bool formatNumbers;
int decimals;
bool plusSign;
//-- text buffer
bool bufferDraw;
double bufferSize; // buffer size
bool bufferSizeInMapUnits; //true if buffer is in map units (otherwise in mm)
QgsMapUnitScale bufferSizeMapUnitScale; // scale range for map units for buffer size
QColor bufferColor;
bool bufferNoFill; //set interior of buffer to 100% transparent
int bufferTransp;
Qt::PenJoinStyle bufferJoinStyle;
QPainter::CompositionMode bufferBlendMode;
//-- shape background
bool shapeDraw;
ShapeType shapeType;
QString shapeSVGFile;
SizeType shapeSizeType;
QPointF shapeSize;
SizeUnit shapeSizeUnits;
QgsMapUnitScale shapeSizeMapUnitScale;
RotationType shapeRotationType;
double shapeRotation;
QPointF shapeOffset;
SizeUnit shapeOffsetUnits;
QgsMapUnitScale shapeOffsetMapUnitScale;
QPointF shapeRadii;
SizeUnit shapeRadiiUnits;
QgsMapUnitScale shapeRadiiMapUnitScale;
int shapeTransparency;
QPainter::CompositionMode shapeBlendMode;
QColor shapeFillColor;
QColor shapeBorderColor;
double shapeBorderWidth;
SizeUnit shapeBorderWidthUnits;
QgsMapUnitScale shapeBorderWidthMapUnitScale;
Qt::PenJoinStyle shapeJoinStyle;
//-- drop shadow
bool shadowDraw;
ShadowType shadowUnder;
int shadowOffsetAngle;
double shadowOffsetDist;
SizeUnit shadowOffsetUnits;
QgsMapUnitScale shadowOffsetMapUnitScale;
bool shadowOffsetGlobal;
double shadowRadius;
SizeUnit shadowRadiusUnits;
QgsMapUnitScale shadowRadiusMapUnitScale;
bool shadowRadiusAlphaOnly;
int shadowTransparency;
int shadowScale;
QColor shadowColor;
QPainter::CompositionMode shadowBlendMode;
//-- placement
Placement placement;
unsigned int placementFlags;
bool centroidWhole; // whether centroid calculated from whole or visible polygon
bool centroidInside; // whether centroid-point calculated must be inside polygon
double dist; // distance from the feature (in mm)
bool distInMapUnits; //true if distance is in map units (otherwise in mm)
QgsMapUnitScale distMapUnitScale;
double repeatDistance;
SizeUnit repeatDistanceUnit;
QgsMapUnitScale repeatDistanceMapUnitScale;
// offset labels of point/centroid features default to center
// move label to quadrant: left/down, don't move, right/up (-1, 0, 1)
QuadrantPosition quadOffset;
double xOffset; // offset from point in mm or map units
double yOffset; // offset from point in mm or map units
bool labelOffsetInMapUnits; //true if label offset is in map units (otherwise in mm)
QgsMapUnitScale labelOffsetMapUnitScale;
double angleOffset; // rotation applied to offset labels
bool preserveRotation; // preserve predefined rotation data during label pin/unpin operations
double maxCurvedCharAngleIn; // maximum angle between inside curved label characters (defaults to 20.0, range 20.0 to 60.0)
double maxCurvedCharAngleOut; // maximum angle between outside curved label characters (defaults to -20.0, range -20.0 to -95.0)
int priority; // 0 = low, 10 = high
//-- rendering
bool scaleVisibility;
int scaleMin;
int scaleMax;
bool fontLimitPixelSize; // true is label should be limited by fontMinPixelSize/fontMaxPixelSize
int fontMinPixelSize; // minimum pixel size for showing rendered map unit labels (1 - 1000)
int fontMaxPixelSize; // maximum pixel size for showing rendered map unit labels (1 - 10000)
bool displayAll; // if true, all features will be labelled even though overlaps occur
unsigned int upsidedownLabels; // whether, or how, to show upsidedown labels
bool labelPerPart; // whether to label every feature's part or only the biggest one
bool mergeLines;
bool limitNumLabels; // whether to limit the number of labels to be drawn
int maxNumLabels; // maximum number of labels to be drawn
double minFeatureSize; // minimum feature size to be labelled (in mm)
bool obstacle; // whether features for layer are obstacles to labels of other layers
//-- scale factors
double vectorScaleFactor; //scale factor painter units->pixels
double rasterCompressFactor; //pixel resolution scale factor
// called from register feature hook
void calculateLabelSize( const QFontMetricsF* fm, QString text, double& labelX, double& labelY, QgsFeature* f = 0 );
// implementation of register feature hook
void registerFeature( QgsFeature& f, const QgsRenderContext& context, QString dxfLayer );
void readFromLayer( QgsVectorLayer* layer );
void writeToLayer( QgsVectorLayer* layer );
/** Get a data defined property pointer
* @note added in 1.9, helpful for Python access
*/
QgsDataDefined* dataDefinedProperty( QgsPalLayerSettings::DataDefinedProperties p );
/** Set a property as data defined
* @note added in 1.9, helpful for Python access
*/
void setDataDefinedProperty( QgsPalLayerSettings::DataDefinedProperties p,
bool active, bool useExpr, const QString& expr, const QString& field );
/** Set a property to static instead data defined */
void removeDataDefinedProperty( QgsPalLayerSettings::DataDefinedProperties p );
/** Convert old property value to new one as delimited values
* @note not available in python bindings; added in 1.9, as temporary solution until refactoring of project settings
*/
QString updateDataDefinedString( const QString& value );
/** Get property value as separate values split into Qmap
* @note not available in python bindings; added in 1.9
*/
QMap<QString, QString> dataDefinedMap( QgsPalLayerSettings::DataDefinedProperties p ) const;
/** Get data defined property value from expression string or attribute field name
* @returns value inside QVariant
* @note not available in python bindings; added in 1.9
*/
QVariant dataDefinedValue( QgsPalLayerSettings::DataDefinedProperties p, QgsFeature& f, const QgsFields& fields ) const;
/** Get data defined property value from expression string or attribute field name
* @returns true/false whether result is null or invalid
* @note not available in python bindings; added in 1.9
*/
bool dataDefinedEvaluate( QgsPalLayerSettings::DataDefinedProperties p, QVariant& exprVal ) const;
/** Whether data definition is active
*/
bool dataDefinedIsActive( QgsPalLayerSettings::DataDefinedProperties p ) const;
/** Whether data definition is set to use an expression
*/
bool dataDefinedUseExpression( QgsPalLayerSettings::DataDefinedProperties p ) const;
/** Map of current data defined properties
*/
QMap< QgsPalLayerSettings::DataDefinedProperties, QgsDataDefined* > dataDefinedProperties;
/** Calculates pixel size (considering output size should be in pixel or map units, scale factors and optionally oversampling)
* @param size size to convert
* @param c rendercontext
* @param unit SizeUnit enum value of size
* @param rasterfactor whether to consider oversampling
* @param mapUnitScale a mapUnitScale clamper
* @return font pixel size
*/
int sizeToPixel( double size, const QgsRenderContext& c , SizeUnit unit, bool rasterfactor = false, const QgsMapUnitScale& mapUnitScale = QgsMapUnitScale() ) const;
/** Calculates size (considering output size should be in pixel or map units, scale factors and optionally oversampling)
* @param size size to convert
* @param c rendercontext
* @param unit SizeUnit enum value of size
* @param rasterfactor whether to consider oversampling
* @param mapUnitScale a mapUnitScale clamper
* @return size that will render, as double
* @note added in 1.9, as a better precision replacement for sizeToPixel
*/
double scaleToPixelContext( double size, const QgsRenderContext& c, SizeUnit unit, bool rasterfactor = false, const QgsMapUnitScale& mapUnitScale = QgsMapUnitScale() ) const;
/** Map of data defined enum to names and old-style indecies
* The QPair contains a new string for layer property key, and a reference to old-style numeric key (< QGIS 2.0)
* @note not available in python bindings; added in 1.9
*/
// QMap<QgsPalLayerSettings::DataDefinedProperties, QPair<QString, int> > dataDefinedNames() const;
};
class QgsLabelCandidate
{
%TypeHeaderCode
#include <qgspallabeling.h>
%End
public:
QgsLabelCandidate( QRectF r, double c );
QRectF rect;
double cost;
};
/** \ingroup core
* Maintains current state of more grainular and temporal values when creating/painting
* component parts of an individual label (e.g. buffer, background, shadow, etc.).
*/
class QgsLabelComponent
{
%TypeHeaderCode
#include <qgspallabeling.h>
%End
public:
QgsLabelComponent();
// methods
const QString& text();
void setText( const QString& text );
const QgsPoint& origin();
void setOrigin( QgsPoint point );
bool useOrigin() const;
void setUseOrigin( bool use );
double rotation() const;
void setRotation( double rotation );
double rotationOffset() const;
void setRotationOffset( double rotation );
bool useRotation() const;
void setUseRotation( bool use );
const QgsPoint& center();
void setCenter( QgsPoint point );
bool useCenter() const;
void setUseCenter( bool use );
const QgsPoint& size();
void setSize( QgsPoint point );
const QgsPoint& offset();
void setOffset( QgsPoint point );
const QPicture* picture();
void setPicture( QPicture* picture );
double pictureBuffer() const;
void setPictureBuffer( double buffer );
double dpiRatio() const;
void setDpiRatio( double ratio );
};
/**
* Class that stores computed placement from labeling engine.
* @note added in 2.4
*/
class QgsLabelingResults
{
%TypeHeaderCode
#include <qgspallabeling.h>
%End
public:
QgsLabelingResults();
~QgsLabelingResults();
//! return infos about labels at a given (map) position
QList<QgsLabelPosition> labelsAtPosition( const QgsPoint& p ) const;
//! return infos about labels within a given (map) rectangle
QList<QgsLabelPosition> labelsWithinRect( const QgsRectangle& r ) const;
private:
QgsLabelingResults( const QgsLabelingResults& );
};
class QgsPalLabeling : QgsLabelingEngineInterface
{
%TypeHeaderCode
#include <qgspallabeling.h>
%End
public:
enum DrawLabelType
{
LabelText,
LabelBuffer,
LabelShape,
LabelSVG,
LabelShadow
};
QgsPalLabeling();
~QgsPalLabeling();
QgsPalLayerSettings& layer( const QString& layerName );
void numCandidatePositions( int& candPoint, int& candLine, int& candPolygon );
void setNumCandidatePositions( int candPoint, int candLine, int candPolygon );
enum Search { Chain, Popmusic_Tabu, Popmusic_Chain, Popmusic_Tabu_Chain, Falp };
void setSearchMethod( Search s );
Search searchMethod() const;
bool isShowingCandidates() const;
void setShowingCandidates( bool showing );
const QList<QgsLabelCandidate>& candidates();
bool isShowingShadowRectangles() const;
void setShowingShadowRectangles( bool showing );
bool isShowingAllLabels() const;
void setShowingAllLabels( bool showing );
bool isShowingPartialsLabels() const;
void setShowingPartialsLabels( bool showing );
//! @note added in 2.4
bool isDrawingOutlineLabels() const;
void setDrawingOutlineLabels( bool outline );
// implemented methods from labeling engine interface
//! called when we're going to start with rendering
//! @deprecated since 2.4 - use override with QgsMapSettings
virtual void init( QgsMapRenderer* mr ) /Deprecated/;
//! called when we're going to start with rendering
virtual void init( const QgsMapSettings& mapSettings );
//! called to find out whether the layer is used for labeling
virtual bool willUseLayer( QgsVectorLayer* layer );
//! called to find out whether the layer is used for labeling
//! @note added in 2.4
static bool staticWillUseLayer( QgsVectorLayer* layer );
static bool staticWillUseLayer( const QString& layerID );
//! clears all PAL layer settings for registered layers
//! @note: this method was added in version 1.9
virtual void clearActiveLayers();
//! clears data defined objects from PAL layer settings for a registered layer
//! @note: this method was added in version 1.9
virtual void clearActiveLayer( const QString& layerID );
//! hook called when drawing layer before issuing select()
virtual int prepareLayer( QgsVectorLayer* layer, QStringList &attrNames, QgsRenderContext& ctx );
//! adds a diagram layer to the labeling engine
virtual int addDiagramLayer( QgsVectorLayer* layer, const QgsDiagramLayerSettings *s );
//! hook called when drawing for every feature in a layer
virtual void registerFeature( const QString& layerID, QgsFeature& feat, const QgsRenderContext& context = QgsRenderContext(), QString dxfLayer = QString::null );
virtual void registerDiagramFeature( const QString& layerID, QgsFeature& feat, const QgsRenderContext& context = QgsRenderContext() );
//! called when the map is drawn and labels should be placed
virtual void drawLabeling( QgsRenderContext& context );
//! called when we're done with rendering
virtual void exit();
//! return infos about labels at a given (map) position
//! @deprecated since 2.4 - use takeResults() and methods of QgsLabelingResults
virtual QList<QgsLabelPosition> labelsAtPosition( const QgsPoint& p ) /Deprecated/;
//! return infos about labels within a given (map) rectangle
//! @deprecated since 2.4 - use takeResults() and methods of QgsLabelingResults
virtual QList<QgsLabelPosition> labelsWithinRect( const QgsRectangle& r ) /Deprecated/;
//! Return pointer to recently computed results (in drawLabeling()) and pass the ownership of results to the caller
//! @note added in 2.4
QgsLabelingResults* takeResults() /TransferBack/;
//! called when passing engine among map renderers
virtual QgsLabelingEngineInterface* clone() /Factory/;
//! @note not available in python bindings
// void drawLabelCandidateRect( pal::LabelPosition* lp, QPainter* painter, const QgsMapToPixel* xform );
//!drawLabel
//! @note not available in python bindings
// void drawLabel( pal::LabelPosition* label, QgsRenderContext& context, QgsPalLayerSettings& tmpLyr, DrawLabelType drawType );
static void drawLabelBuffer( QgsRenderContext& context,
QgsLabelComponent component,
const QgsPalLayerSettings& tmpLyr );
static void drawLabelBackground( QgsRenderContext& context,
QgsLabelComponent component,
const QgsPalLayerSettings& tmpLyr );
static void drawLabelShadow( QgsRenderContext& context,
QgsLabelComponent component,
const QgsPalLayerSettings& tmpLyr );
//! load/save engine settings to project file
//! @note added in QGIS 1.9
void loadEngineSettings();
void saveEngineSettings();
void clearEngineSettings();
//! @deprecated since 2.4 - settings are always stored in project
bool isStoredWithProject() const /Deprecated/;
//! @deprecated since 2.4 - settings are always stored in project
void setStoredWithProject( bool store ) /Deprecated/;
protected:
// update temporary QgsPalLayerSettings with any data defined text style values
void dataDefinedTextStyle( QgsPalLayerSettings& tmpLyr,
const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant >& ddValues );
// update temporary QgsPalLayerSettings with any data defined text formatting values
void dataDefinedTextFormatting( QgsPalLayerSettings& tmpLyr,
const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant >& ddValues );
// update temporary QgsPalLayerSettings with any data defined text buffer values
void dataDefinedTextBuffer( QgsPalLayerSettings& tmpLyr,
const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant >& ddValues );
// update temporary QgsPalLayerSettings with any data defined shape background values
void dataDefinedShapeBackground( QgsPalLayerSettings& tmpLyr,
const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant >& ddValues );
// update temporary QgsPalLayerSettings with any data defined drop shadow values
void dataDefinedDropShadow( QgsPalLayerSettings& tmpLyr,
const QMap< QgsPalLayerSettings::DataDefinedProperties, QVariant >& ddValues );
void deleteTemporaryData();
};