16 #ifndef QGSMAPRENDER_H
17 #define QGSMAPRENDER_H
21 #include <QStringList>
49 QgsLabelPosition(
int id,
double r,
const QVector< QgsPoint >& corners,
const QgsRectangle& rect,
double w,
double h,
const QString& layer,
const QString& labeltext,
const QFont& labelfont,
bool upside_down,
bool diagram =
false,
bool pinned =
false ):
50 featureId( id ), rotation( r ), cornerPoints( corners ), labelRect( rect ), width( w ), height( h ), layerID( layer ), labelText( labeltext ), labelFont( labelfont ), upsideDown( upside_down ), isDiagram( diagram ), isPinned( pinned ) {}
51 QgsLabelPosition(): featureId( -1 ), rotation( 0 ), labelRect(
QgsRectangle() ), width( 0 ), height( 0 ), layerID(
"" ), labelText(
"" ), labelFont(
QFont() ), upsideDown( false ), isDiagram( false ), isPinned( false ) {}
81 virtual void clearActiveLayers() = 0;
83 virtual void clearActiveLayer(
const QString& layerID ) = 0;
90 { Q_UNUSED( layer ); Q_UNUSED( s );
return 0; }
95 { Q_UNUSED( layerID ); Q_UNUSED( feat ); Q_UNUSED( context ); }
99 virtual void exit() = 0;
179 void render(
QPainter* painter,
double* forceWidthScale = 0 );
190 void setRotation(
double degrees );
194 double rotation()
const;
199 double scale()
const {
return mScale; }
205 int width()
const {
return (
int ) mSize.width(); }
206 int height()
const {
return (
int ) mSize.height(); }
217 void setOutputSize(
QSize size,
int dpi );
218 void setOutputSize(
QSizeF size,
double dpi );
267 void setProjectionsEnabled(
bool enabled );
270 bool hasCrsTransformEnabled()
const;
273 void setDestinationCrs(
const QgsCoordinateReferenceSystem& crs,
bool refreshCoordinateTransformInfo =
true,
bool transformExtent =
true );
292 void updateFullExtent();
315 void addLayerCoordinateTransform(
const QString& layerId,
const QString& srcAuthId,
const QString& destAuthId,
int srcDatumTransform = -1,
int destDatumTransform = -1 );
316 void clearLayerCoordinateTransforms();
335 void drawingProgress(
int current,
int total );
344 void hasCrsTransformEnabled(
bool flag );
349 void hasCrsTransformEnabledChanged(
bool flag );
351 void destinationSrsChanged();
356 void mapUnitsChanged();
363 void extentsChanged();
367 void rotationChanged(
double );
376 Q_DECL_DEPRECATED
void onDrawingProgress(
int current,
int total );
381 void adjustExtentToSize();
const QgsMapToPixel * coordinateTransform()
virtual ~QgsLabelingEngineInterface()
A rectangle specified with double values.
Base class for all map layer types.
QgsRenderContext * rendererContext()
Accessor for render context.
QgsLabelPosition(int id, double r, const QVector< QgsPoint > &corners, const QgsRectangle &rect, double w, double h, const QString &layer, const QString &labeltext, const QFont &labelfont, bool upside_down, bool diagram=false, bool pinned=false)
OutputUnits outputUnits() const
OutputUnits mOutputUnits
Output units.
bool mProjectionsEnabled
detemines whether on the fly projection support is enabled
QgsRectangle mLastExtent
Last extent to we drew so we know if we can used layer render caching or not.
QgsScaleCalculator * mScaleCalculator
scale calculator
void setScale(double scale)
Sets scale for scale based visibility.
static bool mDrawing
indicates drawing in progress
void enableOverviewMode(bool isOverview=true)
sets whether map image will be for overview
virtual int addDiagramLayer(QgsVectorLayer *layer, const QgsDiagramLayerSettings *s)
adds a diagram layer to the labeling engine
The feature class encapsulates a single feature including its id, geometry and a list of field/values...
A non GUI class for rendering a map layer set onto a QPainter.
QVector< QgsPoint > cornerPoints
BlendMode
Blending modes enum defining the available composition modes that can be used when rendering a layer...
QgsRectangle mExtent
current extent to be drawn
The QgsMapSettings class contains configuration for rendering of the map.
double mRotation
Map rotation.
QMutex mRenderMutex
Locks rendering loop for concurrent draws.
Perform transforms between map coordinates and device coordinates.
QgsCoordinateReferenceSystem * mDestCRS
destination spatial reference system of the projection
QgsDistanceArea * mDistArea
tool for measuring
double mapUnitsPerPixel() const
double scale() const
Scale denominator.
bool mOverview
indicates whether it's map image for overview
A class to represent a point.
OutputUnits
Output units for pen width and point marker width/height.
Calculates scale for a given combination of canvas size, map extent, and monitor dpi.
General purpose distance and area calculator.
Contains information about the context of a rendering operation.
QgsMapSettings mMapSettings
map settings - used only for export in mapSettings() for use in classes that deal with QgsMapSettings...
QgsLabelingEngineInterface * labelingEngine()
Labeling engine (NULL if there's no custom engine)
double mScale
Map scale denominator at its current zoom level.
QHash< QString, QgsLayerCoordinateTransform > mLayerCoordinateTransformInfo
Class for storing a coordinate reference system (CRS)
UnitType
Map units that qgis supports.
QStringList mLayerSet
stores array of layers to be rendered (identified by string)
double mMapUnitsPerPixel
map units per pixel
Labeling engine interface.
QgsRenderContext mRenderContext
Encapsulates context of rendering.
virtual void registerDiagramFeature(const QString &layerID, QgsFeature &feat, const QgsRenderContext &context=QgsRenderContext())
called for every diagram feature
Represents a vector layer which manages a vector based data sets.
QgsLabelingEngineInterface * mLabelingEngine
Labeling engine (NULL by default)
void setOutputUnits(OutputUnits u)
QgsRectangle mFullExtent
full extent of the layer set