SkyQPainter Class Reference

#include <skyqpainter.h>

Inheritance diagram for SkyQPainter:

Public Member Functions
	SkyQPainter (QPaintDevice *pd, const QSize &canvasSize)
	SkyQPainter (QPaintDevice *pd)
	SkyQPainter (QWidget *widget, QPaintDevice *pd=0)
virtual	~SkyQPainter ()
virtual void	begin ()
virtual bool	drawDeepSkyObject (DeepSkyObject *obj, bool drawImage=false)
virtual void	drawDeepSkySymbol (const QPointF &pos, int type, float size, float e, float positionAngle)
virtual void	drawFlags ()
virtual void	drawHorizon (bool filled, SkyPoint *labelPoint=0, bool *drawLabel=0)
virtual void	drawObservingList (const QList< SkyObject * > &obs)
virtual bool	drawPlanet (KSPlanetBase *planet)
virtual bool	drawPointSource (SkyPoint *loc, float mag, char sp= 'A')
virtual void	drawPointSource (const QPointF &pos, float size, char sp= 'A')
virtual void	drawSatellite (Satellite *sat)
virtual void	drawSkyBackground ()
virtual void	drawSkyLine (SkyPoint *a, SkyPoint *b)
virtual void	drawSkyPolygon (LineList *list)
virtual void	drawSkyPolyline (LineList *list, SkipList *skipList=0, LineListLabel *label=0)
virtual bool	drawSupernova (Supernova *sup)
virtual void	end ()
bool	getVectorStars () const
virtual void	setBrush (const QBrush &brush)
virtual void	setPen (const QPen &pen)
void	setVectorStars (bool vectorStars)
Public Member Functions inherited from SkyPainter
	SkyPainter ()
virtual	~SkyPainter ()
void	setSizeMagLimit (float sizeMagLim)
float	starWidth (float mag) const

Static Public Member Functions
static void	initStarImages ()

Additional Inherited Members
Protected Attributes inherited from SkyPainter
SkyMap *	m_sm

Detailed Description

The QPainter-based painting backend.

This class implements the SkyPainter interface using a QPainter. For documentation,

See also

SkyPainter.

Definition at line 32 of file skyqpainter.h.

Constructor & Destructor Documentation

SkyQPainter::SkyQPainter	(	QPaintDevice *	pd,
		const QSize &	canvasSize
	)

Creates a SkyQPainter with the given QPaintDevice and uses the dimensions of the paint device as canvas dimensions.

Parameters

pd	the painting device. Cannot be 0
canvasSize	the size of the canvas

Definition at line 87 of file skyqpainter.cpp.

SkyQPainter::SkyQPainter

(

QPaintDevice *

pd

)

Creates a SkyQPainter with the given QPaintDevice and given canvas size.

Parameters

pd	the painting device. Cannot be 0

Definition at line 78 of file skyqpainter.cpp.

SkyQPainter::SkyQPainter ( QWidget *  widget, QPaintDevice *  pd = 0  )

explicit

Creates a SkyQPainter given a QWidget and an optional QPaintDevice.

Parameters

widget	the QWidget that provides the canvas size, and also the paint device unless pd is specified
pd	the painting device. If 0, then widget will be used.

Definition at line 96 of file skyqpainter.cpp.

SkyQPainter::~SkyQPainter ( )

virtual

Definition at line 106 of file skyqpainter.cpp.

Member Function Documentation

void SkyQPainter::begin ( )

virtual

Begin painting.

Note

this function must be called before painting anything.

See also

end()

Implements SkyPainter.

Definition at line 110 of file skyqpainter.cpp.

bool SkyQPainter::drawDeepSkyObject ( DeepSkyObject *  obj, bool  drawImage = false  )

virtual

Draw a deep sky object.

Parameters

obj	the object to draw
drawImage	if true, try to draw the image of the object

Returns

true if it was drawn

Implements SkyPainter.

Definition at line 424 of file skyqpainter.cpp.

void SkyQPainter::drawDeepSkySymbol ( const QPointF &  pos, int  type, float  size, float  e, float  positionAngle  )

virtual

Definition at line 468 of file skyqpainter.cpp.

void SkyQPainter::drawFlags ( )

virtual

Draw flags.

Implements SkyPainter.

Definition at line 718 of file skyqpainter.cpp.

void SkyQPainter::drawHorizon ( bool  filled, SkyPoint *  labelPoint = 0, bool *  drawLabel = 0  )

virtual

Implements SkyPainter.

Definition at line 750 of file skyqpainter.cpp.

void SkyQPainter::drawObservingList ( const QList< SkyObject * > &  obs )

virtual

Draw the symbols for the observing list.

Parameters

obs	the oberving list

Implements SkyPainter.

Definition at line 703 of file skyqpainter.cpp.

bool SkyQPainter::drawPlanet ( KSPlanetBase *  planet )

virtual

Draw a planet.

Parameters

planet

the planet to draw

Returns

true if it was drawn

Implements SkyPainter.

Definition at line 320 of file skyqpainter.cpp.

bool SkyQPainter::drawPointSource ( SkyPoint *  loc, float  mag, char  sp = 'A'  )

virtual

Draw a point source (e.g., a star).

Parameters

loc	the location of the source in the sky
mag	the magnitude of the source
sp	the spectral class of the source

Returns

true if a source was drawn

Implements SkyPainter.

Definition at line 371 of file skyqpainter.cpp.

void SkyQPainter::drawPointSource ( const QPointF &  pos, float  size, char  sp = 'A'  )

virtual

This function exists so that we can draw other objects (e.g., planets) as point sources.

Definition at line 386 of file skyqpainter.cpp.

void SkyQPainter::drawSatellite ( Satellite *  sat )

virtual

Draw a satellite.

Implements SkyPainter.

Definition at line 766 of file skyqpainter.cpp.

void SkyQPainter::drawSkyBackground ( )

virtual

Draw the sky background.

Implements SkyPainter.

Definition at line 124 of file skyqpainter.cpp.

void SkyQPainter::drawSkyLine ( SkyPoint *  a, SkyPoint *  b  )

virtual

Draw a line between points in the sky.

Parameters

a	the first point
b	the second point

Note

this function will skip lines not on screen and clip lines that are only partially visible.

Implements SkyPainter.

Definition at line 231 of file skyqpainter.cpp.

void SkyQPainter::drawSkyPolygon ( LineList *  list )

virtual

Draw a polygon in the sky.

Parameters

list	a list of points in the sky

See also

drawSkyPolyline()

Implements SkyPainter.

Definition at line 282 of file skyqpainter.cpp.

void SkyQPainter::drawSkyPolyline ( LineList *  list, SkipList *  skipList = 0, LineListLabel *  label = 0  )

virtual

Draw a polyline in the sky.

Parameters

list	a list of points in the sky
skipList	a SkipList object used to control skipping line segments
label	a pointer to the label for this line

Note

it's more efficient to use this than repeated calls to drawSkyLine(), because it avoids an extra points->size() -2 projections.

Implements SkyPainter.

Definition at line 249 of file skyqpainter.cpp.

bool SkyQPainter::drawSupernova ( Supernova *  sup )

virtual

Draw a Supernova.

Implements SkyPainter.

Definition at line 796 of file skyqpainter.cpp.

void SkyQPainter::end ( )

virtual

End and finalize painting.

Note

this function must be called after painting anything.

it is not guaranteed that anything will actually be drawn until end() is called.

See also

begin();

Implements SkyPainter.

Definition at line 119 of file skyqpainter.cpp.

bool SkyQPainter::getVectorStars ( ) const

inline

Definition at line 65 of file skyqpainter.h.

void SkyQPainter::initStarImages ( )

static

Recalculates the star pixmaps.

Definition at line 140 of file skyqpainter.cpp.

void SkyQPainter::setBrush ( const QBrush &  brush )

virtual

Set the brush of the painter.

Implements SkyPainter.

Definition at line 135 of file skyqpainter.cpp.

void SkyQPainter::setPen ( const QPen &  pen )

virtual

Set the pen of the painter.

Implements SkyPainter.

Definition at line 130 of file skyqpainter.cpp.

void SkyQPainter::setVectorStars ( bool  vectorStars )

inline

Parameters

vectorStars

Draw stars as vector graphics whenever possible.

Note

Drawing stars as vectors is slower, but is better when saving .svg files. Set to true only when you are drawing on a canvas where speed doesn't matter. Definitely not when drawing on the SkyMap.

Definition at line 64 of file skyqpainter.h.

---

The documentation for this class was generated from the following files:

• skyqpainter.h
• skyqpainter.cpp