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tdeedu/kstars/kstars/skymapevents.cpp

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/***************************************************************************
skymapevents.cpp - K Desktop Planetarium
-------------------
begin : Sat Feb 10 2001
copyright : (C) 2001 by Jason Harris
email : jharris@30doradus.org
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
//This file tqcontains Event handlers for the SkyMap class.
#include <stdlib.h>
#include <math.h> //using fabs()
#include <tqcursor.h>
#include <tqpainter.h>
#include <tqfile.h>
#include <kiconloader.h>
#include <kstatusbar.h>
#include <kshortcut.h> //KKey class
#include "skymap.h"
#include "Options.h"
#include "kstars.h"
#include "kstarsdata.h"
#include "ksutils.h"
#include "simclock.h"
#include "infoboxes.h"
#include "ksfilereader.h"
#include "kspopupmenu.h"
#include "ksmoon.h"
void SkyMap::resizeEvent( TQResizeEvent * )
{
computeSkymap = true; // skymap must be new computed
if ( testWState(WState_AutoMask) ) updateMask();
// avoid phantom positions of infoboxes
if ( ksw && ( isVisible() || width() == ksw->width() || height() == ksw->height() ) ) {
infoBoxes()->resize( width(), height() );
}
sky->resize( width(), height() );
sky2->resize( width(), height() );
}
void SkyMap::keyPressEvent( TQKeyEvent *e ) {
TQString s;
bool arrowKeyPressed( false );
bool shiftPressed( false );
float step = 1.0;
if ( e->state() & ShiftButton ) { step = 10.0; shiftPressed = true; }
//If the DCOP resume key was pressed, we process it here
if ( ! data->resumeKey.isNull() && e->key() == data->resumeKey.keyCodeQt() ) {
//kdDebug() << "resumeKey pressed; resuming DCOP." << endl;
ksw->resumeDCOP();
return;
}
switch ( e->key() ) {
case Key_Left :
if ( Options::useAltAz() ) {
focus()->setAz( dms( focus()->az()->Degrees() - step * MINZOOM/Options::zoomFactor() ).reduce() );
focus()->HorizontalToEquatorial( data->LST, data->geo()->lat() );
} else {
focus()->setRA( focus()->ra()->Hours() + 0.05*step * MINZOOM/Options::zoomFactor() );
focus()->EquatorialToHorizontal( data->LST, data->geo()->lat() );
}
arrowKeyPressed = true;
slewing = true;
++scrollCount;
break;
case Key_Right :
if ( Options::useAltAz() ) {
focus()->setAz( dms( focus()->az()->Degrees() + step * MINZOOM/Options::zoomFactor() ).reduce() );
focus()->HorizontalToEquatorial( data->LST, data->geo()->lat() );
} else {
focus()->setRA( focus()->ra()->Hours() - 0.05*step * MINZOOM/Options::zoomFactor() );
focus()->EquatorialToHorizontal( data->LST, data->geo()->lat() );
}
arrowKeyPressed = true;
slewing = true;
++scrollCount;
break;
case Key_Up :
if ( Options::useAltAz() ) {
focus()->setAlt( focus()->alt()->Degrees() + step * MINZOOM/Options::zoomFactor() );
if ( focus()->alt()->Degrees() > 90.0 ) focus()->setAlt( 90.0 );
focus()->HorizontalToEquatorial( data->LST, data->geo()->lat() );
} else {
focus()->setDec( focus()->dec()->Degrees() + step * MINZOOM/Options::zoomFactor() );
if (focus()->dec()->Degrees() > 90.0) focus()->setDec( 90.0 );
focus()->EquatorialToHorizontal( data->LST, data->geo()->lat() );
}
arrowKeyPressed = true;
slewing = true;
++scrollCount;
break;
case Key_Down:
if ( Options::useAltAz() ) {
focus()->setAlt( focus()->alt()->Degrees() - step * MINZOOM/Options::zoomFactor() );
if ( focus()->alt()->Degrees() < -90.0 ) focus()->setAlt( -90.0 );
focus()->HorizontalToEquatorial( data->LST, data->geo()->lat() );
} else {
focus()->setDec( focus()->dec()->Degrees() - step * MINZOOM/Options::zoomFactor() );
if (focus()->dec()->Degrees() < -90.0) focus()->setDec( -90.0 );
focus()->EquatorialToHorizontal( data->LST, data->geo()->lat() );
}
arrowKeyPressed = true;
slewing = true;
++scrollCount;
break;
case Key_Plus: //Zoom in
case Key_Equal:
if ( ksw ) ksw->slotZoomIn();
break;
case Key_Minus: //Zoom out
case Key_Underscore:
if ( ksw ) ksw->slotZoomOut();
break;
//In the following cases, we set slewing=true in order to disengage tracking
case Key_N: //center on north horizon
stopTracking();
setDestinationAltAz( 15.0, 0.0001 );
break;
case Key_E: //center on east horizon
stopTracking();
setDestinationAltAz( 15.0, 90.0 );
break;
case Key_S: //center on south horizon
stopTracking();
setDestinationAltAz( 15.0, 180.0 );
break;
case Key_W: //center on west horizon
stopTracking();
setDestinationAltAz( 15.0, 270.0 );
break;
case Key_Z: //center on Zenith
stopTracking();
setDestinationAltAz( 90.0, focus()->az()->Degrees() );
break;
case Key_0: //center on Sun
setClickedObject( data->PCat->findByName("Sun") );
setClickedPoint( clickedObject() );
slotCenter();
break;
case Key_1: //center on Mercury
setClickedObject( data->PCat->findByName("Mercury") );
setClickedPoint( clickedObject() );
slotCenter();
break;
case Key_2: //center on Venus
setClickedObject( data->PCat->findByName("Venus") );
setClickedPoint( clickedObject() );
slotCenter();
break;
case Key_3: //center on Moon
setClickedObject( data->Moon );
setClickedPoint( clickedObject() );
slotCenter();
break;
case Key_4: //center on Mars
setClickedObject( data->PCat->findByName("Mars") );
setClickedPoint( clickedObject() );
slotCenter();
break;
case Key_5: //center on Jupiter
setClickedObject( data->PCat->findByName("Jupiter") );
setClickedPoint( clickedObject() );
slotCenter();
break;
case Key_6: //center on Saturn
setClickedObject( data->PCat->findByName("Saturn") );
setClickedPoint( clickedObject() );
slotCenter();
break;
case Key_7: //center on Uranus
setClickedObject( data->PCat->findByName("Uranus") );
setClickedPoint( clickedObject() );
slotCenter();
break;
case Key_8: //center on Neptune
setClickedObject( data->PCat->findByName("Neptune") );
setClickedPoint( clickedObject() );
slotCenter();
break;
case Key_9: //center on Pluto
setClickedObject( data->PCat->findByName("Pluto") );
setClickedPoint( clickedObject() );
slotCenter();
break;
case Key_BracketLeft: // Begin measuring angular distance
if ( !isAngleMode() ) {
slotBeginAngularDistance();
}
break;
case Key_BracketRight: // End measuring angular distance
if ( isAngleMode() ) {
slotEndAngularDistance();
}
break;
case Key_Escape: // Cancel angular distance measurement
if (isAngleMode() ) {
slotCancelAngularDistance();
}
break;
case Key_Comma: //advance one step backward in time
case Key_Less:
if ( data->clock()->isActive() ) data->clock()->stop();
data->clock()->setScale( -1.0 * data->clock()->scale() ); //temporarily need negative time step
data->clock()->manualTick( true );
data->clock()->setScale( -1.0 * data->clock()->scale() ); //reset original sign of time step
update();
kapp->processEvents();
break;
case Key_Period: //advance one step forward in time
case Key_Greater:
if ( data->clock()->isActive() ) data->clock()->stop();
data->clock()->manualTick( true );
update();
kapp->processEvents();
break;
//FIXME: Uncomment after feature thaw!
// case Key_C: //Center clicked object object
// if ( clickedObject() ) slotCenter();
// break;
case Key_D: //Details window for Clicked/Centered object
if ( shiftPressed ) setClickedObject( focusObject() );
if ( clickedObject() ) slotDetail();
break;
case Key_P: //Show Popup menu for Clicked/Centered object
if ( shiftPressed ) setClickedObject( focusObject() );
if ( clickedObject() )
clickedObject()->showPopupMenu( pmenu, TQCursor::pos() );
break;
case Key_O: //Add object to Observing List
if ( shiftPressed ) setClickedObject( focusObject() );
if ( clickedObject() )
ksw->observingList()->slotAddObject();
break;
case Key_L: //Toggle User label on Clicked/Centered object
if ( shiftPressed ) setClickedObject( focusObject() );
if ( clickedObject() ) {
if ( isObjectLabeled( clickedObject() ) )
slotRemoveObjectLabel();
else
slotAddObjectLabel();
}
break;
case Key_T: //Toggle planet trail on Clicked/Centered object (if solsys)
if ( shiftPressed ) setClickedObject( focusObject() );
if ( clickedObject() && clickedObject()->isSolarSystem() ) {
if ( ((KSPlanetBase*)clickedObject())->hasTrail() )
slotRemovePlanetTrail();
else
slotAddPlanetTrail();
}
break;
//TIMING
/*
case Key_G: //loop through all cities
{
TQFile file;
if ( KSUtils::openDataFile( file, "Cities.dat" ) ) {
KSFileReader fileReader( file );
int nCount = 0;
while (fileReader.hasMoreLines()) {
TQString line = fileReader.readLine();
nCount++;
kdDebug() << "Line " << nCount << " : " << line;
}
}
TQTime t1;
t1.start();
for (int i=0;i<10;i++) {
if ( KSUtils::openDataFile( file, "Cities.dat" ) ) {
TQString sAll( file.readAll() );
TQStringList lines = TQStringList::split( "\n", sAll );
int nSize = lines.size();
for ( int i=0; i<nSize; i++ ) {
TQString& line = lines[i];
}
file.close();
}
}
kdDebug() << "time taken for reading city data via read all (10 times): (msec): " << t1.elapsed() << endl;
TQTime t2;
t2.start();
for (int i=0;i<10;i++) {
if ( KSUtils::openDataFile( file, "Cities.dat" ) ) {
TQTextStream stream( &file );
while ( !stream.eof() ) {
TQString line = stream.readLine();
}
file.close();
}
}
kdDebug() << "time taken for reading city data old code (10 times): (msec): " << t2.elapsed() << endl;
TQTime t3;
t3.start();
for (int i=0;i<1;i++) {
if ( KSUtils::openDataFile( file, "ngcic.dat" ) ) {
TQString sAll( file.readAll() );
TQStringList lines = TQStringList::split( "\n", sAll );
int nSize = lines.size();
for ( int i=0; i<nSize; i++ ) {
TQString& line = lines[i];
}
file.close();
}
}
kdDebug() << "time taken for reading deep sky data via read all (1 times): (msec): " << t3.elapsed() << endl;
TQTime t4;
t4.start();
for (int i=0;i<1;i++) {
if ( KSUtils::openDataFile( file, "ngcic.dat" ) ) {
TQTextStream stream( &file );
while ( !stream.eof() ) {
TQString line = stream.readLine();
}
file.close();
}
}
kdDebug() << "time taken for reading deep sky data old code (1 times): (msec): " << t4.elapsed() << endl;
break;
}
*/
//END_TIMING
}
setOldFocus( focus() );
oldfocus()->setAz( focus()->az()->Degrees() );
oldfocus()->setAlt( focus()->alt()->Degrees() );
double dHA = data->LST->Hours() - focus()->ra()->Hours();
while ( dHA < 0.0 ) dHA += 24.0;
data->HourAngle->setH( dHA );
if ( arrowKeyPressed ) {
infoBoxes()->focusObjChanged( i18n( "nothing" ) );
stopTracking();
if ( scrollCount > 10 ) {
setDestination( focus() );
scrollCount = 0;
}
}
forceUpdate(); //need a total update, or slewing with the arrow keys doesn't work.
}
void SkyMap::stopTracking() {
if ( ksw && Options::isTracking() ) ksw->slotTrack();
}
void SkyMap::keyReleaseEvent( TQKeyEvent *e ) {
switch ( e->key() ) {
case Key_Left : //no break; continue to Key_Down
case Key_Right : //no break; continue to Key_Down
case Key_Up : //no break; continue to Key_Down
case Key_Down :
slewing = false;
scrollCount = 0;
if ( Options::useAltAz() )
setDestinationAltAz( focus()->alt()->Degrees(), focus()->az()->Degrees() );
else
setDestination( focus() );
showFocusCoords( true );
forceUpdate(); // Need a full update to draw faint objects that are not drawn while slewing.
break;
}
}
void SkyMap::mouseMoveEvent( TQMouseEvent *e ) {
if ( Options::useHoverLabel() ) {
//First of all, if the transientObject() pointer is not NULL, then
//we just moved off of a hovered object. Begin fading the label.
if ( transientObject() && ! TransientTimer.isActive() ) {
fadeTransientLabel();
}
//Start a single-shot timer to monitor whether we are currently hovering.
//The idea is that whenever a moveEvent occurs, the timer is reset. It
//will only timeout if there are no move events for HOVER_INTERVAL ms
HoverTimer.start( HOVER_INTERVAL, true );
}
//Are we dragging an infoBox?
if ( infoBoxes()->dragBox( e ) ) {
update();
return;
}
//Are we defining a ZoomRect?
if ( ZoomRect.center().x() > 0 && ZoomRect.center().y() > 0 ) {
//cancel operation if the user let go of CTRL
if ( !( e->state() & ControlButton ) ) {
ZoomRect = TQRect(); //tqinvalidate ZoomRect
update();
} else {
//Resize the rectangle so that it passes through the cursor position
TQPoint pcenter = ZoomRect.center();
int dx = abs(e->x() - pcenter.x());
int dy = abs(e->y() - pcenter.y());
if ( dx == 0 || float(dy)/float(dx) > float(height())/float(width()) ) {
//Size rect by height
ZoomRect.setHeight( 2*dy );
ZoomRect.setWidth( 2*dy*width()/height() );
} else {
//Size rect by height
ZoomRect.setWidth( 2*dx );
ZoomRect.setHeight( 2*dx*height()/width() );
}
ZoomRect.moveCenter( pcenter ); //reset center
update();
return;
}
}
double dx = ( 0.5*width() - e->x() )/Options::zoomFactor();
double dy = ( 0.5*height() - e->y() )/Options::zoomFactor();
double dyPix = 0.5*height() - e->y();
if (unusablePoint (dx, dy)) return; // break if point is unusable
//determine RA, Dec of mouse pointer
setMousePoint( dXdYToRaDec( dx, dy, Options::useAltAz(), data->LST, data->geo()->lat(), Options::useRefraction() ) );
mousePoint()->EquatorialToHorizontal( data->LST, data->geo()->lat() );
if ( midMouseButtonDown ) { //zoom according to y-offset
float yoff = dyPix - y0;
if (yoff > 10 ) {
y0 = dyPix;
if ( ksw ) ksw->slotZoomIn();
}
if (yoff < -10 ) {
y0 = dyPix;
if ( ksw ) ksw->slotZoomOut();
}
}
if ( mouseButtonDown ) {
// set the mouseMoveCursor and set slewing=true, if they are not set yet
if (!mouseMoveCursor) setMouseMoveCursor();
if (!slewing) {
slewing = true;
infoBoxes()->focusObjChanged( i18n( "nothing" ) );
stopTracking(); //toggle tracking off
}
//Update focus such that the sky coords at mouse cursor remain approximately constant
if ( Options::useAltAz() ) {
mousePoint()->EquatorialToHorizontal( data->LST, data->geo()->lat() );
clickedPoint()->EquatorialToHorizontal( data->LST, data->geo()->lat() );
dms dAz = mousePoint()->az()->Degrees() - clickedPoint()->az()->Degrees();
dms dAlt = mousePoint()->alt()->Degrees() - clickedPoint()->alt()->Degrees();
focus()->setAz( focus()->az()->Degrees() - dAz.Degrees() ); //move focus in opposite direction
focus()->setAlt( focus()->alt()->Degrees() - dAlt.Degrees() );
if ( focus()->alt()->Degrees() >90.0 ) focus()->setAlt( 90.0 );
if ( focus()->alt()->Degrees() <-90.0 ) focus()->setAlt( -90.0 );
focus()->setAz( focus()->az()->reduce() );
focus()->HorizontalToEquatorial( data->LST, data->geo()->lat() );
} else {
dms dRA = mousePoint()->ra()->Degrees() - clickedPoint()->ra()->Degrees();
dms dDec = mousePoint()->dec()->Degrees() - clickedPoint()->dec()->Degrees();
focus()->setRA( focus()->ra()->Hours() - dRA.Hours() ); //move focus in opposite direction
focus()->setDec( focus()->dec()->Degrees() - dDec.Degrees() );
if ( focus()->dec()->Degrees() >90.0 ) focus()->setDec( 90.0 );
if ( focus()->dec()->Degrees() <-90.0 ) focus()->setDec( -90.0 );
focus()->setRA( focus()->ra()->reduce() );
focus()->EquatorialToHorizontal( data->LST, data->geo()->lat() );
}
++scrollCount;
if ( scrollCount > 4 ) {
showFocusCoords( true );
scrollCount = 0;
}
setOldFocus( focus() );
double dHA = data->LST->Hours() - focus()->ra()->Hours();
while ( dHA < 0.0 ) dHA += 24.0;
data->HourAngle->setH( dHA );
//redetermine RA, Dec of mouse pointer, using new focus
setMousePoint( dXdYToRaDec( dx, dy, Options::useAltAz(), data->LST, data->geo()->lat(), Options::useRefraction() ) );
setClickedPoint( mousePoint() );
forceUpdate(); // must be new computed
} else {
if ( ksw ) {
TQString sX, sY, s;
sX = mousePoint()->az()->toDMSString(true); //true = force +/- symbol
sY = mousePoint()->alt()->toDMSString(true); //true=force +/- symbol
if ( Options::useAltAz() && Options::useRefraction() )
sY = refract( mousePoint()->alt(), true ).toDMSString(true);
s = sX + ", " + sY;
ksw->statusBar()->changeItem( s, 1 );
sX = mousePoint()->ra()->toHMSString();
sY = mousePoint()->dec()->toDMSString(true); //true = force +/- symbol
s = sX + ", " + sY;
ksw->statusBar()->changeItem( s, 2 );
}
}
}
void SkyMap::wheelEvent( TQWheelEvent *e ) {
if ( ksw && e->delta() > 0 ) ksw->slotZoomIn();
else if ( ksw ) ksw->slotZoomOut();
}
void SkyMap::mouseReleaseEvent( TQMouseEvent * ) {
if ( infoBoxes()->unGrabBox() ) {
update();
return;
}
if ( ZoomRect.isValid() ) {
//Zoom in on center of Zoom Circle, by a factor equal to the ratio
//of the sky pixmap's width to the Zoom Circle's diameter
float factor = float(width()) / float(ZoomRect.width());
double dx = ( 0.5*width() - ZoomRect.center().x() )/Options::zoomFactor();
double dy = ( 0.5*height() - ZoomRect.center().y() )/Options::zoomFactor();
infoBoxes()->focusObjChanged( i18n( "nothing" ) );
stopTracking();
SkyPoint newcenter = dXdYToRaDec( dx, dy, Options::useAltAz(), data->LST, data->geo()->lat(), Options::useRefraction() );
setFocus( &newcenter );
setDestination( &newcenter );
ksw->zoom( Options::zoomFactor() * factor );
setDefaultMouseCursor();
ZoomRect = TQRect(); //tqinvalidate ZoomRect
forceUpdate();
} else {
setDefaultMouseCursor();
ZoomRect = TQRect(); //just in case user Ctrl+clicked + released w/o dragging...
}
if (mouseMoveCursor) setDefaultMouseCursor(); // set default cursor
if (mouseButtonDown) { //false if double-clicked, because it's unset there.
mouseButtonDown = false;
if ( slewing ) {
slewing = false;
if ( Options::useAltAz() )
setDestinationAltAz( focus()->alt()->Degrees(), focus()->az()->Degrees() );
else
setDestination( focus() );
}
setOldFocus( focus() );
forceUpdate(); // is needed because after moving the sky not all stars are shown
}
if ( midMouseButtonDown ) midMouseButtonDown = false; // if middle button was pressed unset here
scrollCount = 0;
}
void SkyMap::mousePressEvent( TQMouseEvent *e ) {
//did we Grab an infoBox?
if ( e->button() == LeftButton && infoBoxes()->grabBox( e ) ) {
update(); //refresh without redrawing skymap
return;
}
if ( (e->state() & ControlButton) && (e->button() == LeftButton) ) {
ZoomRect.moveCenter( e->pos() );
setZoomMouseCursor();
update(); //refresh without redrawing skymap
return;
}
// if button is down and cursor is not moved set the move cursor after 500 ms
TQTimer t;
t.singleShot (500, this, TQT_SLOT (setMouseMoveCursor()));
double dx = ( 0.5*width() - e->x() )/Options::zoomFactor();
double dy = ( 0.5*height() - e->y() )/Options::zoomFactor();
if (unusablePoint (dx, dy)) return; // break if point is unusable
if ( !midMouseButtonDown && e->button() == MidButton ) {
y0 = 0.5*height() - e->y(); //record y pixel coordinate for middle-button zooming
midMouseButtonDown = true;
}
if ( !mouseButtonDown ) {
if ( e->button()==LeftButton ) {
mouseButtonDown = true;
scrollCount = 0;
}
//determine RA, Dec of mouse pointer
setMousePoint( dXdYToRaDec( dx, dy, Options::useAltAz(),
data->LST, data->geo()->lat(), Options::useRefraction() ) );
setClickedPoint( mousePoint() );
//Find object nearest to clickedPoint()
setClickedObject( objectNearest( clickedPoint() ) );
if ( clickedObject() ) {
setClickedPoint( clickedObject() );
if ( e->button() == RightButton ) {
clickedObject()->showPopupMenu( pmenu, TQCursor::pos() );
}
if ( ksw && e->button() == LeftButton ) {
ksw->statusBar()->changeItem( clickedObject()->translatedLongName(), 0 );
}
} else {
//Empty sky selected. If left-click, display "nothing" in the status bar.
//If right-click, open "empty" popup menu.
setClickedObject( NULL );
switch (e->button()) {
case LeftButton:
if ( ksw ) ksw->statusBar()->changeItem( i18n( "Empty sky" ), 0 );
break;
case RightButton:
{
SkyObject *nullObj = new SkyObject( SkyObject::TYPE_UNKNOWN, clickedPoint()->ra()->Hours(), clickedPoint()->dec()->Degrees() );
pmenu->createEmptyMenu( nullObj );
delete nullObj;
pmenu->popup( TQCursor::pos() );
break;
}
default:
break;
}
}
}
}
void SkyMap::mouseDoubleClickEvent( TQMouseEvent *e ) {
//Was the event inside an infoBox? If so, shade the box.
if ( e->button() == LeftButton ) {
if ( infoBoxes()->shadeBox( e ) ) {
update();
return;
}
double dx = ( 0.5*width() - e->x() )/Options::zoomFactor();
double dy = ( 0.5*height() - e->y() )/Options::zoomFactor();
if (unusablePoint (dx, dy)) return; // break if point is unusable
if (mouseButtonDown ) mouseButtonDown = false;
if ( dx != 0.0 || dy != 0.0 ) slotCenter();
}
}
void SkyMap::paintEvent( TQPaintEvent * )
{
//If computeSkymap is false, then we just refresh the window using the stored sky pixmap
//and draw the "overlays" on top. This lets us update the overlay information rapidly
//without needing to recompute the entire skymap.
//use update() to trigger this "short" paint event; to force a full "recompute"
//of the skymap, use forceUpdate().
if (!computeSkymap)
{
*sky2 = *sky;
drawOverlays( sky2 );
bitBlt( this, 0, 0, sky2 );
return ; // exit because the pixmap is tqrepainted and that's all what we want
}
TQPainter psky;
setMapGeometry();
//checkSlewing combines the slewing flag (which is true when the display is actually in motion),
//the hideOnSlew option (which is true if slewing should hide objects),
//and clockSlewing (which is true if the timescale exceeds Options::slewTimeScale)
bool checkSlewing = ( ( slewing || ( clockSlewing && data->clock()->isActive() ) )
&& Options::hideOnSlew() );
//shortcuts to inform wheter to draw different objects
bool drawPlanets( Options::showPlanets() && !(checkSlewing && Options::hidePlanets() ) );
bool drawMW( Options::showMilkyWay() && !(checkSlewing && Options::hideMilkyWay() ) );
bool drawCNames( Options::showCNames() && !(checkSlewing && Options::hideCNames() ) );
bool drawCLines( Options::showCLines() &&!(checkSlewing && Options::hideCLines() ) );
bool drawCBounds( Options::showCBounds() &&!(checkSlewing && Options::hideCBounds() ) );
bool drawGrid( Options::showGrid() && !(checkSlewing && Options::hideGrid() ) );
psky.begin( sky );
psky.fillRect( 0, 0, width(), height(), TQBrush( data->colorScheme()->colorNamed( "SkyColor" ) ) );
if ( drawMW ) drawMilkyWay( psky );
if ( drawGrid ) drawCoordinateGrid( psky );
if ( drawCBounds ) drawConstellationBoundaries( psky );
if ( drawCLines ) drawConstellationLines( psky );
if ( drawCNames ) drawConstellationNames( psky );
if ( Options::showEquator() ) drawEquator( psky );
if ( Options::showEcliptic() ) drawEcliptic( psky );
//drawing to screen, so leave scale parameter at its default value of 1.0
drawStars( psky );
drawDeepSkyObjects( psky );
drawSolarSystem( psky, drawPlanets );
drawAttachedLabels( psky );
drawHorizon( psky );
//Finish up
psky.end();
*sky2 = *sky;
drawOverlays( sky2 );
bitBlt( this, 0, 0, sky2 );
computeSkymap = false; // use forceUpdate() to compute new skymap else old pixmap will be shown
}