C++ KStars类代码示例

void modCalcDayLength::initGeo(void)
{
	KStars *ks = (KStars*) parent()->parent()->parent(); // QSplitter->AstroCalc->KStars
	geoPlace = ks->geo();
	longBox->show( geoPlace->lng() );
	latBox->show( geoPlace->lat() );
}

void KSPopupMenu::createEmptyMenu( SkyPoint *nullObj ) {
    KStars* ks = KStars::Instance();
    SkyObject o( SkyObject::TYPE_UNKNOWN, nullObj->ra(), nullObj->dec() );
    o.setAlt( nullObj->alt() );
    o.setAz( nullObj->az() );
    initPopupMenu( &o, i18n( "Empty sky" ), QString(), QString(), false, false );
    addAction( i18nc( "Sloan Digital Sky Survey", "Show SDSS Image" ), ks->map(), SLOT( slotSDSS() ) );
    addAction( i18nc( "Digitized Sky Survey", "Show DSS Image" ),      ks->map(), SLOT( slotDSS()  ) );
}

void WIView::onDetailsButtonClicked()
{
    ///Code taken from WUTDialog::slotDetails()
    KStars *kstars = KStars::Instance();
    SkyObject* so = m_CurSoItem->getSkyObject();
    DetailDialog *detail = new DetailDialog(so, kstars->data()->lt(), kstars->data()->geo(), kstars);
    detail->exec();
    delete detail;
}

MapCanvas::MapCanvas(QWidget *parent, const char *name ) : QWidget(parent,name) {
	BGColor = "#33A";
	setBackgroundColor( QColor( BGColor ) );
	setBackgroundMode( QWidget::NoBackground );
	Canvas = new QPixmap();
	bgImage = new QPixmap();
	LocationDialog *ld = (LocationDialog *)topLevelWidget();
	KStars *ks = (KStars *)ld->parent();
	QString bgFile = ks->data()->stdDirs->findResource( "data", "kstars/geomap.png" );
	bgImage->load( bgFile, "PNG" );
}

void WIView::onSlewButtonClicked()
{
    ///Slew map to selected sky-object
    SkyObject* so = m_CurSoItem->getSkyObject();
    KStars* kstars = KStars::Instance();
    if (so != 0)
    {
        kstars->map()->setFocusPoint(so);
        kstars->map()->setFocusObject(so);
        kstars->map()->setDestination(*kstars->map()->focusPoint());
    }
}

void ConjunctionsTool::slotGoto() {
    int index = m_SortModel->mapToSource( OutputList->currentIndex() ).row(); // Get the number of the line
    long double jd = outputJDList.value( index );
    KStarsDateTime dt;
    KStars *ks = KStars::Instance();
    KStarsData *data = KStarsData::Instance();
    SkyMap *map = ks->map();

    // Show conjunction
    data->setLocation( *geoPlace );
    dt.setDJD( jd );
    data->changeDateTime( dt );
    map->setClickedObject( data->skyComposite()->findByName( m_Model->data( m_Model->index( index, 2 ) ).toString() ) );
    map->setClickedPoint( map->clickedObject() );
    map->slotCenter();
}

void FindDialog::filter() {  //Filter the list of names with the string in the SearchBox
	KStars *p = (KStars *)parent();

	SearchList->clear();
	ObjectNameList &ObjNames = p->data()->ObjNames;
	// check if latin names are used
	ObjNames.setLanguage( Options::useLatinConstellNames() );

	QString searchFor = SearchBox->text().lower();
		for ( SkyObjectName *name = ObjNames.first( searchFor ); name; name = ObjNames.next() ) {
			if ( name->text().lower().startsWith( searchFor ) ) {
				new SkyObjectNameListItem ( SearchList, name );
/*				if ( i++ >= 5000 ) {              //Every 5000 name insertions,
					kapp->processEvents ( 50 );		//spend 50 msec processing KApplication events
					i = 0;
				}*/
			}
		}
	setListItemEnabled(); // Automatically highlight first item
	SearchBox->setFocus();  // set cursor to QLineEdit
}

void KSPopupMenu::createStarMenu( StarObject *star ) {
    KStars* ks = KStars::Instance();
    //Add name, rise/set time, center/track, and detail-window items
    QString name;
    if( star->name() != "star" ) {
        name = star->translatedLongName();
    } else {
        if( star->getHDIndex() ) {
            name = QString( "HD%1" ).arg( QString::number( star->getHDIndex() ) );
        } else {
            // FIXME: this should be some catalog name too
            name = "Star";
        }
    }
    initPopupMenu( star, name, i18n( "star" ), i18n("%1<sup>m</sup>, %2", star->mag(), star->sptype()) );
    //If the star is named, add custom items to popup menu based on object's ImageList and InfoList
    if ( star->name() != "star" ) {
        addLinksToMenu( star );
    } else {
        addAction( i18nc( "Sloan Digital Sky Survey", "Show SDSS Image" ), ks->map(), SLOT( slotSDSS() ) );
        addAction( i18nc( "Digitized Sky Survey", "Show DSS Image" ), ks->map(), SLOT( slotDSS() ) );
    }
}

void KSPopupMenu::createSatelliteMenu( Satellite *satellite ) {
    KStars* ks = KStars::Instance();
    QString velocity, altitude, range;
    velocity.setNum( satellite->velocity() );
    altitude.setNum( satellite->altitude() );
    range.setNum( satellite->range() );

    clear();

    addFancyLabel( satellite->name() );
    addFancyLabel( satellite->id() );
    addFancyLabel( i18n( "satellite" ) );
    addFancyLabel( KStarsData::Instance()->skyComposite()->getConstellationBoundary()->constellationName( satellite ) );

    addSeparator();

    addFancyLabel( i18n( "Velocity: %1 km/s", velocity ), -2 );
    addFancyLabel( i18n( "Altitude: %1 km", altitude ), -2 );
    addFancyLabel( i18n( "Range: %1 km", range ), -2 );

    addSeparator();

    //Insert item for centering on object
    addAction( i18n( "Center && Track" ), ks->map(), SLOT( slotCenter() ) );
    //Insert item for measuring distances
    //FIXME: add key shortcut to menu items properly!
    addAction( i18n( "Angular Distance To...            [" ), ks->map(),
               SLOT(slotBeginAngularDistance()) );
    addAction( i18n( "Starhop from here to...            " ), ks->map(),
               SLOT(slotBeginStarHop()) );

    //Insert "Add/Remove Label" item
    if ( ks->map()->isObjectLabeled( satellite ) )
        addAction( i18n( "Remove Label" ), ks->map(), SLOT( slotRemoveObjectLabel() ) );
    else
        addAction( i18n( "Attach Label" ), ks->map(), SLOT( slotAddObjectLabel() ) );
}

void WIView::onSettingsIconClicked()
{
    KStars *kstars = KStars::Instance();
    kstars->showWISettingsUI();
}

void MapCanvas::paintEvent( QPaintEvent * ) {
	QPainter pcanvas;
	LocationDialog *ld = (LocationDialog *)topLevelWidget();
  KStars *ks = (KStars *)ld->parent();

	//prepare the canvas
	pcanvas.begin( Canvas );
//	pcanvas.fillRect( 0, 0, width(), height(), QBrush( QColor( BGColor ) ) );
	pcanvas.drawPixmap( 0, 0, *bgImage );
//	pcanvas.setBrush( white );
	pcanvas.setPen( QPen( QColor( "SlateGrey" ) ) );

	//Draw cities
	QPoint o;

	for ( GeoLocation *g=ks->data()->geoList.first(); g; g = ks->data()->geoList.next() ) {
		o.setX( int( g->lng()->Degrees() + origin.x() ) );
		o.setY( height() - int( g->lat()->Degrees() + origin.y() ) );

		if ( o.x() >= 0 && o.x() <= width() && o.y() >=0 && o.y() <=height() ) {
			pcanvas.drawPoint( o.x(), o.y() );
		}
	}

  //redraw the cities that appear in the filtered list, with a white pen
	//If the list has not been filtered, skip the redraw.
	if ( ld->filteredList()->count() ) {
		pcanvas.setPen( white );
		for ( GeoLocation *g=ld->filteredList()->first(); g; g = ld->filteredList()->next() ) {
			o.setX( int( g->lng()->Degrees() + origin.x() ) );
			o.setY( height() - int( g->lat()->Degrees() + origin.y() ) );

			if ( o.x() >= 0 && o.x() <= width() && o.y() >=0 && o.y() <=height() ) {
				pcanvas.drawPoint( o.x(), o.y() );
			}
		}
	}

	GeoLocation *g = ld->selectedCity();
	if ( g ) {
		o.setX( int( g->lng()->Degrees() + origin.x() ) );
		o.setY( height() - int( g->lat()->Degrees() + origin.y() ) );

		pcanvas.setPen( red );
		pcanvas.setBrush( red );
		pcanvas.drawEllipse( o.x()-3, o.y()-3, 6, 6 );
		pcanvas.moveTo( o.x()-16, o.y() );
		pcanvas.lineTo( o.x()-8, o.y() );
		pcanvas.moveTo( o.x()+8, o.y() );
		pcanvas.lineTo( o.x()+16, o.y() );
		pcanvas.moveTo( o.x(), o.y()-16 );
		pcanvas.lineTo( o.x(), o.y()-8 );
		pcanvas.moveTo( o.x(), o.y()+8 );
		pcanvas.lineTo( o.x(), o.y()+16 );
		pcanvas.setPen( white );
		pcanvas.setBrush( white );
  }

	pcanvas.end();
	bitBlt( this, 0, 0, Canvas );
}

void PlanetViewer::slotToday() {
    KStars *ks = (KStars*)parent();
    pw->dateBox->setDate( ks->data()->lt().date() );
}

void SkyMap::keyPressEvent( QKeyEvent *e ) {
    KStars* kstars = KStars::Instance();
    QString s;
    bool arrowKeyPressed( false );
    bool shiftPressed( false );
    float step = 1.0;
    if ( e->modifiers() & Qt::ShiftModifier ) { step = 10.0; shiftPressed = true; }

    //If the DBus resume key is not empty, then DBus processing is
    //paused while we wait for a keypress
    if ( ! data->resumeKey.isEmpty() && QKeySequence(e->key()) == data->resumeKey ) {
        //The resumeKey was pressed.  Signal that it was pressed by
        //resetting it to empty; this will break the loop in
        //KStars::waitForKey()
        data->resumeKey = QKeySequence();
        return;
    }

    if(m_previewLegend) {
        slotCancelLegendPreviewMode();
    }

    switch ( e->key() ) {
    case Qt::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;
        break;

    case Qt::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;
        break;

    case Qt::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;
        break;

    case Qt::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;
        break;

    case Qt::Key_Plus:   //Zoom in
    case Qt::Key_Equal:
        zoomInOrMagStep( e->modifiers() );
        break;

    case Qt::Key_Minus:  //Zoom out
    case Qt::Key_Underscore:
        zoomOutOrMagStep( e->modifiers() );
        break;

    case Qt::Key_0: //center on Sun
        setClickedObject( data->skyComposite()->planet( KSPlanetBase::SUN ) );
        setClickedPoint( clickedObject() );
        slotCenter();
        break;

    case Qt::Key_1: //center on Mercury
        setClickedObject( data->skyComposite()->planet( KSPlanetBase::MERCURY ) );
        setClickedPoint( clickedObject() );
        slotCenter();
        break;
//.........这里部分代码省略.........

void SkyMap::mousePressEvent( QMouseEvent *e ) {
    KStars* kstars = KStars::Instance();

    if ( ( e->modifiers() & Qt::ControlModifier ) && (e->button() == Qt::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
    QTimer::singleShot(500, this, SLOT (setMouseMoveCursor()));

    // break if point is unusable
    if ( projector()->unusablePoint( e->pos() ) )
        return;

    if ( !midMouseButtonDown && e->button() == Qt::MidButton ) {
        y0 = 0.5*height() - e->y();  //record y pixel coordinate for middle-button zooming
        midMouseButtonDown = true;
    }

    if ( !mouseButtonDown ) {
        if ( e->button() == Qt::LeftButton ) {
            mouseButtonDown = true;
        }

        //determine RA, Dec of mouse pointer
        m_MousePoint = projector()->fromScreen( e->pos(), data->lst(), data->geo()->lat() );
        setClickedPoint( &m_MousePoint );

        //Find object nearest to clickedPoint()
        double maxrad = 1000.0/Options::zoomFactor();
        SkyObject* obj = data->skyComposite()->objectNearest( clickedPoint(), maxrad );
        setClickedObject( obj );
        if( obj )
            setClickedPoint( obj );

        switch( e->button() ) {
        case Qt::LeftButton:
            if( kstars ) {
                QString name;
                if( clickedObject() )
                    name = clickedObject()->translatedLongName();
                else
                    name = i18n( "Empty sky" );
                kstars->statusBar()->changeItem(name, 0 );
            }
            break;
        case Qt::RightButton:
            if( rulerMode ) {
                // Compute angular distance.
                slotEndRulerMode();
            } else {
                // Show popup menu
                if( clickedObject() ) {
                    clickedObject()->showPopupMenu( pmenu, QCursor::pos() );
                } else {
                    pmenu->createEmptyMenu( clickedPoint() );
                    pmenu->popup( QCursor::pos() );
                }
            }
            break;
        default: ;
        }
    }
}

void SkyMap::stopTracking() {
    KStars* kstars = KStars::Instance();
    emit positionChanged( focus() );
    if( kstars && Options::isTracking() )
        kstars->slotTrack();
}