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131 lines
4.3 KiB
131 lines
4.3 KiB
/***************************************************************************
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mapcanvas.cpp - Trinity Desktop Planetarium
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-------------------
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begin : Tue Apr 10 2001
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copyright : (C) 2001 by Jason Harris
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email : jharris@30doradus.org
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include <stdlib.h>
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#include <kstandarddirs.h>
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#include <tqpainter.h>
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#include <tqpixmap.h>
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#include "mapcanvas.h"
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#include "locationdialog.h"
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#include "kstars.h"
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#include "kstarsdata.h"
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MapCanvas::MapCanvas(TQWidget *parent, const char *name ) : TQWidget(parent,name) {
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BGColor = "#33A";
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setBackgroundColor( TQColor( BGColor ) );
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setBackgroundMode( TQWidget::NoBackground );
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Canvas = new TQPixmap();
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bgImage = new TQPixmap();
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LocationDialog *ld = (LocationDialog *)topLevelWidget();
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KStars *ks = (KStars *)ld->parent();
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TQString bgFile = ks->data()->stdDirs->findResource( "data", "kstars/geomap.png" );
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bgImage->load( bgFile, "PNG" );
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}
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MapCanvas::~MapCanvas(){
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delete bgImage;
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delete Canvas;
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}
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void MapCanvas::setGeometry( int x, int y, int w, int h ) {
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TQWidget::setGeometry( x, y, w, h );
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Canvas->resize( w, h );
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origin.setX( w/2 );
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origin.setY( h/2 );
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}
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void MapCanvas::setGeometry( const TQRect &r ) {
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TQWidget::setGeometry( r );
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Canvas->resize( r.width(), r.height() );
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origin.setX( r.width()/2 );
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origin.setY( r.height()/2 );
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}
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void MapCanvas::mousePressEvent( TQMouseEvent *e ) {
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LocationDialog *ld = (LocationDialog *)topLevelWidget();
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//Determine Lat/Long corresponding to event press
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int lng = ( e->x() - origin.x() );
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int lat = ( origin.y() - e->y() );
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ld->findCitiesNear( lng, lat );
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}
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void MapCanvas::paintEvent( TQPaintEvent * ) {
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TQPainter pcanvas;
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LocationDialog *ld = (LocationDialog *)topLevelWidget();
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KStars *ks = (KStars *)ld->parent();
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//prepare the canvas
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pcanvas.begin( Canvas );
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// pcanvas.fillRect( 0, 0, width(), height(), TQBrush( TQColor( BGColor ) ) );
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pcanvas.drawPixmap( 0, 0, *bgImage );
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// pcanvas.setBrush( white );
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pcanvas.setPen( TQPen( TQColor( "SlateGrey" ) ) );
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//Draw cities
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TQPoint o;
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for ( GeoLocation *g=ks->data()->geoList.first(); g; g = ks->data()->geoList.next() ) {
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o.setX( int( g->lng()->Degrees() + origin.x() ) );
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o.setY( height() - int( g->lat()->Degrees() + origin.y() ) );
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if ( o.x() >= 0 && o.x() <= width() && o.y() >=0 && o.y() <=height() ) {
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pcanvas.drawPoint( o.x(), o.y() );
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}
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}
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//redraw the cities that appear in the filtered list, with a white pen
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//If the list has not been filtered, skip the redraw.
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if ( ld->filteredList()->count() ) {
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pcanvas.setPen( white );
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for ( GeoLocation *g=ld->filteredList()->first(); g; g = ld->filteredList()->next() ) {
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o.setX( int( g->lng()->Degrees() + origin.x() ) );
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o.setY( height() - int( g->lat()->Degrees() + origin.y() ) );
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if ( o.x() >= 0 && o.x() <= width() && o.y() >=0 && o.y() <=height() ) {
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pcanvas.drawPoint( o.x(), o.y() );
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}
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}
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}
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GeoLocation *g = ld->selectedCity();
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if ( g ) {
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o.setX( int( g->lng()->Degrees() + origin.x() ) );
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o.setY( height() - int( g->lat()->Degrees() + origin.y() ) );
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pcanvas.setPen( red );
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pcanvas.setBrush( red );
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pcanvas.drawEllipse( o.x()-3, o.y()-3, 6, 6 );
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pcanvas.moveTo( o.x()-16, o.y() );
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pcanvas.lineTo( o.x()-8, o.y() );
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pcanvas.moveTo( o.x()+8, o.y() );
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pcanvas.lineTo( o.x()+16, o.y() );
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pcanvas.moveTo( o.x(), o.y()-16 );
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pcanvas.lineTo( o.x(), o.y()-8 );
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pcanvas.moveTo( o.x(), o.y()+8 );
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pcanvas.lineTo( o.x(), o.y()+16 );
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pcanvas.setPen( white );
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pcanvas.setBrush( white );
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}
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pcanvas.end();
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bitBlt( this, 0, 0, Canvas );
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}
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#include "mapcanvas.moc"
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