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/***************************************************************************
mapcanvas.cpp - K Desktop Planetarium
-------------------
begin : Tue Apr 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. *
* *
***************************************************************************/
#include <stdlib.h>
#include <kstandarddirs.h>
#include <qpainter.h>
#include <qpixmap.h>
#include "mapcanvas.h"
#include "locationdialog.h"
#include "kstars.h"
#include "kstarsdata.h"
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" );
}
MapCanvas::~MapCanvas(){
delete bgImage;
delete Canvas;
}
void MapCanvas::setGeometry( int x, int y, int w, int h ) {
QWidget::setGeometry( x, y, w, h );
Canvas->resize( w, h );
origin.setX( w/2 );
origin.setY( h/2 );
}
void MapCanvas::setGeometry( const QRect &r ) {
QWidget::setGeometry( r );
Canvas->resize( r.width(), r.height() );
origin.setX( r.width()/2 );
origin.setY( r.height()/2 );
}
void MapCanvas::mousePressEvent( QMouseEvent *e ) {
LocationDialog *ld = (LocationDialog *)topLevelWidget();
//Determine Lat/Long corresponding to event press
int lng = ( e->x() - origin.x() );
int lat = ( origin.y() - e->y() );
ld->findCitiesNear( lng, lat );
}
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 );
}
#include "mapcanvas.moc"
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