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/*
**
** Copyright (C) 1998-2001 by Matthias Hölzer-Klüpfel <hoelzer@kde.org>
** Maintainence has ceased - send questions to kde-devel@kde.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 program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program in a file called COPYING; if not, write to
** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
** MA 02110-1301, USA.
*/
/*
** Bug reports and questions can be sent to kde-devel@kde.org
*/
#include <time.h>
#include <qvaluelist.h>
#include <qdir.h>
#include <qimage.h>
#include <qpainter.h>
#include <qtl.h>
#include <qstringlist.h>
#include <kglobal.h>
#include <kstandarddirs.h>
#include <kdesktopfile.h>
#include <kimageeffect.h>
#include "astro.h"
#include "maploader.h"
QPtrList<MapTheme> MapLoader::themes()
{
QPtrList<MapTheme> result;
QStringList files = KGlobal::dirs()->findAllResources("data", "kworldclock/maps/*/*.desktop");
for (QStringList::Iterator it=files.begin(); it != files.end(); ++it)
{
KDesktopFile conf(*it);
conf.setGroup("Theme");
result.append(new MapTheme(conf.readName(), conf.readEntry("Theme")));
}
return result;
}
QStringList MapLoader::maps(const QString &theme)
{
return KGlobal::dirs()->findAllResources("data", QString("kworldclock/maps/%1/*.jpg").arg(theme));
}
void MapLoader::load(unsigned int width, const QString &theme, unsigned int height, float opacity)
{
// find the maps available
QValueList<uint> sizes;
QStringList files = maps(theme);
for (uint i=0; i<files.count(); ++i)
{
QString f = files[i];
int pos = f.findRev("/");
if (pos >= 0)
f = f.mid(pos+1);
pos = f.findRev(".");
if (pos >= 0)
f = f.left(pos);
sizes.append(f.toInt());
}
qHeapSort(sizes);
// find the closest (bigger) size
uint size=0;
for (uint i=0; i<sizes.count(); ++i)
{
size = sizes[i];
if (size >= width)
break;
}
QImage image;
if (size == 0)
{
image = QImage(locate("data", "kworldclock/maps/depths/800.jpg"));
size = 800;
}
else
image = QImage(locate("data", QString("kworldclock/maps/%1/%2.jpg").arg(theme).arg(size)));
if (height == 0)
height = width/2;
if ((image.width() != (int)width) || (image.height() != (int)height))
image = image.smoothScale(width, height);
// convert to light map
_light.convertFromImage(image);
// calculate dark map
_dark.convertFromImage(KImageEffect::blend(Qt::black, image, opacity));
}
QBitmap MapLoader::darkMask(int width, int height)
{
time_t t;
struct tm *tmp;
double jt, sunra, sundec, sunrv, sunlong;
short *wtab;
QBitmap illuMask(width, height);
// calculate the position of the sun
t = time(NULL);
tmp = gmtime(&t);
jt = jtime(tmp);
sunpos(jt,FALSE, &sunra, &sundec, &sunrv, &sunlong);
int sec = tmp->tm_hour*60*60 + tmp->tm_min*60 + tmp->tm_sec;
int gmt_position = width * sec / 86400; // note: greenwich is in the middle!
// calculate the illuminated area
wtab = new short[height];
projillum(wtab,width,height,sundec);
// draw illumination
illuMask.fill(Qt::black);
QPainter p;
p.begin(&illuMask);
int start, stop;
int middle = width - gmt_position;
for (int y=0; y<height; y++)
if (wtab[y]>0)
{
start = middle - wtab[y];
stop = middle + wtab[y];
if (start < 0)
{
p.drawLine(0,y,stop,y);
p.drawLine(width+start,y,width,y);
}
else
if (stop > width)
{
p.drawLine(start,y,width,y);
p.drawLine(0,y,stop-width,y);
}
else
p.drawLine(start,y,stop,y);
}
p.end();
delete [] wtab;
return illuMask;
}
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