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tdetoys/kmoon/kmoonwidget.cpp

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/*
* kmoon - a moon phase indicator
* $Id$
* Copyright (C) 1998,2000 Stephan Kulow
*
* 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; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <stdlib.h>
#include <assert.h>
#include <unistd.h>
#include <tqbitmap.h>
#include <tqtooltip.h>
#include <tqpainter.h>
#include <tqpopupmenu.h>
#include <tqcolor.h>
#include <dcopclient.h>
#include <kdebug.h>
#include <kapplication.h>
#include <kwin.h>
#include <kstartupinfo.h>
#include <kmessagebox.h>
#include <kaboutdata.h>
#include <klocale.h>
#include <kstandarddirs.h>
#include <kcmdlineargs.h>
#include <kiconloader.h>
#include <kiconeffect.h>
#include <kconfig.h>
#include "kmoondlg.h"
#include "kmoonwidget.h"
#include <math.h>
extern double moonphasebylunation(int lun, int phi);
extern time_t JDtoDate(double jd, struct tm *event_date);
MoonWidget::MoonWidget(TQWidget *parent, const char *name)
: TQWidget(parent, name)
{
struct tm * t;
time_t clock;
counter = -1;
KConfig *config = KGlobal::config();
config->setGroup("General");
_angle = config->readNumEntry("Rotation", 0);
_north = config->readBoolEntry("Northern", true);
_mask = config->readBoolEntry("Mask", true);
old_angle = old_w = old_h = old_counter = -1;
old_north = false;
old_mask = false;
startTimer(1000 * 60 * 20);
time(&clock);
t = gmtime(&clock);
// kdDebug() << "time " << t->tm_isdst << " " << timezone << " " << daylight << endl ;
calctqStatus(mktime(t));
}
MoonWidget::~MoonWidget()
{
}
void MoonWidget::calctqStatus( time_t time )
{
uint lun = 0;
time_t last_new = 0;
time_t next_new = 0;
do {
double JDE = moonphasebylunation(lun, 0);
last_new = next_new;
next_new = JDtoDate(JDE, 0);
lun++;
} while (next_new < time);
lun -= 2;
TQDateTime ln;
ln.setTime_t( last_new );
kdDebug() << KGlobal::locale()->formatDateTime( ln ) << endl;
time_t first_quarter = JDtoDate( moonphasebylunation( lun, 1 ), 0 );
TQDateTime fq;
fq.setTime_t( first_quarter );
kdDebug() << KGlobal::locale()->formatDateTime( fq ) << endl;
time_t full_moon = JDtoDate( moonphasebylunation( lun, 2 ), 0 );
TQDateTime fm;
fm.setTime_t( full_moon );
kdDebug() << KGlobal::locale()->formatDateTime( fm ) << endl;
time_t third_quarter = JDtoDate( moonphasebylunation( lun, 3 ), 0 );
TQDateTime tq;
tq.setTime_t( third_quarter );
kdDebug() << KGlobal::locale()->formatDateTime( tq ) << endl;
TQDateTime nn;
nn.setTime_t( next_new );
kdDebug() << KGlobal::locale()->formatDateTime( nn ) << endl;
TQDateTime now;
now.setTime_t( time );
kdDebug() << KGlobal::locale()->formatDateTime( now ) << endl;
counter = ln.daysTo( now );
kdDebug() << "counter " << counter << " " << fm.daysTo( now ) << endl;
if ( fm.daysTo( now ) == 0 ) {
counter = 14;
tooltip = i18n( "Full Moon" );
return;
} else if ( counter <= 15 && counter >= 13 ) {
counter = 14 + fm.daysTo( now );
kdDebug() << "around full moon " << counter << endl;
}
int diff = fq.daysTo( now );
if ( diff == 0 )
counter = 7;
else if ( counter <= 8 && counter >= 6 ) {
counter = 7 + diff;
kdDebug() << "around first quarter " << counter << endl;
}
diff = ln.daysTo( now );
if ( diff == 0 )
counter = 0;
else if ( counter <= 1 || counter >= 28 )
{
counter = ( 29 + diff ) % 29;
diff = -nn.daysTo( now );
if ( diff == 0 )
counter = 0;
else if ( diff < 3 )
counter = 29 - diff;
kdDebug() << "around new " << counter << " " << diff << endl;
}
if ( tq.daysTo( now ) == 0 )
counter = 21;
else if ( counter <= 22 && counter >= 20 )
{
counter = 21 + tq.daysTo( now );
kdDebug() << "around third quarter " << counter << endl;
}
kdDebug() << "counter " << counter << endl;
assert (counter >= 0 && counter < 29);
switch (counter) {
case 0:
tooltip = i18n("New Moon");
return;
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
tooltip = i18n("Waxing Crescent (New Moon was yesterday)", "Waxing Crescent (%n days since New Moon)", counter );
break;
case 7:
tooltip = i18n("First Quarter");
break;
case 8:
case 9:
case 10:
case 11:
case 12:
case 13:
tooltip = i18n( "Waxing Gibbous (Tomorrow is Full Moon)", "Waxing Gibbous (%n days to Full Moon)", -fm.daysTo( now ) );
break;
case 14:
assert( false );
break;
case 15:
case 16:
case 17:
case 18:
case 19:
case 20:
tooltip = i18n("Waning Gibbous (Yesterday was Full Moon)", "Waning Gibbous (%n days since Full Moon)", fm.daysTo( now ) );
break;
case 21:
tooltip = i18n("Last Quarter");
break;
case 22:
case 23:
case 24:
case 25:
case 26:
case 27:
case 28:
kdDebug() << "nn.days " << ln.daysTo( now ) << " " << nn.daysTo( now ) << endl;
tooltip = i18n("Waning Crescent (Tomorrow is New Moon)", "Waning Crescent (%n days to New Moon)", -nn.daysTo( now ) );
break;
default:
kdFatal() << "coolo can't count\n";
}
renderGraphic();
tqrepaint();
}
TQImage MoonWidget::loadMoon(int index)
{
if (index == 0) // the new moon has the wrong filename
index = 29;
TQString filename = TQString("kmoon/pics/moon%1.png").tqarg(index);
TQString path = locate("data", filename);
if (path.isNull())
kdFatal() << "cound't find " << filename << ". Exiting.\n";
TQImage image(path);
KIconEffect iconeffect;
image=iconeffect.apply(image, KIcon::Panel, KIcon::DefaultState);
return image;
}
void MoonWidget::setAngle(int value)
{
_angle = value;
renderGraphic();
tqrepaint();
}
void MoonWidget::setNorthHemi(bool n)
{
_north = n;
renderGraphic();
tqrepaint();
}
void MoonWidget::setMask(bool value)
{
_mask = value;
renderGraphic();
tqrepaint();
}
void MoonWidget::paintEvent(TQPaintEvent *)
{
bitBlt(this, 0, 0, &pixmap, 0, 0);
}
void MoonWidget::resizeEvent(TQResizeEvent *)
{
renderGraphic();
tqrepaint();
}
void MoonWidget::renderGraphic()
{
if (old_counter == counter && old_w == width() && old_h == height() &&
old_angle == _angle && old_north == _north)
return;
old_counter = counter;
old_w = width();
old_h = height();
old_north = _north;
TQImage im = loadMoon(counter);
assert(!im.isNull());
im = im.convertDepth(32, 0);
assert(!im.isNull());
int mw = TQMIN(width(), height());
TQImage dest;
if (TQPixmap::defaultDepth() > 8) {
if (fabs(_angle)!=0) { // nothing to rotate
//We expand the image 2x before rotating, rotate it, and then average out
//the pixel for better quality
int dmw = 2 * mw;
if (!pixmap.convertFromImage(im.smoothScale(dmw, dmw), 0)) {
return;
}
TQWMatrix m;
m.rotate(_angle);
TQPixmap rotated = pixmap.xForm(m);
//Copy the relevant part back to the pixmap
TQRegion r(TQRect(0, 0, dmw, dmw), TQRegion::Ellipse);
TQPainter p;
p.begin(&pixmap);
p.fillRect(0, 0, dmw, dmw, TQt::black);
p.setClipRegion(r);
p.drawPixmap(0, 0, rotated, (rotated.width() - dmw) / 2,
(rotated.height() - dmw) / 2,
dmw, dmw);
p.end();
//Shrink down to the proper size, averaging from the source
im = pixmap.convertToImage();
dest = im.copy(0, 0, mw, mw);
for (int y = 0; y < mw; y++) {
TQRgb *destline = (TQRgb*)dest.scanLine(y);
TQRgb *sourceline1 = (TQRgb*)im.scanLine(2*y);
TQRgb *sourceline2 = (TQRgb*)im.scanLine(2*y + 1);
for (int x = 0; x < mw; x++) {
int r = tqRed(sourceline1[2*x]) + tqRed(sourceline1[2*x+1]);
r = r + tqRed(sourceline2[2*x]) + tqRed(sourceline2[2*x+1]);
int g = tqGreen(sourceline1[2*x]) + tqGreen(sourceline1[2*x+1]);
g = g + tqGreen(sourceline2[2*x]) + tqGreen(sourceline2[2*x+1]);
int b = tqBlue(sourceline1[2*x]) + tqBlue(sourceline1[2*x+1]);
b = b + tqBlue(sourceline2[2*x]) + tqBlue(sourceline2[2*x+1]);
destline[x] = tqRgb(tqRound(r / 4), tqRound(g / 4),
tqRound(b / 4));
}
}
} else {
dest = im.smoothScale(mw, mw).convertDepth(32);
}
if (_mask) {
// generate alpha-channel
int dmw = mw*2;
TQBitmap dMask(dmw, dmw);
TQRegion r(TQRect(0, 0, dmw, dmw), TQRegion::Ellipse);
TQPainter p;
p.begin(&dMask);
p.fillRect(0, 0, dmw, dmw, TQt::white);
p.setClipRegion(r);
p.fillRect(0, 0, dmw, dmw, TQt::black);
p.end();
TQImage Mask2 = TQImage(dMask.convertToImage()).convertDepth(32).smoothScale(mw, mw);
dest.setAlphaBuffer(true);
for (int y = 0; y < mw; y++) {
TQRgb *destline = (TQRgb*)dest.scanLine(y);
TQRgb *sourceline = (TQRgb*)Mask2.scanLine(y);
for (int x = 0; x < mw; x++) {
destline[x] = (destline[x] & TQRGB_MASK)|(tqRed(sourceline[x]) << 24);
}
}
}
} else {
dest = im.smoothScale(mw, mw);
}
if (!_north)
dest = dest.mirror(true, true);
if (!pixmap.convertFromImage(dest, 0)) {
return;
}
TQToolTip::remove(this);
TQToolTip::add(this, tooltip);
}
#include "kmoonwidget.moc"