// vim: set tabstop=4 shiftwidth=4 noexpandtab
/*
Gwenview - A simple image viewer for KDE
Copyright 2000-2004 Aurélien Gâteau
 
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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
*/

#include "gvdocumentanimatedloadedimpl.moc"

// Qt
#include <qstring.h>

// KDE
#include <kdebug.h>
#include <klocale.h>

// Local

//#define ENABLE_LOG
#ifdef ENABLE_LOG
#define LOG(x) kdDebug() << k_funcinfo << x << endl
#else
#define LOG(x) ;
#endif

class GVDocumentAnimatedLoadedImplPrivate {
public:
	GVImageFrames mFrames;
	int mCurrentFrame;
	QTimer mFrameTimer;
};


GVDocumentAnimatedLoadedImpl::GVDocumentAnimatedLoadedImpl(GVDocument* document, const GVImageFrames& frames)
: GVDocumentLoadedImpl(document) {
	LOG("" << mDocument->url().prettyURL() << ", frames: " << frames.count() );
	d=new GVDocumentAnimatedLoadedImplPrivate;
	d->mFrames = frames;
	d->mCurrentFrame = -1;
	connect( &d->mFrameTimer, SIGNAL( timeout()), SLOT( nextFrame()));
}

void GVDocumentAnimatedLoadedImpl::init() {
	GVDocumentLoadedImpl::init();
	nextFrame();
}

void GVDocumentAnimatedLoadedImpl::nextFrame() {
	++d->mCurrentFrame;
	if( d->mCurrentFrame == int( d->mFrames.count())) d->mCurrentFrame = 0;
	d->mFrameTimer.start( QMAX( 10, d->mFrames[ d->mCurrentFrame ].delay ));
	LOG("" << d->mCurrentFrame );
	setImage( d->mFrames[ d->mCurrentFrame ].image );
        // TODO this signal is usually used only while loading
	emit rectUpdated( QRect(QPoint(0,0), d->mFrames[ d->mCurrentFrame ].image.size()) );
}

GVDocumentAnimatedLoadedImpl::~GVDocumentAnimatedLoadedImpl() {
	delete d;
}


void GVDocumentAnimatedLoadedImpl::transform(GVImageUtils::Orientation orientation) {
	for( GVImageFrames::Iterator it = d->mFrames.begin(); it != d->mFrames.end(); ++it ) {
	        (*it).image = GVImageUtils::transform( (*it).image, orientation );
	}
	setImage( d->mFrames[ d->mCurrentFrame ].image );
}


QString GVDocumentAnimatedLoadedImpl::localSave(QFile* /*file*/, const QCString& /*format*/) const {
	return i18n("Sorry, cannot save animated images.");
}
