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/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This 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 software 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, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/
#include "SvgPlasmaInterface.h"
#include "SvgEngine.h"
#include "Svg.h"
#include "XmlOptions.h"
#include <QPainter>
namespace Svg
{
//__________________________________________________________
SvgEngine& SvgEngine::get()
{
static SvgEngine singleton;
return singleton;
}
//__________________________________________________________
SvgEngine::SvgEngine():
thread_( this )
{ connect( &thread_, SIGNAL(imageCacheAvailable(Svg::ImageCache)), SLOT(_processImageCache(Svg::ImageCache)) ); }
//__________________________________________________________
bool SvgEngine::needsReloadOnPaletteChange() const
{ return ( renderer_.styleSheetIsUsed() && !(plasmaInterface_ && plasmaInterface_->hasThemePalette()) ); }
//__________________________________________________________
bool SvgEngine::reload( bool forced )
{
Debug::Throw() << "Svg::SvgEngine::reload - forced: " << forced << endl;
bool configurationChanged( renderer_.updateConfiguration() );
bool changed( _loadSvg( forced ) );
if( !isValid() )
{
cache_.clear();
return true;
}
// reload cache
if( changed || configurationChanged )
{
SvgId::List svgIdList;
for( auto&& iter = cache_.begin(); iter != cache_.end(); ++iter )
{ svgIdList << iter.key(); }
cache_.clear();
preload( svgIdList );
// update margins and outer padding
margins_ = renderer_.margins();
outerPadding_ = renderer_.outerPadding();
emit SvgEngine::changed();
return true;
}
return false;
}
//__________________________________________________________
void SvgEngine::preload( const SvgId::List& ids )
{
if( ids.empty() ) return;
if( !isValid() ) return;
if( thread_.isRunning() ) return;
if( plasmaInterface_ && plasmaInterface_->hasThemePalette() )
{
auto palette( plasmaInterface_->themePalette() );
thread_.createStyleSheet( palette );
} else {
QPalette palette;
thread_.createStyleSheet( palette );
}
thread_.setSvgFile( svgFile_ );
thread_.setSvgIdList( ids );
thread_.start();
}
//_______________________________________________
void SvgEngine::_processImageCache( const ImageCache& cache )
{
for( auto&& iter = cache.begin(); iter != cache.end(); ++iter )
{ cache_.insert( iter.key(), QPixmap::fromImage( iter.value() ) ); }
}
//__________________________________________________________
QPixmap SvgEngine::_get( const SvgId& id, bool fromCache )
{
auto&& iter( cache_.find( id ) );
if( iter != cache_.end() ) return iter.value();
// add to map
QPixmap pixmap( id.size() );
pixmap.fill( Qt::transparent );
renderer_.render( pixmap, id.id() );
return cache_.insert( id, pixmap ).value();
}
//________________________________________________
bool SvgEngine::_loadSvg( bool forced )
{
Debug::Throw() << "Svg::SvgEngine::_loadSvg - forced: " << forced << endl;
bool changed( false );
// try get from plasma interface if needed
#if !defined(Q_OS_WIN)
if( XmlOptions::get().get<bool>( "SVG_USE_PLASMA_INTERFACE" ) )
{
bool first( !plasmaInterface_ );
if( first )
{
plasmaInterface_ = new SvgPlasmaInterface( this );
connect( plasmaInterface_, SIGNAL(themeChanged()), SLOT(reload()) );
}
if( plasmaInterface_->loadTheme() ) changed = true;
renderer_.createStyleSheet(
plasmaInterface_->hasThemePalette() ?
plasmaInterface_->themePalette():
QPalette() );
if( plasmaInterface_->setImagePath( (SvgPlasmaInterface::ImagePath) XmlOptions::get().get<int>( "SVG_PLASMA_IMAGE_PATH" ) ) ) changed = true;
if( changed || first || forced ) plasmaInterface_->loadFile();
if( plasmaInterface_->isValid() )
{
QString file( plasmaInterface_->fileName() );
renderer_.load( QString( file ) );
if( renderer_.isValid() )
{
if( svgFile_ != file ) changed = true;
svgFile_ = file;
return changed || forced;
}
}
}
#endif
// create style sheet
renderer_.createStyleSheet( QPalette() );
// find valid svg file
bool found( false );
for( const auto& option:XmlOptions::get().specialOptions( "SVG_BACKGROUND" ) )
{
QString file( option.raw() );
renderer_.load( file );
if( renderer_.isValid() )
{
changed = ( svgFile_ != file );
svgFile_ = file;
found = true;
break;
}
}
if( !found ) renderer_.load( QString() );
return changed || forced;
}
};
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