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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 "SvgRenderer.h"
#include "Svg.h"
#include "XmlOptions.h"
#include <QPainter>
#include <QDomDocument>
#if WITH_ZLIB
#include <zlib.h>
#endif
namespace Svg
{
//________________________________________________
bool SvgRenderer::updateConfiguration()
{
bool drawOverlay( XmlOptions::get().get<bool>( "SVG_DRAW_OVERLAY" ) );
if( drawOverlay == drawOverlay_ ) return false;
drawOverlay_ = drawOverlay;
return true;
}
//________________________________________________
bool SvgRenderer::load( const QString& filename )
{
// load filename directly
bool loaded( BaseSvgRenderer::load( filename ) );
if( loaded )
{
isValid_ = _hasPrefix();
if( !_hasMargins() )
{
hasShadowMargins_ = _hasMargins( "shadow" );
hasShadowPrefix_ = _hasPrefix( "shadow", Ring );
hasShadow_ = hasShadowMargins_ && hasShadowPrefix_;
}
hasOverlay_ = elementExists( Svg::Overlay );
// centering hints
overlayHints_ = OverlayNone;
if( elementExists( "hint-overlay-pos-right" ) ) overlayHints_ |= OverlayPosRight;
if( elementExists( "hint-overlay-pos-bottom" ) ) overlayHints_ |= OverlayPosBottom;
if( elementExists( "hint-overlay-stretch") ) overlayHints_ |= OverlayStretch;
else if( elementExists( "hint-overlay-tile-horizontal" ) ) overlayHints_ |= OverlayTileHorizontal;
else if( elementExists( "hint-overlay-tile-vertical") ) overlayHints_ |= OverlayTileVertical;
hints_ = HintNone;
if( elementExists( "hint-compose-over-border" ) ) hints_ = HintComposeOverBorder;
if( _hasPrefix( "mask-overlay" ) ) maskPrefix_ = "mask-overlay";
else if( _hasPrefix( "mask" ) ) maskPrefix_ = "mask";
else maskPrefix_ = QString();
} else {
isValid_ = false;
}
return loaded;
}
//________________________________________________
void SvgRenderer::render( QPaintDevice& device, const QString& id )
{
// check device size
if( device.height() <= 0 || device.width() <= 0 ) return;
// create painter
if( !id.isEmpty() )
{
double width = device.width();
double height = device.height();
QPainter painter( &device );
BaseSvgRenderer::render( &painter, id, QRectF( QPointF( 0, 0 ), QSizeF( width, height ) ) );
} else {
if( hasShadow_ )
{
// create painter
QPainter painter( &device );
// shadow image
QSize size( device.width(), device.height() );
QImage shadowImage( size, QImage::Format_ARGB32_Premultiplied );
shadowImage.fill( Qt::transparent );
_render( shadowImage, "shadow", Ring );
painter.drawImage( QPoint(0,0), shadowImage );
// main image
const Base::Margins outerPadding( this->outerPadding() );
size.rwidth() -= outerPadding.width();
size.rheight() -= outerPadding.height();
QImage mainImage( size, QImage::Format_ARGB32_Premultiplied );
mainImage.fill( Qt::transparent );
_renderPanel( mainImage );
painter.drawImage( outerPadding.topLeft(), mainImage );
} else _renderPanel( device );
}
return;
}
//________________________________________________
bool SvgRenderer::_hasPrefix( QString prefix, SvgElements mask ) const
{
if( !prefix.isEmpty() ) prefix+="-";
// check base class
if( !BaseSvgRenderer::isValid() ) return false;
// make sure needed elements are present
if( (mask & TopLeft) && !elementExists( prefix+Svg::TopLeft ) ) return false;
if( (mask & Top) && !elementExists( prefix+Svg::Top ) ) return false;
if( (mask & TopRight) && !elementExists( prefix+Svg::TopRight ) ) return false;
if( (mask & BottomLeft) && !elementExists( prefix+Svg::BottomLeft ) ) return false;
if( (mask & Bottom) && !elementExists( prefix+Svg::Bottom ) ) return false;
if( (mask & BottomRight) && !elementExists( prefix+Svg::BottomRight ) ) return false;
if( (mask & Left) && !elementExists( prefix+Svg::Left ) ) return false;
if( (mask & Center) && !elementExists( prefix+Svg::Center ) ) return false;
if( (mask & Right) && !elementExists( prefix+Svg::Right ) ) return false;
return true;
}
//________________________________________________
bool SvgRenderer::_hasMargins( QString prefix, SvgElements mask ) const
{
if( !prefix.isEmpty() ) prefix+="-";
// check base class
if( !BaseSvgRenderer::isValid() ) return false;
// make sure needed elements are present
if( (mask & Top) && !elementExists( prefix + Svg::MarginTop ) ) return false;
if( (mask & Left) && !elementExists( prefix + Svg::MarginLeft ) ) return false;
if( (mask & Right) && !elementExists( prefix + Svg::MarginRight ) ) return false;
if( (mask & Bottom) && !elementExists( prefix + Svg::MarginBottom ) ) return false;
return true;
}
//________________________________________________
Base::Margins SvgRenderer::margins() const
{
Base::Margins out;
if( elementExists( Svg::MarginLeft ) ) out.setLeft( boundsOnElement( Svg::MarginLeft ).width() );
if( elementExists( Svg::MarginRight ) ) out.setRight( boundsOnElement( Svg::MarginRight ).width() );
if( elementExists( Svg::MarginTop ) ) out.setTop( boundsOnElement( Svg::MarginTop ).height() );
if( elementExists( Svg::MarginBottom ) ) out.setBottom( boundsOnElement( Svg::MarginBottom ).height() );
// add shadow size if available
if( hasShadow_ ) out += outerPadding();
return out;
}
//________________________________________________
Base::Margins SvgRenderer::outerPadding() const
{
Base::Margins out;
if( hasShadowMargins_ )
{
out.setLeft( boundsOnElement( "shadow-"+Svg::MarginLeft ).width() );
out.setRight( boundsOnElement( "shadow-"+Svg::MarginRight ).width() );
out.setTop( boundsOnElement( "shadow-"+Svg::MarginTop ).height() );
out.setBottom( boundsOnElement( "shadow-"+Svg::MarginBottom ).height() );
} else {
if( elementExists( Svg::ShadowLeft ) ) out.setLeft( boundsOnElement( Svg::ShadowLeft ).size().width() );
if( elementExists( Svg::ShadowRight ) ) out.setRight( boundsOnElement( Svg::ShadowRight ).size().width() );
if( elementExists( Svg::ShadowTop ) ) out.setTop( boundsOnElement( Svg::ShadowTop ).size().height() );
if( elementExists( Svg::ShadowBottom ) ) out.setBottom( boundsOnElement( Svg::ShadowBottom ).size().height() );
}
return out;
}
//________________________________________________
void SvgRenderer::_renderPanel( QPaintDevice& device )
{
// create painter
QPainter painter( &device );
// size
QSize size( device.width(), device.height() );
//Overlays
if( drawOverlay_ && hasOverlay_ )
{
// compute painting rect
QSizeF overlaySize = boundsOnElement(Svg::Overlay).size();
// size hints
if( overlayHints_ & OverlayStretch ) overlaySize = size;
else if( overlayHints_ & OverlayTileHorizontal ) overlaySize.setWidth( size.width() );
else if( overlayHints_ & OverlayTileVertical ) overlaySize.setHeight( size.height() );
QRectF overlayRect( QPointF(0,0), overlaySize );
// create image and paint
QImage overlayImage( QSize( device.width(), device.height() ), QImage::Format_ARGB32_Premultiplied );
overlayImage.fill( Qt::transparent );
QPainter overlayPainter( &overlayImage );
// centering hints
if( overlayHints_ & OverlayPosRight ) overlayPainter.translate( device.width() - overlayRect.width(), 0 );
if( overlayHints_ & OverlayPosBottom ) overlayPainter.translate( 0, device.height() - overlayRect.height() );
BaseSvgRenderer::render( &overlayPainter, Svg::Overlay, overlayRect );
overlayPainter.end();
// draw on main painter
painter.drawImage( QPointF(0,0), overlayImage );
}
// center
if( hints_ & HintComposeOverBorder )
{
QImage centerImage( size, QImage::Format_ARGB32_Premultiplied );
centerImage.fill( Qt::transparent );
_render( centerImage, "", Center, false );
painter.drawImage( QPoint(0,0), centerImage );
}
// set mask
if( !maskPrefix_.isEmpty() && ((hints_ & HintComposeOverBorder) || (drawOverlay_ && hasOverlay_ )) )
{
// create mask
QImage maskImage( size, QImage::Format_ARGB32_Premultiplied );
maskImage.fill( Qt::transparent );
_render( maskImage, maskPrefix_ );
painter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
painter.drawImage( QPointF(0,0), maskImage );
painter.setCompositionMode(QPainter::CompositionMode_SourceOver);
}
// main image
QImage mainImage( size, QImage::Format_ARGB32_Premultiplied );
mainImage.fill( Qt::transparent );
//
if( hints_ & HintComposeOverBorder ) _render( mainImage, "", Ring );
else _render( mainImage );
painter.drawImage( QPoint(0,0), mainImage );
}
//________________________________________________
void SvgRenderer::_render( QImage& target, QString prefix, SvgElements elements, bool padding )
{
// check target
if( target.isNull() ) return;
const QRect targetRect( target.rect() );
if( !targetRect.isValid() ) return;
// check prefix
if( !prefix.isEmpty() ) prefix += "-";
// paint svg onto image
QPainter painter( &target );
QRectF centerRect( targetRect );
if( padding )
{
centerRect.adjust(
boundsOnElement( prefix+Svg::Left ).width(),
boundsOnElement( prefix+Svg::Top ).height(),
-boundsOnElement( prefix+Svg::Right ).width(),
-boundsOnElement( prefix+Svg::Bottom ).height() );
}
// center
if( centerRect.isValid() && elements & Center )
{ BaseSvgRenderer::render( &painter, prefix+Svg::Center, centerRect ); }
if( padding )
{
if( elements & TopLeft )
{
// topLeft corner
painter.setClipRect( QRect( targetRect.topLeft(), targetRect.center() ) );
BaseSvgRenderer::render( &painter, prefix+Svg::TopLeft, QRectF( QPointF( 0, 0 ), boundsOnElement( prefix+Svg::TopLeft ).size() ) );
}
if( elements & TopRight )
{
// topRight corner
painter.setClipRect( QRect( QPoint( targetRect.center().x()+1, targetRect.top() ), QPoint( targetRect.right(), targetRect.center().y() ) ) );
BaseSvgRenderer::render( &painter, prefix+Svg::TopRight, QRectF( QPointF( centerRect.right(), 0 ), boundsOnElement( prefix+Svg::TopRight ).size() ) );
}
if( elements & BottomLeft )
{
// topRight corner
painter.setClipRect( QRect( QPoint( targetRect.left(), targetRect.center().y()+1 ), QPoint( targetRect.center().x(), targetRect.bottom() ) ) );
BaseSvgRenderer::render( &painter, prefix+Svg::BottomLeft, QRectF( QPointF( 0, centerRect.bottom() ), boundsOnElement( prefix+Svg::BottomRight ).size() ) );
}
if( elements & BottomRight )
{
// bottomRight corner
painter.setClipRect( QRect( targetRect.center()+QPoint( 1, 1 ), targetRect.bottomRight() ) );
BaseSvgRenderer::render( &painter, prefix+Svg::BottomRight, QRectF( centerRect.bottomRight(), boundsOnElement( prefix+Svg::BottomRight ).size() ) );
}
if( centerRect.width() > 0 )
{
if( elements & Top )
{
// top size
painter.setClipRect( QRect( targetRect.topLeft(), QPoint( targetRect.right(), targetRect.center().y() ) ) );
BaseSvgRenderer::render( &painter, prefix+Svg::Top, QRectF( QPointF( centerRect.left(), 0 ), QSizeF( centerRect.width(), boundsOnElement( prefix+Svg::Top ).height() ) ) );
}
if( elements & Bottom )
{
// bottom size
painter.setClipRect( QRect( QPoint( targetRect.left(), targetRect.center().y()+1 ), targetRect.bottomRight() ) );
BaseSvgRenderer::render( &painter, prefix+Svg::Bottom, QRectF( centerRect.bottomLeft(), QSizeF( centerRect.width(), boundsOnElement( prefix+Svg::Bottom ).height() ) ) );
}
}
if( centerRect.height() > 0 )
{
if( elements & Left )
{
// left side
painter.setClipRect( QRect( targetRect.topLeft(), QPoint( targetRect.center().x(), targetRect.bottom() ) ) );
BaseSvgRenderer::render( &painter, prefix+Svg::Left, QRectF( QPointF( 0, centerRect.top() ), QSizeF( boundsOnElement( prefix+Svg::Left ).width(), centerRect.height() ) ) );
}
if( elements & Right )
{
painter.setClipRect( QRect( QPoint( targetRect.center().x()+1, targetRect.top() ), targetRect.bottomRight() ) );
BaseSvgRenderer::render( &painter, prefix+Svg::Right, QRectF( centerRect.topRight(), QSizeF( boundsOnElement( prefix+Svg::Right ).width(), centerRect.height() ) ) );
}
}
}
painter.end();
return;
}
}
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