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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 "CustomPixmap.h"
#include "Debug.h"
#include "IconSize.h"
#include "File.h"
#include "PixmapEngine.h"
#include "QtUtil.h"
#include <QApplication>
#include <QImage>
#include <QIcon>
#include <QPainter>
#include <QFileIconProvider>
//_________________________________________________
CustomPixmap::CustomPixmap( const QSize& size, Flags flags ):
#if QT_VERSION >= 0x050300
QPixmap( flags&HighDpi ? size*qApp->devicePixelRatio() : size ),
#else
QPixmap( size ),
#endif
Counter( "CustomPixmap" )
{
#if QT_VERSION >= 0x050300
if( flags&HighDpi ) setDevicePixelRatio( qApp->devicePixelRatio() );
#endif
if( flags&Transparent ) fill( Qt::transparent );
}
//_________________________________________________
CustomPixmap::CustomPixmap( const QString& file ):
QPixmap( file ),
Counter( "CustomPixmap" )
{
Debug::Throw( "CustomPixmap::CustomPixmap.\n" );
/*
under windows, if pixmap is null, and file is an executable of a link
try load the icon using FileIncoProvider
*/
#if defined(Q_OS_WIN)
if( !isNull() ) return;
QFileInfo info( file );
if( info.isExecutable() || info.isSymLink() )
{
QIcon icon( QFileIconProvider().icon( file ) );
if( icon.isNull() ) return;
const QSize iconSize( IconSize( IconSize::Maximum ) );
QPixmap out( icon.pixmap( iconSize ) );
*this = out;
}
#endif
}
//_________________________________________________
CustomPixmap CustomPixmap::find( const QString& file )
{
Debug::Throw( "CustomPixmap::find.\n" );
*this = CustomPixmap( PixmapEngine::get( file ) );
return *this;
}
//_________________________________________________
CustomPixmap CustomPixmap::rotate( const CustomPixmap::Rotation& rotation )
{
if( rotation == None ) return *this;
const qreal dpiRatio( devicePixelRatio() );
CustomPixmap out( QSize( height(), width() ), Transparent );
out.setDevicePixelRatio( dpiRatio );
QPainter painter( &out );
// rotate the painter
if( rotation == CounterClockwise )
{
painter.translate( 0, out.height()/dpiRatio );
painter.rotate( -90 );
} else {
painter.translate( out.width()/dpiRatio, 0 );
painter.rotate( 90 );
}
painter.drawPixmap( QPoint(0,0), *this );
painter.end();
return out;
}
//_________________________________________________
CustomPixmap CustomPixmap::transparent( qreal intensity ) const
{
if( isNull() ) return *this;
QPixmap out( *this );
QPainter painter( &out );
QColor color( Qt::black );
color.setAlphaF( intensity );
painter.setCompositionMode( QPainter::CompositionMode_DestinationIn );
painter.setPen( Qt::NoPen );
painter.setBrush( color );
painter.drawRect( out.rect() );
painter.end();
return out;
}
//_________________________________________________
CustomPixmap CustomPixmap::desaturate( void ) const
{
if( isNull() ) return *this;
QImage image( toImage() );
if( image.format() != QImage::Format_ARGB32_Premultiplied )
{
Debug::Throw(0) << "CustomPixmap::desaturate - wrong format." << endl;
return *this;
}
for( int row = 0; row < image.height(); ++row )
{
// alter pixmaps
QRgb* pixels = reinterpret_cast<QRgb*>( image.scanLine( row ) );
for( int column = 0; column < image.width(); ++column )
{
const int gray( qGray( pixels[column] ) );
pixels[column] = qRgba( gray, gray, gray, qAlpha(pixels[column]) );
}
}
return CustomPixmap( image );
}
//_________________________________________________
CustomPixmap CustomPixmap::merge( const CustomPixmap& pixmap, Corner corner ) const
{
if( isNull() ) return *this;
QSize size( this->size()/devicePixelRatio() );
QSize pixmapSize( pixmap.size()/pixmap.devicePixelRatio() );
QImage source( toImage() );
QPainter painter( &source );
switch( corner )
{
case TOP_RIGHT:
painter.drawPixmap( QPoint( size.width()-pixmapSize.width(), 0 ), pixmap );
break;
case BOTTOM_LEFT:
painter.drawPixmap( QPoint( 0, size.height()-pixmapSize.height() ), pixmap );
break;
case BOTTOM_RIGHT:
painter.drawPixmap( QPoint( size.width()-pixmapSize.width(), size.height()-pixmapSize.height() ), pixmap );
break;
case CENTER:
painter.drawPixmap( QPoint( (size.width()-pixmapSize.width())/2, (size.height()-pixmapSize.height())/2 ), pixmap );
break;
default:
case TOP_LEFT:
painter.drawPixmap( QPoint( 0, 0 ), pixmap );
break;
}
painter.end();
return CustomPixmap().fromImage( source );
}
//_________________________________________________
CustomPixmap CustomPixmap::highlighted( qreal opacity ) const
{
Debug::Throw( "CustomPixmap::highlighted.\n" );
if( opacity <= 0 ) return *this;
opacity = qMin<qreal>( opacity, 1.0 );
// compute mask
QPixmap mask( *this );
{
QPainter painter( &mask );
painter.setRenderHints(QPainter::SmoothPixmapTransform);
painter.setPen( Qt::NoPen );
QColor color( Qt::white );
color.setAlphaF( opacity );
painter.setBrush( color );
painter.setCompositionMode( QPainter::CompositionMode_SourceIn );
painter.drawRect( mask.rect() );
painter.end();
}
if( opacity == 1.0 ) return mask;
// apply highlight
QPixmap out( *this );
{
QPainter painter( &out );
painter.drawPixmap( QPoint(0,0), mask );
painter.end();
}
return out;
}
//______________________________________________________________________________________
qreal CustomPixmap::devicePixelRatio( void ) const
{
#if QT_VERSION >= 0x050300
return QPixmap::devicePixelRatio();
#else
return 1;
#endif
}
//______________________________________________________________________________________
void CustomPixmap::setDevicePixelRatio( qreal value )
{
#if QT_VERSION >= 0x050300
return QPixmap::setDevicePixelRatio( value );
#else
Q_UNUSED( value );
#endif
}
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