143 lines
3.5 KiB
C++
143 lines
3.5 KiB
C++
/* === This file is part of Calamares - <https://calamares.io> ===
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*
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* SPDX-FileCopyrightText: 2012 Christian Muehlhaeuser <muesli@tomahawk-player.org>
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* SPDX-FileCopyrightText: 2019, Adriaan de Groot <groot@kde.org>
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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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*/
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#include "ImageRegistry.h"
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#include <QHash>
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#include <QIcon>
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#include <QPainter>
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#include <QSvgRenderer>
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static QHash< QString, QHash< int, QHash< qint64, QPixmap > > > s_cache;
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ImageRegistry*
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ImageRegistry::instance()
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{
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static ImageRegistry* s_instance = new ImageRegistry();
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return s_instance;
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}
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ImageRegistry::ImageRegistry() {}
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QIcon
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ImageRegistry::icon( const QString& image, CalamaresUtils::ImageMode mode )
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{
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return pixmap( image, CalamaresUtils::defaultIconSize(), mode );
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}
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qint64
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ImageRegistry::cacheKey( const QSize& size )
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{
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return size.width() * 100 + size.height() * 10;
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}
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QPixmap
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ImageRegistry::pixmap( const QString& image, const QSize& size, CalamaresUtils::ImageMode mode )
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{
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Q_ASSERT( !( size.width() < 0 || size.height() < 0 ) );
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if ( size.width() < 0 || size.height() < 0 )
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{
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return QPixmap();
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}
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QHash< qint64, QPixmap > subsubcache;
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QHash< int, QHash< qint64, QPixmap > > subcache;
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if ( s_cache.contains( image ) )
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{
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subcache = s_cache.value( image );
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if ( subcache.contains( mode ) )
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{
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subsubcache = subcache.value( mode );
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const qint64 ck = cacheKey( size );
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if ( subsubcache.contains( ck ) )
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{
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return subsubcache.value( ck );
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}
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}
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}
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// Image not found in cache. Let's load it.
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QPixmap pixmap;
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if ( image.toLower().endsWith( ".svg" ) )
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{
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QSvgRenderer svgRenderer( image );
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QPixmap p( size.isNull() || size.height() == 0 || size.width() == 0 ? svgRenderer.defaultSize() : size );
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p.fill( Qt::transparent );
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QPainter pixPainter( &p );
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svgRenderer.render( &pixPainter );
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pixPainter.end();
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pixmap = p;
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}
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else
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{
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pixmap = QPixmap( image );
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}
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if ( !pixmap.isNull() )
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{
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if ( mode == CalamaresUtils::RoundedCorners )
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{
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pixmap = CalamaresUtils::createRoundedImage( pixmap, size );
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}
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if ( !size.isNull() && pixmap.size() != size )
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{
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if ( size.width() == 0 )
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{
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pixmap = pixmap.scaledToHeight( size.height(), Qt::SmoothTransformation );
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}
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else if ( size.height() == 0 )
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{
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pixmap = pixmap.scaledToWidth( size.width(), Qt::SmoothTransformation );
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}
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else
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{
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pixmap = pixmap.scaled( size, Qt::IgnoreAspectRatio, Qt::SmoothTransformation );
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}
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}
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putInCache( image, size, mode, pixmap );
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}
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return pixmap;
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}
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void
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ImageRegistry::putInCache( const QString& image,
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const QSize& size,
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CalamaresUtils::ImageMode mode,
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const QPixmap& pixmap )
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{
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QHash< qint64, QPixmap > subsubcache;
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QHash< int, QHash< qint64, QPixmap > > subcache;
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if ( s_cache.contains( image ) )
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{
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subcache = s_cache.value( image );
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if ( subcache.contains( mode ) )
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{
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subsubcache = subcache.value( mode );
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}
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}
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subsubcache.insert( cacheKey( size ), pixmap );
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subcache.insert( mode, subsubcache );
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s_cache.insert( image, subcache );
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}
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