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/*
Scan Tailor - Interactive post-processing tool for scanned pages.
Copyright (C) Joseph Artsimovich <joseph.artsimovich@gmail.com>
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "ThumbnailFactory.h"
#include "CompositeCacheDrivenTask.h"
#include "filter_dc/ThumbnailCollector.h"
#include <QGraphicsItem>
#include <QSizeF>
class ThumbnailFactory::Collector : public ThumbnailCollector
{
public:
Collector(IntrusivePtr<ThumbnailPixmapCache> const& cache, QSizeF const& max_size);
virtual void processThumbnail(std::auto_ptr<QGraphicsItem> thumbnail);
virtual IntrusivePtr<ThumbnailPixmapCache> thumbnailCache();
virtual QSizeF maxLogicalThumbSize() const;
std::auto_ptr<QGraphicsItem> retrieveThumbnail() { return m_ptrThumbnail; }
private:
IntrusivePtr<ThumbnailPixmapCache> m_ptrCache;
QSizeF m_maxSize;
std::auto_ptr<QGraphicsItem> m_ptrThumbnail;
};
ThumbnailFactory::ThumbnailFactory(
IntrusivePtr<ThumbnailPixmapCache> const& pixmap_cache,
QSizeF const& max_size, IntrusivePtr<CompositeCacheDrivenTask> const& task)
: m_ptrPixmapCache(pixmap_cache),
m_maxSize(max_size),
m_ptrTask(task)
{
}
ThumbnailFactory::~ThumbnailFactory()
{
}
std::auto_ptr<QGraphicsItem>
ThumbnailFactory::get(PageInfo const& page_info)
{
Collector collector(m_ptrPixmapCache, m_maxSize);
m_ptrTask->process(page_info, &collector);
return collector.retrieveThumbnail();
}
/*======================= ThumbnailFactory::Collector ======================*/
ThumbnailFactory::Collector::Collector(
IntrusivePtr<ThumbnailPixmapCache> const& cache, QSizeF const& max_size)
: m_ptrCache(cache),
m_maxSize(max_size)
{
}
void
ThumbnailFactory::Collector::processThumbnail(
std::auto_ptr<QGraphicsItem> thumbnail)
{
m_ptrThumbnail = thumbnail;
}
IntrusivePtr<ThumbnailPixmapCache>
ThumbnailFactory::Collector::thumbnailCache()
{
return m_ptrCache;
}
QSizeF
ThumbnailFactory::Collector::maxLogicalThumbSize() const
{
return m_maxSize;
}
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