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71 lines
2.4 KiB
71 lines
2.4 KiB
/* ============================================================
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*
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* This file is a part of digiKam project
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* http://www.digikam.org
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*
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* Date : 2006-18-03
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* Description : Superimpose filter.
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*
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* Copyright (C) 2006-2008 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
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*
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* This program is free software; you can redistribute it
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* and/or modify it under the terms of the GNU General
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* Public License as published by the Free Software Foundation;
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* either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* ============================================================ */
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// Local includes.
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#include "superimpose.h"
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namespace DigikamSuperImposeImagesPlugin
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{
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SuperImpose::SuperImpose(Digikam::DImg *orgImage, Digikam::DImg *templ,
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TQRect orgImageSelection,
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Digikam::DColorComposer::CompositingOperation compositeRule)
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{
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m_orgImage = *orgImage;
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m_template = *templ;
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m_selection = orgImageSelection;
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m_compositeRule = compositeRule;
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filterImage();
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}
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void SuperImpose::filterImage(void)
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{
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if (m_template.isNull())
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return;
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int templateWidth = m_template.width();
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int templateHeight = m_template.height();
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// take selection of src image and scale it to size of template
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m_destImage = m_orgImage.smoothScaleSection(m_selection.x(), m_selection.y(),
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m_selection.width(), m_selection.height(), templateWidth, templateHeight);
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// convert depth if necessary
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m_template.convertToDepthOfImage(&m_destImage);
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// get composer for compositing rule
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Digikam::DColorComposer *composer = Digikam::DColorComposer::getComposer(m_compositeRule);
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Digikam::DColorComposer::MultiplicationFlags flags = Digikam::DColorComposer::NoMultiplication;
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if (m_compositeRule != Digikam::DColorComposer::PorterDuffNone)
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flags = Digikam::DColorComposer::MultiplicationFlagsDImg;
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// do alpha blending of template on dest image
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m_destImage.bitBlendImage(composer, &m_template, 0, 0, templateWidth, templateHeight, 0, 0, flags);
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delete composer;
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}
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} // namespace DigikamSuperImposeImagesPlugin
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