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123 lines
3.4 KiB
123 lines
3.4 KiB
15 years ago
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/* This file is part of the KDE project
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Copyright (C) 2005 Wilfried Huss <Wilfried.Huss@gmx.at>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <kimageeffect.h>
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#include <kdebug.h>
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#include <qimage.h>
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#include "kvsprefs.h"
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#include "renderedDocumentPagePixmap.h"
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RenderedDocumentPagePixmap::RenderedDocumentPagePixmap()
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: _accessiblePixmap(0), dirty(true)
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{
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}
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RenderedDocumentPagePixmap::~RenderedDocumentPagePixmap()
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{
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delete _accessiblePixmap;
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}
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QPainter* RenderedDocumentPagePixmap::getPainter()
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{
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if (paintingActive()) {
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kdError(1223) << "RenderedDocumentPagePixmap::getPainter() called when painting was active" << endl;
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return 0;
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} else
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return new QPainter(this);
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}
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void RenderedDocumentPagePixmap::resize(int width, int height)
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{
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QPixmap::resize(width, height);
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if(_accessiblePixmap)
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_accessiblePixmap->resize(width, height);
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dirty = true;
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}
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void RenderedDocumentPagePixmap::resize(const QSize& size)
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{
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resize(size.width(), size.height());
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}
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QPixmap RenderedDocumentPagePixmap::accessiblePixmap()
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{
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if (!_accessiblePixmap || dirty)
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{
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QImage backImage = this->convertToImage();
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switch (KVSPrefs::renderMode())
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{
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case KVSPrefs::EnumRenderMode::Inverted:
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// Invert image pixels using QImage internal function
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backImage.invertPixels(false);
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break;
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case KVSPrefs::EnumRenderMode::Recolor:
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// Recolor image using KImageEffect::flatten with dither:0
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KImageEffect::flatten(backImage, KVSPrefs::recolorForeground(), KVSPrefs::recolorBackground());
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break;
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case KVSPrefs::EnumRenderMode::BlackWhite:
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// Manual Gray and Contrast
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unsigned int* data = (unsigned int*)backImage.bits();
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int val;
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int pixels = backImage.width() * backImage.height();
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int con = KVSPrefs::bWContrast();
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int thr = 255 - KVSPrefs::bWThreshold();
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for( int i = 0; i < pixels; ++i )
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{
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val = qGray(data[i]);
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if (val > thr)
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val = 128 + (127 * (val - thr)) / (255 - thr);
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else if ( val < thr )
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val = (128 * val) / thr;
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if (con > 2)
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{
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val = con * (val - thr) / 2 + thr;
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if (val > 255)
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val = 255;
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else if (val < 0)
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val = 0;
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}
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data[i] = qRgba(val, val, val, 255);
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}
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break;
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}
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if (!_accessiblePixmap)
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_accessiblePixmap = new QPixmap(width(), height());
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_accessiblePixmap->convertFromImage(backImage);
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dirty = false;
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}
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return *_accessiblePixmap;
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}
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unsigned int RenderedDocumentPagePixmap::memory()
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{
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return size().height() * size().width() * depth() / 8;
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}
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#include "renderedDocumentPagePixmap.moc"
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