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