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tdegraphics/ksvg/impl/SVGColorProfileElementImpl.cc

272 lines
6.6 KiB

/*
Copyright (C) 2001-2003 KSVG Team
This file is part of the KDE project
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 <kurl.h>
#include <kdebug.h>
#include <kio/netaccess.h>
#include <tqimage.h>
#include "SVGDocumentImpl.h"
#include "SVGSVGElementImpl.h"
#include "SVGRenderingIntent.h"
#include "SVGAnimatedStringImpl.h"
#include "SVGColorProfileElementImpl.h"
using namespace KSVG;
#include "SVGColorProfileElementImpl.lut.h"
#include "ksvg_bridge.h"
#include "ksvg_ecma.h"
SVGColorProfileElementImpl::SVGColorProfileElementImpl(DOM::ElementImpl *impl) : SVGElementImpl(impl), SVGURIReferenceImpl()
{
KSVG_EMPTY_FLAGS
m_loaded = false;
// Spec: Default value 'auto', if not overwritten later
m_renderingIntent = RENDERING_INTENT_AUTO;
}
SVGColorProfileElementImpl::~SVGColorProfileElementImpl()
{
if(m_loaded)
closeColorProfile();
}
/*
@namespace KSVG
@begin SVGColorProfileElementImpl::s_hashTable 5
name SVGColorProfileElementImpl::Name DontDelete|ReadOnly
href SVGColorProfileElementImpl::Href DontDelete|ReadOnly
rendering-intent SVGColorProfileElementImpl::RenderingIntent DontDelete|ReadOnly
@end
*/
Value SVGColorProfileElementImpl::getValueProperty(ExecState *exec, int token) const
{
switch(token)
{
case Name:
return String(m_name);
case Href:
return href()->cache(exec);
case RenderingIntent:
return Number(m_renderingIntent);
default:
kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl;
return Undefined();
}
}
void SVGColorProfileElementImpl::putValueProperty(ExecState *exec, int token, const Value &value, int attr)
{
// This class has just ReadOnly properties, only with the Internal flag set
// it's allowed to modify those.
if(!(attr & KJS::Internal))
return;
switch(token)
{
case Name:
m_name = value.toString(exec).string();
ownerDoc()->rootElement()->addToIdMap(m_name.string(), this);
break;
case Href:
href()->setBaseVal(value.toString(exec).string());
break;
case RenderingIntent:
{
TQString compare = value.toString(exec).qstring().lower();
if(compare == "perceptual")
m_renderingIntent = RENDERING_INTENT_PERCEPTUAL;
else if(compare == "relative-colorimetric")
m_renderingIntent = RENDERING_INTENT_RELATIVE_COLORIMETRIC;
else if(compare == "saturation")
m_renderingIntent = RENDERING_INTENT_SATURATION;
else if(compare == "absolute-colorimetric")
m_renderingIntent = RENDERING_INTENT_ABSOLUTE_COLORIMETRIC;
else
m_renderingIntent = RENDERING_INTENT_AUTO;
break;
}
default:
kdWarning() << "Unhandled token in " << k_funcinfo << " : " << token << endl;
}
}
void SVGColorProfileElementImpl::setLocal(const DOM::DOMString &local)
{
m_local = local;
}
DOM::DOMString SVGColorProfileElementImpl::local() const
{
return m_local;
}
void SVGColorProfileElementImpl::setName(const DOM::DOMString &name)
{
m_name = name;
}
DOM::DOMString SVGColorProfileElementImpl::name() const
{
return m_name;
}
void SVGColorProfileElementImpl::setRenderingIntent(unsigned short renderingIntent)
{
m_renderingIntent = renderingIntent;
}
unsigned short SVGColorProfileElementImpl::renderingIntent() const
{
return m_renderingIntent;
}
bool SVGColorProfileElementImpl::canLoad()
{
TQString open;
bool temp;
return canLoad(false, temp, open, true);
}
bool SVGColorProfileElementImpl::canLoad(bool remote, bool &tempFile, TQString &open, bool verbose)
{
KURL file;
if(!KURL::isRelativeURL(href()->baseVal().string()))
file = KURL(href()->baseVal().string());
else
file = KURL(ownerDoc()->baseUrl(), href()->baseVal().string());
if(file.path().isEmpty())
{
if(verbose)
kdDebug() << "Couldn't load color profile " << file.path() << "!" << endl;
return false;
}
if(file.isLocalFile())
{
open = file.path();
if(!TQFile::exists(open))
{
if(verbose)
kdDebug() << "Couldn't load color profile " << file.path() << "! It does not exist." << endl;
return false;
}
}
else
{
if(remote)
{
if(KIO::NetAccess::download(file, open, 0))
tempFile = true;
}
}
return true;
}
bool SVGColorProfileElementImpl::loadColorProfile()
{
TQString open;
bool tempFile = false;
if(!canLoad(true, tempFile, open, false))
return false;
m_hInput = cmsOpenProfileFromFile(open.latin1(), "r");
m_hOutput = cmsCreate_sRGBProfile();
unsigned int dwIn = BYTES_SH(2) | CHANNELS_SH(_cmsChannelsOf(m_inputColorSpace));
unsigned int dwOut = BYTES_SH(2) | CHANNELS_SH(_cmsChannelsOf(m_outputColorSpace));
if(m_renderingIntent != RENDERING_INTENT_AUTO)
m_hTrans = cmsCreateTransform(m_hInput, dwIn, m_hOutput, dwOut, m_renderingIntent - 2, cmsFLAGS_NOTPRECALC);
else
m_hTrans = cmsCreateTransform(m_hInput, dwIn, m_hOutput, dwOut, cmsTakeRenderingIntent(m_hInput), cmsFLAGS_NOTPRECALC);
m_inputColorSpace = cmsGetColorSpace(m_hInput);
m_outputColorSpace = cmsGetColorSpace(m_hOutput);
m_loaded = true;
if(tempFile)
KIO::NetAccess::removeTempFile(open);
return true;
}
void SVGColorProfileElementImpl::closeColorProfile()
{
cmsDeleteTransform(m_hTrans);
cmsCloseProfile(m_hInput);
}
TQRgb SVGColorProfileElementImpl::correctPixel(float r, float g, float b)
{
if(!m_loaded)
{
if(!loadColorProfile())
return tqRgb(0, 0, 0);
}
unsigned short input[MAXCHANNELS], output[MAXCHANNELS];
input[0] = ((unsigned int) r) * 257;
input[1] = ((unsigned int) g) * 257;
input[2] = ((unsigned int) b) * 257;
cmsDoTransform(m_hTrans, input, output, 1);
if(m_outputColorSpace == icSigRgbData)
return tqRgb(output[0] / 257, output[1] / 257, output[2] / 257);
return tqRgb(0, 0, 0);
}
TQImage *SVGColorProfileElementImpl::correctImage(TQImage *input)
{
if(!canLoad())
return input;
for(int y = 0; y < input->height(); y++)
{
for(int x = 0; x < input->width(); x++)
{
TQRgb pixel = input->pixel(x, y);
input->setPixel(x, y, correctPixel(tqRed(pixel), tqGreen(pixel), tqBlue(pixel)));
}
}
return input;
}
// vim:ts=4:noet