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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* This is the C++ glue between Inkscape and Potrace
*
* Authors:
* Bob Jamison <rjamison@titan.com>
* Stéphane Gimenez <dev@gim.name>
*
* Copyright (C) 2004-2006 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*
* Potrace, the wonderful tracer located at http://potrace.sourceforge.net,
* is provided by the generosity of Peter Selinger, to whom we are grateful.
*
*/
#include <iomanip>
#include <thread>
#include <glibmm/i18n.h>
#include "inkscape-depixelize.h"
#include "color.h"
#include "preferences.h"
#include "async/progress.h"
#include "svg/svg-color.h"
#include "svg/css-ostringstream.h"
namespace Inkscape {
namespace Trace {
namespace Depixelize {
DepixelizeTracingEngine::DepixelizeTracingEngine(TraceType traceType, double curves, int islands, int sparsePixels, double sparseMultiplier, bool optimize)
: traceType(traceType)
{
params.curvesMultiplier = curves;
params.islandsWeight = islands;
params.sparsePixelsRadius = sparsePixels;
params.sparsePixelsMultiplier = sparseMultiplier;
params.optimize = optimize;
params.nthreads = Inkscape::Preferences::get()->getIntLimited("/options/threading/numthreads", std::thread::hardware_concurrency(), 1, 256);
}
TraceResult DepixelizeTracingEngine::trace(Glib::RefPtr<Gdk::Pixbuf> const &pixbuf, Async::Progress<double> &progress)
{
TraceResult res;
::Tracer::Splines splines;
if (traceType == TraceType::VORONOI) {
splines = ::Tracer::Kopf2011::to_voronoi(pixbuf, params);
} else {
splines = ::Tracer::Kopf2011::to_splines(pixbuf, params);
}
progress.report_or_throw(0.5);
auto subprogress = Async::SubProgress(progress, 0.5, 0.5);
auto throttled = Async::ProgressStepThrottler(subprogress, 0.02);
int num_splines = std::distance(splines.begin(), splines.end());
int i = 0;
for (auto &it : splines) {
throttled.report_or_throw((double)i / num_splines);
i++;
char b[64];
sp_svg_write_color(b, sizeof(b),
SP_RGBA32_U_COMPOSE(unsigned(it.rgba[0]),
unsigned(it.rgba[1]),
unsigned(it.rgba[2]),
unsigned(it.rgba[3])));
Inkscape::CSSOStringStream osalpha;
osalpha << it.rgba[3] / 255.0f;
char *style = g_strdup_printf("fill:%s;fill-opacity:%s;", b, osalpha.str().c_str());
res.emplace_back(style, std::move(it.pathVector));
g_free(style);
}
return res;
}
Glib::RefPtr<Gdk::Pixbuf> DepixelizeTracingEngine::preview(Glib::RefPtr<Gdk::Pixbuf> const &pixbuf)
{
return pixbuf;
}
bool DepixelizeTracingEngine::check_image_size(Geom::IntPoint const &size) const
{
return size.x() > 256 || size.y() > 256;
}
} // namespace Depixelize
} // namespace Trace
} // namespace Inkscape
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
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