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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.
*
*/
#ifndef __INKSCAPE_POTRACE_H__
#define __INKSCAPE_POTRACE_H__
#include <trace/trace.h>
#include <potracelib.h>
struct GrayMap_def;
typedef GrayMap_def GrayMap;
namespace Inkscape {
namespace Trace {
namespace Potrace {
enum TraceType
{
TRACE_BRIGHTNESS,
TRACE_BRIGHTNESS_MULTI,
TRACE_CANNY,
TRACE_QUANT,
TRACE_QUANT_COLOR,
TRACE_QUANT_MONO,
// Used in tradedialog.cpp
AUTOTRACE_SINGLE,
AUTOTRACE_MULTI,
AUTOTRACE_CENTERLINE
};
class PotraceTracingEngine : public TracingEngine
{
public:
/**
*
*/
PotraceTracingEngine();
PotraceTracingEngine(TraceType traceType, bool invert, int quantizationNrColors, double brightnessThreshold, double brightnessFloor, double cannyHighThreshold, int multiScanNrColors, bool multiScanStack, bool multiScanSmooth, bool multiScanRemoveBackground);
/**
*
*/
~PotraceTracingEngine() override;
/**
* This is the working method of this implementing class, and all
* implementing classes. Take a GdkPixbuf, trace it, and
* return the path data that is compatible with the d="" attribute
* of an SVG <path> element.
*/
std::vector<TracingEngineResult> trace(
Glib::RefPtr<Gdk::Pixbuf> pixbuf) override;
/**
* Abort the thread that is executing getPathDataFromPixbuf()
*/
void abort() override;
/**
*
*/
Glib::RefPtr<Gdk::Pixbuf> preview(Glib::RefPtr<Gdk::Pixbuf> pixbuf);
/**
*
*/
int keepGoing;
std::vector<TracingEngineResult>traceGrayMap(GrayMap *grayMap);
potrace_param_t *potraceParams;
TraceType traceType;
//## do I invert at the end?
bool invert;
//## Color-->b&w quantization
int quantizationNrColors;
//## brightness items
double brightnessThreshold;
double brightnessFloor; //usually 0.0
//## canny items
double cannyHighThreshold;
//## Color-->multiscan quantization
int multiScanNrColors;
bool multiScanStack; //do we tile or stack?
bool multiScanSmooth;//do we use gaussian filter?
bool multiScanRemoveBackground; //do we remove the bottom trace?
private:
/**
* This is the actual wrapper of the call to Potrace. nodeCount
* returns the count of nodes created. May be NULL if ignored.
*/
std::string grayMapToPath(GrayMap *gm, long *nodeCount);
std::vector<TracingEngineResult>traceBrightnessMulti(GdkPixbuf *pixbuf);
std::vector<TracingEngineResult>traceQuant(GdkPixbuf *pixbuf);
std::vector<TracingEngineResult>traceSingle(GdkPixbuf *pixbuf);
};//class PotraceTracingEngine
} // namespace Potrace
} // namespace Trace
} // namespace Inkscape
#endif //__INKSCAPE_POTRACE_H__
/*
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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