1 files changed, 140 insertions, 0 deletions
diff --git a/src/trace/depixelize/inkscape-depixelize.cpp b/src/trace/depixelize/inkscape-depixelize.cpp
new file mode 100644
index 0000000..a61ff8b
--- /dev/null
+++ b/src/trace/depixelize/inkscape-depixelize.cpp
@@ -0,0 +1,140 @@
+// 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 "inkscape-depixelize.h"
+
+#include <glibmm/i18n.h>
+#include <gtkmm/main.h>
+#include <gtkmm.h>
+#include <iomanip>
+
+#include "desktop.h"
+#include "message-stack.h"
+#include "helper/geom.h"
+#include "object/sp-path.h"
+
+#include "display/cairo-templates.h"
+
+#include <svg/path-string.h>
+#include <svg/svg.h>
+#include <svg/svg-color.h>
+#include "svg/css-ostringstream.h"
+
+using Glib::ustring;
+
+
+
+namespace Inkscape {
+
+namespace Trace {
+
+namespace Depixelize {
+
+
+/**
+ *
+ */
+DepixelizeTracingEngine::DepixelizeTracingEngine()
+    : keepGoing(1)
+    , traceType(TRACE_VORONOI)
+{
+    params = new ::Tracer::Kopf2011::Options();
+}
+
+
+
+DepixelizeTracingEngine::DepixelizeTracingEngine(TraceType traceType, double curves, int islands, int sparsePixels,
+                                                 double sparseMultiplier, bool optimize)
+    : keepGoing(1)
+    , traceType(traceType)
+{
+    params = new ::Tracer::Kopf2011::Options();
+    params->curvesMultiplier = curves;
+    params->islandsWeight = islands;
+    params->sparsePixelsRadius = sparsePixels;
+    params->sparsePixelsMultiplier = sparseMultiplier;
+    params->optimize = optimize;
+    params->nthreads = Inkscape::Preferences::get()->getIntLimited("/options/threading/numthreads",
+#ifdef HAVE_OPENMP
+                                                                   omp_get_num_procs(),
+#else
+                                                                   1,
+#endif // HAVE_OPENMP
+                                                                   1, 256);
+}
+
+DepixelizeTracingEngine::~DepixelizeTracingEngine() { delete params; }
+
+std::vector<TracingEngineResult> DepixelizeTracingEngine::trace(Glib::RefPtr<Gdk::Pixbuf> pixbuf)
+{
+    std::vector<TracingEngineResult> res;
+
+    if (pixbuf->get_width() > 256 || pixbuf->get_height() > 256) {
+        char *msg = _("Image looks too big. Process may take a while and it is"
+                      " wise to save your document before continuing."
+                      "\n\nContinue the procedure (without saving)?");
+        Gtk::MessageDialog dialog(msg, false, Gtk::MESSAGE_WARNING, Gtk::BUTTONS_OK_CANCEL, true);
+
+        if (dialog.run() != Gtk::RESPONSE_OK) {
+            return res;
+        }
+    }
+
+    ::Tracer::Splines splines;
+
+    if (traceType == TRACE_VORONOI)
+        splines = ::Tracer::Kopf2011::to_voronoi(pixbuf, *params);
+    else
+        splines = ::Tracer::Kopf2011::to_splines(pixbuf, *params);
+
+    for (::Tracer::Splines::const_iterator it = splines.begin(), end = splines.end(); it != end; ++it) {
+                gchar 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 << float(it->rgba[3]) / 255.;
+        gchar* style = g_strdup_printf("fill:%s;fill-opacity:%s;", b, osalpha.str().c_str());
+        printf("%s\n", style);
+        TracingEngineResult r(style, sp_svg_write_path(it->pathVector), count_pathvector_nodes(it->pathVector));
+        res.push_back(r);
+        g_free(style);
+    }
+    return res;
+}
+
+void DepixelizeTracingEngine::abort() { keepGoing = 0; }
+
+Glib::RefPtr<Gdk::Pixbuf> DepixelizeTracingEngine::preview(Glib::RefPtr<Gdk::Pixbuf> pixbuf) { return pixbuf; }
+
+
+} // 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 :