1 files changed, 123 insertions, 0 deletions
diff --git a/src/path/path-simplify.cpp b/src/path/path-simplify.cpp
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * Simplify paths (reduce node count).
+ *//*
+ * Authors:
+ * see git history
+ *  Created by fred on Fri Dec 05 2003.
+ *  tweaked endlessly by bulia byak <buliabyak@users.sf.net>
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifdef HAVE_CONFIG_H
+#endif
+
+#include <vector>
+
+#include "path-simplify.h"
+#include "path-util.h"
+
+#include "document-undo.h"
+#include "preferences.h"
+
+#include "livarot/Path.h"
+
+#include "object/sp-item-group.h"
+#include "object/sp-path.h"
+
+using Inkscape::DocumentUndo;
+
+// Return number of paths simplified (can be greater than one if group).
+int
+path_simplify(SPItem *item, float threshold, bool justCoalesce, double size)
+{
+    //If this is a group, do the children instead
+    SPGroup* group = dynamic_cast<SPGroup *>(item);
+    if (group) {
+        int pathsSimplified = 0;
+        std::vector<SPItem*> items = sp_item_group_item_list(group);
+        for (auto item : items) {
+            pathsSimplified += path_simplify(item, threshold, justCoalesce, size);
+        }
+        return pathsSimplified;
+    }
+
+    SPPath* path = dynamic_cast<SPPath *>(item);
+    if (!path) {
+        return 0;
+    }
+
+    // There is actually no option in the preferences dialog for this!
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    bool simplifyIndividualPaths = prefs->getBool("/options/simplifyindividualpaths/value");
+    if (simplifyIndividualPaths) {
+        Geom::OptRect itemBbox = item->documentVisualBounds();
+        if (itemBbox) {
+            size = L2(itemBbox->dimensions());
+        } else {
+            size = 0;
+        }
+    }
+
+    // Correct virtual size by full transform (bug #166937).
+    size /= item->i2doc_affine().descrim();
+
+    // Save the transform, to re-apply it after simplification.
+    Geom::Affine const transform(item->transform);
+
+    /*
+       reset the transform, effectively transforming the item by transform.inverse();
+       this is necessary so that the item is transformed twice back and forth,
+       allowing all compensations to cancel out regardless of the preferences
+    */
+    item->doWriteTransform(Geom::identity());
+
+    // SPLivarot: Start  -----------------
+
+    // Get path to simplify (note that the path *before* LPE calculation is needed)
+    Path *orig = Path_for_item_before_LPE(item, false);
+    if (orig == nullptr) {
+        return 0;
+    }
+
+    if ( justCoalesce ) {
+        orig->Coalesce(threshold * size);
+    } else {
+        orig->ConvertEvenLines(threshold * size);
+        orig->Simplify(threshold * size);
+    }
+
+    // Path
+    gchar *str = orig->svg_dump_path();
+
+    // SPLivarot: End  -------------------
+
+    char const *patheffect = item->getRepr()->attribute("inkscape:path-effect");
+    if (patheffect) {
+        item->setAttribute("inkscape:original-d", str);
+    } else {
+        item->setAttribute("d", str);
+    }
+    g_free(str);
+
+    // reapply the transform
+    item->doWriteTransform(transform);
+
+    // clean up
+    if (orig) delete orig;
+
+    return 1;
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :