1 files changed, 166 insertions, 0 deletions
diff --git a/src/path/path-object-set.cpp b/src/path/path-object-set.cpp
new file mode 100644
index 0000000..f5d0770
--- /dev/null
+++ b/src/path/path-object-set.cpp
@@ -0,0 +1,166 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/** @file
+ *
+ * Path related functions for ObjectSet.
+ *
+ * Copyright (C) 2020 Tavmjong Bah
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ *
+ * TODO: Move related code from path-chemistry.cpp
+ *
+ */
+
+#include <glibmm/i18n.h>
+
+#include "document-undo.h"
+#include "message-stack.h"
+
+#include "attribute-rel-util.h"
+
+#include "object/object-set.h"
+#include "path/path-outline.h"
+#include "path/path-simplify.h"
+#include "ui/icon-names.h"
+
+using Inkscape::ObjectSet;
+
+bool
+ObjectSet::strokesToPaths(bool legacy, bool skip_undo)
+{
+  if (desktop() && isEmpty()) {
+    desktop()->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>stroked path(s)</b> to convert stroke to path."));
+    return false;
+  }
+
+  bool did = false;
+
+  Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+  if (prefs->getBool("/options/pathoperationsunlink/value", true)) {
+      did = unlinkRecursive(true);
+  }
+
+  // Need to turn on stroke scaling to ensure stroke is scaled when transformed!
+  bool scale_stroke = prefs->getBool("/options/transform/stroke", true);
+  prefs->setBool("/options/transform/stroke", true);
+
+
+  std::vector<SPItem *> my_items(items().begin(), items().end());
+
+  for (auto item : my_items) {
+    // Do not remove the object from the selection here 
+    // as we want to keep it selected if the whole operation fails
+    Inkscape::XML::Node *new_node = item_to_paths(item, legacy);
+    if (new_node) {
+      SPObject* new_item = document()->getObjectByRepr(new_node);
+
+      // Markers don't inherit properties from outside the
+      // marker. When converted to paths objects they need to be
+      // protected from inheritance. This is why (probably) the stroke
+      // to path code uses SP_STYLE_FLAG_ALWAYS when defining the
+      // style of the fill and stroke during the conversion. This
+      // means the style contains every possible property. Once we've
+      // finished the stroke to path conversion, we can eliminate
+      // unneeded properties from the style element.
+      sp_attribute_clean_recursive(new_node, SP_ATTRCLEAN_STYLE_REMOVE | SP_ATTRCLEAN_DEFAULT_REMOVE);
+
+      add(new_item); // Add to selection.
+      did = true;
+    }
+  }
+
+  // Reset
+  prefs->setBool("/options/transform/stroke", scale_stroke);
+
+  if (desktop() && !did) {
+    desktop()->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No stroked paths</b> in the selection."));
+  }
+
+  if (did && !skip_undo) {
+    Inkscape::DocumentUndo::done(document(), _("Convert stroke to path"), "");
+  } else if (!did && !skip_undo) {
+    Inkscape::DocumentUndo::cancel(document());
+  }
+
+  return did;
+}
+
+bool
+ObjectSet::simplifyPaths(bool skip_undo)
+{
+    if (desktop() && isEmpty()) {
+        desktop()->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to simplify."));
+        return false;
+    }
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    double threshold = prefs->getDouble("/options/simplifythreshold/value", 0.003);
+    bool justCoalesce = prefs->getBool(  "/options/simplifyjustcoalesce/value", false);
+
+    // Keep track of accelerated simplify
+    static gint64 previous_time = 0;
+    static gdouble multiply = 1.0;
+
+    // Get the current time
+    gint64 current_time = g_get_monotonic_time();
+
+    // Was the previous call to this function recent? (<0.5 sec)
+    if (previous_time > 0 && current_time - previous_time < 500000) {
+
+        // add to the threshold 1/2 of its original value
+        multiply  += 0.5;
+        threshold *= multiply;
+
+    } else {
+        // reset to the default
+        multiply = 1;
+    }
+
+    // Remember time for next call
+    previous_time = current_time;
+
+    // set "busy" cursor
+    if (desktop()) {
+        desktop()->setWaitingCursor();
+    }
+
+    Geom::OptRect selectionBbox = visualBounds();
+    if (!selectionBbox) {
+        std::cerr << "ObjectSet::: selection has no visual bounding box!" << std::endl;
+        return false;
+    }
+    double size = L2(selectionBbox->dimensions());
+
+    int pathsSimplified = 0;
+    std::vector<SPItem *> my_items(items().begin(), items().end());
+    for (auto item : my_items) {
+        pathsSimplified += path_simplify(item, threshold, justCoalesce, size);
+    }
+
+    if (pathsSimplified > 0 && !skip_undo) {
+        DocumentUndo::done(document(), _("Simplify"), INKSCAPE_ICON("path-simplify"));
+    }
+
+    if (desktop()) {
+        desktop()->clearWaitingCursor();
+        if (pathsSimplified > 0) {
+            desktop()->messageStack()->flashF(Inkscape::NORMAL_MESSAGE, _("<b>%d</b> paths simplified."), pathsSimplified);
+        } else {
+            desktop()->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to simplify in the selection."));
+        }
+    }
+
+    return (pathsSimplified > 0);
+}
+
+/*
+  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 :