5 files changed, 31 insertions, 2 deletions
diff --git a/src/box3d.cpp b/src/box3d.cpp
index 631d5cfc1..3c40a4800 100644
--- a/src/box3d.cpp
+++ b/src/box3d.cpp
@@ -34,6 +34,7 @@
 #include "2geom/geom.h"
 #include "sp-guide.h"
 #include "sp-namedview.h"
+#include "prefs-utils.h"
 
 #include "desktop.h"
 #include "macros.h"
@@ -1496,6 +1497,11 @@ box3d_push_back_corner_pair(SPBox3D *box, std::list<std::pair<Geom::Point, Geom:
 
 void
 box3d_convert_to_guides(SPBox3D *box, bool write_undo) {
+    if (prefs_get_int_attribute("tools.shapes.3dbox", "convertguides", 1) == 0) {
+        sp_item_convert_to_guides(SP_ITEM(box));
+        return;
+    }
+
     SPDocument *doc = SP_OBJECT_DOCUMENT(box);
     //SPDesktop *desktop = inkscape_active_desktop();
     //Inkscape::XML::Document *xml_doc = sp_document_repr_doc(doc);
diff --git a/src/sp-item.cpp b/src/sp-item.cpp
index f24bf6ecc..7b3687607 100644
--- a/src/sp-item.cpp
+++ b/src/sp-item.cpp
@@ -34,6 +34,8 @@
 #include "attributes.h"
 #include "document.h"
 #include "uri.h"
+#include "inkscape.h"
+#include "desktop-handles.h"
 
 #include "style.h"
 #include <glibmm/i18n.h>
@@ -1579,9 +1581,15 @@ sp_item_first_item_child (SPObject *obj)
 
 void
 sp_item_convert_to_guides(SPItem *item) {
-    NR::Maybe<NR::Rect> bbox = sp_item_bbox_desktop(item, SPItem::GEOMETRIC_BBOX);
+    SPDesktop *dt = inkscape_active_desktop();
+    SPNamedView *nv = sp_desktop_namedview(dt);
+
+    gchar const *prefs_bbox = prefs_get_string_attribute("tools.select", "bounding_box");
+    SPItem::BBoxType bbox_type = (prefs_bbox != NULL && strcmp(prefs_bbox, "geometric")==0)? SPItem::GEOMETRIC_BBOX : SPItem::RENDERING_BBOX;
+
+    NR::Maybe<NR::Rect> bbox = sp_item_bbox_desktop(item, bbox_type);
     if (!bbox) {
-        g_print ("Cannot determine bounding box. Doing nothing.\n");
+        g_warning ("Cannot determine item's bounding box during conversion to guides.\n");
         return;
     }
 
diff --git a/src/sp-rect.cpp b/src/sp-rect.cpp
index e8e04cc51..5770e623d 100644
--- a/src/sp-rect.cpp
+++ b/src/sp-rect.cpp
@@ -29,6 +29,7 @@
 #include <glibmm/i18n.h>
 #include "xml/repr.h"
 #include "sp-guide.h"
+#include "prefs-utils.h"
 
 #define noRECT_VERBOSE
 
@@ -581,6 +582,11 @@ static void sp_rect_snappoints(SPItem const *item, SnapPointsIter p)
 
 void
 sp_rect_convert_to_guides(SPRect *rect, bool write_undo) {
+    if (prefs_get_int_attribute("tools.shapes.rect", "convertguides", 1) == 0) {
+        sp_item_convert_to_guides(SP_ITEM(rect));
+        return;
+    }
+
     SPDocument *doc = SP_OBJECT_DOCUMENT(rect);
     std::list<std::pair<Geom::Point, Geom::Point> > pts;
 
diff --git a/src/ui/dialog/inkscape-preferences.cpp b/src/ui/dialog/inkscape-preferences.cpp
index e88ba74b1..b07914265 100644
--- a/src/ui/dialog/inkscape-preferences.cpp
+++ b/src/ui/dialog/inkscape-preferences.cpp
@@ -229,6 +229,12 @@ void InkscapePreferences::AddGradientCheckbox(DialogPage& p, const std::string&
     p.add_line( false, "", *cb, "", _("Whether selected objects display gradient editing controls"));
 }
 
+void InkscapePreferences::AddConvertGuidesCheckbox(DialogPage& p, const std::string& prefs_path, bool def_value) {
+    PrefCheckButton* cb = Gtk::manage( new PrefCheckButton);
+    cb->init ( _("Conversion to guides uses edges instead of bounding box"), prefs_path, "convertguides", def_value);
+    p.add_line( false, "", *cb, "", _("Converting an object to guides places these along the object's true edges (imitating the object's shape), not along the bounding box."));
+}
+
 void StyleFromSelectionToTool(gchar const *prefs_path, StyleSwatch *swatch)
 {
     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
@@ -374,9 +380,11 @@ void InkscapePreferences::initPageTools()
     //Rectangle
     this->AddPage(_page_rectangle, _("Rectangle"), iter_shapes, PREFS_PAGE_TOOLS_SHAPES_RECT);
     this->AddNewObjectsStyle(_page_rectangle, "tools.shapes.rect");
+    this->AddConvertGuidesCheckbox(_page_rectangle, "tools.shapes.rect", true);
     //3D box
     this->AddPage(_page_3dbox, _("3D Box"), iter_shapes, PREFS_PAGE_TOOLS_SHAPES_3DBOX);
     this->AddNewObjectsStyle(_page_3dbox, "tools.shapes.3dbox");
+    this->AddConvertGuidesCheckbox(_page_3dbox, "tools.shapes.3dbox", true);
     //ellipse
     this->AddPage(_page_ellipse, _("Ellipse"), iter_shapes, PREFS_PAGE_TOOLS_SHAPES_ELLIPSE);
     this->AddNewObjectsStyle(_page_ellipse, "tools.shapes.arc");
diff --git a/src/ui/dialog/inkscape-preferences.h b/src/ui/dialog/inkscape-preferences.h
index b0c47a8f0..fd340769e 100644
--- a/src/ui/dialog/inkscape-preferences.h
+++ b/src/ui/dialog/inkscape-preferences.h
@@ -215,6 +215,7 @@ protected:
 
     static void AddSelcueCheckbox(DialogPage& p, const std::string& prefs_path, bool def_value);
     static void AddGradientCheckbox(DialogPage& p, const std::string& prefs_path, bool def_value);
+    static void AddConvertGuidesCheckbox(DialogPage& p, const std::string& prefs_path, bool def_value);
     static void AddNewObjectsStyle(DialogPage& p, const std::string& prefs_path);
 
     void on_pagelist_selection_changed();