Add some Vlava improvements from mailing list

(bzr r15142.1.28)

1 files changed, 24 insertions, 0 deletions

diff --git a/src/sp-namedview.cpp b/src/sp-namedview.cpp
index df0778265..c9e71955f 100644
--- a/src/sp-namedview.cpp
+++ b/src/sp-namedview.cpp
@@ -958,6 +958,27 @@ static void sp_namedview_lock_guides(SPNamedView *nv)
     }
 }
 
+void sp_namedview_doc_rotate_guides(SPNamedView *nv)
+{
+    bool saved = DocumentUndo::getUndoSensitive(nv->document);
+    DocumentUndo::setUndoSensitive(nv->document, false);
+    SPRoot * root = nv->document->getRoot();
+    Geom::Point page_center = root->viewBox.midpoint() * root->vbt;
+    Geom::Affine rot = Geom::identity();
+    rot *= Geom::Translate(page_center).inverse(); 
+    rot *= Geom::Rotate(Geom::rad_from_deg((nv->document_rotation - root->get_rotation()) * -1));
+    rot *=  Geom::Translate(page_center);
+    for(std::vector<SPGuide *>::iterator it=nv->guides.begin();it!=nv->guides.end();++it ) {
+        Geom::Point const on_line = (*it)->getPoint() * rot ;
+        (*it)->moveto(on_line, true);
+        Geom::Affine rot_normal_affine = Geom::Rotate(Geom::rad_from_deg((nv->document_rotation - root->get_rotation()) * -1));
+        Geom::Point const rot_normal = (*it)->getNormal() * rot_normal_affine;
+        (*it)->set_normal(rot_normal, true);
+    }
+    DocumentUndo::setUndoSensitive(nv->document, saved);
+    nv->document->setModifiedSinceSave();
+}
+
 void sp_namedview_set_document_rotation(SPNamedView *nv)
 {
     if ( nv->document->getRoot()->get_rotation() == nv->document_rotation) return;
@@ -984,6 +1005,7 @@ void sp_namedview_set_document_rotation(SPNamedView *nv)
             sp_canvas_item_affine_absolute(canvas_border, rot * root->vbt);
             nv->page_border_rotated = desktop->add_temporary_canvasitem(canvas_border, 0); 
         }
+        sp_namedview_doc_rotate_guides(nv);
         nv->document->getRoot()->set_rotation(nv->document_rotation);
         c->unref();
     }
@@ -1025,6 +1047,8 @@ static void sp_namedview_lock_single_guide(SPGuide* guide, bool locked)
     guide->set_locked(locked, true);
 }
 
+
+
 void sp_namedview_toggle_guides(SPDocument *doc, Inkscape::XML::Node *repr)
 {
     unsigned int v;