Fix a minor problem, and a little tidying.

[synfig.git] / synfig-studio / trunk / src / gtkmm / canvasview.cpp

diff --git a/synfig-studio/trunk/src/gtkmm/canvasview.cpp b/synfig-studio/trunk/src/gtkmm/canvasview.cpp
index 2c48158..b9cc89f 100644 (file)
--- a/synfig-studio/trunk/src/gtkmm/canvasview.cpp
+++ b/synfig-studio/trunk/src/gtkmm/canvasview.cpp
@@ -55,6 +55,7 @@
 #include <synfig/valuenode_stripes.h>
 #include <synfig/valuenode_blinecalctangent.h>
 #include <synfig/valuenode_blinecalcvertex.h>
+#include <synfig/valuenode_blinecalcwidth.h>
 #include <synfig/valuenode_bline.h>
 #include <synfig/layer.h>
 
@@ -2589,11 +2590,20 @@ CanvasView::on_duck_changed(const synfig::Point &value,const synfigapp::ValueDes
        switch(value_desc.get_value_type())
        {
        case ValueBase::TYPE_REAL:
+               if (ValueNode_BLineCalcWidth::Handle bline_width = ValueNode_BLineCalcWidth::Handle::cast_dynamic(value_desc.get_value_node()))
+               {
+                       Real old_width((*bline_width)(get_time()).get(Real()));
+                       Real new_width(value.mag());
+                       int scale_index(bline_width->get_link_index_from_name("scale"));
+                       Real scale((*(bline_width->get_link(scale_index)))(get_time()).get(Real()));
+                       return canvas_interface()->change_value(synfigapp::ValueDesc(bline_width,scale_index), new_width * scale / old_width);
+               }
+
                return canvas_interface()->change_value(value_desc,value.mag());
-               break;
+
        case ValueBase::TYPE_ANGLE:
                return canvas_interface()->change_value(value_desc,Angle::tan(value[1],value[0]));
-               break;
+
        case ValueBase::TYPE_VECTOR:
                if (ValueNode_BLineCalcTangent::Handle bline_tangent = ValueNode_BLineCalcTangent::Handle::cast_dynamic(value_desc.get_value_node()))
                {