From d7c51ea3892dcad46e01642475479ff2379a51ad Mon Sep 17 00:00:00 2001
From: "Johan B. C. Engelen" <jbc.engelen@swissonline.ch>
Date: Tue, 10 Apr 2012 19:27:41 +0200
Subject: powerstroke: remove the need to reload the node tool when
 adding/deleting control width knots

(bzr r11210)
---
 .../parameter/powerstrokepointarray.cpp            | 45 ++++++++++++++++------
 1 file changed, 33 insertions(+), 12 deletions(-)

(limited to 'src/live_effects/parameter/powerstrokepointarray.cpp')

diff --git a/src/live_effects/parameter/powerstrokepointarray.cpp b/src/live_effects/parameter/powerstrokepointarray.cpp
index 9d91dff18..06048cb32 100644
--- a/src/live_effects/parameter/powerstrokepointarray.cpp
+++ b/src/live_effects/parameter/powerstrokepointarray.cpp
@@ -184,29 +184,50 @@ PowerStrokePointArrayParamKnotHolderEntity::knot_get()
 void
 PowerStrokePointArrayParamKnotHolderEntity::knot_click(guint state)
 {
-//g_print ("This is the %d handle associated to parameter '%s'\n", _index, _pparam->param_key.c_str());
-    bool knotarray_changed = false;
-
     if (state & GDK_CONTROL_MASK) {
         if (state & GDK_MOD1_MASK) {
             // delete the clicked knot
             std::vector<Geom::Point> & vec = _pparam->_vector;
             vec.erase(vec.begin() + _index);
             _pparam->param_set_and_write_new_value(vec);
-            knotarray_changed = true;
+
+            // remove knot from knotholder
+            parent_holder->entity.remove(this);
+            // shift knots down one index
+            for(std::list<KnotHolderEntity *>::iterator ent = parent_holder->entity.begin(); ent != parent_holder->entity.end(); ++ent) {
+                PowerStrokePointArrayParamKnotHolderEntity *pspa_ent = dynamic_cast<PowerStrokePointArrayParamKnotHolderEntity *>(*ent);
+                if ( pspa_ent && pspa_ent->_pparam == this->_pparam ) {  // check if the knotentity belongs to this powerstrokepointarray parameter
+                    if (pspa_ent->_index > this->_index) {
+                        --pspa_ent->_index;
+                    }
+                }
+            };
+            // delete self and return
+            delete this;
+            return;
         } else {
-            // add a knot
+            // add a knot to XML
             std::vector<Geom::Point> & vec = _pparam->_vector;
-            vec.insert(vec.begin() + _index, 1, vec.at(_index));
+            vec.insert(vec.begin() + _index, 1, vec.at(_index)); // this clicked knot is duplicated
             _pparam->param_set_and_write_new_value(vec);
-            knotarray_changed = true;
+
+            // shift knots up one index
+            for(std::list<KnotHolderEntity *>::iterator ent = parent_holder->entity.begin(); ent != parent_holder->entity.end(); ++ent) {
+                PowerStrokePointArrayParamKnotHolderEntity *pspa_ent = dynamic_cast<PowerStrokePointArrayParamKnotHolderEntity *>(*ent);
+                if ( pspa_ent && pspa_ent->_pparam == this->_pparam ) {  // check if the knotentity belongs to this powerstrokepointarray parameter
+                    if (pspa_ent->_index > this->_index) {
+                        ++pspa_ent->_index;
+                    }
+                }
+            };
+            // add knot to knotholder
+            PowerStrokePointArrayParamKnotHolderEntity *e = new PowerStrokePointArrayParamKnotHolderEntity(_pparam, _index+1);
+            e->create(  this->desktop, this->item, parent_holder,
+                        _("<b>Stroke width control point</b>: drag to alter the stroke width. <b>Ctrl+click</b> adds a control point, <b>Ctrl+Alt+click</b> deletes it."),
+                        _pparam->knot_shape, _pparam->knot_mode, _pparam->knot_color);
+            parent_holder->add(e);
         }
     } 
-
-    if (knotarray_changed) {
-        // if knot array has been changed, the on-canvas knots must be reloaded
-        /// \todo reload!
-   }
 }
 
 void
-- 
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