value negation

notes

@@ -44,7 +44,8 @@ TODO {
     - make space preview on port column
     - fix strut not working except to overwrite another param
     
-    add negate function to param columns
+    - add negate function to param columns
+    multi select negate
     
     revert-to-saved menu action
     

xybrid/ui/patterneditoritemdelegate.cpp

@@ -323,6 +323,10 @@ bool PatternEditorItemDelegate::editorEvent(QEvent *event, QAbstractItemModel *m
                         view->setCurrentIndex(index.siblingAtColumn(index.column()+1));
                         return dc->commit();
                     } else {
+                        if (k == Qt::Key_Minus) { // negate current value
+                            row.param(par)[1] *= -1;
+                            return dc->commit();
+                        }
                         if (k == Qt::Key_Comma) { // convenience; allow inserting an extend from number column
                             if (row.numParams() >= PatternEditorModel::paramSoftCap) return dc->cancel();
                             row.insertParam(par+1, ',');