From dcdf9a8ec150cdd1cccc11bc7565b90eea021d1b Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@koefferlein.de>
Date: Sun, 12 Jul 2020 21:06:03 +0200
Subject: [PATCH] WIP: paths for tree model too

---
 .../laybasic/layNetlistBrowserModel.h         |  3 ++
 .../laybasic/layNetlistBrowserPage.cc         | 10 ++---
 .../laybasic/layNetlistBrowserTreeModel.cc    | 40 +++++++++++++++++++
 .../laybasic/layNetlistBrowserTreeModel.h     |  2 +
 4 files changed, 50 insertions(+), 5 deletions(-)

diff --git a/src/laybasic/laybasic/layNetlistBrowserModel.h b/src/laybasic/laybasic/layNetlistBrowserModel.h
index 16496e471..1fd624ce8 100644
--- a/src/laybasic/laybasic/layNetlistBrowserModel.h
+++ b/src/laybasic/laybasic/layNetlistBrowserModel.h
@@ -183,6 +183,9 @@ private:
  */
 struct LAYBASIC_PUBLIC NetlistObjectPath
 {
+  typedef std::list<std::pair<const db::SubCircuit *, const db::SubCircuit *> > path_type;
+  typedef path_type::const_iterator path_iterator;
+
   NetlistObjectPath () { }
 
   bool operator== (const NetlistObjectPath &other) const
diff --git a/src/laybasic/laybasic/layNetlistBrowserPage.cc b/src/laybasic/laybasic/layNetlistBrowserPage.cc
index d0cb92b98..9f9de9fcb 100644
--- a/src/laybasic/laybasic/layNetlistBrowserPage.cc
+++ b/src/laybasic/laybasic/layNetlistBrowserPage.cc
@@ -323,6 +323,7 @@ NetlistBrowserPage::current_tree_index_changed (const QModelIndex &index)
       return;
     }
 
+    //  TODO: this could give a path ...
     std::pair<const db::Circuit *, const db::Circuit *> circuits = tree_model->circuits_from_index (index);
     QModelIndex circuit_index = netlist_model->index_from_circuit (circuits);
 
@@ -346,8 +347,8 @@ NetlistBrowserPage::current_index_changed (const QModelIndex &index)
 
     add_to_history (index, true);
 
-    std::pair<const db::Circuit *, const db::Circuit *> circuits = netlist_model->circuit_from_index (index);
-    QModelIndex circuit_index = tree_model->index_from_circuits (circuits);
+    NetlistObjectPath path = netlist_model->netpath_from_index (index);
+    QModelIndex circuit_index = tree_model->index_from_netpath (path);
 
     m_signals_enabled = false;
     hierarchy_tree->setCurrentIndex (circuit_index);
@@ -516,9 +517,8 @@ NetlistBrowserPage::navigate_to (const QModelIndex &index, bool fwd)
       return;
     }
 
-    //  @@@ with path!
-    std::pair<const db::Circuit *, const db::Circuit *> circuits = netlist_model->circuit_from_index (index);
-    QModelIndex circuit_index = tree_model->index_from_circuits (circuits);
+    lay::NetlistObjectPath path = netlist_model->netpath_from_index (index);
+    QModelIndex circuit_index = tree_model->index_from_netpath (path);
     hierarchy_tree->setCurrentIndex (circuit_index);
 
   } catch (...) {
diff --git a/src/laybasic/laybasic/layNetlistBrowserTreeModel.cc b/src/laybasic/laybasic/layNetlistBrowserTreeModel.cc
index 24cfb3c34..db47fad4b 100644
--- a/src/laybasic/laybasic/layNetlistBrowserTreeModel.cc
+++ b/src/laybasic/laybasic/layNetlistBrowserTreeModel.cc
@@ -24,6 +24,7 @@
 #include "layNetlistBrowserTreeModel.h"
 #include "layIndexedNetlistModel.h"
 #include "layNetlistCrossReferenceModel.h"
+#include "layNetlistBrowserModel.h"
 
 #include <QPainter>
 #include <QIcon>
@@ -257,6 +258,45 @@ NetlistBrowserTreeModel::build_circuits_to_index (size_t nprod, const std::pair<
   }
 }
 
+static bool is_compatible (const std::pair<const db::Circuit *, const db::Circuit *> &a, const std::pair<const db::Circuit *, const db::Circuit *> &b)
+{
+  if (a.first && b.first && a.first == b.first) {
+    return true;
+  } else if (a.second && b.second && a.second == b.second) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
+QModelIndex
+NetlistBrowserTreeModel::index_from_netpath (const NetlistObjectPath &path) const
+{
+  QModelIndex idx;
+
+  idx = index_from_circuits (path.root);
+
+  for (NetlistObjectPath::path_iterator p = path.path.begin (); p != path.path.end () && idx.isValid (); ++p) {
+
+    std::pair<const db::Circuit *, const db::Circuit *> sc (p->first ? p->first->circuit_ref () : 0, p->second ? p->second->circuit_ref (): 0);
+    std::pair<const db::Circuit *, const db::Circuit *> circuit = circuits_from_index (idx);
+
+    size_t count = mp_indexer->child_circuit_count (circuit);
+    for (size_t n = count; n > 0; ) {
+      --n;
+      std::pair<const db::Circuit *, const db::Circuit *> cc = mp_indexer->child_circuit_from_index (circuit, n).first;
+      if (is_compatible (sc, cc)) {
+        circuit = cc;
+        idx = index (n, 0, idx);
+        break;
+      }
+    }
+
+  }
+
+  return idx;
+}
+
 QModelIndex
 NetlistBrowserTreeModel::index_from_circuits (const std::pair<const db::Circuit *, const db::Circuit *> &circuits) const
 {
diff --git a/src/laybasic/laybasic/layNetlistBrowserTreeModel.h b/src/laybasic/laybasic/layNetlistBrowserTreeModel.h
index 3ecff81f1..c4fe0696d 100644
--- a/src/laybasic/laybasic/layNetlistBrowserTreeModel.h
+++ b/src/laybasic/laybasic/layNetlistBrowserTreeModel.h
@@ -42,6 +42,7 @@ namespace lay
 {
 
 class IndexedNetlistModel;
+struct NetlistObjectPath;
 
 // ----------------------------------------------------------------------------------
 //  NetlistBrowserTreeModel definition
@@ -77,6 +78,7 @@ public:
 
   std::pair<const db::Circuit *, const db::Circuit *> circuits_from_index (const QModelIndex &index) const;
   QModelIndex index_from_circuits (const std::pair<const db::Circuit *, const db::Circuit *> &circuits) const;
+  QModelIndex index_from_netpath (const NetlistObjectPath &path) const;
 
 private:
   NetlistBrowserTreeModel (const NetlistBrowserTreeModel &);