Add a widget for filtering c3t3 subdomains

Polyhedron/demo/Polyhedron/Plugins/Mesh_3/Filter_widget.ui

@@ -14,18 +14,34 @@
    <string>Filter Domain</string>
   </property>
   <widget class="QWidget" name="dockWidgetContents">
-   <layout class="QVBoxLayout" name="verticalLayout_2">
+   <layout class="QVBoxLayout" name="verticalLayout" stretch="0,1">
     <item>
-     <layout class="QVBoxLayout" name="verticalLayout">
+     <layout class="QHBoxLayout" name="horizontalLayout_2">
       <item>
-       <widget class="QLabel" name="test_label">
+       <spacer name="horizontalSpacer">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="sizeHint" stdset="0">
+         <size>
+          <width>40</width>
+          <height>20</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
+      <item>
+       <widget class="QPushButton" name="resetButton">
         <property name="text">
-         <string>plouf</string>
+         <string>Reset Item</string>
         </property>
        </widget>
       </item>
      </layout>
     </item>
+    <item>
+     <layout class="QHBoxLayout" name="horizontalLayout"/>
+    </item>
    </layout>
   </widget>
  </widget>

Polyhedron/demo/Polyhedron/Plugins/Mesh_3/Mesh_3_filter_domain_plugin.cpp

@@ -75,16 +75,60 @@ public Q_SLOTS:
     if(!c3t3_item)
       return;
 
+
+    for (std::set<int>::iterator it = c3t3_item->subdomain_indices().begin(),
+         end = c3t3_item->subdomain_indices().end(); it != end; ++it)
+    {
+      int index = *it;
+      QPushButton* button = new QPushButton(tr("%1").arg(index));
+      buttons.push_back(button);
+      button->setCheckable(true);
+      button->setChecked(true);
+      QColor color = c3t3_item->getSubdomainIndexColor(index);
+      QString s("QPushButton { font-weight: bold; background: #"
+                + QString::number(color.red(),16)
+                + QString::number(color.green(),16)
+                + QString::number(color.blue(),16)
+                + "; }");
+
+      button->setStyleSheet(s);
+      connect(button, &QPushButton::toggled, [index, c3t3_item](bool){
+        c3t3_item->switchVisibleSubdomain(index);
+      });
+
+      dock_widget->horizontalLayout->addWidget(button);
+    }
+
+
+    auto cleanup = [this, c3t3_item](){
+      while(!buttons.empty())
+      {
+        auto button = buttons.back();
+        buttons.pop_back();
+        dock_widget->horizontalLayout->removeWidget(button);
+        buttons.removeAll(button);
+        delete button;
+      }
+      dock_widget->hide();
+      //todo : trouver comment disconnect clean-up, pour pas que ça se connect 36 fois qunad tu appuies sur reset.
+      std::cout<<"cleaned."<<std::endl;
+    };
+    connect(c3t3_item, &Scene_c3t3_item::aboutToBeDestroyed, cleanup);
+    //Is it safe ? Will they be called in that order ?
+    connect(dock_widget->resetButton, &QPushButton::clicked, [this, cleanup](){
+      cleanup();
+      filter();
+    });
+
     dock_widget->show();
     dock_widget->raise();
-
-    dock_widget->test_label->setText(QString("This item has %1 subdomains.").arg(c3t3_item->subdomain_indices().size()));
-
   }
 
 private:
   QAction* actionFilter;
   DockWidget* dock_widget;
+  QVector<QPushButton*> buttons;
+
 };
 
 #include "Mesh_3_filter_domain_plugin.moc"

Polyhedron/demo/Polyhedron/Scene_c3t3_item.cpp

@@ -30,6 +30,7 @@
 #include <CGAL/Qt/qglviewer.h>
 
 #include <boost/iterator/function_output_iterator.hpp>
+#include <boost/dynamic_bitset.hpp>
 
 #include <CGAL/AABB_tree.h>
 #include <CGAL/AABB_traits.h>
@@ -501,6 +502,8 @@ struct Scene_c3t3_item_priv {
   Tree tree;
   QVector<QColor> colors;
   QVector<QColor> colors_subdomains;
+  boost::dynamic_bitset<> visible_subdomain;
+
   bool show_tetrahedra;
   bool is_aabb_tree_built;
   bool cnc_are_shown;
@@ -659,6 +662,7 @@ Scene_c3t3_item::c3t3_changed()
   // Fill indices map and get max subdomain value
   d->surface_patch_indices_.clear();
   d->subdomain_indices_.clear();
+  d->visible_subdomain.clear();
 
   int max = 0;
   for (C3t3::Cells_in_complex_iterator cit = this->c3t3().cells_in_complex_begin(),
@@ -668,6 +672,7 @@ Scene_c3t3_item::c3t3_changed()
     d->subdomain_indices_.insert(cit->subdomain_index());
   }
   const int max_subdomain_index = max;
+  d->visible_subdomain.resize(max_subdomain_index+1, true);
   for (C3t3::Facets_in_complex_iterator fit = this->c3t3().facets_in_complex_begin(),
     end = this->c3t3().facets_in_complex_end(); fit != end; ++fit)
   {
@@ -2130,10 +2135,30 @@ std::size_t Scene_c3t3_item::number_of_patches() const
   return d->surface_patch_indices_.size();
 }
 
-std::set<int> Scene_c3t3_item::subdomain_indices() const
+const std::set<int>& Scene_c3t3_item::subdomain_indices() const
 {
   return d->subdomain_indices_;
 }
 
+QColor Scene_c3t3_item::getSubdomainIndexColor(int i) const
+{
+  return d->colors_subdomains[i];
+}
+
+void Scene_c3t3_item::switchVisibleSubdomain(int i)
+{
+  d->visible_subdomain[i] = !d->visible_subdomain[i];
+  \
+  //to remove
+  if(d->visible_subdomain[i])
+  {
+    std::cout<<"Subdomain "<<i<<"is visible"<<std::endl;
+  }
+  else
+  {
+    std::cout<<"Subdomain "<<i<<"is hidden"<<std::endl;
+  }
+}
+
 #include "Scene_c3t3_item.moc"
 

Polyhedron/demo/Polyhedron/Scene_c3t3_item.h

@@ -129,7 +129,8 @@ public:
     bool keyPressEvent(QKeyEvent *) Q_DECL_OVERRIDE;
     bool eventFilter(QObject *, QEvent *) Q_DECL_OVERRIDE;
     std::size_t number_of_patches() const;
-    std::set<int> subdomain_indices() const;
+    const std::set<int> &subdomain_indices() const;
+    QColor getSubdomainIndexColor(int i) const;
   public Q_SLOTS:
 
   void on_spheres_color_changed();
@@ -145,6 +146,7 @@ public:
   void show_grid(bool b);
   void show_cnc(bool b);
 
+
   virtual QPixmap graphicalToolTip() const Q_DECL_OVERRIDE;
 
   void update_histogram();
@@ -163,6 +165,8 @@ public:
   void set_detect_borders(bool b);
   bool get_detect_borders();
 
+  void switchVisibleSubdomain(int);
+
   void itemAboutToBeDestroyed(Scene_item *) Q_DECL_OVERRIDE;
 
   void initializeBuffers(Viewer_interface *) const Q_DECL_OVERRIDE;