viewer/view_node.cpp

   1
   2 #include "view_node.h"
   3
   4 ViewNode::ViewNode (Canvas::Group *parent, uint num, uint padre, BTreeNodeHeader &header, std::list<BTreeData *> &keys)
   5         : Canvas::Group (*parent)
   6 {
   7         last_selected = NULL;
   8         double header_w = ViewBTree::byte_to_pixels * sizeof (BTreeNodeHeader);
   9         this->num = num;
  10         this->padre = padre;
  11
  12         /* Fondo */
  13         fondo = new Canvas::Rect (*this, 0, 0, ViewBTree::node_width, ViewBTree::node_height);
  14         fondo->property_fill_color() = "gray";
  15         fondo->property_outline_color() = "black";
  16
  17         /* Header */
  18         Canvas::Rect *h = new Canvas::Rect (*this, 0, 0, header_w, ViewBTree::node_height);
  19         h->property_fill_color() = "blue";
  20         h->property_outline_color() = "black";
  21
  22         /* Numero de nodo */
  23         std::string node_num;
  24         std::stringstream ss;
  25         ss << num;
  26         ss >> node_num;
  27         new Canvas::Text (*this, header_w/2, ViewBTree::node_height/2, node_num);
  28
  29         double x = header_w;
  30
  31         std::list<BTreeData *>::iterator it = keys.begin ();
  32         while (it != keys.end ()) {
  33                 BTreeData *data = (*it);
  34                 double w = ViewBTree::byte_to_pixels * data->Size ();
  35
  36                 ViewBTreeData *v = ViewBTreeData::Create (data, this, x, 0, w+x, ViewBTree::node_height);
  37                 v->signal_clicked ().connect ( sigc::mem_fun (this , &ViewNode::on_item_clicked ));
  38                 v->signal_double_clicked ().connect ( sigc::mem_fun (this , &ViewNode::on_item_activated ));
  39                 x += w;
  40                 it++;
  41
  42                 if (!dynamic_cast<BTreeLeafData *>(data)) {
  43                         /* Si no es un dato de una hoja, tiene hijos */
  44                         hijos.push_back (data->getChild ());
  45                 }
  46         }
  47 }
  48
  49 void ViewNode::on_item_clicked (BTreeData *data, ViewBTreeData *s)
  50 {
  51         if (last_selected)
  52                 if (s != last_selected)
  53                         last_selected->SetSelected (false);
  54         last_selected = s;
  55         m_signal_selected (data, num, this);
  56 }
  57
  58 void ViewNode::on_item_activated (BTreeData *data, ViewBTreeData *s)
  59 {
  60         /* Solo activo los que tienen hijos */
  61         if (dynamic_cast<BTreeLeafData *> (data) == NULL)
  62                 m_signal_activated (data, num, this);
  63 }
  64
  65 ViewNode::type_signal_selected ViewNode::signal_selected ()
  66 {
  67         return m_signal_selected;
  68 }
  69
  70 ViewNode::type_signal_activated ViewNode::signal_activated ()
  71 {
  72         return m_signal_activated;
  73 }
  74
  75 void ViewNode::SetSelected (bool b)
  76 {
  77         if (last_selected) {
  78                 last_selected->SetSelected (b);
  79         }
  80 }
  81