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                 datas.push_back (v);
  43
  44                 if (!dynamic_cast<BTreeLeafData *>(data)) {
  45                         /* Si no es un dato de una hoja, tiene hijos */
  46                         hijos.push_back (data->GetChild ());
  47                 }
  48         }
  49 }
  50
  51 void ViewNode::on_item_clicked (BTreeData *data, ViewBTreeData *s)
  52 {
  53         if (last_selected)
  54                 if (s != last_selected)
  55                         last_selected->SetSelected (false);
  56         last_selected = s;
  57         m_signal_selected (data, num, this);
  58 }
  59
  60 void ViewNode::on_item_activated (BTreeData *data, ViewBTreeData *s)
  61 {
  62         /* Solo activo los que tienen hijos */
  63         if (dynamic_cast<BTreeLeafData *> (data) == NULL)
  64                 m_signal_activated (data, num, this);
  65 }
  66
  67 ViewNode::type_signal_selected ViewNode::signal_selected ()
  68 {
  69         return m_signal_selected;
  70 }
  71
  72 ViewNode::type_signal_activated ViewNode::signal_activated ()
  73 {
  74         return m_signal_activated;
  75 }
  76
  77 void ViewNode::SetSelected (bool b)
  78 {
  79         if (last_selected) {
  80                 last_selected->SetSelected (b);
  81         }
  82 }
  83
  84 void ViewNode::HighliteKey (Clave &k)
  85 {
  86         std::list<ViewBTreeData *>::iterator it;
  87
  88         it = datas.begin ();
  89         while (it != datas.end ()) {
  90                 if ((*(*it)) == k) {
  91                         if (last_selected)
  92                                 last_selected->SetSelected (false);
  93                         last_selected = *it;
  94                         last_selected->SetSelected (true);
  95                 }
  96                 it++;
  97         }
  98 }
  99