Algo de Signals para pasar eventos.

[z.facultad/75.52/treemulator.git] / viewer / view_btree.cpp

diff --git a/viewer/view_btree.cpp b/viewer/view_btree.cpp
index f62e931a0f3d098f8fe880e1ce84ac6ccdd2d6b6..4fb08394351c2372693b743cc2667e424986f6ef 100644 (file)
--- a/viewer/view_btree.cpp
+++ b/viewer/view_btree.cpp
@@ -1,7 +1,8 @@
 
 #include "view_btree.h"
 #include "view_btree_data.h"
-               
+#include <sigc++/slot.h>
+
 double ViewBTree::byte_to_pixels = 0;
 
 ViewBTree::ViewBTree (Canvas::Group *parent, std::string filename):Canvas::Group (*parent, 0, 0),
@@ -23,6 +24,12 @@ ViewBTree::ViewBTree (Canvas::Group *parent, std::string filename):Canvas::Group
 
 void ViewBTree::AddNode (uint num)
 {
+       if (node_placed[num]) {
+               std::cout << "WARNING : Tratando de agregar de nuevo el nodo " << num << std::endl;
+               return;
+       }
+
+       node_placed[num] = true;
        /* Muestro la raiz */
        double y = 0;
        uchar *node = ReadBlock (num);
@@ -42,19 +49,44 @@ void ViewBTree::AddNode (uint num)
        vnode->property_y () = y;
        vnode->property_x () = pos_x[node_h.level];
        pos_x[node_h.level] += NODE_WIDTH+10;
+       vnode->signal_selected().connect ( sigc::mem_fun (*this, &ViewBTree::on_item_selected) );
 
        std::list<uint> childs = vnode->getChilds ();
        std::list<uint>::iterator hit = childs.begin ();
        while (hit != childs.end ()) {
+               if ((*hit) == 0) {
+                       std::cout << "WARNING : Referencia a 0 encontrada!!" << std::endl;
+                       hit = childs.end ();
+                       continue;
+               }
                AddNode (*hit);
                hit++;
        }
 }
 
+void ViewBTree::on_item_selected (BTreeData *data, uint num)
+{
+       BTreeNodeHeader node_h;
+       uchar *node;
+       
+       node = ReadBlock (num);
+       ReadNodoHeader (node, &node_h);
+       delete [] node;
+
+       std::cout << "Emit SignalSelected" << std::endl;
+       m_signal_selected (data, node_h);
+}
+
+ViewBTree::type_signal_selected ViewBTree::signal_selected ()
+{
+       return m_signal_selected;
+}
+
 ViewNode::ViewNode (Canvas::Group *parent, uint num, BTreeNodeHeader &header, std::list<BTreeData *> &keys)
        : Canvas::Group (*parent)
 {
        double header_w = ViewBTree::byte_to_pixels * sizeof (BTreeNodeHeader);
+       this->num = num;
 
        /* Fondo */
        Canvas::Rect *fondo = new Canvas::Rect (*this, 0, 0, NODE_WIDTH, NODE_HEIGHT);
@@ -81,7 +113,7 @@ ViewNode::ViewNode (Canvas::Group *parent, uint num, BTreeNodeHeader &header, st
                double w = ViewBTree::byte_to_pixels * data->Size ();
 
                ViewBTreeData *v = ViewBTreeData::Create (data, this, x, 0, w+x, NODE_HEIGHT);
-
+               v->signal_clicked ().connect ( sigc::mem_fun (this , &ViewNode::on_item_clicked ));
                x += w;
                it++;
 
@@ -92,3 +124,13 @@ ViewNode::ViewNode (Canvas::Group *parent, uint num, BTreeNodeHeader &header, st
        }
 }
 
+void ViewNode::on_item_clicked (BTreeData *data)
+{
+       m_signal_selected (data, num);
+}
+
+ViewNode::type_signal_selected ViewNode::signal_selected ()
+{
+       return m_signal_selected;
+}
+