X-Git-Url: https://git.llucax.com/z.facultad/75.52/treemulator.git/blobdiff_plain/b4a23678596cdf0fd5993ec6650422a86d2012be..8e23e15f255365a35ebcf3a5cec7a4c356fc78b5:/viewer/view_btree.cpp

diff --git a/viewer/view_btree.cpp b/viewer/view_btree.cpp
index 582b776..7604293 100644
--- a/viewer/view_btree.cpp
+++ b/viewer/view_btree.cpp
@@ -1,47 +1,129 @@
 
 #include "view_btree.h"
 #include "view_btree_data.h"
+#include <sigc++/slot.h>
 
-ViewBTree::ViewBTree (Canvas::Group *parent, std::string filename):Canvas::Group (*parent, 0, 0),
-	BTree (filename, 64)
+double ViewBTree::byte_to_pixels = 0;
+double ViewBTree::node_width = 0;
+double ViewBTree::node_height = 0;
+
+ViewBTree::ViewBTree (Canvas::Group *parent, std::string filename, uint block_size, int tree_type, int type):Canvas::Group (*parent, 0, 0),
+	BTree (filename, block_size, tree_type, type)
+{
+	/* Cada bytes lo hago de 5 units de ancho */
+	node_width = 4 * block_size;
+	node_height = 50;
+	byte_to_pixels  = node_width/block_size;
+
+	last_selected = NULL;
+	last_visited = 0;
+}
+
+ViewBTree::ViewBTree (Canvas::Group *parent, const std::string filename)
+	:Canvas::Group (*parent, 0, 0), BTree (filename)
 {
-	/* TODO : hace que el arbol se abra de un archivo ya creado o que se
-	 * cree afuera
-	 */
-	for (int i=0; i<=64; i++) {
-		ClaveFija c(i);
+	/* Cada bytes lo hago de 5 units de ancho */
+	node_width = 4 * header.block_size;
+	node_height = 50;
+	byte_to_pixels  = node_width/header.block_size;
 
-		AddKey (c);
+	last_selected = NULL;
+	last_visited = 0;
+}
+
+ViewBTree* ViewBTree::Open (Canvas::Group *parent, const std::string &filename)
+{
+	ViewBTree *tree = new ViewBTree (parent, filename);
+
+	if (tree->fp == NULL) {
+		delete tree;
+		return NULL;
 	}
 
-	/* Muestro la raiz */
-	uchar *node = ReadBlock (0);
+	/* El magic no coincide!! */
+	if (strcmp (tree->header.magic, "DILUMA")) {
+		delete tree;
+		return NULL;
+	}
+	return tree;
+}
+
+void ViewBTree::GoBack ()
+{
+	uint l = back.top ();
+	back.pop ();
+
+	Clear ();
+	AddNode (l, 1);
+}
+
+void ViewBTree::AddNode (uint num, uint padre)
+{
+	/* Hack de ultima hora :P */
+	if (padre == 0)
+		/* evito quedar en circulo :D */
+		back.push (last_visited);
+
+	last_visited = num;
+
+	uchar *node = ReadBlock (num);
+
 	BTreeNodeHeader node_h;
 	ReadNodoHeader (node, &node_h);
+
 	std::list<BTreeData *> keys = ReadKeys (node, node_h);
 
-	Canvas::Rect *rect = new Canvas::Rect (*this, 0, 0, NODE_WIDTH, NODE_HEIGHT);
-	rect->property_fill_color() = "gray";
+	ViewNode *vnode = new ViewNode (this, num, padre, node_h, keys);
+	vnode->property_y () = 10;
+	vnode->property_x () = 10;
 
-	int byte_to_pixels  = NODE_WIDTH/64; // TODO : 64 == BlockSize
+	vnode->signal_selected().connect ( sigc::mem_fun (*this, &ViewBTree::on_item_selected) );
+	vnode->signal_activated().connect ( sigc::mem_fun (*this, &ViewBTree::on_item_activated) );
 
-	/* Ahora pongo el lugar que opcupa el header */
-	double header_w = byte_to_pixels * sizeof (BTreeNodeHeader);
-	double x = 0;
+	last_selected = vnode;
+}
+
+void ViewBTree::on_item_activated (BTreeData *data, uint num, ViewNode *vnode)
+{
+	last_selected = NULL;
 
-	Canvas::Rect *view_header = new Canvas::Rect (*this, x, 0, x+header_w, NODE_HEIGHT);
-	x += header_w;
+	uint next = data->GetChild ();
+	delete vnode;
 
-	std::list<BTreeData *>::iterator it = keys.begin ();
-	while (it != keys.end ()) {
-		BTreeData *data = (*it);
-		double w = byte_to_pixels * data->Size ();
+	std::cout << next << std::endl;
+	AddNode (next, 0);
+}
 
-		ViewBTreeData::Create (data, this, x, 0, w+x, NODE_HEIGHT);
+void ViewBTree::on_item_selected (BTreeData *data, uint num, ViewNode *vnode)
+{
+	BTreeNodeHeader node_h;
+	uchar *node;
+	
+	node = ReadBlock (num);
+	ReadNodoHeader (node, &node_h);
+	delete [] node;
 
-		x += w;
-		it++;
-	}
+	if (last_selected)
+		if (vnode != last_selected)
+			last_selected->SetSelected (false);
+	last_selected = vnode;
 
+	m_signal_selected (data, node_h);
+}
+
+ViewBTree::type_signal_selected ViewBTree::signal_selected ()
+{
+	return m_signal_selected;
+}
+
+void ViewBTree::Clear ()
+{
+	if (last_selected)
+		delete last_selected;
+}
+
+void ViewBTree::HighliteKey (Clave &k)
+{
+	last_selected->HighliteKey (k);
 }