X-Git-Url: https://git.llucax.com/z.facultad/75.52/treemulator.git/blobdiff_plain/3d105729f2a5cd73307e6431a17c21a2c37de459..354f66865d010a90b1d81c83bcaf55115e5859e1:/viewer/view_btree.cpp?ds=sidebyside

diff --git a/viewer/view_btree.cpp b/viewer/view_btree.cpp
index a73f396..7604293 100644
--- a/viewer/view_btree.cpp
+++ b/viewer/view_btree.cpp
@@ -1,83 +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)
+{
+	/* 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;
+
+	last_selected = NULL;
+	last_visited = 0;
+}
+
+ViewBTree* ViewBTree::Open (Canvas::Group *parent, const std::string &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);
+	ViewBTree *tree = new ViewBTree (parent, filename);
 
-		AddKey (c);
+	if (tree->fp == NULL) {
+		delete tree;
+		return NULL;
 	}
 
-	Canvas::Rect *rect = new Canvas::Rect (*this, 0, 0, NODE_WIDTH, NODE_HEIGHT);
-	rect->property_fill_color() = "gray";
+	/* El magic no coincide!! */
+	if (strcmp (tree->header.magic, "DILUMA")) {
+		delete tree;
+		return NULL;
+	}
+	return tree;
+}
 
-	byte_to_pixels  = NODE_WIDTH/64; // TODO : 64 == BlockSize
+void ViewBTree::GoBack ()
+{
+	uint l = back.top ();
+	back.pop ();
 
-	AddNode (0);
+	Clear ();
+	AddNode (l, 1);
 }
 
-void ViewBTree::AddNode (uint num)
+void ViewBTree::AddNode (uint num, uint padre)
 {
-	/* Muestro la raiz */
-	double y = 0;
+	/* 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);
 
-	if (num == 0) {
-		max_level = node_h.level;
-	} else {
-		y = (max_level - node_h.level)*(NODE_HEIGHT+10);
-	}
-
 	std::list<BTreeData *> keys = ReadKeys (node, node_h);
 
-	double header_w = byte_to_pixels * sizeof (BTreeNodeHeader);
-	double x = 0;
+	ViewNode *vnode = new ViewNode (this, num, padre, node_h, keys);
+	vnode->property_y () = 10;
+	vnode->property_x () = 10;
 
-	Canvas::Rect *view_header = new Canvas::Rect (*this, x, y, x+header_w, y+NODE_HEIGHT);
-	view_header->property_fill_color() = "blue";
+	vnode->signal_selected().connect ( sigc::mem_fun (*this, &ViewBTree::on_item_selected) );
+	vnode->signal_activated().connect ( sigc::mem_fun (*this, &ViewBTree::on_item_activated) );
 
-	/* Numero de nodo */
-	std::string node_num;
-	std::stringstream ss;
-	ss << num;
-	ss >> node_num;
-	new Canvas::Text (*this, header_w/2, y+NODE_HEIGHT/2, node_num);
+	last_selected = vnode;
+}
+
+void ViewBTree::on_item_activated (BTreeData *data, uint num, ViewNode *vnode)
+{
+	last_selected = NULL;
+
+	uint next = data->GetChild ();
+	delete vnode;
 
-	x += header_w;
+	std::cout << next << std::endl;
+	AddNode (next, 0);
+}
 
-	/* Cuento los hijos para saber como centrarlos más adelante */
-	std::list<uint> hijos;
+void ViewBTree::on_item_selected (BTreeData *data, uint num, ViewNode *vnode)
+{
+	BTreeNodeHeader node_h;
+	uchar *node;
 	
-	std::list<BTreeData *>::iterator it = keys.begin ();
-	while (it != keys.end ()) {
-		BTreeData *data = (*it);
-		double w = byte_to_pixels * data->Size ();
+	node = ReadBlock (num);
+	ReadNodoHeader (node, &node_h);
+	delete [] node;
 
-		ViewBTreeData *v = ViewBTreeData::Create (data, this, x, y, w+x, y+NODE_HEIGHT);
+	if (last_selected)
+		if (vnode != last_selected)
+			last_selected->SetSelected (false);
+	last_selected = vnode;
 
-		x += w;
-		it++;
+	m_signal_selected (data, node_h);
+}
 
-		if (dynamic_cast<BTreeChildData *>(data)) {
-			BTreeChildData *child = dynamic_cast<BTreeChildData *>(data);
-			hijos.push_back (child->getChild ());
-		}
-	}
+ViewBTree::type_signal_selected ViewBTree::signal_selected ()
+{
+	return m_signal_selected;
+}
 
+void ViewBTree::Clear ()
+{
+	if (last_selected)
+		delete last_selected;
+}
 
-	std::list<uint>::iterator hit = hijos.begin ();
-	while (hit != hijos.end ()) {
-		AddNode (*hit);
-		hit++;
-	}
+void ViewBTree::HighliteKey (Clave &k)
+{
+	last_selected->HighliteKey (k);
 }