viewer/main.cpp

   1
   2 #include <iostream>
   3
   4 #include <gtkmm.h>
   5 #include <libgnomecanvasmm.h>
   6
   7 #include "random.h"
   8 #include "view_btree.h"
   9 #include "view_properties.h"
  10 #include "new_tree_dialog.h"
  11 #include "key_dialog.h"
  12 #include "view_debug.h"
  13
  14 using namespace Gnome::Canvas;
  15
  16  Glib::ustring ui_info =
  17 "<ui>"
  18 "  <menubar name='MenuBar'>"
  19 "    <menu action='MenuFile'>"
  20 "      <menuitem action='Nuevo'/>"
  21 "      <separator/>"
  22 "      <menuitem action='Salir'/>"
  23 "    </menu>"
  24 "    <menu action='MenuKey'>"
  25 "      <menuitem action='Agregar Clave'/>"
  26 "      <menuitem action='Borrar Clave'/>"
  27 "      <menuitem action='Buscar Clave'/>"
  28 "    </menu>"
  29 "    <menu action='MenuZoom'>"
  30 "      <menuitem action='Alejar'/>"
  31 "      <menuitem action='Acercar'/>"
  32 "      <separator/>"
  33 "      <menuitem action='100 %'/>"
  34 "    </menu>"
  35 "  </menubar>"
  36 "</ui>";
  37
  38 void nuevo_arbol ();
  39 void agregar_clave ();
  40 void borrar_clave ();
  41 void buscar_clave ();
  42 void zoom_out ();
  43 void zoom_in ();
  44 void zoom_normal ();
  45
  46 Glib::RefPtr<ViewBTree> tree;
  47 Gnome::Canvas::Canvas *real_canvas;
  48 ViewProperties *real_frame;
  49
  50 int main(int argc, char *argv[])
  51 {
  52         Gtk::Main kit(argc, argv);
  53
  54         Gnome::Canvas::init ();
  55
  56         Gtk::Window window;
  57         Gtk::VBox hbox;
  58         Gtk::VBox vbox;
  59
  60         Gtk::ScrolledWindow area;
  61         Gnome::Canvas::Canvas canvas;
  62         ViewProperties frame;
  63
  64         real_canvas = &canvas;
  65         real_frame = &frame;
  66
  67         canvas.set_scroll_region (0, 0, 100, 100);
  68         area.add (canvas);
  69
  70         hbox.pack_start (area);
  71         hbox.pack_end (frame, true, true, 10);
  72
  73         Glib::RefPtr<Gtk::ActionGroup> actiongroup = Gtk::ActionGroup::create();
  74
  75         actiongroup->add( Gtk::Action::create("MenuFile", "_Arbol") );
  76         actiongroup->add( Gtk::Action::create("Nuevo", Gtk::Stock::NEW), &nuevo_arbol);
  77         actiongroup->add( Gtk::Action::create("Salir", Gtk::Stock::QUIT), Gtk::AccelKey ("<control>q"), &Gtk::Main::quit);
  78         actiongroup->add( Gtk::Action::create("MenuKey", "_Clave") );
  79         actiongroup->add( Gtk::Action::create("Agregar Clave", Gtk::Stock::ADD), Gtk::AccelKey ("<control>a"), &agregar_clave);
  80         actiongroup->add( Gtk::Action::create("Borrar Clave", Gtk::Stock::REMOVE), Gtk::AccelKey ("<control>d"), &borrar_clave);
  81         actiongroup->add( Gtk::Action::create("Buscar Clave", Gtk::Stock::FIND), Gtk::AccelKey ("<control>f"), &buscar_clave);
  82         actiongroup->add( Gtk::Action::create("MenuZoom", "_Zoom"));
  83         actiongroup->add( Gtk::Action::create("Alejar", Gtk::Stock::ZOOM_OUT), Gtk::AccelKey ("<control>z"), &zoom_out );
  84         actiongroup->add( Gtk::Action::create("Acercar", Gtk::Stock::ZOOM_IN), Gtk::AccelKey ("<control>x"), &zoom_in);
  85         actiongroup->add( Gtk::Action::create("100 %", Gtk::Stock::ZOOM_100), Gtk::AccelKey ("<control>1"), &zoom_normal);
  86
  87         Glib::RefPtr<Gtk::UIManager> m_refUIManager = Gtk::UIManager::create();
  88         m_refUIManager->insert_action_group (actiongroup);
  89
  90         m_refUIManager->add_ui_from_string(ui_info);
  91         Gtk::Widget* menubar = m_refUIManager->get_widget("/MenuBar");
  92         menubar->show_all ();
  93
  94         vbox.pack_start (*menubar, false, true, 0);
  95         vbox.pack_end (hbox, true, true, 5);
  96
  97         window.add_accel_group (m_refUIManager->get_accel_group ());
  98         window.add (vbox);
  99         window.set_size_request (640, 480);
 100         window.show_all ();
 101
 102         /* Conecto el Canvas con el Frame */
 103         Gtk::Main::run(window);
 104
 105         return 0;
 106 }
 107
 108 void nuevo_arbol ()
 109 {
 110         real_canvas->set_scroll_region (0, 0, 5000, 5000);
 111
 112         NewTreeDialog d;
 113         if (d.run () == Gtk::RESPONSE_OK) {
 114                 uint altas = d.getAdds ();
 115                 uint bajas = d.getDels ();
 116
 117                 double paltas = bajas / (double)altas;
 118
 119                 int type = d.getKeyType ();
 120                 tree = Glib::RefPtr<ViewBTree>(new ViewBTree (real_canvas->root(), "test.idx", d.getBlockSize (), type));
 121                 tree->signal_selected ().connect ( sigc::mem_fun (*real_frame, &ViewProperties::ShowItem) );
 122                 if (type == BTree::KEY_FIXED) {
 123                         std::list<int> lst;
 124                         std::list<int>::iterator it;
 125                         Random::Init ();
 126                         Random::Ints (lst, altas);
 127
 128                         it = lst.begin ();
 129                         uint i = 0;
 130                         while (it != lst.end ()) {
 131                                 ClaveFija c(*it);
 132
 133                                 double l = Random::Double (0.0f, 1.0f);
 134                                 std::cout << l << " >= " << paltas << std::endl;
 135                                 if (l >= paltas) {
 136                                         tree->AddKey (c);
 137                                         i++;
 138                                 } else {
 139                                         /* Tengo que borrar una clave entre 0 e "i" de la lista
 140                                          * porque son las que ya agregue. */
 141                                         int aborrar = (int)Random::Double (0, i);
 142                                         std::list<int>::iterator otro = lst.begin ();
 143                                         int j = 0;
 144                                         while (j < aborrar) {
 145                                                 otro++;
 146                                                 j++;
 147                                         }
 148                                         ClaveFija c(*otro);
 149
 150                                         tree->DelKey (c);
 151                                         std::string sss = c;
 152                                         std::cout << "Clave Borrada " << sss << std::endl;
 153                                 }
 154
 155                                 it++;
 156                         }
 157                 } else {
 158                         std::list<std::string> lst;
 159                         std::list<std::string>::iterator it;
 160                         Random::Init ();
 161                         Random::Strings (lst, altas);
 162
 163                         it = lst.begin ();
 164                         while (it != lst.end ()) {
 165                                 ClaveVariable c(*it);
 166
 167                                 tree->AddKey (c);
 168                                 it++;
 169                         }
 170                 }
 171                 tree->AddNode (0);
 172                 double x1, x2, y1, y2;
 173                 tree->get_bounds (x1, y1, x2, y2);
 174                 real_canvas->scroll_to (0, 0);
 175         }
 176 }
 177
 178 void agregar_clave ()
 179 {
 180         if (!tree)
 181         {
 182                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 183                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 184                 d.run();
 185                 return;
 186         }
 187         KeyDialog d("Agregar");
 188         if (d.run () == Gtk::RESPONSE_OK)
 189         {
 190                 Glib::ustring str_key = d.key();
 191                 if (tree->type() == BTree::KEY_FIXED)
 192                 {
 193                         ClaveFija c(atoi(str_key.c_str()));
 194                         tree->AddKey(c);
 195                 }
 196                 else
 197                 {
 198                         ClaveVariable c(str_key);
 199                         tree->AddKey(c);
 200                 }
 201                 delete tree->last_selected;
 202                 tree->AddNode (0);
 203                 real_canvas->scroll_to (0, 0);
 204         }
 205 }
 206
 207 void borrar_clave ()
 208 {
 209         if (!tree)
 210         {
 211                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 212                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 213                 d.run();
 214                 return;
 215         }
 216         KeyDialog d("Borrar");
 217         if (d.run () == Gtk::RESPONSE_OK)
 218         {
 219                 Glib::ustring str_key = d.key();
 220                 if (tree->type() == BTree::KEY_FIXED)
 221                 {
 222                         ClaveFija c(atoi(str_key.c_str()));
 223                         tree->DelKey(c);
 224                 }
 225                 else
 226                 {
 227                         ClaveVariable c(str_key);
 228                         tree->DelKey(c);
 229                 }
 230                 delete tree->last_selected;
 231                 tree->AddNode (0);
 232                 real_canvas->scroll_to (0, 0);
 233         }
 234 }
 235
 236 void buscar_clave ()
 237 {
 238         if (!tree)
 239         {
 240                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 241                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 242                 d.run();
 243                 return;
 244         }
 245         KeyDialog d("Buscar");
 246         while (true) // Repite hasta que se encuentre algo o se cancele
 247         {
 248                 if (d.run () == Gtk::RESPONSE_OK)
 249                 {
 250                         BTreeFindResult* result = 0;
 251                         Clave *c = NULL;
 252                         Glib::ustring str_key = d.key();
 253                         if (tree->type() == BTree::KEY_FIXED)
 254                         {
 255                                 c = new ClaveFija (atoi(str_key.c_str()));
 256                                 result = tree->FindKey(*c);
 257                         }
 258                         else
 259                         {
 260                                 c = new ClaveVariable (str_key);
 261                                 result = tree->FindKey(*c);
 262                         }
 263                         if (result)
 264                         {
 265                                 tree->Clear ();
 266                                 tree->AddNode(result->node);
 267                                 tree->HighliteKey (*c);
 268                                 delete result;
 269                                 delete c;
 270                                 real_canvas->scroll_to (0, 0);
 271                                 return; // Encontramos, salimos
 272                         }
 273                         if (c) delete c;
 274                         Gtk::MessageDialog msg("Clave no encontrada!", false,
 275                                         Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 276                         msg.run();
 277                         // Seguimos intentando
 278                 }
 279                 else return; // Cancelaron, salimos
 280         }
 281 }
 282
 283 void zoom_out ()
 284 {
 285         double r = real_canvas->get_pixels_per_unit ();
 286         r *= 0.9f;
 287         if (r < 0.0001)
 288                 r = 0.0001;
 289         real_canvas->set_pixels_per_unit (r);
 290 }
 291
 292 void zoom_in ()
 293 {
 294         double r = real_canvas->get_pixels_per_unit ();
 295         r *= 1.1f;
 296         if (r > 10)
 297                 r = 10;
 298         real_canvas->set_pixels_per_unit (r);
 299 }
 300
 301 void zoom_normal ()
 302 {
 303         real_canvas->set_pixels_per_unit (1.0f);
 304 }
 305