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 ViewDebug *vdebug;
  48 Gnome::Canvas::Canvas *real_canvas;
  49 ViewProperties *real_frame;
  50
  51 int main(int argc, char *argv[])
  52 {
  53         Gtk::Main kit(argc, argv);
  54
  55         Gnome::Canvas::init ();
  56
  57         Gtk::Window window;
  58         Gtk::HBox hbox;
  59         Gtk::VBox vbox;
  60
  61         Gtk::ScrolledWindow area;
  62         Gnome::Canvas::Canvas canvas;
  63         ViewProperties frame;
  64         ViewDebug debug;
  65
  66         real_canvas = &canvas;
  67         real_frame = &frame;
  68         vdebug = &debug;
  69
  70         canvas.set_scroll_region (0, 0, 100, 100);
  71         area.add (canvas);
  72
  73         hbox.pack_start (frame, false, false, 10);
  74         hbox.pack_start (area);
  75         hbox.pack_end (debug, false, true, 10);
  76
  77         Glib::RefPtr<Gtk::ActionGroup> actiongroup = Gtk::ActionGroup::create();
  78
  79         actiongroup->add( Gtk::Action::create("MenuFile", "_Arbol") );
  80         actiongroup->add( Gtk::Action::create("Nuevo", Gtk::Stock::NEW), &nuevo_arbol);
  81         actiongroup->add( Gtk::Action::create("Salir", Gtk::Stock::QUIT), Gtk::AccelKey ("<control>q"), &Gtk::Main::quit);
  82         actiongroup->add( Gtk::Action::create("MenuKey", "_Clave") );
  83         actiongroup->add( Gtk::Action::create("Agregar Clave", Gtk::Stock::ADD), Gtk::AccelKey ("<control>a"), &agregar_clave);
  84         actiongroup->add( Gtk::Action::create("Borrar Clave", Gtk::Stock::REMOVE), Gtk::AccelKey ("<control>d"), &borrar_clave);
  85         actiongroup->add( Gtk::Action::create("Buscar Clave", Gtk::Stock::FIND), Gtk::AccelKey ("<control>f"), &buscar_clave);
  86         actiongroup->add( Gtk::Action::create("MenuZoom", "_Zoom"));
  87         actiongroup->add( Gtk::Action::create("Alejar", Gtk::Stock::ZOOM_OUT), Gtk::AccelKey ("<control>z"), &zoom_out );
  88         actiongroup->add( Gtk::Action::create("Acercar", Gtk::Stock::ZOOM_IN), Gtk::AccelKey ("<control>x"), &zoom_in);
  89         actiongroup->add( Gtk::Action::create("100 %", Gtk::Stock::ZOOM_100), Gtk::AccelKey ("<control>1"), &zoom_normal);
  90
  91         Glib::RefPtr<Gtk::UIManager> m_refUIManager = Gtk::UIManager::create();
  92         m_refUIManager->insert_action_group (actiongroup);
  93
  94         m_refUIManager->add_ui_from_string(ui_info);
  95         Gtk::Widget* menubar = m_refUIManager->get_widget("/MenuBar");
  96         menubar->show_all ();
  97
  98         vbox.pack_start (*menubar, false, true, 0);
  99         vbox.pack_end (hbox, true, true, 5);
 100
 101         window.add_accel_group (m_refUIManager->get_accel_group ());
 102         window.add (vbox);
 103         window.set_size_request (640, 480);
 104         window.show_all ();
 105
 106         /* Conecto el Canvas con el Frame */
 107         Gtk::Main::run(window);
 108
 109         return 0;
 110 }
 111
 112 void nuevo_arbol ()
 113 {
 114         real_canvas->set_scroll_region (0, 0, 5000, 5000);
 115
 116         NewTreeDialog d;
 117         if (d.run () == Gtk::RESPONSE_OK) {
 118                 uint altas = d.getAdds ();
 119                 uint bajas = d.getDels ();
 120
 121                 double paltas = bajas / (double)altas;
 122
 123                 int type = d.getKeyType ();
 124                 tree = Glib::RefPtr<ViewBTree>(new ViewBTree (real_canvas->root(), "test.idx", d.getBlockSize (), type));
 125                 tree->signal_selected ().connect ( sigc::mem_fun (*real_frame, &ViewProperties::ShowItem) );
 126                 vdebug->SetTree (tree);
 127                 if (type == BTree::KEY_FIXED) {
 128                         std::list<int> lst;
 129                         std::list<int>::iterator it;
 130                         Random::Init ();
 131                         Random::Ints (lst, altas);
 132
 133                         it = lst.begin ();
 134                         uint i = 0;
 135                         while (it != lst.end ()) {
 136                                 ClaveFija c(*it);
 137
 138                                 double l = Random::Double (0.0f, 1.0f);
 139                                 std::cout << l << " >= " << paltas << std::endl;
 140                                 if (l >= paltas) {
 141                                         tree->AddKey (c);
 142                                         i++;
 143                                         vdebug->AddKey (c);
 144                                 } else {
 145                                         /* Tengo que borrar una clave entre 0 e "i" de la lista
 146                                          * porque son las que ya agregue. */
 147                                         int aborrar = (int)Random::Double (0, i);
 148                                         std::list<int>::iterator otro = lst.begin ();
 149                                         int j = 0;
 150                                         while (j < aborrar) {
 151                                                 otro++;
 152                                                 j++;
 153                                         }
 154                                         ClaveFija c(*otro);
 155
 156                                         tree->DelKey (c);
 157                                         std::string sss = c;
 158                                         std::cout << "Clave Borrada " << sss << std::endl;
 159                                 }
 160
 161                                 it++;
 162                         }
 163                 } else {
 164                         std::list<std::string> lst;
 165                         std::list<std::string>::iterator it;
 166                         Random::Init ();
 167                         Random::Strings (lst, altas);
 168
 169                         it = lst.begin ();
 170                         while (it != lst.end ()) {
 171                                 ClaveVariable c(*it);
 172
 173                                 tree->AddKey (c);
 174                                 vdebug->AddKey (c);
 175                                 it++;
 176                         }
 177                 }
 178                 tree->AddNode (0);
 179                 double x1, x2, y1, y2;
 180                 tree->get_bounds (x1, y1, x2, y2);
 181         }
 182 }
 183
 184 void agregar_clave ()
 185 {
 186         if (!tree)
 187         {
 188                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 189                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 190                 d.run();
 191                 return;
 192         }
 193         KeyDialog d("Agregar");
 194         if (d.run () == Gtk::RESPONSE_OK)
 195         {
 196                 Glib::ustring str_key = d.key();
 197                 if (tree->type() == BTree::KEY_FIXED)
 198                 {
 199                         ClaveFija c(atoi(str_key.c_str()));
 200                         tree->AddKey(c);
 201                 }
 202                 else
 203                 {
 204                         ClaveVariable c(str_key);
 205                         tree->AddKey(c);
 206                 }
 207                 delete tree->last_selected;
 208                 tree->AddNode (0);
 209         }
 210 }
 211
 212 void borrar_clave ()
 213 {
 214         if (!tree)
 215         {
 216                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 217                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 218                 d.run();
 219                 return;
 220         }
 221         KeyDialog d("Borrar");
 222         if (d.run () == Gtk::RESPONSE_OK)
 223         {
 224                 Glib::ustring str_key = d.key();
 225                 if (tree->type() == BTree::KEY_FIXED)
 226                 {
 227                         ClaveFija c(atoi(str_key.c_str()));
 228                         tree->DelKey(c);
 229                 }
 230                 else
 231                 {
 232                         ClaveVariable c(str_key);
 233                         tree->DelKey(c);
 234                 }
 235                 delete tree->last_selected;
 236                 tree->AddNode (0);
 237         }
 238 }
 239
 240 void buscar_clave ()
 241 {
 242         if (!tree)
 243         {
 244                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 245                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 246                 d.run();
 247                 return;
 248         }
 249         KeyDialog d("Buscar");
 250         while (true) // Repite hasta que se encuentre algo o se cancele
 251         {
 252                 if (d.run () == Gtk::RESPONSE_OK)
 253                 {
 254                         BTreeFindResult* result = 0;
 255                         Clave *c = NULL;
 256                         Glib::ustring str_key = d.key();
 257                         if (tree->type() == BTree::KEY_FIXED)
 258                         {
 259                                 c = new ClaveFija (atoi(str_key.c_str()));
 260                                 result = tree->FindKey(*c);
 261                         }
 262                         else
 263                         {
 264                                 c = new ClaveVariable (str_key);
 265                                 result = tree->FindKey(*c);
 266                         }
 267                         if (result)
 268                         {
 269                                 tree->Clear ();
 270                                 tree->AddNode(result->node);
 271                                 tree->HighliteKey (*c);
 272                                 delete result;
 273                                 return; // Encontramos, salimos
 274                         }
 275                         if (c) delete c;
 276                         Gtk::MessageDialog msg("Clave no encontrada!", false,
 277                                         Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 278                         msg.run();
 279                         // Seguimos intentando
 280                 }
 281                 else return; // Cancelaron, salimos
 282         }
 283 }
 284
 285 void zoom_out ()
 286 {
 287         double r = real_canvas->get_pixels_per_unit ();
 288         r *= 0.9f;
 289         if (r < 0.0001)
 290                 r = 0.0001;
 291         real_canvas->set_pixels_per_unit (r);
 292 }
 293
 294 void zoom_in ()
 295 {
 296         double r = real_canvas->get_pixels_per_unit ();
 297         r *= 1.1f;
 298         if (r > 10)
 299                 r = 10;
 300         real_canvas->set_pixels_per_unit (r);
 301 }
 302
 303 void zoom_normal ()
 304 {
 305         real_canvas->set_pixels_per_unit (1.0f);
 306 }
 307