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_start (frame, false, false, 10);
  72         frame.set_size_request (200, 200);
  73
  74         Glib::RefPtr<Gtk::ActionGroup> actiongroup = Gtk::ActionGroup::create();
  75
  76         actiongroup->add( Gtk::Action::create("MenuFile", "_Arbol") );
  77         actiongroup->add( Gtk::Action::create("Nuevo", Gtk::Stock::NEW), &nuevo_arbol);
  78         actiongroup->add( Gtk::Action::create("Salir", Gtk::Stock::QUIT), Gtk::AccelKey ("<control>q"), &Gtk::Main::quit);
  79         actiongroup->add( Gtk::Action::create("MenuKey", "_Clave") );
  80         actiongroup->add( Gtk::Action::create("Agregar Clave", Gtk::Stock::ADD), Gtk::AccelKey ("<control>a"), &agregar_clave);
  81         actiongroup->add( Gtk::Action::create("Borrar Clave", Gtk::Stock::REMOVE), Gtk::AccelKey ("<control>d"), &borrar_clave);
  82         actiongroup->add( Gtk::Action::create("Buscar Clave", Gtk::Stock::FIND), Gtk::AccelKey ("<control>f"), &buscar_clave);
  83         actiongroup->add( Gtk::Action::create("MenuZoom", "_Zoom"));
  84         actiongroup->add( Gtk::Action::create("Alejar", Gtk::Stock::ZOOM_OUT), Gtk::AccelKey ("<control>z"), &zoom_out );
  85         actiongroup->add( Gtk::Action::create("Acercar", Gtk::Stock::ZOOM_IN), Gtk::AccelKey ("<control>x"), &zoom_in);
  86         actiongroup->add( Gtk::Action::create("100 %", Gtk::Stock::ZOOM_100), Gtk::AccelKey ("<control>1"), &zoom_normal);
  87
  88         Glib::RefPtr<Gtk::UIManager> m_refUIManager = Gtk::UIManager::create();
  89         m_refUIManager->insert_action_group (actiongroup);
  90
  91         m_refUIManager->add_ui_from_string(ui_info);
  92         Gtk::Widget* menubar = m_refUIManager->get_widget("/MenuBar");
  93         menubar->show_all ();
  94
  95         vbox.pack_start (*menubar, false, true, 0);
  96         vbox.pack_end (hbox, true, true, 5);
  97
  98         window.add_accel_group (m_refUIManager->get_accel_group ());
  99         window.add (vbox);
 100         window.set_size_request (640, 480);
 101         window.show_all ();
 102
 103         /* Conecto el Canvas con el Frame */
 104         Gtk::Main::run(window);
 105
 106         return 0;
 107 }
 108
 109 void nuevo_arbol ()
 110 {
 111         real_canvas->set_scroll_region (0, 0, 5000, 5000);
 112
 113         NewTreeDialog d;
 114         if (d.run () == Gtk::RESPONSE_OK) {
 115                 uint altas = d.getAdds ();
 116                 uint bajas = d.getDels ();
 117
 118                 double paltas = bajas / (double)altas;
 119
 120                 int type = d.getKeyType ();
 121                 int atype = d.getTreeType ();
 122                 tree = Glib::RefPtr<ViewBTree>(new ViewBTree (real_canvas->root(), "test.idx", d.getBlockSize (), atype, type));
 123                 tree->signal_selected ().connect ( sigc::mem_fun (*real_frame, &ViewProperties::ShowItem) );
 124                 if (type == BTree::KEY_FIXED) {
 125                         std::list<int> lst;
 126                         std::list<int>::iterator it;
 127                         Random::Init ();
 128                         Random::Ints (lst, altas);
 129
 130                         it = lst.begin ();
 131                         uint i = 0;
 132                         while (it != lst.end ()) {
 133                                 ClaveFija c(*it, 0);
 134
 135                                 double l = Random::Double (0.0f, 1.0f);
 136                                 std::cout << l << " >= " << paltas << std::endl;
 137                                 if (l >= paltas) {
 138                                         try {
 139                                                 tree->AddKey (c);
 140                                         } catch (Exception *e) {
 141                                                 std::cout << "====== " << (std::string)c << e->Message () << std::endl;
 142                                         }
 143                                         i++;
 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, 0);
 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, 0);
 172
 173                                 try {
 174                                         tree->AddKey (c);
 175                                 } catch (Exception *e) {
 176                                         std::cout << "====== " << (std::string)c << e->Message () << std::endl;
 177                                 }
 178                                 it++;
 179                         }
 180                 }
 181                 tree->AddNode (0);
 182                 double x1, x2, y1, y2;
 183                 tree->get_bounds (x1, y1, x2, y2);
 184                 real_canvas->scroll_to (0, 0);
 185         }
 186 }
 187
 188 void agregar_clave ()
 189 {
 190         if (!tree)
 191         {
 192                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 193                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 194                 d.run();
 195                 return;
 196         }
 197         KeyDialog d("Agregar");
 198         if (d.run () == Gtk::RESPONSE_OK)
 199         {
 200                 Glib::ustring str_key = d.key();
 201                 if (tree->type() == BTree::KEY_FIXED)
 202                 {
 203                         ClaveFija c(atoi(str_key.c_str()), 0);
 204                         tree->AddKey(c);
 205                 }
 206                 else
 207                 {
 208                         ClaveVariable c(str_key, 0);
 209                         tree->AddKey(c);
 210                 }
 211                 delete tree->last_selected;
 212                 tree->AddNode (0);
 213                 real_canvas->scroll_to (0, 0);
 214         }
 215 }
 216
 217 void borrar_clave ()
 218 {
 219         if (!tree)
 220         {
 221                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 222                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 223                 d.run();
 224                 return;
 225         }
 226         KeyDialog d("Borrar");
 227         if (d.run () == Gtk::RESPONSE_OK)
 228         {
 229                 Glib::ustring str_key = d.key();
 230                 if (tree->type() == BTree::KEY_FIXED)
 231                 {
 232                         ClaveFija c(atoi(str_key.c_str()), 0);
 233                         tree->DelKey(c);
 234                 }
 235                 else
 236                 {
 237                         ClaveVariable c(str_key, 0);
 238                         tree->DelKey(c);
 239                 }
 240                 delete tree->last_selected;
 241                 tree->AddNode (0);
 242                 real_canvas->scroll_to (0, 0);
 243         }
 244 }
 245
 246 void buscar_clave ()
 247 {
 248         if (!tree)
 249         {
 250                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 251                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 252                 d.run();
 253                 return;
 254         }
 255         KeyDialog d("Buscar");
 256         while (true) // Repite hasta que se encuentre algo o se cancele
 257         {
 258                 if (d.run () == Gtk::RESPONSE_OK)
 259                 {
 260                         BTreeFindResult* result = 0;
 261                         Clave *c = NULL;
 262                         Glib::ustring str_key = d.key();
 263                         if (tree->type() == BTree::KEY_FIXED)
 264                         {
 265                                 c = new ClaveFija (atoi(str_key.c_str()), 0);
 266                                 result = tree->FindKey(*c);
 267                         }
 268                         else
 269                         {
 270                                 c = new ClaveVariable (str_key, 0);
 271                                 result = tree->FindKey(*c);
 272                         }
 273                         if (result)
 274                         {
 275                                 tree->Clear ();
 276                                 tree->AddNode(result->node);
 277                                 tree->HighliteKey (*c);
 278                                 delete result;
 279                                 delete c;
 280                                 real_canvas->scroll_to (0, 0);
 281                                 return; // Encontramos, salimos
 282                         }
 283                         if (c) delete c;
 284                         Gtk::MessageDialog msg("Clave no encontrada!", false,
 285                                         Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 286                         msg.run();
 287                         // Seguimos intentando
 288                 }
 289                 else return; // Cancelaron, salimos
 290         }
 291 }
 292
 293 void zoom_out ()
 294 {
 295         double r = real_canvas->get_pixels_per_unit ();
 296         r *= 0.9f;
 297         if (r < 0.0001)
 298                 r = 0.0001;
 299         real_canvas->set_pixels_per_unit (r);
 300 }
 301
 302 void zoom_in ()
 303 {
 304         double r = real_canvas->get_pixels_per_unit ();
 305         r *= 1.1f;
 306         if (r > 10)
 307                 r = 10;
 308         real_canvas->set_pixels_per_unit (r);
 309 }
 310
 311 void zoom_normal ()
 312 {
 313         real_canvas->set_pixels_per_unit (1.0f);
 314 }
 315