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                 tree = Glib::RefPtr<ViewBTree>(new ViewBTree (real_canvas->root(), "test.idx", d.getBlockSize (), type));
 122                 tree->signal_selected ().connect ( sigc::mem_fun (*real_frame, &ViewProperties::ShowItem) );
 123                 if (type == BTree::KEY_FIXED) {
 124                         std::list<int> lst;
 125                         std::list<int>::iterator it;
 126                         Random::Init ();
 127                         Random::Ints (lst, altas);
 128
 129                         it = lst.begin ();
 130                         uint i = 0;
 131                         while (it != lst.end ()) {
 132                                 ClaveFija c(*it);
 133
 134                                 double l = Random::Double (0.0f, 1.0f);
 135                                 std::cout << l << " >= " << paltas << std::endl;
 136                                 if (l >= paltas) {
 137                                         try {
 138                                                 tree->AddKey (c);
 139                                         } catch (Exception *e) {
 140                                                 std::cout << "====== " << (std::string)c << e->Message () << std::endl;
 141                                         }
 142                                         i++;
 143                                 } else {
 144                                         /* Tengo que borrar una clave entre 0 e "i" de la lista
 145                                          * porque son las que ya agregue. */
 146                                         int aborrar = (int)Random::Double (0, i);
 147                                         std::list<int>::iterator otro = lst.begin ();
 148                                         int j = 0;
 149                                         while (j < aborrar) {
 150                                                 otro++;
 151                                                 j++;
 152                                         }
 153                                         ClaveFija c(*otro);
 154
 155                                         tree->DelKey (c);
 156                                         std::string sss = c;
 157                                         std::cout << "Clave Borrada " << sss << std::endl;
 158                                 }
 159
 160                                 it++;
 161                         }
 162                 } else {
 163                         std::list<std::string> lst;
 164                         std::list<std::string>::iterator it;
 165                         Random::Init ();
 166                         Random::Strings (lst, altas);
 167
 168                         it = lst.begin ();
 169                         while (it != lst.end ()) {
 170                                 ClaveVariable c(*it);
 171
 172                                 try {
 173                                         tree->AddKey (c);
 174                                 } catch (Exception *e) {
 175                                         std::cout << "====== " << (std::string)c << e->Message () << std::endl;
 176                                 }
 177                                 it++;
 178                         }
 179                 }
 180                 tree->AddNode (0);
 181                 double x1, x2, y1, y2;
 182                 tree->get_bounds (x1, y1, x2, y2);
 183                 real_canvas->scroll_to (0, 0);
 184         }
 185 }
 186
 187 void agregar_clave ()
 188 {
 189         if (!tree)
 190         {
 191                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 192                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 193                 d.run();
 194                 return;
 195         }
 196         KeyDialog d("Agregar");
 197         if (d.run () == Gtk::RESPONSE_OK)
 198         {
 199                 Glib::ustring str_key = d.key();
 200                 if (tree->type() == BTree::KEY_FIXED)
 201                 {
 202                         ClaveFija c(atoi(str_key.c_str()));
 203                         tree->AddKey(c);
 204                 }
 205                 else
 206                 {
 207                         ClaveVariable c(str_key);
 208                         tree->AddKey(c);
 209                 }
 210                 delete tree->last_selected;
 211                 tree->AddNode (0);
 212                 real_canvas->scroll_to (0, 0);
 213         }
 214 }
 215
 216 void borrar_clave ()
 217 {
 218         if (!tree)
 219         {
 220                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 221                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 222                 d.run();
 223                 return;
 224         }
 225         KeyDialog d("Borrar");
 226         if (d.run () == Gtk::RESPONSE_OK)
 227         {
 228                 Glib::ustring str_key = d.key();
 229                 if (tree->type() == BTree::KEY_FIXED)
 230                 {
 231                         ClaveFija c(atoi(str_key.c_str()));
 232                         tree->DelKey(c);
 233                 }
 234                 else
 235                 {
 236                         ClaveVariable c(str_key);
 237                         tree->DelKey(c);
 238                 }
 239                 delete tree->last_selected;
 240                 tree->AddNode (0);
 241                 real_canvas->scroll_to (0, 0);
 242         }
 243 }
 244
 245 void buscar_clave ()
 246 {
 247         if (!tree)
 248         {
 249                 Gtk::MessageDialog d("No hay un arbol creado, por favor primero cree un arbol!",
 250                                 false, Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 251                 d.run();
 252                 return;
 253         }
 254         KeyDialog d("Buscar");
 255         while (true) // Repite hasta que se encuentre algo o se cancele
 256         {
 257                 if (d.run () == Gtk::RESPONSE_OK)
 258                 {
 259                         BTreeFindResult* result = 0;
 260                         Clave *c = NULL;
 261                         Glib::ustring str_key = d.key();
 262                         if (tree->type() == BTree::KEY_FIXED)
 263                         {
 264                                 c = new ClaveFija (atoi(str_key.c_str()));
 265                                 result = tree->FindKey(*c);
 266                         }
 267                         else
 268                         {
 269                                 c = new ClaveVariable (str_key);
 270                                 result = tree->FindKey(*c);
 271                         }
 272                         if (result)
 273                         {
 274                                 tree->Clear ();
 275                                 tree->AddNode(result->node);
 276                                 tree->HighliteKey (*c);
 277                                 delete result;
 278                                 delete c;
 279                                 real_canvas->scroll_to (0, 0);
 280                                 return; // Encontramos, salimos
 281                         }
 282                         if (c) delete c;
 283                         Gtk::MessageDialog msg("Clave no encontrada!", false,
 284                                         Gtk::MESSAGE_ERROR, Gtk::BUTTONS_OK, true);
 285                         msg.run();
 286                         // Seguimos intentando
 287                 }
 288                 else return; // Cancelaron, salimos
 289         }
 290 }
 291
 292 void zoom_out ()
 293 {
 294         double r = real_canvas->get_pixels_per_unit ();
 295         r *= 0.9f;
 296         if (r < 0.0001)
 297                 r = 0.0001;
 298         real_canvas->set_pixels_per_unit (r);
 299 }
 300
 301 void zoom_in ()
 302 {
 303         double r = real_canvas->get_pixels_per_unit ();
 304         r *= 1.1f;
 305         if (r > 10)
 306                 r = 10;
 307         real_canvas->set_pixels_per_unit (r);
 308 }
 309
 310 void zoom_normal ()
 311 {
 312         real_canvas->set_pixels_per_unit (1.0f);
 313 }
 314