equipment.c

   1 /* equipment.c */
   2 /* creates the UI for the equipment page -
   3  * controlled through the following interfaces:
   4  *
   5  * void show_dive_equipment(struct dive *dive)
   6  * void flush_dive_equipment_changes(struct dive *dive)
   7  *
   8  * called from gtk-ui:
   9  * GtkWidget *equipment_widget(void)
  10  */
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <stdlib.h>
  14 #include <stdarg.h>
  15 #include <time.h>
  16
  17 #include "dive.h"
  18 #include "display.h"
  19 #include "display-gtk.h"
  20 #include "divelist.h"
  21
  22 GtkListStore *cylinder_model;
  23
  24 enum {
  25         CYL_INDEX,
  26         CYL_DESC,
  27         CYL_SIZE,
  28         CYL_WORKP,
  29         CYL_STARTP,
  30         CYL_ENDP,
  31         CYL_O2,
  32         CYL_HE,
  33         CYL_COLUMNS
  34 };
  35
  36 static struct {
  37         int max_index;
  38         GtkListStore *model;
  39         GtkWidget *tree_view;
  40         GtkWidget *edit, *add, *del;
  41         GtkTreeViewColumn *desc, *size, *workp, *startp, *endp, *o2, *he;
  42 } cylinder_list;
  43
  44 struct cylinder_widget {
  45         int index, changed;
  46         const char *name;
  47         GtkWidget *hbox;
  48         GtkComboBox *description;
  49         GtkSpinButton *size, *pressure;
  50         GtkWidget *o2, *gasmix_button;
  51 };
  52
  53 static struct cylinder_widget gtk_cylinder[MAX_CYLINDERS];
  54
  55 static int convert_pressure(int mbar, double *p)
  56 {
  57         int decimals = 1;
  58         double pressure;
  59
  60         pressure = mbar / 1000.0;
  61         if (mbar) {
  62                 if (output_units.pressure == PSI) {
  63                         pressure *= 14.5037738; /* Bar to PSI */
  64                         decimals = 0;
  65                 }
  66         }
  67         *p = pressure;
  68         return decimals;
  69 }
  70
  71 static int convert_volume_pressure(int ml, int mbar, double *v, double *p)
  72 {
  73         int decimals = 1;
  74         double volume, pressure;
  75
  76         volume = ml / 1000.0;
  77         pressure = mbar / 1000.0;
  78         if (mbar) {
  79                 if (output_units.volume == CUFT) {
  80                         volume /= 28.3168466;   /* Liters to cuft */
  81                         volume *= pressure / 1.01325;
  82                 }
  83                 if (output_units.pressure == PSI) {
  84                         pressure *= 14.5037738; /* Bar to PSI */
  85                         decimals = 0;
  86                 }
  87         }
  88         *v = volume;
  89         *p = pressure;
  90         return decimals;
  91 }
  92
  93 static void set_cylinder_spinbuttons(struct cylinder_widget *cylinder, int ml, int mbar)
  94 {
  95         double volume, pressure;
  96
  97         convert_volume_pressure(ml, mbar, &volume, &pressure);
  98         gtk_spin_button_set_value(cylinder->size, volume);
  99         gtk_spin_button_set_value(cylinder->pressure, pressure);
 100 }
 101
 102 static void cylinder_cb(GtkComboBox *combo_box, gpointer data)
 103 {
 104         GtkTreeIter iter;
 105         GtkTreeModel *model = gtk_combo_box_get_model(combo_box);
 106         GValue value1 = {0, }, value2 = {0,};
 107         struct cylinder_widget *cylinder = data;
 108         cylinder_t *cyl = current_dive->cylinder + cylinder->index;
 109
 110         /* Did the user set it to some non-standard value? */
 111         if (!gtk_combo_box_get_active_iter(combo_box, &iter)) {
 112                 cylinder->changed = 1;
 113                 return;
 114         }
 115
 116         /*
 117          * We get "change" signal callbacks just because we set
 118          * the description by hand. Whatever. So ignore them if
 119          * they are no-ops.
 120          */
 121         if (!cylinder->changed && cyl->type.description) {
 122                 int same;
 123                 char *desc = gtk_combo_box_get_active_text(combo_box);
 124
 125                 same = !strcmp(desc, cyl->type.description);
 126                 g_free(desc);
 127                 if (same)
 128                         return;
 129         }
 130         cylinder->changed = 1;
 131
 132         gtk_tree_model_get_value(model, &iter, 1, &value1);
 133         gtk_tree_model_get_value(model, &iter, 2, &value2);
 134
 135         set_cylinder_spinbuttons(cylinder, g_value_get_int(&value1), g_value_get_int(&value2));
 136 }
 137
 138 /*
 139  * The gtk_tree_model_foreach() interface is bad. It could have
 140  * returned whether the callback ever returned true
 141  */
 142 static int found_match = 0;
 143
 144 static gboolean match_cylinder(GtkTreeModel *model,
 145                                 GtkTreePath *path,
 146                                 GtkTreeIter *iter,
 147                                 gpointer data)
 148 {
 149         const char *name;
 150         struct cylinder_widget *cylinder = data;
 151         GValue value = {0, };
 152
 153         gtk_tree_model_get_value(model, iter, 0, &value);
 154         name = g_value_get_string(&value);
 155         if (strcmp(cylinder->name, name))
 156                 return FALSE;
 157         gtk_combo_box_set_active_iter(cylinder->description, iter);
 158         found_match = 1;
 159         return TRUE;
 160 }
 161
 162 static void add_cylinder(struct cylinder_widget *cylinder, const char *desc, int ml, int mbar)
 163 {
 164         GtkTreeModel *model;
 165
 166         found_match = 0;
 167         model = gtk_combo_box_get_model(cylinder->description);
 168         cylinder->name = desc;
 169         gtk_tree_model_foreach(model, match_cylinder, cylinder);
 170
 171         if (!found_match) {
 172                 GtkListStore *store = GTK_LIST_STORE(model);
 173                 GtkTreeIter iter;
 174
 175                 gtk_list_store_append(store, &iter);
 176                 gtk_list_store_set(store, &iter,
 177                         0, desc,
 178                         1, ml,
 179                         2, mbar,
 180                         -1);
 181                 gtk_combo_box_set_active_iter(cylinder->description, &iter);
 182         }
 183 }
 184
 185 static void show_cylinder(cylinder_t *cyl, struct cylinder_widget *cylinder)
 186 {
 187         const char *desc;
 188         int ml, mbar;
 189         double o2;
 190
 191         /* Don't show uninitialized cylinder widgets */
 192         if (!cylinder->description)
 193                 return;
 194
 195         desc = cyl->type.description;
 196         if (!desc)
 197                 desc = "";
 198         ml = cyl->type.size.mliter;
 199         mbar = cyl->type.workingpressure.mbar;
 200         add_cylinder(cylinder, desc, ml, mbar);
 201
 202         set_cylinder_spinbuttons(cylinder, cyl->type.size.mliter, cyl->type.workingpressure.mbar);
 203         o2 = cyl->gasmix.o2.permille / 10.0;
 204         gtk_widget_set_sensitive(cylinder->o2, !!o2);
 205         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button), !!o2);
 206         if (!o2)
 207                 o2 = 21.0;
 208         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->o2), o2);
 209 }
 210
 211 static int cyl_nothing(cylinder_t *cyl)
 212 {
 213         return  !cyl->type.size.mliter &&
 214                 !cyl->type.workingpressure.mbar &&
 215                 !cyl->type.description &&
 216                 !cyl->gasmix.o2.permille &&
 217                 !cyl->gasmix.he.permille &&
 218                 !cyl->start.mbar &&
 219                 !cyl->end.mbar;
 220 }
 221
 222 void show_dive_equipment(struct dive *dive)
 223 {
 224         int i, max;
 225         GtkTreeIter iter;
 226         GtkListStore *model;
 227
 228         model = cylinder_list.model;
 229         gtk_list_store_clear(model);
 230         max = MAX_CYLINDERS;
 231         do {
 232                 cylinder_t *cyl = &dive->cylinder[max-1];
 233
 234                 if (!cyl_nothing(cyl))
 235                         break;
 236         } while (--max);
 237
 238         cylinder_list.max_index = max;
 239
 240         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 241         gtk_widget_set_sensitive(cylinder_list.del, 0);
 242         gtk_widget_set_sensitive(cylinder_list.add, max < MAX_CYLINDERS);
 243
 244         for (i = 0; i < max; i++) {
 245                 cylinder_t *cyl = dive->cylinder+i;
 246
 247                 gtk_list_store_append(model, &iter);
 248                 gtk_list_store_set(model, &iter,
 249                         CYL_INDEX, i,
 250                         CYL_DESC, cyl->type.description ? : "",
 251                         CYL_SIZE, cyl->type.size.mliter,
 252                         CYL_WORKP, cyl->type.workingpressure.mbar,
 253                         CYL_STARTP, cyl->start.mbar,
 254                         CYL_ENDP, cyl->end.mbar,
 255                         CYL_O2, cyl->gasmix.o2.permille,
 256                         CYL_HE, cyl->gasmix.he.permille,
 257                         -1);
 258         }
 259 }
 260
 261 static GtkWidget *create_spinbutton(GtkWidget *vbox, const char *name, double min, double max, double incr)
 262 {
 263         GtkWidget *frame, *hbox, *button;
 264
 265         frame = gtk_frame_new(name);
 266         gtk_box_pack_start(GTK_BOX(vbox), frame, FALSE, TRUE, 0);
 267
 268         hbox = gtk_hbox_new(FALSE, 3);
 269         gtk_container_add(GTK_CONTAINER(frame), hbox);
 270
 271         button = gtk_spin_button_new_with_range(min, max, incr);
 272         gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, TRUE, 0);
 273
 274         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 275
 276         return button;
 277 }
 278
 279 static void fill_cylinder_info(struct cylinder_widget *cylinder, cylinder_t *cyl, const char *desc, double volume, double pressure, int o2)
 280 {
 281         int mbar, ml;
 282
 283         if (output_units.pressure == PSI)
 284                 pressure /= 14.5037738;
 285
 286         if (pressure && output_units.volume == CUFT) {
 287                 volume *= 28.3168466;   /* CUFT to liter */
 288                 volume /= pressure / 1.01325;
 289         }
 290
 291         ml = volume * 1000 + 0.5;
 292         mbar = pressure * 1000 + 0.5;
 293
 294         if (o2 < 211)
 295                 o2 = 0;
 296         cyl->type.description = desc;
 297         cyl->type.size.mliter = ml;
 298         cyl->type.workingpressure.mbar = mbar;
 299         cyl->gasmix.o2.permille = o2;
 300
 301         /*
 302          * Also, insert it into the model if it doesn't already exist
 303          */
 304         add_cylinder(cylinder, desc, ml, mbar);
 305 }
 306
 307 static void record_cylinder_changes(cylinder_t *cyl, struct cylinder_widget *cylinder)
 308 {
 309         const gchar *desc;
 310         GtkComboBox *box;
 311         double volume, pressure;
 312         int o2;
 313
 314         /* Ignore uninitialized cylinder widgets */
 315         box = cylinder->description;
 316         if (!box)
 317                 return;
 318
 319         desc = gtk_combo_box_get_active_text(box);
 320         volume = gtk_spin_button_get_value(cylinder->size);
 321         pressure = gtk_spin_button_get_value(cylinder->pressure);
 322         o2 = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->o2))*10 + 0.5;
 323         if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button)))
 324                 o2 = 0;
 325         fill_cylinder_info(cylinder, cyl, desc, volume, pressure, o2);
 326 }
 327
 328 void flush_dive_equipment_changes(struct dive *dive)
 329 {
 330         /* We do nothing: we require the "Ok" button press */
 331 }
 332
 333 static void apply_cb(GtkButton *button, gpointer data)
 334 {
 335         int i;
 336         struct dive *dive = current_dive;
 337
 338         if (!dive)
 339                 return;
 340
 341         for (i = 0; i < MAX_CYLINDERS; i++)
 342                 record_cylinder_changes(dive->cylinder+i, gtk_cylinder+i);
 343         mark_divelist_changed(TRUE);
 344         flush_divelist(dive);
 345 }
 346
 347 static void cancel_cb(GtkButton *button, gpointer data)
 348 {
 349         struct dive *dive = current_dive;
 350
 351         if (!dive)
 352                 return;
 353
 354         show_dive_equipment(current_dive);
 355 }
 356
 357 /*
 358  * We hardcode the most common standard cylinders,
 359  * we should pick up any other names from the dive
 360  * logs directly.
 361  */
 362 static struct tank_info {
 363         const char *name;
 364         int size;       /* cuft if < 1000, otherwise mliter */
 365         int psi;        /* If zero, size is in mliter */
 366 } tank_info[100] = {
 367         /* Need an empty entry for the no-cylinder case */
 368         { "", 0, 0 },
 369
 370         /* Size-only metric cylinders */
 371         { "10.0 l", 10000 },
 372         { "11.1 l", 11100 },
 373
 374         /* Most common AL cylinders */
 375         { "AL50",   50, 3000 },
 376         { "AL63",   63, 3000 },
 377         { "AL72",   72, 3000 },
 378         { "AL80",   80, 3000 },
 379         { "AL100", 100, 3300 },
 380
 381         /* Somewhat common LP steel cylinders */
 382         { "LP85",   85, 2640 },
 383         { "LP95",   95, 2640 },
 384         { "LP108", 108, 2640 },
 385         { "LP121", 121, 2640 },
 386
 387         /* Somewhat common HP steel cylinders */
 388         { "HP65",   65, 3442 },
 389         { "HP80",   80, 3442 },
 390         { "HP100", 100, 3442 },
 391         { "HP119", 119, 3442 },
 392         { "HP130", 130, 3442 },
 393
 394         /* We'll fill in more from the dive log dynamically */
 395         { NULL, }
 396 };
 397
 398 static void fill_tank_list(GtkListStore *store)
 399 {
 400         GtkTreeIter iter;
 401         struct tank_info *info = tank_info;
 402
 403         while (info->name) {
 404                 int size = info->size;
 405                 int psi = info->psi;
 406                 int mbar = 0, ml = size;
 407
 408                 /* Is it in cuft and psi? */
 409                 if (psi) {
 410                         double bar = 0.0689475729 * psi;
 411                         double airvolume = 28316.8466 * size;
 412                         double atm = bar / 1.01325;
 413
 414                         ml = airvolume / atm + 0.5;
 415                         mbar = bar*1000 + 0.5;
 416                 }
 417
 418                 gtk_list_store_append(store, &iter);
 419                 gtk_list_store_set(store, &iter,
 420                         0, info->name,
 421                         1, ml,
 422                         2, mbar,
 423                         -1);
 424                 info++;
 425         }
 426 }
 427
 428 static void nitrox_cb(GtkToggleButton *button, gpointer data)
 429 {
 430         struct cylinder_widget *cylinder = data;
 431         int state;
 432
 433         state = gtk_toggle_button_get_active(button);
 434         gtk_widget_set_sensitive(cylinder->o2, state);
 435 }
 436
 437 static void cylinder_widget(int nr, GtkListStore *model)
 438 {
 439         struct cylinder_widget *cylinder;
 440         GtkWidget *frame, *hbox, *hbox2;
 441         GtkWidget *widget;
 442         char buffer[80];
 443
 444         cylinder = gtk_cylinder + nr;
 445         cylinder->index = nr;
 446
 447         hbox = gtk_hbox_new(FALSE, 3);
 448         cylinder->hbox = hbox;
 449
 450         snprintf(buffer, sizeof(buffer), "Cylinder %d", nr+1);
 451         frame = gtk_frame_new(buffer);
 452         gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, TRUE, 0);
 453
 454         hbox2 = gtk_hbox_new(FALSE, 3);
 455         gtk_container_add(GTK_CONTAINER(frame), hbox2);
 456
 457         widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
 458         gtk_box_pack_start(GTK_BOX(hbox2), widget, FALSE, TRUE, 0);
 459
 460         cylinder->description = GTK_COMBO_BOX(widget);
 461         g_signal_connect(widget, "changed", G_CALLBACK(cylinder_cb), cylinder);
 462
 463         widget = create_spinbutton(hbox, "Size", 0, 300, 0.1);
 464         cylinder->size = GTK_SPIN_BUTTON(widget);
 465
 466         widget = create_spinbutton(hbox, "Pressure", 0, 5000, 1);
 467         cylinder->pressure = GTK_SPIN_BUTTON(widget);
 468
 469         widget = create_spinbutton(hbox, "Nitrox", 21, 100, 0.1);
 470         cylinder->o2 = widget;
 471         cylinder->gasmix_button = gtk_check_button_new();
 472         gtk_box_pack_start(GTK_BOX(gtk_widget_get_parent(cylinder->o2)),
 473                 cylinder->gasmix_button, FALSE, FALSE, 3);
 474         g_signal_connect(cylinder->gasmix_button, "toggled", G_CALLBACK(nitrox_cb), cylinder);
 475
 476         gtk_spin_button_set_range(GTK_SPIN_BUTTON(cylinder->o2), 21.0, 100.0);
 477 }
 478
 479 static void edit_dive_dialog(int index, GtkListStore *model, GtkTreeIter *iter)
 480 {
 481 }
 482
 483 static void edit_cb(GtkButton *button, gpointer data)
 484 {
 485         int index;
 486         GtkTreeIter iter;
 487         GtkListStore *model = cylinder_list.model;
 488         GtkTreeSelection *selection;
 489
 490         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 491
 492         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 493         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 494                 return;
 495
 496         gtk_tree_model_get(GTK_TREE_MODEL(model), &iter, CYL_INDEX, &index, -1);
 497         edit_dive_dialog(index, model, &iter);
 498 }
 499
 500 static void add_cb(GtkButton *button, gpointer data)
 501 {
 502         int index = cylinder_list.max_index;
 503         GtkTreeIter iter;
 504         GtkListStore *model = cylinder_list.model;
 505
 506         gtk_list_store_append(model, &iter);
 507         edit_dive_dialog(index, model, &iter);
 508         cylinder_list.max_index++;
 509         gtk_widget_set_sensitive(cylinder_list.add, cylinder_list.max_index < MAX_CYLINDERS);
 510 }
 511
 512 static void del_cb(GtkButton *button, gpointer data)
 513 {
 514 }
 515
 516 static GtkListStore *create_tank_size_model(void)
 517 {
 518         GtkListStore *model;
 519
 520         model = gtk_list_store_new(3,
 521                 G_TYPE_STRING,          /* Tank name */
 522                 G_TYPE_INT,             /* Tank size in mliter */
 523                 G_TYPE_INT,             /* Tank working pressure in mbar */
 524                 -1);
 525
 526         fill_tank_list(model);
 527         return model;
 528 }
 529
 530 static void size_data_func(GtkTreeViewColumn *col,
 531                            GtkCellRenderer *renderer,
 532                            GtkTreeModel *model,
 533                            GtkTreeIter *iter,
 534                            gpointer data)
 535 {
 536         int ml, mbar;
 537         double size, pressure;
 538         char buffer[10];
 539
 540         gtk_tree_model_get(model, iter, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 541         convert_volume_pressure(ml, mbar, &size, &pressure);
 542         if (size)
 543                 snprintf(buffer, sizeof(buffer), "%.1f", size);
 544         else
 545                 strcpy(buffer, "unkn");
 546         g_object_set(renderer, "text", buffer, NULL);
 547 }
 548
 549 static void pressure_data_func(GtkTreeViewColumn *col,
 550                            GtkCellRenderer *renderer,
 551                            GtkTreeModel *model,
 552                            GtkTreeIter *iter,
 553                            gpointer data)
 554 {
 555         int index = (long)data;
 556         int mbar, decimals;
 557         double pressure;
 558         char buffer[10];
 559
 560         gtk_tree_model_get(model, iter, index, &mbar, -1);
 561         decimals = convert_pressure(mbar, &pressure);
 562         if (mbar)
 563                 snprintf(buffer, sizeof(buffer), "%.*f", decimals, pressure);
 564         else
 565                 *buffer = 0;
 566         g_object_set(renderer, "text", buffer, NULL);
 567 }
 568
 569 static void percentage_data_func(GtkTreeViewColumn *col,
 570                            GtkCellRenderer *renderer,
 571                            GtkTreeModel *model,
 572                            GtkTreeIter *iter,
 573                            gpointer data)
 574 {
 575         int index = (long)data;
 576         int permille;
 577         char buffer[10];
 578
 579         gtk_tree_model_get(model, iter, index, &permille, -1);
 580         if (permille)
 581                 snprintf(buffer, sizeof(buffer), "%.1f%%", permille / 10.0);
 582         else
 583                 *buffer = 0;
 584         g_object_set(renderer, "text", buffer, NULL);
 585 }
 586
 587 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
 588 {
 589         GtkTreeIter iter;
 590         int selected;
 591
 592         selected = gtk_tree_selection_get_selected(selection, NULL, &iter);
 593         gtk_widget_set_sensitive(cylinder_list.edit, selected);
 594         gtk_widget_set_sensitive(cylinder_list.del, selected);
 595 }
 596
 597 static GtkWidget *cylinder_list_create(void)
 598 {
 599         GtkWidget *tree_view;
 600         GtkTreeSelection *selection;
 601         GtkListStore *model;
 602
 603         model = gtk_list_store_new(CYL_COLUMNS,
 604                 G_TYPE_INT,             /* CYL_INDEX */
 605                 G_TYPE_STRING,          /* CYL_DESC: utf8 */
 606                 G_TYPE_INT,             /* CYL_SIZE: mliter */
 607                 G_TYPE_INT,             /* CYL_WORKP: mbar */
 608                 G_TYPE_INT,             /* CYL_STARTP: mbar */
 609                 G_TYPE_INT,             /* CYL_ENDP: mbar */
 610                 G_TYPE_INT,             /* CYL_O2: permille */
 611                 G_TYPE_INT              /* CYL_HE: permille */
 612                 );
 613         cylinder_list.model = model;
 614         tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
 615
 616         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
 617         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
 618         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), model);
 619
 620         cylinder_list.desc = tree_view_column(tree_view, CYL_DESC, "Type", NULL, PANGO_ALIGN_LEFT, TRUE);
 621         cylinder_list.size = tree_view_column(tree_view, CYL_SIZE, "Size", size_data_func, PANGO_ALIGN_RIGHT, TRUE);
 622         cylinder_list.workp = tree_view_column(tree_view, CYL_WORKP, "MaxPress", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 623         cylinder_list.startp = tree_view_column(tree_view, CYL_STARTP, "Start", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 624         cylinder_list.endp = tree_view_column(tree_view, CYL_ENDP, "End", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 625         cylinder_list.o2 = tree_view_column(tree_view, CYL_O2, "O" UTF8_SUBSCRIPT_2 "%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 626         cylinder_list.he = tree_view_column(tree_view, CYL_HE, "He%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 627         return tree_view;
 628 }
 629
 630 GtkWidget *equipment_widget(void)
 631 {
 632         GtkWidget *vbox, *hbox, *frame, *framebox;
 633         GtkWidget *add, *del, *edit;
 634
 635         vbox = gtk_vbox_new(FALSE, 3);
 636
 637         /*
 638          * We create the cylinder size model at startup, since
 639          * we're going to share it across all cylinders and all
 640          * dives. So if you add a new cylinder type in one dive,
 641          * it will show up when you edit the cylinder types for
 642          * another dive.
 643          */
 644         cylinder_model = create_tank_size_model();
 645
 646         cylinder_list.tree_view = cylinder_list_create();
 647
 648         hbox = gtk_hbox_new(FALSE, 3);
 649         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 3);
 650
 651         frame = gtk_frame_new("Cylinders");
 652         gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 3);
 653
 654         framebox = gtk_vbox_new(FALSE, 3);
 655         gtk_container_add(GTK_CONTAINER(frame), framebox);
 656
 657         hbox = gtk_hbox_new(FALSE, 3);
 658         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 659
 660         gtk_box_pack_start(GTK_BOX(hbox), cylinder_list.tree_view, TRUE, FALSE, 3);
 661
 662         hbox = gtk_hbox_new(TRUE, 3);
 663         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 664
 665         edit = gtk_button_new_from_stock(GTK_STOCK_EDIT);
 666         add = gtk_button_new_from_stock(GTK_STOCK_ADD);
 667         del = gtk_button_new_from_stock(GTK_STOCK_DELETE);
 668         gtk_box_pack_start(GTK_BOX(hbox), edit, FALSE, FALSE, 0);
 669         gtk_box_pack_start(GTK_BOX(hbox), add, FALSE, FALSE, 0);
 670         gtk_box_pack_start(GTK_BOX(hbox), del, FALSE, FALSE, 0);
 671
 672         cylinder_list.edit = edit;
 673         cylinder_list.add = add;
 674         cylinder_list.del = del;
 675
 676         g_signal_connect(edit, "clicked", G_CALLBACK(edit_cb), NULL);
 677         g_signal_connect(add, "clicked", G_CALLBACK(add_cb), NULL);
 678         g_signal_connect(del, "clicked", G_CALLBACK(del_cb), NULL);
 679
 680         return vbox;
 681 }