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_DESC,
  26         CYL_SIZE,
  27         CYL_WORKP,
  28         CYL_STARTP,
  29         CYL_ENDP,
  30         CYL_O2,
  31         CYL_HE,
  32         CYL_COLUMNS
  33 };
  34
  35 static struct {
  36         int max_index;
  37         GtkListStore *model;
  38         GtkWidget *tree_view;
  39         GtkWidget *edit, *add, *del;
  40         GtkTreeViewColumn *desc, *size, *workp, *startp, *endp, *o2, *he;
  41 } cylinder_list;
  42
  43 struct cylinder_widget {
  44         int index, changed;
  45         const char *name;
  46         GtkWidget *hbox;
  47         GtkComboBox *description;
  48         GtkSpinButton *size, *pressure, *start, *end;
  49         GtkWidget *o2, *gasmix_button;
  50 };
  51
  52 static int convert_pressure(int mbar, double *p)
  53 {
  54         int decimals = 1;
  55         double pressure;
  56
  57         pressure = mbar / 1000.0;
  58         if (mbar) {
  59                 if (output_units.pressure == PSI) {
  60                         pressure *= 14.5037738; /* Bar to PSI */
  61                         decimals = 0;
  62                 }
  63         }
  64         *p = pressure;
  65         return decimals;
  66 }
  67
  68 static int convert_volume_pressure(int ml, int mbar, double *v, double *p)
  69 {
  70         int decimals = 1;
  71         double volume, pressure;
  72
  73         volume = ml / 1000.0;
  74         pressure = mbar / 1000.0;
  75         if (mbar) {
  76                 if (output_units.volume == CUFT) {
  77                         volume /= 28.3168466;   /* Liters to cuft */
  78                         volume *= pressure / 1.01325;
  79                 }
  80                 if (output_units.pressure == PSI) {
  81                         pressure *= 14.5037738; /* Bar to PSI */
  82                         decimals = 0;
  83                 }
  84         }
  85         *v = volume;
  86         *p = pressure;
  87         return decimals;
  88 }
  89
  90 static void set_cylinder_type_spinbuttons(struct cylinder_widget *cylinder, int ml, int mbar)
  91 {
  92         double volume, pressure;
  93
  94         convert_volume_pressure(ml, mbar, &volume, &pressure);
  95         gtk_spin_button_set_value(cylinder->size, volume);
  96         gtk_spin_button_set_value(cylinder->pressure, pressure);
  97 }
  98
  99 static void set_cylinder_pressure_spinbuttons(struct cylinder_widget *cylinder, int start, int end)
 100 {
 101         double pressure;
 102
 103         convert_pressure(start, &pressure);
 104         gtk_spin_button_set_value(cylinder->start, pressure);
 105         convert_pressure(end, &pressure);
 106         gtk_spin_button_set_value(cylinder->end, pressure);
 107 }
 108
 109 static void cylinder_cb(GtkComboBox *combo_box, gpointer data)
 110 {
 111         GtkTreeIter iter;
 112         GtkTreeModel *model = gtk_combo_box_get_model(combo_box);
 113         int ml, mbar;
 114         struct cylinder_widget *cylinder = data;
 115         cylinder_t *cyl = current_dive->cylinder + cylinder->index;
 116
 117         /* Did the user set it to some non-standard value? */
 118         if (!gtk_combo_box_get_active_iter(combo_box, &iter)) {
 119                 cylinder->changed = 1;
 120                 return;
 121         }
 122
 123         /*
 124          * We get "change" signal callbacks just because we set
 125          * the description by hand. Whatever. So ignore them if
 126          * they are no-ops.
 127          */
 128         if (!cylinder->changed && cyl->type.description) {
 129                 int same;
 130                 char *desc = gtk_combo_box_get_active_text(combo_box);
 131
 132                 same = !strcmp(desc, cyl->type.description);
 133                 g_free(desc);
 134                 if (same)
 135                         return;
 136         }
 137         cylinder->changed = 1;
 138
 139         gtk_tree_model_get(model, &iter,
 140                 CYL_SIZE, &ml,
 141                 CYL_WORKP, &mbar,
 142                 -1);
 143
 144         set_cylinder_type_spinbuttons(cylinder, ml, mbar);
 145 }
 146
 147 /*
 148  * The gtk_tree_model_foreach() interface is bad. It could have
 149  * returned whether the callback ever returned true
 150  */
 151 static int found_match = 0;
 152
 153 static gboolean match_cylinder(GtkTreeModel *model,
 154                                 GtkTreePath *path,
 155                                 GtkTreeIter *iter,
 156                                 gpointer data)
 157 {
 158         const char *name;
 159         struct cylinder_widget *cylinder = data;
 160         GValue value = {0, };
 161
 162         gtk_tree_model_get_value(model, iter, 0, &value);
 163         name = g_value_get_string(&value);
 164         if (strcmp(cylinder->name, name))
 165                 return FALSE;
 166         gtk_combo_box_set_active_iter(cylinder->description, iter);
 167         found_match = 1;
 168         return TRUE;
 169 }
 170
 171 static void add_cylinder(struct cylinder_widget *cylinder, const char *desc, int ml, int mbar)
 172 {
 173         GtkTreeModel *model;
 174
 175         found_match = 0;
 176         model = gtk_combo_box_get_model(cylinder->description);
 177         cylinder->name = desc;
 178         gtk_tree_model_foreach(model, match_cylinder, cylinder);
 179
 180         if (!found_match) {
 181                 GtkListStore *store = GTK_LIST_STORE(model);
 182                 GtkTreeIter iter;
 183
 184                 gtk_list_store_append(store, &iter);
 185                 gtk_list_store_set(store, &iter,
 186                         0, desc,
 187                         1, ml,
 188                         2, mbar,
 189                         -1);
 190                 gtk_combo_box_set_active_iter(cylinder->description, &iter);
 191         }
 192 }
 193
 194 static void show_cylinder(cylinder_t *cyl, struct cylinder_widget *cylinder)
 195 {
 196         const char *desc;
 197         int ml, mbar;
 198         double o2;
 199
 200         /* Don't show uninitialized cylinder widgets */
 201         if (!cylinder->description)
 202                 return;
 203
 204         desc = cyl->type.description;
 205         if (!desc)
 206                 desc = "";
 207         ml = cyl->type.size.mliter;
 208         mbar = cyl->type.workingpressure.mbar;
 209         add_cylinder(cylinder, desc, ml, mbar);
 210
 211         set_cylinder_type_spinbuttons(cylinder,
 212                 cyl->type.size.mliter, cyl->type.workingpressure.mbar);
 213         set_cylinder_pressure_spinbuttons(cylinder,
 214                 cyl->start.mbar, cyl->end.mbar);
 215         o2 = cyl->gasmix.o2.permille / 10.0;
 216         gtk_widget_set_sensitive(cylinder->o2, !!o2);
 217         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button), !!o2);
 218         if (!o2)
 219                 o2 = 21.0;
 220         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->o2), o2);
 221 }
 222
 223 static int cyl_nothing(cylinder_t *cyl)
 224 {
 225         return  !cyl->type.size.mliter &&
 226                 !cyl->type.workingpressure.mbar &&
 227                 !cyl->type.description &&
 228                 !cyl->gasmix.o2.permille &&
 229                 !cyl->gasmix.he.permille &&
 230                 !cyl->start.mbar &&
 231                 !cyl->end.mbar;
 232 }
 233
 234 static void set_one_cylinder(int index, cylinder_t *cyl, GtkListStore *model, GtkTreeIter *iter)
 235 {
 236         gtk_list_store_set(model, iter,
 237                 CYL_DESC, cyl->type.description ? : "",
 238                 CYL_SIZE, cyl->type.size.mliter,
 239                 CYL_WORKP, cyl->type.workingpressure.mbar,
 240                 CYL_STARTP, cyl->start.mbar,
 241                 CYL_ENDP, cyl->end.mbar,
 242                 CYL_O2, cyl->gasmix.o2.permille,
 243                 CYL_HE, cyl->gasmix.he.permille,
 244                 -1);
 245 }
 246
 247 void show_dive_equipment(struct dive *dive)
 248 {
 249         int i, max;
 250         GtkTreeIter iter;
 251         GtkListStore *model;
 252
 253         model = cylinder_list.model;
 254         gtk_list_store_clear(model);
 255         max = MAX_CYLINDERS;
 256         do {
 257                 cylinder_t *cyl = &dive->cylinder[max-1];
 258
 259                 if (!cyl_nothing(cyl))
 260                         break;
 261         } while (--max);
 262
 263         cylinder_list.max_index = max;
 264
 265         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 266         gtk_widget_set_sensitive(cylinder_list.del, 0);
 267         gtk_widget_set_sensitive(cylinder_list.add, max < MAX_CYLINDERS);
 268
 269         for (i = 0; i < max; i++) {
 270                 cylinder_t *cyl = dive->cylinder+i;
 271
 272                 gtk_list_store_append(model, &iter);
 273                 set_one_cylinder(i, cyl, model, &iter);
 274         }
 275 }
 276
 277 static GtkWidget *create_spinbutton(GtkWidget *vbox, const char *name, double min, double max, double incr)
 278 {
 279         GtkWidget *frame, *hbox, *button;
 280
 281         frame = gtk_frame_new(name);
 282         gtk_box_pack_start(GTK_BOX(vbox), frame, TRUE, FALSE, 0);
 283
 284         hbox = gtk_hbox_new(FALSE, 3);
 285         gtk_container_add(GTK_CONTAINER(frame), hbox);
 286
 287         button = gtk_spin_button_new_with_range(min, max, incr);
 288         gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, FALSE, 0);
 289
 290         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 291
 292         return button;
 293 }
 294
 295 static void fill_cylinder_info(struct cylinder_widget *cylinder, cylinder_t *cyl, const char *desc,
 296                 double volume, double pressure, double start, double end, int o2)
 297 {
 298         int mbar, ml;
 299
 300         if (output_units.pressure == PSI) {
 301                 pressure /= 14.5037738;
 302                 start /= 14.5037738;
 303                 end /= 14.5037738;
 304         }
 305
 306         if (pressure && output_units.volume == CUFT) {
 307                 volume *= 28.3168466;   /* CUFT to liter */
 308                 volume /= pressure / 1.01325;
 309         }
 310
 311         ml = volume * 1000 + 0.5;
 312         mbar = pressure * 1000 + 0.5;
 313
 314         if (o2 < 211)
 315                 o2 = 0;
 316         cyl->type.description = desc;
 317         cyl->type.size.mliter = ml;
 318         cyl->type.workingpressure.mbar = mbar;
 319         cyl->start.mbar = start * 1000 + 0.5;
 320         cyl->end.mbar = end * 1000 + 0.5;
 321         cyl->gasmix.o2.permille = o2;
 322
 323         /*
 324          * Also, insert it into the model if it doesn't already exist
 325          */
 326         add_cylinder(cylinder, desc, ml, mbar);
 327 }
 328
 329 static void record_cylinder_changes(cylinder_t *cyl, struct cylinder_widget *cylinder)
 330 {
 331         const gchar *desc;
 332         GtkComboBox *box;
 333         double volume, pressure, start, end;
 334         int o2;
 335
 336         /* Ignore uninitialized cylinder widgets */
 337         box = cylinder->description;
 338         if (!box)
 339                 return;
 340
 341         desc = gtk_combo_box_get_active_text(box);
 342         volume = gtk_spin_button_get_value(cylinder->size);
 343         pressure = gtk_spin_button_get_value(cylinder->pressure);
 344         start = gtk_spin_button_get_value(cylinder->start);
 345         end = gtk_spin_button_get_value(cylinder->end);
 346         o2 = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->o2))*10 + 0.5;
 347         if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button)))
 348                 o2 = 0;
 349         fill_cylinder_info(cylinder, cyl, desc, volume, pressure, start, end, o2);
 350 }
 351
 352 void flush_dive_equipment_changes(struct dive *dive)
 353 {
 354         /* We do nothing: we require the "Ok" button press */
 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(GtkWidget *vbox, struct cylinder_widget *cylinder, GtkListStore *model)
 438 {
 439         GtkWidget *frame, *hbox;
 440         GtkWidget *widget;
 441
 442         /*
 443          * Cylinder type: description, size and
 444          * working pressure
 445          */
 446         frame = gtk_frame_new("Cylinder");
 447
 448         hbox = gtk_hbox_new(FALSE, 3);
 449         gtk_container_add(GTK_CONTAINER(frame), hbox);
 450
 451         widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
 452         gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
 453
 454         cylinder->description = GTK_COMBO_BOX(widget);
 455         g_signal_connect(widget, "changed", G_CALLBACK(cylinder_cb), cylinder);
 456
 457         hbox = gtk_hbox_new(FALSE, 3);
 458         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 459         gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, TRUE, 0);
 460
 461         widget = create_spinbutton(hbox, "Size", 0, 300, 0.1);
 462         cylinder->size = GTK_SPIN_BUTTON(widget);
 463
 464         widget = create_spinbutton(hbox, "Pressure", 0, 5000, 1);
 465         cylinder->pressure = GTK_SPIN_BUTTON(widget);
 466
 467         /*
 468          * Cylinder start/end pressures
 469          */
 470         hbox = gtk_hbox_new(FALSE, 3);
 471         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 472
 473         widget = create_spinbutton(hbox, "Start Pressure", 0, 5000, 1);
 474         cylinder->start = GTK_SPIN_BUTTON(widget);
 475
 476         widget = create_spinbutton(hbox, "End Pressure", 0, 5000, 1);
 477         cylinder->end = GTK_SPIN_BUTTON(widget);
 478
 479         /*
 480          * Cylinder gas mix: Air, Nitrox or Trimix
 481          */
 482         hbox = gtk_hbox_new(FALSE, 3);
 483         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 484
 485         widget = create_spinbutton(hbox, "Nitrox", 21, 100, 0.1);
 486         cylinder->o2 = widget;
 487         cylinder->gasmix_button = gtk_check_button_new();
 488         gtk_box_pack_start(GTK_BOX(gtk_widget_get_parent(cylinder->o2)),
 489                 cylinder->gasmix_button, FALSE, FALSE, 3);
 490         g_signal_connect(cylinder->gasmix_button, "toggled", G_CALLBACK(nitrox_cb), cylinder);
 491
 492         gtk_spin_button_set_range(GTK_SPIN_BUTTON(cylinder->o2), 21.0, 100.0);
 493 }
 494
 495 static int edit_cylinder_dialog(int index, cylinder_t *cyl)
 496 {
 497         int success;
 498         GtkWidget *dialog, *vbox;
 499         struct cylinder_widget cylinder;
 500         struct dive *dive;
 501
 502         cylinder.index = index;
 503         cylinder.changed = 0;
 504
 505         dive = current_dive;
 506         if (!dive)
 507                 return 0;
 508         *cyl = dive->cylinder[index];
 509
 510         dialog = gtk_dialog_new_with_buttons("Cylinder",
 511                 GTK_WINDOW(main_window),
 512                 GTK_DIALOG_DESTROY_WITH_PARENT,
 513                 GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
 514                 GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
 515                 NULL);
 516
 517         vbox = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
 518         cylinder_widget(vbox, &cylinder, cylinder_model);
 519
 520         show_cylinder(cyl, &cylinder);
 521
 522         gtk_widget_show_all(dialog);
 523         success = gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT;
 524         if (success) {
 525                 record_cylinder_changes(cyl, &cylinder);
 526                 dive->cylinder[index] = *cyl;
 527                 mark_divelist_changed(TRUE);
 528                 flush_divelist(dive);
 529         }
 530
 531         gtk_widget_destroy(dialog);
 532
 533         return success;
 534 }
 535
 536 static int get_model_index(GtkListStore *model, GtkTreeIter *iter)
 537 {
 538         int *p, index;
 539         GtkTreePath *path;
 540
 541         path = gtk_tree_model_get_path(GTK_TREE_MODEL(model), iter);
 542         p = gtk_tree_path_get_indices(path);
 543         index = p ? *p : 0;
 544         gtk_tree_path_free(path);
 545         return index;
 546 }
 547
 548 static void edit_cb(GtkButton *button, gpointer data)
 549 {
 550         int index;
 551         GtkTreeIter iter;
 552         GtkListStore *model = cylinder_list.model;
 553         GtkTreeSelection *selection;
 554         cylinder_t cyl;
 555
 556         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 557
 558         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 559         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 560                 return;
 561
 562         index = get_model_index(model, &iter);
 563         if (!edit_cylinder_dialog(index, &cyl))
 564                 return;
 565
 566         set_one_cylinder(index, &cyl, model, &iter);
 567         repaint_dive();
 568 }
 569
 570 static void add_cb(GtkButton *button, gpointer data)
 571 {
 572         int index = cylinder_list.max_index;
 573         GtkTreeIter iter;
 574         GtkListStore *model = cylinder_list.model;
 575         GtkTreeSelection *selection;
 576         cylinder_t cyl;
 577
 578         if (!edit_cylinder_dialog(index, &cyl))
 579                 return;
 580
 581         gtk_list_store_append(model, &iter);
 582         set_one_cylinder(index, &cyl, model, &iter);
 583
 584         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 585         gtk_tree_selection_select_iter(selection, &iter);
 586
 587         cylinder_list.max_index++;
 588         gtk_widget_set_sensitive(cylinder_list.add, cylinder_list.max_index < MAX_CYLINDERS);
 589 }
 590
 591 static void del_cb(GtkButton *button, gpointer data)
 592 {
 593         int index, nr;
 594         GtkTreeIter iter;
 595         GtkListStore *model = cylinder_list.model;
 596         GtkTreeSelection *selection;
 597         struct dive *dive;
 598         cylinder_t *cyl;
 599
 600         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 601
 602         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 603         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 604                 return;
 605
 606         index = get_model_index(model, &iter);
 607
 608         dive = current_dive;
 609         if (!dive)
 610                 return;
 611         cyl = dive->cylinder + index;
 612         nr = cylinder_list.max_index - index - 1;
 613
 614         gtk_list_store_remove(model, &iter);
 615
 616         cylinder_list.max_index--;
 617         memmove(cyl, cyl+1, nr*sizeof(*cyl));
 618         memset(cyl+nr, 0, sizeof(*cyl));
 619
 620         mark_divelist_changed(TRUE);
 621         flush_divelist(dive);
 622
 623         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 624         gtk_widget_set_sensitive(cylinder_list.del, 0);
 625         gtk_widget_set_sensitive(cylinder_list.add, 1);
 626 }
 627
 628 static GtkListStore *create_tank_size_model(void)
 629 {
 630         GtkListStore *model;
 631
 632         model = gtk_list_store_new(3,
 633                 G_TYPE_STRING,          /* Tank name */
 634                 G_TYPE_INT,             /* Tank size in mliter */
 635                 G_TYPE_INT,             /* Tank working pressure in mbar */
 636                 -1);
 637
 638         fill_tank_list(model);
 639         return model;
 640 }
 641
 642 static void size_data_func(GtkTreeViewColumn *col,
 643                            GtkCellRenderer *renderer,
 644                            GtkTreeModel *model,
 645                            GtkTreeIter *iter,
 646                            gpointer data)
 647 {
 648         int ml, mbar;
 649         double size, pressure;
 650         char buffer[10];
 651
 652         gtk_tree_model_get(model, iter, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 653         convert_volume_pressure(ml, mbar, &size, &pressure);
 654         if (size)
 655                 snprintf(buffer, sizeof(buffer), "%.1f", size);
 656         else
 657                 strcpy(buffer, "unkn");
 658         g_object_set(renderer, "text", buffer, NULL);
 659 }
 660
 661 static void pressure_data_func(GtkTreeViewColumn *col,
 662                            GtkCellRenderer *renderer,
 663                            GtkTreeModel *model,
 664                            GtkTreeIter *iter,
 665                            gpointer data)
 666 {
 667         int index = (long)data;
 668         int mbar, decimals;
 669         double pressure;
 670         char buffer[10];
 671
 672         gtk_tree_model_get(model, iter, index, &mbar, -1);
 673         decimals = convert_pressure(mbar, &pressure);
 674         if (mbar)
 675                 snprintf(buffer, sizeof(buffer), "%.*f", decimals, pressure);
 676         else
 677                 *buffer = 0;
 678         g_object_set(renderer, "text", buffer, NULL);
 679 }
 680
 681 static void percentage_data_func(GtkTreeViewColumn *col,
 682                            GtkCellRenderer *renderer,
 683                            GtkTreeModel *model,
 684                            GtkTreeIter *iter,
 685                            gpointer data)
 686 {
 687         int index = (long)data;
 688         int permille;
 689         char buffer[10];
 690
 691         gtk_tree_model_get(model, iter, index, &permille, -1);
 692         if (permille)
 693                 snprintf(buffer, sizeof(buffer), "%.1f%%", permille / 10.0);
 694         else
 695                 *buffer = 0;
 696         g_object_set(renderer, "text", buffer, NULL);
 697 }
 698
 699 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
 700 {
 701         GtkTreeIter iter;
 702         int selected;
 703
 704         selected = gtk_tree_selection_get_selected(selection, NULL, &iter);
 705         gtk_widget_set_sensitive(cylinder_list.edit, selected);
 706         gtk_widget_set_sensitive(cylinder_list.del, selected);
 707 }
 708
 709 static void row_activated_cb(GtkTreeView *tree_view,
 710                         GtkTreePath *path,
 711                         GtkTreeViewColumn *column,
 712                         GtkTreeModel *model)
 713 {
 714         edit_cb(NULL, NULL);
 715 }
 716
 717 static GtkWidget *cylinder_list_create(void)
 718 {
 719         GtkWidget *tree_view;
 720         GtkTreeSelection *selection;
 721         GtkListStore *model;
 722
 723         model = gtk_list_store_new(CYL_COLUMNS,
 724                 G_TYPE_STRING,          /* CYL_DESC: utf8 */
 725                 G_TYPE_INT,             /* CYL_SIZE: mliter */
 726                 G_TYPE_INT,             /* CYL_WORKP: mbar */
 727                 G_TYPE_INT,             /* CYL_STARTP: mbar */
 728                 G_TYPE_INT,             /* CYL_ENDP: mbar */
 729                 G_TYPE_INT,             /* CYL_O2: permille */
 730                 G_TYPE_INT              /* CYL_HE: permille */
 731                 );
 732         cylinder_list.model = model;
 733         tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
 734         g_signal_connect(tree_view, "row-activated", G_CALLBACK(row_activated_cb), model);
 735
 736         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
 737         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
 738         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), model);
 739
 740         g_object_set(G_OBJECT(tree_view), "headers-visible", TRUE,
 741                                           "enable-grid-lines", GTK_TREE_VIEW_GRID_LINES_BOTH,
 742                                           NULL);
 743
 744         cylinder_list.desc = tree_view_column(tree_view, CYL_DESC, "Type", NULL, PANGO_ALIGN_LEFT, TRUE);
 745         cylinder_list.size = tree_view_column(tree_view, CYL_SIZE, "Size", size_data_func, PANGO_ALIGN_RIGHT, TRUE);
 746         cylinder_list.workp = tree_view_column(tree_view, CYL_WORKP, "MaxPress", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 747         cylinder_list.startp = tree_view_column(tree_view, CYL_STARTP, "Start", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 748         cylinder_list.endp = tree_view_column(tree_view, CYL_ENDP, "End", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 749         cylinder_list.o2 = tree_view_column(tree_view, CYL_O2, "O" UTF8_SUBSCRIPT_2 "%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 750         cylinder_list.he = tree_view_column(tree_view, CYL_HE, "He%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 751         return tree_view;
 752 }
 753
 754 GtkWidget *equipment_widget(void)
 755 {
 756         GtkWidget *vbox, *hbox, *frame, *framebox;
 757         GtkWidget *add, *del, *edit;
 758
 759         vbox = gtk_vbox_new(FALSE, 3);
 760
 761         /*
 762          * We create the cylinder size model at startup, since
 763          * we're going to share it across all cylinders and all
 764          * dives. So if you add a new cylinder type in one dive,
 765          * it will show up when you edit the cylinder types for
 766          * another dive.
 767          */
 768         cylinder_model = create_tank_size_model();
 769
 770         cylinder_list.tree_view = cylinder_list_create();
 771
 772         hbox = gtk_hbox_new(FALSE, 3);
 773         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 3);
 774
 775         frame = gtk_frame_new("Cylinders");
 776         gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 3);
 777
 778         framebox = gtk_vbox_new(FALSE, 3);
 779         gtk_container_add(GTK_CONTAINER(frame), framebox);
 780
 781         hbox = gtk_hbox_new(FALSE, 3);
 782         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 783
 784         gtk_box_pack_start(GTK_BOX(hbox), cylinder_list.tree_view, TRUE, FALSE, 3);
 785
 786         hbox = gtk_hbox_new(TRUE, 3);
 787         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 788
 789         edit = gtk_button_new_from_stock(GTK_STOCK_EDIT);
 790         add = gtk_button_new_from_stock(GTK_STOCK_ADD);
 791         del = gtk_button_new_from_stock(GTK_STOCK_DELETE);
 792         gtk_box_pack_start(GTK_BOX(hbox), edit, FALSE, FALSE, 0);
 793         gtk_box_pack_start(GTK_BOX(hbox), add, FALSE, FALSE, 0);
 794         gtk_box_pack_start(GTK_BOX(hbox), del, FALSE, FALSE, 0);
 795
 796         cylinder_list.edit = edit;
 797         cylinder_list.add = add;
 798         cylinder_list.del = del;
 799
 800         g_signal_connect(edit, "clicked", G_CALLBACK(edit_cb), NULL);
 801         g_signal_connect(add, "clicked", G_CALLBACK(add_cb), NULL);
 802         g_signal_connect(del, "clicked", G_CALLBACK(del_cb), NULL);
 803
 804         return vbox;
 805 }