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 static 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;
  49         GtkWidget *start, *end, *pressure_button;
  50         GtkWidget *o2, *gasmix_button;
  51 };
  52
  53 /* we want bar - so let's not use our unit functions */
  54 static int convert_pressure(int mbar, double *p)
  55 {
  56         int decimals = 1;
  57         double pressure;
  58
  59         if (output_units.pressure == PSI) {
  60                 pressure = mbar_to_PSI(mbar);
  61                 decimals = 0;
  62         } else {
  63                 pressure = mbar / 1000.0;
  64         }
  65
  66         *p = pressure;
  67         return decimals;
  68 }
  69
  70 static int convert_volume_pressure(int ml, int mbar, double *v, double *p)
  71 {
  72         int decimals = 1;
  73         double volume, pressure;
  74
  75         volume = ml / 1000.0;
  76         if (mbar) {
  77                 if (output_units.volume == CUFT) {
  78                         volume = ml_to_cuft(ml);
  79                         volume *= bar_to_atm(mbar / 1000.0);
  80                 }
  81
  82                 if (output_units.pressure == PSI) {
  83                         pressure = mbar_to_PSI(mbar);
  84                         decimals = 0;
  85                 } else
  86                         pressure = mbar / 1000.0;
  87         }
  88         *v = volume;
  89         *p = pressure;
  90         return decimals;
  91 }
  92
  93 static void set_cylinder_type_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 set_cylinder_pressure_spinbuttons(struct cylinder_widget *cylinder, cylinder_t *cyl)
 103 {
 104         int set;
 105         unsigned int start, end;
 106         double pressure;
 107
 108         start = cyl->start.mbar;
 109         end = cyl->end.mbar;
 110         set = start || end;
 111         if (!set) {
 112                 start = cyl->sample_start.mbar;
 113                 end = cyl->sample_end.mbar;
 114         }
 115         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->pressure_button), set);
 116         gtk_widget_set_sensitive(cylinder->start, set);
 117         gtk_widget_set_sensitive(cylinder->end, set);
 118
 119         convert_pressure(start, &pressure);
 120         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->start), pressure);
 121         convert_pressure(end, &pressure);
 122         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->end), pressure);
 123 }
 124
 125 /*
 126  * The gtk_tree_model_foreach() interface is bad. It could have
 127  * returned whether the callback ever returned true
 128  */
 129 static GtkTreeIter *found_match = NULL;
 130 static GtkTreeIter match_iter;
 131
 132 static gboolean match_cylinder(GtkTreeModel *model,
 133                                 GtkTreePath *path,
 134                                 GtkTreeIter *iter,
 135                                 gpointer data)
 136 {
 137         int match;
 138         gchar *name;
 139         const char *desc = data;
 140
 141         gtk_tree_model_get(model, iter, 0, &name, -1);
 142         match = !strcmp(desc, name);
 143         g_free(name);
 144         if (match) {
 145                 match_iter = *iter;
 146                 found_match = &match_iter;
 147         }
 148         return match;
 149 }
 150
 151 static int get_active_cylinder(GtkComboBox *combo_box, GtkTreeIter *iter)
 152 {
 153         char *desc;
 154
 155         if (gtk_combo_box_get_active_iter(combo_box, iter))
 156                 return TRUE;
 157
 158         desc = gtk_combo_box_get_active_text(combo_box);
 159
 160         found_match = NULL;
 161         gtk_tree_model_foreach(GTK_TREE_MODEL(cylinder_model), match_cylinder, (void *)desc);
 162
 163         g_free(desc);
 164         if (!found_match)
 165                 return FALSE;
 166
 167         *iter = *found_match;
 168         gtk_combo_box_set_active_iter(combo_box, iter);
 169         return TRUE;
 170 }
 171
 172 static void cylinder_cb(GtkComboBox *combo_box, gpointer data)
 173 {
 174         GtkTreeIter iter;
 175         GtkTreeModel *model = gtk_combo_box_get_model(combo_box);
 176         int ml, mbar;
 177         struct cylinder_widget *cylinder = data;
 178         cylinder_t *cyl = current_dive->cylinder + cylinder->index;
 179
 180         /* Did the user set it to some non-standard value? */
 181         if (!get_active_cylinder(combo_box, &iter)) {
 182                 cylinder->changed = 1;
 183                 return;
 184         }
 185
 186         /*
 187          * We get "change" signal callbacks just because we set
 188          * the description by hand. Whatever. So ignore them if
 189          * they are no-ops.
 190          */
 191         if (!cylinder->changed && cyl->type.description) {
 192                 int same;
 193                 char *desc = gtk_combo_box_get_active_text(combo_box);
 194
 195                 same = !strcmp(desc, cyl->type.description);
 196                 g_free(desc);
 197                 if (same)
 198                         return;
 199         }
 200         cylinder->changed = 1;
 201
 202         gtk_tree_model_get(model, &iter,
 203                 CYL_SIZE, &ml,
 204                 CYL_WORKP, &mbar,
 205                 -1);
 206
 207         set_cylinder_type_spinbuttons(cylinder, ml, mbar);
 208 }
 209
 210 static GtkTreeIter *add_cylinder_type(const char *desc, int ml, int mbar, GtkTreeIter *iter)
 211 {
 212         GtkTreeModel *model;
 213
 214         /* Don't even bother adding stuff without a size */
 215         if (!ml)
 216                 return NULL;
 217
 218         found_match = NULL;
 219         model = GTK_TREE_MODEL(cylinder_model);
 220         gtk_tree_model_foreach(model, match_cylinder, (void *)desc);
 221
 222         if (!found_match) {
 223                 GtkListStore *store = GTK_LIST_STORE(model);
 224
 225                 gtk_list_store_append(store, iter);
 226                 gtk_list_store_set(store, iter,
 227                         0, desc,
 228                         1, ml,
 229                         2, mbar,
 230                         -1);
 231                 return iter;
 232         }
 233         return found_match;
 234 }
 235
 236 /*
 237  * When adding a dive, we'll add all the pre-existing cylinder
 238  * information from that dive to our cylinder model.
 239  */
 240 void add_cylinder_description(cylinder_type_t *type)
 241 {
 242         GtkTreeIter iter;
 243         const char *desc;
 244         unsigned int size, workp;
 245
 246         desc = type->description;
 247         if (!desc)
 248                 return;
 249         size = type->size.mliter;
 250         workp = type->workingpressure.mbar;
 251         add_cylinder_type(desc, size, workp, &iter);
 252 }
 253
 254 static void add_cylinder(struct cylinder_widget *cylinder, const char *desc, int ml, int mbar)
 255 {
 256         GtkTreeIter iter, *match;
 257
 258         cylinder->name = desc;
 259         match = add_cylinder_type(desc, ml, mbar, &iter);
 260         if (match)
 261                 gtk_combo_box_set_active_iter(cylinder->description, match);
 262 }
 263
 264 static void show_cylinder(cylinder_t *cyl, struct cylinder_widget *cylinder)
 265 {
 266         const char *desc;
 267         int ml, mbar;
 268         double o2;
 269
 270         /* Don't show uninitialized cylinder widgets */
 271         if (!cylinder->description)
 272                 return;
 273
 274         desc = cyl->type.description;
 275         if (!desc)
 276                 desc = "";
 277         ml = cyl->type.size.mliter;
 278         mbar = cyl->type.workingpressure.mbar;
 279         add_cylinder(cylinder, desc, ml, mbar);
 280
 281         set_cylinder_type_spinbuttons(cylinder,
 282                 cyl->type.size.mliter, cyl->type.workingpressure.mbar);
 283         set_cylinder_pressure_spinbuttons(cylinder, cyl);
 284         o2 = cyl->gasmix.o2.permille / 10.0;
 285         gtk_widget_set_sensitive(cylinder->o2, !!o2);
 286         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button), !!o2);
 287         if (!o2)
 288                 o2 = 21.0;
 289         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->o2), o2);
 290 }
 291
 292 static int cyl_nothing(cylinder_t *cyl)
 293 {
 294         return  !cyl->type.size.mliter &&
 295                 !cyl->type.workingpressure.mbar &&
 296                 !cyl->type.description &&
 297                 !cyl->gasmix.o2.permille &&
 298                 !cyl->gasmix.he.permille &&
 299                 !cyl->sample_start.mbar &&
 300                 !cyl->sample_end.mbar &&
 301                 !cyl->start.mbar &&
 302                 !cyl->end.mbar;
 303 }
 304
 305 static void set_one_cylinder(int index, cylinder_t *cyl, GtkListStore *model, GtkTreeIter *iter)
 306 {
 307         unsigned int start, end;
 308
 309         start = cyl->start.mbar ? : cyl->sample_start.mbar;
 310         end = cyl->end.mbar ? : cyl->sample_end.mbar;
 311         gtk_list_store_set(model, iter,
 312                 CYL_DESC, cyl->type.description ? : "",
 313                 CYL_SIZE, cyl->type.size.mliter,
 314                 CYL_WORKP, cyl->type.workingpressure.mbar,
 315                 CYL_STARTP, start,
 316                 CYL_ENDP, end,
 317                 CYL_O2, cyl->gasmix.o2.permille,
 318                 CYL_HE, cyl->gasmix.he.permille,
 319                 -1);
 320 }
 321
 322 void show_dive_equipment(struct dive *dive)
 323 {
 324         int i, max;
 325         GtkTreeIter iter;
 326         GtkListStore *model;
 327
 328         model = cylinder_list.model;
 329         gtk_list_store_clear(model);
 330         max = MAX_CYLINDERS;
 331         do {
 332                 cylinder_t *cyl = &dive->cylinder[max-1];
 333
 334                 if (!cyl_nothing(cyl))
 335                         break;
 336         } while (--max);
 337
 338         cylinder_list.max_index = max;
 339
 340         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 341         gtk_widget_set_sensitive(cylinder_list.del, 0);
 342         gtk_widget_set_sensitive(cylinder_list.add, max < MAX_CYLINDERS);
 343
 344         for (i = 0; i < max; i++) {
 345                 cylinder_t *cyl = dive->cylinder+i;
 346
 347                 gtk_list_store_append(model, &iter);
 348                 set_one_cylinder(i, cyl, model, &iter);
 349         }
 350 }
 351
 352 static GtkWidget *create_spinbutton(GtkWidget *vbox, const char *name, double min, double max, double incr)
 353 {
 354         GtkWidget *frame, *hbox, *button;
 355
 356         frame = gtk_frame_new(name);
 357         gtk_box_pack_start(GTK_BOX(vbox), frame, TRUE, FALSE, 0);
 358
 359         hbox = gtk_hbox_new(FALSE, 3);
 360         gtk_container_add(GTK_CONTAINER(frame), hbox);
 361
 362         button = gtk_spin_button_new_with_range(min, max, incr);
 363         gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, FALSE, 0);
 364
 365         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 366
 367         return button;
 368 }
 369
 370 static void fill_cylinder_info(struct cylinder_widget *cylinder, cylinder_t *cyl, const char *desc,
 371                 double volume, double pressure, double start, double end, int o2)
 372 {
 373         int mbar, ml;
 374
 375         if (output_units.pressure == PSI) {
 376                 pressure = psi_to_bar(pressure);
 377                 start = psi_to_bar(start);
 378                 end = psi_to_bar(end);
 379         }
 380
 381         if (pressure && output_units.volume == CUFT) {
 382                 volume = cuft_to_l(volume);
 383                 volume /= bar_to_atm(pressure);
 384         }
 385
 386         ml = volume * 1000 + 0.5;
 387         mbar = pressure * 1000 + 0.5;
 388
 389         if (o2 < 211)
 390                 o2 = 0;
 391         cyl->type.description = desc;
 392         cyl->type.size.mliter = ml;
 393         cyl->type.workingpressure.mbar = mbar;
 394         cyl->start.mbar = start * 1000 + 0.5;
 395         cyl->end.mbar = end * 1000 + 0.5;
 396         cyl->gasmix.o2.permille = o2;
 397
 398         /*
 399          * Also, insert it into the model if it doesn't already exist
 400          */
 401         add_cylinder(cylinder, desc, ml, mbar);
 402 }
 403
 404 static void record_cylinder_changes(cylinder_t *cyl, struct cylinder_widget *cylinder)
 405 {
 406         const gchar *desc;
 407         GtkComboBox *box;
 408         double volume, pressure, start, end;
 409         int o2;
 410
 411         /* Ignore uninitialized cylinder widgets */
 412         box = cylinder->description;
 413         if (!box)
 414                 return;
 415
 416         desc = gtk_combo_box_get_active_text(box);
 417         volume = gtk_spin_button_get_value(cylinder->size);
 418         pressure = gtk_spin_button_get_value(cylinder->pressure);
 419         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->pressure_button))) {
 420                 start = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->start));
 421                 end = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->end));
 422         } else {
 423                 start = end = 0;
 424         }
 425         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button)))
 426                 o2 = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->o2))*10 + 0.5;
 427         else
 428                 o2 = 0;
 429         fill_cylinder_info(cylinder, cyl, desc, volume, pressure, start, end, o2);
 430 }
 431
 432 void flush_dive_equipment_changes(struct dive *dive)
 433 {
 434         /* We do nothing: we require the "Ok" button press */
 435 }
 436
 437 /*
 438  * We hardcode the most common standard cylinders,
 439  * we should pick up any other names from the dive
 440  * logs directly.
 441  */
 442 static struct tank_info {
 443         const char *name;
 444         int size;       /* cuft if < 1000, otherwise mliter */
 445         int psi;        /* If zero, size is in mliter */
 446 } tank_info[100] = {
 447         /* Need an empty entry for the no-cylinder case */
 448         { "", 0, 0 },
 449
 450         /* Size-only metric cylinders */
 451         { "10.0 l", 10000 },
 452         { "11.1 l", 11100 },
 453
 454         /* Most common AL cylinders */
 455         { "AL50",   50, 3000 },
 456         { "AL63",   63, 3000 },
 457         { "AL72",   72, 3000 },
 458         { "AL80",   80, 3000 },
 459         { "AL100", 100, 3300 },
 460
 461         /* Somewhat common LP steel cylinders */
 462         { "LP85",   85, 2640 },
 463         { "LP95",   95, 2640 },
 464         { "LP108", 108, 2640 },
 465         { "LP121", 121, 2640 },
 466
 467         /* Somewhat common HP steel cylinders */
 468         { "HP65",   65, 3442 },
 469         { "HP80",   80, 3442 },
 470         { "HP100", 100, 3442 },
 471         { "HP119", 119, 3442 },
 472         { "HP130", 130, 3442 },
 473
 474         /* We'll fill in more from the dive log dynamically */
 475         { NULL, }
 476 };
 477
 478 static void fill_tank_list(GtkListStore *store)
 479 {
 480         GtkTreeIter iter;
 481         struct tank_info *info = tank_info;
 482
 483         while (info->name) {
 484                 int size = info->size;
 485                 int psi = info->psi;
 486                 int mbar = 0, ml = size;
 487
 488                 /* Is it in cuft and psi? */
 489                 if (psi) {
 490                         double bar = psi_to_bar(psi);
 491                         double airvolume = cuft_to_l(size) * 1000.0;
 492                         double atm = bar_to_atm(bar);
 493
 494                         ml = airvolume / atm + 0.5;
 495                         mbar = bar*1000 + 0.5;
 496                 }
 497
 498                 gtk_list_store_append(store, &iter);
 499                 gtk_list_store_set(store, &iter,
 500                         0, info->name,
 501                         1, ml,
 502                         2, mbar,
 503                         -1);
 504                 info++;
 505         }
 506 }
 507
 508 static void nitrox_cb(GtkToggleButton *button, gpointer data)
 509 {
 510         struct cylinder_widget *cylinder = data;
 511         int state;
 512
 513         state = gtk_toggle_button_get_active(button);
 514         gtk_widget_set_sensitive(cylinder->o2, state);
 515 }
 516
 517 static void pressure_cb(GtkToggleButton *button, gpointer data)
 518 {
 519         struct cylinder_widget *cylinder = data;
 520         int state;
 521
 522         state = gtk_toggle_button_get_active(button);
 523         gtk_widget_set_sensitive(cylinder->start, state);
 524         gtk_widget_set_sensitive(cylinder->end, state);
 525 }
 526
 527 static gboolean completion_cb(GtkEntryCompletion *widget, GtkTreeModel *model, GtkTreeIter *iter, struct cylinder_widget *cylinder)
 528 {
 529         const char *desc;
 530         unsigned int ml, mbar;
 531
 532         gtk_tree_model_get(model, iter, CYL_DESC, &desc, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 533         add_cylinder(cylinder, desc, ml, mbar);
 534         return TRUE;
 535 }
 536
 537 static void cylinder_activate_cb(GtkComboBox *combo_box, gpointer data)
 538 {
 539         struct cylinder_widget *cylinder = data;
 540         cylinder_cb(cylinder->description, data);
 541 }
 542
 543 static void cylinder_widget(GtkWidget *vbox, struct cylinder_widget *cylinder, GtkListStore *model)
 544 {
 545         GtkWidget *frame, *hbox;
 546         GtkEntry *entry;
 547         GtkEntryCompletion *completion;
 548         GtkWidget *widget;
 549
 550         /*
 551          * Cylinder type: description, size and
 552          * working pressure
 553          */
 554         frame = gtk_frame_new("Cylinder");
 555
 556         hbox = gtk_hbox_new(FALSE, 3);
 557         gtk_container_add(GTK_CONTAINER(frame), hbox);
 558
 559         widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
 560         gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
 561
 562         cylinder->description = GTK_COMBO_BOX(widget);
 563         g_signal_connect(widget, "changed", G_CALLBACK(cylinder_cb), cylinder);
 564
 565         entry = GTK_ENTRY(GTK_BIN(widget)->child);
 566         g_signal_connect(entry, "activate", G_CALLBACK(cylinder_activate_cb), cylinder);
 567
 568         completion = gtk_entry_completion_new();
 569         gtk_entry_completion_set_text_column(completion, 0);
 570         gtk_entry_completion_set_model(completion, GTK_TREE_MODEL(model));
 571         g_signal_connect(completion, "match-selected", G_CALLBACK(completion_cb), cylinder);
 572         gtk_entry_set_completion(entry, completion);
 573
 574         hbox = gtk_hbox_new(FALSE, 3);
 575         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 576         gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, TRUE, 0);
 577
 578         widget = create_spinbutton(hbox, "Size", 0, 300, 0.1);
 579         cylinder->size = GTK_SPIN_BUTTON(widget);
 580
 581         widget = create_spinbutton(hbox, "Pressure", 0, 5000, 1);
 582         cylinder->pressure = GTK_SPIN_BUTTON(widget);
 583
 584         /*
 585          * Cylinder start/end pressures
 586          */
 587         hbox = gtk_hbox_new(FALSE, 3);
 588         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 589
 590         cylinder->pressure_button = gtk_check_button_new();
 591         gtk_box_pack_start(GTK_BOX(hbox), cylinder->pressure_button, FALSE, FALSE, 3);
 592         g_signal_connect(cylinder->pressure_button, "toggled", G_CALLBACK(pressure_cb), cylinder);
 593
 594         widget = create_spinbutton(hbox, "Start Pressure", 0, 5000, 1);
 595         cylinder->start = widget;
 596
 597         widget = create_spinbutton(hbox, "End Pressure", 0, 5000, 1);
 598         cylinder->end = widget;
 599
 600         /*
 601          * Cylinder gas mix: Air, Nitrox or Trimix
 602          */
 603         hbox = gtk_hbox_new(FALSE, 3);
 604         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 605
 606         widget = create_spinbutton(hbox, "Nitrox", 21, 100, 0.1);
 607         cylinder->o2 = widget;
 608         cylinder->gasmix_button = gtk_check_button_new();
 609         gtk_box_pack_start(GTK_BOX(gtk_widget_get_parent(cylinder->o2)),
 610                 cylinder->gasmix_button, FALSE, FALSE, 3);
 611         g_signal_connect(cylinder->gasmix_button, "toggled", G_CALLBACK(nitrox_cb), cylinder);
 612
 613         gtk_spin_button_set_range(GTK_SPIN_BUTTON(cylinder->o2), 21.0, 100.0);
 614 }
 615
 616 static int edit_cylinder_dialog(int index, cylinder_t *cyl)
 617 {
 618         int success;
 619         GtkWidget *dialog, *vbox;
 620         struct cylinder_widget cylinder;
 621         struct dive *dive;
 622
 623         cylinder.index = index;
 624         cylinder.changed = 0;
 625
 626         dive = current_dive;
 627         if (!dive)
 628                 return 0;
 629         *cyl = dive->cylinder[index];
 630
 631         dialog = gtk_dialog_new_with_buttons("Cylinder",
 632                 GTK_WINDOW(main_window),
 633                 GTK_DIALOG_DESTROY_WITH_PARENT,
 634                 GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
 635                 GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
 636                 NULL);
 637
 638         vbox = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
 639         cylinder_widget(vbox, &cylinder, cylinder_model);
 640
 641         show_cylinder(cyl, &cylinder);
 642
 643         gtk_widget_show_all(dialog);
 644         success = gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT;
 645         if (success) {
 646                 record_cylinder_changes(cyl, &cylinder);
 647                 dive->cylinder[index] = *cyl;
 648                 mark_divelist_changed(TRUE);
 649                 update_cylinder_related_info(dive);
 650                 flush_divelist(dive);
 651         }
 652
 653         gtk_widget_destroy(dialog);
 654
 655         return success;
 656 }
 657
 658 static int get_model_index(GtkListStore *model, GtkTreeIter *iter)
 659 {
 660         int *p, index;
 661         GtkTreePath *path;
 662
 663         path = gtk_tree_model_get_path(GTK_TREE_MODEL(model), iter);
 664         p = gtk_tree_path_get_indices(path);
 665         index = p ? *p : 0;
 666         gtk_tree_path_free(path);
 667         return index;
 668 }
 669
 670 static void edit_cb(GtkButton *button, gpointer data)
 671 {
 672         int index;
 673         GtkTreeIter iter;
 674         GtkListStore *model = cylinder_list.model;
 675         GtkTreeSelection *selection;
 676         cylinder_t cyl;
 677
 678         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 679
 680         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 681         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 682                 return;
 683
 684         index = get_model_index(model, &iter);
 685         if (!edit_cylinder_dialog(index, &cyl))
 686                 return;
 687
 688         set_one_cylinder(index, &cyl, model, &iter);
 689         repaint_dive();
 690 }
 691
 692 static void add_cb(GtkButton *button, gpointer data)
 693 {
 694         int index = cylinder_list.max_index;
 695         GtkTreeIter iter;
 696         GtkListStore *model = cylinder_list.model;
 697         GtkTreeSelection *selection;
 698         cylinder_t cyl;
 699
 700         if (!edit_cylinder_dialog(index, &cyl))
 701                 return;
 702
 703         gtk_list_store_append(model, &iter);
 704         set_one_cylinder(index, &cyl, model, &iter);
 705
 706         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 707         gtk_tree_selection_select_iter(selection, &iter);
 708
 709         cylinder_list.max_index++;
 710         gtk_widget_set_sensitive(cylinder_list.add, cylinder_list.max_index < MAX_CYLINDERS);
 711 }
 712
 713 static void del_cb(GtkButton *button, gpointer data)
 714 {
 715         int index, nr;
 716         GtkTreeIter iter;
 717         GtkListStore *model = cylinder_list.model;
 718         GtkTreeSelection *selection;
 719         struct dive *dive;
 720         cylinder_t *cyl;
 721
 722         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 723
 724         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 725         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 726                 return;
 727
 728         index = get_model_index(model, &iter);
 729
 730         dive = current_dive;
 731         if (!dive)
 732                 return;
 733         cyl = dive->cylinder + index;
 734         nr = cylinder_list.max_index - index - 1;
 735
 736         gtk_list_store_remove(model, &iter);
 737
 738         cylinder_list.max_index--;
 739         memmove(cyl, cyl+1, nr*sizeof(*cyl));
 740         memset(cyl+nr, 0, sizeof(*cyl));
 741
 742         mark_divelist_changed(TRUE);
 743         flush_divelist(dive);
 744
 745         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 746         gtk_widget_set_sensitive(cylinder_list.del, 0);
 747         gtk_widget_set_sensitive(cylinder_list.add, 1);
 748 }
 749
 750 static GtkListStore *create_tank_size_model(void)
 751 {
 752         GtkListStore *model;
 753
 754         model = gtk_list_store_new(3,
 755                 G_TYPE_STRING,          /* Tank name */
 756                 G_TYPE_INT,             /* Tank size in mliter */
 757                 G_TYPE_INT,             /* Tank working pressure in mbar */
 758                 -1);
 759
 760         fill_tank_list(model);
 761         return model;
 762 }
 763
 764 static void size_data_func(GtkTreeViewColumn *col,
 765                            GtkCellRenderer *renderer,
 766                            GtkTreeModel *model,
 767                            GtkTreeIter *iter,
 768                            gpointer data)
 769 {
 770         int ml, mbar;
 771         double size, pressure;
 772         char buffer[10];
 773
 774         gtk_tree_model_get(model, iter, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 775         convert_volume_pressure(ml, mbar, &size, &pressure);
 776         if (size)
 777                 snprintf(buffer, sizeof(buffer), "%.1f", size);
 778         else
 779                 strcpy(buffer, "unkn");
 780         g_object_set(renderer, "text", buffer, NULL);
 781 }
 782
 783 static void pressure_data_func(GtkTreeViewColumn *col,
 784                            GtkCellRenderer *renderer,
 785                            GtkTreeModel *model,
 786                            GtkTreeIter *iter,
 787                            gpointer data)
 788 {
 789         int index = (long)data;
 790         int mbar, decimals;
 791         double pressure;
 792         char buffer[10];
 793
 794         gtk_tree_model_get(model, iter, index, &mbar, -1);
 795         decimals = convert_pressure(mbar, &pressure);
 796         if (mbar)
 797                 snprintf(buffer, sizeof(buffer), "%.*f", decimals, pressure);
 798         else
 799                 *buffer = 0;
 800         g_object_set(renderer, "text", buffer, NULL);
 801 }
 802
 803 static void percentage_data_func(GtkTreeViewColumn *col,
 804                            GtkCellRenderer *renderer,
 805                            GtkTreeModel *model,
 806                            GtkTreeIter *iter,
 807                            gpointer data)
 808 {
 809         int index = (long)data;
 810         int permille;
 811         char buffer[10];
 812
 813         gtk_tree_model_get(model, iter, index, &permille, -1);
 814         if (permille)
 815                 snprintf(buffer, sizeof(buffer), "%.1f%%", permille / 10.0);
 816         else
 817                 *buffer = 0;
 818         g_object_set(renderer, "text", buffer, NULL);
 819 }
 820
 821 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
 822 {
 823         GtkTreeIter iter;
 824         int selected;
 825
 826         selected = gtk_tree_selection_get_selected(selection, NULL, &iter);
 827         gtk_widget_set_sensitive(cylinder_list.edit, selected);
 828         gtk_widget_set_sensitive(cylinder_list.del, selected);
 829 }
 830
 831 static void row_activated_cb(GtkTreeView *tree_view,
 832                         GtkTreePath *path,
 833                         GtkTreeViewColumn *column,
 834                         GtkTreeModel *model)
 835 {
 836         edit_cb(NULL, NULL);
 837 }
 838
 839 static GtkWidget *cylinder_list_create(void)
 840 {
 841         GtkWidget *tree_view;
 842         GtkTreeSelection *selection;
 843         GtkListStore *model;
 844
 845         model = gtk_list_store_new(CYL_COLUMNS,
 846                 G_TYPE_STRING,          /* CYL_DESC: utf8 */
 847                 G_TYPE_INT,             /* CYL_SIZE: mliter */
 848                 G_TYPE_INT,             /* CYL_WORKP: mbar */
 849                 G_TYPE_INT,             /* CYL_STARTP: mbar */
 850                 G_TYPE_INT,             /* CYL_ENDP: mbar */
 851                 G_TYPE_INT,             /* CYL_O2: permille */
 852                 G_TYPE_INT              /* CYL_HE: permille */
 853                 );
 854         cylinder_list.model = model;
 855         tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
 856         g_signal_connect(tree_view, "row-activated", G_CALLBACK(row_activated_cb), model);
 857
 858         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
 859         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
 860         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), model);
 861
 862         g_object_set(G_OBJECT(tree_view), "headers-visible", TRUE,
 863                                           "enable-grid-lines", GTK_TREE_VIEW_GRID_LINES_BOTH,
 864                                           NULL);
 865
 866         cylinder_list.desc = tree_view_column(tree_view, CYL_DESC, "Type", NULL, PANGO_ALIGN_LEFT, TRUE);
 867         cylinder_list.size = tree_view_column(tree_view, CYL_SIZE, "Size", size_data_func, PANGO_ALIGN_RIGHT, TRUE);
 868         cylinder_list.workp = tree_view_column(tree_view, CYL_WORKP, "MaxPress", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 869         cylinder_list.startp = tree_view_column(tree_view, CYL_STARTP, "Start", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 870         cylinder_list.endp = tree_view_column(tree_view, CYL_ENDP, "End", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 871         cylinder_list.o2 = tree_view_column(tree_view, CYL_O2, "O" UTF8_SUBSCRIPT_2 "%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 872         cylinder_list.he = tree_view_column(tree_view, CYL_HE, "He%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 873         return tree_view;
 874 }
 875
 876 GtkWidget *equipment_widget(void)
 877 {
 878         GtkWidget *vbox, *hbox, *frame, *framebox;
 879         GtkWidget *add, *del, *edit;
 880
 881         vbox = gtk_vbox_new(FALSE, 3);
 882
 883         /*
 884          * We create the cylinder size model at startup, since
 885          * we're going to share it across all cylinders and all
 886          * dives. So if you add a new cylinder type in one dive,
 887          * it will show up when you edit the cylinder types for
 888          * another dive.
 889          */
 890         cylinder_model = create_tank_size_model();
 891
 892         cylinder_list.tree_view = cylinder_list_create();
 893
 894         hbox = gtk_hbox_new(FALSE, 3);
 895         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 3);
 896
 897         frame = gtk_frame_new("Cylinders");
 898         gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 3);
 899
 900         framebox = gtk_vbox_new(FALSE, 3);
 901         gtk_container_add(GTK_CONTAINER(frame), framebox);
 902
 903         hbox = gtk_hbox_new(FALSE, 3);
 904         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 905
 906         gtk_box_pack_start(GTK_BOX(hbox), cylinder_list.tree_view, TRUE, FALSE, 3);
 907
 908         hbox = gtk_hbox_new(TRUE, 3);
 909         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 910
 911         edit = gtk_button_new_from_stock(GTK_STOCK_EDIT);
 912         add = gtk_button_new_from_stock(GTK_STOCK_ADD);
 913         del = gtk_button_new_from_stock(GTK_STOCK_DELETE);
 914         gtk_box_pack_start(GTK_BOX(hbox), edit, FALSE, FALSE, 0);
 915         gtk_box_pack_start(GTK_BOX(hbox), add, FALSE, FALSE, 0);
 916         gtk_box_pack_start(GTK_BOX(hbox), del, FALSE, FALSE, 0);
 917
 918         cylinder_list.edit = edit;
 919         cylinder_list.add = add;
 920         cylinder_list.del = del;
 921
 922         g_signal_connect(edit, "clicked", G_CALLBACK(edit_cb), NULL);
 923         g_signal_connect(add, "clicked", G_CALLBACK(add_cb), NULL);
 924         g_signal_connect(del, "clicked", G_CALLBACK(del_cb), NULL);
 925
 926         return vbox;
 927 }