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  *
   7  * called from gtk-ui:
   8  * GtkWidget *equipment_widget(void)
   9  */
  10 #include <stdio.h>
  11 #include <string.h>
  12 #include <stdlib.h>
  13 #include <stdarg.h>
  14 #include <time.h>
  15
  16 #include "dive.h"
  17 #include "display.h"
  18 #include "display-gtk.h"
  19 #include "divelist.h"
  20
  21 static GtkListStore *cylinder_model;
  22
  23 enum {
  24         CYL_DESC,
  25         CYL_SIZE,
  26         CYL_WORKP,
  27         CYL_STARTP,
  28         CYL_ENDP,
  29         CYL_O2,
  30         CYL_HE,
  31         CYL_COLUMNS
  32 };
  33
  34 static struct {
  35         int max_index;
  36         GtkListStore *model;
  37         GtkWidget *edit, *add, *del;
  38 } cylinder_list;
  39
  40 struct cylinder_widget {
  41         int index, changed;
  42         const char *name;
  43         GtkWidget *hbox;
  44         GtkComboBox *description;
  45         GtkSpinButton *size, *pressure;
  46         GtkWidget *start, *end, *pressure_button;
  47         GtkWidget *o2, *he, *gasmix_button;
  48 };
  49
  50 /* we want bar - so let's not use our unit functions */
  51 static int convert_pressure(int mbar, double *p)
  52 {
  53         int decimals = 1;
  54         double pressure;
  55
  56         if (output_units.pressure == PSI) {
  57                 pressure = mbar_to_PSI(mbar);
  58                 decimals = 0;
  59         } else {
  60                 pressure = mbar / 1000.0;
  61         }
  62
  63         *p = pressure;
  64         return decimals;
  65 }
  66
  67 static int convert_volume_pressure(int ml, int mbar, double *v, double *p)
  68 {
  69         int decimals = 1;
  70         double volume, pressure;
  71
  72         volume = ml / 1000.0;
  73         if (mbar) {
  74                 if (output_units.volume == CUFT) {
  75                         volume = ml_to_cuft(ml);
  76                         volume *= bar_to_atm(mbar / 1000.0);
  77                 }
  78
  79                 if (output_units.pressure == PSI) {
  80                         pressure = mbar_to_PSI(mbar);
  81                         decimals = 0;
  82                 } else
  83                         pressure = mbar / 1000.0;
  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, cylinder_t *cyl)
 100 {
 101         int set;
 102         unsigned int start, end;
 103         double pressure;
 104
 105         start = cyl->start.mbar;
 106         end = cyl->end.mbar;
 107         set = start || end;
 108         if (!set) {
 109                 start = cyl->sample_start.mbar;
 110                 end = cyl->sample_end.mbar;
 111         }
 112         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->pressure_button), set);
 113         gtk_widget_set_sensitive(cylinder->start, set);
 114         gtk_widget_set_sensitive(cylinder->end, set);
 115
 116         convert_pressure(start, &pressure);
 117         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->start), pressure);
 118         convert_pressure(end, &pressure);
 119         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->end), pressure);
 120 }
 121
 122 /*
 123  * The gtk_tree_model_foreach() interface is bad. It could have
 124  * returned whether the callback ever returned true
 125  */
 126 static GtkTreeIter *found_match = NULL;
 127 static GtkTreeIter match_iter;
 128
 129 static gboolean match_cylinder(GtkTreeModel *model,
 130                                 GtkTreePath *path,
 131                                 GtkTreeIter *iter,
 132                                 gpointer data)
 133 {
 134         int match;
 135         gchar *name;
 136         const char *desc = data;
 137
 138         gtk_tree_model_get(model, iter, 0, &name, -1);
 139         match = !strcmp(desc, name);
 140         g_free(name);
 141         if (match) {
 142                 match_iter = *iter;
 143                 found_match = &match_iter;
 144         }
 145         return match;
 146 }
 147
 148 static int get_active_cylinder(GtkComboBox *combo_box, GtkTreeIter *iter)
 149 {
 150         char *desc;
 151
 152         if (gtk_combo_box_get_active_iter(combo_box, iter))
 153                 return TRUE;
 154
 155         desc = gtk_combo_box_get_active_text(combo_box);
 156
 157         found_match = NULL;
 158         gtk_tree_model_foreach(GTK_TREE_MODEL(cylinder_model), match_cylinder, (void *)desc);
 159
 160         g_free(desc);
 161         if (!found_match)
 162                 return FALSE;
 163
 164         *iter = *found_match;
 165         gtk_combo_box_set_active_iter(combo_box, iter);
 166         return TRUE;
 167 }
 168
 169 static void cylinder_cb(GtkComboBox *combo_box, gpointer data)
 170 {
 171         GtkTreeIter iter;
 172         GtkTreeModel *model = gtk_combo_box_get_model(combo_box);
 173         int ml, mbar;
 174         struct cylinder_widget *cylinder = data;
 175         cylinder_t *cyl = current_dive->cylinder + cylinder->index;
 176
 177         /* Did the user set it to some non-standard value? */
 178         if (!get_active_cylinder(combo_box, &iter)) {
 179                 cylinder->changed = 1;
 180                 return;
 181         }
 182
 183         /*
 184          * We get "change" signal callbacks just because we set
 185          * the description by hand. Whatever. So ignore them if
 186          * they are no-ops.
 187          */
 188         if (!cylinder->changed && cyl->type.description) {
 189                 int same;
 190                 char *desc = gtk_combo_box_get_active_text(combo_box);
 191
 192                 same = !strcmp(desc, cyl->type.description);
 193                 g_free(desc);
 194                 if (same)
 195                         return;
 196         }
 197         cylinder->changed = 1;
 198
 199         gtk_tree_model_get(model, &iter,
 200                 CYL_SIZE, &ml,
 201                 CYL_WORKP, &mbar,
 202                 -1);
 203
 204         set_cylinder_type_spinbuttons(cylinder, ml, mbar);
 205 }
 206
 207 static GtkTreeIter *add_cylinder_type(const char *desc, int ml, int mbar, GtkTreeIter *iter)
 208 {
 209         GtkTreeModel *model;
 210
 211         /* Don't even bother adding stuff without a size */
 212         if (!ml)
 213                 return NULL;
 214
 215         found_match = NULL;
 216         model = GTK_TREE_MODEL(cylinder_model);
 217         gtk_tree_model_foreach(model, match_cylinder, (void *)desc);
 218
 219         if (!found_match) {
 220                 GtkListStore *store = GTK_LIST_STORE(model);
 221
 222                 gtk_list_store_append(store, iter);
 223                 gtk_list_store_set(store, iter,
 224                         0, desc,
 225                         1, ml,
 226                         2, mbar,
 227                         -1);
 228                 return iter;
 229         }
 230         return found_match;
 231 }
 232
 233 /*
 234  * When adding a dive, we'll add all the pre-existing cylinder
 235  * information from that dive to our cylinder model.
 236  */
 237 void add_cylinder_description(cylinder_type_t *type)
 238 {
 239         GtkTreeIter iter;
 240         const char *desc;
 241         unsigned int size, workp;
 242
 243         desc = type->description;
 244         if (!desc)
 245                 return;
 246         size = type->size.mliter;
 247         workp = type->workingpressure.mbar;
 248         add_cylinder_type(desc, size, workp, &iter);
 249 }
 250
 251 static void add_cylinder(struct cylinder_widget *cylinder, const char *desc, int ml, int mbar)
 252 {
 253         GtkTreeIter iter, *match;
 254
 255         cylinder->name = desc;
 256         match = add_cylinder_type(desc, ml, mbar, &iter);
 257         if (match)
 258                 gtk_combo_box_set_active_iter(cylinder->description, match);
 259 }
 260
 261 static void show_cylinder(cylinder_t *cyl, struct cylinder_widget *cylinder)
 262 {
 263         const char *desc;
 264         int ml, mbar;
 265         int gasmix;
 266         double o2, he;
 267
 268         /* Don't show uninitialized cylinder widgets */
 269         if (!cylinder->description)
 270                 return;
 271
 272         desc = cyl->type.description;
 273         if (!desc)
 274                 desc = "";
 275         ml = cyl->type.size.mliter;
 276         mbar = cyl->type.workingpressure.mbar;
 277         add_cylinder(cylinder, desc, ml, mbar);
 278
 279         set_cylinder_type_spinbuttons(cylinder,
 280                 cyl->type.size.mliter, cyl->type.workingpressure.mbar);
 281         set_cylinder_pressure_spinbuttons(cylinder, cyl);
 282
 283         gasmix = cyl->gasmix.o2.permille || cyl->gasmix.he.permille;
 284         gtk_widget_set_sensitive(cylinder->o2, gasmix);
 285         gtk_widget_set_sensitive(cylinder->he, gasmix);
 286         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button), gasmix);
 287
 288         o2 = cyl->gasmix.o2.permille / 10.0;
 289         he = cyl->gasmix.he.permille / 10.0;
 290         if (!o2)
 291                 o2 = 21.0;
 292         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->o2), o2);
 293         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->he), he);
 294 }
 295
 296 int cylinder_none(cylinder_t *cyl)
 297 {
 298         return  !cyl->type.size.mliter &&
 299                 !cyl->type.workingpressure.mbar &&
 300                 !cyl->type.description &&
 301                 !cyl->gasmix.o2.permille &&
 302                 !cyl->gasmix.he.permille &&
 303                 !cyl->sample_start.mbar &&
 304                 !cyl->sample_end.mbar &&
 305                 !cyl->start.mbar &&
 306                 !cyl->end.mbar;
 307 }
 308
 309 static void set_one_cylinder(int index, cylinder_t *cyl, GtkListStore *model, GtkTreeIter *iter)
 310 {
 311         unsigned int start, end;
 312
 313         start = cyl->start.mbar ? : cyl->sample_start.mbar;
 314         end = cyl->end.mbar ? : cyl->sample_end.mbar;
 315         gtk_list_store_set(model, iter,
 316                 CYL_DESC, cyl->type.description ? : "",
 317                 CYL_SIZE, cyl->type.size.mliter,
 318                 CYL_WORKP, cyl->type.workingpressure.mbar,
 319                 CYL_STARTP, start,
 320                 CYL_ENDP, end,
 321                 CYL_O2, cyl->gasmix.o2.permille,
 322                 CYL_HE, cyl->gasmix.he.permille,
 323                 -1);
 324 }
 325
 326 void show_dive_equipment(struct dive *dive)
 327 {
 328         int i, max;
 329         GtkTreeIter iter;
 330         GtkListStore *model;
 331
 332         model = cylinder_list.model;
 333         gtk_list_store_clear(model);
 334         max = MAX_CYLINDERS;
 335         do {
 336                 cylinder_t *cyl = &dive->cylinder[max-1];
 337
 338                 if (!cylinder_none(cyl))
 339                         break;
 340         } while (--max);
 341
 342         cylinder_list.max_index = max;
 343
 344         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 345         gtk_widget_set_sensitive(cylinder_list.del, 0);
 346         gtk_widget_set_sensitive(cylinder_list.add, max < MAX_CYLINDERS);
 347
 348         for (i = 0; i < max; i++) {
 349                 cylinder_t *cyl = dive->cylinder+i;
 350
 351                 gtk_list_store_append(model, &iter);
 352                 set_one_cylinder(i, cyl, model, &iter);
 353         }
 354 }
 355
 356 static GtkWidget *create_spinbutton(GtkWidget *vbox, const char *name, double min, double max, double incr)
 357 {
 358         GtkWidget *frame, *hbox, *button;
 359
 360         frame = gtk_frame_new(name);
 361         gtk_box_pack_start(GTK_BOX(vbox), frame, TRUE, FALSE, 0);
 362
 363         hbox = gtk_hbox_new(FALSE, 3);
 364         gtk_container_add(GTK_CONTAINER(frame), hbox);
 365
 366         button = gtk_spin_button_new_with_range(min, max, incr);
 367         gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, FALSE, 0);
 368
 369         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 370
 371         return button;
 372 }
 373
 374 static void fill_cylinder_info(struct cylinder_widget *cylinder, cylinder_t *cyl, const char *desc,
 375                 double volume, double pressure, double start, double end, int o2, int he)
 376 {
 377         int mbar, ml;
 378
 379         if (output_units.pressure == PSI) {
 380                 pressure = psi_to_bar(pressure);
 381                 start = psi_to_bar(start);
 382                 end = psi_to_bar(end);
 383         }
 384
 385         if (pressure && output_units.volume == CUFT) {
 386                 volume = cuft_to_l(volume);
 387                 volume /= bar_to_atm(pressure);
 388         }
 389
 390         ml = volume * 1000 + 0.5;
 391         mbar = pressure * 1000 + 0.5;
 392
 393         /* Ignore obviously crazy He values */
 394         if (o2 + he > 1000)
 395                 he = 0;
 396
 397         /* We have a rule that normal air is all zeroes */
 398         if (!he && o2 > 208 && o2 < 211)
 399                 o2 = 0;
 400
 401         cyl->type.description = desc;
 402         cyl->type.size.mliter = ml;
 403         cyl->type.workingpressure.mbar = mbar;
 404         cyl->start.mbar = start * 1000 + 0.5;
 405         cyl->end.mbar = end * 1000 + 0.5;
 406         cyl->gasmix.o2.permille = o2;
 407         cyl->gasmix.he.permille = he;
 408
 409         /*
 410          * Also, insert it into the model if it doesn't already exist
 411          */
 412         add_cylinder(cylinder, desc, ml, mbar);
 413 }
 414
 415 static void record_cylinder_changes(cylinder_t *cyl, struct cylinder_widget *cylinder)
 416 {
 417         const gchar *desc;
 418         GtkComboBox *box;
 419         double volume, pressure, start, end;
 420         int o2, he;
 421
 422         /* Ignore uninitialized cylinder widgets */
 423         box = cylinder->description;
 424         if (!box)
 425                 return;
 426
 427         desc = gtk_combo_box_get_active_text(box);
 428         volume = gtk_spin_button_get_value(cylinder->size);
 429         pressure = gtk_spin_button_get_value(cylinder->pressure);
 430         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->pressure_button))) {
 431                 start = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->start));
 432                 end = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->end));
 433         } else {
 434                 start = end = 0;
 435         }
 436         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button))) {
 437                 o2 = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->o2))*10 + 0.5;
 438                 he = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->he))*10 + 0.5;
 439         } else {
 440                 o2 = 0;
 441                 he = 0;
 442         }
 443         fill_cylinder_info(cylinder, cyl, desc, volume, pressure, start, end, o2, he);
 444 }
 445
 446 /*
 447  * We hardcode the most common standard cylinders,
 448  * we should pick up any other names from the dive
 449  * logs directly.
 450  */
 451 static struct tank_info {
 452         const char *name;
 453         int cuft, ml, psi, bar;
 454 } tank_info[100] = {
 455         /* Need an empty entry for the no-cylinder case */
 456         { "", },
 457
 458         /* Size-only metric cylinders */
 459         { "10.0 l", .ml = 10000 },
 460         { "11.1 l", .ml = 11100 },
 461
 462         /* Most common AL cylinders */
 463         { "AL50",  .cuft =  50, .psi = 3000 },
 464         { "AL63",  .cuft =  63, .psi = 3000 },
 465         { "AL72",  .cuft =  72, .psi = 3000 },
 466         { "AL80",  .cuft =  80, .psi = 3000 },
 467         { "AL100", .cuft = 100, .psi = 3300 },
 468
 469         /* Somewhat common LP steel cylinders */
 470         { "LP85",  .cuft =  85, 2640 },
 471         { "LP95",  .cuft =  95, 2640 },
 472         { "LP108", .cuft = 108, 2640 },
 473         { "LP121", .cuft = 121, 2640 },
 474
 475         /* Somewhat common HP steel cylinders */
 476         { "HP65",  .cuft =  65, .psi = 3442 },
 477         { "HP80",  .cuft =  80, .psi = 3442 },
 478         { "HP100", .cuft = 100, .psi = 3442 },
 479         { "HP119", .cuft = 119, .psi = 3442 },
 480         { "HP130", .cuft = 130, .psi = 3442 },
 481
 482         /* Common European steel cylinders */
 483         { "10L 300 bar",  .ml = 10000, .bar = 300 },
 484         { "12L 200 bar",  .ml = 12000, .bar = 200 },
 485         { "12L 232 bar",  .ml = 12000, .bar = 232 },
 486         { "12L 300 bar",  .ml = 12000, .bar = 300 },
 487         { "15L 200 bar",  .ml = 15000, .bar = 200 },
 488         { "15L 232 bar",  .ml = 15000, .bar = 232 },
 489         { "D7 300 bar",   .ml = 14000, .bar = 300 },
 490         { "D8.5 232 bar", .ml = 17000, .bar = 232 },
 491         { "D12 232 bar",  .ml = 24000, .bar = 232 },
 492
 493         /* We'll fill in more from the dive log dynamically */
 494         { NULL, }
 495 };
 496
 497 static void fill_tank_list(GtkListStore *store)
 498 {
 499         GtkTreeIter iter;
 500         struct tank_info *info = tank_info;
 501
 502         while (info->name) {
 503                 int ml = info->ml;
 504                 int cuft = info->cuft;
 505                 int psi = info->psi;
 506                 int mbar;
 507                 double bar = info->bar;
 508
 509                 /* Is it in cuft and psi? */
 510                 if (psi) {
 511                         bar = psi_to_bar(psi);
 512
 513                         if (cuft) {
 514                                 double airvolume = cuft_to_l(cuft) * 1000.0;
 515                                 double atm = bar_to_atm(bar);
 516
 517                                 ml = airvolume / atm + 0.5;
 518                         }
 519                 }
 520
 521                 mbar = bar * 1000 + 0.5;
 522
 523                 gtk_list_store_append(store, &iter);
 524                 gtk_list_store_set(store, &iter,
 525                         0, info->name,
 526                         1, ml,
 527                         2, mbar,
 528                         -1);
 529                 info++;
 530         }
 531 }
 532
 533 static void gasmix_cb(GtkToggleButton *button, gpointer data)
 534 {
 535         struct cylinder_widget *cylinder = data;
 536         int state;
 537
 538         state = gtk_toggle_button_get_active(button);
 539         gtk_widget_set_sensitive(cylinder->o2, state);
 540         gtk_widget_set_sensitive(cylinder->he, state);
 541 }
 542
 543 static void pressure_cb(GtkToggleButton *button, gpointer data)
 544 {
 545         struct cylinder_widget *cylinder = data;
 546         int state;
 547
 548         state = gtk_toggle_button_get_active(button);
 549         gtk_widget_set_sensitive(cylinder->start, state);
 550         gtk_widget_set_sensitive(cylinder->end, state);
 551 }
 552
 553 static gboolean completion_cb(GtkEntryCompletion *widget, GtkTreeModel *model, GtkTreeIter *iter, struct cylinder_widget *cylinder)
 554 {
 555         const char *desc;
 556         unsigned int ml, mbar;
 557
 558         gtk_tree_model_get(model, iter, CYL_DESC, &desc, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 559         add_cylinder(cylinder, desc, ml, mbar);
 560         return TRUE;
 561 }
 562
 563 static void cylinder_activate_cb(GtkComboBox *combo_box, gpointer data)
 564 {
 565         struct cylinder_widget *cylinder = data;
 566         cylinder_cb(cylinder->description, data);
 567 }
 568
 569 /* Return a frame containing a hbox inside a hbox */
 570 static GtkWidget *frame_box(const char *title, GtkWidget *vbox)
 571 {
 572         GtkWidget *hbox, *frame;
 573
 574         hbox = gtk_hbox_new(FALSE, 10);
 575         gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, FALSE, 0);
 576
 577         frame = gtk_frame_new(title);
 578         gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 0);
 579
 580         hbox = gtk_hbox_new(FALSE, 10);
 581         gtk_container_add(GTK_CONTAINER(frame), hbox);
 582
 583         return hbox;
 584 }
 585
 586 static GtkWidget *labeled_spinbutton(GtkWidget *box, const char *name, double min, double max, double incr)
 587 {
 588         GtkWidget *hbox, *label, *button;
 589
 590         hbox = gtk_hbox_new(FALSE, 0);
 591         gtk_box_pack_start(GTK_BOX(box), hbox, TRUE, FALSE, 0);
 592
 593         label = gtk_label_new(name);
 594         gtk_box_pack_start(GTK_BOX(hbox), label, TRUE, FALSE, 0);
 595
 596         button = gtk_spin_button_new_with_range(min, max, incr);
 597         gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, FALSE, 0);
 598
 599         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 600
 601         return button;
 602 }
 603
 604 static void cylinder_widget(GtkWidget *vbox, struct cylinder_widget *cylinder, GtkListStore *model)
 605 {
 606         GtkWidget *frame, *hbox;
 607         GtkEntry *entry;
 608         GtkEntryCompletion *completion;
 609         GtkWidget *widget;
 610
 611         /*
 612          * Cylinder type: description, size and
 613          * working pressure
 614          */
 615         frame = gtk_frame_new("Cylinder");
 616
 617         hbox = gtk_hbox_new(FALSE, 3);
 618         gtk_container_add(GTK_CONTAINER(frame), hbox);
 619
 620         widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
 621         gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
 622
 623         cylinder->description = GTK_COMBO_BOX(widget);
 624         g_signal_connect(widget, "changed", G_CALLBACK(cylinder_cb), cylinder);
 625
 626         entry = GTK_ENTRY(GTK_BIN(widget)->child);
 627         g_signal_connect(entry, "activate", G_CALLBACK(cylinder_activate_cb), cylinder);
 628
 629         completion = gtk_entry_completion_new();
 630         gtk_entry_completion_set_text_column(completion, 0);
 631         gtk_entry_completion_set_model(completion, GTK_TREE_MODEL(model));
 632         g_signal_connect(completion, "match-selected", G_CALLBACK(completion_cb), cylinder);
 633         gtk_entry_set_completion(entry, completion);
 634
 635         hbox = gtk_hbox_new(FALSE, 3);
 636         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 637         gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, TRUE, 0);
 638
 639         widget = create_spinbutton(hbox, "Size", 0, 300, 0.1);
 640         cylinder->size = GTK_SPIN_BUTTON(widget);
 641
 642         widget = create_spinbutton(hbox, "Pressure", 0, 5000, 1);
 643         cylinder->pressure = GTK_SPIN_BUTTON(widget);
 644
 645         /*
 646          * Cylinder start/end pressures
 647          */
 648         hbox = frame_box("Pressure", vbox);
 649
 650         widget = labeled_spinbutton(hbox, "Start", 0, 5000, 1);
 651         cylinder->start = widget;
 652
 653         widget = labeled_spinbutton(hbox, "End", 0, 5000, 1);
 654         cylinder->end = widget;
 655
 656         cylinder->pressure_button = gtk_check_button_new();
 657         gtk_box_pack_start(GTK_BOX(hbox), cylinder->pressure_button, FALSE, FALSE, 3);
 658         g_signal_connect(cylinder->pressure_button, "toggled", G_CALLBACK(pressure_cb), cylinder);
 659
 660         /*
 661          * Cylinder gas mix: Air, Nitrox or Trimix
 662          */
 663         hbox = frame_box("Gasmix", vbox);
 664
 665         widget = labeled_spinbutton(hbox, "O"UTF8_SUBSCRIPT_2 "%", 1, 100, 0.1);
 666         cylinder->o2 = widget;
 667         widget = labeled_spinbutton(hbox, "He%", 0, 100, 0.1);
 668         cylinder->he = widget;
 669         cylinder->gasmix_button = gtk_check_button_new();
 670         gtk_box_pack_start(GTK_BOX(hbox), cylinder->gasmix_button, FALSE, FALSE, 3);
 671         g_signal_connect(cylinder->gasmix_button, "toggled", G_CALLBACK(gasmix_cb), cylinder);
 672 }
 673
 674 static int edit_cylinder_dialog(int index, cylinder_t *cyl)
 675 {
 676         int success;
 677         GtkWidget *dialog, *vbox;
 678         struct cylinder_widget cylinder;
 679         struct dive *dive;
 680
 681         cylinder.index = index;
 682         cylinder.changed = 0;
 683
 684         dive = current_dive;
 685         if (!dive)
 686                 return 0;
 687         *cyl = dive->cylinder[index];
 688
 689         dialog = gtk_dialog_new_with_buttons("Cylinder",
 690                 GTK_WINDOW(main_window),
 691                 GTK_DIALOG_DESTROY_WITH_PARENT,
 692                 GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
 693                 GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
 694                 NULL);
 695
 696         vbox = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
 697         cylinder_widget(vbox, &cylinder, cylinder_model);
 698
 699         show_cylinder(cyl, &cylinder);
 700
 701         gtk_widget_show_all(dialog);
 702         success = gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT;
 703         if (success) {
 704                 record_cylinder_changes(cyl, &cylinder);
 705                 dive->cylinder[index] = *cyl;
 706                 mark_divelist_changed(TRUE);
 707                 update_cylinder_related_info(dive);
 708                 flush_divelist(dive);
 709         }
 710
 711         gtk_widget_destroy(dialog);
 712
 713         return success;
 714 }
 715
 716 static int get_model_index(GtkListStore *model, GtkTreeIter *iter)
 717 {
 718         int *p, index;
 719         GtkTreePath *path;
 720
 721         path = gtk_tree_model_get_path(GTK_TREE_MODEL(model), iter);
 722         p = gtk_tree_path_get_indices(path);
 723         index = p ? *p : 0;
 724         gtk_tree_path_free(path);
 725         return index;
 726 }
 727
 728 static void edit_cb(GtkButton *button, GtkTreeView *tree_view)
 729 {
 730         int index;
 731         GtkTreeIter iter;
 732         GtkListStore *model = cylinder_list.model;
 733         GtkTreeSelection *selection;
 734         cylinder_t cyl;
 735
 736         selection = gtk_tree_view_get_selection(tree_view);
 737
 738         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 739         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 740                 return;
 741
 742         index = get_model_index(model, &iter);
 743         if (!edit_cylinder_dialog(index, &cyl))
 744                 return;
 745
 746         set_one_cylinder(index, &cyl, model, &iter);
 747         repaint_dive();
 748 }
 749
 750 static void add_cb(GtkButton *button, GtkTreeView *tree_view)
 751 {
 752         int index = cylinder_list.max_index;
 753         GtkTreeIter iter;
 754         GtkListStore *model = cylinder_list.model;
 755         GtkTreeSelection *selection;
 756         cylinder_t cyl;
 757
 758         if (!edit_cylinder_dialog(index, &cyl))
 759                 return;
 760
 761         gtk_list_store_append(model, &iter);
 762         set_one_cylinder(index, &cyl, model, &iter);
 763
 764         selection = gtk_tree_view_get_selection(tree_view);
 765         gtk_tree_selection_select_iter(selection, &iter);
 766
 767         cylinder_list.max_index++;
 768         gtk_widget_set_sensitive(cylinder_list.add, cylinder_list.max_index < MAX_CYLINDERS);
 769 }
 770
 771 static void del_cb(GtkButton *button, GtkTreeView *tree_view)
 772 {
 773         int index, nr;
 774         GtkTreeIter iter;
 775         GtkListStore *model = cylinder_list.model;
 776         GtkTreeSelection *selection;
 777         struct dive *dive;
 778         cylinder_t *cyl;
 779
 780         selection = gtk_tree_view_get_selection(tree_view);
 781
 782         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 783         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 784                 return;
 785
 786         index = get_model_index(model, &iter);
 787
 788         dive = current_dive;
 789         if (!dive)
 790                 return;
 791         cyl = dive->cylinder + index;
 792         nr = cylinder_list.max_index - index - 1;
 793
 794         gtk_list_store_remove(model, &iter);
 795
 796         cylinder_list.max_index--;
 797         memmove(cyl, cyl+1, nr*sizeof(*cyl));
 798         memset(cyl+nr, 0, sizeof(*cyl));
 799
 800         mark_divelist_changed(TRUE);
 801         flush_divelist(dive);
 802
 803         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 804         gtk_widget_set_sensitive(cylinder_list.del, 0);
 805         gtk_widget_set_sensitive(cylinder_list.add, 1);
 806 }
 807
 808 static GtkListStore *create_tank_size_model(void)
 809 {
 810         GtkListStore *model;
 811
 812         model = gtk_list_store_new(3,
 813                 G_TYPE_STRING,          /* Tank name */
 814                 G_TYPE_INT,             /* Tank size in mliter */
 815                 G_TYPE_INT,             /* Tank working pressure in mbar */
 816                 -1);
 817
 818         fill_tank_list(model);
 819         return model;
 820 }
 821
 822 static void size_data_func(GtkTreeViewColumn *col,
 823                            GtkCellRenderer *renderer,
 824                            GtkTreeModel *model,
 825                            GtkTreeIter *iter,
 826                            gpointer data)
 827 {
 828         int ml, mbar;
 829         double size, pressure;
 830         char buffer[10];
 831
 832         gtk_tree_model_get(model, iter, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 833         convert_volume_pressure(ml, mbar, &size, &pressure);
 834         if (size)
 835                 snprintf(buffer, sizeof(buffer), "%.1f", size);
 836         else
 837                 strcpy(buffer, "unkn");
 838         g_object_set(renderer, "text", buffer, NULL);
 839 }
 840
 841 static void pressure_data_func(GtkTreeViewColumn *col,
 842                            GtkCellRenderer *renderer,
 843                            GtkTreeModel *model,
 844                            GtkTreeIter *iter,
 845                            gpointer data)
 846 {
 847         int index = (long)data;
 848         int mbar, decimals;
 849         double pressure;
 850         char buffer[10];
 851
 852         gtk_tree_model_get(model, iter, index, &mbar, -1);
 853         decimals = convert_pressure(mbar, &pressure);
 854         if (mbar)
 855                 snprintf(buffer, sizeof(buffer), "%.*f", decimals, pressure);
 856         else
 857                 *buffer = 0;
 858         g_object_set(renderer, "text", buffer, NULL);
 859 }
 860
 861 static void percentage_data_func(GtkTreeViewColumn *col,
 862                            GtkCellRenderer *renderer,
 863                            GtkTreeModel *model,
 864                            GtkTreeIter *iter,
 865                            gpointer data)
 866 {
 867         int index = (long)data;
 868         int permille;
 869         char buffer[10];
 870
 871         gtk_tree_model_get(model, iter, index, &permille, -1);
 872         if (permille)
 873                 snprintf(buffer, sizeof(buffer), "%.1f%%", permille / 10.0);
 874         else
 875                 *buffer = 0;
 876         g_object_set(renderer, "text", buffer, NULL);
 877 }
 878
 879 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
 880 {
 881         GtkTreeIter iter;
 882         int selected;
 883
 884         selected = gtk_tree_selection_get_selected(selection, NULL, &iter);
 885         gtk_widget_set_sensitive(cylinder_list.edit, selected);
 886         gtk_widget_set_sensitive(cylinder_list.del, selected);
 887 }
 888
 889 static void row_activated_cb(GtkTreeView *tree_view,
 890                         GtkTreePath *path,
 891                         GtkTreeViewColumn *column,
 892                         GtkTreeModel *model)
 893 {
 894         edit_cb(NULL, tree_view);
 895 }
 896
 897 GtkWidget *cylinder_list_widget(void)
 898 {
 899         GtkListStore *model = cylinder_list.model;
 900         GtkWidget *tree_view;
 901         GtkTreeSelection *selection;
 902
 903         tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
 904         gtk_widget_set_can_focus(tree_view, FALSE);
 905
 906         g_signal_connect(tree_view, "row-activated", G_CALLBACK(row_activated_cb), model);
 907
 908         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
 909         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
 910         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), model);
 911
 912         g_object_set(G_OBJECT(tree_view), "headers-visible", TRUE,
 913                                           "enable-grid-lines", GTK_TREE_VIEW_GRID_LINES_BOTH,
 914                                           NULL);
 915
 916         tree_view_column(tree_view, CYL_DESC, "Type", NULL, ALIGN_LEFT | UNSORTABLE);
 917         tree_view_column(tree_view, CYL_SIZE, "Size", size_data_func, ALIGN_RIGHT | UNSORTABLE);
 918         tree_view_column(tree_view, CYL_WORKP, "MaxPress", pressure_data_func, ALIGN_RIGHT | UNSORTABLE);
 919         tree_view_column(tree_view, CYL_STARTP, "Start", pressure_data_func, ALIGN_RIGHT | UNSORTABLE);
 920         tree_view_column(tree_view, CYL_ENDP, "End", pressure_data_func, ALIGN_RIGHT | UNSORTABLE);
 921         tree_view_column(tree_view, CYL_O2, "O" UTF8_SUBSCRIPT_2 "%", percentage_data_func, ALIGN_RIGHT | UNSORTABLE);
 922         tree_view_column(tree_view, CYL_HE, "He%", percentage_data_func, ALIGN_RIGHT | UNSORTABLE);
 923         return tree_view;
 924 }
 925
 926 static GtkWidget *cylinder_list_create(void)
 927 {
 928         GtkListStore *model;
 929
 930         model = gtk_list_store_new(CYL_COLUMNS,
 931                 G_TYPE_STRING,          /* CYL_DESC: utf8 */
 932                 G_TYPE_INT,             /* CYL_SIZE: mliter */
 933                 G_TYPE_INT,             /* CYL_WORKP: mbar */
 934                 G_TYPE_INT,             /* CYL_STARTP: mbar */
 935                 G_TYPE_INT,             /* CYL_ENDP: mbar */
 936                 G_TYPE_INT,             /* CYL_O2: permille */
 937                 G_TYPE_INT              /* CYL_HE: permille */
 938                 );
 939         cylinder_list.model = model;
 940         return cylinder_list_widget();
 941 }
 942
 943 GtkWidget *equipment_widget(void)
 944 {
 945         GtkWidget *vbox, *hbox, *frame, *framebox, *tree_view;
 946         GtkWidget *add, *del, *edit;
 947
 948         vbox = gtk_vbox_new(FALSE, 3);
 949
 950         /*
 951          * We create the cylinder size model at startup, since
 952          * we're going to share it across all cylinders and all
 953          * dives. So if you add a new cylinder type in one dive,
 954          * it will show up when you edit the cylinder types for
 955          * another dive.
 956          */
 957         cylinder_model = create_tank_size_model();
 958
 959         tree_view = cylinder_list_create();
 960
 961         hbox = gtk_hbox_new(FALSE, 3);
 962         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 3);
 963
 964         frame = gtk_frame_new("Cylinders");
 965         gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 3);
 966
 967         framebox = gtk_vbox_new(FALSE, 3);
 968         gtk_container_add(GTK_CONTAINER(frame), framebox);
 969
 970         hbox = gtk_hbox_new(FALSE, 3);
 971         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 972
 973         gtk_box_pack_start(GTK_BOX(hbox), tree_view, TRUE, FALSE, 3);
 974
 975         hbox = gtk_hbox_new(TRUE, 3);
 976         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 977
 978         edit = gtk_button_new_from_stock(GTK_STOCK_EDIT);
 979         add = gtk_button_new_from_stock(GTK_STOCK_ADD);
 980         del = gtk_button_new_from_stock(GTK_STOCK_DELETE);
 981         gtk_box_pack_start(GTK_BOX(hbox), edit, FALSE, FALSE, 0);
 982         gtk_box_pack_start(GTK_BOX(hbox), add, FALSE, FALSE, 0);
 983         gtk_box_pack_start(GTK_BOX(hbox), del, FALSE, FALSE, 0);
 984
 985         cylinder_list.edit = edit;
 986         cylinder_list.add = add;
 987         cylinder_list.del = del;
 988
 989         g_signal_connect(edit, "clicked", G_CALLBACK(edit_cb), tree_view);
 990         g_signal_connect(add, "clicked", G_CALLBACK(add_cb), tree_view);
 991         g_signal_connect(del, "clicked", G_CALLBACK(del_cb), tree_view);
 992
 993         return vbox;
 994 }