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 size;       /* cuft if < 1000, otherwise mliter */
 454         int psi;        /* If zero, size is in mliter */
 455 } tank_info[100] = {
 456         /* Need an empty entry for the no-cylinder case */
 457         { "", 0, 0 },
 458
 459         /* Size-only metric cylinders */
 460         { "10.0 l", 10000 },
 461         { "11.1 l", 11100 },
 462
 463         /* Most common AL cylinders */
 464         { "AL50",   50, 3000 },
 465         { "AL63",   63, 3000 },
 466         { "AL72",   72, 3000 },
 467         { "AL80",   80, 3000 },
 468         { "AL100", 100, 3300 },
 469
 470         /* Somewhat common LP steel cylinders */
 471         { "LP85",   85, 2640 },
 472         { "LP95",   95, 2640 },
 473         { "LP108", 108, 2640 },
 474         { "LP121", 121, 2640 },
 475
 476         /* Somewhat common HP steel cylinders */
 477         { "HP65",   65, 3442 },
 478         { "HP80",   80, 3442 },
 479         { "HP100", 100, 3442 },
 480         { "HP119", 119, 3442 },
 481         { "HP130", 130, 3442 },
 482
 483         /* We'll fill in more from the dive log dynamically */
 484         { NULL, }
 485 };
 486
 487 static void fill_tank_list(GtkListStore *store)
 488 {
 489         GtkTreeIter iter;
 490         struct tank_info *info = tank_info;
 491
 492         while (info->name) {
 493                 int size = info->size;
 494                 int psi = info->psi;
 495                 int mbar = 0, ml = size;
 496
 497                 /* Is it in cuft and psi? */
 498                 if (psi) {
 499                         double bar = psi_to_bar(psi);
 500                         double airvolume = cuft_to_l(size) * 1000.0;
 501                         double atm = bar_to_atm(bar);
 502
 503                         ml = airvolume / atm + 0.5;
 504                         mbar = bar*1000 + 0.5;
 505                 }
 506
 507                 gtk_list_store_append(store, &iter);
 508                 gtk_list_store_set(store, &iter,
 509                         0, info->name,
 510                         1, ml,
 511                         2, mbar,
 512                         -1);
 513                 info++;
 514         }
 515 }
 516
 517 static void gasmix_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->o2, state);
 524         gtk_widget_set_sensitive(cylinder->he, state);
 525 }
 526
 527 static void pressure_cb(GtkToggleButton *button, gpointer data)
 528 {
 529         struct cylinder_widget *cylinder = data;
 530         int state;
 531
 532         state = gtk_toggle_button_get_active(button);
 533         gtk_widget_set_sensitive(cylinder->start, state);
 534         gtk_widget_set_sensitive(cylinder->end, state);
 535 }
 536
 537 static gboolean completion_cb(GtkEntryCompletion *widget, GtkTreeModel *model, GtkTreeIter *iter, struct cylinder_widget *cylinder)
 538 {
 539         const char *desc;
 540         unsigned int ml, mbar;
 541
 542         gtk_tree_model_get(model, iter, CYL_DESC, &desc, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 543         add_cylinder(cylinder, desc, ml, mbar);
 544         return TRUE;
 545 }
 546
 547 static void cylinder_activate_cb(GtkComboBox *combo_box, gpointer data)
 548 {
 549         struct cylinder_widget *cylinder = data;
 550         cylinder_cb(cylinder->description, data);
 551 }
 552
 553 /* Return a frame containing a hbox inside a hbox */
 554 static GtkWidget *frame_box(const char *title, GtkWidget *vbox)
 555 {
 556         GtkWidget *hbox, *frame;
 557
 558         hbox = gtk_hbox_new(FALSE, 10);
 559         gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, FALSE, 0);
 560
 561         frame = gtk_frame_new(title);
 562         gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 0);
 563
 564         hbox = gtk_hbox_new(FALSE, 10);
 565         gtk_container_add(GTK_CONTAINER(frame), hbox);
 566
 567         return hbox;
 568 }
 569
 570 static GtkWidget *labeled_spinbutton(GtkWidget *box, const char *name, double min, double max, double incr)
 571 {
 572         GtkWidget *hbox, *label, *button;
 573
 574         hbox = gtk_hbox_new(FALSE, 0);
 575         gtk_box_pack_start(GTK_BOX(box), hbox, TRUE, FALSE, 0);
 576
 577         label = gtk_label_new(name);
 578         gtk_box_pack_start(GTK_BOX(hbox), label, TRUE, FALSE, 0);
 579
 580         button = gtk_spin_button_new_with_range(min, max, incr);
 581         gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, FALSE, 0);
 582
 583         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 584
 585         return button;
 586 }
 587
 588 static void cylinder_widget(GtkWidget *vbox, struct cylinder_widget *cylinder, GtkListStore *model)
 589 {
 590         GtkWidget *frame, *hbox;
 591         GtkEntry *entry;
 592         GtkEntryCompletion *completion;
 593         GtkWidget *widget;
 594
 595         /*
 596          * Cylinder type: description, size and
 597          * working pressure
 598          */
 599         frame = gtk_frame_new("Cylinder");
 600
 601         hbox = gtk_hbox_new(FALSE, 3);
 602         gtk_container_add(GTK_CONTAINER(frame), hbox);
 603
 604         widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
 605         gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
 606
 607         cylinder->description = GTK_COMBO_BOX(widget);
 608         g_signal_connect(widget, "changed", G_CALLBACK(cylinder_cb), cylinder);
 609
 610         entry = GTK_ENTRY(GTK_BIN(widget)->child);
 611         g_signal_connect(entry, "activate", G_CALLBACK(cylinder_activate_cb), cylinder);
 612
 613         completion = gtk_entry_completion_new();
 614         gtk_entry_completion_set_text_column(completion, 0);
 615         gtk_entry_completion_set_model(completion, GTK_TREE_MODEL(model));
 616         g_signal_connect(completion, "match-selected", G_CALLBACK(completion_cb), cylinder);
 617         gtk_entry_set_completion(entry, completion);
 618
 619         hbox = gtk_hbox_new(FALSE, 3);
 620         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 621         gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, TRUE, 0);
 622
 623         widget = create_spinbutton(hbox, "Size", 0, 300, 0.1);
 624         cylinder->size = GTK_SPIN_BUTTON(widget);
 625
 626         widget = create_spinbutton(hbox, "Pressure", 0, 5000, 1);
 627         cylinder->pressure = GTK_SPIN_BUTTON(widget);
 628
 629         /*
 630          * Cylinder start/end pressures
 631          */
 632         hbox = frame_box("Pressure", vbox);
 633
 634         widget = labeled_spinbutton(hbox, "Start", 0, 5000, 1);
 635         cylinder->start = widget;
 636
 637         widget = labeled_spinbutton(hbox, "End", 0, 5000, 1);
 638         cylinder->end = widget;
 639
 640         cylinder->pressure_button = gtk_check_button_new();
 641         gtk_box_pack_start(GTK_BOX(hbox), cylinder->pressure_button, FALSE, FALSE, 3);
 642         g_signal_connect(cylinder->pressure_button, "toggled", G_CALLBACK(pressure_cb), cylinder);
 643
 644         /*
 645          * Cylinder gas mix: Air, Nitrox or Trimix
 646          */
 647         hbox = frame_box("Gasmix", vbox);
 648
 649         widget = labeled_spinbutton(hbox, "O"UTF8_SUBSCRIPT_2 "%", 1, 100, 0.1);
 650         cylinder->o2 = widget;
 651         widget = labeled_spinbutton(hbox, "He%", 0, 100, 0.1);
 652         cylinder->he = widget;
 653         cylinder->gasmix_button = gtk_check_button_new();
 654         gtk_box_pack_start(GTK_BOX(hbox), cylinder->gasmix_button, FALSE, FALSE, 3);
 655         g_signal_connect(cylinder->gasmix_button, "toggled", G_CALLBACK(gasmix_cb), cylinder);
 656 }
 657
 658 static int edit_cylinder_dialog(int index, cylinder_t *cyl)
 659 {
 660         int success;
 661         GtkWidget *dialog, *vbox;
 662         struct cylinder_widget cylinder;
 663         struct dive *dive;
 664
 665         cylinder.index = index;
 666         cylinder.changed = 0;
 667
 668         dive = current_dive;
 669         if (!dive)
 670                 return 0;
 671         *cyl = dive->cylinder[index];
 672
 673         dialog = gtk_dialog_new_with_buttons("Cylinder",
 674                 GTK_WINDOW(main_window),
 675                 GTK_DIALOG_DESTROY_WITH_PARENT,
 676                 GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
 677                 GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
 678                 NULL);
 679
 680         vbox = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
 681         cylinder_widget(vbox, &cylinder, cylinder_model);
 682
 683         show_cylinder(cyl, &cylinder);
 684
 685         gtk_widget_show_all(dialog);
 686         success = gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT;
 687         if (success) {
 688                 record_cylinder_changes(cyl, &cylinder);
 689                 dive->cylinder[index] = *cyl;
 690                 mark_divelist_changed(TRUE);
 691                 update_cylinder_related_info(dive);
 692                 flush_divelist(dive);
 693         }
 694
 695         gtk_widget_destroy(dialog);
 696
 697         return success;
 698 }
 699
 700 static int get_model_index(GtkListStore *model, GtkTreeIter *iter)
 701 {
 702         int *p, index;
 703         GtkTreePath *path;
 704
 705         path = gtk_tree_model_get_path(GTK_TREE_MODEL(model), iter);
 706         p = gtk_tree_path_get_indices(path);
 707         index = p ? *p : 0;
 708         gtk_tree_path_free(path);
 709         return index;
 710 }
 711
 712 static void edit_cb(GtkButton *button, GtkTreeView *tree_view)
 713 {
 714         int index;
 715         GtkTreeIter iter;
 716         GtkListStore *model = cylinder_list.model;
 717         GtkTreeSelection *selection;
 718         cylinder_t cyl;
 719
 720         selection = gtk_tree_view_get_selection(tree_view);
 721
 722         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 723         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 724                 return;
 725
 726         index = get_model_index(model, &iter);
 727         if (!edit_cylinder_dialog(index, &cyl))
 728                 return;
 729
 730         set_one_cylinder(index, &cyl, model, &iter);
 731         repaint_dive();
 732 }
 733
 734 static void add_cb(GtkButton *button, GtkTreeView *tree_view)
 735 {
 736         int index = cylinder_list.max_index;
 737         GtkTreeIter iter;
 738         GtkListStore *model = cylinder_list.model;
 739         GtkTreeSelection *selection;
 740         cylinder_t cyl;
 741
 742         if (!edit_cylinder_dialog(index, &cyl))
 743                 return;
 744
 745         gtk_list_store_append(model, &iter);
 746         set_one_cylinder(index, &cyl, model, &iter);
 747
 748         selection = gtk_tree_view_get_selection(tree_view);
 749         gtk_tree_selection_select_iter(selection, &iter);
 750
 751         cylinder_list.max_index++;
 752         gtk_widget_set_sensitive(cylinder_list.add, cylinder_list.max_index < MAX_CYLINDERS);
 753 }
 754
 755 static void del_cb(GtkButton *button, GtkTreeView *tree_view)
 756 {
 757         int index, nr;
 758         GtkTreeIter iter;
 759         GtkListStore *model = cylinder_list.model;
 760         GtkTreeSelection *selection;
 761         struct dive *dive;
 762         cylinder_t *cyl;
 763
 764         selection = gtk_tree_view_get_selection(tree_view);
 765
 766         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 767         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 768                 return;
 769
 770         index = get_model_index(model, &iter);
 771
 772         dive = current_dive;
 773         if (!dive)
 774                 return;
 775         cyl = dive->cylinder + index;
 776         nr = cylinder_list.max_index - index - 1;
 777
 778         gtk_list_store_remove(model, &iter);
 779
 780         cylinder_list.max_index--;
 781         memmove(cyl, cyl+1, nr*sizeof(*cyl));
 782         memset(cyl+nr, 0, sizeof(*cyl));
 783
 784         mark_divelist_changed(TRUE);
 785         flush_divelist(dive);
 786
 787         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 788         gtk_widget_set_sensitive(cylinder_list.del, 0);
 789         gtk_widget_set_sensitive(cylinder_list.add, 1);
 790 }
 791
 792 static GtkListStore *create_tank_size_model(void)
 793 {
 794         GtkListStore *model;
 795
 796         model = gtk_list_store_new(3,
 797                 G_TYPE_STRING,          /* Tank name */
 798                 G_TYPE_INT,             /* Tank size in mliter */
 799                 G_TYPE_INT,             /* Tank working pressure in mbar */
 800                 -1);
 801
 802         fill_tank_list(model);
 803         return model;
 804 }
 805
 806 static void size_data_func(GtkTreeViewColumn *col,
 807                            GtkCellRenderer *renderer,
 808                            GtkTreeModel *model,
 809                            GtkTreeIter *iter,
 810                            gpointer data)
 811 {
 812         int ml, mbar;
 813         double size, pressure;
 814         char buffer[10];
 815
 816         gtk_tree_model_get(model, iter, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 817         convert_volume_pressure(ml, mbar, &size, &pressure);
 818         if (size)
 819                 snprintf(buffer, sizeof(buffer), "%.1f", size);
 820         else
 821                 strcpy(buffer, "unkn");
 822         g_object_set(renderer, "text", buffer, NULL);
 823 }
 824
 825 static void pressure_data_func(GtkTreeViewColumn *col,
 826                            GtkCellRenderer *renderer,
 827                            GtkTreeModel *model,
 828                            GtkTreeIter *iter,
 829                            gpointer data)
 830 {
 831         int index = (long)data;
 832         int mbar, decimals;
 833         double pressure;
 834         char buffer[10];
 835
 836         gtk_tree_model_get(model, iter, index, &mbar, -1);
 837         decimals = convert_pressure(mbar, &pressure);
 838         if (mbar)
 839                 snprintf(buffer, sizeof(buffer), "%.*f", decimals, pressure);
 840         else
 841                 *buffer = 0;
 842         g_object_set(renderer, "text", buffer, NULL);
 843 }
 844
 845 static void percentage_data_func(GtkTreeViewColumn *col,
 846                            GtkCellRenderer *renderer,
 847                            GtkTreeModel *model,
 848                            GtkTreeIter *iter,
 849                            gpointer data)
 850 {
 851         int index = (long)data;
 852         int permille;
 853         char buffer[10];
 854
 855         gtk_tree_model_get(model, iter, index, &permille, -1);
 856         if (permille)
 857                 snprintf(buffer, sizeof(buffer), "%.1f%%", permille / 10.0);
 858         else
 859                 *buffer = 0;
 860         g_object_set(renderer, "text", buffer, NULL);
 861 }
 862
 863 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
 864 {
 865         GtkTreeIter iter;
 866         int selected;
 867
 868         selected = gtk_tree_selection_get_selected(selection, NULL, &iter);
 869         gtk_widget_set_sensitive(cylinder_list.edit, selected);
 870         gtk_widget_set_sensitive(cylinder_list.del, selected);
 871 }
 872
 873 static void row_activated_cb(GtkTreeView *tree_view,
 874                         GtkTreePath *path,
 875                         GtkTreeViewColumn *column,
 876                         GtkTreeModel *model)
 877 {
 878         edit_cb(NULL, tree_view);
 879 }
 880
 881 GtkWidget *cylinder_list_widget(void)
 882 {
 883         GtkListStore *model = cylinder_list.model;
 884         GtkWidget *tree_view;
 885         GtkTreeSelection *selection;
 886
 887         tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
 888         gtk_widget_set_can_focus(tree_view, FALSE);
 889
 890         g_signal_connect(tree_view, "row-activated", G_CALLBACK(row_activated_cb), model);
 891
 892         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
 893         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
 894         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), model);
 895
 896         g_object_set(G_OBJECT(tree_view), "headers-visible", TRUE,
 897                                           "enable-grid-lines", GTK_TREE_VIEW_GRID_LINES_BOTH,
 898                                           NULL);
 899
 900         tree_view_column(tree_view, CYL_DESC, "Type", NULL, ALIGN_LEFT | UNSORTABLE);
 901         tree_view_column(tree_view, CYL_SIZE, "Size", size_data_func, ALIGN_RIGHT | UNSORTABLE);
 902         tree_view_column(tree_view, CYL_WORKP, "MaxPress", pressure_data_func, ALIGN_RIGHT | UNSORTABLE);
 903         tree_view_column(tree_view, CYL_STARTP, "Start", pressure_data_func, ALIGN_RIGHT | UNSORTABLE);
 904         tree_view_column(tree_view, CYL_ENDP, "End", pressure_data_func, ALIGN_RIGHT | UNSORTABLE);
 905         tree_view_column(tree_view, CYL_O2, "O" UTF8_SUBSCRIPT_2 "%", percentage_data_func, ALIGN_RIGHT | UNSORTABLE);
 906         tree_view_column(tree_view, CYL_HE, "He%", percentage_data_func, ALIGN_RIGHT | UNSORTABLE);
 907         return tree_view;
 908 }
 909
 910 static GtkWidget *cylinder_list_create(void)
 911 {
 912         GtkListStore *model;
 913
 914         model = gtk_list_store_new(CYL_COLUMNS,
 915                 G_TYPE_STRING,          /* CYL_DESC: utf8 */
 916                 G_TYPE_INT,             /* CYL_SIZE: mliter */
 917                 G_TYPE_INT,             /* CYL_WORKP: mbar */
 918                 G_TYPE_INT,             /* CYL_STARTP: mbar */
 919                 G_TYPE_INT,             /* CYL_ENDP: mbar */
 920                 G_TYPE_INT,             /* CYL_O2: permille */
 921                 G_TYPE_INT              /* CYL_HE: permille */
 922                 );
 923         cylinder_list.model = model;
 924         return cylinder_list_widget();
 925 }
 926
 927 GtkWidget *equipment_widget(void)
 928 {
 929         GtkWidget *vbox, *hbox, *frame, *framebox, *tree_view;
 930         GtkWidget *add, *del, *edit;
 931
 932         vbox = gtk_vbox_new(FALSE, 3);
 933
 934         /*
 935          * We create the cylinder size model at startup, since
 936          * we're going to share it across all cylinders and all
 937          * dives. So if you add a new cylinder type in one dive,
 938          * it will show up when you edit the cylinder types for
 939          * another dive.
 940          */
 941         cylinder_model = create_tank_size_model();
 942
 943         tree_view = cylinder_list_create();
 944
 945         hbox = gtk_hbox_new(FALSE, 3);
 946         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 3);
 947
 948         frame = gtk_frame_new("Cylinders");
 949         gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 3);
 950
 951         framebox = gtk_vbox_new(FALSE, 3);
 952         gtk_container_add(GTK_CONTAINER(frame), framebox);
 953
 954         hbox = gtk_hbox_new(FALSE, 3);
 955         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 956
 957         gtk_box_pack_start(GTK_BOX(hbox), tree_view, TRUE, FALSE, 3);
 958
 959         hbox = gtk_hbox_new(TRUE, 3);
 960         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 961
 962         edit = gtk_button_new_from_stock(GTK_STOCK_EDIT);
 963         add = gtk_button_new_from_stock(GTK_STOCK_ADD);
 964         del = gtk_button_new_from_stock(GTK_STOCK_DELETE);
 965         gtk_box_pack_start(GTK_BOX(hbox), edit, FALSE, FALSE, 0);
 966         gtk_box_pack_start(GTK_BOX(hbox), add, FALSE, FALSE, 0);
 967         gtk_box_pack_start(GTK_BOX(hbox), del, FALSE, FALSE, 0);
 968
 969         cylinder_list.edit = edit;
 970         cylinder_list.add = add;
 971         cylinder_list.del = del;
 972
 973         g_signal_connect(edit, "clicked", G_CALLBACK(edit_cb), tree_view);
 974         g_signal_connect(add, "clicked", G_CALLBACK(add_cb), tree_view);
 975         g_signal_connect(del, "clicked", G_CALLBACK(del_cb), tree_view);
 976
 977         return vbox;
 978 }