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, *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         double o2;
 266
 267         /* Don't show uninitialized cylinder widgets */
 268         if (!cylinder->description)
 269                 return;
 270
 271         desc = cyl->type.description;
 272         if (!desc)
 273                 desc = "";
 274         ml = cyl->type.size.mliter;
 275         mbar = cyl->type.workingpressure.mbar;
 276         add_cylinder(cylinder, desc, ml, mbar);
 277
 278         set_cylinder_type_spinbuttons(cylinder,
 279                 cyl->type.size.mliter, cyl->type.workingpressure.mbar);
 280         set_cylinder_pressure_spinbuttons(cylinder, cyl);
 281         o2 = cyl->gasmix.o2.permille / 10.0;
 282         gtk_widget_set_sensitive(cylinder->o2, !!o2);
 283         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button), !!o2);
 284         if (!o2)
 285                 o2 = 21.0;
 286         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->o2), o2);
 287 }
 288
 289 int cylinder_none(cylinder_t *cyl)
 290 {
 291         return  !cyl->type.size.mliter &&
 292                 !cyl->type.workingpressure.mbar &&
 293                 !cyl->type.description &&
 294                 !cyl->gasmix.o2.permille &&
 295                 !cyl->gasmix.he.permille &&
 296                 !cyl->sample_start.mbar &&
 297                 !cyl->sample_end.mbar &&
 298                 !cyl->start.mbar &&
 299                 !cyl->end.mbar;
 300 }
 301
 302 static void set_one_cylinder(int index, cylinder_t *cyl, GtkListStore *model, GtkTreeIter *iter)
 303 {
 304         unsigned int start, end;
 305
 306         start = cyl->start.mbar ? : cyl->sample_start.mbar;
 307         end = cyl->end.mbar ? : cyl->sample_end.mbar;
 308         gtk_list_store_set(model, iter,
 309                 CYL_DESC, cyl->type.description ? : "",
 310                 CYL_SIZE, cyl->type.size.mliter,
 311                 CYL_WORKP, cyl->type.workingpressure.mbar,
 312                 CYL_STARTP, start,
 313                 CYL_ENDP, end,
 314                 CYL_O2, cyl->gasmix.o2.permille,
 315                 CYL_HE, cyl->gasmix.he.permille,
 316                 -1);
 317 }
 318
 319 void show_dive_equipment(struct dive *dive)
 320 {
 321         int i, max;
 322         GtkTreeIter iter;
 323         GtkListStore *model;
 324
 325         model = cylinder_list.model;
 326         gtk_list_store_clear(model);
 327         max = MAX_CYLINDERS;
 328         do {
 329                 cylinder_t *cyl = &dive->cylinder[max-1];
 330
 331                 if (!cylinder_none(cyl))
 332                         break;
 333         } while (--max);
 334
 335         cylinder_list.max_index = max;
 336
 337         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 338         gtk_widget_set_sensitive(cylinder_list.del, 0);
 339         gtk_widget_set_sensitive(cylinder_list.add, max < MAX_CYLINDERS);
 340
 341         for (i = 0; i < max; i++) {
 342                 cylinder_t *cyl = dive->cylinder+i;
 343
 344                 gtk_list_store_append(model, &iter);
 345                 set_one_cylinder(i, cyl, model, &iter);
 346         }
 347 }
 348
 349 static GtkWidget *create_spinbutton(GtkWidget *vbox, const char *name, double min, double max, double incr)
 350 {
 351         GtkWidget *frame, *hbox, *button;
 352
 353         frame = gtk_frame_new(name);
 354         gtk_box_pack_start(GTK_BOX(vbox), frame, TRUE, FALSE, 0);
 355
 356         hbox = gtk_hbox_new(FALSE, 3);
 357         gtk_container_add(GTK_CONTAINER(frame), hbox);
 358
 359         button = gtk_spin_button_new_with_range(min, max, incr);
 360         gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, FALSE, 0);
 361
 362         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 363
 364         return button;
 365 }
 366
 367 static void fill_cylinder_info(struct cylinder_widget *cylinder, cylinder_t *cyl, const char *desc,
 368                 double volume, double pressure, double start, double end, int o2)
 369 {
 370         int mbar, ml;
 371
 372         if (output_units.pressure == PSI) {
 373                 pressure = psi_to_bar(pressure);
 374                 start = psi_to_bar(start);
 375                 end = psi_to_bar(end);
 376         }
 377
 378         if (pressure && output_units.volume == CUFT) {
 379                 volume = cuft_to_l(volume);
 380                 volume /= bar_to_atm(pressure);
 381         }
 382
 383         ml = volume * 1000 + 0.5;
 384         mbar = pressure * 1000 + 0.5;
 385
 386         if (o2 < 211)
 387                 o2 = 0;
 388         cyl->type.description = desc;
 389         cyl->type.size.mliter = ml;
 390         cyl->type.workingpressure.mbar = mbar;
 391         cyl->start.mbar = start * 1000 + 0.5;
 392         cyl->end.mbar = end * 1000 + 0.5;
 393         cyl->gasmix.o2.permille = o2;
 394
 395         /*
 396          * Also, insert it into the model if it doesn't already exist
 397          */
 398         add_cylinder(cylinder, desc, ml, mbar);
 399 }
 400
 401 static void record_cylinder_changes(cylinder_t *cyl, struct cylinder_widget *cylinder)
 402 {
 403         const gchar *desc;
 404         GtkComboBox *box;
 405         double volume, pressure, start, end;
 406         int o2;
 407
 408         /* Ignore uninitialized cylinder widgets */
 409         box = cylinder->description;
 410         if (!box)
 411                 return;
 412
 413         desc = gtk_combo_box_get_active_text(box);
 414         volume = gtk_spin_button_get_value(cylinder->size);
 415         pressure = gtk_spin_button_get_value(cylinder->pressure);
 416         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->pressure_button))) {
 417                 start = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->start));
 418                 end = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->end));
 419         } else {
 420                 start = end = 0;
 421         }
 422         if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button)))
 423                 o2 = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->o2))*10 + 0.5;
 424         else
 425                 o2 = 0;
 426         fill_cylinder_info(cylinder, cyl, desc, volume, pressure, start, end, o2);
 427 }
 428
 429 /*
 430  * We hardcode the most common standard cylinders,
 431  * we should pick up any other names from the dive
 432  * logs directly.
 433  */
 434 static struct tank_info {
 435         const char *name;
 436         int size;       /* cuft if < 1000, otherwise mliter */
 437         int psi;        /* If zero, size is in mliter */
 438 } tank_info[100] = {
 439         /* Need an empty entry for the no-cylinder case */
 440         { "", 0, 0 },
 441
 442         /* Size-only metric cylinders */
 443         { "10.0 l", 10000 },
 444         { "11.1 l", 11100 },
 445
 446         /* Most common AL cylinders */
 447         { "AL50",   50, 3000 },
 448         { "AL63",   63, 3000 },
 449         { "AL72",   72, 3000 },
 450         { "AL80",   80, 3000 },
 451         { "AL100", 100, 3300 },
 452
 453         /* Somewhat common LP steel cylinders */
 454         { "LP85",   85, 2640 },
 455         { "LP95",   95, 2640 },
 456         { "LP108", 108, 2640 },
 457         { "LP121", 121, 2640 },
 458
 459         /* Somewhat common HP steel cylinders */
 460         { "HP65",   65, 3442 },
 461         { "HP80",   80, 3442 },
 462         { "HP100", 100, 3442 },
 463         { "HP119", 119, 3442 },
 464         { "HP130", 130, 3442 },
 465
 466         /* We'll fill in more from the dive log dynamically */
 467         { NULL, }
 468 };
 469
 470 static void fill_tank_list(GtkListStore *store)
 471 {
 472         GtkTreeIter iter;
 473         struct tank_info *info = tank_info;
 474
 475         while (info->name) {
 476                 int size = info->size;
 477                 int psi = info->psi;
 478                 int mbar = 0, ml = size;
 479
 480                 /* Is it in cuft and psi? */
 481                 if (psi) {
 482                         double bar = psi_to_bar(psi);
 483                         double airvolume = cuft_to_l(size) * 1000.0;
 484                         double atm = bar_to_atm(bar);
 485
 486                         ml = airvolume / atm + 0.5;
 487                         mbar = bar*1000 + 0.5;
 488                 }
 489
 490                 gtk_list_store_append(store, &iter);
 491                 gtk_list_store_set(store, &iter,
 492                         0, info->name,
 493                         1, ml,
 494                         2, mbar,
 495                         -1);
 496                 info++;
 497         }
 498 }
 499
 500 static void nitrox_cb(GtkToggleButton *button, gpointer data)
 501 {
 502         struct cylinder_widget *cylinder = data;
 503         int state;
 504
 505         state = gtk_toggle_button_get_active(button);
 506         gtk_widget_set_sensitive(cylinder->o2, state);
 507 }
 508
 509 static void pressure_cb(GtkToggleButton *button, gpointer data)
 510 {
 511         struct cylinder_widget *cylinder = data;
 512         int state;
 513
 514         state = gtk_toggle_button_get_active(button);
 515         gtk_widget_set_sensitive(cylinder->start, state);
 516         gtk_widget_set_sensitive(cylinder->end, state);
 517 }
 518
 519 static gboolean completion_cb(GtkEntryCompletion *widget, GtkTreeModel *model, GtkTreeIter *iter, struct cylinder_widget *cylinder)
 520 {
 521         const char *desc;
 522         unsigned int ml, mbar;
 523
 524         gtk_tree_model_get(model, iter, CYL_DESC, &desc, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 525         add_cylinder(cylinder, desc, ml, mbar);
 526         return TRUE;
 527 }
 528
 529 static void cylinder_activate_cb(GtkComboBox *combo_box, gpointer data)
 530 {
 531         struct cylinder_widget *cylinder = data;
 532         cylinder_cb(cylinder->description, data);
 533 }
 534
 535 static void cylinder_widget(GtkWidget *vbox, struct cylinder_widget *cylinder, GtkListStore *model)
 536 {
 537         GtkWidget *frame, *hbox;
 538         GtkEntry *entry;
 539         GtkEntryCompletion *completion;
 540         GtkWidget *widget;
 541
 542         /*
 543          * Cylinder type: description, size and
 544          * working pressure
 545          */
 546         frame = gtk_frame_new("Cylinder");
 547
 548         hbox = gtk_hbox_new(FALSE, 3);
 549         gtk_container_add(GTK_CONTAINER(frame), hbox);
 550
 551         widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
 552         gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
 553
 554         cylinder->description = GTK_COMBO_BOX(widget);
 555         g_signal_connect(widget, "changed", G_CALLBACK(cylinder_cb), cylinder);
 556
 557         entry = GTK_ENTRY(GTK_BIN(widget)->child);
 558         g_signal_connect(entry, "activate", G_CALLBACK(cylinder_activate_cb), cylinder);
 559
 560         completion = gtk_entry_completion_new();
 561         gtk_entry_completion_set_text_column(completion, 0);
 562         gtk_entry_completion_set_model(completion, GTK_TREE_MODEL(model));
 563         g_signal_connect(completion, "match-selected", G_CALLBACK(completion_cb), cylinder);
 564         gtk_entry_set_completion(entry, completion);
 565
 566         hbox = gtk_hbox_new(FALSE, 3);
 567         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 568         gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, TRUE, 0);
 569
 570         widget = create_spinbutton(hbox, "Size", 0, 300, 0.1);
 571         cylinder->size = GTK_SPIN_BUTTON(widget);
 572
 573         widget = create_spinbutton(hbox, "Pressure", 0, 5000, 1);
 574         cylinder->pressure = GTK_SPIN_BUTTON(widget);
 575
 576         /*
 577          * Cylinder start/end pressures
 578          */
 579         hbox = gtk_hbox_new(FALSE, 3);
 580         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 581
 582         cylinder->pressure_button = gtk_check_button_new();
 583         gtk_box_pack_start(GTK_BOX(hbox), cylinder->pressure_button, FALSE, FALSE, 3);
 584         g_signal_connect(cylinder->pressure_button, "toggled", G_CALLBACK(pressure_cb), cylinder);
 585
 586         widget = create_spinbutton(hbox, "Start Pressure", 0, 5000, 1);
 587         cylinder->start = widget;
 588
 589         widget = create_spinbutton(hbox, "End Pressure", 0, 5000, 1);
 590         cylinder->end = widget;
 591
 592         /*
 593          * Cylinder gas mix: Air, Nitrox or Trimix
 594          */
 595         hbox = gtk_hbox_new(FALSE, 3);
 596         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 597
 598         widget = create_spinbutton(hbox, "Nitrox", 21, 100, 0.1);
 599         cylinder->o2 = widget;
 600         cylinder->gasmix_button = gtk_check_button_new();
 601         gtk_box_pack_start(GTK_BOX(gtk_widget_get_parent(cylinder->o2)),
 602                 cylinder->gasmix_button, FALSE, FALSE, 3);
 603         g_signal_connect(cylinder->gasmix_button, "toggled", G_CALLBACK(nitrox_cb), cylinder);
 604
 605         gtk_spin_button_set_range(GTK_SPIN_BUTTON(cylinder->o2), 21.0, 100.0);
 606 }
 607
 608 static int edit_cylinder_dialog(int index, cylinder_t *cyl)
 609 {
 610         int success;
 611         GtkWidget *dialog, *vbox;
 612         struct cylinder_widget cylinder;
 613         struct dive *dive;
 614
 615         cylinder.index = index;
 616         cylinder.changed = 0;
 617
 618         dive = current_dive;
 619         if (!dive)
 620                 return 0;
 621         *cyl = dive->cylinder[index];
 622
 623         dialog = gtk_dialog_new_with_buttons("Cylinder",
 624                 GTK_WINDOW(main_window),
 625                 GTK_DIALOG_DESTROY_WITH_PARENT,
 626                 GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
 627                 GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
 628                 NULL);
 629
 630         vbox = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
 631         cylinder_widget(vbox, &cylinder, cylinder_model);
 632
 633         show_cylinder(cyl, &cylinder);
 634
 635         gtk_widget_show_all(dialog);
 636         success = gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT;
 637         if (success) {
 638                 record_cylinder_changes(cyl, &cylinder);
 639                 dive->cylinder[index] = *cyl;
 640                 mark_divelist_changed(TRUE);
 641                 update_cylinder_related_info(dive);
 642                 flush_divelist(dive);
 643         }
 644
 645         gtk_widget_destroy(dialog);
 646
 647         return success;
 648 }
 649
 650 static int get_model_index(GtkListStore *model, GtkTreeIter *iter)
 651 {
 652         int *p, index;
 653         GtkTreePath *path;
 654
 655         path = gtk_tree_model_get_path(GTK_TREE_MODEL(model), iter);
 656         p = gtk_tree_path_get_indices(path);
 657         index = p ? *p : 0;
 658         gtk_tree_path_free(path);
 659         return index;
 660 }
 661
 662 static void edit_cb(GtkButton *button, GtkTreeView *tree_view)
 663 {
 664         int index;
 665         GtkTreeIter iter;
 666         GtkListStore *model = cylinder_list.model;
 667         GtkTreeSelection *selection;
 668         cylinder_t cyl;
 669
 670         selection = gtk_tree_view_get_selection(tree_view);
 671
 672         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 673         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 674                 return;
 675
 676         index = get_model_index(model, &iter);
 677         if (!edit_cylinder_dialog(index, &cyl))
 678                 return;
 679
 680         set_one_cylinder(index, &cyl, model, &iter);
 681         repaint_dive();
 682 }
 683
 684 static void add_cb(GtkButton *button, GtkTreeView *tree_view)
 685 {
 686         int index = cylinder_list.max_index;
 687         GtkTreeIter iter;
 688         GtkListStore *model = cylinder_list.model;
 689         GtkTreeSelection *selection;
 690         cylinder_t cyl;
 691
 692         if (!edit_cylinder_dialog(index, &cyl))
 693                 return;
 694
 695         gtk_list_store_append(model, &iter);
 696         set_one_cylinder(index, &cyl, model, &iter);
 697
 698         selection = gtk_tree_view_get_selection(tree_view);
 699         gtk_tree_selection_select_iter(selection, &iter);
 700
 701         cylinder_list.max_index++;
 702         gtk_widget_set_sensitive(cylinder_list.add, cylinder_list.max_index < MAX_CYLINDERS);
 703 }
 704
 705 static void del_cb(GtkButton *button, GtkTreeView *tree_view)
 706 {
 707         int index, nr;
 708         GtkTreeIter iter;
 709         GtkListStore *model = cylinder_list.model;
 710         GtkTreeSelection *selection;
 711         struct dive *dive;
 712         cylinder_t *cyl;
 713
 714         selection = gtk_tree_view_get_selection(tree_view);
 715
 716         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 717         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 718                 return;
 719
 720         index = get_model_index(model, &iter);
 721
 722         dive = current_dive;
 723         if (!dive)
 724                 return;
 725         cyl = dive->cylinder + index;
 726         nr = cylinder_list.max_index - index - 1;
 727
 728         gtk_list_store_remove(model, &iter);
 729
 730         cylinder_list.max_index--;
 731         memmove(cyl, cyl+1, nr*sizeof(*cyl));
 732         memset(cyl+nr, 0, sizeof(*cyl));
 733
 734         mark_divelist_changed(TRUE);
 735         flush_divelist(dive);
 736
 737         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 738         gtk_widget_set_sensitive(cylinder_list.del, 0);
 739         gtk_widget_set_sensitive(cylinder_list.add, 1);
 740 }
 741
 742 static GtkListStore *create_tank_size_model(void)
 743 {
 744         GtkListStore *model;
 745
 746         model = gtk_list_store_new(3,
 747                 G_TYPE_STRING,          /* Tank name */
 748                 G_TYPE_INT,             /* Tank size in mliter */
 749                 G_TYPE_INT,             /* Tank working pressure in mbar */
 750                 -1);
 751
 752         fill_tank_list(model);
 753         return model;
 754 }
 755
 756 static void size_data_func(GtkTreeViewColumn *col,
 757                            GtkCellRenderer *renderer,
 758                            GtkTreeModel *model,
 759                            GtkTreeIter *iter,
 760                            gpointer data)
 761 {
 762         int ml, mbar;
 763         double size, pressure;
 764         char buffer[10];
 765
 766         gtk_tree_model_get(model, iter, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 767         convert_volume_pressure(ml, mbar, &size, &pressure);
 768         if (size)
 769                 snprintf(buffer, sizeof(buffer), "%.1f", size);
 770         else
 771                 strcpy(buffer, "unkn");
 772         g_object_set(renderer, "text", buffer, NULL);
 773 }
 774
 775 static void pressure_data_func(GtkTreeViewColumn *col,
 776                            GtkCellRenderer *renderer,
 777                            GtkTreeModel *model,
 778                            GtkTreeIter *iter,
 779                            gpointer data)
 780 {
 781         int index = (long)data;
 782         int mbar, decimals;
 783         double pressure;
 784         char buffer[10];
 785
 786         gtk_tree_model_get(model, iter, index, &mbar, -1);
 787         decimals = convert_pressure(mbar, &pressure);
 788         if (mbar)
 789                 snprintf(buffer, sizeof(buffer), "%.*f", decimals, pressure);
 790         else
 791                 *buffer = 0;
 792         g_object_set(renderer, "text", buffer, NULL);
 793 }
 794
 795 static void percentage_data_func(GtkTreeViewColumn *col,
 796                            GtkCellRenderer *renderer,
 797                            GtkTreeModel *model,
 798                            GtkTreeIter *iter,
 799                            gpointer data)
 800 {
 801         int index = (long)data;
 802         int permille;
 803         char buffer[10];
 804
 805         gtk_tree_model_get(model, iter, index, &permille, -1);
 806         if (permille)
 807                 snprintf(buffer, sizeof(buffer), "%.1f%%", permille / 10.0);
 808         else
 809                 *buffer = 0;
 810         g_object_set(renderer, "text", buffer, NULL);
 811 }
 812
 813 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
 814 {
 815         GtkTreeIter iter;
 816         int selected;
 817
 818         selected = gtk_tree_selection_get_selected(selection, NULL, &iter);
 819         gtk_widget_set_sensitive(cylinder_list.edit, selected);
 820         gtk_widget_set_sensitive(cylinder_list.del, selected);
 821 }
 822
 823 static void row_activated_cb(GtkTreeView *tree_view,
 824                         GtkTreePath *path,
 825                         GtkTreeViewColumn *column,
 826                         GtkTreeModel *model)
 827 {
 828         edit_cb(NULL, tree_view);
 829 }
 830
 831 GtkWidget *cylinder_list_widget(void)
 832 {
 833         GtkListStore *model = cylinder_list.model;
 834         GtkWidget *tree_view;
 835         GtkTreeSelection *selection;
 836
 837         tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
 838         gtk_widget_set_can_focus(tree_view, FALSE);
 839
 840         g_signal_connect(tree_view, "row-activated", G_CALLBACK(row_activated_cb), model);
 841
 842         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
 843         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
 844         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), model);
 845
 846         g_object_set(G_OBJECT(tree_view), "headers-visible", TRUE,
 847                                           "enable-grid-lines", GTK_TREE_VIEW_GRID_LINES_BOTH,
 848                                           NULL);
 849
 850         tree_view_column(tree_view, CYL_DESC, "Type", NULL, PANGO_ALIGN_LEFT, TRUE);
 851         tree_view_column(tree_view, CYL_SIZE, "Size", size_data_func, PANGO_ALIGN_RIGHT, TRUE);
 852         tree_view_column(tree_view, CYL_WORKP, "MaxPress", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 853         tree_view_column(tree_view, CYL_STARTP, "Start", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 854         tree_view_column(tree_view, CYL_ENDP, "End", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 855         tree_view_column(tree_view, CYL_O2, "O" UTF8_SUBSCRIPT_2 "%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 856         tree_view_column(tree_view, CYL_HE, "He%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 857         return tree_view;
 858 }
 859
 860 static GtkWidget *cylinder_list_create(void)
 861 {
 862         GtkListStore *model;
 863
 864         model = gtk_list_store_new(CYL_COLUMNS,
 865                 G_TYPE_STRING,          /* CYL_DESC: utf8 */
 866                 G_TYPE_INT,             /* CYL_SIZE: mliter */
 867                 G_TYPE_INT,             /* CYL_WORKP: mbar */
 868                 G_TYPE_INT,             /* CYL_STARTP: mbar */
 869                 G_TYPE_INT,             /* CYL_ENDP: mbar */
 870                 G_TYPE_INT,             /* CYL_O2: permille */
 871                 G_TYPE_INT              /* CYL_HE: permille */
 872                 );
 873         cylinder_list.model = model;
 874         return cylinder_list_widget();
 875 }
 876
 877 GtkWidget *equipment_widget(void)
 878 {
 879         GtkWidget *vbox, *hbox, *frame, *framebox, *tree_view;
 880         GtkWidget *add, *del, *edit;
 881
 882         vbox = gtk_vbox_new(FALSE, 3);
 883
 884         /*
 885          * We create the cylinder size model at startup, since
 886          * we're going to share it across all cylinders and all
 887          * dives. So if you add a new cylinder type in one dive,
 888          * it will show up when you edit the cylinder types for
 889          * another dive.
 890          */
 891         cylinder_model = create_tank_size_model();
 892
 893         tree_view = cylinder_list_create();
 894
 895         hbox = gtk_hbox_new(FALSE, 3);
 896         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 3);
 897
 898         frame = gtk_frame_new("Cylinders");
 899         gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 3);
 900
 901         framebox = gtk_vbox_new(FALSE, 3);
 902         gtk_container_add(GTK_CONTAINER(frame), framebox);
 903
 904         hbox = gtk_hbox_new(FALSE, 3);
 905         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 906
 907         gtk_box_pack_start(GTK_BOX(hbox), tree_view, TRUE, FALSE, 3);
 908
 909         hbox = gtk_hbox_new(TRUE, 3);
 910         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 911
 912         edit = gtk_button_new_from_stock(GTK_STOCK_EDIT);
 913         add = gtk_button_new_from_stock(GTK_STOCK_ADD);
 914         del = gtk_button_new_from_stock(GTK_STOCK_DELETE);
 915         gtk_box_pack_start(GTK_BOX(hbox), edit, FALSE, FALSE, 0);
 916         gtk_box_pack_start(GTK_BOX(hbox), add, FALSE, FALSE, 0);
 917         gtk_box_pack_start(GTK_BOX(hbox), del, FALSE, FALSE, 0);
 918
 919         cylinder_list.edit = edit;
 920         cylinder_list.add = add;
 921         cylinder_list.del = del;
 922
 923         g_signal_connect(edit, "clicked", G_CALLBACK(edit_cb), tree_view);
 924         g_signal_connect(add, "clicked", G_CALLBACK(add_cb), tree_view);
 925         g_signal_connect(del, "clicked", G_CALLBACK(del_cb), tree_view);
 926
 927         return vbox;
 928 }