equipment.c

   1 /* equipment.c */
   2 /* creates the UI for the equipment page -
   3  * controlled through the following interfaces:
   4  *
   5  * void show_dive_equipment(struct dive *dive)
   6  * void flush_dive_equipment_changes(struct dive *dive)
   7  *
   8  * called from gtk-ui:
   9  * GtkWidget *equipment_widget(void)
  10  */
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <stdlib.h>
  14 #include <stdarg.h>
  15 #include <time.h>
  16
  17 #include "dive.h"
  18 #include "display.h"
  19 #include "display-gtk.h"
  20 #include "divelist.h"
  21
  22 static GtkListStore *cylinder_model;
  23
  24 enum {
  25         CYL_DESC,
  26         CYL_SIZE,
  27         CYL_WORKP,
  28         CYL_STARTP,
  29         CYL_ENDP,
  30         CYL_O2,
  31         CYL_HE,
  32         CYL_COLUMNS
  33 };
  34
  35 static struct {
  36         int max_index;
  37         GtkListStore *model;
  38         GtkWidget *tree_view;
  39         GtkWidget *edit, *add, *del;
  40         GtkTreeViewColumn *desc, *size, *workp, *startp, *endp, *o2, *he;
  41 } cylinder_list;
  42
  43 struct cylinder_widget {
  44         int index, changed;
  45         const char *name;
  46         GtkWidget *hbox;
  47         GtkComboBox *description;
  48         GtkSpinButton *size, *pressure, *start, *end;
  49         GtkWidget *o2, *gasmix_button;
  50 };
  51
  52 static int convert_pressure(int mbar, double *p)
  53 {
  54         int decimals = 1;
  55         double pressure;
  56
  57         pressure = mbar / 1000.0;
  58         if (mbar) {
  59                 if (output_units.pressure == PSI) {
  60                         pressure *= 14.5037738; /* Bar to PSI */
  61                         decimals = 0;
  62                 }
  63         }
  64         *p = pressure;
  65         return decimals;
  66 }
  67
  68 static int convert_volume_pressure(int ml, int mbar, double *v, double *p)
  69 {
  70         int decimals = 1;
  71         double volume, pressure;
  72
  73         volume = ml / 1000.0;
  74         pressure = mbar / 1000.0;
  75         if (mbar) {
  76                 if (output_units.volume == CUFT) {
  77                         volume /= 28.3168466;   /* Liters to cuft */
  78                         volume *= pressure / 1.01325;
  79                 }
  80                 if (output_units.pressure == PSI) {
  81                         pressure *= 14.5037738; /* Bar to PSI */
  82                         decimals = 0;
  83                 }
  84         }
  85         *v = volume;
  86         *p = pressure;
  87         return decimals;
  88 }
  89
  90 static void set_cylinder_type_spinbuttons(struct cylinder_widget *cylinder, int ml, int mbar)
  91 {
  92         double volume, pressure;
  93
  94         convert_volume_pressure(ml, mbar, &volume, &pressure);
  95         gtk_spin_button_set_value(cylinder->size, volume);
  96         gtk_spin_button_set_value(cylinder->pressure, pressure);
  97 }
  98
  99 static void set_cylinder_pressure_spinbuttons(struct cylinder_widget *cylinder, int start, int end)
 100 {
 101         double pressure;
 102
 103         convert_pressure(start, &pressure);
 104         gtk_spin_button_set_value(cylinder->start, pressure);
 105         convert_pressure(end, &pressure);
 106         gtk_spin_button_set_value(cylinder->end, pressure);
 107 }
 108
 109 /*
 110  * The gtk_tree_model_foreach() interface is bad. It could have
 111  * returned whether the callback ever returned true
 112  */
 113 static GtkTreeIter *found_match = NULL;
 114 static GtkTreeIter match_iter;
 115
 116 static gboolean match_cylinder(GtkTreeModel *model,
 117                                 GtkTreePath *path,
 118                                 GtkTreeIter *iter,
 119                                 gpointer data)
 120 {
 121         int match;
 122         gchar *name;
 123         const char *desc = data;
 124
 125         gtk_tree_model_get(model, iter, 0, &name, -1);
 126         match = !strcmp(desc, name);
 127         g_free(name);
 128         if (match) {
 129                 match_iter = *iter;
 130                 found_match = &match_iter;
 131         }
 132         return match;
 133 }
 134
 135 static int get_active_cylinder(GtkComboBox *combo_box, GtkTreeIter *iter)
 136 {
 137         char *desc;
 138
 139         if (gtk_combo_box_get_active_iter(combo_box, iter))
 140                 return TRUE;
 141
 142         desc = gtk_combo_box_get_active_text(combo_box);
 143
 144         found_match = NULL;
 145         gtk_tree_model_foreach(GTK_TREE_MODEL(cylinder_model), match_cylinder, (void *)desc);
 146
 147         g_free(desc);
 148         if (!found_match)
 149                 return FALSE;
 150
 151         *iter = *found_match;
 152         gtk_combo_box_set_active_iter(combo_box, iter);
 153         return TRUE;
 154 }
 155
 156 static void cylinder_cb(GtkComboBox *combo_box, gpointer data)
 157 {
 158         GtkTreeIter iter;
 159         GtkTreeModel *model = gtk_combo_box_get_model(combo_box);
 160         int ml, mbar;
 161         struct cylinder_widget *cylinder = data;
 162         cylinder_t *cyl = current_dive->cylinder + cylinder->index;
 163
 164         /* Did the user set it to some non-standard value? */
 165         if (!get_active_cylinder(combo_box, &iter)) {
 166                 cylinder->changed = 1;
 167                 return;
 168         }
 169
 170         /*
 171          * We get "change" signal callbacks just because we set
 172          * the description by hand. Whatever. So ignore them if
 173          * they are no-ops.
 174          */
 175         if (!cylinder->changed && cyl->type.description) {
 176                 int same;
 177                 char *desc = gtk_combo_box_get_active_text(combo_box);
 178
 179                 same = !strcmp(desc, cyl->type.description);
 180                 g_free(desc);
 181                 if (same)
 182                         return;
 183         }
 184         cylinder->changed = 1;
 185
 186         gtk_tree_model_get(model, &iter,
 187                 CYL_SIZE, &ml,
 188                 CYL_WORKP, &mbar,
 189                 -1);
 190
 191         set_cylinder_type_spinbuttons(cylinder, ml, mbar);
 192 }
 193
 194 static GtkTreeIter *add_cylinder_type(const char *desc, int ml, int mbar, GtkTreeIter *iter)
 195 {
 196         GtkTreeModel *model;
 197
 198         /* Don't even bother adding stuff without a size */
 199         if (!ml)
 200                 return NULL;
 201
 202         found_match = NULL;
 203         model = GTK_TREE_MODEL(cylinder_model);
 204         gtk_tree_model_foreach(model, match_cylinder, (void *)desc);
 205
 206         if (!found_match) {
 207                 GtkListStore *store = GTK_LIST_STORE(model);
 208
 209                 gtk_list_store_append(store, iter);
 210                 gtk_list_store_set(store, iter,
 211                         0, desc,
 212                         1, ml,
 213                         2, mbar,
 214                         -1);
 215                 return iter;
 216         }
 217         return found_match;
 218 }
 219
 220 /*
 221  * When adding a dive, we'll add all the pre-existing cylinder
 222  * information from that dive to our cylinder model.
 223  */
 224 void add_cylinder_description(cylinder_type_t *type)
 225 {
 226         GtkTreeIter iter;
 227         const char *desc;
 228         unsigned int size, workp;
 229
 230         desc = type->description;
 231         if (!desc)
 232                 return;
 233         size = type->size.mliter;
 234         workp = type->workingpressure.mbar;
 235         add_cylinder_type(desc, size, workp, &iter);
 236 }
 237
 238 static void add_cylinder(struct cylinder_widget *cylinder, const char *desc, int ml, int mbar)
 239 {
 240         GtkTreeIter iter, *match;
 241
 242         cylinder->name = desc;
 243         match = add_cylinder_type(desc, ml, mbar, &iter);
 244         if (match)
 245                 gtk_combo_box_set_active_iter(cylinder->description, match);
 246 }
 247
 248 static void show_cylinder(cylinder_t *cyl, struct cylinder_widget *cylinder)
 249 {
 250         const char *desc;
 251         int ml, mbar;
 252         double o2;
 253
 254         /* Don't show uninitialized cylinder widgets */
 255         if (!cylinder->description)
 256                 return;
 257
 258         desc = cyl->type.description;
 259         if (!desc)
 260                 desc = "";
 261         ml = cyl->type.size.mliter;
 262         mbar = cyl->type.workingpressure.mbar;
 263         add_cylinder(cylinder, desc, ml, mbar);
 264
 265         set_cylinder_type_spinbuttons(cylinder,
 266                 cyl->type.size.mliter, cyl->type.workingpressure.mbar);
 267         set_cylinder_pressure_spinbuttons(cylinder,
 268                 cyl->start.mbar, cyl->end.mbar);
 269         o2 = cyl->gasmix.o2.permille / 10.0;
 270         gtk_widget_set_sensitive(cylinder->o2, !!o2);
 271         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button), !!o2);
 272         if (!o2)
 273                 o2 = 21.0;
 274         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->o2), o2);
 275 }
 276
 277 static int cyl_nothing(cylinder_t *cyl)
 278 {
 279         return  !cyl->type.size.mliter &&
 280                 !cyl->type.workingpressure.mbar &&
 281                 !cyl->type.description &&
 282                 !cyl->gasmix.o2.permille &&
 283                 !cyl->gasmix.he.permille &&
 284                 !cyl->start.mbar &&
 285                 !cyl->end.mbar;
 286 }
 287
 288 static void set_one_cylinder(int index, cylinder_t *cyl, GtkListStore *model, GtkTreeIter *iter)
 289 {
 290         gtk_list_store_set(model, iter,
 291                 CYL_DESC, cyl->type.description ? : "",
 292                 CYL_SIZE, cyl->type.size.mliter,
 293                 CYL_WORKP, cyl->type.workingpressure.mbar,
 294                 CYL_STARTP, cyl->start.mbar,
 295                 CYL_ENDP, cyl->end.mbar,
 296                 CYL_O2, cyl->gasmix.o2.permille,
 297                 CYL_HE, cyl->gasmix.he.permille,
 298                 -1);
 299 }
 300
 301 void show_dive_equipment(struct dive *dive)
 302 {
 303         int i, max;
 304         GtkTreeIter iter;
 305         GtkListStore *model;
 306
 307         model = cylinder_list.model;
 308         gtk_list_store_clear(model);
 309         max = MAX_CYLINDERS;
 310         do {
 311                 cylinder_t *cyl = &dive->cylinder[max-1];
 312
 313                 if (!cyl_nothing(cyl))
 314                         break;
 315         } while (--max);
 316
 317         cylinder_list.max_index = max;
 318
 319         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 320         gtk_widget_set_sensitive(cylinder_list.del, 0);
 321         gtk_widget_set_sensitive(cylinder_list.add, max < MAX_CYLINDERS);
 322
 323         for (i = 0; i < max; i++) {
 324                 cylinder_t *cyl = dive->cylinder+i;
 325
 326                 gtk_list_store_append(model, &iter);
 327                 set_one_cylinder(i, cyl, model, &iter);
 328         }
 329 }
 330
 331 static GtkWidget *create_spinbutton(GtkWidget *vbox, const char *name, double min, double max, double incr)
 332 {
 333         GtkWidget *frame, *hbox, *button;
 334
 335         frame = gtk_frame_new(name);
 336         gtk_box_pack_start(GTK_BOX(vbox), frame, TRUE, FALSE, 0);
 337
 338         hbox = gtk_hbox_new(FALSE, 3);
 339         gtk_container_add(GTK_CONTAINER(frame), hbox);
 340
 341         button = gtk_spin_button_new_with_range(min, max, incr);
 342         gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, FALSE, 0);
 343
 344         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 345
 346         return button;
 347 }
 348
 349 static void fill_cylinder_info(struct cylinder_widget *cylinder, cylinder_t *cyl, const char *desc,
 350                 double volume, double pressure, double start, double end, int o2)
 351 {
 352         int mbar, ml;
 353
 354         if (output_units.pressure == PSI) {
 355                 pressure /= 14.5037738;
 356                 start /= 14.5037738;
 357                 end /= 14.5037738;
 358         }
 359
 360         if (pressure && output_units.volume == CUFT) {
 361                 volume *= 28.3168466;   /* CUFT to liter */
 362                 volume /= pressure / 1.01325;
 363         }
 364
 365         ml = volume * 1000 + 0.5;
 366         mbar = pressure * 1000 + 0.5;
 367
 368         if (o2 < 211)
 369                 o2 = 0;
 370         cyl->type.description = desc;
 371         cyl->type.size.mliter = ml;
 372         cyl->type.workingpressure.mbar = mbar;
 373         cyl->start.mbar = start * 1000 + 0.5;
 374         cyl->end.mbar = end * 1000 + 0.5;
 375         cyl->gasmix.o2.permille = o2;
 376
 377         /*
 378          * Also, insert it into the model if it doesn't already exist
 379          */
 380         add_cylinder(cylinder, desc, ml, mbar);
 381 }
 382
 383 static void record_cylinder_changes(cylinder_t *cyl, struct cylinder_widget *cylinder)
 384 {
 385         const gchar *desc;
 386         GtkComboBox *box;
 387         double volume, pressure, start, end;
 388         int o2;
 389
 390         /* Ignore uninitialized cylinder widgets */
 391         box = cylinder->description;
 392         if (!box)
 393                 return;
 394
 395         desc = gtk_combo_box_get_active_text(box);
 396         volume = gtk_spin_button_get_value(cylinder->size);
 397         pressure = gtk_spin_button_get_value(cylinder->pressure);
 398         start = gtk_spin_button_get_value(cylinder->start);
 399         end = gtk_spin_button_get_value(cylinder->end);
 400         o2 = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->o2))*10 + 0.5;
 401         if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button)))
 402                 o2 = 0;
 403         fill_cylinder_info(cylinder, cyl, desc, volume, pressure, start, end, o2);
 404 }
 405
 406 void flush_dive_equipment_changes(struct dive *dive)
 407 {
 408         /* We do nothing: we require the "Ok" button press */
 409 }
 410
 411 /*
 412  * We hardcode the most common standard cylinders,
 413  * we should pick up any other names from the dive
 414  * logs directly.
 415  */
 416 static struct tank_info {
 417         const char *name;
 418         int size;       /* cuft if < 1000, otherwise mliter */
 419         int psi;        /* If zero, size is in mliter */
 420 } tank_info[100] = {
 421         /* Need an empty entry for the no-cylinder case */
 422         { "", 0, 0 },
 423
 424         /* Size-only metric cylinders */
 425         { "10.0 l", 10000 },
 426         { "11.1 l", 11100 },
 427
 428         /* Most common AL cylinders */
 429         { "AL50",   50, 3000 },
 430         { "AL63",   63, 3000 },
 431         { "AL72",   72, 3000 },
 432         { "AL80",   80, 3000 },
 433         { "AL100", 100, 3300 },
 434
 435         /* Somewhat common LP steel cylinders */
 436         { "LP85",   85, 2640 },
 437         { "LP95",   95, 2640 },
 438         { "LP108", 108, 2640 },
 439         { "LP121", 121, 2640 },
 440
 441         /* Somewhat common HP steel cylinders */
 442         { "HP65",   65, 3442 },
 443         { "HP80",   80, 3442 },
 444         { "HP100", 100, 3442 },
 445         { "HP119", 119, 3442 },
 446         { "HP130", 130, 3442 },
 447
 448         /* We'll fill in more from the dive log dynamically */
 449         { NULL, }
 450 };
 451
 452 static void fill_tank_list(GtkListStore *store)
 453 {
 454         GtkTreeIter iter;
 455         struct tank_info *info = tank_info;
 456
 457         while (info->name) {
 458                 int size = info->size;
 459                 int psi = info->psi;
 460                 int mbar = 0, ml = size;
 461
 462                 /* Is it in cuft and psi? */
 463                 if (psi) {
 464                         double bar = 0.0689475729 * psi;
 465                         double airvolume = 28316.8466 * size;
 466                         double atm = bar / 1.01325;
 467
 468                         ml = airvolume / atm + 0.5;
 469                         mbar = bar*1000 + 0.5;
 470                 }
 471
 472                 gtk_list_store_append(store, &iter);
 473                 gtk_list_store_set(store, &iter,
 474                         0, info->name,
 475                         1, ml,
 476                         2, mbar,
 477                         -1);
 478                 info++;
 479         }
 480 }
 481
 482 static void nitrox_cb(GtkToggleButton *button, gpointer data)
 483 {
 484         struct cylinder_widget *cylinder = data;
 485         int state;
 486
 487         state = gtk_toggle_button_get_active(button);
 488         gtk_widget_set_sensitive(cylinder->o2, state);
 489 }
 490
 491 static gboolean completion_cb(GtkEntryCompletion *widget, GtkTreeModel *model, GtkTreeIter *iter, struct cylinder_widget *cylinder)
 492 {
 493         const char *desc;
 494         unsigned int ml, mbar;
 495
 496         gtk_tree_model_get(model, iter, CYL_DESC, &desc, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 497         add_cylinder(cylinder, desc, ml, mbar);
 498         return TRUE;
 499 }
 500
 501 static void cylinder_activate_cb(GtkComboBox *combo_box, gpointer data)
 502 {
 503         struct cylinder_widget *cylinder = data;
 504         cylinder_cb(cylinder->description, data);
 505 }
 506
 507 static void cylinder_widget(GtkWidget *vbox, struct cylinder_widget *cylinder, GtkListStore *model)
 508 {
 509         GtkWidget *frame, *hbox;
 510         GtkEntry *entry;
 511         GtkEntryCompletion *completion;
 512         GtkWidget *widget;
 513
 514         /*
 515          * Cylinder type: description, size and
 516          * working pressure
 517          */
 518         frame = gtk_frame_new("Cylinder");
 519
 520         hbox = gtk_hbox_new(FALSE, 3);
 521         gtk_container_add(GTK_CONTAINER(frame), hbox);
 522
 523         widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
 524         gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
 525
 526         cylinder->description = GTK_COMBO_BOX(widget);
 527         g_signal_connect(widget, "changed", G_CALLBACK(cylinder_cb), cylinder);
 528
 529         entry = GTK_ENTRY(GTK_BIN(widget)->child);
 530         g_signal_connect(entry, "activate", G_CALLBACK(cylinder_activate_cb), cylinder);
 531
 532         completion = gtk_entry_completion_new();
 533         gtk_entry_completion_set_text_column(completion, 0);
 534         gtk_entry_completion_set_model(completion, GTK_TREE_MODEL(model));
 535         g_signal_connect(completion, "match-selected", G_CALLBACK(completion_cb), cylinder);
 536         gtk_entry_set_completion(entry, completion);
 537
 538         hbox = gtk_hbox_new(FALSE, 3);
 539         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 540         gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, TRUE, 0);
 541
 542         widget = create_spinbutton(hbox, "Size", 0, 300, 0.1);
 543         cylinder->size = GTK_SPIN_BUTTON(widget);
 544
 545         widget = create_spinbutton(hbox, "Pressure", 0, 5000, 1);
 546         cylinder->pressure = GTK_SPIN_BUTTON(widget);
 547
 548         /*
 549          * Cylinder start/end pressures
 550          */
 551         hbox = gtk_hbox_new(FALSE, 3);
 552         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 553
 554         widget = create_spinbutton(hbox, "Start Pressure", 0, 5000, 1);
 555         cylinder->start = GTK_SPIN_BUTTON(widget);
 556
 557         widget = create_spinbutton(hbox, "End Pressure", 0, 5000, 1);
 558         cylinder->end = GTK_SPIN_BUTTON(widget);
 559
 560         /*
 561          * Cylinder gas mix: Air, Nitrox or Trimix
 562          */
 563         hbox = gtk_hbox_new(FALSE, 3);
 564         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 565
 566         widget = create_spinbutton(hbox, "Nitrox", 21, 100, 0.1);
 567         cylinder->o2 = widget;
 568         cylinder->gasmix_button = gtk_check_button_new();
 569         gtk_box_pack_start(GTK_BOX(gtk_widget_get_parent(cylinder->o2)),
 570                 cylinder->gasmix_button, FALSE, FALSE, 3);
 571         g_signal_connect(cylinder->gasmix_button, "toggled", G_CALLBACK(nitrox_cb), cylinder);
 572
 573         gtk_spin_button_set_range(GTK_SPIN_BUTTON(cylinder->o2), 21.0, 100.0);
 574 }
 575
 576 static int edit_cylinder_dialog(int index, cylinder_t *cyl)
 577 {
 578         int success;
 579         GtkWidget *dialog, *vbox;
 580         struct cylinder_widget cylinder;
 581         struct dive *dive;
 582
 583         cylinder.index = index;
 584         cylinder.changed = 0;
 585
 586         dive = current_dive;
 587         if (!dive)
 588                 return 0;
 589         *cyl = dive->cylinder[index];
 590
 591         dialog = gtk_dialog_new_with_buttons("Cylinder",
 592                 GTK_WINDOW(main_window),
 593                 GTK_DIALOG_DESTROY_WITH_PARENT,
 594                 GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
 595                 GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
 596                 NULL);
 597
 598         vbox = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
 599         cylinder_widget(vbox, &cylinder, cylinder_model);
 600
 601         show_cylinder(cyl, &cylinder);
 602
 603         gtk_widget_show_all(dialog);
 604         success = gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT;
 605         if (success) {
 606                 record_cylinder_changes(cyl, &cylinder);
 607                 dive->cylinder[index] = *cyl;
 608                 mark_divelist_changed(TRUE);
 609                 flush_divelist(dive);
 610         }
 611
 612         gtk_widget_destroy(dialog);
 613
 614         return success;
 615 }
 616
 617 static int get_model_index(GtkListStore *model, GtkTreeIter *iter)
 618 {
 619         int *p, index;
 620         GtkTreePath *path;
 621
 622         path = gtk_tree_model_get_path(GTK_TREE_MODEL(model), iter);
 623         p = gtk_tree_path_get_indices(path);
 624         index = p ? *p : 0;
 625         gtk_tree_path_free(path);
 626         return index;
 627 }
 628
 629 static void edit_cb(GtkButton *button, gpointer data)
 630 {
 631         int index;
 632         GtkTreeIter iter;
 633         GtkListStore *model = cylinder_list.model;
 634         GtkTreeSelection *selection;
 635         cylinder_t cyl;
 636
 637         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 638
 639         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 640         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 641                 return;
 642
 643         index = get_model_index(model, &iter);
 644         if (!edit_cylinder_dialog(index, &cyl))
 645                 return;
 646
 647         set_one_cylinder(index, &cyl, model, &iter);
 648         repaint_dive();
 649 }
 650
 651 static void add_cb(GtkButton *button, gpointer data)
 652 {
 653         int index = cylinder_list.max_index;
 654         GtkTreeIter iter;
 655         GtkListStore *model = cylinder_list.model;
 656         GtkTreeSelection *selection;
 657         cylinder_t cyl;
 658
 659         if (!edit_cylinder_dialog(index, &cyl))
 660                 return;
 661
 662         gtk_list_store_append(model, &iter);
 663         set_one_cylinder(index, &cyl, model, &iter);
 664
 665         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 666         gtk_tree_selection_select_iter(selection, &iter);
 667
 668         cylinder_list.max_index++;
 669         gtk_widget_set_sensitive(cylinder_list.add, cylinder_list.max_index < MAX_CYLINDERS);
 670 }
 671
 672 static void del_cb(GtkButton *button, gpointer data)
 673 {
 674         int index, nr;
 675         GtkTreeIter iter;
 676         GtkListStore *model = cylinder_list.model;
 677         GtkTreeSelection *selection;
 678         struct dive *dive;
 679         cylinder_t *cyl;
 680
 681         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 682
 683         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 684         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 685                 return;
 686
 687         index = get_model_index(model, &iter);
 688
 689         dive = current_dive;
 690         if (!dive)
 691                 return;
 692         cyl = dive->cylinder + index;
 693         nr = cylinder_list.max_index - index - 1;
 694
 695         gtk_list_store_remove(model, &iter);
 696
 697         cylinder_list.max_index--;
 698         memmove(cyl, cyl+1, nr*sizeof(*cyl));
 699         memset(cyl+nr, 0, sizeof(*cyl));
 700
 701         mark_divelist_changed(TRUE);
 702         flush_divelist(dive);
 703
 704         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 705         gtk_widget_set_sensitive(cylinder_list.del, 0);
 706         gtk_widget_set_sensitive(cylinder_list.add, 1);
 707 }
 708
 709 static GtkListStore *create_tank_size_model(void)
 710 {
 711         GtkListStore *model;
 712
 713         model = gtk_list_store_new(3,
 714                 G_TYPE_STRING,          /* Tank name */
 715                 G_TYPE_INT,             /* Tank size in mliter */
 716                 G_TYPE_INT,             /* Tank working pressure in mbar */
 717                 -1);
 718
 719         fill_tank_list(model);
 720         return model;
 721 }
 722
 723 static void size_data_func(GtkTreeViewColumn *col,
 724                            GtkCellRenderer *renderer,
 725                            GtkTreeModel *model,
 726                            GtkTreeIter *iter,
 727                            gpointer data)
 728 {
 729         int ml, mbar;
 730         double size, pressure;
 731         char buffer[10];
 732
 733         gtk_tree_model_get(model, iter, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 734         convert_volume_pressure(ml, mbar, &size, &pressure);
 735         if (size)
 736                 snprintf(buffer, sizeof(buffer), "%.1f", size);
 737         else
 738                 strcpy(buffer, "unkn");
 739         g_object_set(renderer, "text", buffer, NULL);
 740 }
 741
 742 static void pressure_data_func(GtkTreeViewColumn *col,
 743                            GtkCellRenderer *renderer,
 744                            GtkTreeModel *model,
 745                            GtkTreeIter *iter,
 746                            gpointer data)
 747 {
 748         int index = (long)data;
 749         int mbar, decimals;
 750         double pressure;
 751         char buffer[10];
 752
 753         gtk_tree_model_get(model, iter, index, &mbar, -1);
 754         decimals = convert_pressure(mbar, &pressure);
 755         if (mbar)
 756                 snprintf(buffer, sizeof(buffer), "%.*f", decimals, pressure);
 757         else
 758                 *buffer = 0;
 759         g_object_set(renderer, "text", buffer, NULL);
 760 }
 761
 762 static void percentage_data_func(GtkTreeViewColumn *col,
 763                            GtkCellRenderer *renderer,
 764                            GtkTreeModel *model,
 765                            GtkTreeIter *iter,
 766                            gpointer data)
 767 {
 768         int index = (long)data;
 769         int permille;
 770         char buffer[10];
 771
 772         gtk_tree_model_get(model, iter, index, &permille, -1);
 773         if (permille)
 774                 snprintf(buffer, sizeof(buffer), "%.1f%%", permille / 10.0);
 775         else
 776                 *buffer = 0;
 777         g_object_set(renderer, "text", buffer, NULL);
 778 }
 779
 780 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
 781 {
 782         GtkTreeIter iter;
 783         int selected;
 784
 785         selected = gtk_tree_selection_get_selected(selection, NULL, &iter);
 786         gtk_widget_set_sensitive(cylinder_list.edit, selected);
 787         gtk_widget_set_sensitive(cylinder_list.del, selected);
 788 }
 789
 790 static void row_activated_cb(GtkTreeView *tree_view,
 791                         GtkTreePath *path,
 792                         GtkTreeViewColumn *column,
 793                         GtkTreeModel *model)
 794 {
 795         edit_cb(NULL, NULL);
 796 }
 797
 798 static GtkWidget *cylinder_list_create(void)
 799 {
 800         GtkWidget *tree_view;
 801         GtkTreeSelection *selection;
 802         GtkListStore *model;
 803
 804         model = gtk_list_store_new(CYL_COLUMNS,
 805                 G_TYPE_STRING,          /* CYL_DESC: utf8 */
 806                 G_TYPE_INT,             /* CYL_SIZE: mliter */
 807                 G_TYPE_INT,             /* CYL_WORKP: mbar */
 808                 G_TYPE_INT,             /* CYL_STARTP: mbar */
 809                 G_TYPE_INT,             /* CYL_ENDP: mbar */
 810                 G_TYPE_INT,             /* CYL_O2: permille */
 811                 G_TYPE_INT              /* CYL_HE: permille */
 812                 );
 813         cylinder_list.model = model;
 814         tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
 815         g_signal_connect(tree_view, "row-activated", G_CALLBACK(row_activated_cb), model);
 816
 817         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
 818         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
 819         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), model);
 820
 821         g_object_set(G_OBJECT(tree_view), "headers-visible", TRUE,
 822                                           "enable-grid-lines", GTK_TREE_VIEW_GRID_LINES_BOTH,
 823                                           NULL);
 824
 825         cylinder_list.desc = tree_view_column(tree_view, CYL_DESC, "Type", NULL, PANGO_ALIGN_LEFT, TRUE);
 826         cylinder_list.size = tree_view_column(tree_view, CYL_SIZE, "Size", size_data_func, PANGO_ALIGN_RIGHT, TRUE);
 827         cylinder_list.workp = tree_view_column(tree_view, CYL_WORKP, "MaxPress", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 828         cylinder_list.startp = tree_view_column(tree_view, CYL_STARTP, "Start", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 829         cylinder_list.endp = tree_view_column(tree_view, CYL_ENDP, "End", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 830         cylinder_list.o2 = tree_view_column(tree_view, CYL_O2, "O" UTF8_SUBSCRIPT_2 "%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 831         cylinder_list.he = tree_view_column(tree_view, CYL_HE, "He%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 832         return tree_view;
 833 }
 834
 835 GtkWidget *equipment_widget(void)
 836 {
 837         GtkWidget *vbox, *hbox, *frame, *framebox;
 838         GtkWidget *add, *del, *edit;
 839
 840         vbox = gtk_vbox_new(FALSE, 3);
 841
 842         /*
 843          * We create the cylinder size model at startup, since
 844          * we're going to share it across all cylinders and all
 845          * dives. So if you add a new cylinder type in one dive,
 846          * it will show up when you edit the cylinder types for
 847          * another dive.
 848          */
 849         cylinder_model = create_tank_size_model();
 850
 851         cylinder_list.tree_view = cylinder_list_create();
 852
 853         hbox = gtk_hbox_new(FALSE, 3);
 854         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 3);
 855
 856         frame = gtk_frame_new("Cylinders");
 857         gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 3);
 858
 859         framebox = gtk_vbox_new(FALSE, 3);
 860         gtk_container_add(GTK_CONTAINER(frame), framebox);
 861
 862         hbox = gtk_hbox_new(FALSE, 3);
 863         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 864
 865         gtk_box_pack_start(GTK_BOX(hbox), cylinder_list.tree_view, TRUE, FALSE, 3);
 866
 867         hbox = gtk_hbox_new(TRUE, 3);
 868         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 869
 870         edit = gtk_button_new_from_stock(GTK_STOCK_EDIT);
 871         add = gtk_button_new_from_stock(GTK_STOCK_ADD);
 872         del = gtk_button_new_from_stock(GTK_STOCK_DELETE);
 873         gtk_box_pack_start(GTK_BOX(hbox), edit, FALSE, FALSE, 0);
 874         gtk_box_pack_start(GTK_BOX(hbox), add, FALSE, FALSE, 0);
 875         gtk_box_pack_start(GTK_BOX(hbox), del, FALSE, FALSE, 0);
 876
 877         cylinder_list.edit = edit;
 878         cylinder_list.add = add;
 879         cylinder_list.del = del;
 880
 881         g_signal_connect(edit, "clicked", G_CALLBACK(edit_cb), NULL);
 882         g_signal_connect(add, "clicked", G_CALLBACK(add_cb), NULL);
 883         g_signal_connect(del, "clicked", G_CALLBACK(del_cb), NULL);
 884
 885         return vbox;
 886 }