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