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 /* we want bar - so let's not use our unit functions */
  53 static int convert_pressure(int mbar, double *p)
  54 {
  55         int decimals = 1;
  56         double pressure;
  57
  58         if (output_units.pressure == PSI) {
  59                 pressure = mbar_to_PSI(mbar);
  60                 decimals = 0;
  61         } else {
  62                 pressure = mbar / 1000.0;
  63         }
  64
  65         *p = pressure;
  66         return decimals;
  67 }
  68
  69 static int convert_volume_pressure(int ml, int mbar, double *v, double *p)
  70 {
  71         int decimals = 1;
  72         double volume, pressure;
  73
  74         volume = ml / 1000.0;
  75         if (mbar) {
  76                 if (output_units.volume == CUFT) {
  77                         volume = ml_to_cuft(ml);
  78                         volume *= bar_to_atm(mbar / 1000.0);
  79                 }
  80
  81                 if (output_units.pressure == PSI) {
  82                         pressure = mbar_to_PSI(mbar);
  83                         decimals = 0;
  84                 } else
  85                         pressure = mbar / 1000.0;
  86         }
  87         *v = volume;
  88         *p = pressure;
  89         return decimals;
  90 }
  91
  92 static void set_cylinder_type_spinbuttons(struct cylinder_widget *cylinder, int ml, int mbar)
  93 {
  94         double volume, pressure;
  95
  96         convert_volume_pressure(ml, mbar, &volume, &pressure);
  97         gtk_spin_button_set_value(cylinder->size, volume);
  98         gtk_spin_button_set_value(cylinder->pressure, pressure);
  99 }
 100
 101 static void set_cylinder_pressure_spinbuttons(struct cylinder_widget *cylinder, cylinder_t *cyl)
 102 {
 103         double pressure;
 104
 105         convert_pressure(cyl->start.mbar, &pressure);
 106         gtk_spin_button_set_value(cylinder->start, pressure);
 107         convert_pressure(cyl->end.mbar, &pressure);
 108         gtk_spin_button_set_value(cylinder->end, pressure);
 109 }
 110
 111 /*
 112  * The gtk_tree_model_foreach() interface is bad. It could have
 113  * returned whether the callback ever returned true
 114  */
 115 static GtkTreeIter *found_match = NULL;
 116 static GtkTreeIter match_iter;
 117
 118 static gboolean match_cylinder(GtkTreeModel *model,
 119                                 GtkTreePath *path,
 120                                 GtkTreeIter *iter,
 121                                 gpointer data)
 122 {
 123         int match;
 124         gchar *name;
 125         const char *desc = data;
 126
 127         gtk_tree_model_get(model, iter, 0, &name, -1);
 128         match = !strcmp(desc, name);
 129         g_free(name);
 130         if (match) {
 131                 match_iter = *iter;
 132                 found_match = &match_iter;
 133         }
 134         return match;
 135 }
 136
 137 static int get_active_cylinder(GtkComboBox *combo_box, GtkTreeIter *iter)
 138 {
 139         char *desc;
 140
 141         if (gtk_combo_box_get_active_iter(combo_box, iter))
 142                 return TRUE;
 143
 144         desc = gtk_combo_box_get_active_text(combo_box);
 145
 146         found_match = NULL;
 147         gtk_tree_model_foreach(GTK_TREE_MODEL(cylinder_model), match_cylinder, (void *)desc);
 148
 149         g_free(desc);
 150         if (!found_match)
 151                 return FALSE;
 152
 153         *iter = *found_match;
 154         gtk_combo_box_set_active_iter(combo_box, iter);
 155         return TRUE;
 156 }
 157
 158 static void cylinder_cb(GtkComboBox *combo_box, gpointer data)
 159 {
 160         GtkTreeIter iter;
 161         GtkTreeModel *model = gtk_combo_box_get_model(combo_box);
 162         int ml, mbar;
 163         struct cylinder_widget *cylinder = data;
 164         cylinder_t *cyl = current_dive->cylinder + cylinder->index;
 165
 166         /* Did the user set it to some non-standard value? */
 167         if (!get_active_cylinder(combo_box, &iter)) {
 168                 cylinder->changed = 1;
 169                 return;
 170         }
 171
 172         /*
 173          * We get "change" signal callbacks just because we set
 174          * the description by hand. Whatever. So ignore them if
 175          * they are no-ops.
 176          */
 177         if (!cylinder->changed && cyl->type.description) {
 178                 int same;
 179                 char *desc = gtk_combo_box_get_active_text(combo_box);
 180
 181                 same = !strcmp(desc, cyl->type.description);
 182                 g_free(desc);
 183                 if (same)
 184                         return;
 185         }
 186         cylinder->changed = 1;
 187
 188         gtk_tree_model_get(model, &iter,
 189                 CYL_SIZE, &ml,
 190                 CYL_WORKP, &mbar,
 191                 -1);
 192
 193         set_cylinder_type_spinbuttons(cylinder, ml, mbar);
 194 }
 195
 196 static GtkTreeIter *add_cylinder_type(const char *desc, int ml, int mbar, GtkTreeIter *iter)
 197 {
 198         GtkTreeModel *model;
 199
 200         /* Don't even bother adding stuff without a size */
 201         if (!ml)
 202                 return NULL;
 203
 204         found_match = NULL;
 205         model = GTK_TREE_MODEL(cylinder_model);
 206         gtk_tree_model_foreach(model, match_cylinder, (void *)desc);
 207
 208         if (!found_match) {
 209                 GtkListStore *store = GTK_LIST_STORE(model);
 210
 211                 gtk_list_store_append(store, iter);
 212                 gtk_list_store_set(store, iter,
 213                         0, desc,
 214                         1, ml,
 215                         2, mbar,
 216                         -1);
 217                 return iter;
 218         }
 219         return found_match;
 220 }
 221
 222 /*
 223  * When adding a dive, we'll add all the pre-existing cylinder
 224  * information from that dive to our cylinder model.
 225  */
 226 void add_cylinder_description(cylinder_type_t *type)
 227 {
 228         GtkTreeIter iter;
 229         const char *desc;
 230         unsigned int size, workp;
 231
 232         desc = type->description;
 233         if (!desc)
 234                 return;
 235         size = type->size.mliter;
 236         workp = type->workingpressure.mbar;
 237         add_cylinder_type(desc, size, workp, &iter);
 238 }
 239
 240 static void add_cylinder(struct cylinder_widget *cylinder, const char *desc, int ml, int mbar)
 241 {
 242         GtkTreeIter iter, *match;
 243
 244         cylinder->name = desc;
 245         match = add_cylinder_type(desc, ml, mbar, &iter);
 246         if (match)
 247                 gtk_combo_box_set_active_iter(cylinder->description, match);
 248 }
 249
 250 static void show_cylinder(cylinder_t *cyl, struct cylinder_widget *cylinder)
 251 {
 252         const char *desc;
 253         int ml, mbar;
 254         double o2;
 255
 256         /* Don't show uninitialized cylinder widgets */
 257         if (!cylinder->description)
 258                 return;
 259
 260         desc = cyl->type.description;
 261         if (!desc)
 262                 desc = "";
 263         ml = cyl->type.size.mliter;
 264         mbar = cyl->type.workingpressure.mbar;
 265         add_cylinder(cylinder, desc, ml, mbar);
 266
 267         set_cylinder_type_spinbuttons(cylinder,
 268                 cyl->type.size.mliter, cyl->type.workingpressure.mbar);
 269         set_cylinder_pressure_spinbuttons(cylinder, cyl);
 270         o2 = cyl->gasmix.o2.permille / 10.0;
 271         gtk_widget_set_sensitive(cylinder->o2, !!o2);
 272         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button), !!o2);
 273         if (!o2)
 274                 o2 = 21.0;
 275         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->o2), o2);
 276 }
 277
 278 static int cyl_nothing(cylinder_t *cyl)
 279 {
 280         return  !cyl->type.size.mliter &&
 281                 !cyl->type.workingpressure.mbar &&
 282                 !cyl->type.description &&
 283                 !cyl->gasmix.o2.permille &&
 284                 !cyl->gasmix.he.permille &&
 285                 !cyl->sample_start.mbar &&
 286                 !cyl->sample_end.mbar &&
 287                 !cyl->start.mbar &&
 288                 !cyl->end.mbar;
 289 }
 290
 291 static void set_one_cylinder(int index, cylinder_t *cyl, GtkListStore *model, GtkTreeIter *iter)
 292 {
 293         unsigned int start, end;
 294
 295         start = cyl->start.mbar ? : cyl->sample_start.mbar;
 296         end = cyl->end.mbar ? : cyl->sample_end.mbar;
 297         gtk_list_store_set(model, iter,
 298                 CYL_DESC, cyl->type.description ? : "",
 299                 CYL_SIZE, cyl->type.size.mliter,
 300                 CYL_WORKP, cyl->type.workingpressure.mbar,
 301                 CYL_STARTP, start,
 302                 CYL_ENDP, end,
 303                 CYL_O2, cyl->gasmix.o2.permille,
 304                 CYL_HE, cyl->gasmix.he.permille,
 305                 -1);
 306 }
 307
 308 void show_dive_equipment(struct dive *dive)
 309 {
 310         int i, max;
 311         GtkTreeIter iter;
 312         GtkListStore *model;
 313
 314         model = cylinder_list.model;
 315         gtk_list_store_clear(model);
 316         max = MAX_CYLINDERS;
 317         do {
 318                 cylinder_t *cyl = &dive->cylinder[max-1];
 319
 320                 if (!cyl_nothing(cyl))
 321                         break;
 322         } while (--max);
 323
 324         cylinder_list.max_index = max;
 325
 326         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 327         gtk_widget_set_sensitive(cylinder_list.del, 0);
 328         gtk_widget_set_sensitive(cylinder_list.add, max < MAX_CYLINDERS);
 329
 330         for (i = 0; i < max; i++) {
 331                 cylinder_t *cyl = dive->cylinder+i;
 332
 333                 gtk_list_store_append(model, &iter);
 334                 set_one_cylinder(i, cyl, model, &iter);
 335         }
 336 }
 337
 338 static GtkWidget *create_spinbutton(GtkWidget *vbox, const char *name, double min, double max, double incr)
 339 {
 340         GtkWidget *frame, *hbox, *button;
 341
 342         frame = gtk_frame_new(name);
 343         gtk_box_pack_start(GTK_BOX(vbox), frame, TRUE, FALSE, 0);
 344
 345         hbox = gtk_hbox_new(FALSE, 3);
 346         gtk_container_add(GTK_CONTAINER(frame), hbox);
 347
 348         button = gtk_spin_button_new_with_range(min, max, incr);
 349         gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, FALSE, 0);
 350
 351         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 352
 353         return button;
 354 }
 355
 356 static void fill_cylinder_info(struct cylinder_widget *cylinder, cylinder_t *cyl, const char *desc,
 357                 double volume, double pressure, double start, double end, int o2)
 358 {
 359         int mbar, ml;
 360
 361         if (output_units.pressure == PSI) {
 362                 pressure = psi_to_bar(pressure);
 363                 start = psi_to_bar(start);
 364                 end = psi_to_bar(end);
 365         }
 366
 367         if (pressure && output_units.volume == CUFT) {
 368                 volume = cuft_to_l(volume);
 369                 volume /= bar_to_atm(pressure);
 370         }
 371
 372         ml = volume * 1000 + 0.5;
 373         mbar = pressure * 1000 + 0.5;
 374
 375         if (o2 < 211)
 376                 o2 = 0;
 377         cyl->type.description = desc;
 378         cyl->type.size.mliter = ml;
 379         cyl->type.workingpressure.mbar = mbar;
 380         cyl->start.mbar = start * 1000 + 0.5;
 381         cyl->end.mbar = end * 1000 + 0.5;
 382         cyl->gasmix.o2.permille = o2;
 383
 384         /*
 385          * Also, insert it into the model if it doesn't already exist
 386          */
 387         add_cylinder(cylinder, desc, ml, mbar);
 388 }
 389
 390 static void record_cylinder_changes(cylinder_t *cyl, struct cylinder_widget *cylinder)
 391 {
 392         const gchar *desc;
 393         GtkComboBox *box;
 394         double volume, pressure, start, end;
 395         int o2;
 396
 397         /* Ignore uninitialized cylinder widgets */
 398         box = cylinder->description;
 399         if (!box)
 400                 return;
 401
 402         desc = gtk_combo_box_get_active_text(box);
 403         volume = gtk_spin_button_get_value(cylinder->size);
 404         pressure = gtk_spin_button_get_value(cylinder->pressure);
 405         start = gtk_spin_button_get_value(cylinder->start);
 406         end = gtk_spin_button_get_value(cylinder->end);
 407         o2 = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->o2))*10 + 0.5;
 408         if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button)))
 409                 o2 = 0;
 410         fill_cylinder_info(cylinder, cyl, desc, volume, pressure, start, end, o2);
 411 }
 412
 413 void flush_dive_equipment_changes(struct dive *dive)
 414 {
 415         /* We do nothing: we require the "Ok" button press */
 416 }
 417
 418 /*
 419  * We hardcode the most common standard cylinders,
 420  * we should pick up any other names from the dive
 421  * logs directly.
 422  */
 423 static struct tank_info {
 424         const char *name;
 425         int size;       /* cuft if < 1000, otherwise mliter */
 426         int psi;        /* If zero, size is in mliter */
 427 } tank_info[100] = {
 428         /* Need an empty entry for the no-cylinder case */
 429         { "", 0, 0 },
 430
 431         /* Size-only metric cylinders */
 432         { "10.0 l", 10000 },
 433         { "11.1 l", 11100 },
 434
 435         /* Most common AL cylinders */
 436         { "AL50",   50, 3000 },
 437         { "AL63",   63, 3000 },
 438         { "AL72",   72, 3000 },
 439         { "AL80",   80, 3000 },
 440         { "AL100", 100, 3300 },
 441
 442         /* Somewhat common LP steel cylinders */
 443         { "LP85",   85, 2640 },
 444         { "LP95",   95, 2640 },
 445         { "LP108", 108, 2640 },
 446         { "LP121", 121, 2640 },
 447
 448         /* Somewhat common HP steel cylinders */
 449         { "HP65",   65, 3442 },
 450         { "HP80",   80, 3442 },
 451         { "HP100", 100, 3442 },
 452         { "HP119", 119, 3442 },
 453         { "HP130", 130, 3442 },
 454
 455         /* We'll fill in more from the dive log dynamically */
 456         { NULL, }
 457 };
 458
 459 static void fill_tank_list(GtkListStore *store)
 460 {
 461         GtkTreeIter iter;
 462         struct tank_info *info = tank_info;
 463
 464         while (info->name) {
 465                 int size = info->size;
 466                 int psi = info->psi;
 467                 int mbar = 0, ml = size;
 468
 469                 /* Is it in cuft and psi? */
 470                 if (psi) {
 471                         double bar = psi_to_bar(psi);
 472                         double airvolume = cuft_to_l(size) * 1000.0;
 473                         double atm = bar_to_atm(bar);
 474
 475                         ml = airvolume / atm + 0.5;
 476                         mbar = bar*1000 + 0.5;
 477                 }
 478
 479                 gtk_list_store_append(store, &iter);
 480                 gtk_list_store_set(store, &iter,
 481                         0, info->name,
 482                         1, ml,
 483                         2, mbar,
 484                         -1);
 485                 info++;
 486         }
 487 }
 488
 489 static void nitrox_cb(GtkToggleButton *button, gpointer data)
 490 {
 491         struct cylinder_widget *cylinder = data;
 492         int state;
 493
 494         state = gtk_toggle_button_get_active(button);
 495         gtk_widget_set_sensitive(cylinder->o2, state);
 496 }
 497
 498 static gboolean completion_cb(GtkEntryCompletion *widget, GtkTreeModel *model, GtkTreeIter *iter, struct cylinder_widget *cylinder)
 499 {
 500         const char *desc;
 501         unsigned int ml, mbar;
 502
 503         gtk_tree_model_get(model, iter, CYL_DESC, &desc, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 504         add_cylinder(cylinder, desc, ml, mbar);
 505         return TRUE;
 506 }
 507
 508 static void cylinder_activate_cb(GtkComboBox *combo_box, gpointer data)
 509 {
 510         struct cylinder_widget *cylinder = data;
 511         cylinder_cb(cylinder->description, data);
 512 }
 513
 514 static void cylinder_widget(GtkWidget *vbox, struct cylinder_widget *cylinder, GtkListStore *model)
 515 {
 516         GtkWidget *frame, *hbox;
 517         GtkEntry *entry;
 518         GtkEntryCompletion *completion;
 519         GtkWidget *widget;
 520
 521         /*
 522          * Cylinder type: description, size and
 523          * working pressure
 524          */
 525         frame = gtk_frame_new("Cylinder");
 526
 527         hbox = gtk_hbox_new(FALSE, 3);
 528         gtk_container_add(GTK_CONTAINER(frame), hbox);
 529
 530         widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
 531         gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
 532
 533         cylinder->description = GTK_COMBO_BOX(widget);
 534         g_signal_connect(widget, "changed", G_CALLBACK(cylinder_cb), cylinder);
 535
 536         entry = GTK_ENTRY(GTK_BIN(widget)->child);
 537         g_signal_connect(entry, "activate", G_CALLBACK(cylinder_activate_cb), cylinder);
 538
 539         completion = gtk_entry_completion_new();
 540         gtk_entry_completion_set_text_column(completion, 0);
 541         gtk_entry_completion_set_model(completion, GTK_TREE_MODEL(model));
 542         g_signal_connect(completion, "match-selected", G_CALLBACK(completion_cb), cylinder);
 543         gtk_entry_set_completion(entry, completion);
 544
 545         hbox = gtk_hbox_new(FALSE, 3);
 546         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 547         gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, TRUE, 0);
 548
 549         widget = create_spinbutton(hbox, "Size", 0, 300, 0.1);
 550         cylinder->size = GTK_SPIN_BUTTON(widget);
 551
 552         widget = create_spinbutton(hbox, "Pressure", 0, 5000, 1);
 553         cylinder->pressure = GTK_SPIN_BUTTON(widget);
 554
 555         /*
 556          * Cylinder start/end pressures
 557          */
 558         hbox = gtk_hbox_new(FALSE, 3);
 559         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 560
 561         widget = create_spinbutton(hbox, "Start Pressure", 0, 5000, 1);
 562         cylinder->start = GTK_SPIN_BUTTON(widget);
 563
 564         widget = create_spinbutton(hbox, "End Pressure", 0, 5000, 1);
 565         cylinder->end = GTK_SPIN_BUTTON(widget);
 566
 567         /*
 568          * Cylinder gas mix: Air, Nitrox or Trimix
 569          */
 570         hbox = gtk_hbox_new(FALSE, 3);
 571         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 572
 573         widget = create_spinbutton(hbox, "Nitrox", 21, 100, 0.1);
 574         cylinder->o2 = widget;
 575         cylinder->gasmix_button = gtk_check_button_new();
 576         gtk_box_pack_start(GTK_BOX(gtk_widget_get_parent(cylinder->o2)),
 577                 cylinder->gasmix_button, FALSE, FALSE, 3);
 578         g_signal_connect(cylinder->gasmix_button, "toggled", G_CALLBACK(nitrox_cb), cylinder);
 579
 580         gtk_spin_button_set_range(GTK_SPIN_BUTTON(cylinder->o2), 21.0, 100.0);
 581 }
 582
 583 static int edit_cylinder_dialog(int index, cylinder_t *cyl)
 584 {
 585         int success;
 586         GtkWidget *dialog, *vbox;
 587         struct cylinder_widget cylinder;
 588         struct dive *dive;
 589
 590         cylinder.index = index;
 591         cylinder.changed = 0;
 592
 593         dive = current_dive;
 594         if (!dive)
 595                 return 0;
 596         *cyl = dive->cylinder[index];
 597
 598         dialog = gtk_dialog_new_with_buttons("Cylinder",
 599                 GTK_WINDOW(main_window),
 600                 GTK_DIALOG_DESTROY_WITH_PARENT,
 601                 GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
 602                 GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
 603                 NULL);
 604
 605         vbox = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
 606         cylinder_widget(vbox, &cylinder, cylinder_model);
 607
 608         show_cylinder(cyl, &cylinder);
 609
 610         gtk_widget_show_all(dialog);
 611         success = gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT;
 612         if (success) {
 613                 record_cylinder_changes(cyl, &cylinder);
 614                 dive->cylinder[index] = *cyl;
 615                 mark_divelist_changed(TRUE);
 616                 flush_divelist(dive);
 617         }
 618
 619         gtk_widget_destroy(dialog);
 620
 621         return success;
 622 }
 623
 624 static int get_model_index(GtkListStore *model, GtkTreeIter *iter)
 625 {
 626         int *p, index;
 627         GtkTreePath *path;
 628
 629         path = gtk_tree_model_get_path(GTK_TREE_MODEL(model), iter);
 630         p = gtk_tree_path_get_indices(path);
 631         index = p ? *p : 0;
 632         gtk_tree_path_free(path);
 633         return index;
 634 }
 635
 636 static void edit_cb(GtkButton *button, gpointer data)
 637 {
 638         int index;
 639         GtkTreeIter iter;
 640         GtkListStore *model = cylinder_list.model;
 641         GtkTreeSelection *selection;
 642         cylinder_t cyl;
 643
 644         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 645
 646         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 647         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 648                 return;
 649
 650         index = get_model_index(model, &iter);
 651         if (!edit_cylinder_dialog(index, &cyl))
 652                 return;
 653
 654         set_one_cylinder(index, &cyl, model, &iter);
 655         repaint_dive();
 656 }
 657
 658 static void add_cb(GtkButton *button, gpointer data)
 659 {
 660         int index = cylinder_list.max_index;
 661         GtkTreeIter iter;
 662         GtkListStore *model = cylinder_list.model;
 663         GtkTreeSelection *selection;
 664         cylinder_t cyl;
 665
 666         if (!edit_cylinder_dialog(index, &cyl))
 667                 return;
 668
 669         gtk_list_store_append(model, &iter);
 670         set_one_cylinder(index, &cyl, model, &iter);
 671
 672         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 673         gtk_tree_selection_select_iter(selection, &iter);
 674
 675         cylinder_list.max_index++;
 676         gtk_widget_set_sensitive(cylinder_list.add, cylinder_list.max_index < MAX_CYLINDERS);
 677 }
 678
 679 static void del_cb(GtkButton *button, gpointer data)
 680 {
 681         int index, nr;
 682         GtkTreeIter iter;
 683         GtkListStore *model = cylinder_list.model;
 684         GtkTreeSelection *selection;
 685         struct dive *dive;
 686         cylinder_t *cyl;
 687
 688         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 689
 690         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 691         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 692                 return;
 693
 694         index = get_model_index(model, &iter);
 695
 696         dive = current_dive;
 697         if (!dive)
 698                 return;
 699         cyl = dive->cylinder + index;
 700         nr = cylinder_list.max_index - index - 1;
 701
 702         gtk_list_store_remove(model, &iter);
 703
 704         cylinder_list.max_index--;
 705         memmove(cyl, cyl+1, nr*sizeof(*cyl));
 706         memset(cyl+nr, 0, sizeof(*cyl));
 707
 708         mark_divelist_changed(TRUE);
 709         flush_divelist(dive);
 710
 711         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 712         gtk_widget_set_sensitive(cylinder_list.del, 0);
 713         gtk_widget_set_sensitive(cylinder_list.add, 1);
 714 }
 715
 716 static GtkListStore *create_tank_size_model(void)
 717 {
 718         GtkListStore *model;
 719
 720         model = gtk_list_store_new(3,
 721                 G_TYPE_STRING,          /* Tank name */
 722                 G_TYPE_INT,             /* Tank size in mliter */
 723                 G_TYPE_INT,             /* Tank working pressure in mbar */
 724                 -1);
 725
 726         fill_tank_list(model);
 727         return model;
 728 }
 729
 730 static void size_data_func(GtkTreeViewColumn *col,
 731                            GtkCellRenderer *renderer,
 732                            GtkTreeModel *model,
 733                            GtkTreeIter *iter,
 734                            gpointer data)
 735 {
 736         int ml, mbar;
 737         double size, pressure;
 738         char buffer[10];
 739
 740         gtk_tree_model_get(model, iter, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 741         convert_volume_pressure(ml, mbar, &size, &pressure);
 742         if (size)
 743                 snprintf(buffer, sizeof(buffer), "%.1f", size);
 744         else
 745                 strcpy(buffer, "unkn");
 746         g_object_set(renderer, "text", buffer, NULL);
 747 }
 748
 749 static void pressure_data_func(GtkTreeViewColumn *col,
 750                            GtkCellRenderer *renderer,
 751                            GtkTreeModel *model,
 752                            GtkTreeIter *iter,
 753                            gpointer data)
 754 {
 755         int index = (long)data;
 756         int mbar, decimals;
 757         double pressure;
 758         char buffer[10];
 759
 760         gtk_tree_model_get(model, iter, index, &mbar, -1);
 761         decimals = convert_pressure(mbar, &pressure);
 762         if (mbar)
 763                 snprintf(buffer, sizeof(buffer), "%.*f", decimals, pressure);
 764         else
 765                 *buffer = 0;
 766         g_object_set(renderer, "text", buffer, NULL);
 767 }
 768
 769 static void percentage_data_func(GtkTreeViewColumn *col,
 770                            GtkCellRenderer *renderer,
 771                            GtkTreeModel *model,
 772                            GtkTreeIter *iter,
 773                            gpointer data)
 774 {
 775         int index = (long)data;
 776         int permille;
 777         char buffer[10];
 778
 779         gtk_tree_model_get(model, iter, index, &permille, -1);
 780         if (permille)
 781                 snprintf(buffer, sizeof(buffer), "%.1f%%", permille / 10.0);
 782         else
 783                 *buffer = 0;
 784         g_object_set(renderer, "text", buffer, NULL);
 785 }
 786
 787 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
 788 {
 789         GtkTreeIter iter;
 790         int selected;
 791
 792         selected = gtk_tree_selection_get_selected(selection, NULL, &iter);
 793         gtk_widget_set_sensitive(cylinder_list.edit, selected);
 794         gtk_widget_set_sensitive(cylinder_list.del, selected);
 795 }
 796
 797 static void row_activated_cb(GtkTreeView *tree_view,
 798                         GtkTreePath *path,
 799                         GtkTreeViewColumn *column,
 800                         GtkTreeModel *model)
 801 {
 802         edit_cb(NULL, NULL);
 803 }
 804
 805 static GtkWidget *cylinder_list_create(void)
 806 {
 807         GtkWidget *tree_view;
 808         GtkTreeSelection *selection;
 809         GtkListStore *model;
 810
 811         model = gtk_list_store_new(CYL_COLUMNS,
 812                 G_TYPE_STRING,          /* CYL_DESC: utf8 */
 813                 G_TYPE_INT,             /* CYL_SIZE: mliter */
 814                 G_TYPE_INT,             /* CYL_WORKP: mbar */
 815                 G_TYPE_INT,             /* CYL_STARTP: mbar */
 816                 G_TYPE_INT,             /* CYL_ENDP: mbar */
 817                 G_TYPE_INT,             /* CYL_O2: permille */
 818                 G_TYPE_INT              /* CYL_HE: permille */
 819                 );
 820         cylinder_list.model = model;
 821         tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
 822         g_signal_connect(tree_view, "row-activated", G_CALLBACK(row_activated_cb), model);
 823
 824         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
 825         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
 826         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), model);
 827
 828         g_object_set(G_OBJECT(tree_view), "headers-visible", TRUE,
 829                                           "enable-grid-lines", GTK_TREE_VIEW_GRID_LINES_BOTH,
 830                                           NULL);
 831
 832         cylinder_list.desc = tree_view_column(tree_view, CYL_DESC, "Type", NULL, PANGO_ALIGN_LEFT, TRUE);
 833         cylinder_list.size = tree_view_column(tree_view, CYL_SIZE, "Size", size_data_func, PANGO_ALIGN_RIGHT, TRUE);
 834         cylinder_list.workp = tree_view_column(tree_view, CYL_WORKP, "MaxPress", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 835         cylinder_list.startp = tree_view_column(tree_view, CYL_STARTP, "Start", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 836         cylinder_list.endp = tree_view_column(tree_view, CYL_ENDP, "End", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 837         cylinder_list.o2 = tree_view_column(tree_view, CYL_O2, "O" UTF8_SUBSCRIPT_2 "%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 838         cylinder_list.he = tree_view_column(tree_view, CYL_HE, "He%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 839         return tree_view;
 840 }
 841
 842 GtkWidget *equipment_widget(void)
 843 {
 844         GtkWidget *vbox, *hbox, *frame, *framebox;
 845         GtkWidget *add, *del, *edit;
 846
 847         vbox = gtk_vbox_new(FALSE, 3);
 848
 849         /*
 850          * We create the cylinder size model at startup, since
 851          * we're going to share it across all cylinders and all
 852          * dives. So if you add a new cylinder type in one dive,
 853          * it will show up when you edit the cylinder types for
 854          * another dive.
 855          */
 856         cylinder_model = create_tank_size_model();
 857
 858         cylinder_list.tree_view = cylinder_list_create();
 859
 860         hbox = gtk_hbox_new(FALSE, 3);
 861         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 3);
 862
 863         frame = gtk_frame_new("Cylinders");
 864         gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 3);
 865
 866         framebox = gtk_vbox_new(FALSE, 3);
 867         gtk_container_add(GTK_CONTAINER(frame), framebox);
 868
 869         hbox = gtk_hbox_new(FALSE, 3);
 870         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 871
 872         gtk_box_pack_start(GTK_BOX(hbox), cylinder_list.tree_view, TRUE, FALSE, 3);
 873
 874         hbox = gtk_hbox_new(TRUE, 3);
 875         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 876
 877         edit = gtk_button_new_from_stock(GTK_STOCK_EDIT);
 878         add = gtk_button_new_from_stock(GTK_STOCK_ADD);
 879         del = gtk_button_new_from_stock(GTK_STOCK_DELETE);
 880         gtk_box_pack_start(GTK_BOX(hbox), edit, FALSE, FALSE, 0);
 881         gtk_box_pack_start(GTK_BOX(hbox), add, FALSE, FALSE, 0);
 882         gtk_box_pack_start(GTK_BOX(hbox), del, FALSE, FALSE, 0);
 883
 884         cylinder_list.edit = edit;
 885         cylinder_list.add = add;
 886         cylinder_list.del = del;
 887
 888         g_signal_connect(edit, "clicked", G_CALLBACK(edit_cb), NULL);
 889         g_signal_connect(add, "clicked", G_CALLBACK(add_cb), NULL);
 890         g_signal_connect(del, "clicked", G_CALLBACK(del_cb), NULL);
 891
 892         return vbox;
 893 }