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         if (mbar) {
  75                 if (output_units.volume == CUFT) {
  76                         volume = ml_to_cuft(ml);
  77                         volume *= bar_to_atm(mbar / 1000.0);
  78                 } else
  79                         volume = ml / 1000.0;
  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, int start, int end)
 102 {
 103         double pressure;
 104
 105         convert_pressure(start, &pressure);
 106         gtk_spin_button_set_value(cylinder->start, pressure);
 107         convert_pressure(end, &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,
 270                 cyl->start.mbar, cyl->end.mbar);
 271         o2 = cyl->gasmix.o2.permille / 10.0;
 272         gtk_widget_set_sensitive(cylinder->o2, !!o2);
 273         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button), !!o2);
 274         if (!o2)
 275                 o2 = 21.0;
 276         gtk_spin_button_set_value(GTK_SPIN_BUTTON(cylinder->o2), o2);
 277 }
 278
 279 static int cyl_nothing(cylinder_t *cyl)
 280 {
 281         return  !cyl->type.size.mliter &&
 282                 !cyl->type.workingpressure.mbar &&
 283                 !cyl->type.description &&
 284                 !cyl->gasmix.o2.permille &&
 285                 !cyl->gasmix.he.permille &&
 286                 !cyl->start.mbar &&
 287                 !cyl->end.mbar;
 288 }
 289
 290 static void set_one_cylinder(int index, cylinder_t *cyl, GtkListStore *model, GtkTreeIter *iter)
 291 {
 292         gtk_list_store_set(model, iter,
 293                 CYL_DESC, cyl->type.description ? : "",
 294                 CYL_SIZE, cyl->type.size.mliter,
 295                 CYL_WORKP, cyl->type.workingpressure.mbar,
 296                 CYL_STARTP, cyl->start.mbar,
 297                 CYL_ENDP, cyl->end.mbar,
 298                 CYL_O2, cyl->gasmix.o2.permille,
 299                 CYL_HE, cyl->gasmix.he.permille,
 300                 -1);
 301 }
 302
 303 void show_dive_equipment(struct dive *dive)
 304 {
 305         int i, max;
 306         GtkTreeIter iter;
 307         GtkListStore *model;
 308
 309         model = cylinder_list.model;
 310         gtk_list_store_clear(model);
 311         max = MAX_CYLINDERS;
 312         do {
 313                 cylinder_t *cyl = &dive->cylinder[max-1];
 314
 315                 if (!cyl_nothing(cyl))
 316                         break;
 317         } while (--max);
 318
 319         cylinder_list.max_index = max;
 320
 321         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 322         gtk_widget_set_sensitive(cylinder_list.del, 0);
 323         gtk_widget_set_sensitive(cylinder_list.add, max < MAX_CYLINDERS);
 324
 325         for (i = 0; i < max; i++) {
 326                 cylinder_t *cyl = dive->cylinder+i;
 327
 328                 gtk_list_store_append(model, &iter);
 329                 set_one_cylinder(i, cyl, model, &iter);
 330         }
 331 }
 332
 333 static GtkWidget *create_spinbutton(GtkWidget *vbox, const char *name, double min, double max, double incr)
 334 {
 335         GtkWidget *frame, *hbox, *button;
 336
 337         frame = gtk_frame_new(name);
 338         gtk_box_pack_start(GTK_BOX(vbox), frame, TRUE, FALSE, 0);
 339
 340         hbox = gtk_hbox_new(FALSE, 3);
 341         gtk_container_add(GTK_CONTAINER(frame), hbox);
 342
 343         button = gtk_spin_button_new_with_range(min, max, incr);
 344         gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, FALSE, 0);
 345
 346         gtk_spin_button_set_update_policy(GTK_SPIN_BUTTON(button), GTK_UPDATE_IF_VALID);
 347
 348         return button;
 349 }
 350
 351 static void fill_cylinder_info(struct cylinder_widget *cylinder, cylinder_t *cyl, const char *desc,
 352                 double volume, double pressure, double start, double end, int o2)
 353 {
 354         int mbar, ml;
 355
 356         if (output_units.pressure == PSI) {
 357                 pressure = psi_to_bar(pressure);
 358                 start = psi_to_bar(start);
 359                 end = psi_to_bar(end);
 360         }
 361
 362         if (pressure && output_units.volume == CUFT) {
 363                 volume = cuft_to_l(volume);
 364                 volume /= bar_to_atm(pressure);
 365         }
 366
 367         ml = volume * 1000 + 0.5;
 368         mbar = pressure * 1000 + 0.5;
 369
 370         if (o2 < 211)
 371                 o2 = 0;
 372         cyl->type.description = desc;
 373         cyl->type.size.mliter = ml;
 374         cyl->type.workingpressure.mbar = mbar;
 375         cyl->start.mbar = start * 1000 + 0.5;
 376         cyl->end.mbar = end * 1000 + 0.5;
 377         cyl->gasmix.o2.permille = o2;
 378
 379         /*
 380          * Also, insert it into the model if it doesn't already exist
 381          */
 382         add_cylinder(cylinder, desc, ml, mbar);
 383 }
 384
 385 static void record_cylinder_changes(cylinder_t *cyl, struct cylinder_widget *cylinder)
 386 {
 387         const gchar *desc;
 388         GtkComboBox *box;
 389         double volume, pressure, start, end;
 390         int o2;
 391
 392         /* Ignore uninitialized cylinder widgets */
 393         box = cylinder->description;
 394         if (!box)
 395                 return;
 396
 397         desc = gtk_combo_box_get_active_text(box);
 398         volume = gtk_spin_button_get_value(cylinder->size);
 399         pressure = gtk_spin_button_get_value(cylinder->pressure);
 400         start = gtk_spin_button_get_value(cylinder->start);
 401         end = gtk_spin_button_get_value(cylinder->end);
 402         o2 = gtk_spin_button_get_value(GTK_SPIN_BUTTON(cylinder->o2))*10 + 0.5;
 403         if (!gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(cylinder->gasmix_button)))
 404                 o2 = 0;
 405         fill_cylinder_info(cylinder, cyl, desc, volume, pressure, start, end, o2);
 406 }
 407
 408 void flush_dive_equipment_changes(struct dive *dive)
 409 {
 410         /* We do nothing: we require the "Ok" button press */
 411 }
 412
 413 /*
 414  * We hardcode the most common standard cylinders,
 415  * we should pick up any other names from the dive
 416  * logs directly.
 417  */
 418 static struct tank_info {
 419         const char *name;
 420         int size;       /* cuft if < 1000, otherwise mliter */
 421         int psi;        /* If zero, size is in mliter */
 422 } tank_info[100] = {
 423         /* Need an empty entry for the no-cylinder case */
 424         { "", 0, 0 },
 425
 426         /* Size-only metric cylinders */
 427         { "10.0 l", 10000 },
 428         { "11.1 l", 11100 },
 429
 430         /* Most common AL cylinders */
 431         { "AL50",   50, 3000 },
 432         { "AL63",   63, 3000 },
 433         { "AL72",   72, 3000 },
 434         { "AL80",   80, 3000 },
 435         { "AL100", 100, 3300 },
 436
 437         /* Somewhat common LP steel cylinders */
 438         { "LP85",   85, 2640 },
 439         { "LP95",   95, 2640 },
 440         { "LP108", 108, 2640 },
 441         { "LP121", 121, 2640 },
 442
 443         /* Somewhat common HP steel cylinders */
 444         { "HP65",   65, 3442 },
 445         { "HP80",   80, 3442 },
 446         { "HP100", 100, 3442 },
 447         { "HP119", 119, 3442 },
 448         { "HP130", 130, 3442 },
 449
 450         /* We'll fill in more from the dive log dynamically */
 451         { NULL, }
 452 };
 453
 454 static void fill_tank_list(GtkListStore *store)
 455 {
 456         GtkTreeIter iter;
 457         struct tank_info *info = tank_info;
 458
 459         while (info->name) {
 460                 int size = info->size;
 461                 int psi = info->psi;
 462                 int mbar = 0, ml = size;
 463
 464                 /* Is it in cuft and psi? */
 465                 if (psi) {
 466                         double bar = psi_to_bar(psi);
 467                         double airvolume = cuft_to_l(size) * 1000.0;
 468                         double atm = bar_to_atm(bar);
 469
 470                         ml = airvolume / atm + 0.5;
 471                         mbar = bar*1000 + 0.5;
 472                 }
 473
 474                 gtk_list_store_append(store, &iter);
 475                 gtk_list_store_set(store, &iter,
 476                         0, info->name,
 477                         1, ml,
 478                         2, mbar,
 479                         -1);
 480                 info++;
 481         }
 482 }
 483
 484 static void nitrox_cb(GtkToggleButton *button, gpointer data)
 485 {
 486         struct cylinder_widget *cylinder = data;
 487         int state;
 488
 489         state = gtk_toggle_button_get_active(button);
 490         gtk_widget_set_sensitive(cylinder->o2, state);
 491 }
 492
 493 static gboolean completion_cb(GtkEntryCompletion *widget, GtkTreeModel *model, GtkTreeIter *iter, struct cylinder_widget *cylinder)
 494 {
 495         const char *desc;
 496         unsigned int ml, mbar;
 497
 498         gtk_tree_model_get(model, iter, CYL_DESC, &desc, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 499         add_cylinder(cylinder, desc, ml, mbar);
 500         return TRUE;
 501 }
 502
 503 static void cylinder_activate_cb(GtkComboBox *combo_box, gpointer data)
 504 {
 505         struct cylinder_widget *cylinder = data;
 506         cylinder_cb(cylinder->description, data);
 507 }
 508
 509 static void cylinder_widget(GtkWidget *vbox, struct cylinder_widget *cylinder, GtkListStore *model)
 510 {
 511         GtkWidget *frame, *hbox;
 512         GtkEntry *entry;
 513         GtkEntryCompletion *completion;
 514         GtkWidget *widget;
 515
 516         /*
 517          * Cylinder type: description, size and
 518          * working pressure
 519          */
 520         frame = gtk_frame_new("Cylinder");
 521
 522         hbox = gtk_hbox_new(FALSE, 3);
 523         gtk_container_add(GTK_CONTAINER(frame), hbox);
 524
 525         widget = gtk_combo_box_entry_new_with_model(GTK_TREE_MODEL(model), 0);
 526         gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
 527
 528         cylinder->description = GTK_COMBO_BOX(widget);
 529         g_signal_connect(widget, "changed", G_CALLBACK(cylinder_cb), cylinder);
 530
 531         entry = GTK_ENTRY(GTK_BIN(widget)->child);
 532         g_signal_connect(entry, "activate", G_CALLBACK(cylinder_activate_cb), cylinder);
 533
 534         completion = gtk_entry_completion_new();
 535         gtk_entry_completion_set_text_column(completion, 0);
 536         gtk_entry_completion_set_model(completion, GTK_TREE_MODEL(model));
 537         g_signal_connect(completion, "match-selected", G_CALLBACK(completion_cb), cylinder);
 538         gtk_entry_set_completion(entry, completion);
 539
 540         hbox = gtk_hbox_new(FALSE, 3);
 541         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 542         gtk_box_pack_start(GTK_BOX(hbox), frame, FALSE, TRUE, 0);
 543
 544         widget = create_spinbutton(hbox, "Size", 0, 300, 0.1);
 545         cylinder->size = GTK_SPIN_BUTTON(widget);
 546
 547         widget = create_spinbutton(hbox, "Pressure", 0, 5000, 1);
 548         cylinder->pressure = GTK_SPIN_BUTTON(widget);
 549
 550         /*
 551          * Cylinder start/end pressures
 552          */
 553         hbox = gtk_hbox_new(FALSE, 3);
 554         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 555
 556         widget = create_spinbutton(hbox, "Start Pressure", 0, 5000, 1);
 557         cylinder->start = GTK_SPIN_BUTTON(widget);
 558
 559         widget = create_spinbutton(hbox, "End Pressure", 0, 5000, 1);
 560         cylinder->end = GTK_SPIN_BUTTON(widget);
 561
 562         /*
 563          * Cylinder gas mix: Air, Nitrox or Trimix
 564          */
 565         hbox = gtk_hbox_new(FALSE, 3);
 566         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
 567
 568         widget = create_spinbutton(hbox, "Nitrox", 21, 100, 0.1);
 569         cylinder->o2 = widget;
 570         cylinder->gasmix_button = gtk_check_button_new();
 571         gtk_box_pack_start(GTK_BOX(gtk_widget_get_parent(cylinder->o2)),
 572                 cylinder->gasmix_button, FALSE, FALSE, 3);
 573         g_signal_connect(cylinder->gasmix_button, "toggled", G_CALLBACK(nitrox_cb), cylinder);
 574
 575         gtk_spin_button_set_range(GTK_SPIN_BUTTON(cylinder->o2), 21.0, 100.0);
 576 }
 577
 578 static int edit_cylinder_dialog(int index, cylinder_t *cyl)
 579 {
 580         int success;
 581         GtkWidget *dialog, *vbox;
 582         struct cylinder_widget cylinder;
 583         struct dive *dive;
 584
 585         cylinder.index = index;
 586         cylinder.changed = 0;
 587
 588         dive = current_dive;
 589         if (!dive)
 590                 return 0;
 591         *cyl = dive->cylinder[index];
 592
 593         dialog = gtk_dialog_new_with_buttons("Cylinder",
 594                 GTK_WINDOW(main_window),
 595                 GTK_DIALOG_DESTROY_WITH_PARENT,
 596                 GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
 597                 GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
 598                 NULL);
 599
 600         vbox = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
 601         cylinder_widget(vbox, &cylinder, cylinder_model);
 602
 603         show_cylinder(cyl, &cylinder);
 604
 605         gtk_widget_show_all(dialog);
 606         success = gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT;
 607         if (success) {
 608                 record_cylinder_changes(cyl, &cylinder);
 609                 dive->cylinder[index] = *cyl;
 610                 mark_divelist_changed(TRUE);
 611                 flush_divelist(dive);
 612         }
 613
 614         gtk_widget_destroy(dialog);
 615
 616         return success;
 617 }
 618
 619 static int get_model_index(GtkListStore *model, GtkTreeIter *iter)
 620 {
 621         int *p, index;
 622         GtkTreePath *path;
 623
 624         path = gtk_tree_model_get_path(GTK_TREE_MODEL(model), iter);
 625         p = gtk_tree_path_get_indices(path);
 626         index = p ? *p : 0;
 627         gtk_tree_path_free(path);
 628         return index;
 629 }
 630
 631 static void edit_cb(GtkButton *button, gpointer data)
 632 {
 633         int index;
 634         GtkTreeIter iter;
 635         GtkListStore *model = cylinder_list.model;
 636         GtkTreeSelection *selection;
 637         cylinder_t cyl;
 638
 639         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 640
 641         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 642         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 643                 return;
 644
 645         index = get_model_index(model, &iter);
 646         if (!edit_cylinder_dialog(index, &cyl))
 647                 return;
 648
 649         set_one_cylinder(index, &cyl, model, &iter);
 650         repaint_dive();
 651 }
 652
 653 static void add_cb(GtkButton *button, gpointer data)
 654 {
 655         int index = cylinder_list.max_index;
 656         GtkTreeIter iter;
 657         GtkListStore *model = cylinder_list.model;
 658         GtkTreeSelection *selection;
 659         cylinder_t cyl;
 660
 661         if (!edit_cylinder_dialog(index, &cyl))
 662                 return;
 663
 664         gtk_list_store_append(model, &iter);
 665         set_one_cylinder(index, &cyl, model, &iter);
 666
 667         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 668         gtk_tree_selection_select_iter(selection, &iter);
 669
 670         cylinder_list.max_index++;
 671         gtk_widget_set_sensitive(cylinder_list.add, cylinder_list.max_index < MAX_CYLINDERS);
 672 }
 673
 674 static void del_cb(GtkButton *button, gpointer data)
 675 {
 676         int index, nr;
 677         GtkTreeIter iter;
 678         GtkListStore *model = cylinder_list.model;
 679         GtkTreeSelection *selection;
 680         struct dive *dive;
 681         cylinder_t *cyl;
 682
 683         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(cylinder_list.tree_view));
 684
 685         /* Nothing selected? This shouldn't happen, since the button should be inactive */
 686         if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 687                 return;
 688
 689         index = get_model_index(model, &iter);
 690
 691         dive = current_dive;
 692         if (!dive)
 693                 return;
 694         cyl = dive->cylinder + index;
 695         nr = cylinder_list.max_index - index - 1;
 696
 697         gtk_list_store_remove(model, &iter);
 698
 699         cylinder_list.max_index--;
 700         memmove(cyl, cyl+1, nr*sizeof(*cyl));
 701         memset(cyl+nr, 0, sizeof(*cyl));
 702
 703         mark_divelist_changed(TRUE);
 704         flush_divelist(dive);
 705
 706         gtk_widget_set_sensitive(cylinder_list.edit, 0);
 707         gtk_widget_set_sensitive(cylinder_list.del, 0);
 708         gtk_widget_set_sensitive(cylinder_list.add, 1);
 709 }
 710
 711 static GtkListStore *create_tank_size_model(void)
 712 {
 713         GtkListStore *model;
 714
 715         model = gtk_list_store_new(3,
 716                 G_TYPE_STRING,          /* Tank name */
 717                 G_TYPE_INT,             /* Tank size in mliter */
 718                 G_TYPE_INT,             /* Tank working pressure in mbar */
 719                 -1);
 720
 721         fill_tank_list(model);
 722         return model;
 723 }
 724
 725 static void size_data_func(GtkTreeViewColumn *col,
 726                            GtkCellRenderer *renderer,
 727                            GtkTreeModel *model,
 728                            GtkTreeIter *iter,
 729                            gpointer data)
 730 {
 731         int ml, mbar;
 732         double size, pressure;
 733         char buffer[10];
 734
 735         gtk_tree_model_get(model, iter, CYL_SIZE, &ml, CYL_WORKP, &mbar, -1);
 736         convert_volume_pressure(ml, mbar, &size, &pressure);
 737         if (size)
 738                 snprintf(buffer, sizeof(buffer), "%.1f", size);
 739         else
 740                 strcpy(buffer, "unkn");
 741         g_object_set(renderer, "text", buffer, NULL);
 742 }
 743
 744 static void pressure_data_func(GtkTreeViewColumn *col,
 745                            GtkCellRenderer *renderer,
 746                            GtkTreeModel *model,
 747                            GtkTreeIter *iter,
 748                            gpointer data)
 749 {
 750         int index = (long)data;
 751         int mbar, decimals;
 752         double pressure;
 753         char buffer[10];
 754
 755         gtk_tree_model_get(model, iter, index, &mbar, -1);
 756         decimals = convert_pressure(mbar, &pressure);
 757         if (mbar)
 758                 snprintf(buffer, sizeof(buffer), "%.*f", decimals, pressure);
 759         else
 760                 *buffer = 0;
 761         g_object_set(renderer, "text", buffer, NULL);
 762 }
 763
 764 static void percentage_data_func(GtkTreeViewColumn *col,
 765                            GtkCellRenderer *renderer,
 766                            GtkTreeModel *model,
 767                            GtkTreeIter *iter,
 768                            gpointer data)
 769 {
 770         int index = (long)data;
 771         int permille;
 772         char buffer[10];
 773
 774         gtk_tree_model_get(model, iter, index, &permille, -1);
 775         if (permille)
 776                 snprintf(buffer, sizeof(buffer), "%.1f%%", permille / 10.0);
 777         else
 778                 *buffer = 0;
 779         g_object_set(renderer, "text", buffer, NULL);
 780 }
 781
 782 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
 783 {
 784         GtkTreeIter iter;
 785         int selected;
 786
 787         selected = gtk_tree_selection_get_selected(selection, NULL, &iter);
 788         gtk_widget_set_sensitive(cylinder_list.edit, selected);
 789         gtk_widget_set_sensitive(cylinder_list.del, selected);
 790 }
 791
 792 static void row_activated_cb(GtkTreeView *tree_view,
 793                         GtkTreePath *path,
 794                         GtkTreeViewColumn *column,
 795                         GtkTreeModel *model)
 796 {
 797         edit_cb(NULL, NULL);
 798 }
 799
 800 static GtkWidget *cylinder_list_create(void)
 801 {
 802         GtkWidget *tree_view;
 803         GtkTreeSelection *selection;
 804         GtkListStore *model;
 805
 806         model = gtk_list_store_new(CYL_COLUMNS,
 807                 G_TYPE_STRING,          /* CYL_DESC: utf8 */
 808                 G_TYPE_INT,             /* CYL_SIZE: mliter */
 809                 G_TYPE_INT,             /* CYL_WORKP: mbar */
 810                 G_TYPE_INT,             /* CYL_STARTP: mbar */
 811                 G_TYPE_INT,             /* CYL_ENDP: mbar */
 812                 G_TYPE_INT,             /* CYL_O2: permille */
 813                 G_TYPE_INT              /* CYL_HE: permille */
 814                 );
 815         cylinder_list.model = model;
 816         tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(model));
 817         g_signal_connect(tree_view, "row-activated", G_CALLBACK(row_activated_cb), model);
 818
 819         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
 820         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_BROWSE);
 821         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), model);
 822
 823         g_object_set(G_OBJECT(tree_view), "headers-visible", TRUE,
 824                                           "enable-grid-lines", GTK_TREE_VIEW_GRID_LINES_BOTH,
 825                                           NULL);
 826
 827         cylinder_list.desc = tree_view_column(tree_view, CYL_DESC, "Type", NULL, PANGO_ALIGN_LEFT, TRUE);
 828         cylinder_list.size = tree_view_column(tree_view, CYL_SIZE, "Size", size_data_func, PANGO_ALIGN_RIGHT, TRUE);
 829         cylinder_list.workp = tree_view_column(tree_view, CYL_WORKP, "MaxPress", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 830         cylinder_list.startp = tree_view_column(tree_view, CYL_STARTP, "Start", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 831         cylinder_list.endp = tree_view_column(tree_view, CYL_ENDP, "End", pressure_data_func, PANGO_ALIGN_RIGHT, TRUE);
 832         cylinder_list.o2 = tree_view_column(tree_view, CYL_O2, "O" UTF8_SUBSCRIPT_2 "%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 833         cylinder_list.he = tree_view_column(tree_view, CYL_HE, "He%", percentage_data_func, PANGO_ALIGN_RIGHT, TRUE);
 834         return tree_view;
 835 }
 836
 837 GtkWidget *equipment_widget(void)
 838 {
 839         GtkWidget *vbox, *hbox, *frame, *framebox;
 840         GtkWidget *add, *del, *edit;
 841
 842         vbox = gtk_vbox_new(FALSE, 3);
 843
 844         /*
 845          * We create the cylinder size model at startup, since
 846          * we're going to share it across all cylinders and all
 847          * dives. So if you add a new cylinder type in one dive,
 848          * it will show up when you edit the cylinder types for
 849          * another dive.
 850          */
 851         cylinder_model = create_tank_size_model();
 852
 853         cylinder_list.tree_view = cylinder_list_create();
 854
 855         hbox = gtk_hbox_new(FALSE, 3);
 856         gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 3);
 857
 858         frame = gtk_frame_new("Cylinders");
 859         gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, FALSE, 3);
 860
 861         framebox = gtk_vbox_new(FALSE, 3);
 862         gtk_container_add(GTK_CONTAINER(frame), framebox);
 863
 864         hbox = gtk_hbox_new(FALSE, 3);
 865         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 866
 867         gtk_box_pack_start(GTK_BOX(hbox), cylinder_list.tree_view, TRUE, FALSE, 3);
 868
 869         hbox = gtk_hbox_new(TRUE, 3);
 870         gtk_box_pack_start(GTK_BOX(framebox), hbox, TRUE, FALSE, 3);
 871
 872         edit = gtk_button_new_from_stock(GTK_STOCK_EDIT);
 873         add = gtk_button_new_from_stock(GTK_STOCK_ADD);
 874         del = gtk_button_new_from_stock(GTK_STOCK_DELETE);
 875         gtk_box_pack_start(GTK_BOX(hbox), edit, FALSE, FALSE, 0);
 876         gtk_box_pack_start(GTK_BOX(hbox), add, FALSE, FALSE, 0);
 877         gtk_box_pack_start(GTK_BOX(hbox), del, FALSE, FALSE, 0);
 878
 879         cylinder_list.edit = edit;
 880         cylinder_list.add = add;
 881         cylinder_list.del = del;
 882
 883         g_signal_connect(edit, "clicked", G_CALLBACK(edit_cb), NULL);
 884         g_signal_connect(add, "clicked", G_CALLBACK(add_cb), NULL);
 885         g_signal_connect(del, "clicked", G_CALLBACK(del_cb), NULL);
 886
 887         return vbox;
 888 }