divelist.c

   1 /* divelist.c */
   2 /* this creates the UI for the dive list -
   3  * controlled through the following interfaces:
   4  *
   5  * void flush_divelist(struct dive *dive)
   6  * GtkWidget dive_list_create(void)
   7  * void dive_list_update_dives(void)
   8  * void update_dive_list_units(void)
   9  * void set_divelist_font(const char *font)
  10  * void mark_divelist_changed(int changed)
  11  * int unsaved_changes()
  12  */
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <string.h>
  16 #include <time.h>
  17 #include <math.h>
  18
  19 #include "divelist.h"
  20 #include "dive.h"
  21 #include "display.h"
  22 #include "display-gtk.h"
  23
  24 struct DiveList {
  25         GtkWidget    *tree_view;
  26         GtkWidget    *container_widget;
  27         GtkListStore *model;
  28         GtkTreeViewColumn *nr, *date, *stars, *depth, *duration, *location;
  29         GtkTreeViewColumn *temperature, *cylinder, *nitrox, *sac, *otu;
  30         int changed;
  31 };
  32
  33 static struct DiveList dive_list;
  34
  35 /*
  36  * The dive list has the dive data in both string format (for showing)
  37  * and in "raw" format (for sorting purposes)
  38  */
  39 enum {
  40         DIVE_INDEX = 0,
  41         DIVE_NR,                /* int: dive->nr */
  42         DIVE_DATE,              /* time_t: dive->when */
  43         DIVE_RATING,            /* int: 0-5 stars */
  44         DIVE_DEPTH,             /* int: dive->maxdepth in mm */
  45         DIVE_DURATION,          /* int: in seconds */
  46         DIVE_TEMPERATURE,       /* int: in mkelvin */
  47         DIVE_CYLINDER,
  48         DIVE_NITROX,            /* int: dummy */
  49         DIVE_SAC,               /* int: in ml/min */
  50         DIVE_OTU,               /* int: in OTUs */
  51         DIVE_LOCATION,          /* "2nd Cathedral, Lanai" */
  52         DIVELIST_COLUMNS
  53 };
  54
  55 static GList *selected_dives;
  56
  57 static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
  58 {
  59         GtkTreeIter iter;
  60         GValue value = {0, };
  61         GtkTreePath *path;
  62
  63         int nr_selected = gtk_tree_selection_count_selected_rows(selection);
  64
  65         if (selected_dives) {
  66                 g_list_foreach (selected_dives, (GFunc) gtk_tree_path_free, NULL);
  67                 g_list_free (selected_dives);
  68         }
  69         selected_dives = gtk_tree_selection_get_selected_rows(selection, NULL);
  70
  71         switch (nr_selected) {
  72         case 0: /* keep showing the last selected dive */
  73                 return;
  74         case 1:
  75                 /* just pick that dive as selected */
  76                 path = g_list_nth_data(selected_dives, 0);
  77                 if (gtk_tree_model_get_iter(model, &iter, path)) {
  78                         gtk_tree_model_get_value(model, &iter, DIVE_INDEX, &value);
  79                         selected_dive = g_value_get_int(&value);
  80                         repaint_dive();
  81                 }
  82                 return;
  83         default: /* multiple selections - what now? At this point I
  84                   * don't want to change the selected dive unless
  85                   * there is exactly one dive selected; not sure this
  86                   * is the most intuitive solution.
  87                   * I do however want to keep around which dives have
  88                   * been selected */
  89                 return;
  90         }
  91 }
  92
  93 const char *star_strings[] = {
  94         ZERO_STARS,
  95         ONE_STARS,
  96         TWO_STARS,
  97         THREE_STARS,
  98         FOUR_STARS,
  99         FIVE_STARS
 100 };
 101
 102 static void star_data_func(GtkTreeViewColumn *col,
 103                            GtkCellRenderer *renderer,
 104                            GtkTreeModel *model,
 105                            GtkTreeIter *iter,
 106                            gpointer data)
 107 {
 108         int nr_stars;
 109         char buffer[40];
 110
 111         gtk_tree_model_get(model, iter, DIVE_RATING, &nr_stars, -1);
 112         if (nr_stars < 0 || nr_stars > 5)
 113                 nr_stars = 0;
 114         snprintf(buffer, sizeof(buffer), "%s", star_strings[nr_stars]);
 115         g_object_set(renderer, "text", buffer, NULL);
 116 }
 117
 118 static void date_data_func(GtkTreeViewColumn *col,
 119                            GtkCellRenderer *renderer,
 120                            GtkTreeModel *model,
 121                            GtkTreeIter *iter,
 122                            gpointer data)
 123 {
 124         int val;
 125         struct tm *tm;
 126         time_t when;
 127         char buffer[40];
 128
 129         gtk_tree_model_get(model, iter, DIVE_DATE, &val, -1);
 130
 131         /* 2038 problem */
 132         when = val;
 133
 134         tm = gmtime(&when);
 135         snprintf(buffer, sizeof(buffer),
 136                 "%s, %s %d, %d %02d:%02d",
 137                 weekday(tm->tm_wday),
 138                 monthname(tm->tm_mon),
 139                 tm->tm_mday, tm->tm_year + 1900,
 140                 tm->tm_hour, tm->tm_min);
 141         g_object_set(renderer, "text", buffer, NULL);
 142 }
 143
 144 static void depth_data_func(GtkTreeViewColumn *col,
 145                             GtkCellRenderer *renderer,
 146                             GtkTreeModel *model,
 147                             GtkTreeIter *iter,
 148                             gpointer data)
 149 {
 150         int depth, integer, frac, len;
 151         char buffer[40];
 152
 153         gtk_tree_model_get(model, iter, DIVE_DEPTH, &depth, -1);
 154
 155         switch (output_units.length) {
 156         case METERS:
 157                 /* To tenths of meters */
 158                 depth = (depth + 49) / 100;
 159                 integer = depth / 10;
 160                 frac = depth % 10;
 161                 if (integer < 20)
 162                         break;
 163                 if (frac >= 5)
 164                         integer++;
 165                 frac = -1;
 166                 break;
 167         case FEET:
 168                 integer = mm_to_feet(depth) + 0.5;
 169                 frac = -1;
 170                 break;
 171         default:
 172                 return;
 173         }
 174         len = snprintf(buffer, sizeof(buffer), "%d", integer);
 175         if (frac >= 0)
 176                 len += snprintf(buffer+len, sizeof(buffer)-len, ".%d", frac);
 177
 178         g_object_set(renderer, "text", buffer, NULL);
 179 }
 180
 181 static void duration_data_func(GtkTreeViewColumn *col,
 182                                GtkCellRenderer *renderer,
 183                                GtkTreeModel *model,
 184                                GtkTreeIter *iter,
 185                                gpointer data)
 186 {
 187         unsigned int sec;
 188         char buffer[16];
 189
 190         gtk_tree_model_get(model, iter, DIVE_DURATION, &sec, -1);
 191         snprintf(buffer, sizeof(buffer), "%d:%02d", sec / 60, sec % 60);
 192
 193         g_object_set(renderer, "text", buffer, NULL);
 194 }
 195
 196 static void temperature_data_func(GtkTreeViewColumn *col,
 197                                   GtkCellRenderer *renderer,
 198                                   GtkTreeModel *model,
 199                                   GtkTreeIter *iter,
 200                                   gpointer data)
 201 {
 202         int value;
 203         char buffer[80];
 204
 205         gtk_tree_model_get(model, iter, DIVE_TEMPERATURE, &value, -1);
 206
 207         *buffer = 0;
 208         if (value) {
 209                 double deg;
 210                 switch (output_units.temperature) {
 211                 case CELSIUS:
 212                         deg = mkelvin_to_C(value);
 213                         break;
 214                 case FAHRENHEIT:
 215                         deg = mkelvin_to_F(value);
 216                         break;
 217                 default:
 218                         return;
 219                 }
 220                 snprintf(buffer, sizeof(buffer), "%.1f", deg);
 221         }
 222
 223         g_object_set(renderer, "text", buffer, NULL);
 224 }
 225
 226 /*
 227  * Get "maximal" dive gas for a dive.
 228  * Rules:
 229  *  - Trimix trumps nitrox (highest He wins, O2 breaks ties)
 230  *  - Nitrox trumps air (even if hypoxic)
 231  * These are the same rules as the inter-dive sorting rules.
 232  */
 233 static void get_dive_gas(struct dive *dive, int *o2, int *he)
 234 {
 235         int i;
 236         int maxo2 = -1, maxhe = -1;
 237
 238         for (i = 0; i < MAX_CYLINDERS; i++) {
 239                 struct gasmix *mix = &dive->cylinder[i].gasmix;
 240                 int o2 = mix->o2.permille;
 241                 int he = mix->he.permille;
 242
 243                 if (he > maxhe)
 244                         goto newmax;
 245                 if (he < maxhe)
 246                         continue;
 247                 if (o2 <= maxo2)
 248                         continue;
 249 newmax:
 250                 maxhe = he;
 251                 maxo2 = o2;
 252         }
 253         *o2 = maxo2;
 254         *he = maxhe;
 255 }
 256
 257 static gint nitrox_sort_func(GtkTreeModel *model,
 258         GtkTreeIter *iter_a,
 259         GtkTreeIter *iter_b,
 260         gpointer user_data)
 261 {
 262         int index_a, index_b;
 263         struct dive *a, *b;
 264         int a_o2, b_o2;
 265         int a_he, b_he;
 266
 267         gtk_tree_model_get(model, iter_a, DIVE_INDEX, &index_a, -1);
 268         gtk_tree_model_get(model, iter_b, DIVE_INDEX, &index_b, -1);
 269         a = get_dive(index_a);
 270         b = get_dive(index_b);
 271         get_dive_gas(a, &a_o2, &a_he);
 272         get_dive_gas(b, &b_o2, &b_he);
 273
 274         /* Sort by Helium first, O2 second */
 275         if (a_he == b_he)
 276                 return a_o2 - b_o2;
 277         return a_he - b_he;
 278 }
 279
 280 static void nitrox_data_func(GtkTreeViewColumn *col,
 281                              GtkCellRenderer *renderer,
 282                              GtkTreeModel *model,
 283                              GtkTreeIter *iter,
 284                              gpointer data)
 285 {
 286         int index, o2, he;
 287         char buffer[80];
 288         struct dive *dive;
 289
 290         gtk_tree_model_get(model, iter, DIVE_INDEX, &index, -1);
 291         dive = get_dive(index);
 292         get_dive_gas(dive, &o2, &he);
 293         o2 = (o2 + 5) / 10;
 294         he = (he + 5) / 10;
 295
 296         if (he)
 297                 snprintf(buffer, sizeof(buffer), "%d/%d", o2, he);
 298         else if (o2)
 299                 snprintf(buffer, sizeof(buffer), "%d", o2);
 300         else
 301                 strcpy(buffer, "air");
 302
 303         g_object_set(renderer, "text", buffer, NULL);
 304 }
 305
 306 /* Render the SAC data (integer value of "ml / min") */
 307 static void sac_data_func(GtkTreeViewColumn *col,
 308                           GtkCellRenderer *renderer,
 309                           GtkTreeModel *model,
 310                           GtkTreeIter *iter,
 311                           gpointer data)
 312 {
 313         int value;
 314         const char *fmt;
 315         char buffer[16];
 316         double sac;
 317
 318         gtk_tree_model_get(model, iter, DIVE_SAC, &value, -1);
 319
 320         if (!value) {
 321                 g_object_set(renderer, "text", "", NULL);
 322                 return;
 323         }
 324
 325         sac = value / 1000.0;
 326         switch (output_units.volume) {
 327         case LITER:
 328                 fmt = "%4.1f";
 329                 break;
 330         case CUFT:
 331                 fmt = "%4.2f";
 332                 sac = ml_to_cuft(sac * 1000);
 333                 break;
 334         }
 335         snprintf(buffer, sizeof(buffer), fmt, sac);
 336
 337         g_object_set(renderer, "text", buffer, NULL);
 338 }
 339
 340 /* Render the OTU data (integer value of "OTU") */
 341 static void otu_data_func(GtkTreeViewColumn *col,
 342                           GtkCellRenderer *renderer,
 343                           GtkTreeModel *model,
 344                           GtkTreeIter *iter,
 345                           gpointer data)
 346 {
 347         int value;
 348         char buffer[16];
 349
 350         gtk_tree_model_get(model, iter, DIVE_OTU, &value, -1);
 351
 352         if (!value) {
 353                 g_object_set(renderer, "text", "", NULL);
 354                 return;
 355         }
 356
 357         snprintf(buffer, sizeof(buffer), "%d", value);
 358
 359         g_object_set(renderer, "text", buffer, NULL);
 360 }
 361
 362 /* calculate OTU for a dive */
 363 static int calculate_otu(struct dive *dive)
 364 {
 365         int i;
 366         double otu = 0.0;
 367
 368         for (i = 1; i < dive->samples; i++) {
 369                 int t;
 370                 double po2;
 371                 struct sample *sample = dive->sample + i;
 372                 struct sample *psample = sample - 1;
 373                 t = sample->time.seconds - psample->time.seconds;
 374                 po2 = dive->cylinder[sample->cylinderindex].gasmix.o2.permille / 1000.0 *
 375                         (sample->depth.mm + 10000) / 10000.0;
 376                 if (po2 >= 0.5)
 377                         otu += pow(po2 - 0.5, 0.83) * t / 30.0;
 378         }
 379         return otu + 0.5;
 380 }
 381 /*
 382  * Return air usage (in liters).
 383  */
 384 static double calculate_airuse(struct dive *dive)
 385 {
 386         double airuse = 0;
 387         int i;
 388
 389         for (i = 0; i < MAX_CYLINDERS; i++) {
 390                 pressure_t start, end;
 391                 cylinder_t *cyl = dive->cylinder + i;
 392                 int size = cyl->type.size.mliter;
 393                 double kilo_atm;
 394
 395                 if (!size)
 396                         continue;
 397
 398                 start = cyl->start.mbar ? cyl->start : cyl->sample_start;
 399                 end = cyl->end.mbar ? cyl->end : cyl->sample_end;
 400                 kilo_atm = (to_ATM(start) - to_ATM(end)) / 1000.0;
 401
 402                 /* Liters of air at 1 atm == milliliters at 1k atm*/
 403                 airuse += kilo_atm * size;
 404         }
 405         return airuse;
 406 }
 407
 408 static int calculate_sac(struct dive *dive)
 409 {
 410         double airuse, pressure, sac;
 411         int duration, i;
 412
 413         airuse = calculate_airuse(dive);
 414         if (!airuse)
 415                 return 0;
 416         if (!dive->duration.seconds)
 417                 return 0;
 418
 419         /* find and eliminate long surface intervals */
 420         duration = dive->duration.seconds;
 421         for (i = 0; i < dive->samples; i++) {
 422                 if (dive->sample[i].depth.mm < 100) { /* less than 10cm */
 423                         int end = i + 1;
 424                         while (end < dive->samples && dive->sample[end].depth.mm < 100)
 425                                 end++;
 426                         /* we only want the actual surface time during a dive */
 427                         if (end < dive->samples) {
 428                                 end--;
 429                                 duration -= dive->sample[end].time.seconds -
 430                                                 dive->sample[i].time.seconds;
 431                                 i = end + 1;
 432                         }
 433                 }
 434         }
 435         /* Mean pressure in atm: 1 atm per 10m */
 436         pressure = 1 + (dive->meandepth.mm / 10000.0);
 437         sac = airuse / pressure * 60 / duration;
 438
 439         /* milliliters per minute.. */
 440         return sac * 1000;
 441 }
 442
 443 void update_cylinder_related_info(struct dive *dive)
 444 {
 445         if (dive != NULL) {
 446                 dive->sac = calculate_sac(dive);
 447                 dive->otu = calculate_otu(dive);
 448         }
 449 }
 450
 451 static void get_string(char **str, const char *s)
 452 {
 453         int len;
 454         char *n;
 455
 456         if (!s)
 457                 s = "";
 458         len = strlen(s);
 459         if (len > 60)
 460                 len = 60;
 461         n = malloc(len+1);
 462         memcpy(n, s, len);
 463         n[len] = 0;
 464         *str = n;
 465 }
 466
 467 static void get_location(struct dive *dive, char **str)
 468 {
 469         get_string(str, dive->location);
 470 }
 471
 472 static void get_cylinder(struct dive *dive, char **str)
 473 {
 474         get_string(str, dive->cylinder[0].type.description);
 475 }
 476
 477 /*
 478  * Set up anything that could have changed due to editing
 479  * of dive information
 480  */
 481 static void fill_one_dive(struct dive *dive,
 482                           GtkTreeModel *model,
 483                           GtkTreeIter *iter)
 484 {
 485         char *location, *cylinder;
 486
 487         get_cylinder(dive, &cylinder);
 488         get_location(dive, &location);
 489
 490         gtk_list_store_set(GTK_LIST_STORE(model), iter,
 491                 DIVE_NR, dive->number,
 492                 DIVE_LOCATION, location,
 493                 DIVE_CYLINDER, cylinder,
 494                 DIVE_RATING, dive->rating,
 495                 DIVE_SAC, dive->sac,
 496                 DIVE_OTU, dive->otu,
 497                 -1);
 498 }
 499
 500 static gboolean set_one_dive(GtkTreeModel *model,
 501                              GtkTreePath *path,
 502                              GtkTreeIter *iter,
 503                              gpointer data)
 504 {
 505         GValue value = {0, };
 506         struct dive *dive;
 507
 508         /* Get the dive number */
 509         gtk_tree_model_get_value(model, iter, DIVE_INDEX, &value);
 510         dive = get_dive(g_value_get_int(&value));
 511         if (!dive)
 512                 return TRUE;
 513         if (data && dive != data)
 514                 return FALSE;
 515
 516         fill_one_dive(dive, model, iter);
 517         return dive == data;
 518 }
 519
 520 void flush_divelist(struct dive *dive)
 521 {
 522         GtkTreeModel *model = GTK_TREE_MODEL(dive_list.model);
 523
 524         gtk_tree_model_foreach(model, set_one_dive, dive);
 525 }
 526
 527 void set_divelist_font(const char *font)
 528 {
 529         PangoFontDescription *font_desc = pango_font_description_from_string(font);
 530         gtk_widget_modify_font(dive_list.tree_view, font_desc);
 531         pango_font_description_free(font_desc);
 532 }
 533
 534 void update_dive_list_units(void)
 535 {
 536         const char *unit;
 537         GtkTreeModel *model = GTK_TREE_MODEL(dive_list.model);
 538
 539         (void) get_depth_units(0, NULL, &unit);
 540         gtk_tree_view_column_set_title(dive_list.depth, unit);
 541
 542         (void) get_temp_units(0, &unit);
 543         gtk_tree_view_column_set_title(dive_list.temperature, unit);
 544
 545         gtk_tree_model_foreach(model, set_one_dive, NULL);
 546 }
 547
 548 void update_dive_list_col_visibility(void)
 549 {
 550         gtk_tree_view_column_set_visible(dive_list.cylinder, visible_cols.cylinder);
 551         gtk_tree_view_column_set_visible(dive_list.temperature, visible_cols.temperature);
 552         gtk_tree_view_column_set_visible(dive_list.nitrox, visible_cols.nitrox);
 553         gtk_tree_view_column_set_visible(dive_list.sac, visible_cols.sac);
 554         gtk_tree_view_column_set_visible(dive_list.otu, visible_cols.otu);
 555         return;
 556 }
 557
 558 static void fill_dive_list(void)
 559 {
 560         int i;
 561         GtkTreeIter iter;
 562         GtkListStore *store;
 563
 564         store = GTK_LIST_STORE(dive_list.model);
 565
 566         i = dive_table.nr;
 567         while (--i >= 0) {
 568                 struct dive *dive = dive_table.dives[i];
 569
 570                 update_cylinder_related_info(dive);
 571                 gtk_list_store_append(store, &iter);
 572                 gtk_list_store_set(store, &iter,
 573                         DIVE_INDEX, i,
 574                         DIVE_NR, dive->number,
 575                         DIVE_DATE, dive->when,
 576                         DIVE_DEPTH, dive->maxdepth,
 577                         DIVE_DURATION, dive->duration.seconds,
 578                         DIVE_LOCATION, "location",
 579                         DIVE_TEMPERATURE, dive->watertemp.mkelvin,
 580                         DIVE_SAC, 0,
 581                         -1);
 582         }
 583
 584         update_dive_list_units();
 585         if (gtk_tree_model_get_iter_first(GTK_TREE_MODEL(dive_list.model), &iter)) {
 586                 GtkTreeSelection *selection;
 587                 selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dive_list.tree_view));
 588                 gtk_tree_selection_select_iter(selection, &iter);
 589         }
 590 }
 591
 592 void dive_list_update_dives(void)
 593 {
 594         gtk_list_store_clear(GTK_LIST_STORE(dive_list.model));
 595         fill_dive_list();
 596         repaint_dive();
 597 }
 598
 599 static struct divelist_column {
 600         const char *header;
 601         data_func_t data;
 602         sort_func_t sort;
 603         unsigned int flags;
 604         int *visible;
 605 } column[] = {
 606         [DIVE_NR] = { "#", NULL, NULL, ALIGN_RIGHT | UNSORTABLE },
 607         [DIVE_DATE] = { "Date", date_data_func, NULL, ALIGN_LEFT },
 608         [DIVE_RATING] = { UTF8_BLACKSTAR, star_data_func, NULL, ALIGN_LEFT },
 609         [DIVE_DEPTH] = { "ft", depth_data_func, NULL, ALIGN_RIGHT },
 610         [DIVE_DURATION] = { "min", duration_data_func, NULL, ALIGN_RIGHT },
 611         [DIVE_TEMPERATURE] = { UTF8_DEGREE "F", temperature_data_func, NULL, ALIGN_RIGHT, &visible_cols.temperature },
 612         [DIVE_CYLINDER] = { "Cyl", NULL, NULL, 0, &visible_cols.cylinder },
 613         [DIVE_NITROX] = { "O" UTF8_SUBSCRIPT_2 "%", nitrox_data_func, nitrox_sort_func, 0, &visible_cols.nitrox },
 614         [DIVE_SAC] = { "SAC", sac_data_func, NULL, 0, &visible_cols.sac },
 615         [DIVE_OTU] = { "OTU", otu_data_func, NULL, 0, &visible_cols.otu },
 616         [DIVE_LOCATION] = { "Location", NULL, NULL, ALIGN_LEFT },
 617 };
 618
 619
 620 static GtkTreeViewColumn *divelist_column(struct DiveList *dl, struct divelist_column *col)
 621 {
 622         int index = col - &column[0];
 623         const char *title = col->header;
 624         data_func_t data_func = col->data;
 625         sort_func_t sort_func = col->sort;
 626         unsigned int flags = col->flags;
 627         int *visible = col->visible;
 628         GtkWidget *tree_view = dl->tree_view;
 629         GtkListStore *model = dl->model;
 630         GtkTreeViewColumn *ret;
 631
 632         if (visible && !*visible)
 633                 flags |= INVISIBLE;
 634         ret = tree_view_column(tree_view, index, title, data_func, flags);
 635         if (sort_func)
 636                 gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(model), index, sort_func, NULL, NULL);
 637         return ret;
 638 }
 639
 640 /*
 641  * This is some crazy crap. The only way to get default focus seems
 642  * to be to grab focus as the widget is being shown the first time.
 643  */
 644 static void realize_cb(GtkWidget *tree_view, gpointer userdata)
 645 {
 646         gtk_widget_grab_focus(tree_view);
 647 }
 648
 649 static void row_activated_cb(GtkTreeView *tree_view,
 650                         GtkTreePath *path,
 651                         GtkTreeViewColumn *column,
 652                         GtkTreeModel *model)
 653 {
 654         int index;
 655         GtkTreeIter iter;
 656
 657         if (!gtk_tree_model_get_iter(model, &iter, path))
 658                 return;
 659         gtk_tree_model_get(model, &iter, DIVE_INDEX, &index, -1);
 660         edit_dive_info(get_dive(index));
 661 }
 662
 663 GtkWidget *dive_list_create(void)
 664 {
 665         GtkTreeSelection  *selection;
 666
 667         dive_list.model = gtk_list_store_new(DIVELIST_COLUMNS,
 668                                 G_TYPE_INT,                     /* index */
 669                                 G_TYPE_INT,                     /* nr */
 670                                 G_TYPE_INT,                     /* Date */
 671                                 G_TYPE_INT,                     /* Star rating */
 672                                 G_TYPE_INT,                     /* Depth */
 673                                 G_TYPE_INT,                     /* Duration */
 674                                 G_TYPE_INT,                     /* Temperature */
 675                                 G_TYPE_STRING,                  /* Cylinder */
 676                                 G_TYPE_INT,                     /* Nitrox */
 677                                 G_TYPE_INT,                     /* SAC */
 678                                 G_TYPE_INT,                     /* OTU */
 679                                 G_TYPE_STRING                   /* Location */
 680                                 );
 681         dive_list.tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(dive_list.model));
 682         set_divelist_font(divelist_font);
 683
 684         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dive_list.tree_view));
 685
 686         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_MULTIPLE);
 687         gtk_widget_set_size_request(dive_list.tree_view, 200, 200);
 688
 689         dive_list.nr = divelist_column(&dive_list, column + DIVE_NR);
 690         dive_list.date = divelist_column(&dive_list, column + DIVE_DATE);
 691         dive_list.stars = divelist_column(&dive_list, column + DIVE_RATING);
 692         dive_list.depth = divelist_column(&dive_list, column + DIVE_DEPTH);
 693         dive_list.duration = divelist_column(&dive_list, column + DIVE_DURATION);
 694         dive_list.temperature = divelist_column(&dive_list, column + DIVE_TEMPERATURE);
 695         dive_list.cylinder = divelist_column(&dive_list, column + DIVE_CYLINDER);
 696         dive_list.nitrox = divelist_column(&dive_list, column + DIVE_NITROX);
 697         dive_list.sac = divelist_column(&dive_list, column + DIVE_SAC);
 698         dive_list.otu = divelist_column(&dive_list, column + DIVE_OTU);
 699         dive_list.location = divelist_column(&dive_list, column + DIVE_LOCATION);
 700
 701         fill_dive_list();
 702
 703         g_object_set(G_OBJECT(dive_list.tree_view), "headers-visible", TRUE,
 704                                           "search-column", DIVE_LOCATION,
 705                                           "rules-hint", TRUE,
 706                                           NULL);
 707
 708         g_signal_connect_after(dive_list.tree_view, "realize", G_CALLBACK(realize_cb), NULL);
 709         g_signal_connect(dive_list.tree_view, "row-activated", G_CALLBACK(row_activated_cb), dive_list.model);
 710         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), dive_list.model);
 711
 712         dive_list.container_widget = gtk_scrolled_window_new(NULL, NULL);
 713         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(dive_list.container_widget),
 714                                GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 715         gtk_container_add(GTK_CONTAINER(dive_list.container_widget), dive_list.tree_view);
 716
 717         dive_list.changed = 0;
 718
 719         return dive_list.container_widget;
 720 }
 721
 722 void mark_divelist_changed(int changed)
 723 {
 724         dive_list.changed = changed;
 725 }
 726
 727 int unsaved_changes()
 728 {
 729         return dive_list.changed;
 730 }