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 /* Get max O2/He permille levels for a dive for the dive summary */
 227 static void get_dive_gas(struct dive *dive, int *o2, int *he)
 228 {
 229         int i;
 230         int maxo2 = -1, maxhe = -1;
 231
 232         for (i = 0; i < MAX_CYLINDERS; i++) {
 233                 struct gasmix *mix = &dive->cylinder[i].gasmix;
 234                 if (mix->o2.permille > maxo2)
 235                         maxo2 = mix->o2.permille;
 236                 if (mix->he.permille > maxhe)
 237                         maxhe = mix->he.permille;
 238         }
 239         *o2 = maxo2;
 240         *he = maxhe;
 241 }
 242
 243 static gint nitrox_sort_func(GtkTreeModel *model,
 244         GtkTreeIter *iter_a,
 245         GtkTreeIter *iter_b,
 246         gpointer user_data)
 247 {
 248         int index_a, index_b;
 249         struct dive *a, *b;
 250         int a_o2, b_o2;
 251         int a_he, b_he;
 252
 253         gtk_tree_model_get(model, iter_a, DIVE_INDEX, &index_a, -1);
 254         gtk_tree_model_get(model, iter_b, DIVE_INDEX, &index_b, -1);
 255         a = get_dive(index_a);
 256         b = get_dive(index_b);
 257         get_dive_gas(a, &a_o2, &a_he);
 258         get_dive_gas(b, &b_o2, &b_he);
 259
 260         /* Sort by Helium first, O2 second */
 261         if (a_he == b_he)
 262                 return a_o2 - b_o2;
 263         return a_he - b_he;
 264 }
 265
 266 static void nitrox_data_func(GtkTreeViewColumn *col,
 267                              GtkCellRenderer *renderer,
 268                              GtkTreeModel *model,
 269                              GtkTreeIter *iter,
 270                              gpointer data)
 271 {
 272         int index, o2, he;
 273         char buffer[80];
 274         struct dive *dive;
 275
 276         gtk_tree_model_get(model, iter, DIVE_INDEX, &index, -1);
 277         dive = get_dive(index);
 278         get_dive_gas(dive, &o2, &he);
 279         o2 = (o2 + 5) / 10;
 280         he = (he + 5) / 10;
 281
 282         if (he)
 283                 snprintf(buffer, sizeof(buffer), "%d/%d", o2, he);
 284         else if (o2)
 285                 snprintf(buffer, sizeof(buffer), "%d", o2);
 286         else
 287                 strcpy(buffer, "air");
 288
 289         g_object_set(renderer, "text", buffer, NULL);
 290 }
 291
 292 /* Render the SAC data (integer value of "ml / min") */
 293 static void sac_data_func(GtkTreeViewColumn *col,
 294                           GtkCellRenderer *renderer,
 295                           GtkTreeModel *model,
 296                           GtkTreeIter *iter,
 297                           gpointer data)
 298 {
 299         int value;
 300         const char *fmt;
 301         char buffer[16];
 302         double sac;
 303
 304         gtk_tree_model_get(model, iter, DIVE_SAC, &value, -1);
 305
 306         if (!value) {
 307                 g_object_set(renderer, "text", "", NULL);
 308                 return;
 309         }
 310
 311         sac = value / 1000.0;
 312         switch (output_units.volume) {
 313         case LITER:
 314                 fmt = "%4.1f";
 315                 break;
 316         case CUFT:
 317                 fmt = "%4.2f";
 318                 sac = ml_to_cuft(sac * 1000);
 319                 break;
 320         }
 321         snprintf(buffer, sizeof(buffer), fmt, sac);
 322
 323         g_object_set(renderer, "text", buffer, NULL);
 324 }
 325
 326 /* Render the OTU data (integer value of "OTU") */
 327 static void otu_data_func(GtkTreeViewColumn *col,
 328                           GtkCellRenderer *renderer,
 329                           GtkTreeModel *model,
 330                           GtkTreeIter *iter,
 331                           gpointer data)
 332 {
 333         int value;
 334         char buffer[16];
 335
 336         gtk_tree_model_get(model, iter, DIVE_OTU, &value, -1);
 337
 338         if (!value) {
 339                 g_object_set(renderer, "text", "", NULL);
 340                 return;
 341         }
 342
 343         snprintf(buffer, sizeof(buffer), "%d", value);
 344
 345         g_object_set(renderer, "text", buffer, NULL);
 346 }
 347
 348 /* calculate OTU for a dive */
 349 static int calculate_otu(struct dive *dive)
 350 {
 351         int i;
 352         double otu = 0.0;
 353
 354         for (i = 1; i < dive->samples; i++) {
 355                 int t;
 356                 double po2;
 357                 struct sample *sample = dive->sample + i;
 358                 struct sample *psample = sample - 1;
 359                 t = sample->time.seconds - psample->time.seconds;
 360                 po2 = dive->cylinder[sample->cylinderindex].gasmix.o2.permille / 1000.0 *
 361                         (sample->depth.mm + 10000) / 10000.0;
 362                 if (po2 >= 0.5)
 363                         otu += pow(po2 - 0.5, 0.83) * t / 30.0;
 364         }
 365         return otu + 0.5;
 366 }
 367 /*
 368  * Return air usage (in liters).
 369  */
 370 static double calculate_airuse(struct dive *dive)
 371 {
 372         double airuse = 0;
 373         int i;
 374
 375         for (i = 0; i < MAX_CYLINDERS; i++) {
 376                 pressure_t start, end;
 377                 cylinder_t *cyl = dive->cylinder + i;
 378                 int size = cyl->type.size.mliter;
 379                 double kilo_atm;
 380
 381                 if (!size)
 382                         continue;
 383
 384                 start = cyl->start.mbar ? cyl->start : cyl->sample_start;
 385                 end = cyl->end.mbar ? cyl->end : cyl->sample_end;
 386                 kilo_atm = (to_ATM(start) - to_ATM(end)) / 1000.0;
 387
 388                 /* Liters of air at 1 atm == milliliters at 1k atm*/
 389                 airuse += kilo_atm * size;
 390         }
 391         return airuse;
 392 }
 393
 394 static int calculate_sac(struct dive *dive)
 395 {
 396         double airuse, pressure, sac;
 397         int duration, i;
 398
 399         airuse = calculate_airuse(dive);
 400         if (!airuse)
 401                 return 0;
 402         if (!dive->duration.seconds)
 403                 return 0;
 404
 405         /* find and eliminate long surface intervals */
 406         duration = dive->duration.seconds;
 407         for (i = 0; i < dive->samples; i++) {
 408                 if (dive->sample[i].depth.mm < 100) { /* less than 10cm */
 409                         int end = i + 1;
 410                         while (end < dive->samples && dive->sample[end].depth.mm < 100)
 411                                 end++;
 412                         /* we only want the actual surface time during a dive */
 413                         if (end < dive->samples) {
 414                                 end--;
 415                                 duration -= dive->sample[end].time.seconds -
 416                                                 dive->sample[i].time.seconds;
 417                                 i = end + 1;
 418                         }
 419                 }
 420         }
 421         /* Mean pressure in atm: 1 atm per 10m */
 422         pressure = 1 + (dive->meandepth.mm / 10000.0);
 423         sac = airuse / pressure * 60 / duration;
 424
 425         /* milliliters per minute.. */
 426         return sac * 1000;
 427 }
 428
 429 void update_cylinder_related_info(struct dive *dive)
 430 {
 431         if (dive != NULL) {
 432                 dive->sac = calculate_sac(dive);
 433                 dive->otu = calculate_otu(dive);
 434         }
 435 }
 436
 437 static void get_string(char **str, const char *s)
 438 {
 439         int len;
 440         char *n;
 441
 442         if (!s)
 443                 s = "";
 444         len = strlen(s);
 445         if (len > 60)
 446                 len = 60;
 447         n = malloc(len+1);
 448         memcpy(n, s, len);
 449         n[len] = 0;
 450         *str = n;
 451 }
 452
 453 static void get_location(struct dive *dive, char **str)
 454 {
 455         get_string(str, dive->location);
 456 }
 457
 458 static void get_cylinder(struct dive *dive, char **str)
 459 {
 460         get_string(str, dive->cylinder[0].type.description);
 461 }
 462
 463 /*
 464  * Set up anything that could have changed due to editing
 465  * of dive information
 466  */
 467 static void fill_one_dive(struct dive *dive,
 468                           GtkTreeModel *model,
 469                           GtkTreeIter *iter)
 470 {
 471         char *location, *cylinder;
 472
 473         get_cylinder(dive, &cylinder);
 474         get_location(dive, &location);
 475
 476         gtk_list_store_set(GTK_LIST_STORE(model), iter,
 477                 DIVE_NR, dive->number,
 478                 DIVE_LOCATION, location,
 479                 DIVE_CYLINDER, cylinder,
 480                 DIVE_RATING, dive->rating,
 481                 DIVE_SAC, dive->sac,
 482                 DIVE_OTU, dive->otu,
 483                 -1);
 484 }
 485
 486 static gboolean set_one_dive(GtkTreeModel *model,
 487                              GtkTreePath *path,
 488                              GtkTreeIter *iter,
 489                              gpointer data)
 490 {
 491         GValue value = {0, };
 492         struct dive *dive;
 493
 494         /* Get the dive number */
 495         gtk_tree_model_get_value(model, iter, DIVE_INDEX, &value);
 496         dive = get_dive(g_value_get_int(&value));
 497         if (!dive)
 498                 return TRUE;
 499         if (data && dive != data)
 500                 return FALSE;
 501
 502         fill_one_dive(dive, model, iter);
 503         return dive == data;
 504 }
 505
 506 void flush_divelist(struct dive *dive)
 507 {
 508         GtkTreeModel *model = GTK_TREE_MODEL(dive_list.model);
 509
 510         gtk_tree_model_foreach(model, set_one_dive, dive);
 511 }
 512
 513 void set_divelist_font(const char *font)
 514 {
 515         PangoFontDescription *font_desc = pango_font_description_from_string(font);
 516         gtk_widget_modify_font(dive_list.tree_view, font_desc);
 517         pango_font_description_free(font_desc);
 518 }
 519
 520 void update_dive_list_units(void)
 521 {
 522         const char *unit;
 523         GtkTreeModel *model = GTK_TREE_MODEL(dive_list.model);
 524
 525         (void) get_depth_units(0, NULL, &unit);
 526         gtk_tree_view_column_set_title(dive_list.depth, unit);
 527
 528         (void) get_temp_units(0, &unit);
 529         gtk_tree_view_column_set_title(dive_list.temperature, unit);
 530
 531         gtk_tree_model_foreach(model, set_one_dive, NULL);
 532 }
 533
 534 void update_dive_list_col_visibility(void)
 535 {
 536         gtk_tree_view_column_set_visible(dive_list.cylinder, visible_cols.cylinder);
 537         gtk_tree_view_column_set_visible(dive_list.temperature, visible_cols.temperature);
 538         gtk_tree_view_column_set_visible(dive_list.nitrox, visible_cols.nitrox);
 539         gtk_tree_view_column_set_visible(dive_list.sac, visible_cols.sac);
 540         gtk_tree_view_column_set_visible(dive_list.otu, visible_cols.otu);
 541         return;
 542 }
 543
 544 static void fill_dive_list(void)
 545 {
 546         int i;
 547         GtkTreeIter iter;
 548         GtkListStore *store;
 549
 550         store = GTK_LIST_STORE(dive_list.model);
 551
 552         i = dive_table.nr;
 553         while (--i >= 0) {
 554                 struct dive *dive = dive_table.dives[i];
 555
 556                 update_cylinder_related_info(dive);
 557                 gtk_list_store_append(store, &iter);
 558                 gtk_list_store_set(store, &iter,
 559                         DIVE_INDEX, i,
 560                         DIVE_NR, dive->number,
 561                         DIVE_DATE, dive->when,
 562                         DIVE_DEPTH, dive->maxdepth,
 563                         DIVE_DURATION, dive->duration.seconds,
 564                         DIVE_LOCATION, "location",
 565                         DIVE_TEMPERATURE, dive->watertemp.mkelvin,
 566                         DIVE_SAC, 0,
 567                         -1);
 568         }
 569
 570         update_dive_list_units();
 571         if (gtk_tree_model_get_iter_first(GTK_TREE_MODEL(dive_list.model), &iter)) {
 572                 GtkTreeSelection *selection;
 573                 selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dive_list.tree_view));
 574                 gtk_tree_selection_select_iter(selection, &iter);
 575         }
 576 }
 577
 578 void dive_list_update_dives(void)
 579 {
 580         gtk_list_store_clear(GTK_LIST_STORE(dive_list.model));
 581         fill_dive_list();
 582         repaint_dive();
 583 }
 584
 585 static struct divelist_column {
 586         const char *header;
 587         data_func_t data;
 588         sort_func_t sort;
 589         unsigned int flags;
 590         int *visible;
 591 } column[] = {
 592         [DIVE_NR] = { "#", NULL, NULL, ALIGN_RIGHT | UNSORTABLE },
 593         [DIVE_DATE] = { "Date", date_data_func, NULL, ALIGN_LEFT },
 594         [DIVE_RATING] = { UTF8_BLACKSTAR, star_data_func, NULL, ALIGN_LEFT },
 595         [DIVE_DEPTH] = { "ft", depth_data_func, NULL, ALIGN_RIGHT },
 596         [DIVE_DURATION] = { "min", duration_data_func, NULL, ALIGN_RIGHT },
 597         [DIVE_TEMPERATURE] = { UTF8_DEGREE "F", temperature_data_func, NULL, ALIGN_RIGHT, &visible_cols.temperature },
 598         [DIVE_CYLINDER] = { "Cyl", NULL, NULL, 0, &visible_cols.cylinder },
 599         [DIVE_NITROX] = { "O" UTF8_SUBSCRIPT_2 "%", nitrox_data_func, nitrox_sort_func, 0, &visible_cols.nitrox },
 600         [DIVE_SAC] = { "SAC", sac_data_func, NULL, 0, &visible_cols.sac },
 601         [DIVE_OTU] = { "OTU", otu_data_func, NULL, 0, &visible_cols.otu },
 602         [DIVE_LOCATION] = { "Location", NULL, NULL, ALIGN_LEFT },
 603 };
 604
 605
 606 static GtkTreeViewColumn *divelist_column(struct DiveList *dl, struct divelist_column *col)
 607 {
 608         int index = col - &column[0];
 609         const char *title = col->header;
 610         data_func_t data_func = col->data;
 611         sort_func_t sort_func = col->sort;
 612         unsigned int flags = col->flags;
 613         int *visible = col->visible;
 614         GtkWidget *tree_view = dl->tree_view;
 615         GtkListStore *model = dl->model;
 616         GtkTreeViewColumn *ret;
 617
 618         if (visible && !*visible)
 619                 flags |= INVISIBLE;
 620         ret = tree_view_column(tree_view, index, title, data_func, flags);
 621         if (sort_func)
 622                 gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(model), index, sort_func, NULL, NULL);
 623         return ret;
 624 }
 625
 626 /*
 627  * This is some crazy crap. The only way to get default focus seems
 628  * to be to grab focus as the widget is being shown the first time.
 629  */
 630 static void realize_cb(GtkWidget *tree_view, gpointer userdata)
 631 {
 632         gtk_widget_grab_focus(tree_view);
 633 }
 634
 635 static void row_activated_cb(GtkTreeView *tree_view,
 636                         GtkTreePath *path,
 637                         GtkTreeViewColumn *column,
 638                         GtkTreeModel *model)
 639 {
 640         int index;
 641         GtkTreeIter iter;
 642
 643         if (!gtk_tree_model_get_iter(model, &iter, path))
 644                 return;
 645         gtk_tree_model_get(model, &iter, DIVE_INDEX, &index, -1);
 646         edit_dive_info(get_dive(index));
 647 }
 648
 649 GtkWidget *dive_list_create(void)
 650 {
 651         GtkTreeSelection  *selection;
 652
 653         dive_list.model = gtk_list_store_new(DIVELIST_COLUMNS,
 654                                 G_TYPE_INT,                     /* index */
 655                                 G_TYPE_INT,                     /* nr */
 656                                 G_TYPE_INT,                     /* Date */
 657                                 G_TYPE_INT,                     /* Star rating */
 658                                 G_TYPE_INT,                     /* Depth */
 659                                 G_TYPE_INT,                     /* Duration */
 660                                 G_TYPE_INT,                     /* Temperature */
 661                                 G_TYPE_STRING,                  /* Cylinder */
 662                                 G_TYPE_INT,                     /* Nitrox */
 663                                 G_TYPE_INT,                     /* SAC */
 664                                 G_TYPE_INT,                     /* OTU */
 665                                 G_TYPE_STRING                   /* Location */
 666                                 );
 667         dive_list.tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(dive_list.model));
 668         set_divelist_font(divelist_font);
 669
 670         selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dive_list.tree_view));
 671
 672         gtk_tree_selection_set_mode(GTK_TREE_SELECTION(selection), GTK_SELECTION_MULTIPLE);
 673         gtk_widget_set_size_request(dive_list.tree_view, 200, 200);
 674
 675         dive_list.nr = divelist_column(&dive_list, column + DIVE_NR);
 676         dive_list.date = divelist_column(&dive_list, column + DIVE_DATE);
 677         dive_list.stars = divelist_column(&dive_list, column + DIVE_RATING);
 678         dive_list.depth = divelist_column(&dive_list, column + DIVE_DEPTH);
 679         dive_list.duration = divelist_column(&dive_list, column + DIVE_DURATION);
 680         dive_list.temperature = divelist_column(&dive_list, column + DIVE_TEMPERATURE);
 681         dive_list.cylinder = divelist_column(&dive_list, column + DIVE_CYLINDER);
 682         dive_list.nitrox = divelist_column(&dive_list, column + DIVE_NITROX);
 683         dive_list.sac = divelist_column(&dive_list, column + DIVE_SAC);
 684         dive_list.otu = divelist_column(&dive_list, column + DIVE_OTU);
 685         dive_list.location = divelist_column(&dive_list, column + DIVE_LOCATION);
 686
 687         fill_dive_list();
 688
 689         g_object_set(G_OBJECT(dive_list.tree_view), "headers-visible", TRUE,
 690                                           "search-column", DIVE_LOCATION,
 691                                           "rules-hint", TRUE,
 692                                           NULL);
 693
 694         g_signal_connect_after(dive_list.tree_view, "realize", G_CALLBACK(realize_cb), NULL);
 695         g_signal_connect(dive_list.tree_view, "row-activated", G_CALLBACK(row_activated_cb), dive_list.model);
 696         g_signal_connect(selection, "changed", G_CALLBACK(selection_cb), dive_list.model);
 697
 698         dive_list.container_widget = gtk_scrolled_window_new(NULL, NULL);
 699         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(dive_list.container_widget),
 700                                GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
 701         gtk_container_add(GTK_CONTAINER(dive_list.container_widget), dive_list.tree_view);
 702
 703         dive_list.changed = 0;
 704
 705         return dive_list.container_widget;
 706 }
 707
 708 void mark_divelist_changed(int changed)
 709 {
 710         dive_list.changed = changed;
 711 }
 712
 713 int unsaved_changes()
 714 {
 715         return dive_list.changed;
 716 }