+ struct dive *dive;
+
+ printf("currently selected are %d dives:", amount_selected);
+ for_each_dive(i, dive) {
+ if (dive->selected)
+ printf(" %d", i);
+ }
+ printf("\n");
+}
+#endif
+
+/* when subsurface starts we want to have the last dive selected. So we simply
+ walk to the first leaf (and skip the summary entries - which have negative
+ DIVE_INDEX) */
+static void first_leaf(GtkTreeModel *model, GtkTreeIter *iter, int *diveidx)
+{
+ GtkTreeIter parent;
+ GtkTreePath *tpath;
+
+ while (*diveidx < 0) {
+ memcpy(&parent, iter, sizeof(parent));
+ tpath = gtk_tree_model_get_path(model, &parent);
+ if (!gtk_tree_model_iter_children(model, iter, &parent))
+ /* we should never have a parent without child */
+ return;
+ if(!gtk_tree_view_row_expanded(GTK_TREE_VIEW(dive_list.tree_view), tpath))
+ gtk_tree_view_expand_row(GTK_TREE_VIEW(dive_list.tree_view), tpath, FALSE);
+ gtk_tree_model_get(GTK_TREE_MODEL(model), iter, DIVE_INDEX, diveidx, -1);
+ }
+}
+
+/* make sure that if we expand a summary row that is selected, the children show
+ up as selected, too */
+void row_expanded_cb(GtkTreeView *tree_view, GtkTreeIter *iter, GtkTreePath *path, gpointer data)
+{
+ GtkTreeIter child;
+ GtkTreeModel *model = GTK_TREE_MODEL(dive_list.model);
+ GtkTreeSelection *selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dive_list.tree_view));
+
+ if (!gtk_tree_model_iter_children(model, &child, iter))
+ return;
+
+ do {
+ int idx;
+ struct dive *dive;
+
+ gtk_tree_model_get(model, &child, DIVE_INDEX, &idx, -1);
+ dive = get_dive(idx);
+
+ if (dive->selected)
+ gtk_tree_selection_select_iter(selection, &child);
+ else
+ gtk_tree_selection_unselect_iter(selection, &child);
+ } while (gtk_tree_model_iter_next(model, &child));
+}
+
+static int selected_children(GtkTreeModel *model, GtkTreeIter *iter)
+{
+ GtkTreeIter child;
+
+ if (!gtk_tree_model_iter_children(model, &child, iter))
+ return FALSE;
+
+ do {
+ int idx;
+ struct dive *dive;
+
+ gtk_tree_model_get(model, &child, DIVE_INDEX, &idx, -1);
+ dive = get_dive(idx);
+
+ if (dive->selected)
+ return TRUE;
+ } while (gtk_tree_model_iter_next(model, &child));
+ return FALSE;
+}
+
+/* Make sure that if we collapse a summary row with any selected children, the row
+ shows up as selected too */
+void row_collapsed_cb(GtkTreeView *tree_view, GtkTreeIter *iter, GtkTreePath *path, gpointer data)
+{
+ GtkTreeModel *model = GTK_TREE_MODEL(dive_list.model);
+ GtkTreeSelection *selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dive_list.tree_view));
+
+ if (selected_children(model, iter))
+ gtk_tree_selection_select_iter(selection, iter);
+}
+
+static GList *selection_changed = NULL;
+
+/*
+ * This is called _before_ the selection is changed, for every single entry;
+ *
+ * We simply create a list of all changed entries, and make sure that the
+ * group entries go at the end of the list.
+ */
+gboolean modify_selection_cb(GtkTreeSelection *selection, GtkTreeModel *model,
+ GtkTreePath *path, gboolean was_selected, gpointer userdata)
+{
+ GtkTreeIter iter, *p;
+
+ if (!gtk_tree_model_get_iter(model, &iter, path))
+ return TRUE;
+
+ /* Add the group entries to the end */
+ p = gtk_tree_iter_copy(&iter);
+ if (gtk_tree_model_iter_has_child(model, p))
+ selection_changed = g_list_append(selection_changed, p);
+ else
+ selection_changed = g_list_prepend(selection_changed, p);
+ return TRUE;
+}
+
+static void select_dive(struct dive *dive, int selected)
+{
+ if (dive->selected != selected) {
+ amount_selected += selected ? 1 : -1;
+ dive->selected = selected;
+ }
+}
+
+/*
+ * This gets called when a dive group has changed selection.
+ */
+static void select_dive_group(GtkTreeModel *model, GtkTreeSelection *selection, GtkTreeIter *iter, int selected)
+{
+ int first = 1;
+ GtkTreeIter child;
+
+ if (selected == selected_children(model, iter))
+ return;
+
+ if (!gtk_tree_model_iter_children(model, &child, iter))
+ return;
+
+ do {
+ int idx;
+ struct dive *dive;
+
+ gtk_tree_model_get(model, &child, DIVE_INDEX, &idx, -1);
+ if (first && selected)
+ selected_dive = idx;
+ first = 0;
+ dive = get_dive(idx);
+ if (dive->selected == selected)
+ continue;
+
+ select_dive(dive, selected);
+ if (selected)
+ gtk_tree_selection_select_iter(selection, &child);
+ else
+ gtk_tree_selection_unselect_iter(selection, &child);
+ } while (gtk_tree_model_iter_next(model, &child));
+}
+
+/*
+ * This gets called _after_ the selections have changed, for each entry that
+ * may have changed. Check if the gtk selection state matches our internal
+ * selection state to verify.
+ *
+ * The group entries are at the end, this guarantees that we have handled
+ * all the dives before we handle groups.
+ */
+static void check_selection_cb(GtkTreeIter *iter, GtkTreeSelection *selection)
+{
+ GtkTreeModel *model = GTK_TREE_MODEL(dive_list.model);
+ struct dive *dive;
+ int idx, gtk_selected;
+
+ gtk_tree_model_get(model, iter,
+ DIVE_INDEX, &idx,
+ -1);
+ dive = get_dive(idx);
+ gtk_selected = gtk_tree_selection_iter_is_selected(selection, iter);
+ if (idx < 0)
+ select_dive_group(model, selection, iter, gtk_selected);
+ else {
+ select_dive(dive, gtk_selected);
+ if (gtk_selected)
+ selected_dive = idx;
+ }
+ gtk_tree_iter_free(iter);
+}
+
+/* this is called when gtk thinks that the selection has changed */
+static void selection_cb(GtkTreeSelection *selection, GtkTreeModel *model)
+{
+ GList *changed = selection_changed;
+
+ selection_changed = NULL;
+ g_list_foreach(changed, (GFunc) check_selection_cb, selection);
+ g_list_free(changed);
+#if DEBUG_SELECTION_TRACKING
+ dump_selection();
+#endif
+
+ process_selected_dives();
+ repaint_dive();
+}
+
+const char *star_strings[] = {
+ ZERO_STARS,
+ ONE_STARS,
+ TWO_STARS,
+ THREE_STARS,
+ FOUR_STARS,
+ FIVE_STARS
+};
+
+static void star_data_func(GtkTreeViewColumn *col,
+ GtkCellRenderer *renderer,
+ GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ int nr_stars, idx;
+ char buffer[40];
+
+ gtk_tree_model_get(model, iter, DIVE_INDEX, &idx, DIVE_RATING, &nr_stars, -1);
+ if (idx < 0) {
+ *buffer = '\0';
+ } else {
+ if (nr_stars < 0 || nr_stars > 5)
+ nr_stars = 0;
+ snprintf(buffer, sizeof(buffer), "%s", star_strings[nr_stars]);
+ }
+ g_object_set(renderer, "text", buffer, NULL);
+}
+
+static void date_data_func(GtkTreeViewColumn *col,
+ GtkCellRenderer *renderer,
+ GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ int val, idx, nr;
+ struct tm *tm;
+ time_t when;
+ char buffer[40];
+
+ gtk_tree_model_get(model, iter, DIVE_INDEX, &idx, DIVE_DATE, &val, DIVE_NR, &nr, -1);
+
+ /* 2038 problem */
+ when = val;
+
+ tm = gmtime(&when);
+ switch(idx) {
+ case -NEW_TRIP:
+ snprintf(buffer, sizeof(buffer),
+ "Trip %s, %s %d, %d (%d dive%s)",
+ weekday(tm->tm_wday),
+ monthname(tm->tm_mon),
+ tm->tm_mday, tm->tm_year + 1900,
+ nr, nr > 1 ? "s" : "");
+ break;
+ default:
+ snprintf(buffer, sizeof(buffer),
+ "%s, %s %d, %d %02d:%02d",
+ weekday(tm->tm_wday),
+ monthname(tm->tm_mon),
+ tm->tm_mday, tm->tm_year + 1900,
+ tm->tm_hour, tm->tm_min);
+ }
+ g_object_set(renderer, "text", buffer, NULL);
+}
+
+static void depth_data_func(GtkTreeViewColumn *col,
+ GtkCellRenderer *renderer,
+ GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ int depth, integer, frac, len, idx;
+ char buffer[40];
+
+ gtk_tree_model_get(model, iter, DIVE_INDEX, &idx, DIVE_DEPTH, &depth, -1);
+
+ if (idx < 0) {
+ *buffer = '\0';
+ } else {
+ switch (output_units.length) {
+ case METERS:
+ /* To tenths of meters */
+ depth = (depth + 49) / 100;
+ integer = depth / 10;
+ frac = depth % 10;
+ if (integer < 20)
+ break;
+ if (frac >= 5)
+ integer++;
+ frac = -1;
+ break;
+ case FEET:
+ integer = mm_to_feet(depth) + 0.5;
+ frac = -1;
+ break;
+ default:
+ return;
+ }
+ len = snprintf(buffer, sizeof(buffer), "%d", integer);
+ if (frac >= 0)
+ len += snprintf(buffer+len, sizeof(buffer)-len, ".%d", frac);
+ }
+ g_object_set(renderer, "text", buffer, NULL);
+}
+
+static void duration_data_func(GtkTreeViewColumn *col,
+ GtkCellRenderer *renderer,
+ GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ unsigned int sec;
+ int idx;
+ char buffer[16];
+
+ gtk_tree_model_get(model, iter, DIVE_INDEX, &idx, DIVE_DURATION, &sec, -1);
+ if (idx < 0)
+ *buffer = '\0';
+ else
+ snprintf(buffer, sizeof(buffer), "%d:%02d", sec / 60, sec % 60);
+
+ g_object_set(renderer, "text", buffer, NULL);
+}
+
+static void temperature_data_func(GtkTreeViewColumn *col,
+ GtkCellRenderer *renderer,
+ GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ int value, idx;
+ char buffer[80];
+
+ gtk_tree_model_get(model, iter, DIVE_INDEX, &idx, DIVE_TEMPERATURE, &value, -1);
+
+ *buffer = 0;
+ if (idx >= 0 && value) {
+ double deg;
+ switch (output_units.temperature) {
+ case CELSIUS:
+ deg = mkelvin_to_C(value);
+ break;
+ case FAHRENHEIT:
+ deg = mkelvin_to_F(value);
+ break;
+ default:
+ return;
+ }
+ snprintf(buffer, sizeof(buffer), "%.1f", deg);
+ }
+
+ g_object_set(renderer, "text", buffer, NULL);
+}
+
+static void nr_data_func(GtkTreeViewColumn *col,
+ GtkCellRenderer *renderer,
+ GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ int idx, nr;
+ char buffer[40];
+
+ gtk_tree_model_get(model, iter, DIVE_INDEX, &idx, DIVE_NR, &nr, -1);
+ if (idx < 0)
+ *buffer = '\0';
+ else
+ snprintf(buffer, sizeof(buffer), "%d", nr);
+ g_object_set(renderer, "text", buffer, NULL);
+}
+
+/*
+ * Get "maximal" dive gas for a dive.
+ * Rules:
+ * - Trimix trumps nitrox (highest He wins, O2 breaks ties)
+ * - Nitrox trumps air (even if hypoxic)
+ * These are the same rules as the inter-dive sorting rules.
+ */
+static void get_dive_gas(struct dive *dive, int *o2_p, int *he_p, int *o2low_p)
+{
+ int i;
+ int maxo2 = -1, maxhe = -1, mino2 = 1000;
+
+ for (i = 0; i < MAX_CYLINDERS; i++) {
+ cylinder_t *cyl = dive->cylinder + i;
+ struct gasmix *mix = &cyl->gasmix;
+ int o2 = mix->o2.permille;
+ int he = mix->he.permille;
+
+ if (cylinder_none(cyl))
+ continue;
+ if (!o2)
+ o2 = AIR_PERMILLE;
+ if (o2 < mino2)
+ mino2 = o2;
+ if (he > maxhe)
+ goto newmax;
+ if (he < maxhe)
+ continue;
+ if (o2 <= maxo2)
+ continue;
+newmax:
+ maxhe = he;
+ maxo2 = o2;
+ }
+ /* All air? Show/sort as "air"/zero */
+ if (!maxhe && maxo2 == AIR_PERMILLE && mino2 == maxo2)
+ maxo2 = mino2 = 0;
+ *o2_p = maxo2;
+ *he_p = maxhe;
+ *o2low_p = mino2;
+}
+
+static int total_weight(struct dive *dive)
+{
+ int i, total_grams = 0;
+
+ if (dive)
+ for (i=0; i< MAX_WEIGHTSYSTEMS; i++)
+ total_grams += dive->weightsystem[i].weight.grams;
+ return total_grams;
+}
+
+static void weight_data_func(GtkTreeViewColumn *col,
+ GtkCellRenderer *renderer,
+ GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ int indx, decimals;
+ double value;
+ char buffer[80];
+ struct dive *dive;
+
+ gtk_tree_model_get(model, iter, DIVE_INDEX, &indx, -1);
+ dive = get_dive(indx);
+ value = get_weight_units(total_weight(dive), &decimals, NULL);
+ if (value == 0.0)
+ *buffer = '\0';
+ else
+ snprintf(buffer, sizeof(buffer), "%.*f", decimals, value);
+
+ g_object_set(renderer, "text", buffer, NULL);
+}
+
+static gint nitrox_sort_func(GtkTreeModel *model,
+ GtkTreeIter *iter_a,
+ GtkTreeIter *iter_b,
+ gpointer user_data)
+{
+ int index_a, index_b;
+ struct dive *a, *b;
+ int a_o2, b_o2;
+ int a_he, b_he;
+ int a_o2low, b_o2low;
+
+ gtk_tree_model_get(model, iter_a, DIVE_INDEX, &index_a, -1);
+ gtk_tree_model_get(model, iter_b, DIVE_INDEX, &index_b, -1);
+ a = get_dive(index_a);
+ b = get_dive(index_b);
+ get_dive_gas(a, &a_o2, &a_he, &a_o2low);
+ get_dive_gas(b, &b_o2, &b_he, &b_o2low);
+
+ /* Sort by Helium first, O2 second */
+ if (a_he == b_he) {
+ if (a_o2 == b_o2)
+ return a_o2low - b_o2low;
+ return a_o2 - b_o2;
+ }
+ return a_he - b_he;
+}
+
+#define UTF8_ELLIPSIS "\xE2\x80\xA6"
+
+static void nitrox_data_func(GtkTreeViewColumn *col,
+ GtkCellRenderer *renderer,
+ GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ int idx, o2, he, o2low;
+ char buffer[80];
+ struct dive *dive;
+
+ gtk_tree_model_get(model, iter, DIVE_INDEX, &idx, -1);
+ if (idx < 0) {
+ *buffer = '\0';
+ goto exit;
+ }
+ dive = get_dive(idx);
+ get_dive_gas(dive, &o2, &he, &o2low);
+ o2 = (o2 + 5) / 10;
+ he = (he + 5) / 10;
+ o2low = (o2low + 5) / 10;
+
+ if (he)
+ snprintf(buffer, sizeof(buffer), "%d/%d", o2, he);
+ else if (o2)
+ if (o2 == o2low)
+ snprintf(buffer, sizeof(buffer), "%d", o2);
+ else
+ snprintf(buffer, sizeof(buffer), "%d" UTF8_ELLIPSIS "%d", o2low, o2);
+ else
+ strcpy(buffer, "air");
+exit:
+ g_object_set(renderer, "text", buffer, NULL);
+}
+
+/* Render the SAC data (integer value of "ml / min") */
+static void sac_data_func(GtkTreeViewColumn *col,
+ GtkCellRenderer *renderer,
+ GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ int value, idx;
+ const char *fmt;
+ char buffer[16];
+ double sac;
+
+ gtk_tree_model_get(model, iter, DIVE_INDEX, &idx, DIVE_SAC, &value, -1);
+
+ if (idx < 0 || !value) {
+ *buffer = '\0';
+ goto exit;
+ }
+
+ sac = value / 1000.0;
+ switch (output_units.volume) {
+ case LITER:
+ fmt = "%4.1f";
+ break;
+ case CUFT:
+ fmt = "%4.2f";
+ sac = ml_to_cuft(sac * 1000);
+ break;
+ }
+ snprintf(buffer, sizeof(buffer), fmt, sac);
+exit:
+ g_object_set(renderer, "text", buffer, NULL);
+}
+
+/* Render the OTU data (integer value of "OTU") */
+static void otu_data_func(GtkTreeViewColumn *col,
+ GtkCellRenderer *renderer,
+ GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ int value, idx;
+ char buffer[16];
+
+ gtk_tree_model_get(model, iter, DIVE_INDEX, &idx, DIVE_OTU, &value, -1);
+
+ if (idx < 0 || !value)
+ *buffer = '\0';
+ else
+ snprintf(buffer, sizeof(buffer), "%d", value);
+
+ g_object_set(renderer, "text", buffer, NULL);
+}
+
+/* calculate OTU for a dive */
+static int calculate_otu(struct dive *dive)
+{
+ int i;
+ double otu = 0.0;
+
+ for (i = 1; i < dive->samples; i++) {
+ int t;
+ double po2;
+ struct sample *sample = dive->sample + i;
+ struct sample *psample = sample - 1;
+ t = sample->time.seconds - psample->time.seconds;
+ int o2 = dive->cylinder[sample->cylinderindex].gasmix.o2.permille;
+ if (!o2)
+ o2 = AIR_PERMILLE;
+ po2 = o2 / 1000.0 * (sample->depth.mm + 10000) / 10000.0;
+ if (po2 >= 0.5)
+ otu += pow(po2 - 0.5, 0.83) * t / 30.0;
+ }
+ return otu + 0.5;
+}
+/*
+ * Return air usage (in liters).
+ */
+static double calculate_airuse(struct dive *dive)
+{
+ double airuse = 0;
+ int i;
+
+ for (i = 0; i < MAX_CYLINDERS; i++) {
+ pressure_t start, end;
+ cylinder_t *cyl = dive->cylinder + i;
+ int size = cyl->type.size.mliter;
+ double kilo_atm;
+
+ if (!size)
+ continue;