void
math_converter_set_conversion(MathConverter *converter, /*const gchar *category,*/ const gchar *unit_a, const gchar *unit_b)
{
Unit *ua;
Unit *ub;
g_return_if_fail (converter != NULL);
g_return_if_fail (unit_a != NULL);
g_return_if_fail (unit_b != NULL);
ua = unit_manager_get_unit_by_name(unit_manager_get_default(), unit_a);
ub = unit_manager_get_unit_by_name(unit_manager_get_default(), unit_b);
if (!ua || !ub)
{
GtkTreeModel *model;
GtkTreeIter iter;
/* Select the first unit */
model = gtk_combo_box_get_model(GTK_COMBO_BOX(converter->priv->from_combo));
if (gtk_tree_model_get_iter_first(model, &iter)) {
GtkTreeIter child_iter;
while (gtk_tree_model_iter_children(model, &child_iter, &iter))
iter = child_iter;
gtk_combo_box_set_active_iter(GTK_COMBO_BOX(converter->priv->from_combo), &iter);
}
return;
}
set_active_unit(GTK_COMBO_BOX(converter->priv->from_combo), NULL, ua);
set_active_unit(GTK_COMBO_BOX(converter->priv->to_combo), NULL, ub);
}
static void
update_from_model(MathConverter *converter)
{
GtkTreeStore *from_model;
from_model = gtk_tree_store_new(3, G_TYPE_STRING, G_TYPE_OBJECT, G_TYPE_OBJECT);
if (converter->priv->category == NULL) {
const GList *categories, *iter;
categories = unit_manager_get_categories(unit_manager_get_default());
for (iter = categories; iter; iter = iter->next) {
UnitCategory *category = iter->data;
GtkTreeIter parent;
const GList *unit_iter;
gtk_tree_store_append(from_model, &parent, NULL);
gtk_tree_store_set(from_model, &parent, 0, unit_category_get_display_name(category), 1, category, -1);
for (unit_iter = unit_category_get_units(category); unit_iter; unit_iter = unit_iter->next) {
Unit *unit = unit_iter->data;
GtkTreeIter iter;
gtk_tree_store_append(from_model, &iter, &parent);
gtk_tree_store_set(from_model, &iter, 0, unit_get_display_name(unit), 1, category, 2, unit, -1);
}
}
}
else {
UnitCategory *category;
const GList *unit_iter;
category = unit_manager_get_category(unit_manager_get_default(), converter->priv->category);
for (unit_iter = unit_category_get_units(category); unit_iter; unit_iter = unit_iter->next) {
Unit *unit = unit_iter->data;
GtkTreeIter iter;
gtk_tree_store_append(from_model, &iter, NULL);
gtk_tree_store_set(from_model, &iter, 0, unit_get_display_name(unit), 1, category, 2, unit, -1);
}
}
gtk_combo_box_set_model(GTK_COMBO_BOX(converter->priv->from_combo), GTK_TREE_MODEL(from_model));
}
static int
do_convert(const MPNumber *x, const char *x_units, const char *z_units, MPNumber *z, void *data)
{
return unit_manager_convert_by_symbol(unit_manager_get_default(), x, x_units, z_units, z);
}
