I wanted to try out a sorter in GTKColumnView. What I managed to do was to get the sorting arrows to appear in the title bar. I tried clicking all over the title bar, but the compareFunc is not called. I used g_print as a test.
What is missing in my code that this doesn’t work?
// gcc -o main main.c `pkg-config --cflags --libs gtk4`
#include <gtk/gtk.h>
static GListModel* create_model() {
GListStore* store = g_list_store_new(G_TYPE_OBJECT);
for (int i = 1; i < 8; i++) {
GObject* obj = g_object_new(G_TYPE_OBJECT, NULL);
gint * value = g_new(gint, 1);
*value = i;
g_object_set_data_full(obj, "item-object", value, g_free);
g_list_store_append(store, obj);
g_object_unref(obj);
}
return G_LIST_MODEL(store);
}
static gint compareFunc(gconstpointer a, gconstpointer b, gpointer data)
{
g_print("compare func\n");
return 0; // From Test
}
static void setup_cb(GtkSignalListItemFactory* factory, GtkListItem* list_item, gpointer user_data) {
GtkWidget* label = gtk_label_new(NULL);
gtk_list_item_set_child(list_item, label);
}
static void bind_number_cb(GtkSignalListItemFactory* factory, GtkListItem* list_item, gpointer user_data) {
GtkWidget* label = gtk_list_item_get_child(list_item);
GObject* item = gtk_list_item_get_item(list_item);
gint *value = g_object_get_data(item, "item-object");
char buffer[32];
snprintf(buffer, sizeof(buffer), "%d", *value);
gtk_label_set_text(GTK_LABEL(label), buffer);
}
static void activate(GtkApplication* app, gpointer user_data) {
GtkWidget* window = gtk_application_window_new(app);
gtk_window_set_title(GTK_WINDOW(window), "Sort Test");
gtk_window_set_default_size(GTK_WINDOW(window), 400, 300);
GtkWidget* scrolled_window = gtk_scrolled_window_new();
gtk_window_set_child(GTK_WINDOW(window), scrolled_window);
GListModel* model = create_model();
GtkSelectionModel* selection_model = GTK_SELECTION_MODEL(gtk_no_selection_new(model));
GtkWidget* column_view = gtk_column_view_new(selection_model);
gtk_scrolled_window_set_child(GTK_SCROLLED_WINDOW(scrolled_window), column_view);
GtkListItemFactory* number_factory = gtk_signal_list_item_factory_new();
g_signal_connect(number_factory, "setup", G_CALLBACK(setup_cb), NULL);
g_signal_connect(number_factory, "bind", G_CALLBACK(bind_number_cb), NULL);
GtkColumnViewColumn* column = gtk_column_view_column_new("Numbers", number_factory);
gtk_column_view_append_column(GTK_COLUMN_VIEW(column_view), column);
GtkSorter *sorter = GTK_SORTER(gtk_custom_sorter_new(compareFunc, NULL, NULL));
gtk_column_view_column_set_sorter(column, sorter);
g_object_unref(sorter);
gtk_window_present(GTK_WINDOW(window));
}
int main(int argc, char** argv) {
GtkApplication* app = gtk_application_new("org.gtk.example", G_APPLICATION_DEFAULT_FLAGS);
g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
int status = g_application_run(G_APPLICATION(app), argc, argv);
g_object_unref(app);
return status;
}