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#include <gtk/gtk.h>
enum
{
PROP_LABEL = 1,
PROP_ID,
LAST_PROPERTY
};
static GParamSpec *properties[LAST_PROPERTY] = { NULL, };
typedef struct
{
GObject parent;
char *label;
int id;
} MyObject;
typedef struct
{
GObjectClass parent_class;
} MyObjectClass;
static GType my_object_get_type (void);
G_DEFINE_TYPE (MyObject, my_object, G_TYPE_OBJECT)
static void
my_object_init (MyObject *obj)
{
}
static void
my_object_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
MyObject *obj = (MyObject *)object;
switch (property_id)
{
case PROP_LABEL:
g_value_set_string (value, obj->label);
break;
case PROP_ID:
g_value_set_int (value, obj->id);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
my_object_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
MyObject *obj = (MyObject *)object;
switch (property_id)
{
case PROP_LABEL:
g_free (obj->label);
obj->label = g_value_dup_string (value);
break;
case PROP_ID:
obj->id = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
my_object_finalize (GObject *obj)
{
MyObject *object = (MyObject *)obj;
g_free (object->label);
G_OBJECT_CLASS (my_object_parent_class)->finalize (obj);
}
static void
my_object_class_init (MyObjectClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->get_property = my_object_get_property;
object_class->set_property = my_object_set_property;
object_class->finalize = my_object_finalize;
properties[PROP_LABEL] = g_param_spec_string ("label", "label", "label",
NULL, G_PARAM_READWRITE);
properties[PROP_ID] = g_param_spec_int ("id", "id", "id",
0, G_MAXINT, 0, G_PARAM_READWRITE);
g_object_class_install_properties (object_class, LAST_PROPERTY, properties);
}
static GtkWidget *
create_widget (gpointer item,
gpointer user_data)
{
MyObject *obj = (MyObject *)item;
GtkWidget *label;
label = gtk_label_new ("");
g_object_bind_property (obj, "label", label, "label", G_BINDING_SYNC_CREATE);
return label;
}
static int
compare_items (gconstpointer a, gconstpointer b, gpointer data)
{
int id_a, id_b;
g_object_get ((gpointer)a, "id", &id_a, NULL);
g_object_get ((gpointer)b, "id", &id_b, NULL);
return id_a - id_b;
}
static void
add_some (GtkButton *button, GListStore *store)
{
int n, i;
guint n_items;
GObject *obj;
char *label;
for (n = 0; n < 50; n++)
{
n_items = g_list_model_get_n_items (G_LIST_MODEL (store));
i = g_random_int_range (0, MAX (2 * n_items, 1));
label = g_strdup_printf ("Added %d", i);
obj = g_object_new (my_object_get_type (),
"id", i,
"label", label,
NULL);
g_list_store_insert_sorted (store, obj, compare_items, NULL);
g_object_unref (obj);
g_free (label);
}
}
static void
remove_some (GtkButton *button, GListStore *store)
{
int n, i;
guint n_items;
for (n = 0; n < 50; n++)
{
n_items = g_list_model_get_n_items (G_LIST_MODEL (store));
if (n_items == 0)
return;
i = g_random_int_range (0, n_items);
g_list_store_remove (store, i);
}
}
int
main (int argc, char *argv[])
{
GtkWidget *window, *grid, *sw, *box, *button;
GListStore *store;
int i;
gtk_init ();
store = g_list_store_new (my_object_get_type ());
for (i = 0; i < 100; i++)
{
MyObject *obj;
char *label;
label = g_strdup_printf ("item %d", i);
obj = g_object_new (my_object_get_type (),
"id", i,
"label", label,
NULL);
g_list_store_append (store, obj);
g_free (label);
g_object_unref (obj);
}
window = gtk_window_new ();
grid = gtk_grid_new ();
gtk_window_set_child (GTK_WINDOW (window), grid);
sw = gtk_scrolled_window_new ();
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_widget_set_hexpand (sw, TRUE);
gtk_widget_set_vexpand (sw, TRUE);
gtk_grid_attach (GTK_GRID (grid), sw, 0, 0, 1, 1);
box = gtk_list_box_new ();
gtk_list_box_bind_model (GTK_LIST_BOX (box), G_LIST_MODEL (store), create_widget, NULL, NULL);
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), box);
sw = gtk_scrolled_window_new ();
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_widget_set_hexpand (sw, TRUE);
gtk_widget_set_vexpand (sw, TRUE);
gtk_grid_attach (GTK_GRID (grid), sw, 1, 0, 1, 1);
box = gtk_flow_box_new ();
gtk_flow_box_bind_model (GTK_FLOW_BOX (box), G_LIST_MODEL (store), create_widget, NULL, NULL);
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), box);
button = gtk_button_new_with_label ("Add some");
g_signal_connect (button, "clicked", G_CALLBACK (add_some), store);
gtk_grid_attach (GTK_GRID (grid), button, 0, 1, 1, 1);
button = gtk_button_new_with_label ("Remove some");
g_signal_connect (button, "clicked", G_CALLBACK (remove_some), store);
gtk_grid_attach (GTK_GRID (grid), button, 0, 2, 1, 1);
gtk_widget_show (window);
while (TRUE)
g_main_context_iteration (NULL, TRUE);
return 0;
}
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