--- /dev/null
+/* Combo boxes
+ *
+ * The ComboBox widget allows to select one option out of a list.
+ * The ComboBoxEntry additionally allows the user to enter a value
+ * that is not in the list of options.
+ *
+ * How the options are displayed is controlled by cell renderers.
+ */
+
+#include <gtk/gtk.h>
+
+enum
+{
+ PIXBUF_COL,
+ TEXT_COL
+};
+
+static gchar *
+strip_underscore (const gchar *text)
+{
+ gchar *p, *q;
+ gchar *result;
+
+ result = g_strdup (text);
+ p = q = result;
+ while (*p)
+ {
+ if (*p != '_')
+ {
+ *q = *p;
+ q++;
+ }
+ p++;
+ }
+ *q = '\0';
+
+ return result;
+}
+
+static GtkTreeModel *
+create_stock_icon_store (void)
+{
+ gchar *stock_id[6] = {
+ GTK_STOCK_DIALOG_WARNING,
+ GTK_STOCK_STOP,
+ GTK_STOCK_NEW,
+ GTK_STOCK_CLEAR,
+ NULL,
+ GTK_STOCK_OPEN
+ };
+
+ GtkStockItem item;
+ GdkPixbuf *pixbuf;
+ GtkWidget *cellview;
+ GtkTreeIter iter;
+ GtkListStore *store;
+ gchar *label;
+ gint i;
+
+ cellview = gtk_cell_view_new ();
+
+ store = gtk_list_store_new (2, GDK_TYPE_PIXBUF, G_TYPE_STRING);
+
+ for (i = 0; i < G_N_ELEMENTS (stock_id); i++)
+ {
+ if (stock_id[i])
+ {
+ pixbuf = gtk_widget_render_icon (cellview, stock_id[i],
+ GTK_ICON_SIZE_BUTTON, NULL);
+ gtk_stock_lookup (stock_id[i], &item);
+ label = strip_underscore (item.label);
+ gtk_list_store_append (store, &iter);
+ gtk_list_store_set (store, &iter,
+ PIXBUF_COL, pixbuf,
+ TEXT_COL, label,
+ -1);
+ g_free (label);
+ }
+ else
+ {
+ gtk_list_store_append (store, &iter);
+ gtk_list_store_set (store, &iter,
+ PIXBUF_COL, NULL,
+ TEXT_COL, "separator",
+ -1);
+ }
+ }
+
+ gtk_widget_destroy (cellview);
+
+ return GTK_TREE_MODEL (store);
+}
+
+/* A GtkCellLayoutDataFunc that demonstrates how one can control
+ * sensitivity of rows. This particular function does nothing
+ * useful and just makes the second row insensitive.
+ */
+static void
+set_sensitive (GtkCellLayout *cell_layout,
+ GtkCellRenderer *cell,
+ GtkTreeModel *tree_model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ GtkTreePath *path;
+ gint *indices;
+ gboolean sensitive;
+
+ path = gtk_tree_model_get_path (tree_model, iter);
+ indices = gtk_tree_path_get_indices (path);
+ sensitive = indices[0] != 1;
+ gtk_tree_path_free (path);
+
+ g_object_set (cell, "sensitive", sensitive, NULL);
+}
+
+/* A GtkTreeViewRowSeparatorFunc that demonstrates how rows can be
+ * rendered as separators. This particular function does nothing
+ * useful and just turns the fourth row into a separator.
+ */
+static gboolean
+is_separator (GtkTreeModel *model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ GtkTreePath *path;
+ gboolean result;
+
+ path = gtk_tree_model_get_path (model, iter);
+ result = gtk_tree_path_get_indices (path)[0] == 4;
+ gtk_tree_path_free (path);
+
+ return result;
+}
+
+static GtkTreeModel *
+create_capital_store (void)
+{
+ struct {
+ gchar *group;
+ gchar *capital;
+ } capitals[] = {
+ { "A - B", NULL },
+ { NULL, "Albany" },
+ { NULL, "Annapolis" },
+ { NULL, "Atlanta" },
+ { NULL, "Augusta" },
+ { NULL, "Austin" },
+ { NULL, "Baton Rouge" },
+ { NULL, "Bismarck" },
+ { NULL, "Boise" },
+ { NULL, "Boston" },
+ { "C - D", NULL },
+ { NULL, "Carson City" },
+ { NULL, "Charleston" },
+ { NULL, "Cheyenne" },
+ { NULL, "Columbia" },
+ { NULL, "Columbus" },
+ { NULL, "Concord" },
+ { NULL, "Denver" },
+ { NULL, "Des Moines" },
+ { NULL, "Dover" },
+ { "E - J", NULL },
+ { NULL, "Frankfort" },
+ { NULL, "Harrisburg" },
+ { NULL, "Hartford" },
+ { NULL, "Helena" },
+ { NULL, "Honolulu" },
+ { NULL, "Indianapolis" },
+ { NULL, "Jackson" },
+ { NULL, "Jefferson City" },
+ { NULL, "Juneau" },
+ { "K - O" },
+ { NULL, "Lansing" },
+ { NULL, "Lincoln" },
+ { NULL, "Little Rock" },
+ { NULL, "Madison" },
+ { NULL, "Montgomery" },
+ { NULL, "Montpelier" },
+ { NULL, "Nashville" },
+ { NULL, "Oklahoma City" },
+ { NULL, "Olympia" },
+ { NULL, "P - S" },
+ { NULL, "Phoenix" },
+ { NULL, "Pierre" },
+ { NULL, "Providence" },
+ { NULL, "Raleigh" },
+ { NULL, "Richmond" },
+ { NULL, "Sacramento" },
+ { NULL, "Salem" },
+ { NULL, "Salt Lake City" },
+ { NULL, "Santa Fe" },
+ { NULL, "Springfield" },
+ { NULL, "St. Paul" },
+ { "T - Z", NULL },
+ { NULL, "Tallahassee" },
+ { NULL, "Topeka" },
+ { NULL, "Trenton" },
+ { NULL, NULL }
+ };
+
+ GtkTreeIter iter, iter2;
+ GtkTreeStore *store;
+ gint i;
+
+ store = gtk_tree_store_new (1, G_TYPE_STRING);
+
+ for (i = 0; capitals[i].group || capitals[i].capital; i++)
+ {
+ if (capitals[i].group)
+ {
+ gtk_tree_store_append (store, &iter, NULL);
+ gtk_tree_store_set (store, &iter, 0, capitals[i].group, -1);
+ }
+ else if (capitals[i].capital)
+ {
+ gtk_tree_store_append (store, &iter2, &iter);
+ gtk_tree_store_set (store, &iter2, 0, capitals[i].capital, -1);
+ }
+ }
+
+ return GTK_TREE_MODEL (store);
+}
+
+static void
+is_capital_sensitive (GtkCellLayout *cell_layout,
+ GtkCellRenderer *cell,
+ GtkTreeModel *tree_model,
+ GtkTreeIter *iter,
+ gpointer data)
+{
+ gboolean sensitive;
+
+ sensitive = !gtk_tree_model_iter_has_child (tree_model, iter);
+
+ g_object_set (cell, "sensitive", sensitive, NULL);
+}
+
+static void
+fill_combo_entry (GtkWidget *entry)
+{
+ gtk_combo_box_append_text (GTK_COMBO_BOX (entry), "One");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (entry), "Two");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (entry), "2\302\275");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (entry), "Three");
+}
+
+GtkWidget *
+do_combobox (GtkWidget *do_widget)
+{
+ static GtkWidget *window = NULL;
+ GtkWidget *vbox, *frame, *box, *combo;
+ GtkTreeModel *model;
+ GtkCellRenderer *renderer;
+ GtkTreePath *path;
+ GtkTreeIter iter;
+
+ if (!window)
+ {
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ gtk_window_set_screen (GTK_WINDOW (window),
+ gtk_widget_get_screen (do_widget));
+ gtk_window_set_title (GTK_WINDOW (window), "Combo boxes");
+
+ g_signal_connect (window, "destroy",
+ G_CALLBACK (gtk_widget_destroyed),
+ &window);
+
+ gtk_container_set_border_width (GTK_CONTAINER (window), 10);
+
+ vbox = gtk_vbox_new (FALSE, 2);
+ gtk_container_add (GTK_CONTAINER (window), vbox);
+
+ /* A combobox demonstrating cell renderers, separators and
+ * insensitive rows
+ */
+ frame = gtk_frame_new ("Some stock icons");
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+
+ box = gtk_vbox_new (FALSE, 0);
+ gtk_container_set_border_width (GTK_CONTAINER (box), 5);
+ gtk_container_add (GTK_CONTAINER (frame), box);
+
+ model = create_stock_icon_store ();
+ combo = gtk_combo_box_new_with_model (model);
+ g_object_unref (model);
+ gtk_container_add (GTK_CONTAINER (box), combo);
+
+ renderer = gtk_cell_renderer_pixbuf_new ();
+ gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, FALSE);
+ gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), renderer,
+ "pixbuf", PIXBUF_COL,
+ NULL);
+
+ gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo),
+ renderer,
+ set_sensitive,
+ NULL, NULL);
+
+ renderer = gtk_cell_renderer_text_new ();
+ gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, TRUE);
+ gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), renderer,
+ "text", TEXT_COL,
+ NULL);
+
+ gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo),
+ renderer,
+ set_sensitive,
+ NULL, NULL);
+
+ gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (combo),
+ is_separator, NULL, NULL);
+
+ gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 0);
+
+ /* A combobox demonstrating trees.
+ */
+ frame = gtk_frame_new ("Where are we ?");
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+
+ box = gtk_vbox_new (FALSE, 0);
+ gtk_container_set_border_width (GTK_CONTAINER (box), 5);
+ gtk_container_add (GTK_CONTAINER (frame), box);
+
+ model = create_capital_store ();
+ combo = gtk_combo_box_new_with_model (model);
+ g_object_unref (model);
+ gtk_container_add (GTK_CONTAINER (box), combo);
+
+ renderer = gtk_cell_renderer_text_new ();
+ gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, TRUE);
+ gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), renderer,
+ "text", 0,
+ NULL);
+ gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo),
+ renderer,
+ is_capital_sensitive,
+ NULL, NULL);
+
+ path = gtk_tree_path_new_from_indices (0, 8, -1);
+ gtk_tree_model_get_iter (model, &iter, path);
+ gtk_tree_path_free (path);
+ gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo), &iter);
+
+ /* A GtkComboBoxEntry
+ */
+ frame = gtk_frame_new ("Editable");
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+
+ box = gtk_vbox_new (FALSE, 0);
+ gtk_container_set_border_width (GTK_CONTAINER (box), 5);
+ gtk_container_add (GTK_CONTAINER (frame), box);
+
+ combo = gtk_combo_box_entry_new_text ();
+ fill_combo_entry (combo);
+ gtk_container_add (GTK_CONTAINER (box), combo);
+
+ }
+
+ if (!GTK_WIDGET_VISIBLE (window))
+ {
+ gtk_widget_show_all (window);
+ }
+ else
+ {
+ gtk_widget_destroy (window);
+ window = NULL;
+ }
+
+ return window;
+}
projects / gtk4.git / commitdiff