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gtk-demo: Add an example for dropdown sections

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Make one of the dropdowns in the Selections
demo have sections.
This commit is contained in:
Matthias Clasen
2023-06-16 21:12:47 -04:00
parent 1347d23658
commit 0652e05e0b
1 changed files with 55 additions and 6 deletions
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61
demos/gtk-demo/listview_selections.c
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@@ -368,6 +368,38 @@ match_func (MatchObject *obj,
g_free (tmp2);
}
static void
setup_header (GtkSignalListItemFactory *factory,
GObject *list_item,
gpointer data)
{
GtkListHeader *self = GTK_LIST_HEADER (list_item);
GtkWidget *child;
child = gtk_label_new ("");
gtk_label_set_xalign (GTK_LABEL (child), 0);
gtk_label_set_use_markup (GTK_LABEL (child), TRUE);
gtk_widget_set_margin_top (child, 10);
gtk_widget_set_margin_bottom (child, 10);
gtk_list_header_set_child (self, child);
}
static void
bind_header (GtkSignalListItemFactory *factory,
GObject *list_item,
gpointer data)
{
GtkListHeader *self = GTK_LIST_HEADER (list_item);
GtkWidget *child = gtk_list_header_get_child (self);
GObject *item = gtk_list_header_get_item (self);
if (strstr (gtk_string_object_get_string (GTK_STRING_OBJECT (item)), "hour"))
gtk_label_set_label (GTK_LABEL (child), "<big><b>Hours</b></big>");
else
gtk_label_set_label (GTK_LABEL (child), "<big><b>Minutes</b></big>");
}
GtkWidget *
do_listview_selections (GtkWidget *do_widget)
{
@@ -377,10 +409,12 @@ do_listview_selections (GtkWidget *do_widget)
GtkExpression *expression;
GtkListItemFactory *factory;
const char * const times[] = { "1 minute", "2 minutes", "5 minutes", "20 minutes", NULL };
const char * const many_times[] = {
const char * const minutes[] = {
"1 minute", "2 minutes", "5 minutes", "10 minutes", "15 minutes", "20 minutes",
"25 minutes", "30 minutes", "35 minutes", "40 minutes", "45 minutes", "50 minutes",
"55 minutes", "1 hour", "2 hours", "3 hours", "5 hours", "6 hours", "7 hours",
"55 minutes", NULL
};
const char * const hours[] = { "1 hour", "2 hours", "3 hours", "5 hours", "6 hours", "7 hours",
"8 hours", "9 hours", "10 hours", "11 hours", "12 hours", NULL
};
const char * const device_titles[] = { "Digital Output", "Headphones", "Digital Output", "Analog Output", NULL };
@@ -395,6 +429,10 @@ do_listview_selections (GtkWidget *do_widget)
if (!window)
{
GtkStringList *minutes_model, *hours_model;
GListStore *store;
GtkFlattenListModel *flat;
window = gtk_window_new ();
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
@@ -422,14 +460,25 @@ do_listview_selections (GtkWidget *do_widget)
gtk_box_append (GTK_BOX (box), button);
/* A dropdown using an expression to obtain strings */
button = drop_down_new_from_strings (many_times, NULL, NULL);
gtk_drop_down_set_enable_search (GTK_DROP_DOWN (button), TRUE);
minutes_model = gtk_string_list_new (minutes);
hours_model = gtk_string_list_new (hours);
store = g_list_store_new (G_TYPE_LIST_MODEL);
g_list_store_append (store, minutes_model);
g_list_store_append (store, hours_model);
g_object_unref (minutes_model);
g_object_unref (hours_model);
flat = gtk_flatten_list_model_new (G_LIST_MODEL (store));
expression = gtk_cclosure_expression_new (G_TYPE_STRING, NULL,
0, NULL,
(GCallback)get_title,
NULL, NULL);
gtk_drop_down_set_expression (GTK_DROP_DOWN (button), expression);
gtk_expression_unref (expression);
button = gtk_drop_down_new (G_LIST_MODEL (flat), expression);
gtk_drop_down_set_enable_search (GTK_DROP_DOWN (button), TRUE);
factory = gtk_signal_list_item_factory_new ();
g_signal_connect (factory, "setup", G_CALLBACK (setup_header), NULL);
g_signal_connect (factory, "bind", G_CALLBACK (bind_header), NULL);
gtk_drop_down_set_header_factory (GTK_DROP_DOWN (button), factory);
g_object_unref (factory);
gtk_box_append (GTK_BOX (box), button);
button = gtk_drop_down_new (NULL, NULL);