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gtk-demo: Cosmetic improvement to the colors demo

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Make the count label not jump around, as the model
is refilled.
This commit is contained in:
Matthias Clasen 2020-06-21 01:06:58 -04:00 committed by Benjamin Otte
parent 727a78a74f
commit 9b8c0f3c7f
1 changed files with 27 additions and 0 deletions
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27
demos/gtk-demo/listview_colors.c
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@ -717,6 +717,23 @@ limit_changed_cb (GtkDropDown *dropdown,
gtk_color_list_set_size (colors, new_limit);
}
static void
limit_changed_cb2 (GtkDropDown *dropdown,
GParamSpec *pspec,
GtkLabel *label)
{
gpointer item;
char *string;
int len;
item = gtk_drop_down_get_selected_item (dropdown);
g_object_get (item, "string", &string, NULL);
len = g_utf8_strlen (string, -1);
g_free (string);
gtk_label_set_max_width_chars (label, len + 2); /* for " /" */
}
static void
items_changed_cb (GListModel *model,
guint position,
@ -750,6 +767,7 @@ do_listview_colors (GtkWidget *do_widget)
GtkExpression *expression;
GtkWidget *button;
GtkWidget *label;
PangoAttrList *attrs;
window = gtk_window_new ();
gtk_window_set_title (GTK_WINDOW (window), "Colors");
@ -778,6 +796,12 @@ do_listview_colors (GtkWidget *do_widget)
gtk_header_bar_pack_start (GTK_HEADER_BAR (header), button);
label = gtk_label_new ("0 /");
attrs = pango_attr_list_new ();
pango_attr_list_insert (attrs, pango_attr_font_features_new ("tnum"));
gtk_label_set_attributes (GTK_LABEL (label), attrs);
pango_attr_list_unref (attrs);
gtk_label_set_width_chars (GTK_LABEL (label), 6);
gtk_label_set_xalign (GTK_LABEL (label), 1);
g_signal_connect (gtk_grid_view_get_model (GTK_GRID_VIEW (gridview)),
"items-changed", G_CALLBACK (items_changed_cb), label);
gtk_header_bar_pack_start (GTK_HEADER_BAR (header), label);
@ -787,6 +811,9 @@ do_listview_colors (GtkWidget *do_widget)
g_signal_connect (dropdown, "notify::selected",
G_CALLBACK (limit_changed_cb),
gtk_sort_list_model_get_model (GTK_SORT_LIST_MODEL (model)));
g_signal_connect (dropdown, "notify::selected",
G_CALLBACK (limit_changed_cb2),
label);
gtk_drop_down_set_selected (GTK_DROP_DOWN (dropdown), 3); /* 4096 */
gtk_header_bar_pack_start (GTK_HEADER_BAR (header), dropdown);