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gtk-demo: Improve formatting in the color demo

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Properly align and format the numbers in the size
dropdown.
This commit is contained in:
Matthias Clasen 2020-06-26 22:57:56 -04:00
parent 0d10982379
commit 5d11e9812d
1 changed files with 54 additions and 9 deletions
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63
demos/gtk-demo/listview_colors.c
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@ -9,9 +9,9 @@
* The dataset used here has up to 16 777 216 items.
*
* Note that this demo also functions as a performance
* test for some of the list model machinery, and biggest
* sizes here can lock up the application for extended
* times when used with sorting.
* test for some of the list model machinery, and the
* biggest sizes here can lock up the application for
* extended times when used with sorting.
*/
#include <gtk/gtk.h>
@ -715,16 +715,17 @@ limit_changed_cb2 (GtkDropDown *dropdown,
GParamSpec *pspec,
GtkLabel *label)
{
gpointer item;
char *string;
int len;
guint limit;
item = gtk_drop_down_get_selected_item (dropdown);
g_object_get (item, "string", &string, NULL);
limit = 1 << (3 * (gtk_drop_down_get_selected (dropdown) + 1));
string = g_strdup_printf ("%'u", limit);
len = g_utf8_strlen (string, -1);
g_free (string);
gtk_label_set_max_width_chars (label, len + 2); /* for " /" */
gtk_label_set_width_chars (label, len + 2); /* for " /" */
}
static void
@ -737,11 +738,44 @@ items_changed_cb (GListModel *model,
guint n = g_list_model_get_n_items (model);
char *text;
text = g_strdup_printf ("%u /", n);
text = g_strdup_printf ("%'u /", n);
gtk_label_set_label (GTK_LABEL (label), text);
g_free (text);
}
static void
setup_number_item (GtkSignalListItemFactory *factory,
GtkListItem *item)
{
GtkWidget *label;
PangoAttrList *attrs;
label = gtk_label_new ("");
gtk_label_set_xalign (GTK_LABEL (label), 1);
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_list_item_set_child (item, label);
}
static void
bind_number_item (GtkSignalListItemFactory *factory,
GtkListItem *item)
{
GtkWidget *label;
guint limit;
char *string;
label = gtk_list_item_get_child (item);
limit = 1 << (3 * (gtk_list_item_get_position (item) + 1));
string = g_strdup_printf ("%'u", limit);
gtk_label_set_label (GTK_LABEL (label), string);
g_free (string);
}
static GtkWidget *window = NULL;
@ -761,6 +795,8 @@ do_listview_colors (GtkWidget *do_widget)
GtkWidget *button;
GtkWidget *label;
PangoAttrList *attrs;
char *string;
guint len;
window = gtk_window_new ();
gtk_window_set_title (GTK_WINDOW (window), "Colors");
@ -793,8 +829,12 @@ do_listview_colors (GtkWidget *do_widget)
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);
string = g_strdup_printf ("%'u", 4096);
len = g_utf8_strlen (string, -1);
g_free (string);
gtk_label_set_width_chars (GTK_LABEL (label), len + 2);
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);
@ -807,6 +847,11 @@ do_listview_colors (GtkWidget *do_widget)
g_signal_connect (dropdown, "notify::selected",
G_CALLBACK (limit_changed_cb2),
label);
factory = gtk_signal_list_item_factory_new ();
g_signal_connect (factory, "setup", G_CALLBACK (setup_number_item), NULL);
g_signal_connect (factory, "bind", G_CALLBACK (bind_number_item), NULL);
gtk_drop_down_set_factory (GTK_DROP_DOWN (dropdown), factory);
g_object_unref (factory);
gtk_drop_down_set_selected (GTK_DROP_DOWN (dropdown), 3); /* 4096 */
gtk_header_bar_pack_start (GTK_HEADER_BAR (header), dropdown);