[gtk/wip/otte/sortlistmodel: 3/39] demo: Add faster sorters

[Benjamin Otte <otte src gnome org>]

commit c91bc17a24da011cd95b2a61a986c226a358fbf6
Author: Benjamin Otte <otte redhat com>
Date:   Tue Jul 7 19:05:06 2020 +0200

    demo: Add faster sorters
    
    This is just the existing sorters, but without the overhead of GObject
    properties.

 demos/gtk-demo/listview_colors.c | 60 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
---
diff --git a/demos/gtk-demo/listview_colors.c b/demos/gtk-demo/listview_colors.c
index 449c14b3c6..005c4b0594 100644
--- a/demos/gtk-demo/listview_colors.c
+++ b/demos/gtk-demo/listview_colors.c
@@ -835,6 +835,54 @@ update_selection_average (GListModel *model,
   g_object_unref (color);
 }
 
+static int
+compare_red (gconstpointer a,
+             gconstpointer b,
+             gpointer      unused)
+{
+  GtkColor *colora = (GtkColor *) a;
+  GtkColor *colorb = (GtkColor *) b;
+
+  if (colora->color.red < colorb->color.red)
+    return GTK_ORDERING_LARGER;
+  else if (colora->color.red > colorb->color.red)
+    return GTK_ORDERING_SMALLER;
+  else
+    return GTK_ORDERING_EQUAL;
+}
+
+static int
+compare_green (gconstpointer a,
+               gconstpointer b,
+               gpointer      unused)
+{
+  GtkColor *colora = (GtkColor *) a;
+  GtkColor *colorb = (GtkColor *) b;
+
+  if (colora->color.green < colorb->color.green)
+    return GTK_ORDERING_LARGER;
+  else if (colora->color.green > colorb->color.green)
+    return GTK_ORDERING_SMALLER;
+  else
+    return GTK_ORDERING_EQUAL;
+}
+
+static int
+compare_blue (gconstpointer a,
+              gconstpointer b,
+              gpointer      unused)
+{
+  GtkColor *colora = (GtkColor *) a;
+  GtkColor *colorb = (GtkColor *) b;
+
+  if (colora->color.blue < colorb->color.blue)
+    return GTK_ORDERING_LARGER;
+  else if (colora->color.blue > colorb->color.blue)
+    return GTK_ORDERING_SMALLER;
+  else
+    return GTK_ORDERING_EQUAL;
+}
+
 static GtkWidget *window = NULL;
 
 GtkWidget *
@@ -1022,18 +1070,30 @@ do_listview_colors (GtkWidget *do_widget)
       g_list_store_append (sorters, sorter);
       gtk_multi_sorter_append (GTK_MULTI_SORTER (multi_sorter), sorter);
 
+      sorter = gtk_custom_sorter_new (compare_red, NULL, NULL);
+      set_title (sorter, "Red (fast)");
+      g_list_store_append (sorters, sorter);
+
       sorter = gtk_numeric_sorter_new (gtk_property_expression_new (GTK_TYPE_COLOR, NULL, "green"));
       gtk_numeric_sorter_set_sort_order (GTK_NUMERIC_SORTER (sorter), GTK_SORT_DESCENDING);
       set_title (sorter, "Green");
       g_list_store_append (sorters, sorter);
       gtk_multi_sorter_append (GTK_MULTI_SORTER (multi_sorter), sorter);
 
+      sorter = gtk_custom_sorter_new (compare_green, NULL, NULL);
+      set_title (sorter, "Green (fast)");
+      g_list_store_append (sorters, sorter);
+
       sorter = gtk_numeric_sorter_new (gtk_property_expression_new (GTK_TYPE_COLOR, NULL, "blue"));
       gtk_numeric_sorter_set_sort_order (GTK_NUMERIC_SORTER (sorter), GTK_SORT_DESCENDING);
       set_title (sorter, "Blue");
       g_list_store_append (sorters, sorter);
       gtk_multi_sorter_append (GTK_MULTI_SORTER (multi_sorter), sorter);
 
+      sorter = gtk_custom_sorter_new (compare_blue, NULL, NULL);
+      set_title (sorter, "Blue (fast)");
+      g_list_store_append (sorters, sorter);
+
       set_title (multi_sorter, "RGB");
       g_list_store_append (sorters, multi_sorter);
       g_object_unref (multi_sorter);