[gtk+] gtk-demo: Display all resources on the right side

[Benjamin Otte <otte src gnome org>]

commit 4e41577b460747c1984fb705c04275dafe92412c
Author: Benjamin Otte <otte redhat com>
Date:   Fri Feb 1 18:21:56 2013 +0100

    gtk-demo: Display all resources on the right side
    
    This way, people know what stuff we are loading.
    
    And instead of listing all the files in the top (and forgetting things),
    we just take them from the resources list.

 demos/gtk-demo/main.c |   71 +++++++++++++++++++++++++++++++++++++-----------
 1 files changed, 54 insertions(+), 17 deletions(-)
---
diff --git a/demos/gtk-demo/main.c b/demos/gtk-demo/main.c
index e428a39..ff54891 100644
--- a/demos/gtk-demo/main.c
+++ b/demos/gtk-demo/main.c
@@ -401,26 +401,66 @@ fontify (void)
 static GtkWidget *create_text (GtkTextBuffer **buffer, gboolean is_source);
 
 static void
-add_data_tab (const gchar *demoname,
-              const gchar *filename)
+add_data_tab (const gchar *demoname)
 {
   GtkTextBuffer *buffer = NULL;
-  gchar *resource_name;
+  gchar *resource_dir, *resource_name, *content_type;
+  gchar **resources;
   GBytes *bytes;
   GtkWidget *widget, *label;
+  guint i;
 
-  resource_name = g_strconcat ("/", demoname, "/", filename, NULL);
-  bytes = g_resources_lookup_data (resource_name, 0, NULL);
-  g_assert (bytes);
-  g_free (resource_name);
+  resource_dir = g_strconcat ("/", demoname, NULL);
+  resources = g_resources_enumerate_children (resource_dir, 0, NULL);
+  if (resources == NULL)
+    {
+      g_free (resource_dir);
+      return;
+    }
+
+  for (i = 0; resources[i]; i++)
+    {
+      resource_name = g_strconcat (resource_dir, "/", resources[i], NULL);
+      bytes = g_resources_lookup_data (resource_name, 0, NULL);
+      g_assert (bytes);
+
+      content_type = g_content_type_guess (resource_name,
+                                           g_bytes_get_data (bytes, NULL),
+                                           g_bytes_get_size (bytes),
+                                           NULL);
+
+      /* In theory we should look at all the mime types gdk-pixbuf supports
+       * and go from there, but we know what file types we've added.
+       */
+      if (g_content_type_is_a (content_type, "image/png") ||
+          g_content_type_is_a (content_type, "image/gif") ||
+          g_content_type_is_a (content_type, "image/jpeg"))
+        {
+          widget = gtk_image_new_from_resource (resource_name);
+        }
+      else if (g_content_type_is_a (content_type, "text/plain"))
+        {
+          widget = create_text (&buffer, FALSE);
+          gtk_text_buffer_set_text (buffer, g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes));
+        }
+      else
+        {
+          g_warning ("Don't know how to display resource '%s' of type '%s'\n", resource_name, content_type);
+          widget = NULL;
+        }
+
+      gtk_widget_show_all (widget);
+      label = gtk_label_new (resources[i]);
+      gtk_widget_show (label);
+      gtk_notebook_append_page (GTK_NOTEBOOK (notebook), widget, label);
 
-  widget = create_text (&buffer, FALSE);
-  gtk_widget_show_all (widget);
-  label = gtk_label_new (filename);
-  gtk_widget_show (label);
-  gtk_notebook_append_page (GTK_NOTEBOOK (notebook), widget, label);
+      g_free (content_type);
+      g_free (resource_name);
+      g_bytes_unref (bytes);
+    }
 
-  gtk_text_buffer_set_text (buffer, g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes));
+  g_strfreev (resources);
+  g_free (resource_dir);
 }
 
 static void
@@ -449,10 +489,7 @@ load_file (const gchar *demoname,
 
   names = g_strsplit (filename, " ", -1);
 
-  for (i = 1; names[i]; i++) {
-    if (strlen (names[i]) > 0)
-      add_data_tab (demoname, names[i]);
-  }
+  add_data_tab (demoname);
 
   if (current_file && !strcmp (current_file, names[0]))
     goto out;