Output default value and possible value ranges

1 files changed, 75 insertions, 6 deletions

diff --git a/tools/gen-doc.c b/tools/gen-doc.c
index f555a5f..eb61cc9 100644
--- a/tools/gen-doc.c
+++ b/tools/gen-doc.c
@@ -67,9 +67,9 @@ print_property_toc (GParamSpec **pspecs, guint n_props)
     g_print ("<h2>Properties</h2><ul id=\"toc\">");
 
     for (guint i = 0; i < n_props; i++) {
-        GParamSpec *pspec = pspecs[i]; 
+        GParamSpec *pspec = pspecs[i];
         const gchar *name = g_param_spec_get_name (pspec);
-    
+
         g_print ("<li><code><a href=#%s>\"%s\"</a></code></li>", name, name);
     }
 
@@ -77,21 +77,90 @@ print_property_toc (GParamSpec **pspecs, guint n_props)
 }
 
 static void
+print_value_info (GParamSpec *pspec)
+{
+    gchar *default_value = NULL;
+    GString *range = g_string_new("");
+
+#define MAKE_RANGE(spec_type, fmt)              \
+    {                                           \
+        spec_type *spec = (spec_type *) pspec;  \
+        g_string_printf (range,                                     \
+                         fmt" &#8804; <em>%s</em> &#8804; "fmt,     \
+                         spec->minimum,                             \
+                         g_param_spec_get_name (pspec),             \
+                         spec->maximum);                            \
+        default_value = g_strdup_printf (fmt, spec->default_value); \
+    }
+
+    switch (pspec->value_type) {
+        case G_TYPE_BOOLEAN:
+            {
+                GParamSpecBoolean *spec = (GParamSpecBoolean *) pspec;
+                default_value = spec->default_value ? g_strdup ("<code>TRUE</code>") : g_strdup ("<code>FALSE</code>");
+            }
+            break;
+
+        case G_TYPE_UINT:
+            MAKE_RANGE (GParamSpecUInt, "%i");
+            break;
+
+        case G_TYPE_FLOAT:
+            MAKE_RANGE (GParamSpecFloat, "%.1e");
+            break;
+
+        case G_TYPE_DOUBLE:
+            MAKE_RANGE (GParamSpecDouble, "%.1e");
+            break;
+    }
+
+#undef MAKE_RANGE
+
+    if (g_type_is_a (pspec->value_type, G_TYPE_ENUM)) {
+        GParamSpecEnum *spec = (GParamSpecEnum *) pspec;
+
+        if (spec->enum_class->n_values > 0) {
+            g_string_printf (range, "<table><tr><th>Enum name</th><th>Value</th>");
+
+            for (guint i = 0; i < spec->enum_class->n_values; i++) {
+                GEnumValue *v = &spec->enum_class->values[i];
+                g_string_append_printf (range,
+                                        "<tr><td><code>%s</code></td><td>%i</td></tr>",
+                                        v->value_name, v->value);
+            }
+
+            g_string_append_printf (range, "</table>");
+        }
+    }
+
+    if (range->len > 0)
+        g_print ("<p>Possible values: %s</p>", range->str);
+
+    if (default_value != NULL) {
+        g_print ("<p>Default value: %s</p>", default_value);
+        g_free (default_value);
+    }
+
+    g_string_free (range, TRUE);
+}
+
+static void
 print_property_descriptions (GParamSpec **pspecs, guint n_props)
 {
     g_print ("<h2>Details</h2><dl>");
 
     for (guint i = 0; i < n_props; i++) {
-        GParamSpec *pspec = pspecs[i]; 
+        GParamSpec *pspec = pspecs[i];
         const gchar *name = g_param_spec_get_name (pspec);
 
         g_print ("<dt id=\"%s\"><a href=\"#toc\">%s</a></dt>\n", name, name);
         g_print ("<dd>");
-        g_print ("<pre><code class=\"prop-type\">\"%s\" : %s : %s</code></pre>\n", 
-                 name, 
+        g_print ("<pre><code class=\"prop-type\">\"%s\" : %s : %s</code></pre>\n",
+                 name,
                  g_type_name (pspec->value_type),
                  get_flags_description (pspec));
         g_print ("<p>%s</p>\n", g_param_spec_get_blurb (pspec));
+        print_value_info (pspec);
         g_print ("</dd>");
     }
 
@@ -104,7 +173,7 @@ print_properties (UcaCamera *camera)
     GObjectClass *oclass;
     GParamSpec **pspecs;
     guint n_props;
-    
+
     oclass = G_OBJECT_GET_CLASS (camera);
     pspecs = g_object_class_list_properties (oclass, &n_props);