Author: abrander
Date: 2009-10-14 14:39:07 +0200 (Wed, 14 Oct 2009)
New Revision: 2713
Modified:
trunk/librawstudio/rs-filter.c
trunk/librawstudio/rs-filter.h
Log:
Implemented rs_filter_set_recursive().
Modified: trunk/librawstudio/rs-filter.c
===================================================================
--- trunk/librawstudio/rs-filter.c 2009-10-14 00:42:36 UTC (rev 2712)
+++ trunk/librawstudio/rs-filter.c 2009-10-14 12:39:07 UTC (rev 2713)
@@ -347,6 +347,95 @@
}
/**
+ * Set a GObject property on zero or more filters above #filter recursively
+ * @param filter A RSFilter
+ * @param ... Pairs of property names and values followed by NULL
+ */
+void
+rs_filter_set_recursive(RSFilter *filter, ...)
+{
+ va_list ap;
+ gchar *property_name;
+ RSFilter *current_filter;
+ GParamSpec *spec;
+ RSFilter *first_seen_here;
+ GTypeValueTable *table = NULL;
+ GType type;
+ union CValue {
+ gint v_int;
+ glong v_long;
+ gint64 v_int64;
+ gdouble v_double;
+ gpointer v_pointer;
+ } value;
+
+ g_assert(RS_IS_FILTER(filter));
+
+ va_start(ap, filter);
+
+ /* Loop through all properties */
+ while ((property_name = va_arg(ap, gchar *)))
+ {
+ /* We set table to NULL for every property to indicate that we
(again)
+ * have an "unknown" type */
+ table = NULL;
+
+ current_filter = filter;
+ /* Iterate through all filters previous to filter */
+ do {
+ if (spec =
g_object_class_find_property(G_OBJECT_GET_CLASS(current_filter), property_name))
+ if (spec->flags & G_PARAM_WRITABLE)
+ {
+ /* If we got no GTypeValueTable at this
point, we aquire
+ * one. We rely on all filters using
the same type for all
+ * properties equally named */
+ if (!table)
+ {
+ first_seen_here =
current_filter;
+ type = spec->value_type;
+ table =
g_type_value_table_peek(type);
+
+ /* If we have no valuetable,
we're screwed, bail out */
+ if (!table)
+ g_error("No
GTypeValueTable found for '%s'", g_type_name(type));
+
+ switch
(table->collect_format[0])
+ {
+ case 'i': value.v_int =
va_arg(ap, gint); break;
+ case 'l': value.v_long
= va_arg(ap, glong); break;
+ case 'd':
value.v_double = va_arg(ap, gdouble); break;
+ case 'p':
value.v_pointer = va_arg(ap, gpointer); break;
+ default: g_error("Don't
know how to collect for '%s'", g_type_name(type)); break;
+ }
+ }
+
+ if (table)
+ {
+ /* We try to catch cases where
different filters use
+ * the same property name for
different types */
+ if (type != spec->value_type)
+ g_warning("Diverging
types found for property '%s' (on filter '%s' and '%s')",
+ property_name,
+
RS_FILTER_NAME(first_seen_here),
+
RS_FILTER_NAME(current_filter));
+
+ switch
(table->collect_format[0])
+ {
+ case 'i':
g_object_set(current_filter, property_name, value.v_int, NULL); break;
+ case 'l':
g_object_set(current_filter, property_name, value.v_long, NULL); break;
+ case 'd':
g_object_set(current_filter, property_name, value.v_double, NULL); break;
+ case 'p':
g_object_set(current_filter, property_name, value.v_pointer, NULL); break;
+ default: break;
+ }
+ }
+ }
+ } while (RS_IS_FILTER(current_filter =
current_filter->previous));
+ }
+
+ va_end(ap);
+}
+
+/**
* Get a GObject property from a RSFilter chain recursively
* @param filter A RSFilter
* @param ... Pairs of property names and a return pointers followed by NULL
Modified: trunk/librawstudio/rs-filter.h
===================================================================
--- trunk/librawstudio/rs-filter.h 2009-10-14 00:42:36 UTC (rev 2712)
+++ trunk/librawstudio/rs-filter.h 2009-10-14 12:39:07 UTC (rev 2713)
@@ -166,6 +166,14 @@
extern gint rs_filter_get_height(RSFilter *filter);
/**
+ * Set a GObject property on zero or more filters above #filter recursively
+ * @param filter A RSFilter
+ * @param ... Pairs of property names and values followed by NULL
+ */
+void
+rs_filter_set_recursive(RSFilter *filter, ...);
+
+/**
* Get a GObject property from a RSFilter chain recursively
* @param filter A RSFilter
* @param ... Pairs of property names and a return pointers followed by NULL
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