index 9bfaff4aa6751dfc7ca94d56cd7a84f41400fb5d..77325c4b11fa9041d2b79ccd8857e167aaff569d 100644 (file)
static Inkscape::XML::Node *
sp_filter_primitive_write(SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags)
{
- //SPFilterPrimitive *filterPrimitive = SP_FILTER_PRIMITIVE(object);
+ SPFilterPrimitive *prim = SP_FILTER_PRIMITIVE(object);
+ SPFilter *parent = SP_FILTER(object->parent);
- // Inkscape-only object, not copied during an "plain SVG" dump:
- if (flags & SP_OBJECT_WRITE_EXT) {
- if (repr) {
- // is this sane?
- //repr->mergeFrom(SP_OBJECT_REPR(object), "id");
- } else {
- repr = SP_OBJECT_REPR(object)->duplicate(doc);
- }
+ if (!repr) {
+ repr = SP_OBJECT_REPR(object)->duplicate(doc);
}
+ gchar const *in_name = sp_filter_name_for_image(parent, prim->image_in);
+ repr->setAttribute("in", in_name);
+
+ gchar const *out_name = sp_filter_name_for_image(parent, prim->image_out);
+ repr->setAttribute("result", out_name);
+
if (((SPObjectClass *) filter_primitive_parent_class)->write) {
((SPObjectClass *) filter_primitive_parent_class)->write(object, doc, repr, flags);
}
@@ -242,6 +243,31 @@ int sp_filter_primitive_read_result(SPFilterPrimitive *prim, gchar const *name)
return Inkscape::Filters::NR_FILTER_SLOT_NOT_SET;
}
+/**
+ * Gives name for output of previous filter. Makes things clearer when prim
+ * is a filter with two or more inputs. Returns the slot number of result
+ * of previous primitive, or NR_FILTER_SOURCEGRAPHIC if this is the first
+ * primitive.
+ */
+int sp_filter_primitive_name_previous_out(SPFilterPrimitive *prim) {
+ SPFilter *parent = SP_FILTER(prim->parent);
+ SPObject *i = parent->children;
+ while (i && i->next != prim) i = i->next;
+ if (i) {
+ SPFilterPrimitive *i_prim = SP_FILTER_PRIMITIVE(i);
+ if (i_prim->image_out < 0) {
+ Glib::ustring name = sp_filter_get_new_result_name(parent);
+ int slot = sp_filter_set_image_name(parent, name.c_str());
+ i_prim->image_out = slot;
+ i_prim->repr->setAttribute("result", name.c_str());
+ return slot;
+ } else {
+ return i_prim->image_out;
+ }
+ }
+ return Inkscape::Filters::NR_FILTER_SOURCEGRAPHIC;
+}
+
/* Common initialization for filter primitives */
void sp_filter_primitive_renderer_common(SPFilterPrimitive *sp_prim, Inkscape::Filters::FilterPrimitive *nr_prim)
{