moving trunk for module inkscape

(bzr r1)

1 files changed, 223 insertions, 0 deletions

diff --git a/src/sp-metadata.cpp b/src/sp-metadata.cpp
new file mode 100644
index 000000000..0f4b1fb1d
--- /dev/null
+++ b/src/sp-metadata.cpp
@@ -0,0 +1,223 @@
+#define __SP_METADATA_C__
+
+/*
+ * SVG <metadata> implementation
+ *
+ * Authors:
+ *   Kees Cook <kees@outflux.net>
+ *
+ * Copyright (C) 2004 Kees Cook
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "sp-metadata.h"
+#include "xml/node-iterators.h"
+#include "document.h"
+
+#include "sp-item-group.h"
+
+#define noDEBUG_METADATA
+#ifdef DEBUG_METADATA
+# define debug(f, a...) { g_print("%s(%d) %s:", \
+                                  __FILE__,__LINE__,__FUNCTION__); \
+                          g_print(f, ## a); \
+                          g_print("\n"); \
+                        }
+#else
+# define debug(f, a...) /**/
+#endif
+
+/* Metadata base class */
+
+static void sp_metadata_class_init (SPMetadataClass *klass);
+static void sp_metadata_init (SPMetadata *metadata);
+
+static void sp_metadata_build (SPObject * object, SPDocument * document, Inkscape::XML::Node * repr);
+static void sp_metadata_release (SPObject *object);
+static void sp_metadata_set (SPObject *object, unsigned int key, const gchar *value);
+static void sp_metadata_update(SPObject *object, SPCtx *ctx, guint flags);
+static Inkscape::XML::Node *sp_metadata_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
+
+static SPObjectClass *metadata_parent_class;
+
+GType
+sp_metadata_get_type (void)
+{
+    static GType metadata_type = 0;
+
+    if (!metadata_type) {
+        GTypeInfo metadata_info = {
+            sizeof (SPMetadataClass),
+            NULL, NULL,
+            (GClassInitFunc) sp_metadata_class_init,
+            NULL, NULL,
+            sizeof (SPMetadata),
+            16,
+            (GInstanceInitFunc) sp_metadata_init,
+            NULL,    /* value_table */
+        };
+        metadata_type = g_type_register_static (SP_TYPE_OBJECT, "SPMetadata", &metadata_info, (GTypeFlags)0);
+    }
+    return metadata_type;
+}
+
+static void
+sp_metadata_class_init (SPMetadataClass *klass)
+{
+    //GObjectClass *gobject_class = (GObjectClass *)klass;
+    SPObjectClass *sp_object_class = (SPObjectClass *)klass;
+
+    metadata_parent_class = (SPObjectClass*)g_type_class_peek_parent (klass);
+
+    sp_object_class->build = sp_metadata_build;
+    sp_object_class->release = sp_metadata_release;
+    sp_object_class->write = sp_metadata_write;
+    sp_object_class->set = sp_metadata_set;
+    sp_object_class->update = sp_metadata_update;
+}
+
+static void
+sp_metadata_init (SPMetadata *metadata)
+{
+    debug("0x%08x",(unsigned int)metadata);
+}
+
+namespace {
+
+void strip_ids_recursively(Inkscape::XML::Node *node) {
+    using Inkscape::XML::NodeSiblingIterator;
+    if ( node->type() == Inkscape::XML::ELEMENT_NODE ) {
+        node->setAttribute("id", NULL);
+    }
+    for ( NodeSiblingIterator iter=node->firstChild() ; iter ; ++iter ) {
+        strip_ids_recursively(iter);
+    }
+}
+
+}
+
+/*
+ * \brief Reads the Inkscape::XML::Node, and initializes SPMetadata variables.
+ *        For this to get called, our name must be associated with
+ *        a repr via "sp_object_type_register".  Best done through
+ *        sp-object-repr.cpp's repr_name_entries array.
+ */
+static void
+sp_metadata_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
+{
+    using Inkscape::XML::NodeSiblingIterator;
+
+    debug("0x%08x",(unsigned int)object);
+
+    /* clean up our mess from earlier versions; elements under rdf:RDF should not
+     * have id= attributes... */
+    static GQuark const rdf_root_name=g_quark_from_static_string("rdf:RDF");
+    for ( NodeSiblingIterator iter=repr->firstChild() ; iter ; ++iter ) {
+        if ( (GQuark)iter->code() == rdf_root_name ) {
+            strip_ids_recursively(iter);
+        }
+    }
+
+    if (((SPObjectClass *) metadata_parent_class)->build)
+        ((SPObjectClass *) metadata_parent_class)->build (object, document, repr);
+}
+
+/*
+ * \brief Drops any allocated memory
+ */
+static void
+sp_metadata_release (SPObject *object)
+{
+    debug("0x%08x",(unsigned int)object);
+
+    /* handle ourself */
+
+    if (((SPObjectClass *) metadata_parent_class)->release)
+        ((SPObjectClass *) metadata_parent_class)->release (object);
+}
+
+/*
+ * \brief Sets a specific value in the SPMetadata
+ */
+static void
+sp_metadata_set (SPObject *object, unsigned int key, const gchar *value)
+{
+    debug("0x%08x %s(%u): '%s'",(unsigned int)object,
+            sp_attribute_name(key),key,value);
+    SPMetadata * metadata;
+
+    metadata = SP_METADATA (object);
+
+    /* see if any parents need this value */
+    if (((SPObjectClass *) metadata_parent_class)->set)
+        ((SPObjectClass *) metadata_parent_class)->set (object, key, value);
+}
+
+/*
+ * \brief Receives update notifications
+ */
+static void
+sp_metadata_update(SPObject *object, SPCtx *ctx, guint flags)
+{
+    debug("0x%08x",(unsigned int)object);
+    //SPMetadata *metadata = SP_METADATA(object);
+
+    if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG |
+                 SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) {
+
+        /* do something? */
+
+    }
+
+    if (((SPObjectClass *) metadata_parent_class)->update)
+        ((SPObjectClass *) metadata_parent_class)->update(object, ctx, flags);
+}
+
+/*
+ * \brief Writes it's settings to an incoming repr object, if any
+ */
+static Inkscape::XML::Node *
+sp_metadata_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
+{
+    debug("0x%08x",(unsigned int)object);
+    //SPMetadata *metadata = SP_METADATA(object);
+
+    // only create a repr when we're writing out an Inkscape SVG
+    if ( flags & SP_OBJECT_WRITE_EXT && repr != SP_OBJECT_REPR(object) ) {
+        if (repr) {
+            repr->mergeFrom(SP_OBJECT_REPR (object), "id");
+        } else {
+            repr = SP_OBJECT_REPR (object)->duplicate();
+        }
+    }
+
+    if (((SPObjectClass *) metadata_parent_class)->write)
+        ((SPObjectClass *) metadata_parent_class)->write(object, repr, flags);
+
+    return repr;
+}
+
+/*
+ * \brief Retrieves the metadata object associated with a document
+ */
+SPMetadata *
+sp_document_metadata (SPDocument *document)
+{
+    SPObject *nv;
+
+    g_return_val_if_fail (document != NULL, NULL);
+
+    nv = sp_item_group_get_child_by_name ((SPGroup *) document->root, NULL,
+                                        "metadata");
+    g_assert (nv != NULL);
+
+    return (SPMetadata *)nv;
+}
+
+
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :