Added support for feMerge filter priitive

(bzr r3308)

1 files changed, 177 insertions, 0 deletions

diff --git a/src/sp-femergenode.cpp b/src/sp-femergenode.cpp
new file mode 100644
index 000000000..09687e54b
--- /dev/null
+++ b/src/sp-femergenode.cpp
@@ -0,0 +1,177 @@
+#define __SP_FEMERGENODE_CPP__
+
+/** \file
+ * feMergeNode implementation. A feMergeNode contains the name of one
+ * input image for feMerge.
+ */
+/*
+ * Authors:
+ *   Kees Cook <kees@outflux.net>
+ *   Niko Kiirala <niko@kiirala.com>
+ *
+ * Copyright (C) 2004,2007 authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "attributes.h"
+#include "xml/repr.h"
+#include "sp-femergenode.h"
+#include "sp-femerge.h"
+
+static void sp_feMergeNode_class_init(SPFeMergeNodeClass *klass);
+static void sp_feMergeNode_init(SPFeMergeNode *skeleton);
+
+static void sp_feMergeNode_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
+static void sp_feMergeNode_release(SPObject *object);
+static void sp_feMergeNode_set(SPObject *object, unsigned int key, gchar const *value);
+static void sp_feMergeNode_update(SPObject *object, SPCtx *ctx, guint flags);
+static Inkscape::XML::Node *sp_feMergeNode_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
+
+static SPObjectClass *feMergeNode_parent_class;
+
+GType
+sp_feMergeNode_get_type()
+{
+    static GType feMergeNode_type = 0;
+
+    if (!feMergeNode_type) {
+        GTypeInfo feMergeNode_info = {
+            sizeof(SPFeMergeNodeClass),
+            NULL, NULL,
+            (GClassInitFunc) sp_feMergeNode_class_init,
+            NULL, NULL,
+            sizeof(SPFeMergeNode),
+            16,
+            (GInstanceInitFunc) sp_feMergeNode_init,
+            NULL,    /* value_table */
+        };
+        feMergeNode_type = g_type_register_static(SP_TYPE_OBJECT, "SPFeMergeNode", &feMergeNode_info, (GTypeFlags)0);
+    }
+    return feMergeNode_type;
+}
+
+static void
+sp_feMergeNode_class_init(SPFeMergeNodeClass *klass)
+{
+    //GObjectClass *gobject_class = (GObjectClass *)klass;
+    SPObjectClass *sp_object_class = (SPObjectClass *)klass;
+
+    feMergeNode_parent_class = (SPObjectClass*)g_type_class_peek_parent(klass);
+
+    sp_object_class->build = sp_feMergeNode_build;
+    sp_object_class->release = sp_feMergeNode_release;
+    sp_object_class->write = sp_feMergeNode_write;
+    sp_object_class->set = sp_feMergeNode_set;
+    sp_object_class->update = sp_feMergeNode_update;
+}
+
+static void
+sp_feMergeNode_init(SPFeMergeNode *feMergeNode)
+{
+    feMergeNode->input = NR::NR_FILTER_SLOT_NOT_SET;
+}
+
+/**
+ * Reads the Inkscape::XML::Node, and initializes SPFeMergeNode 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_feMergeNode_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
+{
+    sp_object_read_attr(object, "in");
+}
+
+/**
+ * Drops any allocated memory.
+ */
+static void
+sp_feMergeNode_release(SPObject *object)
+{
+    /* deal with our children and our selves here */
+
+    if (((SPObjectClass *) feMergeNode_parent_class)->release)
+        ((SPObjectClass *) feMergeNode_parent_class)->release(object);
+}
+
+/**
+ * Sets a specific value in the SPFeMergeNode.
+ */
+static void
+sp_feMergeNode_set(SPObject *object, unsigned int key, gchar const *value)
+{
+    SPFeMergeNode *feMergeNode = SP_FEMERGENODE(object);
+    SPFeMerge *parent = SP_FEMERGE(object->parent);
+
+    if (key == SP_ATTR_IN) {
+        int input = sp_filter_primitive_read_in(parent, value);
+        if (input != feMergeNode->input) {
+            feMergeNode->input = input;
+            object->requestModified(SP_OBJECT_MODIFIED_FLAG);
+        }
+    }
+
+    /* See if any parents need this value. */
+    if (((SPObjectClass *) feMergeNode_parent_class)->set) {
+        ((SPObjectClass *) feMergeNode_parent_class)->set(object, key, value);
+    }
+}
+
+/**
+ * Receives update notifications.
+ */
+static void
+sp_feMergeNode_update(SPObject *object, SPCtx *ctx, guint flags)
+{
+    //SPFeMergeNode *feMergeNode = SP_FEMERGENODE(object);
+
+    if (flags & SP_OBJECT_MODIFIED_FLAG) {
+        object->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
+    }
+
+    if (((SPObjectClass *) feMergeNode_parent_class)->update) {
+        ((SPObjectClass *) feMergeNode_parent_class)->update(object, ctx, flags);
+    }
+}
+
+/**
+ * Writes its settings to an incoming repr object, if any.
+ */
+static Inkscape::XML::Node *
+sp_feMergeNode_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
+{
+    //SPFeMergeNode *feMergeNode = SP_FEMERGENODE(object);
+
+    // 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(NULL); // FIXME
+        }
+    }
+
+    if (((SPObjectClass *) feMergeNode_parent_class)->write) {
+        ((SPObjectClass *) feMergeNode_parent_class)->write(object, repr, flags);
+    }
+
+    return repr;
+}
+
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :