1 files changed, 224 insertions, 0 deletions
diff --git a/src/live_effects/lpeobject.cpp b/src/live_effects/lpeobject.cpp
new file mode 100644
index 0000000..7a17364
--- /dev/null
+++ b/src/live_effects/lpeobject.cpp
@@ -0,0 +1,224 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) Johan Engelen 2007-2008 <j.b.c.engelen@utwente.nl>
+ *   Abhishek Sharma
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "live_effects/lpeobject.h"
+
+#include "live_effects/effect.h"
+
+#include "xml/repr.h"
+#include "xml/node-event-vector.h"
+#include "attributes.h"
+#include "document.h"
+
+#include "object/sp-defs.h"
+
+//#define LIVEPATHEFFECT_VERBOSE
+
+static void livepatheffect_on_repr_attr_changed (Inkscape::XML::Node * repr, const gchar *key, const gchar *oldval, const gchar *newval, bool is_interactive, void * data);
+
+static Inkscape::XML::NodeEventVector const livepatheffect_repr_events = {
+    nullptr, /* child_added */
+    nullptr, /* child_removed */
+    livepatheffect_on_repr_attr_changed,
+    nullptr, /* content_changed */
+    nullptr  /* order_changed */
+};
+
+
+LivePathEffectObject::LivePathEffectObject()
+    : SPObject(), effecttype(Inkscape::LivePathEffect::INVALID_LPE), effecttype_set(false),
+      lpe(nullptr)
+{
+#ifdef LIVEPATHEFFECT_VERBOSE
+    g_message("Init livepatheffectobject");
+#endif
+}
+
+LivePathEffectObject::~LivePathEffectObject() = default;
+
+/**
+ * Virtual build: set livepatheffect attributes from its associated XML node.
+ */
+void LivePathEffectObject::build(SPDocument *document, Inkscape::XML::Node *repr) {
+    g_assert(SP_IS_OBJECT(this));
+
+    SPObject::build(document, repr);
+
+    this->readAttr(SPAttr::PATH_EFFECT);
+
+    if (repr) {
+        repr->addListener (&livepatheffect_repr_events, this);
+    }
+
+    /* Register ourselves, is this necessary? */
+//    document->addResource("path-effect", object);
+}
+
+/**
+ * Virtual release of livepatheffect members before destruction.
+ */
+void LivePathEffectObject::release() {
+    this->getRepr()->removeListenerByData(this);
+
+/*
+    if (object->document) {
+        // Unregister ourselves
+        sp_document_removeResource(object->document, "livepatheffect", object);
+    }
+
+    if (gradient->ref) {
+        gradient->modified_connection.disconnect();
+        gradient->ref->detach();
+        delete gradient->ref;
+        gradient->ref = NULL;
+    }
+
+    gradient->modified_connection.~connection();
+*/
+
+    if (this->lpe) {
+        delete this->lpe;
+        this->lpe = nullptr;
+    }
+
+    this->effecttype = Inkscape::LivePathEffect::INVALID_LPE;
+
+    SPObject::release();
+}
+
+/**
+ * Virtual set: set attribute to value.
+ */
+void LivePathEffectObject::set(SPAttr key, gchar const *value) {
+#ifdef LIVEPATHEFFECT_VERBOSE
+    g_print("Set livepatheffect");
+#endif
+
+    switch (key) {
+        case SPAttr::PATH_EFFECT:
+            if (this->lpe) {
+                delete this->lpe;
+                this->lpe = nullptr;
+            }
+
+            if ( value && Inkscape::LivePathEffect::LPETypeConverter.is_valid_key(value) ) {
+                this->effecttype = Inkscape::LivePathEffect::LPETypeConverter.get_id_from_key(value);
+                this->lpe = Inkscape::LivePathEffect::Effect::New(this->effecttype, this);
+                this->effecttype_set = true;
+            } else {
+                this->effecttype = Inkscape::LivePathEffect::INVALID_LPE;
+                this->lpe = nullptr;
+                this->effecttype_set = false;
+            }
+
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+    }
+
+    SPObject::set(key, value);
+}
+
+/**
+ * Virtual write: write object attributes to repr.
+ */
+Inkscape::XML::Node* LivePathEffectObject::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
+    if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
+        repr = xml_doc->createElement("inkscape:path-effect");
+    }
+
+    if ((flags & SP_OBJECT_WRITE_ALL) || this->lpe) {
+        repr->setAttributeOrRemoveIfEmpty("effect", Inkscape::LivePathEffect::LPETypeConverter.get_key(this->effecttype));
+
+        this->lpe->writeParamsToSVG();
+    }
+
+    SPObject::write(xml_doc, repr, flags);
+
+    return repr;
+}
+
+static void
+livepatheffect_on_repr_attr_changed ( Inkscape::XML::Node * /*repr*/,
+                                      const gchar *key,
+                                      const gchar */*oldval*/,
+                                      const gchar *newval,
+                                      bool /*is_interactive*/,
+                                      void * data )
+{
+#ifdef LIVEPATHEFFECT_VERBOSE
+    g_print("livepatheffect_on_repr_attr_changed");
+#endif
+
+    if (!data)
+        return;
+
+    LivePathEffectObject *lpeobj = (LivePathEffectObject*) data;
+    if (!lpeobj->get_lpe())
+        return;
+
+    lpeobj->get_lpe()->setParameter(key, newval);
+
+    lpeobj->requestModified(SP_OBJECT_MODIFIED_FLAG);
+}
+
+// Caution using this function, just compare id and same type of
+// effect, we use on clipboard to do not fork in same doc on pastepatheffect
+bool LivePathEffectObject::is_similar(LivePathEffectObject *that)
+{
+    if (that) {
+        const char *thisid = this->getId();
+        const char *thatid = that->getId();
+        if (!thisid || !thatid || strcmp(thisid, thatid) != 0) {
+            return false;
+        }
+        Inkscape::LivePathEffect::Effect *thislpe = this->get_lpe();
+        Inkscape::LivePathEffect::Effect *thatlpe = that->get_lpe();
+        if (thatlpe && thislpe && thislpe->getName() != thatlpe->getName()) {
+            return false;
+        }
+    }
+    return true;
+}
+
+/**
+ * If this has other users, create a new private duplicate and return it
+ * returns 'this' when no forking was necessary (and therefore no duplicate was made)
+ * Check out SPLPEItem::forkPathEffectsIfNecessary !
+ */
+LivePathEffectObject *LivePathEffectObject::fork_private_if_necessary(unsigned int nr_of_allowed_users)
+{
+    if (hrefcount > nr_of_allowed_users) {
+        SPDocument *doc = this->document;
+        Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+        Inkscape::XML::Node *dup_repr = this->getRepr()->duplicate(xml_doc);
+
+        doc->getDefs()->getRepr()->addChild(dup_repr, nullptr);
+        LivePathEffectObject *lpeobj_new = dynamic_cast<LivePathEffectObject *>(doc->getObjectByRepr(dup_repr));
+        Inkscape::GC::release(dup_repr);
+        // To regenerate ID
+        sp_object_ref(lpeobj_new, nullptr);
+        gchar *id = sp_object_get_unique_id(this, nullptr);
+        lpeobj_new->setAttribute("id", id);
+        g_free(id);
+        // Load all volatile vars of forked item
+        sp_object_unref(lpeobj_new, nullptr);
+        return lpeobj_new;
+    }
+    return this;
+}
+
+/*
+  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 :