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// 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 :
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