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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* The reference corresponding to the inkscape:perspectiveID attribute
*
* Copyright (C) 2007 Johan Engelen
* Copyright (C) 2007 Maximilian Albert
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "persp3d-reference.h"
#include "uri.h"
static void persp3dreference_href_changed(SPObject *old_ref, SPObject *ref, Persp3DReference *persp3dref);
static void persp3dreference_delete_self(SPObject *deleted, Persp3DReference *persp3dref);
static void persp3dreference_source_modified(SPObject *iSource, guint flags, Persp3DReference *persp3dref);
Persp3DReference::Persp3DReference(SPObject* i_owner) : URIReference(i_owner)
{
owner=i_owner;
persp_href = nullptr;
persp_repr = nullptr;
persp = nullptr;
_changed_connection = changedSignal().connect(sigc::bind(sigc::ptr_fun(persp3dreference_href_changed), this)); // listening to myself, this should be virtual instead
}
Persp3DReference::~Persp3DReference()
{
_changed_connection.disconnect(); // to do before unlinking
quit_listening();
unlink();
}
bool
Persp3DReference::_acceptObject(SPObject *obj) const
{
return SP_IS_PERSP3D(obj) && URIReference::_acceptObject(obj);
;
/* effic: Don't bother making this an inline function: _acceptObject is a virtual function,
typically called from a context where the runtime type is not known at compile time. */
}
void
Persp3DReference::unlink()
{
g_free(persp_href);
persp_href = nullptr;
detach();
}
void
Persp3DReference::start_listening(Persp3D* to)
{
if ( to == nullptr ) {
return;
}
persp = to;
persp_repr = to->getRepr();
_delete_connection = to->connectDelete(sigc::bind(sigc::ptr_fun(&persp3dreference_delete_self), this));
_modified_connection = to->connectModified(sigc::bind<2>(sigc::ptr_fun(&persp3dreference_source_modified), this));
}
void
Persp3DReference::quit_listening()
{
if ( persp == nullptr ) {
return;
}
_modified_connection.disconnect();
_delete_connection.disconnect();
persp_repr = nullptr;
persp = nullptr;
}
static void
persp3dreference_href_changed(SPObject */*old_ref*/, SPObject */*ref*/, Persp3DReference *persp3dref)
{
persp3dref->quit_listening();
Persp3D *refobj = SP_PERSP3D(persp3dref->getObject());
if ( refobj ) {
persp3dref->start_listening(refobj);
}
persp3dref->owner->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
static void
persp3dreference_delete_self(SPObject */*deleted*/, Persp3DReference *persp3dref)
{
g_return_if_fail(persp3dref->owner);
persp3dref->owner->deleteObject();
}
static void
persp3dreference_source_modified(SPObject */*iSource*/, guint /*flags*/, Persp3DReference *persp3dref)
{
persp3dref->owner->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
/*
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:fileencoding=utf-8:textwidth=99 :
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