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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* The reference corresponding to href of <use> element.
*
* Copyright (C) 2004 Bulia Byak
* Copyright (C) 2004 Monash University
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "sp-use-reference.h"
#include <cstring>
#include <string>
#include "bad-uri-exception.h"
#include "enums.h"
#include "display/curve.h"
#include "livarot/Path.h"
#include "preferences.h"
#include "sp-shape.h"
#include "sp-text.h"
#include "uri.h"
bool SPUseReference::_acceptObject(SPObject * const obj) const
{
return URIReference::_acceptObject(obj);
}
static void sp_usepath_href_changed(SPObject *old_ref, SPObject *ref, SPUsePath *offset);
static void sp_usepath_move_compensate(Geom::Affine const *mp, SPItem *original, SPUsePath *self);
static void sp_usepath_delete_self(SPObject *deleted, SPUsePath *offset);
static void sp_usepath_source_modified(SPObject *iSource, guint flags, SPUsePath *offset);
SPUsePath::SPUsePath(SPObject* i_owner): SPUseReference(i_owner)
, owner(i_owner)
{
_changed_connection = changedSignal().connect(sigc::bind(sigc::ptr_fun(sp_usepath_href_changed), this)); // listening to myself, this should be virtual instead
user_unlink = nullptr;
}
SPUsePath::~SPUsePath()
{
_changed_connection.disconnect(); // to do before unlinking
quit_listening();
unlink();
}
void
SPUsePath::link(char *to)
{
if ( to == nullptr ) {
quit_listening();
unlink();
} else {
if ( !sourceHref || ( strcmp(to, sourceHref) != 0 ) ) {
g_free(sourceHref);
sourceHref = g_strdup(to);
try {
attach(Inkscape::URI(to));
} catch (Inkscape::BadURIException &e) {
/* TODO: Proper error handling as per
* http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing.
*/
g_warning("%s", e.what());
detach();
}
}
}
}
void
SPUsePath::unlink()
{
g_free(sourceHref);
sourceHref = nullptr;
detach();
}
void
SPUsePath::start_listening(SPObject* to)
{
if ( to == nullptr ) {
return;
}
sourceObject = to;
sourceRepr = to->getRepr();
_delete_connection = to->connectDelete(sigc::bind(sigc::ptr_fun(&sp_usepath_delete_self), this));
_transformed_connection = SP_ITEM(to)->connectTransformed(sigc::bind(sigc::ptr_fun(&sp_usepath_move_compensate), this));
_modified_connection = to->connectModified(sigc::bind<2>(sigc::ptr_fun(&sp_usepath_source_modified), this));
}
void
SPUsePath::quit_listening()
{
if ( sourceObject == nullptr ) {
return;
}
_modified_connection.disconnect();
_delete_connection.disconnect();
_transformed_connection.disconnect();
sourceRepr = nullptr;
sourceObject = nullptr;
}
static void
sp_usepath_href_changed(SPObject */*old_ref*/, SPObject */*ref*/, SPUsePath *offset)
{
offset->quit_listening();
SPItem *refobj = offset->getObject();
if ( refobj ) {
offset->start_listening(refobj);
}
offset->sourceDirty=true;
offset->owner->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
static void
sp_usepath_move_compensate(Geom::Affine const *mp, SPItem *original, SPUsePath *self)
{
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
guint mode = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_PARALLEL);
if (mode == SP_CLONE_COMPENSATION_NONE) {
return;
}
SPItem *item = SP_ITEM(self->owner);
// TODO kill naughty naughty #if 0
#if 0
Geom::Affine m(*mp);
if (!(m.is_translation())) {
return;
}
Geom::Affine const t(item->transform);
Geom::Affine clone_move = t.inverse() * m * t;
// Calculate the compensation matrix and the advertized movement matrix.
Geom::Affine advertized_move;
if (mode == SP_CLONE_COMPENSATION_PARALLEL) {
//clone_move = clone_move.inverse();
advertized_move.set_identity();
} else if (mode == SP_CLONE_COMPENSATION_UNMOVED) {
clone_move = clone_move.inverse() * m;
advertized_move = m;
} else {
g_assert_not_reached();
}
// Commit the compensation.
item->transform *= clone_move;
sp_item_write_transform(item, item->getRepr(), item->transform, &advertized_move);
#else
(void)mp;
(void)original;
#endif
self->sourceDirty = true;
item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
static void
sp_usepath_delete_self(SPObject */*deleted*/, SPUsePath *offset)
{
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
guint const mode = prefs->getInt("/options/cloneorphans/value", SP_CLONE_ORPHANS_UNLINK);
if (mode == SP_CLONE_ORPHANS_UNLINK) {
// leave it be. just forget about the source
offset->quit_listening();
offset->unlink();
if (offset->user_unlink)
offset->user_unlink(offset->owner);
} else if (mode == SP_CLONE_ORPHANS_DELETE) {
offset->owner->deleteObject();
}
}
static void
sp_usepath_source_modified(SPObject */*iSource*/, guint /*flags*/, SPUsePath *offset)
{
offset->sourceDirty = true;
offset->owner->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
void SPUsePath::refresh_source()
{
sourceDirty = false;
originalPath = nullptr;
SPObject *refobj = sourceObject;
if ( refobj == nullptr ) return;
if (auto shape = dynamic_cast<SPShape const *>(refobj)) {
originalPath = SPCurve::copy(shape->curve());
if (originalPath == nullptr) {
sourceDirty = true;
}
} else if (auto text = dynamic_cast<SPText const *>(refobj)) {
originalPath = text->getNormalizedBpath();
}
}
/*
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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