/**
* Returns \c _curve_before_lpe if it is not NULL and a valid LPE is applied or
* \c curve if not.
*/
const SPCurve* SPPath::get_curve_reference () const
{
if (_curve_before_lpe && sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(this))) {
return _curve_before_lpe;
} else {
return _curve;
}
}
/**
* Return duplicate of edittable curve which is _curve_before_lpe if it exists or
* shape->curve if not.
*/
SPCurve* SPPath::get_curve_for_edit () const
{
if (_curve_before_lpe && sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(this))) {
return get_original_curve();
} else {
return getCurve();
}
}
bool SPLPEItem::hasPathEffectRecursive() const
{
if (parent && SP_IS_LPE_ITEM(parent)) {
return hasPathEffect() || SP_LPE_ITEM(parent)->hasPathEffectRecursive();
}
else {
return hasPathEffect();
}
}
void
sp_selected_path_reverse(SPDesktop *desktop)
{
Inkscape::Selection *selection = sp_desktop_selection(desktop);
GSList *items = (GSList *) selection->itemList();
if (!items) {
sp_desktop_message_stack(desktop)->flash(Inkscape::WARNING_MESSAGE, _("Select <b>path(s)</b> to reverse."));
return;
}
// set "busy" cursor
desktop->setWaitingCursor();
bool did = false;
desktop->messageStack()->flash(Inkscape::IMMEDIATE_MESSAGE, _("Reversing paths..."));
for (GSList *i = items; i != NULL; i = i->next) {
if (!SP_IS_PATH(i->data))
continue;
did = true;
SPPath *path = SP_PATH(i->data);
SPCurve *rcurve = sp_path_get_curve_reference(path)->create_reverse();
gchar *str = sp_svg_write_path(rcurve->get_pathvector());
if ( sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(path)) ) {
SP_OBJECT_REPR(path)->setAttribute("inkscape:original-d", str);
} else {
SP_OBJECT_REPR(path)->setAttribute("d", str);
}
g_free(str);
rcurve->unref();
// reverse nodetypes order (Bug #179866)
gchar *nodetypes = g_strdup(SP_OBJECT_REPR(path)->attribute("sodipodi:nodetypes"));
if ( nodetypes ) {
SP_OBJECT_REPR(path)->setAttribute("sodipodi:nodetypes", g_strreverse(nodetypes));
g_free(nodetypes);
}
}
desktop->clearWaitingCursor();
if (did) {
sp_document_done(sp_desktop_document(desktop), SP_VERB_SELECTION_REVERSE,
_("Reverse path"));
} else {
sp_desktop_message_stack(desktop)->flash(Inkscape::ERROR_MESSAGE, _("<b>No paths</b> to reverse in the selection."));
}
}
void SPLPEItem::remove_child(Inkscape::XML::Node * child) {
if (this->hasPathEffectRecursive()) {
SPObject *ochild = this->get_child_by_repr(child);
if ( ochild && SP_IS_LPE_ITEM(ochild) ) {
sp_lpe_item_cleanup_original_path_recursive(SP_LPE_ITEM(ochild));
}
}
SPItem::remove_child(child);
}
void SPLPEItem::child_added(Inkscape::XML::Node *child, Inkscape::XML::Node *ref) {
SPItem::child_added(child, ref);
if (this->hasPathEffectRecursive()) {
SPObject *ochild = this->get_child_by_repr(child);
if ( ochild && SP_IS_LPE_ITEM(ochild) ) {
sp_lpe_item_create_original_path_recursive(SP_LPE_ITEM(ochild));
}
}
}
/**
* Writes the given transform into the repr for the given item.
*/
static Geom::Affine
sp_path_set_transform(SPItem *item, Geom::Affine const &xform)
{
if (!SP_IS_PATH(item)) {
return Geom::identity();
}
SPPath *path = SP_PATH(item);
if (!path->_curve) { // 0 nodes, nothing to transform
return Geom::identity();
}
// Transform the original-d path if this is a valid LPE item, other else the (ordinary) path
if (path->_curve_before_lpe && sp_lpe_item_has_path_effect_recursive(SP_LPE_ITEM(item))) {
if (sp_lpe_item_has_path_effect_of_type(SP_LPE_ITEM(item), Inkscape::LivePathEffect::CLONE_ORIGINAL)) {
// if path has the CLONE_ORIGINAL LPE applied, don't write the transform to the pathdata, but write it 'unoptimized'
return xform;
} else {
path->_curve_before_lpe->transform(xform);
}
} else {
path->_curve->transform(xform);
}
// Adjust stroke
item->adjust_stroke(xform.descrim());
// Adjust pattern fill
item->adjust_pattern(xform);
// Adjust gradient fill
item->adjust_gradient(xform);
// Adjust LPE
item->adjust_livepatheffect(xform);
item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG);
// nothing remains - we've written all of the transform, so return identity
return Geom::identity();
}
void
LivePathEffectEditor::onSelectionChanged(Inkscape::Selection *sel)
{
if (lpe_list_locked) {
// this was triggered by selecting a row in the list, so skip reloading
lpe_list_locked = false;
return;
}
effectlist_store->clear();
current_lpeitem = NULL;
if ( sel && !sel->isEmpty() ) {
SPItem *item = sel->singleItem();
if ( item ) {
if ( SP_IS_LPE_ITEM(item) ) {
SPLPEItem *lpeitem = SP_LPE_ITEM(item);
effect_list_reload(lpeitem);
current_lpeitem = lpeitem;
set_sensitize_all(true);
if ( sp_lpe_item_has_path_effect(lpeitem) ) {
Inkscape::LivePathEffect::Effect *lpe = sp_lpe_item_get_current_lpe(lpeitem);
if (lpe) {
showParams(*lpe);
lpe_list_locked = true;
selectInList(lpe);
} else {
showText(_("Unknown effect is applied"));
}
} else {
showText(_("No effect applied"));
button_remove.set_sensitive(false);
}
} else {
showText(_("Item is not a path or shape"));
set_sensitize_all(false);
}
} else {
showText(_("Only one item can be selected"));
set_sensitize_all(false);
}
} else {
showText(_("Empty selection"));
set_sensitize_all(false);
}
}
static void
sp_path_update_patheffect(SPLPEItem *lpeitem, bool write)
{
SPShape * const shape = (SPShape *) lpeitem;
Inkscape::XML::Node *repr = shape->getRepr();
#ifdef PATH_VERBOSE
g_message("sp_path_update_patheffect");
#endif
if (shape->_curve_before_lpe && sp_lpe_item_has_path_effect_recursive(lpeitem)) {
SPCurve *curve = shape->_curve_before_lpe->copy();
/* if a path has an lpeitem applied, then reset the curve to the _curve_before_lpe.
* This is very important for LPEs to work properly! (the bbox might be recalculated depending on the curve in shape)*/
shape->setCurveInsync(curve, TRUE);
bool success = sp_lpe_item_perform_path_effect(SP_LPE_ITEM(shape), curve);
if (success && write) {
// could also do shape->getRepr()->updateRepr(); but only the d attribute needs updating.
#ifdef PATH_VERBOSE
g_message("sp_path_update_patheffect writes 'd' attribute");
#endif
if ( shape->_curve != NULL ) {
gchar *str = sp_svg_write_path(shape->_curve->get_pathvector());
repr->setAttribute("d", str);
g_free(str);
} else {
repr->setAttribute("d", NULL);
}
} else if (!success) {
// LPE was unsuccesfull. Read the old 'd'-attribute.
if (gchar const * value = repr->attribute("d")) {
Geom::PathVector pv = sp_svg_read_pathv(value);
SPCurve *oldcurve = new SPCurve(pv);
if (oldcurve) {
shape->setCurve(oldcurve, TRUE);
oldcurve->unref();
}
}
}
shape->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
curve->unref();
}
}
void
KnotHolderEntityEnd::bisector_end_set(Geom::Point const &p, guint state, bool left) {
LPEPerpBisector *lpe = dynamic_cast<LPEPerpBisector *>(_effect);
if (!lpe) return;
Geom::Point const s = snap_knot_position(p, state);
double lambda = Geom::nearest_point(s, lpe->M, lpe->perp_dir);
if (left) {
lpe->C = lpe->M + lpe->perp_dir * lambda;
lpe->length_left.param_set_value(lambda);
} else {
lpe->D = lpe->M + lpe->perp_dir * lambda;
lpe->length_right.param_set_value(-lambda);
}
// FIXME: this should not directly ask for updating the item. It should write to SVG, which triggers updating.
sp_lpe_item_update_patheffect (SP_LPE_ITEM(item), true, true);
}
virtual void knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, guint state) {
Geom::Point const s = p - param->origin;
/// @todo implement angle snapping when holding CTRL
param->setVector(s);
sp_lpe_item_update_patheffect(SP_LPE_ITEM(item), false, false);
};
virtual void knot_set(Geom::Point const &p, Geom::Point const &/*origin*/, guint /*state*/) {
Geom::Point const s = snap_knot_position(p);
param->setOrigin(s);
sp_lpe_item_update_patheffect(SP_LPE_ITEM(item), false, false);
};
bool
sp_item_list_to_curves(const GSList *items, GSList **selected, GSList **to_select, bool skip_all_lpeitems)
{
bool did = false;
for (;
items != NULL;
items = items->next) {
SPItem *item = SP_ITEM(items->data);
SPDocument *document = item->document;
if ( skip_all_lpeitems &&
SP_IS_LPE_ITEM(item) &&
!SP_IS_GROUP(item) ) // also convert objects in an SPGroup when skip_all_lpeitems is set.
{
continue;
}
if (SP_IS_PATH(item) && !SP_PATH(item)->original_curve) {
continue; // already a path, and no path effect
}
if (SP_IS_BOX3D(item)) {
// convert 3D box to ordinary group of paths; replace the old element in 'selected' with the new group
Inkscape::XML::Node *repr = SP_OBJECT_REPR(box3d_convert_to_group(SP_BOX3D(item)));
if (repr) {
*to_select = g_slist_prepend (*to_select, repr);
did = true;
*selected = g_slist_remove (*selected, item);
}
continue;
}
if (SP_IS_GROUP(item)) {
sp_lpe_item_remove_all_path_effects(SP_LPE_ITEM(item), true);
GSList *item_list = sp_item_group_item_list(SP_GROUP(item));
GSList *item_to_select = NULL;
GSList *item_selected = NULL;
if (sp_item_list_to_curves(item_list, &item_selected, &item_to_select))
did = true;
g_slist_free(item_list);
g_slist_free(item_to_select);
g_slist_free(item_selected);
continue;
}
Inkscape::XML::Node *repr = sp_selected_item_to_curved_repr(item, 0);
if (!repr)
continue;
did = true;
*selected = g_slist_remove (*selected, item);
// remember the position of the item
gint pos = SP_OBJECT_REPR(item)->position();
// remember parent
Inkscape::XML::Node *parent = SP_OBJECT_REPR(item)->parent();
// remember id
char const *id = SP_OBJECT_REPR(item)->attribute("id");
// remember title
gchar *title = item->title();
// remember description
gchar *desc = item->desc();
// It's going to resurrect, so we delete without notifying listeners.
SP_OBJECT(item)->deleteObject(false);
// restore id
repr->setAttribute("id", id);
// add the new repr to the parent
parent->appendChild(repr);
SPObject* newObj = document->getObjectByRepr(repr);
if (title && newObj) {
newObj->setTitle(title);
g_free(title);
}
if (desc && newObj) {
newObj->setDesc(desc);
g_free(desc);
}
// move to the saved position
repr->setPosition(pos > 0 ? pos : 0);
/* Buglet: We don't re-add the (new version of the) object to the selection of any other
* desktops where it was previously selected. */
*to_select = g_slist_prepend (*to_select, repr);
Inkscape::GC::release(repr);
}
return did;
}
