#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <string.h>

#include <glibmm/i18n.h>

#include "sp-object.h"

#include "sp-item.h"

#include "sp-lpe-item.h"

#include "live_effects/lpeobject.h"

#include "selection.h"

#include "desktop.h"

#include "document.h"

#include "desktop-handles.h"

#include "knotholder.h"

#include "live_effects/parameter/point.h"

#include "xml/node-event-vector.h"

#include "preferences.h"

#include "object-edit.h"

#include "style.h"

#include "display/curve.h"

#include <2geom/pathvector.h>

#include "shape-editor.h"

using Inkscape::createKnotHolder;

ShapeEditor::ShapeEditor(SPDesktop *dt) {

this->desktop = dt;

this->knotholder = NULL;

this->knotholder_listener_attached_for = NULL;

}

ShapeEditor::~ShapeEditor() {

unset_item(SH_KNOTHOLDER);

}

void ShapeEditor::unset_item(SubType type, bool keep_knotholder) {

switch (type) {

case SH_NODEPATH:

// defunct

break;

case SH_KNOTHOLDER:

if (this->knotholder) {

Inkscape::XML::Node *old_repr = this->knotholder->repr;

if (old_repr && old_repr == knotholder_listener_attached_for) {

sp_repr_remove_listener_by_data(old_repr, this);

Inkscape::GC::release(old_repr);

knotholder_listener_attached_for = NULL;

}

if (!keep_knotholder) {

delete this->knotholder;

this->knotholder = NULL;

}

}

break;

}

}

bool ShapeEditor::has_nodepath () {

return false;

}

bool ShapeEditor::has_knotholder () {

return (this->knotholder != NULL);

}

void ShapeEditor::update_knotholder () {

if (this->knotholder)

this->knotholder->update_knots();

}

bool ShapeEditor::has_local_change (SubType type) {

switch (type) {

case SH_NODEPATH:

// defunct

return false;

case SH_KNOTHOLDER:

return (this->knotholder && this->knotholder->local_change != 0);

default:

g_assert_not_reached();

}

}

void ShapeEditor::decrement_local_change (SubType type) {

switch (type) {

case SH_NODEPATH:

// defunct

break;

case SH_KNOTHOLDER:

if (this->knotholder) {

this->knotholder->local_change = FALSE;

}

break;

default:

g_assert_not_reached();

}

}

const SPItem *ShapeEditor::get_item (SubType type) {

const SPItem *item = NULL;

switch (type) {

case SH_NODEPATH:

// defunct

break;

case SH_KNOTHOLDER:

if (this->has_knotholder()) {

item = this->knotholder->getItem();

}

break;

}

return item;

}

GList *ShapeEditor::save_nodepath_selection () {

// defunct stub

return NULL;

}

void ShapeEditor::restore_nodepath_selection (GList */*saved*/) {

// defunct stub

}

void ShapeEditor::shapeeditor_event_attr_changed(gchar const *name)

{

gboolean changed_kh = FALSE;

if (has_knotholder())

{

changed_kh = !has_local_change(SH_KNOTHOLDER);

decrement_local_change(SH_KNOTHOLDER);

if (changed_kh) {

// this can happen if an LPEItem's knotholder handle was dragged, in which case we want

// to keep the knotholder; in all other cases (e.g., if the LPE itself changes) we delete it

reset_item(SH_KNOTHOLDER, !strcmp(name, "d"));

}

}

}

static void shapeeditor_event_attr_changed(Inkscape::XML::Node */*repr*/, gchar const *name,

gchar const */*old_value*/, gchar const */*new_value*/,

bool /*is_interactive*/, gpointer data)

{

g_assert(data);

ShapeEditor *sh = static_cast<ShapeEditor *>(data);

sh->shapeeditor_event_attr_changed(name);

}

static Inkscape::XML::NodeEventVector shapeeditor_repr_events = {

NULL, /* child_added */

NULL, /* child_removed */

shapeeditor_event_attr_changed,

NULL, /* content_changed */

NULL /* order_changed */

};

void ShapeEditor::set_item(SPItem *item, SubType type, bool keep_knotholder) {

// this happens (and should only happen) when for an LPEItem having both knotholder and

// nodepath the knotholder is adapted; in this case we don't want to delete the knotholder

// since this freezes the handles

unset_item(type, keep_knotholder);

if (item) {

Inkscape::XML::Node *repr;

switch(type) {

case SH_NODEPATH:

// defunct

break;

case SH_KNOTHOLDER:

if (!this->knotholder) {

// only recreate knotholder if none is present

this->knotholder = createKnotHolder(item, desktop);

}

if (this->knotholder) {

this->knotholder->update_knots();

// setting new listener

repr = this->knotholder->repr;

if (repr != knotholder_listener_attached_for) {

Inkscape::GC::anchor(repr);

sp_repr_add_listener(repr, &shapeeditor_repr_events, this);

knotholder_listener_attached_for = repr;

}

}

break;

}

}

}

void ShapeEditor::reset_item (SubType type, bool keep_knotholder)

{

switch (type) {

case SH_NODEPATH:

// defunct

break;

case SH_KNOTHOLDER:

if ( knotholder ) {

SPObject *obj = sp_desktop_document(desktop)->getObjectByRepr(knotholder_listener_attached_for); /// note that it is not certain that this is an SPItem; it could be a LivePathEffectObject.

set_item(SP_ITEM(obj), SH_KNOTHOLDER, keep_knotholder);

}

break;

}

}

void ShapeEditor::nodepath_destroyed () {

}

bool ShapeEditor::has_selection() {

return false; // so far, knotholder cannot have selection

}

bool ShapeEditor::knot_mouseover()

{

if (this->knotholder) {

return knotholder->knot_mouseover();

}

return false;

}