#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include <gtkmm.h>

#if WITH_GLIBMM_2_32

# include <glibmm/threads.h>

#endif

#include <glib.h>

#include <glibmm/i18n.h>

#include "display/curve.h"

#include <2geom/bezier-curve.h>

#include <2geom/point.h>

#include "helper/geom-curves.h"

#include "live_effects/lpe-bspline.h"

#include "live_effects/lpeobject.h"

#include "live_effects/parameter/parameter.h"

#include "ui/widget/scalar.h"

#include "xml/repr.h"

#include "svg/svg.h"

#include "sp-path.h"

#include "style.h"

#include "document-private.h"

#include "document.h"

#include "document-undo.h"

#include "verbs.h"

#include "sp-lpe-item.h"

#include "sp-namedview.h"

#include "display/sp-canvas.h"

#include <typeinfo>

#include <vector>

#include "util/units.h"

#include "message-stack.h"

#include "inkscape.h"

using Inkscape::DocumentUndo;

namespace Inkscape {

namespace LivePathEffect {

const double handleCubicGap = 0.01;

const double noPower = 0.0;

const double defaultStartPower = 0.3334;

const double defaultEndPower = 0.6667;

LPEBSpline::LPEBSpline(LivePathEffectObject *lpeobject)

: Effect(lpeobject),

// initialise your parameters here:

//testpointA(_("Test Point A"), _("Test A"), "ptA", &wr, this,

//Geom::Point(100,100)),

steps(_("Steps with CTRL:"), _("Change number of steps with CTRL pressed"), "steps", &wr, this, 2),

ignoreCusp(_("Ignore cusp nodes"), _("Change ignoring cusp nodes"), "ignoreCusp", &wr, this, true),

onlySelected(_("Change only selected nodes"), _("Change only selected nodes"), "onlySelected", &wr, this, false),

showHelper(_("Show helper paths"), _("Show helper paths"), "showHelper", &wr, this, false),

weight(_("Change weight:"), _("Change weight of the effect"), "weight", &wr, this, defaultStartPower)

{

registerParameter(dynamic_cast<Parameter *>(&weight));

registerParameter(dynamic_cast<Parameter *>(&steps));

registerParameter(dynamic_cast<Parameter *>(&ignoreCusp));

registerParameter(dynamic_cast<Parameter *>(&onlySelected));

registerParameter(dynamic_cast<Parameter *>(&showHelper));

weight.param_set_range(noPower, 1);

weight.param_set_increments(0.1, 0.1);

weight.param_set_digits(4);

steps.param_set_range(1, 10);

steps.param_set_increments(1, 1);

steps.param_set_digits(0);

}

LPEBSpline::~LPEBSpline() {}

void LPEBSpline::doBeforeEffect (SPLPEItem const* /*lpeitem*/)

{

if(!hp.empty()){

hp.clear();

}

}

void LPEBSpline::doOnApply(SPLPEItem const* lpeitem)

{

if (!SP_IS_SHAPE(lpeitem)) {

g_warning("LPE BSpline can only be applied to shapes (not groups).");

SPLPEItem * item = const_cast<SPLPEItem*>(lpeitem);

item->removeCurrentPathEffect(false);

}

}

void LPEBSpline::doEffect(SPCurve *curve)

{

if (curve->get_segment_count() < 1){

return;

}

// Make copy of old path as it is changed during processing

Geom::PathVector const original_pathv = curve->get_pathvector();

curve->reset();

double radiusHelperNodes = 6.0;

radiusHelperNodes /= current_zoom;

radiusHelperNodes = Inkscape::Util::Quantity::convert(radiusHelperNodes, "px", *defaultUnit);

for (Geom::PathVector::const_iterator path_it = original_pathv.begin();

path_it != original_pathv.end(); ++path_it) {

if (path_it->empty())

continue;

Geom::Path::const_iterator curve_it1 = path_it->begin();

Geom::Path::const_iterator curve_it2 = ++(path_it->begin());

Geom::Path::const_iterator curve_endit = path_it->end_default();

SPCurve *nCurve = new SPCurve();

Geom::Point previousNode(0, 0);

Geom::Point node(0, 0);

Geom::Point pointAt1(0, 0);

Geom::Point pointAt2(0, 0);

Geom::Point nextPointAt1(0, 0);

Geom::D2<Geom::SBasis> SBasisIn;

Geom::D2<Geom::SBasis> SBasisOut;

Geom::D2<Geom::SBasis> SBasisHelper;

Geom::CubicBezier const *cubic = NULL;

if (path_it->closed()) {

// if the path is closed, maybe we have to stop a bit earlier because the

// closing line segment has zerolength.

const Geom::Curve &closingline =

path_it->back_closed(); // the closing line segment is always of type

// Geom::LineSegment.

if (are_near(closingline.initialPoint(), closingline.finalPoint())) {

// closingline.isDegenerate() did not work, because it only checks for

// *exact* zero length, which goes wrong for relative coordinates and

// rounding errors...

// the closing line segment has zero-length. So stop before that one!

curve_endit = path_it->end_open();

}

}

nCurve->moveto(curve_it1->initialPoint());

while (curve_it1 != curve_endit) {

SPCurve *in = new SPCurve();

in->moveto(curve_it1->initialPoint());

in->lineto(curve_it1->finalPoint());

cubic = dynamic_cast<Geom::CubicBezier const *>(&*curve_it1);

if (cubic) {

SBasisIn = in->first_segment()->toSBasis();

if(are_near((*cubic)[1],(*cubic)[0]) && !are_near((*cubic)[2],(*cubic)[3])) {

pointAt1 = SBasisIn.valueAt(defaultStartPower);

} else {

pointAt1 = SBasisIn.valueAt(Geom::nearest_point((*cubic)[1], *in->first_segment()));

}

if(are_near((*cubic)[2],(*cubic)[3]) && !are_near((*cubic)[1],(*cubic)[0])) {

pointAt2 = SBasisIn.valueAt(defaultEndPower);

} else {

pointAt2 = SBasisIn.valueAt(Geom::nearest_point((*cubic)[2], *in->first_segment()));

}

} else {

pointAt1 = in->first_segment()->initialPoint();

pointAt2 = in->first_segment()->finalPoint();

}

in->reset();

delete in;

if ( curve_it2 != curve_endit ) {

SPCurve *out = new SPCurve();

out->moveto(curve_it2->initialPoint());

out->lineto(curve_it2->finalPoint());

cubic = dynamic_cast<Geom::CubicBezier const *>(&*curve_it2);

if (cubic) {

SBasisOut = out->first_segment()->toSBasis();

if(are_near((*cubic)[1],(*cubic)[0]) && !are_near((*cubic)[2],(*cubic)[3])) {

nextPointAt1 = SBasisIn.valueAt(defaultStartPower);

} else {

nextPointAt1 = SBasisOut.valueAt(Geom::nearest_point((*cubic)[1], *out->first_segment()));

}

} else {

nextPointAt1 = out->first_segment()->initialPoint();

}

out->reset();

delete out;

}

if (path_it->closed() && curve_it2 == curve_endit) {

SPCurve *start = new SPCurve();

start->moveto(path_it->begin()->initialPoint());

start->lineto(path_it->begin()->finalPoint());

Geom::D2<Geom::SBasis> SBasisStart = start->first_segment()->toSBasis();

SPCurve *lineHelper = new SPCurve();

cubic = dynamic_cast<Geom::CubicBezier const *>(&*path_it->begin());

if (cubic) {

lineHelper->moveto(SBasisStart.valueAt(

Geom::nearest_point((*cubic)[1], *start->first_segment())));

} else {

lineHelper->moveto(start->first_segment()->initialPoint());

}

start->reset();

delete start;

SPCurve *end = new SPCurve();

end->moveto(curve_it1->initialPoint());

end->lineto(curve_it1->finalPoint());

Geom::D2<Geom::SBasis> SBasisEnd = end->first_segment()->toSBasis();

cubic = dynamic_cast<Geom::CubicBezier const *>(&*curve_it1);

if (cubic) {

lineHelper->lineto(SBasisEnd.valueAt(

Geom::nearest_point((*cubic)[2], *end->first_segment())));

} else {

lineHelper->lineto(end->first_segment()->finalPoint());

}

end->reset();

delete end;

SBasisHelper = lineHelper->first_segment()->toSBasis();

lineHelper->reset();

delete lineHelper;

node = SBasisHelper.valueAt(0.5);

nCurve->curveto(pointAt1, pointAt2, node);

nCurve->move_endpoints(node, node);

} else if ( curve_it2 == curve_endit) {

nCurve->curveto(pointAt1, pointAt2, curve_it1->finalPoint());

nCurve->move_endpoints(path_it->begin()->initialPoint(), curve_it1->finalPoint());

} else {

SPCurve *lineHelper = new SPCurve();

lineHelper->moveto(pointAt2);

lineHelper->lineto(nextPointAt1);

SBasisHelper = lineHelper->first_segment()->toSBasis();

lineHelper->reset();

delete lineHelper;

previousNode = node;

node = SBasisHelper.valueAt(0.5);

Geom::CubicBezier const *cubic2 = dynamic_cast<Geom::CubicBezier const *>(&*curve_it1);

if((cubic && are_near((*cubic)[0],(*cubic)[1])) || (cubic2 && are_near((*cubic2)[2],(*cubic2)[3]))) {

node = curve_it1->finalPoint();

}

nCurve->curveto(pointAt1, pointAt2, node);

}

if(!are_near(node,curve_it1->finalPoint()) && showHelper){

drawHandle(node, radiusHelperNodes);

}

++curve_it1;

++curve_it2;

}

//y cerramos la curva

if (path_it->closed()) {

nCurve->closepath_current();

}

curve->append(nCurve, false);

nCurve->reset();

delete nCurve;

}

if(showHelper){

Geom::PathVector const pathv = curve->get_pathvector();

hp.push_back(pathv[0]);

}

}

LPEBSpline::drawHandle(Geom::Point p, double radiusHelperNodes)

{

char const * svgd = "M 1,0.5 A 0.5,0.5 0 0 1 0.5,1 0.5,0.5 0 0 1 0,0.5 0.5,0.5 0 0 1 0.5,0 0.5,0.5 0 0 1 1,0.5 Z";

Geom::PathVector pathv = sp_svg_read_pathv(svgd);

Geom::Affine aff = Geom::Affine();

aff *= Geom::Scale(radiusHelperNodes);

pathv *= aff;

pathv += p - Geom::Point(0.5*radiusHelperNodes, 0.5*radiusHelperNodes);

hp.push_back(pathv[0]);

}

LPEBSpline::addCanvasIndicators(SPLPEItem const */*lpeitem*/, std::vector<Geom::PathVector> &hp_vec)

{

hp_vec.push_back(hp);

}

Gtk::Widget *LPEBSpline::newWidget()

{

// use manage here, because after deletion of Effect object, others might

// still be pointing to this widget.

Gtk::VBox *vbox = Gtk::manage(new Gtk::VBox(Effect::newWidget()));

vbox->set_border_width(5);

std::vector<Parameter *>::iterator it = param_vector.begin();

while (it != param_vector.end()) {

if ((*it)->widget_is_visible) {

Parameter *param = *it;

Gtk::Widget *widg = dynamic_cast<Gtk::Widget *>(param->param_newWidget());

if (param->param_key == "weight") {

Gtk::HBox * buttons = Gtk::manage(new Gtk::HBox(true,0));

Gtk::Button *defaultWeight =

Gtk::manage(new Gtk::Button(Glib::ustring(_("Default weight"))));

defaultWeight->signal_clicked()

.connect(sigc::mem_fun(*this, &LPEBSpline::toDefaultWeight));

buttons->pack_start(*defaultWeight, true, true, 2);

Gtk::Button *makeCusp =

Gtk::manage(new Gtk::Button(Glib::ustring(_("Make cusp"))));

makeCusp->signal_clicked()

.connect(sigc::mem_fun(*this, &LPEBSpline::toMakeCusp));

buttons->pack_start(*makeCusp, true, true, 2);

vbox->pack_start(*buttons, true, true, 2);

}

if (param->param_key == "weight" || param->param_key == "steps") {

Inkscape::UI::Widget::Scalar *widgRegistered =

Gtk::manage(dynamic_cast<Inkscape::UI::Widget::Scalar *>(widg));

widgRegistered->signal_value_changed()

.connect(sigc::mem_fun(*this, &LPEBSpline::toWeight));

widg = dynamic_cast<Gtk::Widget *>(widgRegistered);

if (widg) {

Gtk::HBox * scalarParameter = dynamic_cast<Gtk::HBox *>(widg);

std::vector< Gtk::Widget* > childList = scalarParameter->get_children();

Gtk::Entry* entryWidg = dynamic_cast<Gtk::Entry *>(childList[1]);

entryWidg->set_width_chars(6);

}

}

if (param->param_key == "onlySelected") {

Gtk::CheckButton *widgRegistered =

Gtk::manage(dynamic_cast<Gtk::CheckButton *>(widg));

widg = dynamic_cast<Gtk::Widget *>(widgRegistered);

}

if (param->param_key == "ignoreCusp") {

Gtk::CheckButton *widgRegistered =

Gtk::manage(dynamic_cast<Gtk::CheckButton *>(widg));

widg = dynamic_cast<Gtk::Widget *>(widgRegistered);

}

Glib::ustring *tip = param->param_getTooltip();

if (widg) {

vbox->pack_start(*widg, true, true, 2);

if (tip) {

widg->set_tooltip_text(*tip);

} else {

widg->set_tooltip_text("");

widg->set_has_tooltip(false);

}

}

}

++it;

}

return dynamic_cast<Gtk::Widget *>(vbox);

}

void LPEBSpline::toDefaultWeight()

{

changeWeight(defaultStartPower);

}

void LPEBSpline::toMakeCusp()

{

changeWeight(noPower);

}

void LPEBSpline::toWeight()

{

changeWeight(weight);

}

void LPEBSpline::changeWeight(double weightValue)

{

SPPath *path = dynamic_cast<SPPath *>(sp_lpe_item);

if(path){

SPCurve *curve = path->get_curve_for_edit();

LPEBSpline::doBSplineFromWidget(curve, weightValue);

gchar *str = sp_svg_write_path(curve->get_pathvector());

path->getRepr()->setAttribute("inkscape:original-d", str);

}

}

void LPEBSpline::doBSplineFromWidget(SPCurve *curve, double weightValue)

{

using Geom::X;

using Geom::Y;

if (curve->get_segment_count() < 1)

return;

// Make copy of old path as it is changed during processing

Geom::PathVector const original_pathv = curve->get_pathvector();

curve->reset();

for (Geom::PathVector::const_iterator path_it = original_pathv.begin();

path_it != original_pathv.end(); ++path_it) {

if (path_it->empty()){

continue;

}

Geom::Path::const_iterator curve_it1 = path_it->begin();

Geom::Path::const_iterator curve_it2 = ++(path_it->begin());

Geom::Path::const_iterator curve_endit = path_it->end_default();

SPCurve *nCurve = new SPCurve();

Geom::Point pointAt0(0, 0);

Geom::Point pointAt1(0, 0);

Geom::Point pointAt2(0, 0);

Geom::Point pointAt3(0, 0);

Geom::D2<Geom::SBasis> SBasisIn;

Geom::D2<Geom::SBasis> SBasisOut;

Geom::CubicBezier const *cubic = NULL;

if (path_it->closed()) {

// if the path is closed, maybe we have to stop a bit earlier because the

// closing line segment has zerolength.

const Geom::Curve &closingline =

path_it->back_closed(); // the closing line segment is always of type

// Geom::LineSegment.

if (are_near(closingline.initialPoint(), closingline.finalPoint())) {

// closingline.isDegenerate() did not work, because it only checks for

// *exact* zero length, which goes wrong for relative coordinates and

// rounding errors...

// the closing line segment has zero-length. So stop before that one!

curve_endit = path_it->end_open();

}

}

nCurve->moveto(curve_it1->initialPoint());

while (curve_it1 != curve_endit) {

SPCurve *in = new SPCurve();

in->moveto(curve_it1->initialPoint());

in->lineto(curve_it1->finalPoint());

cubic = dynamic_cast<Geom::CubicBezier const *>(&*curve_it1);

pointAt0 = in->first_segment()->initialPoint();

pointAt3 = in->first_segment()->finalPoint();

SBasisIn = in->first_segment()->toSBasis();

if (!onlySelected) {

if (cubic) {

if (!ignoreCusp || !Geom::are_near((*cubic)[1], pointAt0)) {

pointAt1 = SBasisIn.valueAt(weightValue);

if (weightValue != noPower) {

pointAt1 =

Geom::Point(pointAt1[X] + handleCubicGap, pointAt1[Y] + handleCubicGap);

}

} else {

pointAt1 = in->first_segment()->initialPoint();

}

if (!ignoreCusp || !Geom::are_near((*cubic)[2], pointAt3)) {

pointAt2 = SBasisIn.valueAt(1 - weightValue);

if (weightValue != noPower) {

pointAt2 =

Geom::Point(pointAt2[X] + handleCubicGap, pointAt2[Y] + handleCubicGap);

}

} else {

pointAt2 = in->first_segment()->finalPoint();

}

} else {

if (!ignoreCusp && weightValue != noPower) {

pointAt1 = SBasisIn.valueAt(weightValue);

if (weightValue != noPower) {

pointAt1 =

Geom::Point(pointAt1[X] + handleCubicGap, pointAt1[Y] + handleCubicGap);

}

pointAt2 = SBasisIn.valueAt(1 - weightValue);

if (weightValue != noPower) {

pointAt2 =

Geom::Point(pointAt2[X] + handleCubicGap, pointAt2[Y] + handleCubicGap);

}

} else {

pointAt1 = in->first_segment()->initialPoint();

pointAt2 = in->first_segment()->finalPoint();

}

}

} else {

if (cubic) {

if (!ignoreCusp || !Geom::are_near((*cubic)[1], pointAt0)) {

if (isNodePointSelected(pointAt0)) {

pointAt1 = SBasisIn.valueAt(weightValue);

if (weightValue != noPower) {

pointAt1 =

Geom::Point(pointAt1[X] + handleCubicGap, pointAt1[Y] + handleCubicGap);

}

} else {

pointAt1 = (*cubic)[1];

}

} else {

pointAt1 = in->first_segment()->initialPoint();

}

if (!ignoreCusp || !Geom::are_near((*cubic)[2], pointAt3)) {

if (isNodePointSelected(pointAt3)) {

pointAt2 = SBasisIn.valueAt(1 - weightValue);

if (weightValue != noPower) {

pointAt2 =

Geom::Point(pointAt2[X] + handleCubicGap, pointAt2[Y] + handleCubicGap);

}

} else {

pointAt2 = (*cubic)[2];

}

} else {

pointAt2 = in->first_segment()->finalPoint();

}

} else {

if (!ignoreCusp && weightValue != noPower) {

if (isNodePointSelected(pointAt0)) {

pointAt1 = SBasisIn.valueAt(weightValue);

pointAt1 =

Geom::Point(pointAt1[X] + handleCubicGap, pointAt1[Y] + handleCubicGap);

} else {

pointAt1 = in->first_segment()->initialPoint();

}

if (isNodePointSelected(pointAt3)) {

pointAt2 = SBasisIn.valueAt(weightValue);

pointAt2 =

Geom::Point(pointAt2[X] + handleCubicGap, pointAt2[Y] + handleCubicGap);

} else {

pointAt2 = in->first_segment()->finalPoint();

}

} else {

pointAt1 = in->first_segment()->initialPoint();

pointAt2 = in->first_segment()->finalPoint();

}

}

}

in->reset();

delete in;

nCurve->curveto(pointAt1, pointAt2, pointAt3);

++curve_it1;

++curve_it2;

}

if (path_it->closed()) {

nCurve->move_endpoints(path_it->begin()->initialPoint(),

path_it->begin()->initialPoint());

} else {

nCurve->move_endpoints(path_it->begin()->initialPoint(), pointAt3);

}

if (path_it->closed()) {

nCurve->closepath_current();

}

curve->append(nCurve, false);

nCurve->reset();

delete nCurve;

}

}

}; //namespace LivePathEffect

}; /* namespace Inkscape */