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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/

/***************************************************************************
*   Copyright (C) 2011 by Franz Schmid                                     *
*   franz.schmid@altmuehlnet.de                                            *
*                                                                          *
*   This program is free software; you can redistribute it and/or modify   *
*   it under the terms of the GNU General Public License as published by   *
*   the Free Software Foundation; either version 2 of the License, or      *
*   (at your option) any later version.                                    *
*                                                                          *
*   This program is distributed in the hope that it will be useful,        *
*   but WITHOUT ANY WARRANTY; without even the implied warranty of         *
*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
*   GNU General Public License for more details.                           *
*                                                                          *
*   You should have received a copy of the GNU General Public License      *
*   along with this program; if not, write to the                          *
*   Free Software Foundation, Inc.,                                        *
*   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.              *
****************************************************************************/


#if defined(_MSC_VER) && !defined(_USE_MATH_DEFINES)
#define _USE_MATH_DEFINES
#endif
#include <cmath>
#include "smoothpath.h"
#include "scribuscore.h"
#include "scribusdoc.h"
#include "scribusstructs.h"
#include "selection.h"
#include "util.h"
#include <QPainterPath>
#include <QPolygonF>
#include <QList>
#include "KarbonCurveFit.h"

int smoothpath_getPluginAPIVersion()
{
        return PLUGIN_API_VERSION;
}

ScPlugin* smoothpath_getPlugin()
{
        SmoothPathPlugin* plug = new SmoothPathPlugin();
        Q_CHECK_PTR(plug);
        return plug;
}

void smoothpath_freePlugin(ScPlugin* plugin)
{
        SmoothPathPlugin* plug = dynamic_cast<SmoothPathPlugin*>(plugin);
        Q_ASSERT(plug);
        delete plug;
}

SmoothPathPlugin::SmoothPathPlugin() : ScActionPlugin()
{
        // Set action info in languageChange, so we only have to do
        // it in one place.
        languageChange();
}

SmoothPathPlugin::~SmoothPathPlugin() {};

void SmoothPathPlugin::languageChange()
{
        // Note that we leave the unused members unset. They'll be initialised
        // with their default ctors during construction.
        // Action name
        m_actionInfo.name = "SmoothPath";
        // Action text for menu, including accel
        m_actionInfo.text = tr("Smooth Path");
        // Menu
        m_actionInfo.menu = "ItemPathOps";
        m_actionInfo.parentMenu = "Item";
        m_actionInfo.subMenuName = tr("Path Tools");
        m_actionInfo.enabledOnStartup = false;
        m_actionInfo.notSuitableFor.append(PageItem::Line);
        m_actionInfo.notSuitableFor.append(PageItem::TextFrame);
        m_actionInfo.notSuitableFor.append(PageItem::ImageFrame);
        m_actionInfo.notSuitableFor.append(PageItem::Polygon);
        m_actionInfo.notSuitableFor.append(PageItem::PathText);
        m_actionInfo.notSuitableFor.append(PageItem::LatexFrame);
        m_actionInfo.notSuitableFor.append(PageItem::Symbol);
        m_actionInfo.notSuitableFor.append(PageItem::RegularPolygon);
        m_actionInfo.notSuitableFor.append(PageItem::Arc);
        m_actionInfo.notSuitableFor.append(PageItem::Spiral);
        m_actionInfo.forAppMode.append(modeNormal);
        m_actionInfo.needsNumObjects = 1;
}

const QString SmoothPathPlugin::fullTrName() const
{
        return QObject::tr("SmoothPath");
}

const ScActionPlugin::AboutData* SmoothPathPlugin::getAboutData() const
{
        AboutData* about = new AboutData;
        Q_CHECK_PTR(about);
        about->authors = QString::fromUtf8("Franz Schmid <Franz.Schmid@altmuehlnet.de>");
        about->shortDescription = tr("Smoothes a Path");
        about->description = tr("Converts a Polyline made of straight Lines to a smoothed Bezier Curve.");
        // about->version
        // about->releaseDate
        // about->copyright
        about->license = "GPL";
        return about;
}

void SmoothPathPlugin::deleteAboutData(const AboutData* about) const
{
        Q_ASSERT(about);
        delete about;
}

bool SmoothPathPlugin::run(ScribusDoc* doc, QString)
{
        ScribusDoc* currDoc = doc;
        if (currDoc == 0)
                currDoc = ScCore->primaryMainWindow()->doc;
        if (currDoc->m_Selection->count() > 0)
        {
                PageItem *currItem = currDoc->m_Selection->itemAt(0);
                QPainterPath pp;
                if (currItem->itemType() == PageItem::PolyLine)
                        pp = currItem->PoLine.toQPainterPath(false);
                else
                        pp = currItem->PoLine.toQPainterPath(true);
                QList<QPolygonF> polyList = pp.toSubpathPolygons();
                QPainterPath result;
                for (int a = 0; a < polyList.count(); a++)
                {
                        result.addPath(bezierFit(polyList[a], 5.0));
                }
                currItem->PoLine.fromQPainterPath(result);
                currItem->ClipEdited = true;
                currItem->FrameType = 3;
                currDoc->AdjustItemSize(currItem);
                currItem->OldB2 = currItem->width();
                currItem->OldH2 = currItem->height();
                currItem->updateClip();
                currDoc->regionsChanged()->update(QRectF());
                currDoc->changed();
        }
        return true;
}