/***************************************************************************
 *   Copyright (c) 2013 Luke Parry <l.parry@warwick.ac.uk>                 *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 of the License, or (at your option) any later version.      *
 *                                                                         *
 *   This library  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 Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/

#include "PreCompiled.h"

#ifndef _PreComp_
# include <sstream>
# include <cstring>
# include <cstdlib>
# include <exception>
# include <QString>
# include <QStringList>
# include <QRegExp>
#include <BRepBuilderAPI_MakeVertex.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <BRepExtrema_DistShapeShape.hxx>
#include <gp_Pnt.hxx>
#include <TopoDS_Shape.hxx>
#include <TopoDS_Edge.hxx>
#endif

#include <QLocale>

#include <App/Application.h>
#include <Base/Console.h>
#include <Base/Exception.h>
#include <Base/Parameter.h>
#include <Base/Quantity.h>
#include <Base/Tools.h>
#include <Base/UnitsApi.h>

#include <Mod/Measure/App/Measurement.h>

#include "Preferences.h"
#include "Geometry.h"
#include "DrawViewPart.h"
#include "DrawViewBalloon.h"
#include "DrawUtil.h"
#include "LineGroup.h"
#include "ArrowPropEnum.h"


//#include <Mod/TechDraw/App/DrawViewBalloonPy.h>  // generated from DrawViewBalloonPy.xml

using namespace TechDraw;

App::PropertyFloatConstraint::Constraints DrawViewBalloon::SymbolScaleRange = { Precision::Confusion(),
                                                                  std::numeric_limits<double>::max(),
                                                                  (1.0) };

//===========================================================================
// DrawViewBalloon
//===========================================================================
// Balloon coordinates are relative to the position of the SourceView
// X,Y is the center of the balloon bubble
// OriginX, OriginY is the tip of the arrow
// these are in unscaled SourceView coordinates
// Note that if the SourceView coordinate system changes
// (ie location changes or additional items added to the View
// the location of the balloon may also change.

PROPERTY_SOURCE(TechDraw::DrawViewBalloon, TechDraw::DrawView)

const char* DrawViewBalloon::balloonTypeEnums[]= {"Circular",
                                                  "None",
                                                  "Triangle",
                                                  "Inspection",
                                                  "Hexagon",
                                                  "Square",
                                                  "Rectangle",
                                                  NULL};

DrawViewBalloon::DrawViewBalloon(void)
{
    ADD_PROPERTY_TYPE(Text ,     (""),"",App::Prop_None,"The text to be displayed");
    ADD_PROPERTY_TYPE(SourceView,(0),"",(App::PropertyType)(App::Prop_None),"Source view for balloon");
    ADD_PROPERTY_TYPE(OriginX,(0),"",(App::PropertyType)(App::Prop_None),"Balloon origin x");
    ADD_PROPERTY_TYPE(OriginY,(0),"",(App::PropertyType)(App::Prop_None),"Balloon origin y");

    EndType.setEnums(ArrowPropEnum::ArrowTypeEnums);
    ADD_PROPERTY(EndType,(prefEnd()));

    BubbleShape.setEnums(balloonTypeEnums);
    ADD_PROPERTY(BubbleShape,(prefShape()));

    ADD_PROPERTY_TYPE(ShapeScale,(1.0),"",(App::PropertyType)(App::Prop_None),"Balloon shape scale");
    ShapeScale.setConstraints(&SymbolScaleRange);

    ADD_PROPERTY_TYPE(EndTypeScale,(1.0),"",(App::PropertyType)(App::Prop_None),"EndType shape scale");
    ShapeScale.setConstraints(&SymbolScaleRange);

    ADD_PROPERTY_TYPE(TextWrapLen,(-1),"",(App::PropertyType)(App::Prop_None),"Text wrap length; -1 means no wrap");

    ADD_PROPERTY_TYPE(KinkLength,(prefKinkLength()),"",(App::PropertyType)(App::Prop_None),
                                  "Distance from symbol to leader kink");

    ADD_PROPERTY_TYPE(LineVisible,(true),"",(App::PropertyType)(App::Prop_None),"Balloon line visible or hidden");

    SourceView.setScope(App::LinkScope::Global);
    Rotation.setStatus(App::Property::Hidden,true);
    Caption.setStatus(App::Property::Hidden,true);
}

DrawViewBalloon::~DrawViewBalloon()
{

}

void DrawViewBalloon::onChanged(const App::Property* prop)
{
    if (!isRestoring()) {
        if ( (prop == &EndType) ||
             (prop == &BubbleShape)  ||
             (prop == &Text)    ||
             (prop == &KinkLength) ) {
            requestPaint();
        }
    }
    DrawView::onChanged(prop);
}

void DrawViewBalloon::handleChangedPropertyName(Base::XMLReader &reader, const char * TypeName, const char *PropName)
{
    Base::Type type = Base::Type::fromName(TypeName);
    // was sourceView in the past, now is SourceView
    if (SourceView.getClassTypeId() == type && strcmp(PropName, "sourceView") == 0) {
        SourceView.Restore(reader);
    } else if (BubbleShape.getClassTypeId() == type && strcmp(PropName, "Symbol") == 0) {
        // was Symbol, then Shape in the past, now is BubbleShape
        BubbleShape.Restore(reader);
    } else if (BubbleShape.getClassTypeId() == type && strcmp(PropName, "Shape") == 0) {
        // was Symbol, then Shape in the past, now is BubbleShape
        BubbleShape.Restore(reader);
    } else if (ShapeScale.getClassTypeId() == type && strcmp(PropName, "SymbolScale") == 0) {
        // was SymbolScale in the past, now is ShapeScale
        ShapeScale.Restore(reader);
    } else {
        DrawView::handleChangedPropertyName(reader, TypeName, PropName);
    }
}

void DrawViewBalloon::handleChangedPropertyType(Base::XMLReader &reader, const char *TypeName, App::Property *prop)
// transforms properties that had been changed
{
    // also check for changed properties of the base class
    DrawView::handleChangedPropertyType(reader, TypeName, prop);

    // property OriginX had the App::PropertyFloat and was changed to App::PropertyDistance
    if ( (prop == &OriginX) && 
         (strcmp(TypeName, "App::PropertyFloat") == 0) )  {
        App::PropertyFloat OriginXProperty;
        // restore the PropertyFloat to be able to set its value
        OriginXProperty.Restore(reader);
        OriginX.setValue(OriginXProperty.getValue());
    } else if ( (prop == &OriginX) && 
                (strcmp(TypeName, "App::PropertyLength") == 0) )  {
        App::PropertyLength OriginXProperty;
        // restore the PropertyFloat to be able to set its value
        OriginXProperty.Restore(reader);
        OriginX.setValue(OriginXProperty.getValue());

    // property OriginY had the App::PropertyFloat and was changed to App::PropertyDistance
    } else if ( (prop == &OriginY) && 
                (strcmp(TypeName, "App::PropertyFloat") == 0) )  {
        App::PropertyFloat OriginYProperty;
        // restore the PropertyFloat to be able to set its value
        OriginYProperty.Restore(reader);
        OriginY.setValue(OriginYProperty.getValue());
    } else if ( (prop == &OriginY) && 
                (strcmp(TypeName, "App::PropertyLength") == 0) )  {
        App::PropertyLength OriginYProperty;
        // restore the PropertyLength to be able to set its value
        OriginYProperty.Restore(reader);
        OriginY.setValue(OriginYProperty.getValue());
    }
}

short DrawViewBalloon::mustExecute() const
{
    bool result = 0;
    if (!isRestoring()) {
        result =  Text.isTouched();
    }

    if (result) {
        return result;
    }

    auto dvp = getViewPart();
    if (dvp != nullptr) {
        result = dvp->isTouched();
    }
    if (result) {
        return result;
    }

    return DrawView::mustExecute();
}

void DrawViewBalloon::handleXYLock(void) {
    if (isLocked()) {
        if (!OriginX.testStatus(App::Property::ReadOnly)) {
            OriginX.setStatus(App::Property::ReadOnly, true);
            OriginX.purgeTouched();
        }
        if (!OriginY.testStatus(App::Property::ReadOnly)) {
            OriginY.setStatus(App::Property::ReadOnly, true);
            OriginY.purgeTouched();
        }
    } else {
        if (OriginX.testStatus(App::Property::ReadOnly)) {
            OriginX.setStatus(App::Property::ReadOnly, false);
            OriginX.purgeTouched();
        }
        if (OriginY.testStatus(App::Property::ReadOnly)) {
            OriginY.setStatus(App::Property::ReadOnly, false);
            OriginY.purgeTouched();
        }
    }
    DrawView::handleXYLock();
}


DrawViewPart* DrawViewBalloon::getViewPart() const
{
    App::DocumentObject* obj = SourceView.getValue();
    DrawViewPart* result = dynamic_cast<DrawViewPart*>(obj);
    return result;
}

App::DocumentObjectExecReturn *DrawViewBalloon::execute(void)
{
    requestPaint();
    return App::DocumentObject::execute();
}

void DrawViewBalloon::setOrigin(Base::Vector3d newOrigin)
{
    //suspend onChanged/recompute?
    OriginX.setValue(newOrigin.x);
    OriginY.setValue(newOrigin.y);
    origin = QPointF(newOrigin.x, newOrigin.y);
}

double DrawViewBalloon::prefKinkLength(void) const
{
    Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter().
                                         GetGroup("BaseApp")->GetGroup("Preferences")->
                                         GetGroup("Mod/TechDraw/Dimensions");
    double length = hGrp->GetFloat("BalloonKink", 5.0);
    return length;
}

int DrawViewBalloon::prefShape(void) const
{
    Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter()
          .GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("Mod/TechDraw/Decorations");
    int result = hGrp->GetInt("BalloonShape", 0); 
    return result;
}

int DrawViewBalloon::prefEnd(void) const
{
    return Preferences::balloonArrow();
}

Base::Vector3d DrawViewBalloon::getOriginOffset() const
{
    double x = X.getValue();
    double y = Y.getValue();
    Base::Vector3d pos(x, y, 0.0);
    double ox = OriginX.getValue();
    double oy = OriginY.getValue();
    Base::Vector3d org(ox, oy, 0.0);
    Base::Vector3d offset = pos - org;
    return  offset;
}

/*
PyObject *DrawViewBalloon::getPyObject(void)
{
    if (PythonObject.is(Py::_None())) {
        // ref counter is set to 1
        PythonObject = Py::Object(new DrawViewBalloonPy(this),true);
    }
    return Py::new_reference_to(PythonObject);
}
*/