/*
 * (C) Copyright 1996-2016 ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 * In applying this licence, ECMWF does not waive the privileges and immunities
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */

/*! \file Symbol.cc
    \brief Implementation of Symbol graphics class (template).

    Magics Team - ECMWF 2004

    Started: Jan 2004

    Changes:

*/
#include "Symbol.h"
#include "ImportObject.h"
#include "Polyline.h"
#include "Text.h"

using namespace magics;


Symbol::Symbol() : marker_(0), height_(0.2), outline_(false), connectLine_(false) {}


Symbol::~Symbol() {}


void Symbol::print(ostream& out) const {
    out << "Symbol<P>[";
    BasicGraphicsObject::print(out);
    out << ", height = " << height_;
    out << ", marker = " << marker_;
    out << ", nb_points = " << this->size();
    out << "]";
}


SymbolProperties::SymbolProperties(Colour colour, double height, const string& marker, const string& label) :
    colour_(colour),
    height_(height),
    marker_(marker),
    label_(label),
    position_(Symbol::M_NONE),
    outline_(false),
    connectLine_(false),
    image_(false) {
    font_.size(height_);
    font_.colour(colour_);
}

SymbolProperties::SymbolProperties(Colour colour, double height, int marker, const string& label) :
    colour_(colour),
    height_(height),
    marker_(Symbol::convert(marker)),
    label_(label),
    position_(Symbol::M_NONE),
    outline_(false),
    connectLine_(false),
    image_(false) {
    font_.size(height_);
    font_.colour(colour_);
}

SymbolProperties::SymbolProperties() :
    colour_(Colour("none")),
    height_(0),
    marker_(Symbol::convert(1)),
    label_(""),
    position_(Symbol::M_NONE),
    outline_(false),
    connectLine_(false),
    image_(false) {
    font_.size(height_);
    font_.colour(colour_);
}


void SymbolProperties::setSymbol(const string& symbol, int marker) {
    marker_ = !symbol.empty() ? symbol : Symbol::convert(marker);
}

Symbol* SymbolProperties::symbol(const string& type) const {
    Symbol* symbol = 0;

    const unsigned text_size = text_.size();


    if (magCompare(type, "marker")) {
        if (image_) {
            ImageSymbol* img = new ImageSymbol(image_path_, image_format_);
            img->set(image_width_, image_height_);
            symbol = img;
        }

        else if (text_size) {
            TextSymbol* text = new TextSymbol();
            text->position(position_);
            symbol = text;
            text->font(font_);
            text->text(text_);
            text->blanking(blanking_);
        }
        else
            symbol = new Symbol();
    }
    if (magCompare(type, "both") || magCompare(type, "marker_text")) {
        TextSymbol* text = new TextSymbol();

        text->position(position_);
        symbol = text;
        text->font(font_);
        text->text(text_);
        text->blanking(blanking_);
    }

    if (magCompare(type, "text")) {
        if (text_size == 0) {
            SimpleTextSymbol* stext = new SimpleTextSymbol(label_);
            stext->position(position_);
            symbol = stext;
            stext->font(font_);
            vector<string> helper;
            helper.push_back(label_);
            stext->text(helper);
        }
        else {
            TextSymbol* text = new TextSymbol();
            text->position(position_);
            symbol = text;
            text->font(font_);
            text->text(text_);
            text->blanking(blanking_);

            symbol->setColour(Colour("none"));
            symbol->setSymbol(marker_);
            symbol->setHeight(0.0);

            return symbol;
        }
    }
    if (magCompare(type, "number")) {
        TextSymbol* text = new TextSymbol();
        text->position(position_);
        symbol       = text;
        MagFont font = font_;
        font.colour(colour_);
        text->font(font);

        text->text(text_);
        text->blanking(blanking_);
        symbol->setColour(Colour("none"));
        symbol->setSymbol(marker_);
        symbol->setHeight(0.0);

        return symbol;
    }

    symbol->setColour(colour_);
    symbol->setSymbol(marker_);
    symbol->setHeight(height_);
    symbol->outline(outline_, outlineColour_, outlineThickness_, outlineStyle_);
    symbol->connectline(connectLine_, connectLineColour_, connectLineThickness_, connectLineStyle_);

    return symbol;
}


void ComplexSymbol::print(ostream& out) const {
    out << "ComplexSymbol[" << endl;
    for (const auto& item : items_)
        out << *item << ", " << endl;
    out << "]" << endl;
}


struct WithinFunction {
    WithinFunction(const Polyline& box) : boundingbox_(box) {}
    const Polyline& boundingbox_;
    bool operator()(const PaperPoint& point) { return (boundingbox_.within(point) == false); }
};

void Symbol::redisplay(const BaseDriver& driver) const {
    if (!connectLine_) {
        if (!colour_.none())
            driver.redisplay(*this);
        return;
    }
    // We create a Polyline!
    Polyline line;
    line.setColour(connectLineColour_);
    line.setLineStyle(connectLineStyle_);
    line.setThickness(connectLineThickness_);
    for (vector<PaperPoint>::const_iterator point = begin(); point != end(); ++point) {
        line.push_back(*point);
    }
    // first  we remove the point that are outside!
    // here we cast to be able to clean the symbol list!
    Symbol symbol = *this;
    symbol.connectline(false);

    vector<PaperPoint>::iterator last = std::remove_if(symbol.begin(), symbol.end(), WithinFunction(boundingbox_));
    symbol.erase(last, symbol.end());

    driver.redisplay(symbol);

    vector<Polyline*> lines;

    line.clip(boundingbox_, lines);

    for (vector<Polyline*>::const_iterator l = lines.begin(); l != lines.end(); ++l) {
        driver.redisplay(**l);
    }
}

void Symbol::boundingbox(const Polyline& boundingbox) {
    boundingbox_ = boundingbox;
}

void TextSymbol::redisplay(const BaseDriver& driver) const {
    if (!connectLine()) {
        if (position_ == M_CENTRE) {
            // send text and symbol;
            Symbol::redisplay(driver);
            // Now we display the text
            vector<PaperPoint>::const_iterator point = begin();
            vector<string>::const_iterator info      = texts_.begin();
            while (point != end() || info != texts_.end()) {
                Text text;
                text.addText(*info, font_);
                text.push_back(*point);
                text.setBlanking(blanking_);
                text.setVerticalAlign(MHALF);
                text.setJustification(MCENTRE);
                ++point;
                text.redisplay(driver);

                ++info;
            }
            return;
        }
        // We make sure here that we have the right number of texxt.
        if (texts_.empty()) {
            texts_.push_back("?");
        }
        while (texts_.size() < size()) {
            texts_.push_back(texts_.back());
        }

        driver.redisplay(*this);
        return;
    }
    // We create a Polyline!
    Polyline line;
    line.setColour(connectLineColour());
    line.setLineStyle(connectLineStyle());
    line.setThickness(connectLineThickness());
    for (vector<PaperPoint>::const_iterator point = begin(); point != end(); ++point) {
        line.push_back(*point);
    }

    vector<Polyline*> lines;

    boundingbox_.clip(line, lines);

    for (vector<Polyline*>::const_iterator l = lines.begin(); l != lines.end(); ++l) {
        driver.redisplay(**l);
    }
    // first  we remove the point that are outside!
    // here we cast to be able to clean the symbol list!
    TextSymbol symbol = *this;
    symbol.connectline(false);

    vector<PaperPoint>::iterator last = std::remove_if(symbol.begin(), symbol.end(), WithinFunction(boundingbox_));
    symbol.erase(last, symbol.end());

    driver.redisplay(symbol);
}

void ImageSymbol::redisplay(const BaseDriver& driver) const {
    for (vector<PaperPoint>::const_iterator point = begin(); point != end(); ++point) {
        ImportObject* object = new ImportObject();
        object->setOrigin(*point);
        object->setPath(path_);
        object->setFormat(format_);
        object->setWidth(width_);
        object->setHeight(height_);
        driver.redisplay(*object);
    }
}
