/*
 * (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 Text.h
    \brief Definition of Text graphics class.

    Magics Team - ECMWF 2004

    Started: Jan 2004

    Changes:

*/
#ifndef Text_H
#define Text_H

#include "magics.h"

#include "BaseDriver.h"
#include "BasicGraphicsObject.h"
#include "Label.h"

namespace magics {

enum TextElevation
{
    NORMAL,
    SUPERSCRIPT,
    SUBSCRIPT
};

class NiceText {
public:
    NiceText() : elevation_(NORMAL) {}
    ~NiceText() {}

    void font(const MagFont& font) { font_ = font; }
    const MagFont& font() const { return font_; }

    void elevation(const TextElevation& elevation) { elevation_ = elevation; }
    TextElevation elevation() const { return elevation_; }

    void text(const string& text) { text_ = text; }
    const string& text() const { return text_; }

protected:
    void print(ostream& out) const { out << "[" << text_ << " (" << font_ << ", " << elevation_ << "]" << endl; }

    MagFont font_;
    TextElevation elevation_;
    string text_;

    // -- Friends
    friend ostream& operator<<(ostream& s, const NiceText& p) {
        p.print(s);
        return s;
    }
};


class Text : public BasicGraphicsObject, public vector<PaperPoint> {
public:
    Text();

    Text* clone() const {
        Text* text = new Text;


        for (vector<PaperPoint>::const_iterator it = this->begin(); it != this->end(); it++) {
            text->push_back(*it);
        }

        for (vector<NiceText>::const_iterator it = textBegin(); it != textEnd(); it++) {
            text->addNiceText(*it);
        }

        text->setJustification(justification_);
        text->setBlanking(blanking_);
        text->setAngle(angle_);
        text->setVerticalAlign(verticalAlign_);


        return text;
    }

    virtual ~Text() override;

    void addText(const string& text, const Colour& colour, double height) {
        nice_.push_back(NiceText());
        nice_.back().text(text);
        MagFont font;
        font.colour(colour);
        font.size(height);
        nice_.back().font(font);
    }
    void setText(const string& text);
    void addText(double val, const Colour& colour, double height) { addText(tostring(val), colour, height); }

    void addText(const string& text, const MagFont& f) {
        nice_.push_back(NiceText());
        nice_.back().text(text);
        nice_.back().font(f);
        font_ = f;
    }
    void setFont(const MagFont& f) {
        if (nice_.empty() == false)
            nice_.back().font(f);
        font_ = f;
    }
    const MagFont& getFont() { return nice_.empty() ? font_ : nice_.back().font(); }
    double getMaxFontSize();
    vector<NiceText>::const_iterator textBegin() const { return nice_.begin(); }
    vector<NiceText>::const_iterator textEnd() const { return nice_.end(); }

    void addNiceText(const NiceText& text) const { nice_.push_back(text); }
    const vector<NiceText>& getNiceText() const { return nice_; }
    double getFontMax();

    bool noText() { return nice_.empty(); }
    void clear() { nice_.clear(); }


    void redisplay(const BaseDriver& driver) const override;


    void setJustification(Justification justification) { justification_ = justification; }
    Justification getJustification() const { return justification_; }

    void setBlanking(bool blanking) { blanking_ = blanking; }
    bool getBlanking() const { return blanking_; }

    VerticalAlign getVerticalAlign() const { return verticalAlign_; }
    void setVerticalAlign(const VerticalAlign va) { verticalAlign_ = va; }

    /*!
      \brief Method setting the angle in which the text is written.

      The angle gives the gradient in which the text is written. Angles are given
      in degree and an angle of 0 degree is horizontal. Angles are going
      anticlockwise.

      \sa setAngle
    */
    double getAngle() const { return angle_; }
    /*!
      \brief Method getting the angle in which the text is written.

      The angle gives the gradient in which the text is written. Angles are given
      in degree and an angle of 0 degree is horizontal. Angles are going
      anticlockwise.

      \sa getAngle
    */
    void setAngle(double angle) { angle_ = angle; }

protected:
    virtual void print(ostream&) const override;

    Justification justification_;
    bool blanking_;
    VerticalAlign verticalAlign_;
    double angle_;
    MagFont font_;


private:
    // No copy allowed
    Text(const Text&);
    Text& operator=(const Text&);
    mutable vector<NiceText> nice_;

    // -- Friends
    friend ostream& operator<<(ostream& s, const Text& p) {
        p.print(s);
        return s;
    }
};

}  // namespace magics

#endif
