/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */

/*
    Rosegarden
    A MIDI and audio sequencer and musical notation editor.

    This program is Copyright 2000-2008
        Guillaume Laurent   <glaurent@telegraph-road.org>,
        Chris Cannam        <cannam@all-day-breakfast.com>,
        Richard Bown        <richard.bown@ferventsoftware.com>

    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
    Bown to claim authorship of this work have been asserted.

    Other copyrights also apply to some parts of this work.  Please
    see the AUTHORS file and individual file headers for details.

    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.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef _RG_NOTEFONTMAP_H_
#define _RG_NOTEFONTMAP_H_

#include "base/Exception.h"
#include <map>
#include <set>
#include <string>
#include "SystemFont.h"
#include <qstring.h>
#include <qstringlist.h>
#include <utility>
#include <qxml.h>
#include "gui/editors/notation/NoteCharacterNames.h"


class QXmlParseException;
class QXmlAttributes;


namespace Rosegarden
{



class NoteFontMap : public QXmlDefaultHandler
{
public:
    typedef Exception MappingFileReadFailed;

    NoteFontMap(std::string name); // load and parse the XML mapping file
    ~NoteFontMap();

    /**
     * ok() returns false if the file read succeeded but the font
     * relies on system fonts that are not available.  (If the file
     * read fails, the constructor throws MappingFileReadFailed.)
     */
    bool ok() const { return m_ok; }

    std::string getName() const { return m_name; }
    std::string getOrigin() const { return m_origin; }
    std::string getCopyright() const { return m_copyright; }
    std::string getMappedBy() const { return m_mappedBy; }
    std::string getType() const { return m_type; }
    bool isSmooth() const { return m_smooth; }

    std::set<int> getSizes() const;
    std::set<CharName> getCharNames() const;

    bool getStaffLineThickness(int size, unsigned int &thickness) const;
    bool getLegerLineThickness(int size, unsigned int &thickness) const;
    bool getStemThickness(int size, unsigned int &thickness) const;
    bool getBeamThickness(int size, unsigned int &thickness) const;
    bool getStemLength(int size, unsigned int &length) const;
    bool getFlagSpacing(int size, unsigned int &spacing) const;
    
    bool hasInversion(int size, CharName charName) const;

    bool getSrc(int size, CharName charName, std::string &src) const;
    bool getInversionSrc(int size, CharName charName, std::string &src) const;

    SystemFont *getSystemFont(int size, CharName charName, int &charBase) const;
    SystemFont::Strategy getStrategy(int size, CharName charName) const;
    bool getCode(int size, CharName charName, int &code) const;
    bool getInversionCode(int size, CharName charName, int &code) const;
    bool getGlyph(int size, CharName charName, int &glyph) const;
    bool getInversionGlyph(int size, CharName charName, int &glyph) const;

    bool getHotspot(int size, CharName charName, int width, int height,
                    int &x, int &y) const;

    // Xml handler methods:

    virtual bool startElement
    (const QString& namespaceURI, const QString& localName,
     const QString& qName, const QXmlAttributes& atts);

    virtual bool characters(QString &);

    bool error(const QXmlParseException& exception);
    bool fatalError(const QXmlParseException& exception);

    void dump() const;

    // Not for general use, but very handy for diagnostic display
    QStringList getSystemFontNames() const;

    // want this to be private, but need access from HotspotData
    static int toSize(int baseSize, double factor, bool limitAtOne);

private:
    class SymbolData
    {
    public:
        SymbolData() : m_fontId(0),
                       m_src(""), m_inversionSrc(""),
                       m_code(-1), m_inversionCode(-1),
                       m_glyph(-1), m_inversionGlyph(-1) { }
        ~SymbolData() { }

        void setFontId(int id) { m_fontId = id; }
        int  getFontId() const { return m_fontId; }

        void setSrc(std::string src) { m_src = src; }
        std::string getSrc() const { return m_src; }

        void setCode(int code) { m_code = code; }
        int  getCode() const { return m_code; }

        void setGlyph(int glyph) { m_glyph = glyph; }
        int  getGlyph() const { return m_glyph; }

        void setInversionSrc(std::string inversion) { m_inversionSrc = inversion; }
        std::string getInversionSrc() const { return m_inversionSrc; }

        void setInversionCode(int code) { m_inversionCode = code; }
        int  getInversionCode() const { return m_inversionCode; }

        void setInversionGlyph(int glyph) { m_inversionGlyph = glyph; }
        int  getInversionGlyph() const { return m_inversionGlyph; }

        bool hasInversion() const {
            return m_inversionGlyph >= 0 ||
                   m_inversionCode  >= 0 ||
                   m_inversionSrc   != "";
        }

    private:
        int m_fontId;
        std::string m_src;
        std::string m_inversionSrc;
        int m_code;
        int m_inversionCode;
        int m_glyph;
        int m_inversionGlyph;
    };

    class HotspotData
    {
    private:
        typedef std::pair<int, int> Point;
        typedef std::pair<double, double> ScaledPoint;
        typedef std::map<int, Point> DataMap;

    public:
        HotspotData() : m_scaled(-1.0, -1.0) { }
        ~HotspotData() { }
        
        void addHotspot(int size, int x, int y) {
            m_data[size] = Point(x, y);
        }

        void setScaledHotspot(double x, double y) {
            m_scaled = ScaledPoint(x, y);
        }

        bool getHotspot(int size, int width, int height, int &x, int &y) const;

    private:
        DataMap m_data;
        ScaledPoint m_scaled;
    };

    class SizeData
    {
    public:
        SizeData() : m_stemThickness(-1),
                     m_beamThickness(-1),
                     m_stemLength(-1),
                     m_flagSpacing(-1),
                     m_staffLineThickness(-1),
                     m_legerLineThickness(-1) { }
        ~SizeData() { }

        void setStemThickness(unsigned int i) {
            m_stemThickness = (int)i;
        }
        void setBeamThickness(unsigned int i) {
            m_beamThickness = (int)i;
        }
        void setStemLength(unsigned int i) {
            m_stemLength = (int)i;
        }
        void setFlagSpacing(unsigned int i) {
            m_flagSpacing = (int)i;
        }
        void setStaffLineThickness(unsigned int i) {
            m_staffLineThickness = (int)i;
        }
        void setLegerLineThickness(unsigned int i) {
            m_legerLineThickness = (int)i;
        }
        void setFontHeight(int fontId, unsigned int h) {
            m_fontHeights[fontId] = (int)h;
        }

        bool getStemThickness(unsigned int &i) const {
            if (m_stemThickness >= 0) {
                i = (unsigned int)m_stemThickness;
                return true;
            } else return false;
        }

        bool getBeamThickness(unsigned int &i) const {
            if (m_beamThickness >= 0) {
                i = (unsigned int)m_beamThickness;
                return true;
            } else return false;
        }

        bool getStemLength(unsigned int &i) const {
            if (m_stemLength >= 0) {
                i = (unsigned int)m_stemLength;
                return true;
            } else return false;
        }

        bool getFlagSpacing(unsigned int &i) const {
            if (m_flagSpacing >= 0) {
                i = (unsigned int)m_flagSpacing;
                return true;
            } else return false;
        }

        bool getStaffLineThickness(unsigned int &i) const {
            if (m_staffLineThickness >= 0) {
                i = (unsigned int)m_staffLineThickness;
                return true;
            } else return false;
        }

        bool getLegerLineThickness(unsigned int &i) const {
            if (m_legerLineThickness >= 0) {
                i = (unsigned int)m_legerLineThickness;
                return true;
            } else return false;
        }

        bool getFontHeight(int fontId, unsigned int &h) const {
            std::map<int, int>::const_iterator fhi = m_fontHeights.find(fontId);
            if (fhi != m_fontHeights.end()) {
                h = (unsigned int)fhi->second;
                return true;
            }
            return false;
        }       
       
    private:
        int m_stemThickness;
        int m_beamThickness;
        int m_stemLength;
        int m_flagSpacing;
        int m_staffLineThickness;
        int m_legerLineThickness;
        std::map<int, int> m_fontHeights; // per-font-id
    };

    //--------------- Data members ---------------------------------

    std::string m_name;
    std::string m_origin;
    std::string m_copyright;
    std::string m_mappedBy;
    std::string m_type;
    bool m_smooth;

    std::string m_srcDirectory;

    typedef std::map<CharName, SymbolData> SymbolDataMap;
    SymbolDataMap m_data;

    typedef std::map<CharName, HotspotData> HotspotDataMap;
    HotspotDataMap m_hotspots;

    typedef std::map<int, SizeData> SizeDataMap;
    SizeDataMap m_sizes;

    typedef std::map<int, QString> SystemFontNameMap;
    SystemFontNameMap m_systemFontNames;

    typedef std::map<int, SystemFont::Strategy> SystemFontStrategyMap;
    SystemFontStrategyMap m_systemFontStrategies;

    typedef std::map<SystemFontSpec, SystemFont *> SystemFontMap;
    mutable SystemFontMap m_systemFontCache;

    typedef std::map<int, int> CharBaseMap;
    CharBaseMap m_bases;

    // For use when reading the XML file:
    bool m_expectingCharacters;
    std::string *m_characterDestination;
    std::string m_hotspotCharName;
    QString m_errorString;

    bool checkFile(int size, std::string &src) const;
    QString m_fontDirectory;

    bool m_ok;
};


class NoteCharacterDrawRep;


}

#endif