RProportional.h

/*
 GUIDO Library
 Copyright (C) 2015 Grame
 
 This Source Code Form is subject to the terms of the Mozilla Public
 License, v. 2.0. If a copy of the MPL was not distributed with this
 file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 Grame Research Laboratory, 11, cours de Verdun Gensoul 69002 Lyon - France
 research@grame.fr
 
 */
 
#ifndef __RProportional__
#define __RProportional__
 
#include <stack>
 
#include "ARMusic.h"
#include "PianoRoll.h"
#include "GUIDOEngine.h"
 
/* \brief a class to create and configure a reduced proportional representation
*/
class RProportional : public PianoRoll {
 
    int   fNumStaves;           // the number of staves
    float fLineHeight;          // a staff line height
    bool  fDrawDurationLine;    // duration lines control
    std::stack<VGColor> fFontColors;    // the saved font colors stack
 
    float   staffTopPos (int i) const;                          // gives a staff top y position
    float   staffBottomPos (int i) const;                           // gives a staff bottom y position
    int     pitch2staff (int midipitch) const;                              // gives the staff num for a given pitch
    int     pitch2staff (int midipitch, int& halfspaces, int& alter) const; // gives the staff + halspaces and alter
    int     diatonic (int midipitch, int& octave, int& alter) const;        // gives the diatonic pitch of a midi pitch + octave and alter
    float   halfspaces2ypos (int halfspaces, int staff) const;
    int     halfSpaces2LedgerLines (int halfspaces) const;
    float   noteWidth () const                          { return fLineHeight * 1.8f;    }
 
    void    DrawHead(float x, float y, int alter, VGDevice* dev) const;         // draw note head
    void    DrawLedgerLines(float x, float y, int count, VGDevice* dev) const;  // draw ledger lines
 
    public:
                 RProportional(ARMusic *arMusic);
                 RProportional(const char *midiFileName);
        virtual ~RProportional() {}
 
        virtual void onDraw(int width, int height, VGDevice *dev);
                void SetDrawDurationLines(bool d)       { fDrawDurationLine = d; }
                bool GetDrawDurationLines()             { return fDrawDurationLine; }
 
    protected:
 
        virtual void  DrawGrid      (DrawParams &drawParams) const;
        virtual void  DrawNote      (int pitch, double date, double dur, const DrawParams& drawParams) const;
        virtual void  DrawMeasureBar(double date, const DrawParams& drawParams) const;
        virtual void  DrawStaff     (int n, int width, VGDevice* dev) const;
        virtual float pitch2ypos    (int midipitch, const DrawParams& drawParams) const;
        virtual float stepheight    (int height) const  { return fLineHeight / 3; }
        virtual void  setColor      (VGDevice* dev, const VGColor& color);
        virtual void  popColor      (VGDevice* dev);
};
 
#endif