GRTempoChange.h

 
#pragma once
 
/*
  GUIDO Library
  Copyright (C) 2002  Holger Hoos, Juergen Kilian, Kai Renz
  Copyright (C) 2002-2019 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
 
*/
 
#include "GRPTagARNotationElement.h"
 
 
class TempoChange;
class GRStaff;
class VGFont;
 
 
class GRTempoChange : public GRPTagARNotationElement
{
    public:
                         GRTempoChange( GRStaff * stf, const TempoChange * ar, const char* text );
        virtual         ~GRTempoChange() {}
 
        virtual unsigned int getTextAlign() const           { return fTextAlign; }
        virtual void        OnDraw( VGDevice & hdc) const;
        virtual void        tellPosition( GObject * caller,const NVPoint & np );
 
    private:
        float       getYAlign   (float fsize) const;
        float       getXAlign   (VGDevice & hdc) const;
        float       getFormatLength (VGDevice * hdc, float lspace, const FormatStringParserResult& list) const;
        float       DrawFormatString(VGDevice& hdc, float offset, float dy, const FormatStringParserResult& list) const;
        float       DrawText( VGDevice & hdc,  const char * cp, float xOffset, float yOffset, bool alignleft=false) const;
 
 
        NVPoint startPos;
        NVPoint endPos;
 
        float fYAlign;
        float mdx;
        float mdy;
        float fAfterWidth  = 0;
        float fBeforeWidth = 0;
 
        const VGFont*   fFont;
        const VGFont*   fMusicFont;
        float           fNoteScale;
        unsigned int    fTextAlign;
        std::string     fText;
    
        const TempoChange * fTempoChge;
};