[kln2-devel] Re: KLearnNotes2-devel digest, Vol 1 #10 - 2 msgs

[Mo <Mo...@no...>]

> // In future we may implement double sharps and double flats,
> // but let us keep things simple for now.
> 


> 
> // what to do with integer representation of the name?=20
> // we have to check how it is used; should we number
> // * all the notes (like 0=3DC, 1=3DC#, 2=3DDb, 3=3DD )
> // * distinct note's positions (like 0=3DC, 1=3DC#/Db, 2=3DD)
> // * only base notes (like it is now - 0=3DC, 1=3DD )
> // * or abandon the integer representation as an unclear
> //   one?

> KeySignature* keySignature; // or maybe there should be a parent
> // Staff class with a keySignature property?
> // This would inherit a QCanvas, take care of all the staff lines,=20
> // key type (bass/treble), key signature and so on? In such a case
> // each note would hold a pointer to it's parent Staff rather than
> // to the keySignature directly; but for now 'KS* kS' would do.
> } //////////////////////////////// END OF NEW NOTE MEMBERS
> 
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=20
> Implementation:=20
> 
> 1. add the declarations; define empty functions; check that
>    things compile and work as previously (note: not that=20
>    obvious, e.g. checking note's name will have to be changed=20
>    in few places)
> 
> 2. note2name (current exercise) without changing KeySignature
> (that is in C Major key only)
> 
> this is quite stupid from user's point of view but makes an
>   important step in step-by-step implementation;
> this is quite easy to implement because this does not change
>   program's structure; the only major decisions are to be made
>   about the widgets layout:
> 
> - extra buttons (ordered in piano keyboard style? but maybe two
>   sets of 'black' keys: one above with sharps, one below with
>   flats?:
>   C#   D#     E# F#
> C    D     E  F     G=20
>   Db   Eb  Fb    Gb
> and so on ? )=20
> 
> - extra name checkboxes (grrr this makes the interface quite
>   unclear :( )
> 
> - user's input : letter with Shift =3D sharp note, letter with
>   Ctrl =3D flat note (note, that Alts are on some kbds used for=20
>   'accidented' local letters like =F3)
> - bigger pool of all notes
> - when choosing notes for a test, not only range and name=20
>   checkboxes but also three new checkboxes:
>         * natural notes (which activates middle row of nameButtons)
>         * sharp notes   (which activates top row of nameButtons)
>         * flat notes    (which activates button row of nameButtons)
> They should probably be placed to the right of nameButtons,
> bellow rangeSliders.
> 
> 3. the same as (2.) but with manually changed KeySignature:=20
> 
> now this becomes important from user's point of view:
> user chooses a key signature from a combo in the toolbar (to=20
> focus: G major); the key should be displayed; and now if "CMajor=20
> F" note is shown the user should recognize it is F sharp.
> 
> I guess, the questions should be asked only about notes without=20
> extra accidentals.
>    Lessons:=20
>         * Gmajor, notes in middle region (one sharp F#)
>         * Gmajor, notes in upper region
>         * Gmajor, notes in lower region
>         * Gmajor, all notes
>         * Fmajor, notes in m.r. (one flat, H/B b)
>         * Fmajor, u.r.
>         * Fmajor, l.r.
>         * Fmajor, all notes
>         * Dmajor, m.r. (two sharps: F# and C#)
>    and so-on.
> 
> At this point we know both accidented notes and key signatures=20
> work. We can move few-fold:
> 
> 4a. the same with randomly chosen KeySignature for each question
>    Lessons:
>         Gmajor and Cmajor, (no sharps or one sharp at F)
>         Dmajor, Gmajor and Cmajor (no sharps one or two sharps)
>         Amajor, Dmajor, Gmajor and Cmajor (0,1 or 3 sharps)
>         and so on
> 
>         Fmajor and Cmajor,      (no flats, or one flat at H/B)
>         Hb/Bb major, Fmajor and Cmajor (no flat, one or two flats)
> 
> 4b. exercises about key signatures
> 4c. fretboard (AT LAST! :)
> 4d. sequence reading exercise=20
> 
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> 
> --=20
> 
>      \/   /|\  Marek Wieckowski
>   #####  | | |
>  =3D . . =3D  \|/  Institute of Theoretical Physics
>     U      |   Warsaw University
>   / ~ \___ |
>  <|   |    |
>   > . <    |   http://www.fuw.edu.pl/~wiecko
>  <<___>>   |   http://klearnnotes2.sourceforge.net
> 
> 
> 
> 
> 
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> End of KLearnNotes2-devel Digest
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