... This is done with Shift+Ctrl+wheel and pointer in the vertical ruler, and
the pointer y coordinate near the bottom of the dB scale.
If y coordinate is far from there, then Shift+Ctrl+wheel changes dB level
without change of magnification (as before this commit).
... whenever they really describe the size of a buffer that fits in memory, or
of a block file (which is never now more than a megabyte and so could be fit in
memory all at once), or a part thereof.
... for functions in final classes.
override is like const -- it's not necessary, but it helps the compiler to
catch mistakes.
There may be some overriding functions not explicitly declared virtual and I did
not identify such cases, in which I might also add override.
... Should have no effect on generated code, except perhaps some slight faster
virtual function calls. Mostly useful as documentation of design intent.
Tried to mark every one of our classes that inherits from another, or is a
base for others, or has abstract virtual functions, and a few others besides.
... When you click in a stereo clip, move the correct partner clip with it.
When you click in the selection and it spans clips, move all clips containing
any part of the selection. (As horizontal dragging does.) Even if these are
not all within the same stereo track.
I implemented this rule: If any clip moves up (or down) by n audio tracks
(not counting the label tracks), all clips must move the same number, and
all must move from mono to mono or left to left or right to right. If that
is not possible, no move happens.
... also make WaveTrack responsible for storing and validating the bounds
... also let the bounds vary per-track even though other settings are default
... also change some code names to mention "period" not "undertone"
... Also removed one line from the track control drop-down, and changed
accelerators to more mnemonic choices.
Also the open page of View Settings... determines track view type after OK
... SpectrogramSettings does that instead, and Preferences or View Settings
are the user interface for changing it.
Handle invalidation of spectrogram pixel cache for scale type changes,
just as for other changes of settings. No more
TrackArtist::InvalidateSpectrumCache().
View type of track now switches to Spectrum when applying or OKing the
View Settings... dialog and the Spectrogram page is open (and for now
it is still the only page)
... With a careful sweep of uses of WaveTrack::GetDisplay() to remove
assumptions about the ordering of the values.
Using < and <= on enum values is mostly a bad idea.
