For Light and Classic themes that use black text, we'll use the length/end buttons because Windows uses black for text.
For Dark and HiContrast themes that use a light colour for text, we'll use the length/end buttons IF the OS is set to use the exact same colour for text.
That for example happens if we use Microsoft's HiContrast2 and our HiContrast theme.
If the OS and theme text colour differ, then if we set blend theme colours option, which is the default, we might still use the OS colour for text in Audacity. That will happen if the OS colour has decent contrast to our theme's background colour. Decent is defined as more than 250 difference in RGB values. If we use the OS colour for text, then we get the proper length/end buttons.
Note that this adds a new feature to the theme blending, in that the text colour will often adapt. Useful when using custom text colours with HiContrast2. When the text colour adapts, we will continue to get proper length/end buttons.
Advice to users is to match OS and Audacity themes, and use the blend option. When themes don't match, it may be desirable to disable blending.
They had lost the focus/voice-over functionality because I added code to draw them in the
theme colour. Now I disable that code, IF recolouring is both set and active. This will happen
for example, if Hi-Contrast is used with the Hi-Contrast system theme.
... The return codes were mostly ignored anyway, and exceptions will be thrown
instead.
It seems there was also confusion whether the return values of Track::Paste
and Track::SyncLockAdjust were to indicate success or indicate whether there
was any change. No matter now.
The Edit buttons now enable/disable whenever their Menu counterparts
are enabled/disabled, but there are residual issues due to incorrect
behavior in "Select all if none selected" (noted in comments).
... A non-narrowing conversion out to long long is a necessity, but the
conversions to float and double are simply conveniences.
Conversion from floating is explicit, to avoid unintended consequences with
arithmetic operators, when later sampleCount ceases to be an alias for an
integral type.
Some conversions are not made explicit, where I expect to change the type of
the variable later to have mere size_t width.
This brings more of the code from DarkAudacity into Audacity, though not yet enabled. This will make cherry picking later easier.
- Changing colour of html displays now possible, as colour links are visible for substitution. (Can't use css as wxHTML is very limited).
- Export can now be preset to a particular format independent of preferences.
- SnapTo reversion on zoom now a DA controlled option.
- Caching of pinning preference for faster repaint because preferences are slow.
- Record Append now has sensible limit on number of tracks, rather than giving an error, and flipping the meaning of shift is now DA controlled.
