Notepad3: TinyExpr: Support math expression evaluation in text

[RaiKoHoff]

Support math expression evaluation in text, e.g. by TinyExpr library.
So simple math expressions results can be calculated "on the fly" in text.

A prototype is available as development beta: _X_MUI_4.18.809.1048:

• Select an math expression and the result is displayed in the statusbar (| Eval nn.mm |)
• If expression can not be evaluated, an error indicator is shown (| Eval ^[n] |),
  where the 'n' indicates the error position in the selection.
• A double-click in the "| Eval nn.mm |" section of the status-bar will copy the value to the clipboard.

This is a evaluation prototype, so there are many enhancements to that 1st draft possible:

• Make it switchable by Settings Menu (handling of the status-bar section)
• Feed result at caret position into document on "magic" char combi (e.g. "=:")
• result display in status-bar section is not the right place ... better proposal?
• beside the "on the fly" interpreter, support compiled expression with unbound variables
  and bind variables at evaluation trigger times
• throw it to byte recycle bin completely ...
• ... further suggestions ...

Please keep in mind: keep it simple and usable - I don't want to build a new "MS Excel" here.
Discussion is opened...

[hpwamr]

Hello @RaiKoHoff ,
Tested version: Notepad3 (64-bit) X_MUI v4.18.809.1048

Suggestions: 🤔

• Instead of using the status bar to shows the Eval:, showing the Eval: in a popup window?
• given the possibility to adjust the number of digit showed (now is max: 7)
• using regional/local settings to shows the "." of "," for digital and digital grouping symbols

Issues:

[Window] (Settings Out of the Box)
1920x1080 HighDpiToolBar=0
1920x1080 PosX=944
1920x1080 PosY=16
1920x1080 SizeX=960
1920x1080 SizeY=1008
1920x1080 Maximized=0
1920x1080 Zoom=0

• From a new installation "Out of the Box" or after pushing on "Snap to Default Position" the result "Eval: is incompletely displayed !

• After a NP3 window resizing horizontally (in + or in -), the Eval: is correctly displayed !

[RaiKoHoff]

@hpwamr : Thank you for testing.
My vote against a Popup is:
I like the "on the fly" calculation by selection, but I don't like to be disturbed by a Popup every time I select something what might be a valid expression ... 🤔

About the other points: Will see, if can do something ...

[RaiKoHoff]

Please check current development beta: _TinyExpr_4.18.814.1056
Selecting Language Parameter:
[Settings2] PreferedLanguageLocaleName changed to PreferredLanguageLocaleName ('rr')
New Fractional-Font-Size dialog available (if Direct2D/DirectWrite is enabled) (experimental)
New Font dialog: -> new strings for language translations ... 🤔

[hpwamr]

From a new installation "Out of the Box" or after pushing on "Snap to Default Position" the result "Eval: is incompletely displayed !

Tested with Notepad3 (64-bit) TinyExpr v4.18.815.1057
Now the result "Eval:" is correctly displayed ! 👍

[RaiKoHoff]

New development beta version (_TinyExpr_4.18.823.1069):

• add logical expressions
• evaluation of current line triggered by sequence "=?", replacing '?' by result, if valid expression is found before "=?".

[RaiKoHoff]

New development beta version (_TinyExpr_4.18.825.1072) now supports "_Rectangular Selections_".
Row separated numbers are internally combined by "+"(add), "-"(minus) numbers have to be make explicit:

[hpwamr]

As far as I am concerned, this issue may be closed....