Re: variable-pitch-mode misaligns org-mode heading tags

[Samuel Wales]

can emacs supply tools that would be useful?

On 9/16/20, Jeff Filipovits <jrfilipovits@gmail.com> wrote:
>
> Adam,
>
> Thanks. You are right of course and I realized the right-align
> issue right after I sent my email.
>
> Adam Spiers <orgmode@adamspiers.org> writes:
>
>> But the whole point of this exercise is to support
>> variable-width
>> fonts.  In this case, the correct position for the end of the
>> single
>> space is most likely not even a multiple of the fixed column
>> width, so
>> it would probably need to be measured in pixels rather than
>> columns. And in order to calculate it, it is first necessary to
>> calculate the exact width in pixels of the colon-delimited list
>> of
>> tags. As I mentioned in the comment linked above, I searched for
>> a way
>> of calculating the pixel width of the tag list, and the best I
>> could
>> find was `pos-visible-in-window-p' which has some issues which I
>> mentioned there.  If you have thoughts on whether I'm right
>> about
>> those, and if so how to solve them, I'd love to hear! Cheers,
>> Adam
>
> It looks like (window-text-pixel-size) could be used to calculate
> the pixel length of the tags list? I am having trouble deciphering
> the manual
> (https://www.gnu.org/software/emacs/manual/html_node/elisp/Pixel-Specification.html#Pixel-Specification)
>
> for pixel specification for spaces, though. The right alignment
> specification for some reason sends the tags to the next line, as
> do most other solutions that I would expect to align the text to
> the right side of the window.
>
> I can experiment more in a couple days, but in the meantime maybe
> someone smarter than me give some hints on how to use the pixel
> specification properties.
>
>> BTW I tried your code and for some reason it didn't insert any
>> space
>> for me, but I didn't look into that yet.
>
> The way it’s written it would only reduce the gap between the
> headline and tags to a space, and it assumes there are multiple
> spaces there already. If there’s no space between the two, I don’t
> think it’ll insert one. Probably not the best way as it was thrown
> together to test the text property fix.
>
> I accepted long ago that the solution to using a variable pitch
> font for org headings was that the tags would not be aligned to
> the right and never looked back, so maybe this is not worth the
> price of fixing it if it is messy. And diving down to calculating
> the pixel width of text seems like it’s getting pretty messy.
>
> --
> Jeff Filipovits
> Spears & Filipovits, LLC
> 1126 Ponce de Leon Avenue
> Atlanta, GA 30306
> 678.237.9302 (direct)
> jrfilipovits@gmail.com
>
> All emails confidential to the fullest extent of the law.
>
>


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