Re: Colorschemes and split window

On 27/04/12 23:41, rameo wrote:
> On Friday, April 27, 2012 8:29:03 PM UTC+2, Tony Mechelynck wrote:
>> On 27/04/12 18:34, rameo wrote:
>>> On Friday, April 27, 2012 6:18:29 PM UTC+2, Ben Fritz wrote:
>>>> On Friday, April 27, 2012 10:56:55 AM UTC-5, rameo wrote:
>>>>> I use this code in my .vimrc to use my dark colorscheme when I open a .vim page and my light colorscheme when I open whatever other page:
>>>>>
>>>>> augroup filetype_colorscheme
>>>>> au BufEnter *
>>>>> \ if !exists('b:colors_name')
>>>>> \ | if &ft == "vim"
>>>>> \ | let b:colors_name = 'color_dark'
>>>>> \ | else
>>>>> \ | let b:colors_name = 'color_light'
>>>>> \ | endif
>>>>> \ | endif
>>>>> \ | exe 'colorscheme' b:colors_name
>>>>> augroup END
>>>>>
>>>>> However, it doesn't work fine in split windows.
>>>>> When I click on a .vim file in the split window all not .vim files changes to the dark colorscheme as well.
>>>>> I would like to keep them their own colorscheme; a .vim page always the dark colorscheme and whatever other file always the light colorscheme.
>>>>>
>>>>> I've learned that colorschemes will always affect the entire vim instance and that it is not possible to have a different color scheme per split window.
>>>>>
>>>>> In that point I would like to disable above code for split windows in order to give all split windows the default colorscheme (which I can change afterwards using :color "colorscheme") but don't know how to realize this. Whatever I tried didn't do what I want it to do.
>>>>> Can anyone help me?
>>>>
>>>> You can check the number of windows with winnr('$'). If > 1, you have multiple split windows.
>>>
>>> Hi Ben,
>>>
>>> That's what I tried.
>>> But wherever I put it in above code it doesn't work.
>>> Where would you place this in above code?
>>>
>>
>> Around your autocommand:
>>
>> augroup filetype_colorscheme
>> au BufEnter *
>> \ if winnr('$') == 1
>> \ | if !exists('b:colors_name')
>> \ | if &ft == "vim"
>> \ | let b:colors_name = 'color_dark'
>> \ | else
>> \ | let b:colors_name = 'color_light'
>> \ | endif
>> \ | endif
>> \ | exe 'colorscheme' b:colors_name
>> \ | else
>> \ | colorscheme default
>> | | endif
>> augroup END
>>
>> or (maybe more readable)
>>
>> function SetColors()
>> if exists('b:colors_name')
>> exe 'colorscheme' b:colors_name
>> return
>> endif
>> if winnr('$') > 1
>> colorscheme default
>> elseif &ft == 'vim'
>> colorscheme color_dark
>> else
>> colorscheme color_light
>> endif
>> let b:colors_name = g:colors_name
>> endfunction
>> augroup filetype_colorscheme
>> au BufEnter * call SetColors()
>> augroup END
>>
>> This way, the autocommand will be defined unconditionally, but if it
>> finds that at BufEnter three are more than one window in the current tab
>> it will go back to the default scheme.
>>
>>
>> Best regards,
>> Tony.
>> --
>> Actor: So what do you do for a living?
>> Doris: I work for a company that makes deceptively shallow serving
>> dishes for Chinese restaurants.
>> -- Woody Allen, "Without Feathers"
>
> Thank you very much.
>
> Just one little thing..
>
> What I noted is that when I have a split window it gives the default colorscheme (that's ok) but I would like to have the possibility to change the colorscheme of all split buffers in a window with the :color "colorscheme" command (and if possible keep this colorscheme when I switch from one Tab to another and back to the split window or when I click in another split buffer in the split window.
> (when I have multiple .vim files in the split window I prefer the dark colorscheme, when I have multiple .txt files in the split, I prefer the light colorscheme. That isn't possible now. When I use :color "colorscheme" and click in another split window all other split windows changes again to the default colorscheme)
>
> Is it possible to do?
>

Well, it is possible, with a slight refinement to the above. You may
want to remember the Vim terminology:

- buffer: one file (or file-like data) in Vim memory, with the relevant
metadata. It may be displayed in zero or more windows.
- window: a viewport into a buffer. If several windows display the same
buffer, changes made in one are reflected in all others. Also, if
several windows display the same buffer, the displayed regions of that
buffer may or may not overlap.
- tab page: a set of one or more windows which are displayed at the same
time.

"another split buffer in a split window" has no meaning. Maybe you meant
"another window in the current tab"?

You can use variables with different scopes:

b:something local to a buffer
g:something global to all Vim
l:something local to a function
s:something local to a script
t:something local to a tab page
v:something predefined at compile-time
w:something local to a window

With no prefix it falls back to v: for compatibility for a few
predefined names, otherwise l: if inside a function, otherwise g:

See also the help for the following functions:

bufname()
bufnr()
bufwinnr()
tabpagebuflist()
tabpagenr()
tabpagewinnr()
winbufnr()
winnr()

See also |setting-tabline| for an example of how to use these functions
(albeit for a different purpose).


Best regards,
Tony.
--
Ten million Linux users can't be wrong!

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