Re: Changing vim graphical mode to handle colors like in color terminal mode

2015-05-25 22:23 GMT+03:00 toothpik <toothpik6@gmail.com>:
> On Mon, May 25, 2015 at 10:08:03PM +0300, Nikolay Pavlov wrote:
>> 2015-05-25 21:03 GMT+03:00 toothpik <toothpik6@gmail.com>:
>> > On Mon, May 25, 2015 at 08:06:49PM +0300, Nikolay Pavlov wrote:
>> >> 2015-05-25 6:37 GMT+03:00 Michael Darling <darlingm@gmail.com>:
>> >> > I'd like to have vim in graphical mode handle colors (default fg/bg color, syntax highlighting) handle it the same as in color terminal mode.
>> >> >
>> >> > What's the easiest way to do this? Is there an option, or do I need to change my local source?
>> >> >
>> >> > Where is the code that vim either grabs a cterm of gui color? I want to set it so in gui mode, it grabs the cterm color instead.
>> >> >
>> >> > I figure this would either be in src/syntax.c, or src/eval.c.
>> >> >
>> >> > src/syntax.c::highlight_has_attr() uses modec of 'g' for GUI, 'c' for cterm, 't' for (no color) term. But, it's just returning if the given attribute exists, so it's not what I'm looking for.
>> >> >
>> >> > src/syntax.c::highlight_color() is where I was sure I found what I needed. It also uses modec, and has code like if(modec == 'g') ... color = HL_TABLE()[id - 1].sg_gui_fg; ... if(modec == 'c') ... n = HL_TABLE()[id - 1].sg_cterm_fg - 1;
>> >> >
>> >> > But, I can make the first command in highlight_color() be "exit(0)" and vim works just fine in cli or graphical mode.
>> >> >
>> >> >
>> >> > Ultimately, with the same .vimrc in vim or "vim -g"/"gvim", I just want it to look the same. I'm fine losing the #xxxxxx color ability. 256 colors is fine for me.
>> >> >
>> >> >
>> >> > I've thought about changing the hard-coded and color/*.vim files, removing everything gui*= and duplicating the cterm*=. Perhaps that's an easier way to go than changing source. I figured there would be a "if gui use gui_fg, else if cterm use cterm_fg".
>> >
>> >> ctermfg=136
>> >
>> >> Vim in cterm mode emits escape sequences which are then parsed by a
>> >> terminal. Escape sequences specify color *number* (name is trunslated
>> >> to number using some C code), not color itself and Vim knows nothing
>> >> about which color terminal will actually display.
>> >
>> >> Color scheme authors expect terminals to display specific colors for
>> >> each of the color codes: upper 240 colors are somewhat standard, lower
>> >> 16 are less standard (e.g. konsole may switch ten of them in
>> >> Appearence tab in terminal profile setting, usually all 16 are
>> >> customizable).
>> >
>> >> Also note that ctermfg=Red is ctermfg=9, guifg=Red translates given
>> >> color using system/toolkit-specific function: search for
>> >> gui_mch_get_color in vim sources.
>> >
>> >> Thus if you want to translate colorschemes you need to do two things:
>> >
>> >> 0. Transform color names into cterm color codes.
>> >> 1. Transform cterm color codes into hexadecimal colors.
>> >
>> > at some point someone has to point out how much of this is already done
>> > for us -- have a look at Matt Wozniski's epic plugin CSApprox at
>> >
>> > http://www.vim.org/scripts/script.php?script_id=2390
>> >
>> > and be sure to notice the CSASnapshot function -- you can make a cterm
>> > colorscheme that closely resembles your favorite gui colors, and choose
>> > between the two in your .vimrc based on "if has('gui_running')"
>
>> I know CSApprox. But the initial request was the opposite: *not* use
>> GUI colorscheme in terminal, but use *terminal* colorscheme in GUI.
>
> what part of the colorscheme created by CSASnapshot is not a *terminal*
> colorscheme?

Did you read? Request is *not* to have a terminal colorscheme. Request
is to have a *GUI* colorscheme. Out of terminal one.

CSApprox is creating *terminal* colorcheme out of GUI.

Try the following test:

vim --cmd 'set rtp=~/.vam/CSApprox' -u NORC -i NONE -N
:CSApproxSnapshot /tmp/foo.vim

. What happens now is that /tmp/foo.vim contains colorscheme that starts with …

CSAHi Normal term=NONE cterm=NONE ctermbg=231 ctermfg=16 gui=NONE
guibg=white guifg=black

. Precisely:

… guibg=white …

. &background was dark, terminal background color is black. EPIC FAIL.
This is absolutely not what was requested.

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