Dropped lightline, now using a custom statusline

It displays everything what lightline did before, but I took special
care to make it compatible with all colorschemes I am using.

1 files changed, 136 insertions, 40 deletions

diff --git a/vimrc-full b/vimrc-full
index 3b9cdd6..a4fb101 100644
--- a/vimrc-full
+++ b/vimrc-full
@@ -746,22 +746,7 @@ nnoremap <F9> :TagbarToggle<CR>| " bind TagBar to hotkey F9
 set noshowmode    | " mode will be shown twice, in lightline and below, so we want to deactivate one
 set laststatus=2  | " required by AirLine and Lightline, without status line does not appear until a window split
 
-set statusline=
-set statusline+=%{(&modified?nr2char(0xF0C7):'')}
-set statusline+=%{(&readonly\ ?\ ''\ :\ '')}
-set statusline+=%{fnamemodify(getcwd(),':~')}
-set statusline+=%{nr2char(0x20)}
-set statusline+=%{nr2char(0xE0B1)}
-set statusline+=%{nr2char(0x20)}
-set statusline+=%f
-set statusline+=%*%=
-set statusline+=%l:%c(%p%%)
-" set statusline+=%t%m
-" set statusline+=%{TagInStatusLine()}
-" set statusline+=%#warningmsg#
-" set statusline+=%{SyntasticStatuslineFlag()}
-
-Plug 'itchyny/lightline.vim'
+" Plug 'itchyny/lightline.vim'
 
 " lightline-buffer ui settings
 " replace these symbols with ASCII characters if your environment does not support unicode
@@ -933,8 +918,8 @@ if has("python")
     let g:ale_sign_warning     = ''
   else
     Plug 'scrooloose/syntastic'
-    set statusline+=%#warningmsg#
-    set statusline+=%{SyntasticStatuslineFlag()}
+    " set statusline+=%#warningmsg#
+    " set statusline+=%{SyntasticStatuslineFlag()}
     let g:LatexBox_latexmk_preview_continuously = 1
     let g:LatexBox_viewer                       = "evince"
     let g:syntastic_always_populate_loc_list    = 1
@@ -1011,6 +996,28 @@ let g:netrw_winsize       = 20      | " window size in percent
 " ======================================================================================================================
 
 function! ExtendColorTheme()
+  " let g:status_fg=synIDattr(hlID('Cursor'), 'fg#')
+  " let g:status_bg=synIDattr(hlID('Cursor'), 'bg#')
+  " let g:status_sel=synIDattr(hlID('Text'), 'fg#')
+  " let g:status_sel='#ffffff'
+  let g:status_fg='#00aa00'
+  let g:status_bg='#000000'
+  let g:status_sel='#ffff00'
+
+  " execute 'highlight! StatusLine'
+  "       \ .' guibg=NONE'
+  "       \ .' guifg='.g:status_bg
+  "       \ .' gui=inverse'
+
+  " " execute 'highlight! User1 gui=NONE'
+  " execute 'highlight! User1 guibg='.g:status_sel
+  " execute 'highlight! User1 guifg='.g:status_fg
+
+  " execute 'highlight! User2 gui=NONE'
+  " execute 'highlight! User2 guibg='.g:status_sel
+  " execute 'highlight! User2 guifg=NONE'
+
+
   filetype on
   filetype plugin on
   filetype indent on
@@ -1033,7 +1040,7 @@ function! ExtendColorTheme()
   highlight! PmenuThumb cterm=inverse
   highlight! MoreMsg cterm=inverse
   highlight! link Folded LineNr
-  highlight! Cursor guibg=#729fcf ctermbg=yellow
+  " highlight! Cursor guibg=#729fcf ctermbg=yellow
   highlight! link VertSplit LineNr
   " highlight! SpellBad ctermbg=none
   highlight! SpecialKey ctermfg=19
@@ -1082,9 +1089,7 @@ function! ExtendColorTheme()
 " if argc() == 0
   " rv
   " autocmd VimEnter * split +bro\ ol
-" endif
-"
-
+  " endif
 endfunction
 autocmd! ColorScheme * call ExtendColorTheme()
 
@@ -1092,24 +1097,6 @@ autocmd! ColorScheme * call ExtendColorTheme()
 set termguicolors | " When on, uses highlight-guifg and highlight-guibg attributes in the terminal (=24bit color) incompatible with nvim
 " set t_ut=
 
-if filereadable(expand("~/.vimrc_background")) && filereadable(expand("~/.config/base16-shell/colortest"))
-  let g:base16_shell_path="~/.config/base16-shell/scripts"
-  let base16colorspace=256
-  let syntax_cmd="skip" " vim internal, use base16 and no default colors
-  set background=dark
-  source ~/.vimrc_background
-else
-  let g:PaperColor_Theme_Options = {
-  \   'theme': {
-  \     'default': {
-  \       'transparent_background': 1
-  \     }
-  \   }
-  \ }
-  set background=dark
-  colorscheme PaperColor
-endif
-
 " ======================================================================================================================
 " CONVENIENCE:
 " ======================================================================================================================
@@ -1163,3 +1150,112 @@ autocmd VimEnter,WinEnter * exec ':set scrolljump='.winheight(0)/2
 map <leader>h :echo map(synstack(line('.'), col('.')), 'synIDattr(v:val, "name")')<CR>
 
 " call setqflist( map(systemlist("git show --name-only --pretty=''"), {_, p->{'filename': fnamemodify(p, ':.')}}))
+"
+if filereadable(expand("~/.vimrc_background")) && filereadable(expand("~/.config/base16-shell/colortest"))
+  let g:base16_shell_path="~/.config/base16-shell/scripts"
+  let base16colorspace=256
+  let syntax_cmd="skip" " vim internal, use base16 and no default colors
+  set background=dark
+  source ~/.vimrc_background
+else
+  let g:PaperColor_Theme_Options = {
+        \   'theme': {
+        \     'default': {
+        \       'transparent_background': 1
+        \     }
+        \   }
+        \ }
+  set background=dark
+  colorscheme PaperColor
+endif
+
+augroup status
+  function! CreateInvertGroup(highlight_group)
+    if(synIDattr(hlID(a:highlight_group), "reverse")==1)
+      let w:color=synIDattr(hlID(a:highlight_group), "fg#")
+    else
+      let w:color=synIDattr(hlID(a:highlight_group), "bg#")
+    endif
+
+    let l:retval=a:highlight_group.'_invert'
+    if(exists('w:color') && w:color == '')
+      let w:color = 'NONE'
+    endif
+    exec 'highlight '.retval.' gui=NONE guifg='.w:color
+    return l:retval
+  endfunction
+
+  function! UpdateStatus(highlight_group)
+    let l:invert_group = CreateInvertGroup(a:highlight_group)
+    return
+      \ "%#StatusLineHighlight#"                         .
+      \ "%#".a:highlight_group."#"                       .
+      \ "%{(&readonly\ ?\ '\ \ \ '\ :\ '')}"            .
+      \ "%{(&modified\ ?\ nr2char(0xF0C7).'\ '\ :\ '')}" .
+      \ "%(%w%h%q\ %-8{mode(1)}%)"                        .
+      \ "%{nr2char(0xe621)}"                             .
+      \ "%(\ %{fnamemodify(getcwd(),\ ':~')}\ %)"        .
+      \ "%{nr2char(0xf44a)}"                             .
+      \ "%(\ %f\ %)"                                     .
+      \ "%#".l:invert_group."#"                          .
+      \ "%{nr2char(0xE0B4)\ }"                           .
+      \ ''                                               .
+      \ "%="                                             .
+      \ ''                                               .
+      \ "%#".l:invert_group."#"                          .
+      \ "%{nr2char(0xE0B6)}"                             .
+      \ "%#".a:highlight_group."#"                       .
+      \ "%1(%)"                                          .
+      \ "%{\ &filetype}"                                 .
+      \ "%(\ %{nr2char(0xe621)}\ %)"                     .
+      \ "%{&fileencoding}"                               .
+      \ "%(\ %{nr2char(0xe621)}\ %)"                     .
+      \ "%{&fileformat}"                                 .
+      \ "%(\ %{nr2char(0xe621)}\ %)"                     .
+      \ "%4l:%-4c"                                       .
+      \ "%-3p%%"                                         .
+      \ '' " end                                         ^
+  endfunction
+
+  function! UpdateTabline(highlight_group)
+    let l:invert_group = CreateInvertGroup(a:highlight_group)
+    return
+      \ "%#".a:highlight_group."#"                    .
+      \ "%3(\ %)"                                    .
+      \ "%{nr2char(0xe621)}"                          .
+      \ "%(%{v:servername}\ %{v:this_session}%)"      .
+      \ "%#".l:invert_group."#"                       .
+      \ "%{nr2char(0xE0B4)\ }"                        .
+      \ ''                                            .
+      \ "%="                                          .
+      \ ''                                            .
+      \ "%#".l:invert_group."#"                       .
+      \ "%{nr2char(0xE0B6)}"                          .
+      \ "%#".a:highlight_group."#"                    .
+      \ "%(\ \ %{fugitive#head()}\ %)"               .
+      \ "%{nr2char(0xe621)}"                          .
+      \ "%(\ \ %{tabpagenr()}/%{tabpagenr('$')}\ %)" .
+      \ "%##"                                         .
+      \ "" " end                                      ^
+  endfunction
+
+  let g:group_active = "StatusLine"
+  let g:group_inactive = "StatusLineNC"
+  let g:group_tabline = "TabLineSel"
+
+  function ApplyColorScheme()
+    " set up statusline, global and current window individually
+    set statusline=%!UpdateStatus(g:group_inactive)
+    setlocal statusline=%!UpdateStatus(g:group_active)
+    " set up the tabline (match colors)
+    set tabline=%!UpdateTabline(g:group_tabline)
+  endfunction
+  " apply colors from the loaded colorscheme...
+  call ApplyColorScheme()
+
+  " when changing the colorscheme also apply new colors to the statusbar...
+  autocmd ColorScheme * call ApplyColorScheme()
+
+  autocmd WinEnter    * setlocal statusline=%!UpdateStatus(g:group_active)
+  autocmd WinLeave    * setlocal statusline<
+augroup END