use zathura and synctex for latex editing

1 files changed, 52 insertions, 20 deletions

diff --git a/vim/ftplugin/tex.vim b/vim/ftplugin/tex.vim
index 1a43f9e..ef754e9 100644
--- a/vim/ftplugin/tex.vim
+++ b/vim/ftplugin/tex.vim
@@ -1,32 +1,61 @@
 let b:tex_flavor="latex"
 
 " :make converts to pdf
-setlocal makeprg=(cd\ /tmp\ &&\ pdflatex\ --halt-on-error\ %:p)
+setlocal makeprg=(cd\ /tmp\ &&\ pdflatex\ --synctex=1\ --halt-on-error\ %:p)
 
 " xpdf needs to be manually refreshed when the file changes
 function! s:xpdf()
-    let l:pdf = '/tmp/' . expand('<afile>:t:r') . '.pdf'
-    let l:processes = split(system('ps xo args'), '\n')
-    for l:process in l:processes
-        if l:process =~ 'xpdf -remote localhost'
-            call system('xpdf -remote localhost -reload')
-            return
-        endif
-    endfor
-    call system('xpdf -remote localhost ' . l:pdf . ' &')
+    if s:is_running('xpdf -remote localhost')
+        call system('xpdf -remote localhost -reload')
+        return
+    endif
+    call system('xpdf -remote localhost ' . s:current_pdf() . ' &')
 endfunction
 
 " evince treats opening the same file twice as meaning 'reload'
 function! s:evince()
-    let l:pdf = '/tmp/' . expand('<afile>:t:r') . '.pdf'
-    call system('evince ' . l:pdf . ' &')
+    call system('evince ' . s:current_pdf() . ' &')
+endfunction
+
+" zathura automatically reloads
+function! s:zathura()
+    if s:is_running('^zathura')
+        return
+    endif
+    call remote_startserver("vim-zathura")
+    call system('zathura --fork -x "vim --servername vim-zathura --remote +%{line} %{input}" ' . s:current_pdf())
+endfunction
+
+function! s:current_pdf()
+    let base = expand('<afile>:t:r')
+    if base == ''
+        let base = expand('%:t:r')
+    endif
+    return '/tmp/' . base . '.pdf'
+endfunction
+
+function! s:is_running(re)
+    let processes = split(system('ps xo args'), '\n')
+    for process in processes
+        if process =~ a:re
+            return 1
+        endif
+    endfor
+    return 0
+endfunction
+
+function! Synctex()
+    if s:is_running('^zathura')
+        exe "silent !zathura --synctex-forward " . line('.') . ":" . col('.') . ":" . expand('%:p') . " " . s:current_pdf()
+        redraw
+    endif
 endfunction
 
 " don't load the pdf if the make failed
 function! s:make_errors()
-    let l:qf = getqflist()
-    for l:line in l:qf
-        if l:line['type'] == 'E'
+    let qf = getqflist()
+    for line in qf
+        if line['type'] == 'E'
             return 1
         endif
     endfor
@@ -35,23 +64,26 @@ endfunction
 
 let b:automake_enabled = 0
 function! s:automake()
-    let l:old_shellpipe = &shellpipe
+    let old_shellpipe = &shellpipe
     let &shellpipe = '>'
     try
         silent make!
     finally
-        let &shellpipe = l:old_shellpipe
+        let &shellpipe = old_shellpipe
     endtry
 endfunction
 
 augroup _tex
     autocmd!
-    if executable('xpdf') && strlen(expand('$DISPLAY'))
-        autocmd QuickFixCmdPost make if !s:make_errors() | call s:xpdf()   | endif
+    if executable('zathura') && strlen(expand('$DISPLAY'))
+        autocmd QuickFixCmdPost make if !s:make_errors() | call s:zathura() | endif
+    elseif executable('xpdf') && strlen(expand('$DISPLAY'))
+        autocmd QuickFixCmdPost make if !s:make_errors() | call s:xpdf()    | endif
     elseif executable('evince') && strlen(expand('$DISPLAY'))
-        autocmd QuickFixCmdPost make if !s:make_errors() | call s:evince() | endif
+        autocmd QuickFixCmdPost make if !s:make_errors() | call s:evince()  | endif
     endif
     autocmd CursorHold,CursorHoldI,InsertLeave <buffer> if b:automake_enabled | call s:automake() | endif
+    autocmd CursorMoved <buffer> call Synctex()
 augroup END
 
 noremap <buffer> <silent><F6> :let b:automake_enabled = !b:automake_enabled<CR><F5>