updates

ginit.vim

@@ -1,9 +1,47 @@
-"" Font Setup
-Guifont SauceCodePro\ Nerd\ Font\ Mono:h10
-"GuiRenderLigatures 1
-GuiScrollBar 1
-GuiTabline 0
-
-"" Colorscheme
-set background=dark
+""
+"" Misc.
+""
 set termguicolors
+GuiScrollBar 0
+GuiTabline 0
+GuiRenderLigatures 0
+
+"" get colorscheme from gtk
+let gtk_colorscheme = substitute(system('gsettings get org.gnome.desktop.interface color-scheme'), '\n', '', '') 
+if gtk_colorscheme == "'prefer-dark'"
+	set background=dark
+else
+	set background=light
+	hi ColorColumn guibg=#c0bfbc
+endif
+
+""
+"" Font Setup
+""
+
+"" parameters
+let s:defaultfontsize = 10
+let s:fontname = "Source Code Pro"
+
+"" set default font
+:execute "Guifont " . s:fontname . ":h" . s:defaultfontsize
+
+"" increase/decrease font size function
+let s:fontsize = s:defaultfontsize
+function! AdjustFontSize(amount)
+  let s:fontsize = s:fontsize+a:amount
+  :execute "Guifont " . s:fontname . ":h" . s:fontsize
+endfunction
+
+"" reset font size
+function! ResetFontSize()
+  :execute "Guifont " . s:fontname . ":h" . s:defaultfontsize
+endfunction
+
+"" font size keybindings
+noremap <C-S-+> :call AdjustFontSize(1)<CR>
+noremap <C-S-_> :call AdjustFontSize(-1)<CR>
+noremap <C-S-)> :call ResetFontSize()<CR>
+inoremap <C-S-+> <Esc>:call AdjustFontSize(1)<CR>a
+inoremap <C-S-_> <Esc>:call AdjustFontSize(-1)<CR>a
+inoremap <C-S-)> <Esc>:call ResetFontSize()<CR>a