Change font size quickly

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created 2004 · complexity intermediate · author Wouter Bolsterlee · version 6.0

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If you regularly switch to a larger or smaller font, for example because someone looking at your code thinks the letters are too small, or because you want to lay back in your chair while reading, this tip is for you.

The following script defines two commands, :LargerFont and :SmallerFont, to allow quick adjustments to the font size used in the gtk2 gui. Change minfontsize and maxfontsize to suit your needs. See below for alternative solutions.

To use this script, put the following code into ~/.vim/plugin/gtk2fontsize.vim or in your vimrc.

let s:pattern = '^\(.* \)\([1-9][0-9]*\)

let s:minfontsize = 6 let s:maxfontsize = 16 function! AdjustFontSize(amount) if has("gui_gtk2") && has("gui_running") let fontname = substitute(&guifont, s:pattern, '\1', '') let cursize = substitute(&guifont, s:pattern, '\2', '') let newsize = cursize + a:amount if (newsize >= s:minfontsize) && (newsize <= s:maxfontsize) let newfont = fontname . newsize let &guifont = newfont endif else echoerr "You need to run the GTK2 version of Vim to use this function." endif endfunction function! LargerFont() call AdjustFontSize(1) endfunction command! LargerFont call LargerFont() function! SmallerFont() call AdjustFontSize(-1) endfunction command! SmallerFont call SmallerFont()