From 69a6175be2afd9f391c965c40ea8ccf5261ccae9 Mon Sep 17 00:00:00 2001
From: Roman Dobosz <gryf73@gmail.com>
Date: Tue, 29 Oct 2013 20:56:17 +0100
Subject: [PATCH] Added Linux fonts support

---
 README          | 30 ++++++++++++++-------
 plugin/zoom.vim | 70 ++++++++++++++++++++++++++++++++++---------------
 2 files changed, 69 insertions(+), 31 deletions(-)

diff --git a/README b/README
index 2fd9591..75044b3 100644
--- a/README
+++ b/README
@@ -1,19 +1,29 @@
-This is a mirror of http://www.vim.org/scripts/script.php?script_id=2321
-
-Control Vim editor font size with key "+", or key "-".
-Press "+" key, Vim editor gui font size will change bigger.
-And, press "-" key, Vim editor gui font size will change smaller.
+This is fork of a mirror of http://www.vim.org/scripts/script.php?script_id=2321
 
+Control Vim editor font size with keyboard or mouse.
 This plugin is for GUI only.
 
 
 Normal Mode:
-    +                  ... change font size bigger
-    -                  ... change font size smaller
+    Keypad +              ... incerase font size
+    Ctrl-MouseWheelUp
+
+    Keypad -              ... decrease font size
+    Ctrl-MouseWheelDown   
+
+    Keypad /              ... reset font size to initial state
 
 Command-line Mode:
-    :ZoomIn            ... change font size bigger
-    :ZoomOut           ... change font size smaller
-    :ZoomReset         ... reset font size changes.
+    :ZoomIn               ... incerase font size
+    :ZoomOut              ... decrease font size
+    :ZoomReset            ... reset font size to initial state
 
+==============================================================================
 
+1. Copy the zoom.vim script to
+   $HOME/vimfiles/plugin or $HOME/.vim/plugin directory.
+   Refer to ':help add-plugin', ':help add-global-plugin' and
+   ':help runtimepath' for more details about Vim plugins.
+   Or just use pathogen (https://github.com/tpope/vim-pathogen)
+
+2. Restart Vim.
diff --git a/plugin/zoom.vim b/plugin/zoom.vim
index fcd8fa6..e17dafe 100644
--- a/plugin/zoom.vim
+++ b/plugin/zoom.vim
@@ -1,3 +1,9 @@
+"The guard. Zoom will only work in graphical Vim. For terminal version try to
+"find out how to increase/decrease font size in your terminal emulator.
+if !has("gui")
+  finish
+endif
+
 if &cp || exists("g:loaded_zoom")
     finish
 endif
@@ -14,24 +20,43 @@ command! -narg=0 ZoomIn    :call s:ZoomIn()
 command! -narg=0 ZoomOut   :call s:ZoomOut()
 command! -narg=0 ZoomReset :call s:ZoomReset()
 
-" map
-nmap + :ZoomIn<CR>
-nmap - :ZoomOut<CR>
+" map. I like keypad mappings
+nmap <kPlus> :ZoomIn<CR>
+nmap <kMinus> :ZoomOut<CR>
+nmap <kDivide> :ZoomReset<CR>
+
+nmap <C-ScrollWheelUp> :ZoomIn<CR>
+nmap <C-ScrollWheelDown> :ZoomOut<CR>
 
 " guifont size + 1
 function! s:ZoomIn()
-  let l:fsize = substitute(&guifont, '^.*:h\([^:]*\).*$', '\1', '')
-  let l:fsize += 1
-  let l:guifont = substitute(&guifont, ':h\([^:]*\)', ':h' . l:fsize, '')
-  let &guifont = l:guifont
+  " Let's check, what system we are dealing with
+  if has("win32")
+    let l:fsize = substitute(&guifont, '^.*:h\([^:]*\).*$', '\1', '')
+    let l:fsize += 1
+    let l:guifont = substitute(&guifont, ':h\([^:]*\)', ':h' . l:fsize, '')
+    let &guifont = l:guifont
+  elseif has('unix')
+    " TODO: Might not work on OS X
+    let l:font = split(&guifont)
+    let l:font[-1] = l:font[-1] + 1
+    let &guifont = join(l:font, " ")
+  endif
 endfunction
 
 " guifont size - 1
 function! s:ZoomOut()
-  let l:fsize = substitute(&guifont, '^.*:h\([^:]*\).*$', '\1', '')
-  let l:fsize -= 1
-  let l:guifont = substitute(&guifont, ':h\([^:]*\)', ':h' . l:fsize, '')
-  let &guifont = l:guifont
+  " Same as above
+  if has("win32")
+    let l:fsize = substitute(&guifont, '^.*:h\([^:]*\).*$', '\1', '')
+    let l:fsize -= 1
+    let l:guifont = substitute(&guifont, ':h\([^:]*\)', ':h' . l:fsize, '')
+    let &guifont = l:guifont
+  elseif has('unix')
+    let l:font = split(&guifont)
+    let l:font[-1] = l:font[-1] - 1
+    let &guifont = join(l:font, " ")
+  endif
 endfunction
 
 " reset guifont size
@@ -43,7 +68,7 @@ let &cpo = s:save_cpo
 finish
 
 ==============================================================================
-zoom.vim : control gui font size with "+" or "-" keys.
+zoom.vim : control gui font size with "+" or "-" keypad keys.
 ------------------------------------------------------------------------------
 $VIMRUNTIMEPATH/plugin/zoom.vim
 ==============================================================================
@@ -53,21 +78,23 @@ email   : mail@nanasi.jp
 version : 2008/07/18 10:00:00
 ==============================================================================
 
-Control Vim editor font size with key "+", or key "-".
-Press "+" key, Vim editor gui font size will change bigger.
-And, press "-" key, Vim editor gui font size will change smaller.
-
+Control Vim editor font size with keyboard or mouse.
 This plugin is for GUI only.
 
 
 Normal Mode:
-    +                  ... change font size bigger
-    -                  ... change font size smaller
+    Keypad +              ... incerase font size
+    Ctrl-MouseWheelUp
+
+    Keypad -              ... decrease font size
+    Ctrl-MouseWheelDown   
+
+    Keypad /              ... reset font size to initial state
 
 Command-line Mode:
-    :ZoomIn            ... change font size bigger
-    :ZoomOut           ... change font size smaller
-    :ZoomReset         ... reset font size changes.
+    :ZoomIn               ... incerase font size
+    :ZoomOut              ... decrease font size
+    :ZoomReset            ... reset font size to initial state
 
 ==============================================================================
 
@@ -75,6 +102,7 @@ Command-line Mode:
    $HOME/vimfiles/plugin or $HOME/.vim/plugin directory.
    Refer to ':help add-plugin', ':help add-global-plugin' and
    ':help runtimepath' for more details about Vim plugins.
+   Or just use pathogen (https://github.com/tpope/vim-pathogen)
 
 2. Restart Vim.