From 76fd4b4e334ae600ad12169867ee381784831a92 Mon Sep 17 00:00:00 2001
From: torque <torque@1>
Date: Sat, 28 Feb 2015 17:22:31 -0800
Subject: Lua: add mp.get_screen_margins().

When used with mp.get_screen_size(), mp.get_screen_margins() allows a
Lua script to determine what portion of the mpv window actually has the
video in it.

(cherry picked from commit 1bbf1eb3ce2bdb0ef3ec3b045074bcb2f3af6a7a)
---
 player/lua.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/player/lua.c b/player/lua.c
index 47bcc07110..f329c47d11 100644
--- a/player/lua.c
+++ b/player/lua.c
@@ -971,6 +971,17 @@ static int script_get_screen_size(lua_State *L)
     return 3;
 }
 
+static int script_get_screen_margins(lua_State *L)
+{
+    struct MPContext *mpctx = get_mpctx(L);
+    struct mp_osd_res vo_res = osd_get_vo_res(mpctx->osd, OSDTYPE_EXTERNAL);
+    lua_pushnumber(L, vo_res.ml);
+    lua_pushnumber(L, vo_res.mt);
+    lua_pushnumber(L, vo_res.mr);
+    lua_pushnumber(L, vo_res.mb);
+    return 4;
+}
+
 static int script_get_mouse_pos(lua_State *L)
 {
     struct MPContext *mpctx = get_mpctx(L);
@@ -1280,6 +1291,7 @@ static const struct fn_entry main_fns[] = {
     FN_ENTRY(set_osd_ass),
     FN_ENTRY(get_osd_resolution),
     FN_ENTRY(get_screen_size),
+    FN_ENTRY(get_screen_margins),
     FN_ENTRY(get_mouse_pos),
     FN_ENTRY(get_time),
     FN_ENTRY(input_define_section),
-- 
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