osc.lua: add an icon for the miscellaneous menu

Add the generic menu to bar layouts to provide discoverability for the
select menus to users who don't realize you can right click OSC buttons.

There's no space to add it in box layout.

DOCS/man/osc.rst

@@ -21,7 +21,7 @@ The Interface
 ::
 
     +---------+----------+------------------------------------------+----------+
-    | pl prev | pl next  |  title                                   |    cache |
+    | pl prev | menu | pl next | title                                   cache |
     +------+--+---+------+---------+-----------+------+-------+-----+-----+----+
     | play | skip | skip | time    |  seekbar  | time | audio | sub | vol | fs |
     |      | back | frwd | elapsed |           | left |       |     |     |    |
@@ -36,6 +36,11 @@ pl prev
     right-click     open the playlist selector
     =============   ================================================
 
+menu
+    =============   ================================================
+    left-click      open the menu
+    =============   ================================================
+
 pl next
     =============   ================================================
     left-click      play next file in playlist
@@ -514,6 +519,12 @@ clicked. ``mbtn_mid`` commands are also triggered with ``shift+mbtn_left``.
 
 ``playlist_prev_mbtn_right_command=script-binding select/select-playlist; script-message-to osc osc-hide``
 
+``menu_mbtn_left_command=script-binding select/menu; script-message-to osc osc-hide``
+
+``menu_mbtn_mid_command=``
+
+``menu_mbtn_right_command=``
+
 ``playlist_next_mbtn_left_command=playlist-next; show-text ${playlist} 3000``
 
 ``playlist_next_mbtn_mid_command=show-text ${playlist} 3000``

player/lua/osc.lua

@@ -75,6 +75,10 @@ local user_opts = {
     playlist_prev_mbtn_mid_command = "show-text ${playlist} 3000",
     playlist_prev_mbtn_right_command = "script-binding select/select-playlist; script-message-to osc osc-hide",
 
+    menu_mbtn_left_command = "script-binding select/menu; script-message-to osc osc-hide",
+    menu_mbtn_mid_command = "",
+    menu_mbtn_right_command = "",
+
     playlist_next_mbtn_left_command = "playlist-next",
     playlist_next_mbtn_mid_command = "show-text ${playlist} 3000",
     playlist_next_mbtn_right_command = "script-binding select/select-playlist; script-message-to osc osc-hide",
@@ -135,6 +139,7 @@ local icon_font = "mpv-osd-symbols"
 -- print(output)
 local icons = {
     prev = "\238\132\144",           -- E110
+    menu = "\238\132\130",           -- E102
     next = "\238\132\129",           -- E101
     pause = "\238\128\130",          -- E002
     play = "\238\132\129",           -- E101
@@ -1603,13 +1608,20 @@ local function bar_layout(direction, slim)
     lo.alpha[1] = user_opts.boxalpha
 
 
-    -- Playlist prev/next
+    -- Playlist prev
     geo = { x = osc_geo.x + padX, y = line1,
             an = 4, w = 18, h = 18 - padY }
     lo = add_layout("playlist_prev")
     lo.geometry = geo
     lo.style = osc_styles.topButtonsBar
 
+    -- Menu
+    geo = { x = geo.x + geo.w + padX, y = geo.y, an = geo.an, w = geo.w, h = geo.h }
+    lo = add_layout("menu")
+    lo.geometry = geo
+    lo.style = osc_styles.topButtonsBar
+
+    -- Playlist next
     geo = { x = geo.x + geo.w + padX, y = geo.y, an = geo.an, w = geo.w, h = geo.h }
     lo = add_layout("playlist_next")
     lo.geometry = geo
@@ -1848,16 +1860,19 @@ local function osc_init()
     end
     bind_mouse_buttons("title")
 
-    -- playlist buttons
-
-    -- prev
+    -- playlist prev
     ne = new_element("playlist_prev", "button")
 
     ne.content = icons.prev
     ne.enabled = (pl_pos > 1) or (loop ~= "no")
     bind_mouse_buttons("playlist_prev")
 
-    --next
+    -- menu
+    ne = new_element("menu", "button")
+    ne.content = icons.menu
+    bind_mouse_buttons("menu")
+
+    -- playlist next
     ne = new_element("playlist_next", "button")
 
     ne.content = icons.next