input.conf: bind MBTN_MID to align-to-cursor

Also bind MBTN_MID_DBL to allow resetting align and pan with the mouse.

Author: guidocella

Diff for: DOCS/man/mpv.rst

@@ -344,6 +344,12 @@ Left double click
 Right click
     Toggle pause on/off.
 
+Middle click
+    Drag to pan through the whole video.
+
+Middle double click
+    Reset pan.
+
 Forward/Back button
     Skip to next/previous entry in playlist.
 

Diff for: etc/input.conf

@@ -31,6 +31,8 @@
 #MBTN_LEFT     ignore              # don't do anything
 #MBTN_LEFT_DBL cycle fullscreen    # toggle fullscreen
 #MBTN_RIGHT    cycle pause         # toggle pause/playback mode
+#MBTN_MID      script-binding positioning/align-to-cursor # pan the whole video
+MBTN_MID_DBL   no-osd set video-align-x 0; no-osd set video-align-y 0; no-osd set video-pan-x 0; no-osd set video-pan-y 0 # reset pan
 #MBTN_BACK     playlist-prev       # skip to the previous file
 #MBTN_FORWARD  playlist-next       # skip to the next file