cocoa: add --ontop-level option for modifying ontop window level

since there are different views on what ontop is, we make the ontop
window level modifiable. at the moment only support for macOS was added.
the default for macOS was changed from 'system' to 'window' since this
fixes an unwanted behaviour in fullscreen and in general causes less
issues with expected behaviour.

Fixes #2376 #3974

2 files changed, 4 insertions, 0 deletions

diff --git a/options/options.c b/options/options.c
index 0bb36ad3fc..d33c2e05d1 100644
--- a/options/options.c
+++ b/options/options.c
@@ -160,6 +160,8 @@ static const m_option_t mp_vo_opt_list[] = {
     OPT_FLAG("taskbar-progress", taskbar_progress, 0),
     OPT_FLAG("snap-window", snap_window, 0),
     OPT_FLAG("ontop", ontop, 0),
+    OPT_CHOICE_OR_INT("ontop-level", ontop_level, 0, 0, INT_MAX,
+                      ({"window", -1}, {"system", -2})),
     OPT_FLAG("border", border, 0),
     OPT_FLAG("fit-border", fit_border, 0),
     OPT_FLAG("on-all-workspaces", all_workspaces, 0),
@@ -233,6 +235,7 @@ const struct m_sub_options vo_sub_opts = {
         .window_scale = 1.0,
         .x11_bypass_compositor = 2,
         .mmcss_profile = "Playback",
+        .ontop_level = -1,
     },
 };
 
diff --git a/options/options.h b/options/options.h
index f465c0f862..926b238b06 100644
--- a/options/options.h
+++ b/options/options.h
@@ -12,6 +12,7 @@ typedef struct mp_vo_opts {
     int taskbar_progress;
     int snap_window;
     int ontop;
+    int ontop_level;
     int fullscreen;
     int border;
     int fit_border;