mac: add an option to change the App activation policy

useful to hide the app icon in the Dock if necessary.

DOCS/man/options.rst

@@ -5858,6 +5858,13 @@ The following video options are currently all specific to ``--vo=gpu`` and
     set anyway.
     OS X and cocoa-cb only
 
+
+``--macos-app-activation-policy=<regular|accessory|prohibited>``
+    Changes the App activation policy. With accessory the mpv icon in the Dock
+    can be hidden. (default: regular)
+
+    macOS only.
+
 ``--android-surface-size=<WxH>``
     Set dimensions of the rendering surface used by the Android gpu context.
     Needs to be set by the embedding application if the dimensions change during

osdep/macosx_application.h

@@ -28,6 +28,7 @@ struct macos_opts {
     struct m_color macos_title_bar_color;
     int macos_fs_animation_duration;
     int macos_force_dedicated_gpu;
+    int macos_app_activation_policy;
     int cocoa_cb_sw_renderer;
     int cocoa_cb_10bit_context;
 };

osdep/macosx_application.m

@@ -63,6 +63,8 @@ const struct m_sub_options macos_conf = {
             OPT_CHOICE(macos_fs_animation_duration, {"default", -1}),
             M_RANGE(0, 1000)},
         {"macos-force-dedicated-gpu", OPT_FLAG(macos_force_dedicated_gpu)},
+        {"macos-app-activation-policy", OPT_CHOICE(macos_app_activation_policy,
+            {"regular", 0}, {"accessory", 1}, {"prohibited", 2})},
         {"cocoa-cb-sw-renderer", OPT_CHOICE(cocoa_cb_sw_renderer,
             {"auto", -1}, {"no", 0}, {"yes", 1})},
         {"cocoa-cb-10bit-context", OPT_FLAG(cocoa_cb_10bit_context)},

video/out/mac/common.swift

@@ -61,7 +61,24 @@ class Common: NSObject {
     }
 
     func initApp() {
-        NSApp.setActivationPolicy(.regular)
+        guard let mpv = mpv else {
+            log.sendError("Something went wrong, no MPVHelper was initialized")
+            exit(1)
+        }
+
+        var policy: NSApplication.ActivationPolicy = .regular
+        switch mpv.macOpts.macos_app_activation_policy {
+        case 0:
+            policy = .regular
+        case 1:
+            policy = .accessory
+        case 2:
+            policy = .prohibited
+        default:
+            break
+        }
+
+        NSApp.setActivationPolicy(policy)
         setAppIcon()
     }