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wayland: Add setting/api to check the policy to set up the X11 display

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This replaces meta_should_autostart_x11_display(). The "on-demand" policy
is not honored yet.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/709
This commit is contained in:
Carlos Garnacho 2019-05-24 20:59:28 +02:00 committed by Carlos Garnacho
parent e8949292c1
commit 7ef32f747b
7 changed files with 33 additions and 9 deletions
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2
data/org.gnome.mutter.gschema.xml.in
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@ -124,6 +124,8 @@
real-time scheduling. The executable
or user must have CAP_SYS_NICE.
Requires a restart.
• “autostart-xwayland” — initializes Xwayland lazily if there are
X11 clients. Requires restart.
</description>
</key>

1
src/backends/meta-settings-private.h
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@ -34,6 +34,7 @@ typedef enum _MetaExperimentalFeature
META_EXPERIMENTAL_FEATURE_SCALE_MONITOR_FRAMEBUFFER = (1 << 0),
META_EXPERIMENTAL_FEATURE_KMS_MODIFIERS = (1 << 1),
META_EXPERIMENTAL_FEATURE_RT_SCHEDULER = (1 << 2),
META_EXPERIMENTAL_FEATURE_AUTOSTART_XWAYLAND = (1 << 3),
} MetaExperimentalFeature;
#define META_TYPE_SETTINGS (meta_settings_get_type ())

2
src/backends/meta-settings.c
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@ -266,6 +266,8 @@ experimental_features_handler (GVariant *features_variant,
features |= META_EXPERIMENTAL_FEATURE_KMS_MODIFIERS;
else if (g_str_equal (feature, "rt-scheduler"))
features |= META_EXPERIMENTAL_FEATURE_RT_SCHEDULER;
else if (g_str_equal (feature, "autostart-xwayland"))
features |= META_EXPERIMENTAL_FEATURE_AUTOSTART_XWAYLAND;
else
g_info ("Unknown experimental feature '%s'\n", feature);
}

2
src/core/display.c
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@ -760,7 +760,7 @@ meta_display_open (void)
display->selection = meta_selection_new (display);
meta_clipboard_manager_init (display);
if (meta_should_autostart_x11_display ())
if (meta_get_x11_display_policy () == META_DISPLAY_POLICY_MANDATORY)
{
if (!meta_display_init_x11 (display, &error))
g_error ("Failed to start Xwayland: %s", error->message);

9
src/core/main-private.h
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@ -30,10 +30,17 @@ typedef enum _MetaCompositorType
META_COMPOSITOR_TYPE_X11,
} MetaCompositorType;
typedef enum _MetaDisplayPolicy
{
META_DISPLAY_POLICY_MANDATORY,
META_DISPLAY_POLICY_ON_DEMAND,
META_DISPLAY_POLICY_DISABLED,
} MetaDisplayPolicy;
META_EXPORT_TEST
void meta_override_compositor_configuration (MetaCompositorType compositor_type,
GType backend_gtype);
gboolean meta_should_autostart_x11_display (void);
MetaDisplayPolicy meta_get_x11_display_policy (void);
#endif /* META_MAIN_PRIVATE_H */

22
src/core/main.c
View File

@ -717,15 +717,27 @@ prefs_changed_callback (MetaPreference pref,
}
}
gboolean
meta_should_autostart_x11_display (void)
MetaDisplayPolicy
meta_get_x11_display_policy (void)
{
MetaBackend *backend = meta_get_backend ();
gboolean wants_x11 = TRUE;
if (META_IS_BACKEND_X11_CM (backend))
return META_DISPLAY_POLICY_MANDATORY;
#ifdef HAVE_WAYLAND
wants_x11 = !opt_no_x11;
if (meta_is_wayland_compositor ())
{
MetaSettings *settings = meta_backend_get_settings (backend);
if (opt_no_x11)
return META_DISPLAY_POLICY_DISABLED;
if (meta_settings_is_experimental_feature_enabled (settings,
META_EXPERIMENTAL_FEATURE_AUTOSTART_XWAYLAND))
return META_DISPLAY_POLICY_ON_DEMAND;
}
#endif
return META_IS_BACKEND_X11_CM (backend) || wants_x11;
return META_DISPLAY_POLICY_MANDATORY;
}

4
src/wayland/meta-wayland.c
View File

@ -418,7 +418,7 @@ meta_wayland_init (void)
meta_wayland_eglstream_controller_init (compositor);
#endif
if (meta_should_autostart_x11_display ())
if (meta_get_x11_display_policy () != META_DISPLAY_POLICY_DISABLED)
{
if (!meta_xwayland_init (&compositor->xwayland_manager, compositor->wayland_display))
g_error ("Failed to start X Wayland");
@ -443,7 +443,7 @@ meta_wayland_init (void)
compositor->display_name = g_strdup (display_name);
}
if (meta_should_autostart_x11_display ())
if (meta_get_x11_display_policy () != META_DISPLAY_POLICY_DISABLED)
{
set_gnome_env ("DISPLAY", meta_wayland_get_xwayland_display_name (compositor));
set_gnome_env ("XAUTHORITY", meta_wayland_get_xwayland_auth_file (compositor));