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monitor-manager: check for underscan setting validity upfront

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Instead of doing a roundtrip to the X server before setting it, rely on
the previous value fetched before the configuration was sent over DBus.
This matches the argument check we already do elsewhere, and will allow
us to more easily add an additional condition to determine if underscan
is supported.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/673


(cherry picked from commit 8665084df1)
This commit is contained in:
Cosimo Cecchi 2019-07-04 19:52:30 +00:00 committed by Florian Müllner
parent bf17e04010
commit ff885fea31
1 changed files with 13 additions and 1 deletions
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14
src/backends/meta-monitor-manager.c
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@ -1648,6 +1648,7 @@ create_monitor_config_from_variant (MetaMonitorManager *manager,
MetaMonitorModeSpec *monitor_mode_spec;
g_autoptr (GVariant) properties_variant = NULL;
gboolean enable_underscanning = FALSE;
gboolean set_underscanning = FALSE;
g_variant_get (monitor_config_variant, "(ss@a{sv})",
&connector,
@ -1670,7 +1671,18 @@ create_monitor_config_from_variant (MetaMonitorManager *manager,
return NULL;
}
g_variant_lookup (properties_variant, "underscanning", "b", &enable_underscanning);
set_underscanning =
g_variant_lookup (properties_variant, "underscanning", "b",
&enable_underscanning);
if (set_underscanning)
{
if (enable_underscanning && !meta_monitor_supports_underscanning (monitor))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Underscanning requested but unsupported");
return NULL;
}
}
monitor_spec = meta_monitor_spec_clone (meta_monitor_get_spec (monitor));