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monitor-manager: add a property to discover if underscan is supported

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So that clients such as the control center can decide to hide an
underscanning checkbutton when the output does not support it.

Support in the KMS / native backend to come later...
This commit is contained in:
Cosimo Cecchi 2015-07-01 17:42:46 -07:00 committed by Jasper St. Pierre
parent 91b7dedf36
commit 94bce5a00f
3 changed files with 49 additions and 0 deletions
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1
src/backends/meta-monitor-manager-private.h
View File

@ -145,6 +145,7 @@ struct _MetaOutput
gboolean is_primary;
gboolean is_presentation;
gboolean is_underscanning;
gboolean supports_underscanning;
gpointer driver_private;
GDestroyNotify driver_notify;

2
src/backends/meta-monitor-manager.c
View File

@ -647,6 +647,8 @@ meta_monitor_manager_handle_get_resources (MetaDBusDisplayConfig *skeleton,
g_variant_new_string (get_connector_type_name (output->connector_type)));
g_variant_builder_add (&properties, "{sv}", "underscanning",
g_variant_new_boolean (output->is_underscanning));
g_variant_builder_add (&properties, "{sv}", "supports-underscanning",
g_variant_new_boolean (output->supports_underscanning));
edid_file = manager_class->get_edid_file (manager, output);
if (edid_file)

46
src/backends/x11/meta-monitor-manager-xrandr.c
View File

@ -246,6 +246,51 @@ output_get_underscanning_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
return (strcmp (str, "on") == 0);
}
static gboolean
output_get_supports_underscanning_xrandr (MetaMonitorManagerXrandr *manager_xrandr,
MetaOutput *output)
{
Atom atom, actual_type;
int actual_format, i;
unsigned long nitems, bytes_after;
g_autofree unsigned char *buffer = NULL;
XRRPropertyInfo *property_info;
Atom *values;
gboolean supports_underscanning = FALSE;
atom = XInternAtom (manager_xrandr->xdisplay, "underscan", False);
XRRGetOutputProperty (manager_xrandr->xdisplay,
(XID)output->winsys_id,
atom,
0, G_MAXLONG, False, False, XA_ATOM,
&actual_type, &actual_format,
&nitems, &bytes_after, &buffer);
if (actual_type != XA_ATOM || actual_format != 32 || nitems < 1)
return FALSE;
property_info = XRRQueryOutputProperty (manager_xrandr->xdisplay,
(XID) output->winsys_id,
atom);
values = (Atom *) property_info->values;
for (i = 0; i < property_info->num_values; i++)
{
/* The output supports underscanning if "on" is a valid value
* for the underscan property.
*/
char *name = XGetAtomName (manager_xrandr->xdisplay, values[i]);
if (strcmp (name, "on") == 0)
supports_underscanning = TRUE;
XFree (name);
}
XFree (property_info);
return supports_underscanning;
}
static int
normalize_backlight (MetaOutput *output,
int hw_value)
@ -804,6 +849,7 @@ meta_monitor_manager_xrandr_read_current (MetaMonitorManager *manager)
meta_output->is_primary = ((XID)meta_output->winsys_id == primary_output);
meta_output->is_presentation = output_get_presentation_xrandr (manager_xrandr, meta_output);
meta_output->is_underscanning = output_get_underscanning_xrandr (manager_xrandr, meta_output);
meta_output->supports_underscanning = output_get_supports_underscanning_xrandr (manager_xrandr, meta_output);
output_get_backlight_limits_xrandr (manager_xrandr, meta_output);
if (!(meta_output->backlight_min == 0 && meta_output->backlight_max == 0))