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fp-device: Add finger-status property

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It can be used by drivers to report the state of the finger on sensor
This commit is contained in:
Marco Trevisan (Treviño)
2020-03-26 20:49:48 +01:00
committed by Marco Trevisan
parent ae3baadcf9
commit 42e4506b1b
8 changed files with 264 additions and 1 deletions
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56
libfprint/fpi-device.c
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@@ -1394,3 +1394,59 @@ fpi_device_identify_report (FpDevice *device,
if (call_cb && data->match_cb)
data->match_cb (device, data->match, data->print, data->match_data, data->error);
}
/**
* fpi_device_report_finger_status:
* @device: The #FpDevice
* @finger_status: The current #FpFingerStatusFlags to report
*
* Report the finger status for the @device.
* This can be used by UI to give a feedback
*
* Returns: %TRUE if changed
*/
gboolean
fpi_device_report_finger_status (FpDevice *device,
FpFingerStatusFlags finger_status)
{
FpDevicePrivate *priv = fp_device_get_instance_private (device);
g_autofree char *status_string = NULL;
if (priv->finger_status == finger_status)
return FALSE;
status_string = g_flags_to_string (FP_TYPE_FINGER_STATUS_FLAGS, finger_status);
fp_dbg ("Device reported finger status change: %s", status_string);
priv->finger_status = finger_status;
g_object_notify (G_OBJECT (device), "finger-status");
return TRUE;
}
/**
* fpi_device_report_finger_status_changes:
* @device: The #FpDevice
* @added_status: The #FpFingerStatusFlags to add
* @added_status: The #FpFingerStatusFlags to remove
*
* Report the finger status for the @device adding the @added_status flags
* and removing the @removed_status flags.
*
* This can be used by UI to give a feedback
*
* Returns: %TRUE if changed
*/
gboolean
fpi_device_report_finger_status_changes (FpDevice *device,
FpFingerStatusFlags added_status,
FpFingerStatusFlags removed_status)
{
FpDevicePrivate *priv = fp_device_get_instance_private (device);
FpFingerStatusFlags finger_status = priv->finger_status;
finger_status |= added_status;
finger_status &= ~removed_status;
return fpi_device_report_finger_status (device, finger_status);
}