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authorJustin Klaassen <justinklaassen@google.com>2018-04-15 00:41:15 -0400
committerJustin Klaassen <justinklaassen@google.com>2018-04-15 00:41:15 -0400
commitb8042fc9b036db0a6692ca853428fc6ab1e60892 (patch)
tree82669ea5d75238758e22d379a42baeada526219e /android/hardware/display/DisplayManagerGlobal.java
parent4d01eeaffaa720e4458a118baa137a11614f00f7 (diff)
downloadandroid-28-androidx-preference-release.tar.gz
/google/data/ro/projects/android/fetch_artifact \ --bid 4719250 \ --target sdk_phone_armv7-win_sdk \ sdk-repo-linux-sources-4719250.zip AndroidVersion.ApiLevel has been modified to appear as 28 Change-Id: I9ec0a12c9251b8449dba0d86b0cfdbcca16b0a7c
Diffstat (limited to 'android/hardware/display/DisplayManagerGlobal.java')
-rw-r--r--android/hardware/display/DisplayManagerGlobal.java19
1 files changed, 19 insertions, 0 deletions
diff --git a/android/hardware/display/DisplayManagerGlobal.java b/android/hardware/display/DisplayManagerGlobal.java
index 2d0ef2f2..d968a3e9 100644
--- a/android/hardware/display/DisplayManagerGlobal.java
+++ b/android/hardware/display/DisplayManagerGlobal.java
@@ -31,6 +31,7 @@ import android.os.RemoteException;
import android.os.ServiceManager;
import android.text.TextUtils;
import android.util.Log;
+import android.util.Pair;
import android.util.SparseArray;
import android.view.Display;
import android.view.DisplayAdjustments;
@@ -563,6 +564,24 @@ public final class DisplayManagerGlobal {
}
/**
+ * Returns the minimum brightness curve, which guarantess that any brightness curve that dips
+ * below it is rejected by the system.
+ * This prevent auto-brightness from setting the screen so dark as to prevent the user from
+ * resetting or disabling it, and maps lux to the absolute minimum nits that are still readable
+ * in that ambient brightness.
+ *
+ * @return The minimum brightness curve (as lux values and their corresponding nits values).
+ */
+ public Pair<float[], float[]> getMinimumBrightnessCurve() {
+ try {
+ Curve curve = mDm.getMinimumBrightnessCurve();
+ return Pair.create(curve.getX(), curve.getY());
+ } catch (RemoteException ex) {
+ throw ex.rethrowFromSystemServer();
+ }
+ }
+
+ /**
* Retrieves ambient brightness stats.
*/
public List<AmbientBrightnessDayStats> getAmbientBrightnessStats() {