Use the physical location of the power button for the power button animation.

    <dimen name="rounded_slider_track_width">8dp</dimen>

    <!-- rounded_slider_track_width / 2 -->

    <dimen name="rounded_slider_track_corner_radius">4dp</dimen>

    <!-- Location on the screen of the center of the physical power button. This is a reasonable

    default that should be overridden by device-specific overlays. -->

    <dimen name="physical_power_button_center_screen_location_y">620px</dimen>

    <!-- Location on the screen of the center of the physical volume up/down buttons. This is a

    reasonable default that should be overridden by device-specific overlays. -->

    <dimen name="physical_volume_up_button_center_screen_location_y">950px</dimen>

    <dimen name="physical_volume_down_button_center_screen_location_y">1150px</dimen>

    <!-- Location on the screen of the center of the fingerprint sensor. For devices with under

     display fingerprint sensors, this directly corresponds to the fingerprint sensor's location.

     For devices with sensors on the back of the device, this corresponds to the location on the

     screen directly in front of the sensor. -->

    <dimen name="physical_fingerprint_sensor_center_screen_location_y">610px</dimen>

</resources>

        }

        mPowerButtonReveal = new PowerButtonReveal(mContext.getResources().getDimensionPixelSize(

                R.dimen.global_actions_top_padding));

                com.android.systemui.R.dimen.physical_power_button_center_screen_location_y));

    }

    // Visibility reporting