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/*
* Copyright (C) 2016 The CyanogenMod Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.cyanogenmod.hardware;
/**
* Color balance support
*
* Color balance controls allow direct adjustment of display color temperature
* using a range of values. A zero implies no adjustment, negative values
* move towards warmer temperatures, and positive values move towards
* cool temperatures.
*/
public class ColorBalance {
private static final boolean sHasNativeSupport =
LiveDisplayVendorImpl.hasNativeFeature(LiveDisplayVendorImpl.COLOR_BALANCE);
/**
* Whether device supports color balance control
*
* @return boolean Supported devices must return always true
*/
public static boolean isSupported() {
return sHasNativeSupport;
}
/**
* This method returns the current color balance value
*
* @return int Zero when no adjustment is made, negative values move
* towards warmer temperatures, positive values move towards cooler temperatures.
*/
public static int getValue() {
if (sHasNativeSupport) {
return LiveDisplayVendorImpl.native_getColorBalance();
}
return 0;
}
/**
* This method allows to set the display color balance
*
* @param value
* @return boolean Must be false if feature is not supported or the operation
* failed; true in any other case.
*/
public static boolean setValue(int value) {
if (sHasNativeSupport) {
return LiveDisplayVendorImpl.native_setColorBalance(value);
}
return false;
}
/**
* Get the minimum allowed color adjustment value
* @return int
*/
public static int getMinValue() {
if (sHasNativeSupport) {
return LiveDisplayVendorImpl.native_getColorBalanceRange().getLower();
}
return 0;
}
/**
* Get the maximum allowed color adjustment value
* @return int
*/
public static int getMaxValue() {
if (sHasNativeSupport) {
return LiveDisplayVendorImpl.native_getColorBalanceRange().getUpper();
}
return 0;
}
}
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