darkens the given color to ensure that white text is clearly visible on top of it. - Android Graphics

Android examples for Graphics:Color Value

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Description

darkens the given color to ensure that white text is clearly visible on top of it.

Demo Code

/*//from ww w  .j  av  a2  s.  c  om
 * Copyright (C) 2010 The Android Open Source 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 com.java2s;

import android.graphics.Color;

public class Main {
    private static final float SATURATION_ADJUST = 1.3f;
    private static final float INTENSITY_ADJUST = 0.8f;

    /**
     * For devices with Jellybean or later, darkens the given color to ensure that white text is
     * clearly visible on top of it.  For devices prior to Jellybean, does nothing, as the
     * sync adapter handles the color change.
     *
     * @param color
     */
    public static int getDisplayColorFromColor(int color) {
        float[] hsv = new float[3];
        Color.colorToHSV(color, hsv);
        hsv[1] = Math.min(hsv[1] * SATURATION_ADJUST, 1.0f);
        hsv[2] = hsv[2] * INTENSITY_ADJUST;
        return Color.HSVToColor(hsv);
    }
}

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