| /* |
| * Copyright (C) 2013 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.android.colorpicker; |
| |
| import android.graphics.Color; |
| |
| import java.util.Comparator; |
| |
| /** |
| * A color comparator which compares based on hue, saturation, and value. |
| */ |
| public class HsvColorComparator implements Comparator<Integer> { |
| |
| @Override |
| public int compare(Integer lhs, Integer rhs) { |
| float[] hsv = new float[3]; |
| Color.colorToHSV(lhs, hsv); |
| float hue1 = hsv[0]; |
| float sat1 = hsv[1]; |
| float val1 = hsv[2]; |
| |
| float[] hsv2 = new float[3]; |
| Color.colorToHSV(rhs, hsv2); |
| float hue2 = hsv2[0]; |
| float sat2 = hsv2[1]; |
| float val2 = hsv2[2]; |
| |
| if (hue1 < hue2) { |
| return 1; |
| } else if (hue1 > hue2) { |
| return -1; |
| } else { |
| if (sat1 < sat2) { |
| return 1; |
| } else if (sat1 > sat2) { |
| return -1; |
| } else { |
| if (val1 < val2) { |
| return 1; |
| } else if (val1 > val2) { |
| return -1; |
| } |
| } |
| } |
| return 0; |
| } |
| } |