1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.graphics; 18 19 public class SweepGradient extends Shader { 20 21 /** 22 * A subclass of Shader that draws a sweep gradient around a center point. 23 * 24 * @param cx The x-coordinate of the center 25 * @param cy The y-coordinate of the center 26 * @param colors The colors to be distributed between around the center. 27 * There must be at least 2 colors in the array. 28 * @param positions May be NULL. The relative position of 29 * each corresponding color in the colors array, beginning 30 * with 0 and ending with 1.0. If the values are not 31 * monotonic, the drawing may produce unexpected results. 32 * If positions is NULL, then the colors are automatically 33 * spaced evenly. 34 */ SweepGradient(float cx, float cy, int colors[], float positions[])35 public SweepGradient(float cx, float cy, 36 int colors[], float positions[]) { 37 if (colors.length < 2) { 38 throw new IllegalArgumentException("needs >= 2 number of colors"); 39 } 40 if (positions != null && colors.length != positions.length) { 41 throw new IllegalArgumentException( 42 "color and position arrays must be of equal length"); 43 } 44 45 // FIXME Implement shader 46 } 47 48 /** 49 * A subclass of Shader that draws a sweep gradient around a center point. 50 * 51 * @param cx The x-coordinate of the center 52 * @param cy The y-coordinate of the center 53 * @param color0 The color to use at the start of the sweep 54 * @param color1 The color to use at the end of the sweep 55 */ SweepGradient(float cx, float cy, int color0, int color1)56 public SweepGradient(float cx, float cy, int color0, int color1) { 57 // FIXME Implement shader 58 } 59 } 60 61