1 /* 2 * Copyright (C) 2018 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 com.android.systemui.recents; 18 19 import android.graphics.Outline; 20 import android.graphics.Path; 21 import android.graphics.drawable.shapes.PathShape; 22 import android.support.annotation.NonNull; 23 24 /** 25 * Wrapper around {@link android.graphics.drawable.shapes.PathShape} 26 * that creates a shape with a triangular path (pointing up or down). 27 */ 28 public class TriangleShape extends PathShape { 29 private Path mTriangularPath; 30 TriangleShape(Path path, float stdWidth, float stdHeight)31 public TriangleShape(Path path, float stdWidth, float stdHeight) { 32 super(path, stdWidth, stdHeight); 33 mTriangularPath = path; 34 } 35 create(float width, float height, boolean isPointingUp)36 public static TriangleShape create(float width, float height, boolean isPointingUp) { 37 Path triangularPath = new Path(); 38 if (isPointingUp) { 39 triangularPath.moveTo(0, height); 40 triangularPath.lineTo(width, height); 41 triangularPath.lineTo(width / 2, 0); 42 triangularPath.close(); 43 } else { 44 triangularPath.moveTo(0, 0); 45 triangularPath.lineTo(width / 2, height); 46 triangularPath.lineTo(width, 0); 47 triangularPath.close(); 48 } 49 return new TriangleShape(triangularPath, width, height); 50 } 51 52 @Override getOutline(@onNull Outline outline)53 public void getOutline(@NonNull Outline outline) { 54 outline.setConvexPath(mTriangularPath); 55 } 56 } 57