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 23 import androidx.annotation.NonNull; 24 25 /** 26 * Wrapper around {@link android.graphics.drawable.shapes.PathShape} 27 * that creates a shape with a triangular path (pointing up or down). 28 */ 29 public class TriangleShape extends PathShape { 30 private Path mTriangularPath; 31 32 public TriangleShape(Path path, float stdWidth, float stdHeight) { 33 super(path, stdWidth, stdHeight); 34 mTriangularPath = path; 35 } 36 37 public static TriangleShape create(float width, float height, boolean isPointingUp) { 38 Path triangularPath = new Path(); 39 if (isPointingUp) { 40 triangularPath.moveTo(0, height); 41 triangularPath.lineTo(width, height); 42 triangularPath.lineTo(width / 2, 0); 43 triangularPath.close(); 44 } else { 45 triangularPath.moveTo(0, 0); 46 triangularPath.lineTo(width / 2, height); 47 triangularPath.lineTo(width, 0); 48 triangularPath.close(); 49 } 50 return new TriangleShape(triangularPath, width, height); 51 } 52 53 /** Create an arrow TriangleShape that points to the left or the right */ 54 public static TriangleShape createHorizontal( 55 float width, float height, boolean isPointingLeft) { 56 Path triangularPath = new Path(); 57 if (isPointingLeft) { 58 triangularPath.moveTo(0, height / 2); 59 triangularPath.lineTo(width, height); 60 triangularPath.lineTo(width, 0); 61 triangularPath.close(); 62 } else { 63 triangularPath.moveTo(0, height); 64 triangularPath.lineTo(width, height / 2); 65 triangularPath.lineTo(0, 0); 66 triangularPath.close(); 67 } 68 return new TriangleShape(triangularPath, width, height); 69 } 70 71 @Override 72 public void getOutline(@NonNull Outline outline) { 73 outline.setConvexPath(mTriangularPath); 74 } 75 } 76
