1 /* 2 * Copyright (C) 2016 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.example.android.apis.view; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.view.MotionEvent; 22 import android.view.PointerIcon; 23 import android.widget.Button; 24 25 public class SystemPointerIconButton extends Button { 26 27 public SystemPointerIconButton(Context context) { 28 this(context, null); 29 } 30 31 public SystemPointerIconButton(Context context, AttributeSet attrs) { 32 super(context, attrs); 33 } 34 35 public SystemPointerIconButton(Context context, AttributeSet attrs, int defStyleAttr) { 36 super(context, attrs, defStyleAttr); 37 } 38 39 public SystemPointerIconButton(Context context, AttributeSet attrs, 40 int defStyleAttr, int defStyleRes) { 41 super(context, attrs, defStyleAttr, defStyleRes); 42 } 43 44 @Override 45 public PointerIcon onResolvePointerIcon(MotionEvent event, int pointerIndex) { 46 final int minX = getWidth() / 4; 47 final int maxX = getWidth() - minX; 48 final int minY = getHeight() / 4; 49 final int maxY = getHeight() - minY; 50 final float x = event.getX(pointerIndex); 51 final float y = event.getY(pointerIndex); 52 int type; 53 if ((x < minX && y < minY) || (x > maxX && y > maxY)) { 54 // Top/left or bottom/right corner. 55 type = PointerIcon.TYPE_TOP_LEFT_DIAGONAL_DOUBLE_ARROW; 56 } else if ((x < minX && y > maxY) || (x > maxX && y < minY)) { 57 // Top/rightor bottom/left corner. 58 type = PointerIcon.TYPE_TOP_RIGHT_DIAGONAL_DOUBLE_ARROW; 59 } else if (x < minX || x > maxX) { 60 // Left or right edge. 61 type = PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW; 62 } else if (y < minY || y > maxY) { 63 // Top or bottom edge edge. 64 type = PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW; 65 } else { 66 // Everything else (the middle). 67 type = PointerIcon.TYPE_ALL_SCROLL; 68 } 69 return PointerIcon.getSystemIcon(getContext(), type); 70 } 71 } 72
