1 /* 2 * Copyright (C) 2010 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.videoeditor.widgets; 18 19 import android.view.View; 20 21 /** 22 * A listener for scroll events 23 */ 24 public interface ScrollViewListener { 25 /** 26 * Scroll begin 27 * 28 * @param view The view 29 * @param scrollX The current horizontal position 30 * @param scrollY The current vertical position 31 * @param appScroll true if scroll was initiate in code 32 * (as opposed to by the user) 33 */ 34 public void onScrollBegin(View view, int scrollX, int scrollY, boolean appScroll); 35 36 /** 37 * Scroll in progress 38 * 39 * @param view The view 40 * @param scrollX The current horizontal position 41 * @param scrollY The current vertical position 42 * @param appScroll true if scroll was initiate in code 43 * (as opposed to by the user) 44 */ 45 public void onScrollProgress(View view, int scrollX, int scrollY, boolean appScroll); 46 47 /** 48 * Scroll end 49 * 50 * @param view The view 51 * @param scrollX The current horizontal position 52 * @param scrollY The current vertical position 53 * @param appScroll true if scroll was initiate in code 54 * (as opposed to by the user) 55 */ 56 public void onScrollEnd(View view, int scrollX, int scrollY, boolean appScroll); 57 } 58
