1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * 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, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * the License. 15 */ 16 17 package com.android.inputmethod.latin; 18 19 import android.content.Context; 20 import android.graphics.Rect; 21 import android.util.AttributeSet; 22 import android.view.MotionEvent; 23 import android.view.View; 24 import android.widget.LinearLayout; 25 26 public class InputView extends LinearLayout { 27 private View mSuggestionsContainer; 28 private View mKeyboardView; 29 private int mKeyboardTopPadding; 30 31 private boolean mIsForwardingEvent; 32 private final Rect mInputViewRect = new Rect(); 33 private final Rect mEventForwardingRect = new Rect(); 34 private final Rect mEventReceivingRect = new Rect(); 35 InputView(Context context, AttributeSet attrs)36 public InputView(Context context, AttributeSet attrs) { 37 super(context, attrs, 0); 38 } 39 setKeyboardGeometry(int keyboardTopPadding)40 public void setKeyboardGeometry(int keyboardTopPadding) { 41 mKeyboardTopPadding = keyboardTopPadding; 42 } 43 44 @Override onFinishInflate()45 protected void onFinishInflate() { 46 mSuggestionsContainer = findViewById(R.id.suggestions_container); 47 mKeyboardView = findViewById(R.id.keyboard_view); 48 } 49 50 @Override dispatchTouchEvent(MotionEvent me)51 public boolean dispatchTouchEvent(MotionEvent me) { 52 if (mSuggestionsContainer.getVisibility() == VISIBLE 53 && mKeyboardView.getVisibility() == VISIBLE 54 && forwardTouchEvent(me)) { 55 return true; 56 } 57 return super.dispatchTouchEvent(me); 58 } 59 60 // The touch events that hit the top padding of keyboard should be forwarded to SuggestionsView. forwardTouchEvent(MotionEvent me)61 private boolean forwardTouchEvent(MotionEvent me) { 62 final Rect rect = mInputViewRect; 63 this.getGlobalVisibleRect(rect); 64 final int x = (int)me.getX() + rect.left; 65 final int y = (int)me.getY() + rect.top; 66 67 final Rect forwardingRect = mEventForwardingRect; 68 mKeyboardView.getGlobalVisibleRect(forwardingRect); 69 if (!mIsForwardingEvent && !forwardingRect.contains(x, y)) { 70 return false; 71 } 72 73 final int forwardingLimitY = forwardingRect.top + mKeyboardTopPadding; 74 boolean sendToTarget = false; 75 76 switch (me.getAction()) { 77 case MotionEvent.ACTION_DOWN: 78 if (y < forwardingLimitY) { 79 // This down event and further move and up events should be forwarded to the target. 80 mIsForwardingEvent = true; 81 sendToTarget = true; 82 } 83 break; 84 case MotionEvent.ACTION_MOVE: 85 sendToTarget = mIsForwardingEvent; 86 break; 87 case MotionEvent.ACTION_UP: 88 case MotionEvent.ACTION_CANCEL: 89 sendToTarget = mIsForwardingEvent; 90 mIsForwardingEvent = false; 91 break; 92 } 93 94 if (!sendToTarget) { 95 return false; 96 } 97 98 final Rect receivingRect = mEventReceivingRect; 99 mSuggestionsContainer.getGlobalVisibleRect(receivingRect); 100 final int translatedX = x - receivingRect.left; 101 final int translatedY; 102 if (y < forwardingLimitY) { 103 // The forwarded event should have coordinates that are inside of the target. 104 translatedY = Math.min(y - receivingRect.top, receivingRect.height() - 1); 105 } else { 106 translatedY = y - receivingRect.top; 107 } 108 me.setLocation(translatedX, translatedY); 109 mSuggestionsContainer.dispatchTouchEvent(me); 110 return true; 111 } 112 } 113