1 /* 2 * Copyright (C) 2011 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.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 final class InputView extends LinearLayout { 27 private View mSuggestionStripView; 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(final Context context, final AttributeSet attrs)36 public InputView(final Context context, final AttributeSet attrs) { 37 super(context, attrs, 0); 38 } 39 setKeyboardGeometry(final int keyboardTopPadding)40 public void setKeyboardGeometry(final int keyboardTopPadding) { 41 mKeyboardTopPadding = keyboardTopPadding; 42 } 43 44 @Override onFinishInflate()45 protected void onFinishInflate() { 46 mSuggestionStripView = findViewById(R.id.suggestion_strip_view); 47 mKeyboardView = findViewById(R.id.keyboard_view); 48 } 49 50 @Override dispatchTouchEvent(final MotionEvent me)51 public boolean dispatchTouchEvent(final MotionEvent me) { 52 if (mSuggestionStripView.getVisibility() != VISIBLE 53 || mKeyboardView.getVisibility() != VISIBLE) { 54 return super.dispatchTouchEvent(me); 55 } 56 57 // The touch events that hit the top padding of keyboard should be forwarded to 58 // {@link SuggestionStripView}. 59 final Rect rect = mInputViewRect; 60 this.getGlobalVisibleRect(rect); 61 final int x = (int)me.getX() + rect.left; 62 final int y = (int)me.getY() + rect.top; 63 64 final Rect forwardingRect = mEventForwardingRect; 65 mKeyboardView.getGlobalVisibleRect(forwardingRect); 66 if (!mIsForwardingEvent && !forwardingRect.contains(x, y)) { 67 return super.dispatchTouchEvent(me); 68 } 69 70 final int forwardingLimitY = forwardingRect.top + mKeyboardTopPadding; 71 boolean sendToTarget = false; 72 73 switch (me.getAction()) { 74 case MotionEvent.ACTION_DOWN: 75 if (y < forwardingLimitY) { 76 // This down event and further move and up events should be forwarded to the target. 77 mIsForwardingEvent = true; 78 sendToTarget = true; 79 } 80 break; 81 case MotionEvent.ACTION_MOVE: 82 sendToTarget = mIsForwardingEvent; 83 break; 84 case MotionEvent.ACTION_UP: 85 case MotionEvent.ACTION_CANCEL: 86 sendToTarget = mIsForwardingEvent; 87 mIsForwardingEvent = false; 88 break; 89 } 90 91 if (!sendToTarget) { 92 return super.dispatchTouchEvent(me); 93 } 94 95 final Rect receivingRect = mEventReceivingRect; 96 mSuggestionStripView.getGlobalVisibleRect(receivingRect); 97 final int translatedX = x - receivingRect.left; 98 final int translatedY; 99 if (y < forwardingLimitY) { 100 // The forwarded event should have coordinates that are inside of the target. 101 translatedY = Math.min(y - receivingRect.top, receivingRect.height() - 1); 102 } else { 103 translatedY = y - receivingRect.top; 104 } 105 me.setLocation(translatedX, translatedY); 106 mSuggestionStripView.dispatchTouchEvent(me); 107 return true; 108 } 109 } 110