Winson Chung
45e1d6ec0a
- Disallowing touch handling when there are no children Change-Id: I925d6f1f862f8c7994a80c4eaacc80f8d59f6ab2
72 lines
2.4 KiB
Java
72 lines
2.4 KiB
Java
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher2;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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import android.widget.LinearLayout;
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/**
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* The linear layout used strictly for the widget/wallpaper tab of the customization tray
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*/
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public class PagedViewExtendedLayout extends LinearLayout {
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static final String TAG = "PagedViewWidgetLayout";
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public PagedViewExtendedLayout(Context context) {
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this(context, null);
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}
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public PagedViewExtendedLayout(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public PagedViewExtendedLayout(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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// We eat up the touch events here, since the PagedView (which uses the same swiping
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// touch code as Workspace previously) uses onInterceptTouchEvent() to determine when
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// the user is scrolling between pages. This means that if the pages themselves don't
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// handle touch events, it gets forwarded up to PagedView itself, and it's own
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// onTouchEvent() handling will prevent further intercept touch events from being called
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// (it's the same view in that case). This is not ideal, but to prevent more changes,
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// we just always mark the touch event as handled.
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return super.onTouchEvent(event) || true;
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}
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@Override
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protected boolean onSetAlpha(int alpha) {
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return true;
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}
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@Override
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public void setAlpha(float alpha) {
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setChildrenAlpha(alpha);
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super.setAlpha(alpha);
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}
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private void setChildrenAlpha(float alpha) {
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final int childCount = getChildCount();
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for (int i = 0; i < childCount; i++) {
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getChildAt(i).setAlpha(alpha);
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}
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}
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}
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