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/*
* Copyright 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.batchstepsensor.cardstream;
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.ViewConfiguration;
import android.widget.RelativeLayout;
/**
* Custom Button with a special 'pressed' effect for touch events.
*/
public class CardLayout extends RelativeLayout {
private boolean mSwiping = false;
private float mDownX = 0.f;
private float mDownY = 0.f;
private float mTouchSlop = 0.f;
public CardLayout(Context context) {
super(context);
init();
}
public CardLayout(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public CardLayout(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
private void init(){
setFocusable(true);
setDescendantFocusability(FOCUS_AFTER_DESCENDANTS);
setWillNotDraw(false);
setClickable(true);
mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop() * 2.f;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
switch(event.getAction()){
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
mSwiping = false;
break;
}
return super.onTouchEvent(event);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
switch(event.getAction()){
case MotionEvent.ACTION_MOVE:
if( !mSwiping ){
mSwiping = Math.abs(mDownX - event.getX()) > mTouchSlop;
}
break;
case MotionEvent.ACTION_DOWN:
mDownX = event.getX();
mDownY = event.getY();
mSwiping = false;
break;
case MotionEvent.ACTION_CANCEL:
case MotionEvent.ACTION_UP:
mSwiping = false;
break;
}
return mSwiping;
}
}