61 lines
1.8 KiB
Java
61 lines
1.8 KiB
Java
/*
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Yaaic - Yet Another Android IRC Client
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Copyright 2009-2011 Sebastian Kaspari
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This file is part of Yaaic.
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Yaaic is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Yaaic is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Yaaic. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.yaaic.view;
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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.Gallery;
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/**
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* Conversation gallery for horizontal scrolling
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*
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* @author Thomas Martitz
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*/
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public class ConversationGallery extends Gallery
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{
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/**
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* Create a new conversation gallery
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*
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* @param context
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* @param attrs
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*/
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public ConversationGallery(Context context, AttributeSet attrs)
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{
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super(context, attrs);
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}
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/**
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* On Fling: Reduce sensitivity of the channel gallery view
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*/
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@Override
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public boolean onFling (MotionEvent e1, MotionEvent e2, float velocityX, float velocityY)
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{
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/* Reduce sensitivity based on f(x) = x * 0.925^y with y = (|x/500| - 1)
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* The goal is to reduce higher velocities stronger than low ones
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* 500 is the base, i.e. it will not reduced. */
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final float fexp = Math.abs(velocityX / 500.0f) - 1;
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velocityX *= Math.pow(0.925, fexp);
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return super.onFling(e1, e2, velocityX, velocityY);
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}
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}
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