/*
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* ProGuard -- shrinking, optimization, obfuscation, and preverification
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* of Java bytecode.
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*
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* Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package proguard.gui.splash;
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/**
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* This VariableString produces a String that grows linearly with respect to its
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* Timing, as if it is being written on a typewriter. A cursor at the end
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* precedes the typed characters.
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*
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* @author Eric Lafortune
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*/
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public class TypeWriterString implements VariableString
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{
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private final String string;
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private final Timing timing;
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private int cachedLength = -1;
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private String cachedString;
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/**
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* Creates a new TypeWriterString.
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* @param string the basic String.
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* @param timing the applied timing.
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*/
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public TypeWriterString(String string, Timing timing)
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{
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this.string = string;
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this.timing = timing;
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}
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// Implementation for VariableString.
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public String getString(long time)
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{
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double t = timing.getTiming(time);
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int stringLength = string.length();
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int length = (int)(stringLength * t + 0.5);
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if (length != cachedLength)
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{
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cachedLength = length;
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cachedString = string.substring(0, length);
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if (t > 0.0 && length < stringLength)
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{
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cachedString += "_";
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}
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}
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return cachedString;
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}
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}
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