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