| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2009 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; |
| } |
| } |