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/*
* Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.javafx.iio.common;
/**
* Factory class for creating PushbroomScaler instances.
*/
public class ScalerFactory {
private ScalerFactory() {}
/**
* Instantiates a new PushbroomScaler object.
*
* @param sourceWidth The source image width
* @param sourceHeight The source image height
* @param numBands The number of components per pixel in the images
* @param destWidth The destination image width
* @param destHeight The destination image height
* @throws IllegalArgumentException if any of the integral parameters is non-positive.
*/
public static PushbroomScaler createScaler(int sourceWidth, int sourceHeight, int numBands,
int destWidth, int destHeight, boolean isSmooth) {
if (sourceWidth <= 0 || sourceHeight <= 0 || numBands <= 0 ||
destWidth <= 0 || destHeight <= 0) {
throw new IllegalArgumentException();
}
PushbroomScaler scaler = null;
boolean isMagnifying = destWidth > sourceWidth || destHeight > sourceHeight;
if (isMagnifying) {
if (isSmooth) {
// RT-27408
// TODO: bpb 2009-10-05 Need SmoothMagnifier class; use RoughScaler for now.
scaler = new RoughScaler(sourceWidth, sourceHeight, numBands,
destWidth, destHeight);
} else {
scaler = new RoughScaler(sourceWidth, sourceHeight, numBands,
destWidth, destHeight);
}
} else { // minifying
if (isSmooth) {
scaler = new SmoothMinifier(sourceWidth, sourceHeight, numBands,
destWidth, destHeight);
} else {
scaler = new RoughScaler(sourceWidth, sourceHeight, numBands,
destWidth, destHeight);
}
}
return scaler;
}
}
