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An Open Source JavaFX PDF Viewer
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2017 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* SamplingFactory.java
* ---------------
*/
package org.jpedal.images;
public class SamplingFactory {
/**do nothing*/
public static int none;
/** medium will make sure images larger than page are reduced in size (often large scanned tiffs)*/
public static final int medium=1;
/** (default setting) high will agressively reduce images bigger than twice their drawn size at 100% so a image
* which appears as 100x100 on the PDF but whose raw images is 250x250 will be stored as 125x125 image
* and not a 250x250 image
*/
public static final int high=2;
/** use down-sampling on printing (which is default) */
public static final int print_enable=3;
/** do not use down-sampling on printing*/
public static final int print_disable=4;
/**current setting - do not set directly*/
public static int downsampleLevel=high;
/**current setting - do not set directly*/
public static boolean isPrintDownsampleEnabled=true;
/**
* PDFs contain images which may often be much larger than the actual space they occupy and they are reduced to fit the space
* alters image sampling to speed up program and reduce memory in with the strategies "high","medium", "none", "enable_printing", "disable_printing"
*
* @param newLevel A String value of image sampling strategies
*/
public static void setDownsampleMode(String newLevel){
if(newLevel==null) {
newLevel = System.getProperty("org.jpedal.downsample");
}
if(newLevel!=null){
if(newLevel.equals("high") || newLevel.equals("\"high\"")) {
downsampleLevel = high;
} else if(newLevel.equals("medium") || newLevel.equals("\"medium\"")) {
downsampleLevel = medium;
} else if(newLevel.equals("none") || newLevel.equals("\"none\"")) {
downsampleLevel = none;
} else if(newLevel.equals("print_disable") || newLevel.equals("\"print_disable\"")) {
isPrintDownsampleEnabled = false;
} else if(newLevel.equals("print_enable")|| newLevel.equals("\"print_enable\"")) {
isPrintDownsampleEnabled = true;
}
}
}
/**
* PDFs contain images which may often be much larger than the actual space they occupy and they are reduced to fit the space
* alters image sampling to speed up program and reduce memory with the strategies high, medium, none, enable_printing, disable_printing
*
* @param newLevel A String value of image sampling strategies
*/
@SuppressWarnings("UnusedDeclaration")
public static void setDownsampleMode(final int newLevel){
if(newLevel==high || newLevel==medium || newLevel==none) {
downsampleLevel = newLevel;
} else if(newLevel==print_disable) {
isPrintDownsampleEnabled = false;
} else if(newLevel==print_enable) {
isPrintDownsampleEnabled = true;
}
}
}