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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 1997-2015 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
*
* ---------------
* DPIFactory.java
* ---------------
*/
package org.jpedal.utils;
public class DPIFactory {
//Current DPI value, Java is 72 by default
private float dpi = 72f;
/**
* Corrects the image scaling to take into account the user specified DPI value
* @param scaling :: Raw scaling value before DPI is applied (DPI of 72 is default)
* @return Corrected scaling in the form of a float
*/
public float adjustScaling(final float scaling) {
return scaling * (dpi/72f);
}
/**
* Corrects the image scaling to take into account the user specified DPI value
* @param scaling :: Raw scaling value before DPI is applied (DPI of 72 is default)
* @return Corrected scaling in the form of a float
*/
public float removeScaling(final float scaling) {
return scaling / (dpi/72f);
}
/**
* Get the current value of the user defined DPI (default = 72)
* @return :: The current DPI value as a float
*/
public float getDpi() {
return dpi;
}
/**
* Sets the current DPI to the input value dpi
* @param dpi :: The new dpi value expressed as a float
*/
public void setDpi(final float dpi) {
this.dpi = dpi;
}
}