org.jpedal.parser.swing.PDFtoImageConvertorSwing Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of OpenViewerFX Show documentation
Show all versions of OpenViewerFX Show documentation
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
*
* ---------------
* PDFtoImageConvertorSwing.java
* ---------------
*/
package org.jpedal.parser.swing;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import org.jpedal.objects.PdfPageData;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import org.jpedal.color.ColorSpaces;
import org.jpedal.exception.PdfException;
import org.jpedal.render.*;
import org.jpedal.io.ObjectStore;
import org.jpedal.objects.acroforms.AcroRenderer;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.parser.*;
public class PDFtoImageConvertorSwing extends PDFtoImageConvertor{
public PDFtoImageConvertorSwing(final float multiplyer, final DecoderOptions options) {
super(multiplyer,options);
}
@Override
public DynamicVectorRenderer getDisplay(final int pageIndex, final ObjectStore localStore,boolean isTransparent) {
return imageDisplay = new ImageDisplay(pageIndex,!isTransparent, 5000, localStore); //note !isTransparent as actually addBackground
}
public static AffineTransform setPageParametersForImage(final float scaling, final int pageNumber, final PdfPageData pageData) {
//create scaling factor to use
final AffineTransform imageScaling = new AffineTransform();
final int crw = pageData.getCropBoxWidth(pageNumber);
final int crh = pageData.getCropBoxHeight(pageNumber);
final int crx = pageData.getCropBoxX(pageNumber);
final int cry = pageData.getCropBoxY(pageNumber);
final int image_x_size =(int) ((crw)*scaling);
final int image_y_size =(int) ((crh)*scaling);
final int raw_rotation = pageData.getRotation(pageNumber);
imageScaling.translate(-crx*scaling,+cry*scaling);
if (raw_rotation == 270) {
imageScaling.rotate(-Math.PI / 2.0, image_x_size/ 2, image_y_size / 2);
final double x_change = (imageScaling.getTranslateX());
final double y_change = (imageScaling.getTranslateY());
imageScaling.translate((image_y_size - y_change), -x_change);
if(cry<0){
imageScaling.translate(2*cry*scaling,2*cry*scaling);
}else{
imageScaling.translate(2*cry*scaling,0);
}
imageScaling.translate(0,-scaling*(pageData.getCropBoxHeight(pageNumber)-pageData.getMediaBoxHeight(pageNumber)));
} else if (raw_rotation == 180) {
imageScaling.rotate(Math.PI, image_x_size / 2, image_y_size / 2);
} else if (raw_rotation == 90) {
imageScaling.rotate(Math.PI / 2.0, image_x_size / 2, image_y_size / 2);
final double x_change =(imageScaling.getTranslateX());
final double y_change = (imageScaling.getTranslateY());
imageScaling.translate(-y_change, image_x_size - x_change);
}
imageScaling.translate(image_x_size, image_y_size);
imageScaling.scale(1, -1);
imageScaling.translate(-image_x_size, 0);
imageScaling.scale(scaling,scaling);
return imageScaling;
}
@Override
public BufferedImage pageToImage(final boolean imageIsTransparent, final PdfStreamDecoder currentImageDecoder, final float scaling,
final PdfObject pdfObject,final AcroRenderer formRenderer) throws PdfException {
final BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
final Graphics graphics = image.getGraphics();
final Graphics2D g2 = (Graphics2D) graphics;
if (!imageIsTransparent) {
g2.setColor(Color.white);
g2.fillRect(0, 0, w, h);
}
/**
* adjustment for upside down images
*/
if(rotation==180){
g2.translate(crx*2*multiplyer, -(cry*2*multiplyer));
}
/**
* pass in values as needed for patterns
*/
imageDisplay.setScalingValues(crx*multiplyer, (crh*multiplyer) + cry, multiplyer*scaling);
g2.setRenderingHints(ColorSpaces.hints);
g2.transform(imageScaling);
if (rotated){
if(rotation==90){//90
if(multiplyer<1){
cry = (int)(imageScaling.getTranslateX() + cry);
crx = (int)(imageScaling.getTranslateY() + crx);
}else{
cry = (int)((imageScaling.getTranslateX()/multiplyer) + cry);
crx = (int)((imageScaling.getTranslateY()/multiplyer) + crx);
}
crx /= scaling;
cry /= scaling;
g2.translate(-crx, -cry);
}else{ //270
if(cry<0) {
g2.translate(-(crx/scaling), (mediaH - crh + cry)/scaling);
} else {
g2.translate(-(crx/scaling), (mediaH - crh - cry)/scaling);
}
}
}
/** decode and print in 1 go */
currentImageDecoder.setObjectValue(ValueTypes.DirectRendering, g2);//(Graphics2D) graphics);
imageDisplay.setG2(g2);
currentImageDecoder.decodePageContent(pdfObject);
g2.setClip(null);
return image;
}
}