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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
*
* ---------------
* SMask.java
* ---------------
*/
package org.jpedal.parser.image;
import org.jpedal.io.ColorSpaceConvertor;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
/**
*
*/
public class SMask {
static final int[] transparentPixel={0,0,0,0};
/**
* apply soft mask
**/
public static BufferedImage applySmask(BufferedImage image, BufferedImage smask, final boolean isRGB) {
if(smask==null){
return image;
}
//we assume in image pixel comparison we are using type 2
if(smask.getType()==12) {
smask = ColorSpaceConvertor.convertToARGB(smask);
}
final boolean debug=false;
if(debug){
System.out.println("image="+image);
System.out.println("smask="+smask);
}
boolean maybeFourBit=true;
final Raster mask=smask.getRaster();
WritableRaster imgRas=null;
boolean isConverted=false;
/**
* allow for scaled mask
*/
int imageW=image.getWidth();
int imageH=image.getHeight();
int smaskW=smask.getWidth();
int smaskH=smask.getHeight();
final boolean isRotated=((imageW>imageH && smaskWsmaskH));
if(isRotated){
smaskH=smask.getWidth();
smaskW=smask.getHeight();
}
float ratioW=0,ratioH=0;
if(!isRotated &&(imageW!=smaskW || imageH!=smaskH)){
ratioW=(float)imageW/(float)smaskW;
ratioH=(float)imageH/(float)smaskH;
//resize if half size to improve image quality on RGB
if(isRGB && ratioW==0.5 && ratioH==0.5){
final BufferedImage resizedImage = new BufferedImage(smaskW, smaskH, image.getType());
final Graphics2D g = resizedImage.createGraphics();
g.dispose();
g.setComposite(AlphaComposite.Src);
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.setRenderingHint(RenderingHints.KEY_RENDERING,RenderingHints.VALUE_RENDER_QUALITY);
//g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
g.drawImage(image, 0, 0, smaskW, smaskH, null);
image=resizedImage;
imageW=smaskW;
imageH=smaskH;
ratioW=1;
ratioH=1;
}
}
final int colorComponents=smask.getColorModel().getNumComponents();
final int[] values=new int[colorComponents];
final int[] pix=new int[4];
if(debug) {
System.out.println("colorComponents=" + colorComponents + ' ' + isRGB);
}
//apply smask
int line;
final int maskH=mask.getHeight();
for(int y=0;y> "+values[0]+" "+values.length);
// if(values[2]==0 && pix[2]==0 && values[3]==0)
//if(values.length==1){
// if(pix[0]==0 && pix[1]==0 && pix[2]==0)
// imgRas.setPixels(x, y, 1, 1, new int[]{(pix[0]), (pix[1]), (pix[2]),values[0]});
// }else
if(values.length==3){
//If mask values are 0 - 1 then alter 1 to 255 (ms valid in raw PDF but not at this point)
//if(values[0]==1){
// values[0] = 255;
// }
imgRas.setPixels(x, y, 1, 1, new int[]{(pix[0]), (pix[1]), (pix[2]), values[0]});
}else if (colorComponents == 1) {
//some are actually 4 bit like
///PDFdata/test_data/baseline_screens/adobe/PP_download.pdf
//so try to catch here
if(maybeFourBit && values[0]<16 && pix[0]<16 && pix[1]<16 && pix[2]<16) {
imgRas.setPixels(x, y, 1, 1, new int[]{pix[0] * 16, pix[1] * 16, pix[2] * 16, values[0]});
} else{
imgRas.setPixels(x, y, 1, 1, new int[]{ pix[0], pix[1], pix[2], values[0]});
maybeFourBit=false;
}
} else if (values[0] == 0 && values[1] == 0 && values[2] == 0 && values[3] == 0) {
if(pix[3]!=255 && pix[0]==0){
imgRas.setPixels(x, y, 1, 1, transparentPixel);
}
//if(pix[0]==255 && pix[1]==255 && pix[2]==255 && pix[3]==255){
// imgRas.setPixels(x, y, 1, 1, transparentPixel);
// System.out.println(values[0]+" "+values[1]+" "+values[2]+" "+values[3]+" <<>> "+pix[0]+" "+pix[1]+" "+pix[2]+" "+pix[3]);
//}
} else if (pix[0] == 0 && pix[1] == 0 && pix[2] == 0 && pix[3] == 0) {
//if(pix[0]==0 && pix[1]==0 && pix[2]==0 && pix[3]==0){
// imgRas.setPixels(x, y, 1, 1, transparentPixel);
//}else
if (values[0] == 0 && values[1] == 0 && values[2] == 0 && values[3] == 0){
imgRas.setPixels(x, y, 1, 1, transparentPixel);
////@mark
}else if (values[3] == 255) {
// System.out.println(values[0]+" "+"<>"+values[0]+" "+values[1]+" "+values[2]+" "+values[3]);
imgRas.setPixels(x, y, 1, 1,transparentPixel);
// imgRas.setPixels(x, y, 1, 1, transparentPixel);
//}else if (values[3] == 255 && values[0] != 0) {
// imgRas.setPixels(x, y, 1, 1, new int[]{values[0], values[1], values[2], values[0]});
}
//}else if(values.length<4){// && values[0]==0){
//System.out.println(values[0]+" "+"<>"+pix[0]+" "+pix[1]+" "+pix[2]+" "+pix[3]);
// imgRas.setPixels(x,y,1,1,new int[]{(pix[0]),(pix[1]),(pix[2]),values[0]});
} else if (values[3] == 0 && pix[0]!=0 && pix[1]!=0 && pix[2]!=0) {
imgRas.setPixels(x, y, 1, 1, new int[]{(pix[0]), (pix[1]), (pix[2]), 255 - values[0]});
} else {
//System.out.println(values[0]+" "+values[1]+" "+values[2]+" "+values[3]+"<>"+pix[0]+" "+pix[1]+" "+pix[2]+" "+pix[3]);
if (values[0] == 0 && values[1] == 0 && values[2] == 0 && values[3] == 255) {
imgRas.setPixels(x, y, 1, 1, transparentPixel);
}else if (pix[0] == 0 && pix[1] == 0 && pix[2] == 0 && pix[3]<20){ //lose very slight shade in mask
imgRas.setPixels(x, y, 1, 1, transparentPixel);
} else {
if(pix[0]==0 && pix[1]==0 && pix[2]==0 && pix[3]<64){
if(values[0]>pix[3]){
imgRas.setPixels(x, y, 1, 1, new int[]{0,0,0, values[0]-pix[3]});
}else{
imgRas.setPixels(x,y,1,1,transparentPixel);
}
}else if(pix[0]==255 && pix[1]==255 && pix[2]==255 && pix[3]==255){
imgRas.setPixels(x, y, 1, 1, new int[]{(pix[0]), (pix[1]), (pix[2]), values[0]});
// System.out.println(pix[3]);
// imgRas.setPixels(x,y,1,1,new int[]{0,255,0,128});
// System.out.println(values[0]+" "+values[1]+" "+values[2]+" "+values[3]+"<>"+pix[0]+" "+pix[1]+" "+pix[2]+" "+pix[3]);
// imgRas.setPixels(x,y,1,1,transparentPixel);
// imgRas.setPixels(x,y,1,1,new int[]{255,0,0,128});
}else if(values[3]==255 && pix[0]!=0 && pix[1]!=0 && pix[2]!=0 && values[0]>pix[3]){
// System.out.println(values[0]+" "+values[1]+" "+values[2]+" "+values[3]+"<>"+pix[0]+" "+pix[1]+" "+pix[2]+" "+pix[3]);
// imgRas.setPixels(x, y, 1, 1, new int[]{(pix[0]), (pix[1]), (pix[2]), values[0]});
// imgRas.setPixels(x,y,1,1,new int[]{0,255,0,128});
}else{
imgRas.setPixels(x, y, 1, 1, new int[]{(pix[0]), (pix[1]), (pix[2]), values[0]});
// imgRas.setPixels(x,y,1,1,new int[]{0,255,0,128});
// System.out.println(values[0]+" "+values[1]+" "+values[2]+" "+values[3]+"<>"+pix[0]+" "+pix[1]+" "+pix[2]+" "+pix[3]);
}
//System.out.println(values[0]+" "+values[1]+" "+values[2]+" "+values[3]+"<>"+pix[0]+" "+pix[1]+" "+pix[2]+" "+pix[3]);
// imgRas.setPixels(x,y,1,1,new int[]{255,0,0,128});
}
}
}
}
return image;
}
}