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org.jpedal.color.PatternColorSpace Maven / Gradle / Ivy
/*
* ===========================================
* 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
*
* ---------------
* PatternColorSpace.java
* ---------------
*/
package org.jpedal.color;
import com.idrsolutions.pdf.color.shading.ShadedPaint;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.geom.GeneralPath;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import org.jpedal.exception.PdfException;
import org.jpedal.io.ObjectDecoder;
import org.jpedal.io.ObjectStore;
import org.jpedal.io.PdfObjectFactory;
import org.jpedal.io.PdfObjectReader;
import org.jpedal.objects.GraphicsState;
import org.jpedal.objects.raw.PatternObject;
import org.jpedal.objects.raw.PdfArrayIterator;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.objects.raw.ShadingObject;
import org.jpedal.parser.PdfStreamDecoderForPattern;
import org.jpedal.parser.ValueTypes;
import org.jpedal.render.DynamicVectorRenderer;
import org.jpedal.render.RenderUtils;
import org.jpedal.utils.LogWriter;
/**
* handle Pattern ColorSpace (there is also a shading class)
*/
public class PatternColorSpace extends GenericColorSpace {
public static boolean useMemoryEfficentPaint;
boolean newFlag;
//local copy so we can access File data
private final PdfObjectReader currentPdfFile;
private boolean colorsReversed;
PatternObject PatternObj;
final GenericColorSpace patternColorSpace;
float[][] matrix;
PdfPaint strokCol;
/**
* Just initialises variables
*
* @param currentPdfFile
* @param patternColorSpace
*/
public PatternColorSpace(final PdfObjectReader currentPdfFile, final GenericColorSpace patternColorSpace) {
setType(ColorSpaces.Pattern);
this.currentPdfFile = currentPdfFile;
this.patternColorSpace = patternColorSpace;
//default value for color
currentColor = new PdfColor(1.0f, 1.0f, 1.0f);
}
/**
* convert color value to pattern
*/
@Override
public void setColor(final String[] value_loc, final int operandCount) {
if (patternColorSpace != null) {
final int elementCount = value_loc.length - 1;
final String[] colVals = new String[elementCount];
for (int i = 0; i < elementCount; i++) {
colVals[i] = value_loc[elementCount - i];
}
patternColorSpace.setColor(colVals, elementCount);
strokCol = patternColorSpace.getColor();
}
PatternObj = getPatternObjectFromRefOrDirect(currentPdfFile, (byte[]) patterns.get(value_loc[0]));
//lookup table
final byte[] streamData = PatternObj.getDecodedStream();
//type of Pattern (shading or tiling)
final int shadingType = PatternObj.getInt(PdfDictionary.PatternType);
// get optional matrix values
final float[] inputs = PatternObj.getFloatArray(PdfDictionary.Matrix);
if (inputs != null) {
if (shadingType == 1) {
final float[][] Nmatrix = {{inputs[0], inputs[1], 0f}, {inputs[2], inputs[3], 0f}, {0f, 0f, 1f}};
if (!newFlag && inputs[5] < 0) {
inputs[4] = 0;
inputs[5] = 0;
}
matrix = Nmatrix;
} else {
final float[][] Nmatrix = {{inputs[0], inputs[1], 0f}, {inputs[2], inputs[3], 0f}, {inputs[4], inputs[5], 1f}};
colorsReversed = Nmatrix[2][0] < 0;
// matrix=Matrix.multiply(Nmatrix,CTM); //comment out in order to match with spec
matrix = Nmatrix;
}
}
if (!newFlag) {
if (shadingType == 1) { //tiling
currentColor = setupTilingNew(PatternObj, streamData);
} else if (shadingType == 2) { //shading
currentColor = setupShading(PatternObj, matrix);
}
}
}
static PatternObject getPatternObjectFromRefOrDirect(final PdfObjectReader currentPdfFile, final byte[] data) {
final PatternObject colObj = new PatternObject(new String(data));
if (data[0] == '<') {
colObj.setStatus(PdfObject.UNDECODED_DIRECT);
} else {
colObj.setStatus(PdfObject.UNDECODED_REF);
}
colObj.setUnresolvedData(data, PdfDictionary.Pattern);
final ObjectDecoder objectDecoder = new ObjectDecoder(currentPdfFile.getObjectReader());
objectDecoder.checkResolved(colObj);
return colObj;
}
public BufferedImage getImageForPatternedShape(final GraphicsState gs) {
float mm[][] = gs.CTM;
final AffineTransform gsAffine = new AffineTransform(mm[0][0], mm[0][1], mm[1][0], mm[1][1], mm[2][0], mm[2][1]);
final byte[] streamData = currentPdfFile.readStream(PatternObj, true, true, true, false, false, PatternObj.getCacheName(currentPdfFile.getObjectReader()));
final int patternType = PatternObj.getInt(PdfDictionary.PatternType);
if (patternType != 1) { //currently support only tiling, shading pattern not supported yet
return null;
}
AffineTransform affine = new AffineTransform();
final float[] inputs = PatternObj.getFloatArray(PdfDictionary.Matrix);
if (inputs != null) {
mm = new float[][]{{inputs[0], inputs[1], 0f}, {inputs[2], inputs[3], 0f}, {inputs[4], inputs[5], 1f}};
affine = new AffineTransform(mm[0][0], mm[0][1], mm[1][0], mm[1][1], mm[2][0], mm[2][1]);
}
affine.concatenate(gsAffine);
mm = getMatrix(affine);
final boolean isRotated = affine.getShearX() != 0 || affine.getShearY() != 0;
if (isRotated) {
affine = new AffineTransform();
mm = new float[][]{{1f, 0f, 0f}, {0f, 1f, 0f}, {0f, 0f, 1f}};
}
final float[] rawBBox = PatternObj.getFloatArray(PdfDictionary.BBox);
final float xGap = Math.abs(rawBBox[2] - rawBBox[0]);
final float yGap = Math.abs(rawBBox[1] - rawBBox[3]);
final GeneralPath rawPath = new GeneralPath();
rawPath.moveTo(rawBBox[0], rawBBox[1]);
rawPath.lineTo(rawBBox[2], rawBBox[1]);
rawPath.lineTo(rawBBox[2], rawBBox[3]);
rawPath.lineTo(rawBBox[0], rawBBox[3]);
rawPath.lineTo(rawBBox[0], rawBBox[1]);
rawPath.closePath();
final Shape rawShape = rawPath.createTransformedShape(affine);
final Rectangle2D rawRect = rawShape.getBounds2D();
float rawXStep = PatternObj.getFloatNumber(PdfDictionary.XStep);
rawXStep = (30000 > Short.MAX_VALUE || rawXStep < -30000) ? 0f : rawXStep;
float rawYStep = PatternObj.getFloatNumber(PdfDictionary.YStep);
rawYStep = (30000 > Short.MAX_VALUE || rawYStep < -30000) ? 0f : rawYStep;
final float[] bbox = new float[4];
if (rawXStep < 0) {
bbox[2] = xGap - rawXStep;
} else {
bbox[2] = rawXStep;
}
if (rawYStep < 0) {
bbox[3] = yGap - rawYStep;
} else {
bbox[3] = rawYStep;
}
final GeneralPath boxPath = new GeneralPath();
boxPath.moveTo(bbox[0], bbox[1]);
boxPath.lineTo(bbox[2], bbox[1]);
boxPath.lineTo(bbox[2], bbox[3]);
boxPath.lineTo(bbox[0], bbox[3]);
boxPath.lineTo(bbox[0], bbox[1]);
boxPath.closePath();
final Shape boxShape = boxPath.createTransformedShape(affine);
final Rectangle2D boxRect = boxShape.getBounds2D();
double imageW = (Math.abs(boxRect.getX()) + boxRect.getWidth()) - (Math.abs(rawRect.getX()));
double imageH = (Math.abs(boxRect.getY()) + boxRect.getHeight()) - (Math.abs(rawRect.getY()));
imageW = rawXStep == 0 ? rawRect.getWidth() : imageW;
imageH = rawYStep == 0 ? rawRect.getWidth() : imageH;
imageW = imageW > 3000 ? 1500 : imageW;
imageH = imageH > 3000 ? 1500 : imageH;
int iw = (int) (imageW);
iw = iw < 1 ? 1 : iw;
int ih = (int) (imageH);
ih = ih < 1 ? 1 : ih;
if (imageH < 1 && imageW < 2.5) {
iw = 1;
}
final ObjectStore localStore = new ObjectStore();
final BufferedImage image;
final DynamicVectorRenderer glyphDisplay;
// iw = 1000;
// ih = 1000;
if (affine.getScaleX() < 0 || affine.getScaleY() < 0) {
glyphDisplay = decodePatternContent(PatternObj, mm, streamData, localStore);
image = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_ARGB);
final Graphics2D g2 = image.createGraphics();
glyphDisplay.setG2(g2);
final AffineTransform moveAffine = new AffineTransform();
moveAffine.setToTranslation(-rawRect.getX(), -rawRect.getY());
glyphDisplay.paint(null, moveAffine, null);
} else {
glyphDisplay = decodePatternContent(PatternObj, null, streamData, localStore);
final double[] rd = new double[6];
affine.getMatrix(rd);
rd[4] -= rawRect.getX();
rd[5] -= rawRect.getY();
final AffineTransform rdAffine = new AffineTransform(rd);
image = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_ARGB);
final Graphics2D g2 = image.createGraphics();
glyphDisplay.setG2(g2);
glyphDisplay.paint(null, rdAffine, null);
}
return image;
// //flip it for using in viewer
//// if(gsAffine.getScaleY()<0){
//// AffineTransform tx = AffineTransform.getScaleInstance(1, -1);
//// tx.translate(0, -image.getHeight(null));
//// AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
//// image = op.filter(image, null);
//// }
////
// System.out.println(gsAffine);
// System.out.println(rawRect);
//// Rectangle2D fRect = new Rectangle2D.Double(rawRect.getX(), rawRect.getY(), imageW, imageH);
// Rectangle2D fRect = new Rectangle2D.Double(0,0,image.getWidth(),image.getHeight());
// TexturePaint paint;
// if(isRotated){
// paint = new ShearedTexturePaint(image, fRect, rotatedAffine);
// }else{
// paint = new PdfTexturePaint(image, fRect);
// }
//
// BufferedImage img = new BufferedImage((int)imageW,(int)imageH, BufferedImage.TYPE_INT_ARGB);
// Graphics2D imgG = (Graphics2D)img.createGraphics();
// imgG.setPaint(paint);
// imgG.fillRect(0, 0, pw, ph);
// try {
// javax.imageio.ImageIO.write(image, "png", new java.io.File("C:\\Users\\suda\\Desktop\\testimages\\10-"+System.currentTimeMillis()+".png"));
// javax.imageio.ImageIO.write(img, "png", new java.io.File("C:\\Users\\suda\\Desktop\\testimages\\11-"+System.currentTimeMillis()+".png"));
// } catch (Exception ex) {
// ex.printStackTrace();
// }
}
private static float[][] getMatrix(final AffineTransform af) {
return new float[][]{{(float) af.getScaleX(), (float) af.getShearX(), 0f}, {(float) af.getShearY(), (float) af.getScaleY(), 0f}, {(float) af.getTranslateX(), (float) af.getTranslateY(), 1f}};
}
public BufferedImage getRawImage(final AffineTransform callerAffine) {
final byte[] streamData = currentPdfFile.readStream(PatternObj, true, true, true, false, false, PatternObj.getCacheName(currentPdfFile.getObjectReader()));
final ObjectStore localStore = new ObjectStore();
//float[] inputs = PatternObj.getFloatArray(PdfDictionary.Matrix);
final AffineTransform pattern = new AffineTransform();
pattern.concatenate(callerAffine);
final PatternDisplay glyphDisplay = decodePatternContent(PatternObj, getMatrix(pattern), streamData, localStore);
return glyphDisplay.getSingleImagePattern();
}
private PdfPaint setupTilingNew(final PdfObject PatternObj, final byte[] streamData) {
float[][] mm;
AffineTransform affine = new AffineTransform();
AffineTransform rotatedAffine = new AffineTransform();
final float[] inputs = PatternObj.getFloatArray(PdfDictionary.Matrix);
if (inputs != null) {
mm = new float[][]{{inputs[0], inputs[1], 0f}, {inputs[2], inputs[3], 0f}, {inputs[4], inputs[5], 1f}};
affine = new AffineTransform(mm[0][0], mm[0][1], mm[1][0], mm[1][1], mm[2][0], mm[2][1]);
} else {
mm = new float[][]{{1f, 0f, 0f}, {0f, 1f, 0f}, {0f, 0f, 1f}};
}
final ObjectStore localStore = new ObjectStore();
final BufferedImage image;
PatternDisplay glyphDisplay;
final boolean isRotated = affine.getShearX() != 0 || affine.getShearY() != 0;
if (isRotated) {
rotatedAffine = affine;
affine = new AffineTransform();
mm = new float[][]{{1f, 0f, 0f}, {0f, 1f, 0f}, {0f, 0f, 1f}};
} else if (useMemoryEfficentPaint) {
return new TilingPaint(PatternObj, streamData, this);
}
//System.out.println("mm="+mm[0][0]+" "+mm[0][1]+" "+mm[1][0]+" "+mm[1][1]+" "+mm[2][0]+" "+mm[2][1]+" "+isRotated);
final float[] rawBBox = PatternObj.getFloatArray(PdfDictionary.BBox);
final float xGap = Math.abs(rawBBox[2] - rawBBox[0]);
final float yGap = Math.abs(rawBBox[1] - rawBBox[3]);
final GeneralPath rawPath = new GeneralPath();
rawPath.moveTo(rawBBox[0], rawBBox[1]);
rawPath.lineTo(rawBBox[2], rawBBox[1]);
rawPath.lineTo(rawBBox[2], rawBBox[3]);
rawPath.lineTo(rawBBox[0], rawBBox[3]);
rawPath.lineTo(rawBBox[0], rawBBox[1]);
rawPath.closePath();
final Shape rawShape = rawPath.createTransformedShape(affine);
final Rectangle2D rawRect = rawShape.getBounds2D();
float rawXStep = PatternObj.getFloatNumber(PdfDictionary.XStep);
rawXStep = (30000 < rawXStep || rawXStep < -30000) ? 0f : rawXStep;
float rawYStep = PatternObj.getFloatNumber(PdfDictionary.YStep);
rawYStep = (30000 < rawYStep || rawYStep < -30000) ? 0f : rawYStep;
final float[] bbox = new float[4];
if (rawXStep < 0) {
bbox[2] = xGap - rawXStep;
} else {
bbox[2] = rawXStep;
}
if (rawYStep < 0) {
bbox[3] = yGap - rawYStep;
} else {
bbox[3] = rawYStep;
}
final GeneralPath boxPath = new GeneralPath();
boxPath.moveTo(bbox[0], bbox[1]);
boxPath.lineTo(bbox[2], bbox[1]);
boxPath.lineTo(bbox[2], bbox[3]);
boxPath.lineTo(bbox[0], bbox[3]);
boxPath.lineTo(bbox[0], bbox[1]);
boxPath.closePath();
final Shape boxShape = boxPath.createTransformedShape(affine);
final Rectangle2D boxRect = boxShape.getBounds2D();
double imageW = (Math.abs(boxRect.getX()) + boxRect.getWidth()) - (Math.abs(rawRect.getX()));
double imageH = (Math.abs(boxRect.getY()) + boxRect.getHeight()) - (Math.abs(rawRect.getY()));
imageW = rawXStep == 0 ? rawRect.getWidth() : imageW;
imageH = rawYStep == 0 ? rawRect.getWidth() : imageH;
imageW = imageW > 3000 ? 3000 : imageW;
imageH = imageH > 3000 ? 3000 : imageH;
int iw = (int) (imageW);
iw = iw < 1 ? 1 : iw;
int ih = (int) (imageH);
ih = ih < 1 ? 1 : ih;
//hack fix to odd_pattern.pdf file
if (imageH < 1 && imageW < 2.5) {
iw = 1;
}
final Rectangle2D fRect = new Rectangle2D.Double(rawRect.getX(), rawRect.getY(), imageW, imageH);
image = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_ARGB);
if (isRotated) {
glyphDisplay = decodePatternContent(PatternObj, null, streamData, localStore);
BufferedImage sing = glyphDisplay.getSingleImagePattern();
if (sing != null) {
sing = RenderUtils.invertImage(sing);
return new ShearedTexturePaint(sing, fRect, rotatedAffine);
} else {
mm[2][0] = (float) (mm[2][0] - rawRect.getX());
mm[2][1] = (float) (mm[2][1] - rawRect.getY());
glyphDisplay = decodePatternContent(PatternObj, mm, streamData, localStore);
final Graphics2D g2 = image.createGraphics();
glyphDisplay.setG2(g2);
glyphDisplay.paint(null, null, null);
return new ShearedTexturePaint(image, fRect, rotatedAffine);
}
} else {
mm[2][0] = (float) (mm[2][0] - rawRect.getX());
mm[2][1] = (float) (mm[2][1] - rawRect.getY());
glyphDisplay = decodePatternContent(PatternObj, mm, streamData, localStore);
final Graphics2D g2 = image.createGraphics();
glyphDisplay.setG2(g2);
glyphDisplay.paint(null, null, null);
//System.out.println("texture "+fRect+" ");
return new ShearedTexturePaint(image, fRect, rotatedAffine);
}
}
public PatternDisplay decodePatternContent(final PdfObject PatternObj, final float[][] matrix, final byte[] streamData, final ObjectStore localStore) {
final PdfObject Resources = PatternObj.getDictionary(PdfDictionary.Resources);
//decode and create graphic of glyph
final PdfStreamDecoderForPattern glyphDecoder = new PdfStreamDecoderForPattern(currentPdfFile);
glyphDecoder.setParameters(false, true, 7, 0, false, false);
glyphDecoder.setObjectValue(ValueTypes.ObjectStore, localStore);
//glyphDecoder.setMultiplier(multiplyer);
//T3Renderer glyphDisplay=new T3Display(0,false,20,localStore);
final PatternDisplay glyphDisplay = new PatternDisplay(0, false, 20, localStore);
try {
glyphDecoder.setRenderer(glyphDisplay);
if (Resources != null) {
glyphDecoder.readResources(Resources, true);
}
/*
* setup matrix so scales correctly
**/
final GraphicsState currentGraphicsState = new GraphicsState(0, 0);
glyphDecoder.setGS(currentGraphicsState);
//multiply to get new CTM
if (matrix != null) {
currentGraphicsState.CTM = matrix;
}
/*
* add in a colour (may well need further development)
*/
if (strokCol == null) {
glyphDecoder.setDefaultColors(gs.getStrokeColor(), gs.getNonstrokeColor());
} else {
glyphDecoder.setDefaultColors(strokCol, strokCol);
}
glyphDecoder.decodePageContent(currentGraphicsState, streamData);
} catch (final PdfException e) {
LogWriter.writeLog("Exception: " + e.getMessage());
}
//flush as image now created
return glyphDisplay;
}
/**
*/
private PdfPaint setupShading(final PdfObject PatternObj, final float[][] matrix) {
final PdfArrayIterator shadingArray = PatternObj.getMixedArray(PdfDictionary.Shading);
final PdfObject Shading = PdfObjectFactory.getPDFObjectObjectFromRefOrDirect(new ShadingObject(PatternObj.getObjectRefAsString()), currentPdfFile.getObjectReader(), shadingArray.getNextValueAsByte(true), PdfDictionary.Shading);
final PdfArrayIterator ColorSpace = Shading.getMixedArray(PdfDictionary.ColorSpace);
final GenericColorSpace newColorSpace = ColorspaceFactory.getColorSpaceInstance(currentPdfFile, ColorSpace);
return new ShadedPaint(Shading, isPrinting, newColorSpace, currentPdfFile, matrix, colorsReversed);
}
public PatternObject getPatternObj() {
currentPdfFile.checkResolved(PatternObj);
return PatternObj;
}
public PdfObjectReader getObjectReader() {
return currentPdfFile;
}
}
