org.jpedal.parser.image.utils.ConvertMaskToShape 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
*
* ---------------
* ConvertMaskToShape.java
* ---------------
*/
package org.jpedal.parser.image.utils;
import java.awt.geom.GeneralPath;
import org.jpedal.objects.GraphicsState;
import org.jpedal.objects.SwingShape;
import org.jpedal.parser.Cmd;
import org.jpedal.parser.ParserOptions;
import org.jpedal.render.DynamicVectorRenderer;
public class ConvertMaskToShape {
public static void convert(final GraphicsState gs, final DynamicVectorRenderer current, final ParserOptions parserOptions) {
float ix = gs.CTM[2][0];
float iy = gs.CTM[2][1];
float ih = gs.CTM[1][1];
if (ih == 0) {
ih = gs.CTM[1][0];
}
if (ih < 0) {
iy += ih;
ih = -ih;
}
float iw = gs.CTM[0][0];
if (iw == 0) {
iw = gs.CTM[0][1];
}
if (iw < 0) {
ix += iw;
iw = -iw;
}
//factor in GS rotation and swap w and h
if (gs.CTM[0][0] == 0 && gs.CTM[0][1] > 0 && gs.CTM[1][0] != 0 && gs.CTM[1][1] == 0) {
final float tmp = ih;
ih = iw;
iw = tmp;
}
//allow for odd values less than 1 and ensure minimum width
if (iw < 1) {
iw = 1;
}
if (ih < 1) {
ih = 1;
}
int lwidth = -1;
//for thin lines, use line width to ensure appears
if (ih < 3) {
lwidth = (int) ih;
ih = 1;
} else if (iw < 3) {
lwidth = (int) iw;
iw = 1;
}
final GeneralPath currentShape = new GeneralPath(GeneralPath.WIND_NON_ZERO);
currentShape.moveTo(ix, iy);
currentShape.lineTo(ix, iy + ih);
currentShape.lineTo(ix + iw, iy + ih);
currentShape.lineTo(ix + iw, iy);
currentShape.closePath();
//save for later
if (parserOptions.isRenderPage() && currentShape != null) {
final float lastLineWidth = gs.getLineWidth();
if (lwidth > 0) {
gs.setLineWidth(lwidth);
}
gs.setNonstrokeColor(gs.nonstrokeColorSpace.getColor());
gs.setFillType(GraphicsState.FILL);
current.drawShape(new SwingShape(currentShape), gs, Cmd.F);
//restore after draw
if (lwidth > 0) {
gs.setLineWidth(lastLineWidth);
}
}
}
}