com.itextpdf.text.pdf.parser.PathPaintingRenderInfo.java Source code

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Here is the source code for com.itextpdf.text.pdf.parser.PathPaintingRenderInfo.java

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/*
 *
 * This file is part of the iText (R) project.
Copyright (c) 1998-2019 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * This program 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 Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
package com.itextpdf.text.pdf.parser;

/**
 * Contains information relating to painting current path.
 *
 * @since 5.5.6
 */
public class PathPaintingRenderInfo {

    /**
     * The nonzero winding number rule determines whether a given point is inside a path by
     * conceptually drawing a ray from that point to infinity in any direction and then examining
     * the places where a segment of the path crosses the ray. Starting with a count of 0, the rule
     * adds 1 each time a path segment crosses the ray from left to right and subtracts 1 each time a
     * segment crosses from right to left. After counting all the crossings, if the result is 0, the
     * point is outside the path; otherwise, it is inside.
     *
     * For more details see PDF spec.
     */
    public static final int NONZERO_WINDING_RULE = 1;

    /**
     * The even-odd rule determines whether a point is inside a path by drawing a ray from that point in
     * any direction and simply counting the number of path segments that cross the ray, regardless of
     * direction. If this number is odd, the point is inside; if even, the point is outside.
     *
     * For more details see PDF spec.
     */
    public static final int EVEN_ODD_RULE = 2;

    /**
     * End the path object without filling or stroking it. This operator shall be a path-painting no-op,
     * used primarily for the side effect of changing the current clipping path
     */
    public static final int NO_OP = 0;

    /**
     * Value specifying stroke operation to perform on the current path.
     */
    public static final int STROKE = 1;

    /**
     * Value specifying fill operation to perform on the current path. When the fill operation
     * is performed it should use either nonzero winding or even-odd rule.
     */
    public static final int FILL = 2;

    private int operation;
    private int rule;
    private GraphicsState gs;

    /**
     * @param operation One of the possible combinations of {@link #STROKE} and {@link #FILL} values or {@link #NO_OP}
     * @param rule      Either {@link #NONZERO_WINDING_RULE} or {@link #EVEN_ODD_RULE}.
     * @param gs        The graphics state.
     */
    public PathPaintingRenderInfo(int operation, int rule, GraphicsState gs) {
        this.operation = operation;
        this.rule = rule;
        this.gs = gs;
    }

    /**
     * If the operation is {@link #NO_OP} then the rule is ignored,
     * otherwise {@link #NONZERO_WINDING_RULE} is used by default.
     *
     * See {@link #PathPaintingRenderInfo(int, int, GraphicsState)}
     */
    public PathPaintingRenderInfo(int operation, GraphicsState gs) {
        this(operation, NONZERO_WINDING_RULE, gs);
    }

    /**
     * @return <CODE>int</CODE> value which is either {@link #NO_OP} or one of possible
     * combinations of {@link #STROKE} and {@link #FILL}
     */
    public int getOperation() {
        return operation;
    }

    /**
     * @return Either {@link #NONZERO_WINDING_RULE} or {@link #EVEN_ODD_RULE}.
     */
    public int getRule() {
        return rule;
    }

    /**
     * @return Current transformation matrix.
     */
    public Matrix getCtm() {
        return gs.ctm;
    }

    public float getLineWidth() {
        return gs.getLineWidth();
    }

    public int getLineCapStyle() {
        return gs.getLineCapStyle();
    }

    public int getLineJoinStyle() {
        return gs.getLineJoinStyle();
    }

    public float getMiterLimit() {
        return gs.getMiterLimit();
    }

    public LineDashPattern getLineDashPattern() {
        return gs.getLineDashPattern();
    }
}