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/*
 * $Id: 2dc661a26d83fa04d42bbdcc98abb19bfd067a52 $
 *
 * This file is part of the iText (R) project.
 * Copyright (c) 1998-2016 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
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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 int 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();
    }
}