<?php

/**
 * @package php-svg-lib
 * @link    http://github.com/dompdf/php-svg-lib
 * @license GNU LGPLv3+ http://www.gnu.org/copyleft/lesser.html
 */
namespace DynamicOOOS\Svg;

use DynamicOOOS\Svg\Tag\AbstractTag;
class Style
{
    const TYPE_COLOR = 1;
    const TYPE_LENGTH = 2;
    const TYPE_NAME = 3;
    const TYPE_ANGLE = 4;
    const TYPE_NUMBER = 5;
    private $_document;
    private $_parentStyle;
    public $color;
    public $opacity;
    public $display;
    public $fill;
    public $fillOpacity;
    public $fillRule;
    public $stroke;
    public $strokeOpacity;
    public $strokeLinecap;
    public $strokeLinejoin;
    public $strokeMiterlimit;
    public $strokeWidth;
    public $strokeDasharray;
    public $strokeDashoffset;
    public $fontFamily = 'serif';
    public $fontSize = 12;
    public $fontWeight = 'normal';
    public $fontStyle = 'normal';
    public $textAnchor = 'start';
    public function __construct($document = null)
    {
        if ($document !== null) {
            $this->_document = $document;
        }
    }
    protected function getStyleMap()
    {
        return array('color' => array('color', self::TYPE_COLOR), 'opacity' => array('opacity', self::TYPE_NUMBER), 'display' => array('display', self::TYPE_NAME), 'fill' => array('fill', self::TYPE_COLOR), 'fill-opacity' => array('fillOpacity', self::TYPE_NUMBER), 'fill-rule' => array('fillRule', self::TYPE_NAME), 'stroke' => array('stroke', self::TYPE_COLOR), 'stroke-dasharray' => array('strokeDasharray', self::TYPE_NAME), 'stroke-dashoffset' => array('strokeDashoffset', self::TYPE_NUMBER), 'stroke-linecap' => array('strokeLinecap', self::TYPE_NAME), 'stroke-linejoin' => array('strokeLinejoin', self::TYPE_NAME), 'stroke-miterlimit' => array('strokeMiterlimit', self::TYPE_NUMBER), 'stroke-opacity' => array('strokeOpacity', self::TYPE_NUMBER), 'stroke-width' => array('strokeWidth', self::TYPE_NUMBER), 'font-family' => array('fontFamily', self::TYPE_NAME), 'font-size' => array('fontSize', self::TYPE_NUMBER), 'font-weight' => array('fontWeight', self::TYPE_NAME), 'font-style' => array('fontStyle', self::TYPE_NAME), 'text-anchor' => array('textAnchor', self::TYPE_NAME));
    }
    /**
     * @param $attributes
     *
     * @return Style
     */
    public function fromAttributes($attributes)
    {
        $this->fillStyles($attributes);
        if (isset($attributes["style"])) {
            $styles = self::parseCssStyle($attributes["style"]);
            $this->fillStyles($styles);
        }
    }
    public function inherit(AbstractTag $tag)
    {
        $group = $tag->getParentGroup();
        if ($group) {
            $parent_style = $group->getStyle();
            $this->_parentStyle = $parent_style;
            foreach ($parent_style as $_key => $_value) {
                if ($_value !== null) {
                    $this->{$_key} = $_value;
                }
            }
        }
    }
    public function fromStyleSheets(AbstractTag $tag, $attributes)
    {
        $class = isset($attributes["class"]) ? \preg_split('/\\s+/', \trim($attributes["class"])) : null;
        $stylesheets = $tag->getDocument()->getStyleSheets();
        $outputFormat = \DynamicOOOS\Sabberworm\CSS\OutputFormat::createCompact();
        $styles = array();
        foreach ($stylesheets as $_sc) {
            /** @var \Sabberworm\CSS\RuleSet\DeclarationBlock $_decl */
            foreach ($_sc->getAllDeclarationBlocks() as $_decl) {
                /** @var \Sabberworm\CSS\Property\Selector $_selector */
                foreach ($_decl->getSelectors() as $_selector) {
                    $_selector = $_selector->getSelector();
                    // Match class name
                    if ($class !== null) {
                        foreach ($class as $_class) {
                            if ($_selector === ".{$_class}") {
                                /** @var \Sabberworm\CSS\Rule\Rule $_rule */
                                foreach ($_decl->getRules() as $_rule) {
                                    $value = $_rule->getValue();
                                    if ($value instanceof \DynamicOOOS\Sabberworm\CSS\Value\Value) {
                                        $styles[$_rule->getRule()] = $value->render($outputFormat) . "";
                                    } else {
                                        $styles[$_rule->getRule()] = $value . "";
                                    }
                                }
                                break 2;
                            }
                        }
                    }
                    // Match tag name
                    if ($_selector === $tag->tagName) {
                        /** @var \Sabberworm\CSS\Rule\Rule $_rule */
                        foreach ($_decl->getRules() as $_rule) {
                            $value = $_rule->getValue();
                            if ($value instanceof \DynamicOOOS\Sabberworm\CSS\Value\Value) {
                                $styles[$_rule->getRule()] = $value->render($outputFormat) . "";
                            } else {
                                $styles[$_rule->getRule()] = $value . "";
                            }
                        }
                        break;
                    }
                }
            }
        }
        $this->fillStyles($styles);
    }
    protected function fillStyles($styles)
    {
        $style_map = $this->getStyleMap();
        foreach ($style_map as $from => $spec) {
            if (isset($styles[$from])) {
                list($to, $type) = $spec;
                $value = null;
                switch ($type) {
                    case self::TYPE_COLOR:
                        $value = self::parseColor($styles[$from]);
                        if ($value === "currentcolor") {
                            if ($type === "color") {
                                $value = $this->_parentStyle->color;
                            } else {
                                $value = $this->color;
                            }
                        }
                        if (\is_array($value) && $value[3] !== 1.0 && \array_key_exists("{$from}-opacity", $style_map) === \true) {
                            $styles["{$from}-opacity"] = $value[3];
                        }
                        break;
                    case self::TYPE_NUMBER:
                        $value = $styles[$from] === null ? null : (float) $styles[$from];
                        break;
                    default:
                        $value = $styles[$from];
                }
                if ($from === "font-family") {
                    $scheme = \strtolower(\parse_url($value, \PHP_URL_SCHEME) ?: "");
                    if ($scheme === "phar" || \strtolower(\substr($value, 0, 7)) === "phar://" || $this->_document !== null && $this->_document->allowExternalReferences === \false && $scheme !== "data") {
                        continue;
                    }
                }
                if ($value !== null) {
                    $this->{$to} = $value;
                }
            }
        }
    }
    static function parseColor($color)
    {
        $color = \strtolower(\trim($color));
        $parts = \preg_split('/[^,]\\s+/', $color, 2);
        if (\count($parts) == 2) {
            $color = $parts[1];
        } else {
            $color = $parts[0];
        }
        if ($color === "none") {
            return "none";
        }
        if ($color === "currentcolor") {
            return "currentcolor";
        }
        if ($color === "transparent") {
            return [0.0, 0.0, 0.0, 0.0];
        }
        // SVG color name
        if (isset(self::$colorNames[$color])) {
            return self::parseHexColor(self::$colorNames[$color]);
        }
        // Hex color
        if ($color[0] === "#") {
            return self::parseHexColor($color);
        }
        // RGB color
        if (\strpos($color, "rgb") !== \false) {
            return self::getQuad($color);
        }
        // HSL color
        if (\strpos($color, "hsl") !== \false) {
            $quad = self::getQuad($color, \true);
            if ($quad == null) {
                return null;
            }
            list($h, $s, $l, $a) = $quad;
            $r = $l;
            $g = $l;
            $b = $l;
            $v = $l <= 0.5 ? $l * (1.0 + $s) : $l + $s - $l * $s;
            if ($v > 0) {
                $m = $l + $l - $v;
                $sv = ($v - $m) / $v;
                $h *= 6.0;
                $sextant = \floor($h);
                $fract = $h - $sextant;
                $vsf = $v * $sv * $fract;
                $mid1 = $m + $vsf;
                $mid2 = $v - $vsf;
                switch ($sextant) {
                    case 0:
                        $r = $v;
                        $g = $mid1;
                        $b = $m;
                        break;
                    case 1:
                        $r = $mid2;
                        $g = $v;
                        $b = $m;
                        break;
                    case 2:
                        $r = $m;
                        $g = $v;
                        $b = $mid1;
                        break;
                    case 3:
                        $r = $m;
                        $g = $mid2;
                        $b = $v;
                        break;
                    case 4:
                        $r = $mid1;
                        $g = $m;
                        $b = $v;
                        break;
                    case 5:
                        $r = $v;
                        $g = $m;
                        $b = $mid2;
                        break;
                }
            }
            $a = $a * 255;
            return array($r * 255.0, $g * 255.0, $b * 255.0, $a);
        }
        // Gradient
        if (\strpos($color, "url(#") !== \false) {
            $i = \strpos($color, "(");
            $j = \strpos($color, ")");
            // Bad url format
            if ($i === \false || $j === \false) {
                return null;
            }
            //FIXME: gradients not supported?
            return null;
            // trim(substr($color, $i + 1, $j - $i - 1));
        }
        return null;
    }
    static function getQuad($color, $percent = \false)
    {
        $i = \strpos($color, "(");
        $j = \strpos($color, ")");
        // Bad color value
        if ($i === \false || $j === \false) {
            return null;
        }
        $quad = \preg_split("/\\s*[,\\/]\\s*/", \trim(\substr($color, $i + 1, $j - $i - 1)));
        if (!isset($quad[3])) {
            $quad[3] = "1";
        }
        if (\count($quad) != 3 && \count($quad) != 4) {
            return null;
        }
        foreach (\array_keys($quad) as $c) {
            $quad[$c] = \trim($quad[$c]);
            if ($percent) {
                if ($quad[$c][\strlen($quad[$c]) - 1] === "%") {
                    $quad[$c] = \floatval($quad[$c]) / 100;
                } else {
                    $quad[$c] = \floatval($quad[$c]) / 255;
                }
            } else {
                if ($quad[$c][\strlen($quad[$c]) - 1] === "%") {
                    $quad[$c] = \floatval($quad[$c]) * 2.55;
                } else {
                    $quad[$c] = \floatval($quad[$c]);
                }
            }
        }
        return $quad;
    }
    static function parseHexColor($hex)
    {
        $c = array(0.0, 0.0, 0.0, 1.0);
        // #FFFFFF
        if (isset($hex[6])) {
            $c[0] = \hexdec(\substr($hex, 1, 2));
            $c[1] = \hexdec(\substr($hex, 3, 2));
            $c[2] = \hexdec(\substr($hex, 5, 2));
            if (isset($hex[7])) {
                $alpha = \substr($hex, 7, 2);
                if (\ctype_xdigit($alpha)) {
                    $c[3] = \round(\hexdec($alpha) / 255, 2);
                }
            }
        } else {
            $c[0] = \hexdec($hex[1] . $hex[1]);
            $c[1] = \hexdec($hex[2] . $hex[2]);
            $c[2] = \hexdec($hex[3] . $hex[3]);
            if (isset($hex[4])) {
                if (\ctype_xdigit($hex[4])) {
                    $c[3] = \round(\hexdec($hex[4] . $hex[4]) / 255, 2);
                }
            }
        }
        return $c;
    }
    /**
     * Simple CSS parser
     *
     * @param $style
     *
     * @return array
     */
    static function parseCssStyle($style)
    {
        $matches = array();
        \preg_match_all("/([a-z-]+)\\s*:\\s*([^;\$]+)/si", $style, $matches, \PREG_SET_ORDER);
        $styles = array();
        foreach ($matches as $match) {
            $styles[$match[1]] = $match[2];
        }
        return $styles;
    }
    static $colorNames = array('antiquewhite' => '#FAEBD7', 'aqua' => '#00FFFF', 'aquamarine' => '#7FFFD4', 'beige' => '#F5F5DC', 'black' => '#000000', 'blue' => '#0000FF', 'brown' => '#A52A2A', 'cadetblue' => '#5F9EA0', 'chocolate' => '#D2691E', 'cornflowerblue' => '#6495ED', 'crimson' => '#DC143C', 'darkblue' => '#00008B', 'darkgoldenrod' => '#B8860B', 'darkgreen' => '#006400', 'darkmagenta' => '#8B008B', 'darkorange' => '#FF8C00', 'darkred' => '#8B0000', 'darkseagreen' => '#8FBC8F', 'darkslategray' => '#2F4F4F', 'darkviolet' => '#9400D3', 'deepskyblue' => '#00BFFF', 'dodgerblue' => '#1E90FF', 'firebrick' => '#B22222', 'forestgreen' => '#228B22', 'fuchsia' => '#FF00FF', 'gainsboro' => '#DCDCDC', 'gold' => '#FFD700', 'gray' => '#808080', 'green' => '#008000', 'greenyellow' => '#ADFF2F', 'hotpink' => '#FF69B4', 'indigo' => '#4B0082', 'khaki' => '#F0E68C', 'lavenderblush' => '#FFF0F5', 'lemonchiffon' => '#FFFACD', 'lightcoral' => '#F08080', 'lightgoldenrodyellow' => '#FAFAD2', 'lightgreen' => '#90EE90', 'lightsalmon' => '#FFA07A', 'lightskyblue' => '#87CEFA', 'lightslategray' => '#778899', 'lightyellow' => '#FFFFE0', 'lime' => '#00FF00', 'limegreen' => '#32CD32', 'magenta' => '#FF00FF', 'maroon' => '#800000', 'mediumaquamarine' => '#66CDAA', 'mediumorchid' => '#BA55D3', 'mediumseagreen' => '#3CB371', 'mediumspringgreen' => '#00FA9A', 'mediumvioletred' => '#C71585', 'midnightblue' => '#191970', 'mintcream' => '#F5FFFA', 'moccasin' => '#FFE4B5', 'navy' => '#000080', 'olive' => '#808000', 'orange' => '#FFA500', 'orchid' => '#DA70D6', 'palegreen' => '#98FB98', 'palevioletred' => '#D87093', 'peachpuff' => '#FFDAB9', 'pink' => '#FFC0CB', 'powderblue' => '#B0E0E6', 'purple' => '#800080', 'red' => '#FF0000', 'royalblue' => '#4169E1', 'salmon' => '#FA8072', 'seagreen' => '#2E8B57', 'sienna' => '#A0522D', 'silver' => '#C0C0C0', 'skyblue' => '#87CEEB', 'slategray' => '#708090', 'springgreen' => '#00FF7F', 'steelblue' => '#4682B4', 'tan' => '#D2B48C', 'teal' => '#008080', 'thistle' => '#D8BFD8', 'turquoise' => '#40E0D0', 'violetred' => '#D02090', 'white' => '#FFFFFF', 'yellow' => '#FFFF00', 'aliceblue' => '#f0f8ff', 'azure' => '#f0ffff', 'bisque' => '#ffe4c4', 'blanchedalmond' => '#ffebcd', 'blueviolet' => '#8a2be2', 'burlywood' => '#deb887', 'chartreuse' => '#7fff00', 'coral' => '#ff7f50', 'cornsilk' => '#fff8dc', 'cyan' => '#00ffff', 'darkcyan' => '#008b8b', 'darkgray' => '#a9a9a9', 'darkgrey' => '#a9a9a9', 'darkkhaki' => '#bdb76b', 'darkolivegreen' => '#556b2f', 'darkorchid' => '#9932cc', 'darksalmon' => '#e9967a', 'darkslateblue' => '#483d8b', 'darkslategrey' => '#2f4f4f', 'darkturquoise' => '#00ced1', 'deeppink' => '#ff1493', 'dimgray' => '#696969', 'dimgrey' => '#696969', 'floralwhite' => '#fffaf0', 'ghostwhite' => '#f8f8ff', 'goldenrod' => '#daa520', 'grey' => '#808080', 'honeydew' => '#f0fff0', 'indianred' => '#cd5c5c', 'ivory' => '#fffff0', 'lavender' => '#e6e6fa', 'lawngreen' => '#7cfc00', 'lightblue' => '#add8e6', 'lightcyan' => '#e0ffff', 'lightgray' => '#d3d3d3', 'lightgrey' => '#d3d3d3', 'lightpink' => '#ffb6c1', 'lightseagreen' => '#20b2aa', 'lightslategrey' => '#778899', 'lightsteelblue' => '#b0c4de', 'linen' => '#faf0e6', 'mediumblue' => '#0000cd', 'mediumpurple' => '#9370db', 'mediumslateblue' => '#7b68ee', 'mediumturquoise' => '#48d1cc', 'mistyrose' => '#ffe4e1', 'navajowhite' => '#ffdead', 'oldlace' => '#fdf5e6', 'olivedrab' => '#6b8e23', 'orangered' => '#ff4500', 'palegoldenrod' => '#eee8aa', 'paleturquoise' => '#afeeee', 'papayawhip' => '#ffefd5', 'peru' => '#cd853f', 'plum' => '#dda0dd', 'rosybrown' => '#bc8f8f', 'saddlebrown' => '#8b4513', 'sandybrown' => '#f4a460', 'seashell' => '#fff5ee', 'slateblue' => '#6a5acd', 'slategrey' => '#708090', 'snow' => '#fffafa', 'tomato' => '#ff6347', 'violet' => '#ee82ee', 'wheat' => '#f5deb3', 'whitesmoke' => '#f5f5f5', 'yellowgreen' => '#9acd32');
}
