Amenadiel\JpGraph\Image\RGB::Color()

Complexity

Conditions	17
Paths	1283

Size

Total Lines	67
Code Lines	38

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	33
CRAP Score	17.3649

Importance

Changes	2
Bugs	1	Features	0

<?php
    public function Color($aColor)
    {
        if (is_string($aColor)) {
            $matches = [];
            // this regex will parse a color string and fill the $matches array as such:
            // 0: the full match if any
            // 1: a hex string preceded by a hash, can be 3 characters (#fff) or 6 (#ffffff) (4 or 5 also accepted but...)
            // 2,3,4: r,g,b values in hex if the first character of the string is #
            // 5: all alpha-numeric characters at the beginning of the string if string does not start with #
            // 6: alpha value prefixed by @ if supplied
            // 7: alpha value with @ stripped
            // 8: adjust value prefixed with : if supplied
            // 9: adjust value with : stripped
            $regex = '/(#([0-9a-fA-F]{1,2})([0-9a-fA-F]{1,2})([0-9a-fA-F]{1,2}))?([\w]+)?(@([\d\.,]+))?(:([\d\.,]+))?/';
            if (!preg_match($regex, $aColor, $matches)) {
                Util\JpGraphError::RaiseL(25078, $aColor); //(" Unknown color: $aColor");
            }
            if (empty($matches[5])) {
                $r = strlen($matches[2]) == 1 ? $matches[2] . $matches[2] : $matches[2];
                $g = strlen($matches[3]) == 1 ? $matches[3] . $matches[3] : $matches[3];
                $b = strlen($matches[4]) == 1 ? $matches[4] . $matches[4] : $matches[4];
                $r = hexdec($r);
                $g = hexdec($g);
                $b = hexdec($b);
            } else {
                if (!isset($this->rgb_table[$matches[5]])) {
                    Util\JpGraphError::RaiseL(25078, $aColor); //(" Unknown color: $aColor");
                }
                $r = $this->rgb_table[$matches[5]][0];
                $g = $this->rgb_table[$matches[5]][1];
                $b = $this->rgb_table[$matches[5]][2];
            }
            $alpha = isset($matches[7]) ? str_replace(',', '.', $matches[7]) : 0;
            $adj   = isset($matches[9]) ? str_replace(',', '.', $matches[9]) : 1.0;

            if ($alpha === '') {
                $alpha = 0;
            }

            if ($adj < 0) {
                Util\JpGraphError::RaiseL(25077); //('Adjustment factor for color must be > 0');
            }

            // Scale adj so that an adj=2 always
            // makes the color 100% white (i.e. 255,255,255.
            // and adj=1 neutral and adj=0 black.
            if ($adj == 1) {
                return [$r, $g, $b, $alpha];
            }
            if ($adj > 1) {
                $m = ($adj - 1.0) * (255 - min(255, min($r, min($g, $b))));

                return [min(255, $r + $m), min(255, $g + $m), min(255, $b + $m), $alpha];
            }
            if ($adj < 1) {
                $m = ($adj - 1.0) * max(255, max($r, max($g, $b)));

                return [max(0, $r + $m), max(0, $g + $m), max(0, $b + $m), $alpha];
            }
        } elseif (is_array($aColor)) {
            if (!isset($aColor[3])) {
                $aColor[3] = 0;
            }

            return $aColor;
        } else {
            Util\JpGraphError::RaiseL(25079, $aColor, safe_count($aColor)); //(" Unknown color specification: $aColor , size=". safe_count($aColor));
        }