diff options
Diffstat (limited to 'library/vendor/dompdf/vendor/phenx/php-font-lib/src/FontLib/Glyph/OutlineSimple.php')
-rw-r--r-- | library/vendor/dompdf/vendor/phenx/php-font-lib/src/FontLib/Glyph/OutlineSimple.php | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/library/vendor/dompdf/vendor/phenx/php-font-lib/src/FontLib/Glyph/OutlineSimple.php b/library/vendor/dompdf/vendor/phenx/php-font-lib/src/FontLib/Glyph/OutlineSimple.php new file mode 100644 index 0000000..56b2fb4 --- /dev/null +++ b/library/vendor/dompdf/vendor/phenx/php-font-lib/src/FontLib/Glyph/OutlineSimple.php @@ -0,0 +1,335 @@ +<?php +/** + * @package php-font-lib + * @link https://github.com/PhenX/php-font-lib + * @author Fabien Ménager <fabien.menager@gmail.com> + * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License + * @version $Id: Font_Table_glyf.php 46 2012-04-02 20:22:38Z fabien.menager $ + */ + +namespace FontLib\Glyph; + +/** + * `glyf` font table. + * + * @package php-font-lib + */ +class OutlineSimple extends Outline { + const ON_CURVE = 0x01; + const X_SHORT_VECTOR = 0x02; + const Y_SHORT_VECTOR = 0x04; + const REPEAT = 0x08; + const THIS_X_IS_SAME = 0x10; + const THIS_Y_IS_SAME = 0x20; + + public $instructions; + public $points; + + function parseData() { + parent::parseData(); + + if (!$this->size) { + return; + } + + $font = $this->getFont(); + + $noc = $this->numberOfContours; + + if ($noc == 0) { + return; + } + + $endPtsOfContours = $font->r(array(self::uint16, $noc)); + + $instructionLength = $font->readUInt16(); + $this->instructions = $font->r(array(self::uint8, $instructionLength)); + + $count = $endPtsOfContours[$noc - 1] + 1; + + // Flags + $flags = array(); + for ($index = 0; $index < $count; $index++) { + $flags[$index] = $font->readUInt8(); + + if ($flags[$index] & self::REPEAT) { + $repeats = $font->readUInt8(); + + for ($i = 1; $i <= $repeats; $i++) { + $flags[$index + $i] = $flags[$index]; + } + + $index += $repeats; + } + } + + $points = array(); + foreach ($flags as $i => $flag) { + $points[$i]["onCurve"] = $flag & self::ON_CURVE; + $points[$i]["endOfContour"] = in_array($i, $endPtsOfContours); + } + + // X Coords + $x = 0; + for ($i = 0; $i < $count; $i++) { + $flag = $flags[$i]; + + if ($flag & self::THIS_X_IS_SAME) { + if ($flag & self::X_SHORT_VECTOR) { + $x += $font->readUInt8(); + } + } + else { + if ($flag & self::X_SHORT_VECTOR) { + $x -= $font->readUInt8(); + } + else { + $x += $font->readInt16(); + } + } + + $points[$i]["x"] = $x; + } + + // Y Coords + $y = 0; + for ($i = 0; $i < $count; $i++) { + $flag = $flags[$i]; + + if ($flag & self::THIS_Y_IS_SAME) { + if ($flag & self::Y_SHORT_VECTOR) { + $y += $font->readUInt8(); + } + } + else { + if ($flag & self::Y_SHORT_VECTOR) { + $y -= $font->readUInt8(); + } + else { + $y += $font->readInt16(); + } + } + + $points[$i]["y"] = $y; + } + + $this->points = $points; + } + + public function splitSVGPath($path) { + preg_match_all('/([a-z])|(-?\d+(?:\.\d+)?)/i', $path, $matches, PREG_PATTERN_ORDER); + + return $matches[0]; + } + + public function makePoints($path) { + $path = $this->splitSVGPath($path); + $l = count($path); + $i = 0; + + $points = array(); + + while ($i < $l) { + switch ($path[$i]) { + // moveTo + case "M": + $points[] = array( + "onCurve" => true, + "x" => $path[++$i], + "y" => $path[++$i], + "endOfContour" => false, + ); + break; + + // lineTo + case "L": + $points[] = array( + "onCurve" => true, + "x" => $path[++$i], + "y" => $path[++$i], + "endOfContour" => false, + ); + break; + + // quadraticCurveTo + case "Q": + $points[] = array( + "onCurve" => false, + "x" => $path[++$i], + "y" => $path[++$i], + "endOfContour" => false, + ); + $points[] = array( + "onCurve" => true, + "x" => $path[++$i], + "y" => $path[++$i], + "endOfContour" => false, + ); + break; + + // closePath + /** @noinspection PhpMissingBreakStatementInspection */ + case "z": + $points[count($points) - 1]["endOfContour"] = true; + + default: + $i++; + break; + } + } + + return $points; + } + + function encode() { + if (empty($this->points)) { + return parent::encode(); + } + + return $this->size = $this->encodePoints($this->points); + } + + public function encodePoints($points) { + $endPtsOfContours = array(); + $flags = array(); + $coords_x = array(); + $coords_y = array(); + + $last_x = 0; + $last_y = 0; + $xMin = $yMin = 0xFFFF; + $xMax = $yMax = -0xFFFF; + foreach ($points as $i => $point) { + $flag = 0; + if ($point["onCurve"]) { + $flag |= self::ON_CURVE; + } + + if ($point["endOfContour"]) { + $endPtsOfContours[] = $i; + } + + // Simplified, we could do some optimizations + if ($point["x"] == $last_x) { + $flag |= self::THIS_X_IS_SAME; + } + else { + $x = intval($point["x"]); + $xMin = min($x, $xMin); + $xMax = max($x, $xMax); + $coords_x[] = $x - $last_x; // int16 + } + + // Simplified, we could do some optimizations + if ($point["y"] == $last_y) { + $flag |= self::THIS_Y_IS_SAME; + } + else { + $y = intval($point["y"]); + $yMin = min($y, $yMin); + $yMax = max($y, $yMax); + $coords_y[] = $y - $last_y; // int16 + } + + $flags[] = $flag; + $last_x = $point["x"]; + $last_y = $point["y"]; + } + + $font = $this->getFont(); + + $l = 0; + $l += $font->writeInt16(count($endPtsOfContours)); // endPtsOfContours + $l += $font->writeFWord(isset($this->xMin) ? $this->xMin : $xMin); // xMin + $l += $font->writeFWord(isset($this->yMin) ? $this->yMin : $yMin); // yMin + $l += $font->writeFWord(isset($this->xMax) ? $this->xMax : $xMax); // xMax + $l += $font->writeFWord(isset($this->yMax) ? $this->yMax : $yMax); // yMax + + // Simple glyf + $l += $font->w(array(self::uint16, count($endPtsOfContours)), $endPtsOfContours); // endPtsOfContours + $l += $font->writeUInt16(0); // instructionLength + $l += $font->w(array(self::uint8, count($flags)), $flags); // flags + $l += $font->w(array(self::int16, count($coords_x)), $coords_x); // xCoordinates + $l += $font->w(array(self::int16, count($coords_y)), $coords_y); // yCoordinates + return $l; + } + + public function getSVGContours($points = null) { + $path = ""; + + if (!$points) { + if (empty($this->points)) { + $this->parseData(); + } + + $points = $this->points; + } + + $length = (empty($points) ? 0 : count($points)); + $firstIndex = 0; + $count = 0; + + for ($i = 0; $i < $length; $i++) { + $count++; + + if ($points[$i]["endOfContour"]) { + $path .= $this->getSVGPath($points, $firstIndex, $count); + $firstIndex = $i + 1; + $count = 0; + } + } + + return $path; + } + + protected function getSVGPath($points, $startIndex, $count) { + $offset = 0; + $path = ""; + + while ($offset < $count) { + $point = $points[$startIndex + $offset % $count]; + $point_p1 = $points[$startIndex + ($offset + 1) % $count]; + + if ($offset == 0) { + $path .= "M{$point['x']},{$point['y']} "; + } + + if ($point["onCurve"]) { + if ($point_p1["onCurve"]) { + $path .= "L{$point_p1['x']},{$point_p1['y']} "; + $offset++; + } + else { + $point_p2 = $points[$startIndex + ($offset + 2) % $count]; + + if ($point_p2["onCurve"]) { + $path .= "Q{$point_p1['x']},{$point_p1['y']},{$point_p2['x']},{$point_p2['y']} "; + } + else { + $path .= "Q{$point_p1['x']},{$point_p1['y']}," . $this->midValue($point_p1['x'], $point_p2['x']) . "," . $this->midValue($point_p1['y'], $point_p2['y']) . " "; + } + + $offset += 2; + } + } + else { + if ($point_p1["onCurve"]) { + $path .= "Q{$point['x']},{$point['y']},{$point_p1['x']},{$point_p1['y']} "; + } + else { + $path .= "Q{$point['x']},{$point['y']}," . $this->midValue($point['x'], $point_p1['x']) . "," . $this->midValue($point['y'], $point_p1['y']) . " "; + } + + $offset++; + } + } + + $path .= "z "; + + return $path; + } + + function midValue($a, $b) { + return $a + ($b - $a) / 2; + } +} |