ViewsPdfBase.php in Views PDF 8

Contains \Drupal\views_pdf\ViewsPdfTemplate.

Namespace

Drupal\views_pdf

File

src/ViewsPdfBase.php

<?php

/**
 * @file
 * Contains \Drupal\views_pdf\ViewsPdfTemplate.
 */
namespace Drupal\views_pdf;

use Drupal\views_pdf\Share\Utility;
use setasign\Fpdi\Fpdi;

/**
 * The main class to generate the PDF.
 */
class ViewsPdfBase extends Fpdi {
  use Utility;

  /**
   * List with the available fonts.
   *
   * @var array
   */
  protected static $fontList = NULL;

  /**
   * Clean font list.
   *
   * @var array
   */
  protected static $fontListClean = NULL;

  /**
   * List with the uploaded templates.
   *
   * @var array
   */
  protected static $templateList = NULL;

  /**
   * Hyphenate.
   *
   * @var array
   */
  protected static $hyphenatePatterns = NULL;
  protected $defaultFontStyle = '';
  protected $defaultFontFamily = 'Helvetica';
  protected $defaultFontSize = '11';
  protected $defaultTextAlign = 'L';
  protected $defaultFontColor = '000000';
  protected $defaultPageTemplateFiles = [];
  protected $mainContentPageNumber = 0;
  protected $rowContentPageNumber = 0;
  protected $defaultOrientation = 'P';
  protected $defaultFormat = 'A4';
  protected $addNewPageBeforeNextContent = FALSE;
  protected $elements = [];
  protected $headerFooterData = [];
  protected $viewsHeader = '';
  protected $view = NULL;
  protected $viewsFooter = '';
  protected $headerFooterOptions = [];
  protected $lastWritingPage = 1;
  protected $lastWritingPositions;
  protected static $defaultFontList = [
    'almohanad' => 'AlMohanad',
    'arialunicid0' => 'ArialUnicodeMS',
    'courier' => 'Courier',
    'courierb' => 'Courier Bold',
    'courierbi' => 'Courier Bold Italic',
    'courieri' => 'Courier Italic',
    'dejavusans' => 'DejaVuSans',
    'dejavusansb' => 'DejaVuSans-Bold',
    'dejavusansbi' => 'DejaVuSans-BoldOblique',
    'dejavusansi' => 'DejaVuSans-Oblique',
    'dejavusanscondensed' => 'DejaVuSansCondensed',
    'dejavusanscondensedb' => 'DejaVuSansCondensed-Bold',
    'dejavusanscondensedbi' => 'DejaVuSansCondensed-BoldOblique',
    'dejavusanscondensedi' => 'DejaVuSansCondensed-Oblique',
    'dejavusansmono' => 'DejaVuSansMono',
    'dejavusansmonob' => 'DejaVuSansMono-Bold',
    'dejavusansmonobi' => 'DejaVuSansMono-BoldOblique',
    'dejavusansmonoi' => 'DejaVuSansMono-Oblique',
    'dejavuserif' => 'DejaVuSerif',
    'dejavuserifb' => 'DejaVuSerif-Bold',
    'dejavuserifbi' => 'DejaVuSerif-BoldItalic',
    'dejavuserifi' => 'DejaVuSerif-Italic',
    'dejavuserifcondensed' => 'DejaVuSerifCondensed',
    'dejavuserifcondensedb' => 'DejaVuSerifCondensed-Bold',
    'dejavuserifcondensedbi' => 'DejaVuSerifCondensed-BoldItalic',
    'dejavuserifcondensedi' => 'DejaVuSerifCondensed-Italic',
    'freemono' => 'FreeMono',
    'freemonob' => 'FreeMonoBold',
    'freemonobi' => 'FreeMonoBoldOblique',
    'freemonoi' => 'FreeMonoOblique',
    'freesans' => 'FreeSans',
    'freesansb' => 'FreeSansBold',
    'freesansbi' => 'FreeSansBoldOblique',
    'freesansi' => 'FreeSansOblique',
    'freeserif' => 'FreeSerif',
    'freeserifb' => 'FreeSerifBold',
    'freeserifbi' => 'FreeSerifBoldItalic',
    'freeserifi' => 'FreeSerifItalic',
    'hysmyeongjostdmedium' => 'HYSMyeongJoStd-Medium-Acro',
    'helvetica' => 'Helvetica',
    'helveticab' => 'Helvetica Bold',
    'helveticabi' => 'Helvetica Bold Italic',
    'helveticai' => 'Helvetica Italic',
    'kozgopromedium' => 'KozGoPro-Medium-Acro',
    'kozminproregular' => 'KozMinPro-Regular-Acro',
    'msungstdlight' => 'MSungStd-Light-Acro',
    'stsongstdlight' => 'STSongStd-Light-Acro',
    'symbol' => 'Symbol',
    'times' => 'Times New Roman',
    'timesb' => 'Times New Roman Bold',
    'timesbi' => 'Times New Roman Bold Italic',
    'timesi' => 'Times New Roman Italic',
    'zapfdingbats' => 'Zapf Dingbats',
    'zarbold' => 'ZarBold',
  ];

  /**
   * This method overrides the parent constructor method.
   * this is need to reset the default values.
   */
  public function __construct($orientation = 'P', $unit = 'mm', $format = 'A4', $unicode = TRUE, $encoding = 'UTF-8', $diskcache = FALSE) {
    parent::__construct($orientation, $unit, $format, $unicode, $encoding, $diskcache);
    $this->defaultOrientation = $orientation;
    $this->defaultFormat = $format;
  }
  public function setDefaultFontSize($size) {
    $this->defaultFontSize = $size;
  }
  public function setDefaultFontFamily($family) {
    $this->defaultFontFamily = $family;
  }
  public function setDefaultFontStyle($style) {
    $this->defaultFontStyle = $style;
  }
  public function setDefaultTextAlign($style) {
    $this->defaultTextAlign = $style;
  }
  public function setDefaultFontColor($color) {
    $this->defaultFontColor = $color;
  }
  public function setDefaultPageTemplate($path, $key, $pageNumbering = 'main') {
    $this->defaultPageTemplateFiles[$key] = [
      'path' => $path,
      'numbering' => $pageNumbering,
    ];
  }
  public function setViewsHeader($header) {
    $this->views_header = $header;
  }

  /**
   * Get the page format list.
   *
   * @return mixed
   *   All formats avilable
   */
  public function getPageFormat() {
    $format['custom'] = t('Custom');
    $format['4A0'] = '4A0';
    $format['2A0'] = '2A0';
    $format['A0'] = 'A0';
    $format['A1'] = 'A1';
    $format['A2'] = 'A2';
    $format['A3'] = 'A3';
    $format['A4'] = 'A4';
    $format['A5'] = 'A5';
    $format['A6'] = 'A6';
    $format['A7'] = 'A7';
    $format['A8'] = 'A8';
    $format['A9'] = 'A9';
    $format['A10'] = 'A10';
    $format['B0'] = 'B0';
    $format['B1'] = 'B1';
    $format['B2'] = 'B2';
    $format['B3'] = 'B3';
    $format['B4'] = 'B4';
    $format['B5'] = 'B5';
    $format['B6'] = 'B6';
    $format['B7'] = 'B7';
    $format['B8'] = 'B8';
    $format['B9'] = 'B9';
    $format['B10'] = 'B10';
    $format['C0'] = 'C0';
    $format['C1'] = 'C1';
    $format['C2'] = 'C2';
    $format['C3'] = 'C3';
    $format['C4'] = 'C4';
    $format['C5'] = 'C5';
    $format['C6'] = 'C6';
    $format['C7'] = 'C7';
    $format['C8'] = 'C8';
    $format['C9'] = 'C9';
    $format['C10'] = 'C10';
    $format['RA0'] = 'RA0';
    $format['RA1'] = 'RA1';
    $format['RA2'] = 'RA2';
    $format['RA3'] = 'RA3';
    $format['RA4'] = 'RA4';
    $format['SRA0'] = 'SRA0';
    $format['SRA1'] = 'SRA1';
    $format['SRA2'] = 'SRA2';
    $format['SRA3'] = 'SRA3';
    $format['SRA4'] = 'SRA4';
    $format['LETTER'] = 'LETTER';
    $format['LEGAL'] = 'LEGAL';
    $format['EXECUTIVE'] = 'EXECUTIVE';
    $format['FOLIO'] = 'FOLIO';
    $format['MEMO'] = 'MEMO';
    return $format;
  }

  /**
   * This method must be overriden, in the other case, some
   * output is printed to the header.
   */
  function Header() {
    if (!empty($this->views_header)) {
      $this
        ->writeHTML($this->views_header);
    }
  }
  public function setViewsFooter($footer) {
    $this->views_footer = $footer;
  }

  /**
   * This method must be overriden, in the other case, some
   * output is printed to the footer.
   */
  function Footer() {
    $this
      ->SetY(-$this->bMargin);
    if (!empty($this->views_footer)) {
      $this
        ->writeHTML($this->views_footer);
    }
  }

  /**
   * Converts a hex color into an array with RGB colors.
   */
  public function convertHexColorToArray($hex) {
    if (drupal_strlen($hex) == 6) {
      $r = drupal_substr($hex, 0, 2);
      $g = drupal_substr($hex, 2, 2);
      $b = drupal_substr($hex, 4, 2);
      return [
        hexdec($r),
        hexdec($g),
        hexdec($b),
      ];
    }
    elseif (drupal_strlen($hex) == 3) {
      $r = drupal_substr($hex, 0, 1);
      $g = drupal_substr($hex, 1, 1);
      $b = drupal_substr($hex, 2, 1);
      return [
        hexdec($r),
        hexdec($g),
        hexdec($b),
      ];
    }
    else {
      return [];
    }
  }

  /**
   * Parse color input into an array.
   *
   * @param string $color Color entered by the user
   *
   * @return array color as an array
   */
  public function parseColor($color) {
    $color = trim($color, ', ');
    $components = explode(',', $color);
    if (count($components) == 1) {
      return $this
        ->convertHexColorToArray($color);
    }
    else {

      // Remove white spaces from comonents:
      foreach ($components as $id => $component) {
        $components[$id] = trim($component);
      }
      return $components;
    }
  }

  /**
   * This method draws a field on the PDF.
   */
  public function drawContent($row, $options, &$view = NULL, $key = NULL, $printLabels = TRUE) {
    if (!is_array($options)) {
      $options = [];
    }

    // Set defaults:
    $options += [
      'position' => [],
      'text' => [],
      'render' => [],
    ];
    $options['position'] += [
      'corner' => 'top_left',
      'x' => 0,
      'y' => 0,
      'object' => 'last_position',
      'width' => 0,
      'height' => 0,
    ];
    $options['text'] += [
      'font_family' => 'default',
      'font_style' => '',
    ];
    $options['render'] += [
      'minimal_space' => '',
      'eval_before' => '',
      'eval_after' => '',
      'bypass_eval_before' => FALSE,
      'bypass_eval_after' => FALSE,
    ];
    $x = $y = 0;

    // Get the page dimensions
    $pageDim = $this
      ->getPageDimensions();

    // Check if there is a minimum space defined. If so, then ensure
    // that we have enough space left on this page. If not force adding
    // a new one.
    if (isset($options['render']['minimal_space'])) {
      $enoughtSpace = $this->y + $this->bMargin + $options['render']['minimal_space'] < $pageDim['hk'];
    }
    else {
      $enoughtSpace = TRUE;
    }

    // Check if there is a page, if not add it:
    if (!$enoughtSpace or $this
      ->getPage() == 0 or $this->addNewPageBeforeNextContent == TRUE) {
      $this->addNewPageBeforeNextContent = FALSE;
      $this
        ->addPage();
    }

    // Get the page dimenstions again, because it can be that a new
    // page was added with new dimensions.
    $pageDim = $this
      ->getPageDimensions();

    // Determine the last writting y coordinate, if we are on a new
    // page we need to reset it back to the top margin.
    if ($this->lastWritingPage != $this
      ->getPage() or $this->y + $this->bMargin > $pageDim['hk']) {
      $last_writing_y_position = $this->tMargin;
    }
    else {
      $last_writing_y_position = $this->y;
    }

    // Determin the x and y coordinates
    if ($options['position']['object'] == 'last_position') {
      $x = $this->x + $options['position']['x'];
      $y = $this->y + $options['position']['y'];
    }
    elseif ($options['position']['object'] == 'page') {
      switch ($options['position']['corner']) {
        default:
        case 'top_left':
          $x = $options['position']['x'] + $this->lMargin;
          $y = $options['position']['y'] + $this->tMargin;
          break;
        case 'top_right':
          $x = $options['position']['x'] + $pageDim['wk'] - $this->rMargin;
          $y = $options['position']['y'] + $this->tMargin;
          break;
        case 'bottom_left':
          $x = $options['position']['x'] + $this->rMargin;
          $y = $options['position']['y'] + $pageDim['hk'] - $this->bMargin;
          break;
        case 'bottom_right':
          $x = $options['position']['x'] + $pageDim['wk'] - $this->rMargin;
          $y = $options['position']['y'] + $pageDim['hk'] - $this->bMargin;
          break;
      }
    }
    elseif ($options['position']['object'] == 'self' or preg_match('/field\\_(.*)/', $options['position']['object'], $rs)) {
      if ($options['position']['object'] == 'last') {
        $relative_to_element = $this->lastWritingElement;
      }
      elseif ($options['position']['object'] == 'self') {
        $relative_to_element = $key;
      }
      else {
        $relative_to_element = $rs[1];
      }
      if (isset($this->elements[$relative_to_element])) {
        switch ($options['position']['corner']) {
          default:
          case 'top_left':
            $x = $options['position']['x'] + $this->elements[$relative_to_element]['x'];
            $y = $options['position']['y'] + $this->elements[$relative_to_element]['y'];
            break;
          case 'top_right':
            $x = $options['position']['x'] + $this->elements[$relative_to_element]['x'] + $this->elements[$relative_to_element]['width'];
            $y = $options['position']['y'] + $this->elements[$relative_to_element]['y'];
            break;
          case 'bottom_left':
            $x = $options['position']['x'] + $this->elements[$relative_to_element]['x'];
            $y = $options['position']['y'] + $this->elements[$relative_to_element]['y'] + $this->elements[$relative_to_element]['height'];
            break;
          case 'bottom_right':
            $x = $options['position']['x'] + $this->elements[$relative_to_element]['x'] + $this->elements[$relative_to_element]['width'];
            $y = $options['position']['y'] + $this->elements[$relative_to_element]['y'] + $this->elements[$relative_to_element]['height'];
            break;
        }

        // Handle if the relative element is on another page. So using the
        // the last writing position instead for y.
        if ($this
          ->getPage() != $this->elements[$relative_to_element]['page'] && $options['position']['object'] != 'self') {
          $this
            ->setPage($this->elements[$relative_to_element]['page']);
        }
        elseif ($this
          ->getPage() != $this->elements[$relative_to_element]['page'] && $options['position']['object'] == 'self') {
          $y = $y - $this->elements[$relative_to_element]['y'] + $last_writing_y_position;
          $this
            ->SetPage($this->lastWritingPage);
        }
      }
      else {
        $x = $this->x;
        $y = $last_writing_y_position;
      }
    }
    else {

      // No position match (for example header/footer)
      // Render or return
      if (is_object($view) && $key != NULL) {
        $content = $view->field[$key]
          ->theme($row);
      }
      else {
        return;
      }
    }
    if ($key !== NULL && $view->field[$key]
      ->theme($row) || !empty($row)) {
      $this
        ->SetX($x);
      $this
        ->SetY($y);
      $this
        ->renderRow($x, $y, $row, $options, $view, $key, $printLabels);
    }
  }
  protected function renderRow($x, $y, $row, $options, &$view = NULL, $key = NULL, $printLabels = TRUE) {
    $pageDim = $this
      ->getPageDimensions();

    // Render the content if it is not already:
    if (is_object($view) && $key != NULL && isset($view->field[$key]) && is_object($view->field[$key])) {
      $content = $view->field[$key]
        ->theme($row);
    }
    elseif (is_string($row)) {
      $content = $row;
    }
    else {

      // We got bad data. So return.
      return;
    }
    if (!empty($view->field[$key]->options['exclude']) || empty($content) && $view->field[$key]->options['hide_empty']) {
      return '';
    }

    // Apply the hyphenation patterns to the content:
    if (!isset($options['text']['hyphenate']) && is_object($view) && is_object($view->display_handler)) {
      $options['text']['hyphenate'] = $view->display_handler
        ->get_option('default_text_hyphenate');
    }
    if (isset($options['text']['hyphenate']) && $options['text']['hyphenate'] != 'none') {
      $patternFile = $options['text']['hyphenate'];
      if ($options['text']['hyphenate'] == 'auto' && is_object($row)) {

        // Workaround:
        // Since "$nodeLanguage = $row->node_language;" does not work anymore,
        // we using this:
        if (isset($row->_field_data['nid']['entity']->language)) {
          $nodeLanguage = $row->_field_data['nid']['entity']->language;
          foreach (self::getAvailableHyphenatePatterns() as $file => $pattern) {
            if (stristr($pattern, $nodeLanguage) !== FALSE) {
              $patternFile = $file;
              break;
            }
          }
        }
      }
      $patternFile = views_pdf_get_library('tcpdf') . '/hyphenate_patterns/' . $patternFile;
      if (file_exists($patternFile)) {
        if (method_exists('TCPDF_STATIC', 'getHyphenPatternsFromTEX')) {
          $hyphen_patterns = TCPDF_STATIC::getHyphenPatternsFromTEX($patternFile);
        }
        else {
          $hyphen_patterns = $this
            ->getHyphenPatternsFromTEX($patternFile);
        }

        // Bugfix if you like to print some html code to the PDF, we
        // need to prevent the replacement of this tags.
        $content = str_replace('&gt;', '&amp;gt;', $content);
        $content = str_replace('&lt;', '&amp;lt;', $content);
        $content = $this
          ->hyphenateText($content, $hyphen_patterns);
      }
    }

    // Set css variable
    if (is_object($view) && is_object($view->display_handler)) {
      $css_file = $view->display_handler
        ->get_option('css_file');
    }

    // Render Labels
    $prefix = '';
    if ($printLabels && !empty($view->field[$key]->options['label'])) {
      $prefix = $view->field[$key]->options['label'];
      if ($view->field[$key]->options['element_label_colon']) {
        $prefix .= ':';
      }
      $prefix .= ' ';
    }
    $font_size = empty($options['text']['font_size']) ? $this->defaultFontSize : $options['text']['font_size'];
    $font_family = $options['text']['font_family'] == 'default' || empty($options['text']['font_family']) ? $this->defaultFontFamily : $options['text']['font_family'];
    $font_style = is_array($options['text']['font_style']) ? $options['text']['font_style'] : $this->defaultFontStyle;
    $textColor = !empty($options['text']['color']) ? $this
      ->parseColor($options['text']['color']) : $this
      ->parseColor($this->defaultFontColor);
    $w = $options['position']['width'];
    $h = $options['position']['height'];
    $border = 0;
    $align = isset($options['text']['align']) ? $options['text']['align'] : $this->defaultTextAlign;
    $fill = 0;
    $ln = 1;
    $reseth = TRUE;
    $stretch = 0;
    $ishtml = isset($options['render']['is_html']) ? $options['render']['is_html'] : 1;
    $stripHTML = !$ishtml;
    $autopadding = TRUE;
    $maxh = 0;
    $valign = 'T';
    $fitcell = FALSE;

    // Run eval before.
    if ($options['render']['bypass_eval_before'] && !empty($options['render']['eval_before'])) {
      eval($options['render']['eval_before']);
    }
    elseif (!empty($options['render']['eval_before'])) {
      $content = php_eval($options['render']['eval_before']);
    }

    // Add css if there is a css file set and stripHTML is not active.
    if (!empty($css_file) && is_string($css_file) && !$stripHTML && $ishtml && !empty($content)) {
      $content = '<link type="text/css" rel="stylesheet" media="all" href="' . $css_file . '" />' . PHP_EOL . $content;
    }

    // Set Text Color.
    $this
      ->SetTextColorArray($textColor);

    // Set font.
    $this
      ->SetFont($font_family, implode('', $font_style), $font_size);

    // Save the last page before starting writing, this
    // is needed to dected if we write over a page. Then we need
    // to reset the y coordinate for the 'last_writing' position option.
    $this->lastWritingPage = $this
      ->getPage();
    if ($stripHTML) {
      $content = strip_tags($content);
    }

    // Write the content of a field to the pdf file:
    $this
      ->MultiCell($w, $h, $prefix . $content, $border, $align, $fill, $ln, $x, $y, $reseth, $stretch, $ishtml, $autopadding, $maxh, $valign, $fitcell);

    // Reset font to default.
    $this
      ->SetFont($this->defaultFontFamily, implode('', $this->defaultFontStyle), $this->defaultFontSize);

    // Run eval after.
    if ($options['render']['bypass_eval_after'] && !empty($options['render']['eval_alter'])) {
      eval($options['render']['eval_after']);
    }
    elseif (!empty($options['render']['eval_alter'])) {
      $content = php_eval($options['render']['eval_after']);
    }

    // Write Coordinates of element.
    $this->elements[$key] = [
      'x' => $x,
      'y' => $y,
      'width' => empty($w) ? $pageDim['wk'] - $this->rMargin - $x : $w,
      'height' => $this->y - $y,
      'page' => $this->lastWritingPage,
    ];
    $this->lastWritingElement = $key;
  }

  /**
   * This method draws a table on the PDF.
   */
  public function drawTable(&$view, $options) {
    $rows = $view->result;
    $columns = $view->field;
    $pageDim = $this
      ->getPageDimensions();

    // Set draw point to the indicated position:
    if (empty($options['position']['x'])) {
      $options['position']['x'] = 0;
    }
    if (empty($options['position']['y'])) {
      $options['position']['y'] = 0;
    }
    if (isset($options['position']['last_writing_position']) && $options['position']['last_writing_position']) {
      $y = $options['position']['y'] + $this->y;
      $x = $options['position']['x'] + $this->x;
    }
    else {
      $y = $options['position']['y'];
      $x = $options['position']['x'];
    }
    if (isset($options['position']['width']) && !empty($options['position']['width'])) {
      $width = $options['position']['width'];
    }
    else {
      $width = $pageDim['wk'] - $this->rMargin - $x;
    }
    $sumWidth = 0;
    $numberOfColumnsWithoutWidth = 0;

    // Set the definitiv width of a column
    foreach ($columns as $id => $columnName) {
      if (isset($options['info'][$id]['position']['width']) && !empty($options['info'][$id]['position']['width'])) {
        $sumWidth += $options['info'][$id]['position']['width'];
      }
      else {
        $numberOfColumnsWithoutWidth++;
      }
    }
    if ($numberOfColumnsWithoutWidth > 0) {
      $defaultColumnWidth = ($width - $sumWidth) / $numberOfColumnsWithoutWidth;
    }
    else {
      $defaultColumnWidth = 0;
    }

    // Print header:
    $rowX = $x;
    $page = $this
      ->getPage();
    if ($page == 0) {
      $this
        ->addPage();
      $page = $this
        ->getPage();
    }
    if (!isset($options['position']['row_height']) || empty($options['position']['row_height'])) {
      $options['position']['row_height'] = 0;
    }
    foreach ($columns as $id => $column) {
      if (!empty($column->options['exclude'])) {
        continue;
      }
      if (!is_array($options['info'][$id])) {
        $options['info'][$id] = [];
      }
      $options['info'][$id] += [
        'header_style' => [],
        'body_style' => [],
      ];
      $options['info'][$id]['header_style'] += [
        'position' => [],
        'text' => [],
        'render' => [],
      ];
      $options['info'][$id]['header_style']['position'] += [
        'corner' => 'top_left',
        'x' => NULL,
        'y' => NULL,
        'object' => '',
        'width' => NULL,
        'height' => NULL,
      ];
      $options['info'][$id]['header_style']['text'] += [
        'font_family' => 'default',
        'font_style' => '',
      ];
      $options['info'][$id]['header_style']['text'] += [
        'eval_before' => '',
        'eval_after' => '',
      ];
      $options['info'][$id]['body_style'] += [
        'position' => [],
        'text' => [],
        'render' => [],
      ];
      $options['info'][$id]['body_style']['position'] += [
        'corner' => 'top_left',
        'x' => NULL,
        'y' => NULL,
        'object' => '',
        'width' => NULL,
        'height' => NULL,
      ];
      $options['info'][$id]['body_style']['text'] += [
        'font_family' => 'default',
        'font_style' => '',
      ];
      $options['info'][$id]['body_style']['text'] += [
        'eval_before' => '',
        'eval_after' => '',
      ];
      $headerOptions = $options['info'][$id]['header_style'];
      if (isset($options['info'][$id]['position']['width']) && !empty($options['info'][$id]['position']['width'])) {
        $headerOptions['position']['width'] = $options['info'][$id]['position']['width'];
      }
      else {
        $headerOptions['position']['width'] = $defaultColumnWidth;
      }
      $headerOptions['position']['object'] = 'last_position_without_reset';
      $this
        ->SetY($y);
      $this
        ->SetX($x);
      $this
        ->setPage($page);
      $this
        ->renderRow($x, $y, $column->options['label'], $headerOptions);
      $x += $headerOptions['position']['width'];
    }
    $rowY = $this->y;
    if (!isset($options['position']['row_height']) || empty($options['position']['row_height'])) {
      $options['position']['row_height'] = 0;
    }
    foreach ($rows as $row) {
      $x = $rowX;

      // Get the page dimensions
      $pageDim = $this
        ->getPageDimensions();
      if ($rowY + $this->bMargin + $options['position']['row_height'] > $pageDim['hk']) {
        $rowY = $this->tMargin;
        $this
          ->addPage();
      }
      if ($this->lastWritingPage != $this
        ->getPage()) {
        $rowY = $this->y;

        // $rowY - $pageDim['hk']
      }
      $y = $rowY;
      $page = $this
        ->getPage();
      foreach ($columns as $id => $column) {
        if (!empty($column->options['exclude']) && is_object($view->field[$id])) {

          // Render the element, but dont print the output. This
          // is required to allow the use of tokens in other fields.
          $view->field[$id]
            ->theme($row);
          continue;
        }
        $bodyOptions = $options['info'][$id]['body_style'];
        if (isset($options['info'][$id]['position']['width']) && !empty($options['info'][$id]['position']['width'])) {
          $bodyOptions['position']['width'] = $options['info'][$id]['position']['width'];
        }
        else {
          $bodyOptions['position']['width'] = $defaultColumnWidth;
        }
        $bodyOptions['position']['object'] = 'last_position';
        $this
          ->setPage($page);
        $this
          ->SetY($y);
        $this
          ->SetX($x);
        $bodyOptions['position']['height'] = 0;
        $this
          ->renderRow($x, $y, $row, $bodyOptions, $view, $id, FALSE);
        $x += $bodyOptions['position']['width'];

        // If the cell is writting over the row, we need to adjust the
        // row y position.
        if ($rowY + $options['position']['row_height'] < $this->y) {
          $rowY = $this->y - $options['position']['row_height'];
        }
      }
      $rowY += $options['position']['row_height'];
    }
    $this
      ->SetY($rowY + $options['position']['row_height']);
  }

  /**
   * This method adds a existing PDF document to the current document. If
   * the file does not exists this method will return 0. In all other cases
   * it will returns the number of the added pages.
   *
   * @param $path string Path to the file
   *
   * @return integer Number of added pages
   */
  public function addPdfDocument($path) {
    if (empty($path) || !file_exists($path)) {
      return 0;
    }
    $numberOfPages = $this
      ->setSourceFile($path);
    for ($i = 1; $i <= $numberOfPages; $i++) {
      $dim = $this
        ->getTemplateSize($i);
      $format[0] = $dim['w'];
      $format[1] = $dim['h'];
      if ($dim['w'] > $dim['h']) {
        $orientation = 'L';
      }
      else {
        $orientation = 'P';
      }
      $this
        ->setPageFormat($format, $orientation);
      parent::addPage();

      // Ensure that all new content is printed to a new page
      $this->y = 0;
      $page = $this
        ->importPage($i);
      $this
        ->useTemplate($page, 0, 0);
      $this->addNewPageBeforeNextContent = TRUE;
    }
    return $numberOfPages;
  }

  /**
   * This method resets the page number. This is useful if you want to start
   * the numbering by zero.
   */
  public function resetRowPageNumber() {
    $this->rowContentPageNumber = 0;
  }

  /**
   * This method adds a new page to the PDF.
   */
  public function addPage($path = NULL, $reset = FALSE, $numbering = 'main', $tocpage = FALSE) {

    // Do not add any new page, if we are writing
    // in the footer or header.
    if ($this->InFooter) {
      return;
    }
    $this->mainContentPageNumber++;
    $this->rowContentPageNumber++;

    // Prevent a reset without any template
    if ($reset == TRUE && (empty($path) || !file_exists($path))) {
      parent::addPage();
      $this
        ->setPageFormat($this->defaultFormat, $this->defaultOrientation);
      return;
    }
    $files = $this->defaultPageTemplateFiles;

    // Reset with new template
    if ($reset) {
      $files = [];
    }
    if ($path != NULL) {
      $files[] = [
        'path' => $path,
        'numbering' => $numbering,
      ];
    }
    $format = FALSE;
    foreach ($files as $file) {
      if (!empty($file['path']) && file_exists($file['path'])) {
        $path = realpath($file['path']);
        $numberOfPages = $this
          ->setSourceFile($path);
        if ($file['numbering'] == 'row') {
          $index = min($this->rowContentPageNumber, $numberOfPages);
        }
        else {
          $index = min($this->mainContentPageNumber, $numberOfPages);
        }
        $page = $this
          ->importPage($index);

        // ajust the page format (only for the first template)
        if ($format == FALSE) {
          $dim = $this
            ->getTemplateSize($index);
          $format[0] = $dim['w'];
          $format[1] = $dim['h'];

          //$this->setPageFormat($format);
          if ($dim['w'] > $dim['h']) {
            $orientation = 'L';
          }
          else {
            $orientation = 'P';
          }
          $this
            ->setPageFormat($format, $orientation);
          parent::addPage();
        }

        // Apply the template
        $this
          ->useTemplate($page, 0, 0);
      }
    }

    // if all paths were empty, ensure that at least the page is added
    if ($format == FALSE) {
      parent::addPage();
      $this
        ->setPageFormat($this->defaultFormat, $this->defaultOrientation);
    }
  }

  /**
   * Sets the current header and footer of the page.
   */
  public function setHeaderFooter($record, $options, $view) {

    //if ($this->getPage() > 0 && !isset($this->headerFooterData[$this->getPage()])) {
    $this->headerFooterData[$this
      ->getPage()] = $record;

    //}
    $this->headerFooterOptions = $options;
    $this->view =& $view;
  }

  /**
   * Close the document. This is called automatically by
   * \TCPDF::Output().
   */
  public function Close() {

    // Print the Header & Footer
    for ($page = 1; $page <= $this
      ->getNumPages(); $page++) {
      $this
        ->setPage($page);
      if (isset($this->headerFooterData[$page])) {
        $record = $this->headerFooterData[$page];
        if (is_array($this->headerFooterOptions['formats'])) {
          foreach ($this->headerFooterOptions['formats'] as $id => $options) {
            if ($options['position']['object'] == 'header_footer') {
              $fieldOptions = $options;
              $fieldOptions['position']['object'] = 'page';
              $this->InFooter = TRUE;

              // backup margins
              $ml = $this->lMargin;
              $mr = $this->rMargin;
              $mt = $this->tMargin;
              $this
                ->SetMargins(0, 0, 0);
              $this
                ->drawContent($record, $fieldOptions, $this->view, $id);
              $this->InFooter = FALSE;

              // restore margins
              $this
                ->SetMargins($ml, $mt, $mr);
            }
          }
        }
      }
    }

    // call parent:
    parent::Close();
  }

  /**
   * This method returns a list of current uploaded files.
   */
  public static function getAvailableTemplates() {
    if (self::$templateList != NULL) {
      return self::$templateList;
    }
    $files_path = drupal_realpath('public://');
    $template_dir = variable_get('views_pdf_template_path', 'views_pdf_templates');
    $dir = $files_path . '/' . $template_dir;
    $templatesFiles = file_scan_directory($dir, '/.pdf$/', [
      'nomask' => '/(\\.\\.?|CVS)$/',
    ], 1);
    $templates = [];
    foreach ($templatesFiles as $file) {
      $templates[$file->filename] = $file->name;
    }
    self::$templateList = $templates;
    return $templates;
  }

  /**
   * This method returns the path to a specific template.
   */
  public static function getTemplatePath($template, $row = NULL, $view = NULL) {
    if (empty($template)) {
      return '';
    }
    if ($row != NULL && $view != NULL && !preg_match('/\\.pdf/', $template)) {
      return drupal_realpath($row->field_data_field_file_node_values[0]['uri']);
    }
    $template_dir = variable_get('views_pdf_template_stream', 'public://views_pdf_templates');
    return drupal_realpath($template_dir . '/' . $template);
  }

  /**
   * This method returns a list of available fonts.
   */
  public static function getAvailableFonts() {
    if (self::$fontList !== NULL) {
      return self::$fontList;
    }

    // Get all pdf files with the font list: K_PATH_FONTS
    $fonts = file_scan_directory(self::getKPathFonts(), '/.php$/', [
      'nomask' => '/(\\.\\.?|CVS)$/',
      'recurse' => FALSE,
    ], 1);
    $cache = \Drupal::cache()
      ->get('views_pdf_cached_fonts');
    $cached_font_mapping = NULL;
    if (is_object($cache)) {
      $cached_font_mapping = $cache->data;
    }
    if (is_array($cached_font_mapping)) {
      $font_mapping = array_merge(self::$defaultFontList, $cached_font_mapping);
    }
    else {
      $font_mapping = self::$defaultFontList;
    }
    foreach ($fonts as $font) {
      $name = self::getFontNameByFileName($font->uri);
      if (isset($name)) {
        $font_mapping[$font->name] = $name;
      }
    }
    asort($font_mapping);
    \Drupal::cache()
      ->set('views_pdf_cached_fonts', $font_mapping);

    // Remove all fonts without name
    foreach ($font_mapping as $key => $font) {
      if (empty($font)) {
        unset($font_mapping[$key]);
      }
    }
    self::$fontList = $font_mapping;
    return $font_mapping;
  }

  /**
   * This method returns a cleaned up version of the font list.
   */
  public static function getAvailableFontsCleanList() {
    if (self::$fontListClean != NULL) {
      return self::$fontListClean;
    }
    $clean = self::getAvailableFonts();
    foreach ($clean as $key => $font) {

      // Unset bold, italic, italic/bold fonts
      unset($clean[$key . 'b']);
      unset($clean[$key . 'bi']);
      unset($clean[$key . 'i']);
    }
    self::$fontListClean = $clean;
    return $clean;
  }

  /**
   * This method returns a list of hyphenation patterns, that are
   * available.
   */
  public static function getAvailableHyphenatePatterns() {
    if (self::$hyphenatePatterns != NULL) {
      return self::$hyphenatePatterns;
    }
    self::$hyphenatePatterns = [];
    $files = file_scan_directory(libraries_get_path('tcpdf') . '/hyphenate_patterns', '/.tex$/', [
      'nomask' => '/(\\.\\.?|CVS)$/',
    ], 1);
    foreach ($files as $file) {
      self::$hyphenatePatterns[basename($file->uri)] = str_replace('hyph-', '', $file->name);
    }
    return self::$hyphenatePatterns;
  }

  /**
   * This method returns the name of a given font.
   */
  protected static function getFontNameByFileName($path) {
    include $path;
    if (isset($name)) {
      return $name;
    }
    else {
      return NULL;
    }
  }

}

Classes

Name	Description
ViewsPdfBase	The main class to generate the PDF.