function pdf_to_imagefield_convert_pdf in PDF to ImageField 7

Same name and namespace in other branches

1. 6.2 pdf_to_imagefield.module \pdf_to_imagefield_convert_pdf()
2. 6 pdf_to_imagefield.module \pdf_to_imagefield_convert_pdf()

Convert a PDF to an image, using ImageAPI.

This is almost a copy of _imageapi_imagemagick_convert() function, with that addition of $extra argument, used to pass parameters to convert *BEFORE* source file specification. Here it is needed to set density before rendering a PDF.

Return value

bool success

3 calls to pdf_to_imagefield_convert_pdf()

pdf_to_imagefield_check_imagemagick in ./pdf_to_imagefield.module

Helper function to check if ImageMagick is ready to convert

pdf_to_imagefield_convert_pages in ./pdf_to_imagefield.module

Convert pages from pdf file to individual jpeg files

pdf_to_imagefield_generate_page in ./pdf_to_imagefield.module

Generate a single page for the given pdf file-source, according to the field settings.

File

./pdf_to_imagefield.module, line 115

PDF to ImageField core hooks and menu callbacks.

Code

function pdf_to_imagefield_convert_pdf($source, $dest, $args = array(), $extra = array()) {
  $d_arguments['quality'] = '-quality ' . escapeshellarg(variable_get('imageapi_imagemagick_quality', 75));

  // To make use of ImageMagick 6's parenthetical command grouping we need to make
  // the $source image the first parameter and $dest the last.
  // See http://www.imagemagick.org/Usage/basics/#cmdline for more info.
  $command = implode(' ', $extra) . ' ' . escapeshellarg($source) . ' ' . implode(' ', $args) . ' ' . escapeshellarg($dest);
  if (0 != _imagemagick_convert_exec($command, $output, $errors)) {
    $errors_txt = '<pre>' . (is_array($errors) ? implode("\n", $errors) : $errors) . '</pre>';
    watchdog('pdf to image: imageapi imagemagick', '!errors', array(
      '!errors' => $errors_txt,
    ), WATCHDOG_ERROR);
    return FALSE;
  }
  return file_exists($dest);
}