private function Annotate::_image_imagick_word_wrap_annotation in Imagick 8

Helper funtion to wrap text when it is to long

Parameters

Imagick $image:

ImagickDraw $draw:

string $text:

int $maxWidth:

Return value

array

File

src/Plugin/ImageToolkit/Operation/imagick/Annotate.php, line 108

Class

Annotate

Defines imagick annotate operation.

Namespace

Drupal\imagick\Plugin\ImageToolkit\Operation\imagick

Code

private function _image_imagick_word_wrap_annotation($image, $draw, $text, $maxWidth) {
  $text = trim($text);
  $words = preg_split('%\\s%', $text, -1, PREG_SPLIT_NO_EMPTY);
  $lines = [];
  $i = 0;
  $lineHeight = 0;
  while (count($words) > 0) {
    $metrics = $image
      ->queryFontMetrics($draw, implode(' ', array_slice($words, 0, ++$i)));
    $lineHeight = max($metrics['textHeight'], $lineHeight);

    // check if we have found the word that exceeds the line width
    if ($metrics['textWidth'] > $maxWidth or count($words) < $i) {

      // handle case where a single word is longer than the allowed line width (just add this as a word on its own line?)
      if ($i == 1) {
        $i++;
      }
      $lines[] = implode(' ', array_slice($words, 0, --$i));
      $words = array_slice($words, $i);
      $i = 0;
    }
  }
  return [
    $lines,
    $lineHeight,
  ];
}