function _textimage_imagettfbbox in Textimage 6.2

1 call to _textimage_imagettfbbox()

textimage_text_to_image in ./textimage.module

Generate an image containing text with the given parameters.

File

./textimage.module, line 771

Code

function _textimage_imagettfbbox($fontsize, $angle, $font, $text) {

  // Get standard boundary box co-ordinates.
  $coords = imagettfbbox($fontsize, 0, $font, $text);

  // Get boundary box co-ordinates for firstline of text.
  $firstline_coords = $coords;
  if (strstr($text, "\n")) {
    $lines = explode("\n", $text);
    $firstline_coords = imagettfbbox($fontsize, 0, $font, $lines[0]);
  }

  // Get boundary box co-ordinates for baseline characters.
  $baseline_coords = imagettfbbox($fontsize, 0, $font, join(drupal_map_assoc(range(33, 122), 'chr')));

  // Adjust boundary box co-ordinates.
  $yoffset = $firstline_coords[1] - $firstline_coords[5] >= $fontsize ? $baseline_coords[1] + 1 - $fontsize * 0.3 : 0;
  $coords[0] = 0;
  $coords[1] -= $yoffset;
  $coords[2] = $coords[2] - $baseline_coords[6];
  $coords[3] -= $yoffset;
  $coords[4] = $coords[4] - $baseline_coords[0];
  $coords[5] -= $yoffset;
  $coords[6] = 0;
  $coords[7] -= $yoffset;

  // Calculate rotation variables.
  $rad = deg2rad($angle);
  $sin = -sin($rad);
  $cos = cos($rad);

  // Rotate boundary box co-ordinates.
  $bbox = array();
  for ($i = 0; $i < 7; $i += 2) {
    $bbox[$i] = round($coords[$i] * $cos + $coords[$i + 1] * -$sin);
    $bbox[$i + 1] = round($coords[$i + 1] * $cos - $coords[$i] * -$sin);
  }

  // Return boundary box;
  return $bbox;
}