function iek_gd_corner in Image effect kit 7

Add rounded corner by using the GD toolkit.

Parameters

object $image: An image object. The $image->resource, $image->info['width'], and $image->info['height'] values will be modified by this call.

array $data: An array that contains all the effect parameters. $data['radius']: radius of the corner, in pixels.

Return value

bool TRUE or FALSE, based on success.

File

./iek.gd.inc, line 87

GD2 toolkit for image manipulation within Drupal.

Code

function iek_gd_corner(stdClass $image, $data) {
  $width = $image->info['width'];
  $height = $image->info['height'];
  $radius = $data['radius'];

  // Finds unique color.
  do {
    $r = rand(0, 255);
    $g = rand(0, 255);
    $b = rand(0, 255);
  } while (imagecolorexact($image->resource, $r, $g, $b) < 0);
  $new_width = $width;
  $new_height = $height;
  $img = imagecreatetruecolor($new_width, $new_height);
  $alphacolor = imagecolorallocatealpha($img, $r, $g, $b, 127);
  imagealphablending($img, FALSE);
  imagesavealpha($img, TRUE);
  imagefilledrectangle($img, 0, 0, $new_width, $new_height, $alphacolor);
  imagefill($img, 0, 0, $alphacolor);
  imagecopyresampled($img, $image->resource, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
  imagearc($img, $radius - 1, $radius - 1, $radius * 2, $radius * 2, 180, 270, $alphacolor);
  imagefilltoborder($img, 0, 0, $alphacolor, $alphacolor);
  imagearc($img, $new_width - $radius, $radius - 1, $radius * 2, $radius * 2, 270, 0, $alphacolor);
  imagefilltoborder($img, $new_width - 1, 0, $alphacolor, $alphacolor);
  imagearc($img, $radius - 1, $new_height - $radius, $radius * 2, $radius * 2, 90, 180, $alphacolor);
  imagefilltoborder($img, 0, $new_height - 1, $alphacolor, $alphacolor);
  imagearc($img, $new_width - $radius, $new_height - $radius, $radius * 2, $radius * 2, 0, 90, $alphacolor);
  imagefilltoborder($img, $new_width - 1, $new_height - 1, $alphacolor, $alphacolor);
  imagealphablending($img, TRUE);
  imagecolortransparent($img, $alphacolor);

  // Resizes image down.
  $dst = imagecreatetruecolor($width, $height);
  imagealphablending($dst, FALSE);
  imagesavealpha($dst, TRUE);
  imagefilledrectangle($dst, 0, 0, $width, $height, $alphacolor);
  imagecopyresampled($dst, $img, 0, 0, 0, 0, $width, $height, $new_width, $new_height);

  // Update image object.
  $image->resource = $dst;
  $image->info['width'] = $width;
  $image->info['height'] = $height;
  return TRUE;
}