function textactions_keyword_filter in ImageCache Actions 6

Same name and namespace in other branches

1. 5.3 textactions.inc \textactions_keyword_filter()
2. 5.2 textactions.inc \textactions_keyword_filter()

Accept a keyword (center, top, left, etc) and return it as an offset in pixels. Called on either the x or y values.

Parameters

$value : string or int value. May be something like "20", "center", "left+20"

$current_size: int size in pixels of the range this item is to be placed in

$object_size: int size in pixels of the object to be placed

$xy: Whether the axis is on the x or the y (unused)

1 call to textactions_keyword_filter()

textactions_text2canvas_image in ./textactions.inc

Place the source image on the current background

File

./textactions.inc, line 333

Helper functions for imagecache_textactions

Code

function textactions_keyword_filter($value, $current_pixels, $new_pixels, $adj, $xy) {

  // check if we have plus or minus values
  $v = explode('+', $value);
  $v2 = explode('-', $value);
  if (!empty($v2[1])) {
    $v[1] = -intval($v2[1]);
    $v[0] = $v2[0];
  }
  switch ($v[0]) {
    case 'top':
    case 'left':
      $value = 0;
      break;
    case 'bottom':
    case 'right':
      $value = $current_pixels - $new_pixels;
      break;
    case 'center':
      $value = $current_pixels / 2 - $new_pixels / 2;
      break;
  }

  // Perform the adjustment.
  $value = $value + $adj;

  // Add any extra negative or positive.
  if (!empty($v[1])) {
    $value = $value + $v[1];
  }
  return $value;
}