function ctools_stylizer_image_processor::new_image in Chaos Tool Suite (ctools) 7

Same name and namespace in other branches

1. 6 includes/stylizer.inc \ctools_stylizer_image_processor::new_image()

Prepare a new image for being copied or worked on, preserving transparency.

2 calls to ctools_stylizer_image_processor::new_image()

ctools_stylizer_image_processor::command_new_from in includes/stylizer.inc

Create a new workspace using the properties of an existing workspace.

ctools_stylizer_image_processor::command_slice in includes/stylizer.inc

Take a slice out of the current workspace and save it as an image.

File

includes/stylizer.inc, line 590

Create customized CSS and images from palettes created by user input.

Class

ctools_stylizer_image_processor

Code

function &new_image(&$source, $width = NULL, $height = NULL) {
  if (!isset($width)) {
    $width = imagesx($source);
  }
  if (!isset($height)) {
    $height = imagesy($source);
  }
  $target = imagecreatetruecolor($width, $height);
  imagealphablending($target, FALSE);
  imagesavealpha($target, TRUE);
  $transparency_index = imagecolortransparent($source);

  // If we have a specific transparent color
  if ($transparency_index >= 0) {

    // Get the original image's transparent color's RGB values
    $transparent_color = imagecolorsforindex($source, $transparency_index);

    // Allocate the same color in the new image resource
    $transparency_index = imagecolorallocate($target, $transparent_color['red'], $transparent_color['green'], $transparent_color['blue']);

    // Completely fill the background of the new image with allocated color.
    imagefill($target, 0, 0, $transparency_index);

    // Set the background color for new image to transparent
    imagecolortransparent($target, $transparency_index);
  }
  else {

    // Create a new transparent color for image
    $color = imagecolorallocatealpha($target, 0, 0, 0, 127);

    // Completely fill the background of the new image with allocated color.
    imagefill($target, 0, 0, $color);
  }
  return $target;
}