$_params
$_params : array
Valid parameters for the stack effect: - images: (array) An array of Horde_Image objects to stack. Images are stacked in a FIFO manner, so that the top-most image is the last one in this array.
- type: (string) Determines the style for the composition.
'plain' or 'polaroid' are supported.
- resize_height: (integer) The height that each individual thumbnail should be resized to before composing on the image.
- padding: (integer) How much padding should we ensure is left around the active image area?
- background: (string) The background canvas color - this is used as the color to set any padding to.
- bordercolor: (string) If using type 'plain' this sets the color of the border that each individual thumbnail gets.
- borderwidth: (integer) If using type 'plain' this sets the width of the border on each individual thumbnail.
- offset: (integer) If using type 'plain' this determines the amount of x and y offset to give each successive image when it is placed on the top of the stack.