ExpandCanvas

Returns a pixmap with its canvas expanded (a background-coloured border added).

Syntax

• ExpandCanvas(pm, x[, y])

  • pm is a pixmap

  • x and y are non-negative integers

Description

ExpandCanvas(pm, x, y) returns pm with its canvas expanded. Specifically, x pixels of background colour are added to the left and right sides and y pixels of background colour are added to the upper and lower sides, together increasing the width of the pixmap by 2⋅x and the height by 2⋅y and leaving the original pixmap centred in the result.

If omitted, y defaults to x.

See also

• AddBorder

• ExtendBorder