get-bounds Function

Summary

Returns the four values of the currently collected drawing extremes.

Package

graphics-ports

Signature

get-bounds pixmap-port => left, top, right, bottom

Arguments

pixmap-port⇩

A graphics port.

Values

left⇩	An integer.
top⇩	An integer.
right⇩	An integer.
bottom⇩	An integer.

Description

The function get-bounds returns the four values left, top, right, bottom of the currently collected drawing extremes in pixmap-port. The values can be used to get an image from the port.

Drawing extremes are collected by passing non-nil for the collect or relative arguments to create-pixmap-port or with-pixmap-graphics-port.

Examples

(with-pixmap-graphics-port (p1 pane width height
                            :relative t)
  (with-graphics-rotation (p1 0.123)
  (draw-rectangle p1 100 100 200 120 :filled t
                  :foreground :red)
  (get-bounds p1)))

produces the following output:

72
112
285
255

See also

create-pixmap-port
make-image-from-port
with-pixmap-graphics-port