5.3 DUIM-Sheets Module

<display>

Open abstract class

Summary

The class of displays.

Superclasses

<sheet>

Init-keywords

orientation:: An instance of type one-of(#"vertical", #"horizontal", #"default"). Default value: #"default".
units:: An instance of type one-of(#"device", #"mm", #"pixels"). Default value: #"device".

Library

duim-sheets

Module

duim-sheets

Description

The class of displays. An instance of <display> is an object that represents a single display (or screen) on some display server. Any sheet can be attached to an instance of <display>, and a display, and all the sheets attached to it, are associated with a <port> that is a connection to a display server.

The orientation: init-keyword is used to specify the orientation of a display.

The units: init-keyword is used to specify the units in which height and width measurements are made with respect to the display. The default is whatever units are standard for the display device (usually pixels).

Operations

The following operations are exported from the DUIM-Sheets module.

display display? display-depth display-height display-mm-height display-mm-width display-orientation
display-pixel-height display-pixels-per-point display-pixel-width display-units display-width