1.140 class rubber

A rubber object is associated to hbox<-rubber to declare the stretchability of the box as well as its possibility to break lines. See class parbox for an overview of the document rendering primitives.

Attributes:

• rubber<-level After collecting the hbox objects for a line, all boxes that share the highest rubber<-level are used to distribute the remaining horizontal space on the line. Values used are:

  1	spaces
  2	alignment
  3	stretching lines, etc.
  

• rubber<-shrink Difficulty to get smaller. 0 implies the box does not want to get smaller (default). Higher values represent more ease to get smaller.
• rubber<-stretch Difficulty to get wider. 0 impliesthe box does not want to get wider (default). Higher values represent more ease to get wider.
• rubber<-linebreak Possibility to break a line

  @nil	Cannot start a new line
  allow	May start a new line
  force	Must start a new line

• rubber<-natural Defined natural size. If @default, the size is determined from the content.
• rubber<-minimum Minimum size. Try as hard as possible to avoid getting smaller.
• rubber<-maximum Maximum size. Try as hard as possible to avoid getting larger.

  See also @space_rubber.

1.140.1 Send methods

rubber ->initialise: level=[1..], stretch=[0..], shrink=[0..], linebreak=[{allow,force}]*

Create a rubber object initialising rubber->level, rubber->stretch, rubber->shrink and rubber->linebreak. Other useful properties are:

rubber->maximum:	Maximum size of object
rubber->minimum:	Minimum size of object
rubber->natural:	Preferred size of object