Apple Newton Programmer’s Newton 2.0 (for Newton 2.0) - Manual (Page 196)

C H A P T E R 5
Stationery
5-14 Using Stationery
Using the MinimalBounds ViewDef Method 5
The MinimalBounds method must be used in a viewDef when the size of the
entry is dynamic, as it is in a paper-roll-style or page-style application. It’s not
necessary for a card-style application, which has a fixed height; in that case you
should set a static height for your viewDef in the
viewDefHeight slot.
The MinimalBounds method is used to compute the minimal size for the
enclosing bounding box for the viewDef at run time. The following is an
example of a
MinimalBounds implementation where the viewDef contains
a newtEditView whose path slot is set to
[pathExpr:kDataSymbol,'notes] :
MinimalBounds: func(entry)
begin
local result := {left: 0, top: 0, right: 0,
bottom: viewDefHeight};
// For an editView, make the bounds big enough to
// contain all the child views.
if entry.(kDataSymbol).notes then
foreach item in entry.(kDataSymbol).notes do
result := UnionRect( result, item.viewBounds );
result;
end;