Stationery

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;