BoxTreeImpl.mesa
Mcisaac, June 25, 1987 2:43:57 pm PDT
Implementation for Displaying Mathematical Expressions
DIRECTORY
BoxTree.mesa
InternalExpr USING [EXPR],
ImagerFont USING [Extents];

BoxTree: CEDAR PROGRAM
~ BEGIN
EXPR: TYPE ~ InternalExpr.EXPR;
STYLE: TYPE ~
RECORD [
scale: REAL ← 1.0, -- scaling factor for font to normalize bounding box sizes
looks: REF ANY ← NIL -- italics, bold...
];
BoxTreeRep: TYPE ~ RECORD [
boundbox: ImagerFont.Extents, -- size of bounding box( what type should this be)
subBoxes: TYPE ~ LIST OF BOXTREE, -- list of boxes bound by this box
parentBox: TYPE ~ BOXTREE, -- parent bounding box
style: TYPE ~ STYLE, --printing size and style of font, ie italics 10point
expression: TYPE ~ EXPR -- pointer to expression bound by this box
];
;
END.