decodeBoxConstraints static method
Decodes the given value
into a BoxConstraints. If the value is null
then null
will be returned. Otherwise, this expects a Map like value
that in JSON would look like:
{
"maxHeight": "<double>",
"maxWidth": "<double>",
"minHeight": "<double>",
"minWidth": "<double>"
}
Implementation
static BoxConstraints? decodeBoxConstraints(
dynamic value, {
bool validate = true,
}) {
BoxConstraints? result;
if (value is BoxConstraints) {
result = value;
} else if (value != null) {
assert(SchemaValidator.validate(
schemaId: '$_baseSchemaUrl/box_constraints',
value: value,
validate: validate,
));
result = BoxConstraints(
maxHeight:
JsonClass.maybeParseDouble(value['maxHeight']) ?? double.infinity,
maxWidth:
JsonClass.maybeParseDouble(value['maxWidth']) ?? double.infinity,
minHeight: JsonClass.maybeParseDouble(value['minHeight']) ?? 0.0,
minWidth: JsonClass.maybeParseDouble(value['minWidth']) ?? 0.0,
);
}
return result;
}