decodeScrollbarThemeData static method
Decodes the given value
to an ScrollbarThemeData. This expects the given
value
to follow the structure below:
{
"crossAxisMargin": <double>,
"isAlwaysShown": <bool>,
"mainAxisMargin": <double>,
"minThumbLength": <double>,
"radius": <MaterialStatePropertyDouble<Radius>>,
"showTrackOnHover": <bool>
"thickness": <double>
}
See also:
Implementation
static ScrollbarThemeData? decodeScrollbarThemeData(
dynamic value, {
bool validate = true,
}) {
ScrollbarThemeData? result;
if (value is ScrollbarThemeData) {
result = value;
} else if (value != null) {
assert(SchemaValidator.validate(
schemaId: '$_baseSchemaUrl/scrollbar_theme_data',
value: value,
validate: validate,
));
result = ScrollbarThemeData(
crossAxisMargin: JsonClass.parseDouble(value['crossAxisMargin']),
isAlwaysShown: value['isAlwaysShown'] == null
? null
: JsonClass.parseBool(value['isAlwaysShown']),
mainAxisMargin: JsonClass.parseDouble(value['mainAxisMargin']),
minThumbLength: JsonClass.parseDouble(value['minThumbLength']),
radius: decodeRadius(
value['radius'],
validate: false,
),
showTrackOnHover: value['showTrackOnHover'] == null
? null
: JsonClass.parseBool(value['showTrackOnHover']),
thickness: decodeMaterialStatePropertyDouble(
value['thickness'],
validate: false,
),
);
}
return result;
}