Code39Reader class
Decodes Code 39 barcodes. Supports "Full ASCII Code 39" if USE_CODE_39_EXTENDED_MODE is set.
See Code93Reader
@author Sean Owen
- Inheritance
-
- Object
- OneDReader
- Code39Reader
Constructors
- Code39Reader([bool _usingCheckDigit = false, bool _extendedMode = false])
- Creates a reader that can be configured to check the last character as a check digit, or optionally attempt to decode "extended Code 39" sequences that are used to encode the full ASCII character set.
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
decode(
BinaryBitmap image, [DecodeHint? hints]) → Result -
Locates and decodes a barcode in some format within an
image. This method also acceptshints, each possibly associated to some data, which may help the implementation decode.inherited -
decodeRow(
int rowNumber, BitArray row, DecodeHint? hints) → Result -
Attempts to decode a one-dimensional barcode format given a single row of
an image.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
reset(
) → void -
Resets any internal state the implementation has after a decode, to prepare it
for reuse.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Constants
- alphabetString → const String
- asteriskEncoding → const int
-
characterEnncodings
→ const List<
int> - These represent the encodings of characters, as patterns of wide and narrow bars. The 9 least-significant bits of each int correspond to the pattern of wide and narrow, with 1s representing "wide" and 0s representing narrow.