QrCode class
Constructors
new QrCode(int typeNumber, errorCorrectLevel) #
QrCode(int typeNumber, this.errorCorrectLevel) : this.typeNumber = typeNumber, moduleCount = typeNumber * 4 + 17, _modules = new List<List<bool>>() { requireArgument(typeNumber > 0 && typeNumber < 11, 'typeNumber'); requireArgument(QrErrorCorrectLevel.levels.indexOf(errorCorrectLevel) >= 0, 'errorCorrectLevel'); for (var row = 0; row < moduleCount; row++) { _modules.add(new List<bool>(moduleCount)); } _dataCache = null; _dataList = []; }
Fields
final errorCorrectLevel #
final errorCorrectLevel;
final int moduleCount #
final int moduleCount;
final typeNumber #
final typeNumber;
Methods
bool operator ==(other) #
The equality operator.
The default behavior for all Object
s is to return true if and
only if this
and
other are the same object.
If a subclass overrides the equality operator it should override
the hashCode
method as well to maintain consistency.
bool operator ==(other) => identical(this, other);
void addData(String data) #
void addData(String data) { var newData = new QrByte(data); _dataList.add(newData); _dataCache = null; }
int hashCode() #
Get a hash code for this object.
All objects have hash codes. Hash codes are guaranteed to be the
same for objects that are equal when compared using the equality
operator ==
. Other than that there are no guarantees about
the hash codes. They will not be consistent between runs and
there are no distribution guarantees.
If a subclass overrides hashCode
it should override the
equality operator as well to maintain consistency.
external int hashCode();
bool isDark(int row, int col) #
bool isDark(int row, int col) { if (row < 0 || moduleCount <= row || col < 0 || moduleCount <= col) { throw '$row , $col'; } return _modules[row][col]; }
void make() #
void make() { _makeImpl(false, _getBestMaskPattern()); }
noSuchMethod(String name, List args) #
noSuchMethod
is invoked when users invoke a non-existant method
on an object. The name of the method and the arguments of the
invocation are passed to noSuchMethod
. If noSuchMethod
returns a value, that value becomes the result of the original
invocation.
The default behavior of noSuchMethod
is to throw a
noSuchMethodError
.
external Dynamic noSuchMethod(String name, List args);
Type get runtimeType() #
A representation of the runtime type of the object.
external Type get runtimeType;
String toString() #
Returns a string representation of this object.
external String toString();