/// <summary>
/// Encodes the specified content.
/// </summary>
/// <param name="content">The content.</param>
/// <param name="ecLevel">The ec level.</param>
/// <param name="hints">The hints.</param>
/// <returns></returns>
public static QRCode Encode(String content, ErrorCorrectionLevel ecLevel)
{
var encoding = DEFAULT_BYTE_MODE_ENCODING;
var generateECI = !DEFAULT_BYTE_MODE_ENCODING.Equals(encoding);
// Pick an encoding mode appropriate for the content. Note that this will not attempt to use
// multiple modes / segments even if that were more efficient. Twould be nice.
var mode = ChooseMode(content, encoding);
// This will store the header information, like mode and
// length, as well as "header" segments like an ECI segment.
var headerBits = new BitArray();
// Append ECI segment if applicable
if (mode == Mode.BYTE && generateECI)
{
var eci = CharacterSetECI.GetCharacterSetECIByName(encoding);
if (eci != null)
{
AppendECI(eci, headerBits);
}
}
// (With ECI in place,) Write the mode marker
AppendModeInfo(mode, headerBits);
// Collect data within the main segment, separately, to count its size if needed. Don't add it to
// main payload yet.
var dataBits = new BitArray();
AppendBytes(content, mode, dataBits, encoding);
Version version = RecommendVersion(ecLevel, mode, headerBits, dataBits);
var headerAndDataBits = new BitArray();
headerAndDataBits.AppendBitArray(headerBits);
// Find "length" of main segment and write it
var numLetters = mode == Mode.BYTE ? dataBits.SizeInBytes : content.Length;
AppendLengthInfo(numLetters, version, mode, headerAndDataBits);
// Put data together into the overall payload
headerAndDataBits.AppendBitArray(dataBits);
var ecBlocks = version.GetECBlocksForLevel(ecLevel);
var numDataBytes = version.TotalCodewords - ecBlocks.TotalECCodewords;
// Terminate the bits properly.
TerminateBits(numDataBytes, headerAndDataBits);
// Interleave data bits with error correction code.
var finalBits = InterleaveWithECBytes(headerAndDataBits,
version.TotalCodewords,
numDataBytes,
ecBlocks.NumBlocks);
var qrCode = new QRCode
{
ECLevel = ecLevel,
Mode = mode,
Version = version
};
// Choose the mask pattern and set to "qrCode".
var dimension = version.DimensionForVersion;
var matrix = new ByteMatrix(dimension, dimension);
var maskPattern = ChooseMaskPattern(finalBits, ecLevel, version, matrix);
qrCode.MaskPattern = maskPattern;
// Build the matrix and set it to "qrCode".
MatrixUtil.BuildMatrix(finalBits, ecLevel, version, maskPattern, matrix);
qrCode.Matrix = matrix;
return qrCode;
}