commit 62a7c0f32b00280a04eccb301628ba9460608953 Author: rowanhanna Date: Wed Dec 18 13:52:16 2013 +1100 First commit of source files diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 0000000..412eeda --- /dev/null +++ b/.gitattributes @@ -0,0 +1,22 @@ +# Auto detect text files and perform LF normalization +* text=auto + +# Custom for Visual Studio +*.cs diff=csharp +*.sln merge=union +*.csproj merge=union +*.vbproj merge=union +*.fsproj merge=union +*.dbproj merge=union + +# Standard to msysgit +*.doc diff=astextplain +*.DOC diff=astextplain +*.docx diff=astextplain +*.DOCX diff=astextplain +*.dot diff=astextplain +*.DOT diff=astextplain +*.pdf diff=astextplain +*.PDF diff=astextplain +*.rtf diff=astextplain +*.RTF diff=astextplain diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b9d6bd9 --- /dev/null +++ b/.gitignore @@ -0,0 +1,215 @@ +################# +## Eclipse +################# + +*.pydevproject +.project +.metadata +bin/ +tmp/ +*.tmp +*.bak +*.swp +*~.nib +local.properties +.classpath +.settings/ +.loadpath + +# External tool builders +.externalToolBuilders/ + +# Locally stored "Eclipse launch configurations" +*.launch + +# CDT-specific +.cproject + +# PDT-specific +.buildpath + + +################# +## Visual Studio +################# + +## Ignore Visual Studio temporary files, build results, and +## files generated by popular Visual Studio add-ons. + +# User-specific files +*.suo +*.user +*.sln.docstates + +# Build results + +[Dd]ebug/ +[Rr]elease/ +x64/ +build/ +[Bb]in/ +[Oo]bj/ + +# MSTest test Results +[Tt]est[Rr]esult*/ +[Bb]uild[Ll]og.* + +*_i.c +*_p.c +*.ilk +*.meta +*.obj +*.pch +*.pdb +*.pgc +*.pgd +*.rsp +*.sbr +*.tlb +*.tli +*.tlh +*.tmp +*.tmp_proj +*.log +*.vspscc +*.vssscc +.builds +*.pidb +*.log +*.scc + +# Visual C++ cache files +ipch/ +*.aps +*.ncb +*.opensdf +*.sdf +*.cachefile + +# Visual Studio profiler +*.psess +*.vsp +*.vspx + +# Guidance Automation Toolkit +*.gpState + +# ReSharper is a .NET coding add-in +_ReSharper*/ +*.[Rr]e[Ss]harper + +# TeamCity is a build add-in +_TeamCity* + +# DotCover is a Code Coverage Tool +*.dotCover + +# NCrunch +*.ncrunch* +.*crunch*.local.xml + +# Installshield output folder +[Ee]xpress/ + +# DocProject is a documentation generator add-in +DocProject/buildhelp/ +DocProject/Help/*.HxT +DocProject/Help/*.HxC +DocProject/Help/*.hhc +DocProject/Help/*.hhk +DocProject/Help/*.hhp +DocProject/Help/Html2 +DocProject/Help/html + +# Click-Once directory +publish/ + +# Publish Web Output +*.Publish.xml +*.pubxml + +# NuGet Packages Directory +## TODO: If you have NuGet Package Restore enabled, uncomment the next line +#packages/ + +# Windows Azure Build Output +csx +*.build.csdef + +# Windows Store app package directory +AppPackages/ + +# Others +sql/ +*.Cache +ClientBin/ +[Ss]tyle[Cc]op.* +~$* +*~ +*.dbmdl +*.[Pp]ublish.xml +*.pfx +*.publishsettings + +# RIA/Silverlight projects +Generated_Code/ + +# Backup & report files from converting an old project file to a newer +# Visual Studio version. Backup files are not needed, because we have git ;-) +_UpgradeReport_Files/ +Backup*/ +UpgradeLog*.XML +UpgradeLog*.htm + +# SQL Server files +App_Data/*.mdf +App_Data/*.ldf + +############# +## Windows detritus +############# + +# Windows image file caches +Thumbs.db +ehthumbs.db + +# Folder config file +Desktop.ini + +# Recycle Bin used on file shares +$RECYCLE.BIN/ + +# Mac crap +.DS_Store + + +############# +## Python +############# + +*.py[co] + +# Packages +*.egg +*.egg-info +dist/ +build/ +eggs/ +parts/ +var/ +sdist/ +develop-eggs/ +.installed.cfg + +# Installer logs +pip-log.txt + +# Unit test / coverage reports +.coverage +.tox + +#Translations +*.mo + +#Mr Developer +.mr.developer.cfg diff --git a/Source/DelphiZXIngQRCode.pas b/Source/DelphiZXIngQRCode.pas new file mode 100644 index 0000000..160bbb4 --- /dev/null +++ b/Source/DelphiZXIngQRCode.pas @@ -0,0 +1,3574 @@ +unit DelphiZXingQRCode; + +// ZXing QRCode port to Delphi, by Debenu Pty Ltd +// www.debenu.com + +// Original copyright notice +(* + * Copyright 2008 ZXing authors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + *) + +interface + +type + TQRCodeEncoding = (qrAuto, qrNumeric, qrAlphanumeric, qrISO88591, qrUTF8NoBOM, qrUTF8BOM); + T2DBooleanArray = array of array of Boolean; + + TDelphiZXingQRCode = class + protected + FData: WideString; + FRows: Integer; + FColumns: Integer; + FEncoding: TQRCodeEncoding; + FQuietZone: Integer; + FElements: T2DBooleanArray; + procedure SetEncoding(NewEncoding: TQRCodeEncoding); + procedure SetData(const NewData: WideString); + procedure SetQuietZone(NewQuietZone: Integer); + function GetIsBlack(Row, Column: Integer): Boolean; + procedure Update; + public + constructor Create; + property Data: WideString read FData write SetData; + property Encoding: TQRCodeEncoding read FEncoding write SetEncoding; + property QuietZone: Integer read FQuietZone write SetQuietZone; + property Rows: Integer read FRows; + property Columns: Integer read FColumns; + property IsBlack[Row, Column: Integer]: Boolean read GetIsBlack; + end; + +implementation + +uses + contnrs, Math, Classes; + +type + TByteArray = array of Byte; + T2DByteArray = array of array of Byte; + TIntegerArray = array of Integer; + +const + NUM_MASK_PATTERNS = 8; + + QUIET_ZONE_SIZE = 4; + + ALPHANUMERIC_TABLE: array[0..95] of Integer = ( + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 0x00-0x0f + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 0x10-0x1f + 36, -1, -1, -1, 37, 38, -1, -1, -1, -1, 39, 40, -1, 41, 42, 43, // 0x20-0x2f + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 44, -1, -1, -1, -1, -1, // 0x30-0x3f + -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, // 0x40-0x4f + 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1 // 0x50-0x5f + ); + + DEFAULT_BYTE_MODE_ENCODING = 'ISO-8859-1'; + + POSITION_DETECTION_PATTERN: array[0..6, 0..6] of Integer = ( + (1, 1, 1, 1, 1, 1, 1), + (1, 0, 0, 0, 0, 0, 1), + (1, 0, 1, 1, 1, 0, 1), + (1, 0, 1, 1, 1, 0, 1), + (1, 0, 1, 1, 1, 0, 1), + (1, 0, 0, 0, 0, 0, 1), + (1, 1, 1, 1, 1, 1, 1)); + + HORIZONTAL_SEPARATION_PATTERN: array[0..0, 0..7] of Integer = ( + (0, 0, 0, 0, 0, 0, 0, 0)); + + VERTICAL_SEPARATION_PATTERN: array[0..6, 0..0] of Integer = ( + (0), (0), (0), (0), (0), (0), (0)); + + POSITION_ADJUSTMENT_PATTERN: array[0..4, 0..4] of Integer = ( + (1, 1, 1, 1, 1), + (1, 0, 0, 0, 1), + (1, 0, 1, 0, 1), + (1, 0, 0, 0, 1), + (1, 1, 1, 1, 1)); + + // From Appendix E. Table 1, JIS0510X:2004 (p 71). The table was double-checked by komatsu. + POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE: array[0..39, 0..6] of Integer = ( + (-1, -1, -1, -1, -1, -1, -1), // Version 1 + ( 6, 18, -1, -1, -1, -1, -1), // Version 2 + ( 6, 22, -1, -1, -1, -1, -1), // Version 3 + ( 6, 26, -1, -1, -1, -1, -1), // Version 4 + ( 6, 30, -1, -1, -1, -1, -1), // Version 5 + ( 6, 34, -1, -1, -1, -1, -1), // Version 6 + ( 6, 22, 38, -1, -1, -1, -1), // Version 7 + ( 6, 24, 42, -1, -1, -1, -1), // Version 8 + ( 6, 26, 46, -1, -1, -1, -1), // Version 9 + ( 6, 28, 50, -1, -1, -1, -1), // Version 10 + ( 6, 30, 54, -1, -1, -1, -1), // Version 11 + ( 6, 32, 58, -1, -1, -1, -1), // Version 12 + ( 6, 34, 62, -1, -1, -1, -1), // Version 13 + ( 6, 26, 46, 66, -1, -1, -1), // Version 14 + ( 6, 26, 48, 70, -1, -1, -1), // Version 15 + ( 6, 26, 50, 74, -1, -1, -1), // Version 16 + ( 6, 30, 54, 78, -1, -1, -1), // Version 17 + ( 6, 30, 56, 82, -1, -1, -1), // Version 18 + ( 6, 30, 58, 86, -1, -1, -1), // Version 19 + ( 6, 34, 62, 90, -1, -1, -1), // Version 20 + ( 6, 28, 50, 72, 94, -1, -1), // Version 21 + ( 6, 26, 50, 74, 98, -1, -1), // Version 22 + ( 6, 30, 54, 78, 102, -1, -1), // Version 23 + ( 6, 28, 54, 80, 106, -1, -1), // Version 24 + ( 6, 32, 58, 84, 110, -1, -1), // Version 25 + ( 6, 30, 58, 86, 114, -1, -1), // Version 26 + ( 6, 34, 62, 90, 118, -1, -1), // Version 27 + ( 6, 26, 50, 74, 98, 122, -1), // Version 28 + ( 6, 30, 54, 78, 102, 126, -1), // Version 29 + ( 6, 26, 52, 78, 104, 130, -1), // Version 30 + ( 6, 30, 56, 82, 108, 134, -1), // Version 31 + ( 6, 34, 60, 86, 112, 138, -1), // Version 32 + ( 6, 30, 58, 86, 114, 142, -1), // Version 33 + ( 6, 34, 62, 90, 118, 146, -1), // Version 34 + ( 6, 30, 54, 78, 102, 126, 150), // Version 35 + ( 6, 24, 50, 76, 102, 128, 154), // Version 36 + ( 6, 28, 54, 80, 106, 132, 158), // Version 37 + ( 6, 32, 58, 84, 110, 136, 162), // Version 38 + ( 6, 26, 54, 82, 110, 138, 166), // Version 39 + ( 6, 30, 58, 86, 114, 142, 170) // Version 40 + ); + + // Type info cells at the left top corner. + TYPE_INFO_COORDINATES: array[0..14, 0..1] of Integer = ( + (8, 0), + (8, 1), + (8, 2), + (8, 3), + (8, 4), + (8, 5), + (8, 7), + (8, 8), + (7, 8), + (5, 8), + (4, 8), + (3, 8), + (2, 8), + (1, 8), + (0, 8) + ); + + // From Appendix D in JISX0510:2004 (p. 67) + VERSION_INFO_POLY = $1f25; // 1 1111 0010 0101 + + // From Appendix C in JISX0510:2004 (p.65). + TYPE_INFO_POLY = $537; + TYPE_INFO_MASK_PATTERN = $5412; + + + VERSION_DECODE_INFO: array[0..33] of Integer = ( + + $07C94, $085BC, $09A99, $0A4D3, $0BBF6, + $0C762, $0D847, $0E60D, $0F928, $10B78, + $1145D, $12A17, $13532, $149A6, $15683, + $168C9, $177EC, $18EC4, $191E1, $1AFAB, + $1B08E, $1CC1A, $1D33F, $1ED75, $1F250, + $209D5, $216F0, $228BA, $2379F, $24B0B, + $2542E, $26A64, $27541, $28C69); + +type + TMode = (qmTerminator, qmNumeric, qmAlphanumeric, qmStructuredAppend, + qmByte, qmECI, qmKanji, qmFNC1FirstPosition, qmFNC1SecondPosition, + qmHanzi); + +const + ModeCharacterCountBits: array[TMode] of array[0..2] of Integer = ( + (0, 0, 0), (10, 12, 14), (9, 11, 13), (0, 0, 0), (8, 16, 16), + (0, 0, 0), (8, 10, 12), (0, 0, 0), (0, 0, 0), (8, 10, 12)); + + ModeBits: array[TMode] of Integer = (0, 1, 2, 3, 4, 7, 8, 5, 9, 13); + +type + TErrorCorrectionLevel = class + private + FBits: Integer; + public + procedure Assign(Source: TErrorCorrectionLevel); + function Ordinal: Integer; + property Bits: Integer read FBits; + end; + + TECB = class + private + Count: Integer; + DataCodewords: Integer; + public + constructor Create(Count, DataCodewords: Integer); + function GetCount: Integer; + function GetDataCodewords: Integer; + end; + + TECBArray = array of TECB; + + TECBlocks = class + private + ECCodewordsPerBlock: Integer; + ECBlocks: TECBArray; + public + constructor Create(ECCodewordsPerBlock: Integer; ECBlocks: TECB); overload; + constructor Create(ECCodewordsPerBlock: Integer; ECBlocks1, ECBlocks2: TECB); overload; + destructor Destroy; override; + function GetTotalECCodewords: Integer; + function GetNumBlocks: Integer; + function GetECCodewordsPerBlock: Integer; + function GetECBlocks: TECBArray; + end; + + TByteMatrix = class + protected + Bytes: T2DByteArray; + FWidth: Integer; + FHeight: Integer; + public + constructor Create(Width, Height: Integer); + function Get(X, Y: Integer): Integer; + procedure SetBoolean(X, Y: Integer; Value: Boolean); + procedure SetInteger(X, Y: Integer; Value: Integer); + function GetArray: T2DByteArray; + procedure Assign(Source: TByteMatrix); + procedure Clear(Value: Byte); + function Hash: AnsiString; + property Width: Integer read FWidth; + property Height: Integer read FHeight; + end; + + TBitArray = class + private + Bits: array of Integer; + Size: Integer; + procedure EnsureCapacity(Size: Integer); + public + constructor Create; overload; + constructor Create(Size: Integer); overload; + function GetSizeInBytes: Integer; + function GetSize: Integer; + function Get(I: Integer): Boolean; + procedure SetBit(Index: Integer); + procedure AppendBit(Bit: Boolean); + procedure AppendBits(Value, NumBits: Integer); + procedure AppendBitArray(NewBitArray: TBitArray); + procedure ToBytes(BitOffset: Integer; Source: TByteArray; Offset, + NumBytes: Integer); + procedure XorOperation(Other: TBitArray); + end; + + TCharacterSetECI = class + + end; + + TVersion = class + private + VersionNumber: Integer; + AlignmentPatternCenters: array of Integer; + ECBlocks: array of TECBlocks; + TotalCodewords: Integer; + ECCodewords: Integer; + public + constructor Create(VersionNumber: Integer; AlignmentPatternCenters: array of Integer; ECBlocks1, ECBlocks2, ECBlocks3, ECBlocks4: TECBlocks); + destructor Destroy; override; + class function GetVersionForNumber(VersionNum: Integer): TVersion; + class function ChooseVersion(NumInputBits: Integer; ecLevel: TErrorCorrectionLevel): TVersion; + function GetTotalCodewords: Integer; + function GetECBlocksForLevel(ECLevel: TErrorCorrectionLevel): TECBlocks; + function GetDimensionForVersion: Integer; + end; + + TMaskUtil = class + public + function GetDataMaskBit(MaskPattern, X, Y: Integer): Boolean; + end; + + TQRCode = class + private + FMode: TMode; + FECLevel: TErrorCorrectionLevel; + FVersion: Integer; + FMatrixWidth: Integer; + FMaskPattern: Integer; + FNumTotalBytes: Integer; + FNumDataBytes: Integer; + FNumECBytes: Integer; + FNumRSBlocks: Integer; + FMatrix: TByteMatrix; + FQRCodeError: Boolean; + public + constructor Create; + destructor Destroy; override; + function At(X, Y: Integer): Integer; + function IsValid: Boolean; + function IsValidMaskPattern(MaskPattern: Integer): Boolean; + procedure SetMatrix(NewMatrix: TByteMatrix); + procedure SetECLevel(NewECLevel: TErrorCorrectionLevel); + procedure SetAll(VersionNum, NumBytes, NumDataBytes, NumRSBlocks, NumECBytes, MatrixWidth: Integer); + property QRCodeError: Boolean read FQRCodeError; + property Mode: TMode read FMode write FMode; + property Version: Integer read FVersion write FVersion; + property NumDataBytes: Integer read FNumDataBytes; + property NumTotalBytes: Integer read FNumTotalBytes; + property NumRSBlocks: Integer read FNumRSBlocks; + property MatrixWidth: Integer read FMatrixWidth; + property MaskPattern: Integer read FMaskPattern write FMaskPattern; + property ECLevel: TErrorCorrectionLevel read FECLevel; + end; + + TMatrixUtil = class + + private + FMatrixUtilError: Boolean; + procedure ClearMatrix(Matrix: TByteMatrix); + + procedure EmbedBasicPatterns(Version: Integer; Matrix: TByteMatrix); + procedure EmbedTypeInfo(ECLevel: TErrorCorrectionLevel; MaskPattern: Integer; Matrix: TByteMatrix); + procedure MaybeEmbedVersionInfo(Version: Integer; Matrix: TByteMatrix); + procedure EmbedDataBits(DataBits: TBitArray; MaskPattern: Integer; Matrix: TByteMatrix); + function FindMSBSet(Value: Integer): Integer; + function CalculateBCHCode(Value, Poly: Integer): Integer; + procedure MakeTypeInfoBits(ECLevel: TErrorCorrectionLevel; MaskPattern: Integer; Bits: TBitArray); + procedure MakeVersionInfoBits(Version: Integer; Bits: TBitArray); + function IsEmpty(Value: Integer): Boolean; + procedure EmbedTimingPatterns(Matrix: TByteMatrix); + procedure EmbedDarkDotAtLeftBottomCorner(Matrix: TByteMatrix); + procedure EmbedHorizontalSeparationPattern(XStart, YStart: Integer; Matrix: TByteMatrix); + procedure EmbedVerticalSeparationPattern(XStart, YStart: Integer; Matrix: TByteMatrix); + procedure EmbedPositionAdjustmentPattern(XStart, YStart: Integer; Matrix: TByteMatrix); + procedure EmbedPositionDetectionPattern(XStart, YStart: Integer; Matrix: TByteMatrix); + procedure EmbedPositionDetectionPatternsAndSeparators(Matrix: TByteMatrix); + procedure MaybeEmbedPositionAdjustmentPatterns(Version: Integer; Matrix: TByteMatrix); + public + constructor Create; + property MatrixUtilError: Boolean read FMatrixUtilError; + procedure BuildMatrix(DataBits: TBitArray; ECLevel: TErrorCorrectionLevel; Version, MaskPattern: Integer; Matrix: TByteMatrix); + end; + +function GetModeBits(Mode: TMode): Integer; +begin + Result := ModeBits[Mode]; +end; + +function GetModeCharacterCountBits(Mode: TMode; Version: TVersion): Integer; +var + Number: Integer; + Offset: Integer; +begin + Number := Version.VersionNumber; + + if (Number <= 9) then + begin + Offset := 0; + end else + if (number <= 26) then + begin + Offset := 1; + end else + begin + Offset := 2; + end; + Result := ModeCharacterCountBits[Mode][Offset]; +end; + +type + TBlockPair = class + private + FDataBytes: TByteArray; + FErrorCorrectionBytes: TByteArray; + public + constructor Create(BA1, BA2: TByteArray); + function GetDataBytes: TByteArray; + function GetErrorCorrectionBytes: TByteArray; + end; + + TGenericGFPoly = class; + + TGenericGF = class + private + FExpTable: TIntegerArray; + FLogTable: TIntegerArray; + FZero: TGenericGFPoly; + FOne: TGenericGFPoly; + FSize: Integer; + FPrimitive: Integer; + FGeneratorBase: Integer; + FInitialized: Boolean; + FPolyList: array of TGenericGFPoly; + + procedure CheckInit; + procedure Initialize; + public + class function CreateQRCodeField256: TGenericGF; + class function AddOrSubtract(A, B: Integer): Integer; + constructor Create(Primitive, Size, B: Integer); + destructor Destroy; override; + function GetZero: TGenericGFPoly; + function Exp(A: Integer): Integer; + function GetGeneratorBase: Integer; + function Inverse(A: Integer): Integer; + function Multiply(A, B: Integer): Integer; + function BuildMonomial(Degree, Coefficient: Integer): TGenericGFPoly; + end; + + TGenericGFPolyArray = array of TGenericGFPoly; + TGenericGFPoly = class + private + FField: TGenericGF; + FCoefficients: TIntegerArray; + public + constructor Create(AField: TGenericGF; ACoefficients: TIntegerArray); + destructor Destroy; override; + function Coefficients: TIntegerArray; + function Multiply(Other: TGenericGFPoly): TGenericGFPoly; + function MultiplyByMonomial(Degree, Coefficient: Integer): TGenericGFPoly; + function Divide(Other: TGenericGFPoly): TGenericGFPolyArray; + function GetCoefficients: TIntegerArray; + function IsZero: Boolean; + function GetCoefficient(Degree: Integer): Integer; + function GetDegree: Integer; + function AddOrSubtract(Other: TGenericGFPoly): TGenericGFPoly; + end; + + TReedSolomonEncoder = class + private + FField: TGenericGF; + FCachedGenerators: TObjectList; + public + constructor Create(AField: TGenericGF); + destructor Destroy; override; + procedure Encode(ToEncode: TIntegerArray; ECBytes: Integer); + function BuildGenerator(Degree: Integer): TGenericGFPoly; + end; + + TEncoder = class + private + FEncoderError: Boolean; + + function ApplyMaskPenaltyRule1Internal(Matrix: TByteMatrix; + IsHorizontal: Boolean): Integer; + function ChooseMode(const Content: WideString; var EncodeOptions: Integer): TMode; overload; + function FilterContent(const Content: WideString; Mode: TMode; EncodeOptions: Integer): WideString; + procedure Append8BitBytes(const Content: WideString; Bits: TBitArray; EncodeOptions: Integer); + + procedure AppendAlphanumericBytes(const Content: WideString; + Bits: TBitArray); + procedure AppendBytes(const Content: WideString; Mode: TMode; + Bits: TBitArray; EncodeOptions: Integer); + procedure AppendKanjiBytes(const Content: WideString; Bits: TBitArray); + procedure AppendLengthInfo(NumLetters, VersionNum: Integer; Mode: TMode; + Bits: TBitArray); + procedure AppendModeInfo(Mode: TMode; Bits: TBitArray); + procedure AppendNumericBytes(const Content: WideString; Bits: TBitArray); + function ChooseMaskPattern(Bits: TBitArray; ECLevel: TErrorCorrectionLevel; + Version: Integer; Matrix: TByteMatrix): Integer; + function GenerateECBytes(DataBytes: TByteArray; + + NumECBytesInBlock: Integer): TByteArray; + function GetAlphanumericCode(Code: Integer): Integer; + procedure GetNumDataBytesAndNumECBytesForBlockID(NumTotalBytes, + NumDataBytes, NumRSBlocks, BlockID: Integer; var NumDataBytesInBlock: TIntegerArray; + var NumECBytesInBlock: TIntegerArray); + procedure InterleaveWithECBytes(Bits: TBitArray; NumTotalBytes, + NumDataBytes, NumRSBlocks: Integer; var Result: TBitArray); + //function IsOnlyDoubleByteKanji(const Content: WideString): Boolean; + procedure TerminateBits(NumDataBytes: Integer; var Bits: TBitArray); + function CalculateMaskPenalty(Matrix: TByteMatrix): Integer; + function ApplyMaskPenaltyRule1(Matrix: TByteMatrix): Integer; + function ApplyMaskPenaltyRule2(Matrix: TByteMatrix): Integer; + function ApplyMaskPenaltyRule3(Matrix: TByteMatrix): Integer; + function ApplyMaskPenaltyRule4(Matrix: TByteMatrix): Integer; + //procedure Encode(const Content: WideString; ECLevel: TErrorCorrectionLevel; QRCode: TQRCode); overload; + procedure Encode(const Content: WideString; EncodeOptions: Integer; ECLevel: TErrorCorrectionLevel; QRCode: TQRCode); + public + constructor Create; + property EncoderError: Boolean read FEncoderError; + end; + +function TEncoder.ApplyMaskPenaltyRule1(Matrix: TByteMatrix): Integer; +begin + Result := ApplyMaskPenaltyRule1Internal(Matrix, True) + + ApplyMaskPenaltyRule1Internal(Matrix, False); +end; + +// Apply mask penalty rule 2 and return the penalty. Find 2x2 blocks with the same color and give +// penalty to them. +function TEncoder.ApplyMaskPenaltyRule2(Matrix: TByteMatrix): Integer; +var + Penalty: Integer; + TheArray: T2DByteArray; + Width: Integer; + Height: Integer; + X: Integer; + Y: Integer; + Value: Integer; +begin + Penalty := 0; + TheArray := Matrix.GetArray; + Width := Matrix.Width; + Height := Matrix.Height; + for Y := 0 to Height - 2 do + begin + for X := 0 to Width - 2 do + begin + Value := TheArray[Y][X]; + if ((Value = TheArray[Y][X + 1]) and (Value = TheArray[Y + 1][X]) and + (Value = TheArray[Y + 1][X + 1])) then + begin + Inc(Penalty, 3); + end; + end; + end; + Result := Penalty; +end; + +// Apply mask penalty rule 3 and return the penalty. Find consecutive cells of 00001011101 or +// 10111010000, and give penalty to them. If we find patterns like 000010111010000, we give +// penalties twice (i.e. 40 * 2). +function TEncoder.ApplyMaskPenaltyRule3(Matrix: TByteMatrix): Integer; +var + Penalty: Integer; + TheArray: T2DByteArray; + Width: Integer; + Height: Integer; + X: Integer; + Y: Integer; +begin + Penalty := 0; + TheArray := Matrix.GetArray; + Width := Matrix.Width; + Height := Matrix.Height; + for Y := 0 to Height - 1 do + begin + for X := 0 to Width - 1 do + begin + if ((X + 6 < Width) and + (TheArray[Y][X] = 1) and + (TheArray[Y][X + 1] = 0) and + (TheArray[Y][X + 2] = 1) and + (TheArray[Y][X + 3] = 1) and + (TheArray[Y][X + 4] = 1) and + (TheArray[Y][X + 5] = 0) and + (TheArray[Y][X + 6] = 1) and + (((X + 10 < Width) and + (TheArray[Y][X + 7] = 0) and + (TheArray[Y][X + 8] = 0) and + (TheArray[Y][X + 9] = 0) and + (TheArray[Y][X + 10] = 0)) or + ((x - 4 >= 0) and + (TheArray[Y][X - 1] = 0) and + (TheArray[Y][X - 2] = 0) and + (TheArray[Y][X - 3] = 0) and + (TheArray[Y][X - 4] = 0)))) then + begin + Inc(Penalty, 40); + end; + if ((Y + 6 < Height) and + (TheArray[Y][X] = 1) and + (TheArray[Y + 1][X] = 0) and + (TheArray[Y + 2][X] = 1) and + (TheArray[Y + 3][X] = 1) and + (TheArray[Y + 4][X] = 1) and + (TheArray[Y + 5][X] = 0) and + (TheArray[Y + 6][X] = 1) and + (((Y + 10 < Height) and + (TheArray[Y + 7][X] = 0) and + (TheArray[Y + 8][X] = 0) and + (TheArray[Y + 9][X] = 0) and + (TheArray[Y + 10][X] = 0)) or + ((Y - 4 >= 0) and + (TheArray[Y - 1][X] = 0) and + (TheArray[Y - 2][X] = 0) and + (TheArray[Y - 3][X] = 0) and + (TheArray[Y - 4][X] = 0)))) then + begin + Inc(Penalty, 40); + end; + end; + end; + Result := Penalty; +end; + +// Apply mask penalty rule 4 and return the penalty. Calculate the ratio of dark cells and give +// penalty if the ratio is far from 50%. It gives 10 penalty for 5% distance. Examples: +// - 0% => 100 +// - 40% => 20 +// - 45% => 10 +// - 50% => 0 +// - 55% => 10 +// - 55% => 20 +// - 100% => 100 +function TEncoder.ApplyMaskPenaltyRule4(Matrix: TByteMatrix): Integer; +var + NumDarkCells: Integer; + TheArray: T2DByteArray; + Width: Integer; + Height: Integer; + NumTotalCells: Integer; + DarkRatio: Double; + X: Integer; + Y: Integer; +begin + NumDarkCells := 0; + TheArray := Matrix.GetArray; + Width := Matrix.Width; + Height := matrix.Height; + for Y := 0 to Height - 1 do + begin + for X := 0 to Width - 1 do + begin + if (TheArray[Y][X] = 1) then + begin + Inc(NumDarkCells); + end; + end; + end; + numTotalCells := matrix.Height * Matrix.Width; + DarkRatio := NumDarkCells / NumTotalCells; + Result := Round(Abs((DarkRatio * 100 - 50)) / 50); +end; + +// Helper function for applyMaskPenaltyRule1. We need this for doing this calculation in both +// vertical and horizontal orders respectively. +function TEncoder.ApplyMaskPenaltyRule1Internal(Matrix: TByteMatrix; IsHorizontal: Boolean): Integer; +var + Penalty: Integer; + NumSameBitCells: Integer; + PrevBit: Integer; + TheArray: T2DByteArray; + I: Integer; + J: Integer; + Bit: Integer; + ILimit: Integer; + JLimit: Integer; +begin + Penalty := 0; + NumSameBitCells := 0; + PrevBit := -1; + // Horizontal mode: + // for (int i = 0; i < matrix.height(); ++i) { + // for (int j = 0; j < matrix.width(); ++j) { + // int bit = matrix.get(i, j); + // Vertical mode: + // for (int i = 0; i < matrix.width(); ++i) { + // for (int j = 0; j < matrix.height(); ++j) { + // int bit = matrix.get(j, i); + if (IsHorizontal) then + begin + ILimit := Matrix.Height; + JLimit := Matrix.Width; + end else + begin + ILimit := Matrix.Width; + JLimit := Matrix.Height; + end; + TheArray := Matrix.GetArray; + + for I := 0 to ILimit - 1 do + begin + for J := 0 to JLimit - 1 do + begin + if (IsHorizontal) then + begin + Bit := TheArray[I][J]; + end else + begin + Bit := TheArray[J][I]; + end; + if (Bit = PrevBit) then + begin + Inc(NumSameBitCells); + // Found five repetitive cells with the same color (bit). + // We'll give penalty of 3. + if (NumSameBitCells = 5) then + begin + Inc(Penalty, 3); + end else if (NumSameBitCells > 5) then + begin + // After five repetitive cells, we'll add the penalty one + // by one. + Inc(Penalty, 1);; + end; + end else + begin + NumSameBitCells := 1; // Include the cell itself. + PrevBit := bit; + end; + end; + NumSameBitCells := 0; // Clear at each row/column. + end; + Result := Penalty; +end; + +{ TQRCode } + +constructor TQRCode.Create; +begin + FMode := qmTerminator; + FQRCodeError := False; + FECLevel := nil; + FVersion := -1; + FMatrixWidth := -1; + FMaskPattern := -1; + FNumTotalBytes := -1; + FNumDataBytes := -1; + FNumECBytes := -1; + FNumRSBlocks := -1; + FMatrix := nil; +end; + +destructor TQRCode.Destroy; +begin + if (Assigned(FECLevel)) then + begin + FECLevel.Free; + end; + if (Assigned(FMatrix)) then + begin + FMatrix.Free; + end; + inherited; +end; + +function TQRCode.At(X, Y: Integer): Integer; +var + Value: Integer; +begin + // The value must be zero or one. + Value := FMatrix.Get(X, Y); + if (not ((Value = 0) or (Value = 1))) then + begin + FQRCodeError := True; + end; + Result := Value; +end; + +function TQRCode.IsValid: Boolean; +begin + Result := + // First check if all version are not uninitialized. + ((FECLevel <> nil) and + (FVersion <> -1) and + (FMatrixWidth <> -1) and + (FMaskPattern <> -1) and + (FNumTotalBytes <> -1) and + (FNumDataBytes <> -1) and + (FNumECBytes <> -1) and + (FNumRSBlocks <> -1) and + // Then check them in other ways.. + IsValidMaskPattern(FMaskPattern) and + (FNumTotalBytes = FNumDataBytes + FNumECBytes) and + // ByteMatrix stuff. + (Assigned(FMatrix)) and + (FMatrixWidth = FMatrix.Width) and + // See 7.3.1 of JISX0510:2004 (Fp.5). + (FMatrix.Width = FMatrix.Height)); // Must be square. +end; + +function TQRCode.IsValidMaskPattern(MaskPattern: Integer): Boolean; +begin + Result := (MaskPattern >= 0) and (MaskPattern < NUM_MASK_PATTERNS); +end; + +procedure TQRCode.SetMatrix(NewMatrix: TByteMatrix); +begin + if (Assigned(FMatrix)) then + begin + FMatrix.Free; + FMatrix := nil; + end; + FMatrix := NewMatrix; +end; + +procedure TQRCode.SetAll(VersionNum, NumBytes, NumDataBytes, NumRSBlocks, + NumECBytes, MatrixWidth: Integer); +begin + FVersion := VersionNum; + FNumTotalBytes := NumBytes; + FNumDataBytes := NumDataBytes; + FNumRSBlocks := NumRSBlocks; + FNumECBytes := NumECBytes; + FMatrixWidth := MatrixWidth; +end; + +procedure TQRCode.SetECLevel(NewECLevel: TErrorCorrectionLevel); +begin + if (Assigned(FECLevel)) then + begin + FECLevel.Free; + end; + FECLevel := TErrorCorrectionLevel.Create; + FECLevel.Assign(NewECLevel); +end; + +{ TByteMatrix } + +procedure TByteMatrix.Clear(Value: Byte); +var + X, Y: Integer; +begin + for Y := 0 to FHeight - 1 do + begin + for X := 0 to FWidth - 1 do + begin + Bytes[Y][X] := Value; + end; + end; +end; + +constructor TByteMatrix.Create(Width, Height: Integer); +var + Y: Integer; + X: Integer; +begin + FWidth := Width; + FHeight := Height; + SetLength(Bytes, Height); + for Y := 0 to Height - 1 do + begin + SetLength(Bytes[Y], Width); + for X := 0 to Width - 1 do + begin + Bytes[Y][X] := 0; + end; + end; +end; + +function TByteMatrix.Get(X, Y: Integer): Integer; +begin + if (Bytes[Y][X] = 255) then Result := -1 else Result := Bytes[Y][X]; +end; + +function TByteMatrix.GetArray: T2DByteArray; +begin + Result := Bytes; +end; + +function TByteMatrix.Hash: AnsiString; +var + X, Y: Integer; + Counter: Integer; + CC: Integer; +begin + Result := ''; + for Y := 0 to FHeight - 1 do + begin + Counter := 0; + for X := 0 to FWidth - 1 do + begin + CC := Get(X, Y); + if (CC = -1) then CC := 255; + Counter := Counter + CC; + end; + Result := Result + AnsiChar((Counter mod 26) + 65); + end; +end; + +procedure TByteMatrix.SetBoolean(X, Y: Integer; Value: Boolean); +begin + Bytes[Y][X] := Byte(Value) and $FF; +end; + +procedure TByteMatrix.SetInteger(X, Y, Value: Integer); +begin + Bytes[Y][X] := Value and $FF; +end; + +procedure TByteMatrix.Assign(Source: TByteMatrix); +var + SourceLength: Integer; +begin + SourceLength := Length(Source.Bytes); + SetLength(Bytes, SourceLength); + if (SourceLength > 0) then + begin + Move(Source.Bytes[0], Bytes[0], SourceLength); + end; + FWidth := Source.Width; + FHeight := Source.Height; +end; + +{ TEncoder } + +function TEncoder.CalculateMaskPenalty(Matrix: TByteMatrix): Integer; +var + Penalty: Integer; +begin + Penalty := 0; + Inc(Penalty, ApplyMaskPenaltyRule1(Matrix)); + Inc(Penalty, ApplyMaskPenaltyRule2(Matrix)); + Inc(Penalty, ApplyMaskPenaltyRule3(Matrix)); + Inc(Penalty, ApplyMaskPenaltyRule4(Matrix)); + Result := Penalty; +end; + +{procedure TEncoder.Encode(const Content: WideString; ECLevel: TErrorCorrectionLevel; QRCode: TQRCode); +begin + Encode(Content, ECLevel, nil, QRCode); +end;} + +procedure TEncoder.Encode(const Content: WideString; EncodeOptions: Integer; ECLevel: TErrorCorrectionLevel; QRCode: TQRCode); +var + Mode: TMode; + DataBits: TBitArray; + FinalBits: TBitArray; + HeaderBits: TBitArray; + HeaderAndDataBits: TBitArray; + Matrix: TByteMatrix; + NumLetters: Integer; + MatrixUtil: TMatrixUtil; + BitsNeeded: Integer; + ProvisionalBitsNeeded: Integer; + ProvisionalVersion: TVersion; + Version: TVersion; + ECBlocks: TECBlocks; + NumDataBytes: Integer; + Dimension: Integer; + FilteredContent: WideString; +begin + DataBits := TBitArray.Create; + HeaderBits := TBitArray.Create; + + // 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. + // Collect data within the main segment, separately, to count its size if needed. Don't add it to + // main payload yet. + + Mode := ChooseMode(Content, EncodeOptions); + FilteredContent := FilterContent(Content, Mode, EncodeOptions); + AppendBytes(FilteredContent, Mode, DataBits, EncodeOptions); + + // (With ECI in place,) Write the mode marker + AppendModeInfo(Mode, HeaderBits); + + // Hard part: need to know version to know how many bits length takes. But need to know how many + // bits it takes to know version. First we take a guess at version by assuming version will be + // the minimum, 1: + ProvisionalVersion := TVersion.GetVersionForNumber(1); + try + ProvisionalBitsNeeded := HeaderBits.GetSize + + GetModeCharacterCountBits(Mode, ProvisionalVersion) + + DataBits.GetSize; + finally + ProvisionalVersion.Free; + end; + + ProvisionalVersion := TVersion.ChooseVersion(ProvisionalBitsNeeded, ECLevel); + try + // Use that guess to calculate the right version. I am still not sure this works in 100% of cases. + BitsNeeded := HeaderBits.GetSize + + GetModeCharacterCountBits(Mode, ProvisionalVersion) + + DataBits.GetSize; + Version := TVersion.ChooseVersion(BitsNeeded, ECLevel); + finally + ProvisionalVersion.Free; + end; + + HeaderAndDataBits := TBitArray.Create; + FinalBits := TBitArray.Create; + try + HeaderAndDataBits.AppendBitArray(HeaderBits); + + // Find "length" of main segment and write it + if (Mode = qmByte) then + begin + NumLetters := DataBits.GetSizeInBytes; + end else + begin + NumLetters := Length(FilteredContent); + end; + AppendLengthInfo(NumLetters, Version.VersionNumber, Mode, HeaderAndDataBits); + // Put data together into the overall payload + HeaderAndDataBits.AppendBitArray(DataBits); + + ECBlocks := Version.GetECBlocksForLevel(ECLevel); + NumDataBytes := Version.GetTotalCodewords - ECBlocks.GetTotalECCodewords; + + // Terminate the bits properly. + TerminateBits(NumDataBytes, HeaderAndDataBits); + + // Interleave data bits with error correction code. + InterleaveWithECBytes(HeaderAndDataBits, Version.GetTotalCodewords, + NumDataBytes, ECBlocks.GetNumBlocks, FinalBits); + + // QRCode qrCode = new QRCode(); // This is passed in + + + QRCode.SetECLevel(ECLevel); + QRCode.Mode := Mode; + QRCode.Version := Version.VersionNumber; + + // Choose the mask pattern and set to "qrCode". + Dimension := Version.GetDimensionForVersion; + Matrix := TByteMatrix.Create(Dimension, Dimension); + + QRCode.MaskPattern := ChooseMaskPattern(FinalBits, ECLevel, Version.VersionNumber, Matrix); + + Matrix.Free; + Matrix := TByteMatrix.Create(Dimension, Dimension); + + // Build the matrix and set it to "qrCode". + MatrixUtil := TMatrixUtil.Create; + try + MatrixUtil.BuildMatrix(FinalBits, QRCode.ECLevel, QRCode.Version, + QRCode.MaskPattern, Matrix); + finally + MatrixUtil.Free; + end; + + QRCode.SetMatrix(Matrix); // QRCode will free the matrix + finally + DataBits.Free; + HeaderAndDataBits.Free; + FinalBits.Free; + HeaderBits.Free; + Version.Free; + end; +end; + +function TEncoder.FilterContent(const Content: WideString; Mode: TMode; + EncodeOptions: Integer): WideString; +var + X: Integer; + CanAdd: Boolean; +begin + Result := ''; + for X := 1 to Length(Content) do + begin + CanAdd := False; + if (Mode = qmNumeric) then + begin + CanAdd := (Content[X] >= '0') and (Content[X] <= '9'); + end else + if (Mode = qmAlphanumeric) then + begin + CanAdd := GetAlphanumericCode(Ord(Content[X])) > 0; + end else + if (Mode = qmByte) then + begin + if (EncodeOptions = 3) then + begin + CanAdd := Ord(Content[X]) <= $FF; + end else + if ((EncodeOptions = 4) or (EncodeOptions = 5)) then + begin + CanAdd := True; + end; + end; + if (CanAdd) then + begin + Result := Result + Content[X]; + end; + end; +end; + +// Return the code point of the table used in alphanumeric mode or +// -1 if there is no corresponding code in the table. +function TEncoder.GetAlphanumericCode(Code: Integer): Integer; +begin + if (Code < Length(ALPHANUMERIC_TABLE)) then + begin + Result := ALPHANUMERIC_TABLE[Code]; + end else + begin + Result := -1; + end; +end; + +// Choose the mode based on the content +function TEncoder.ChooseMode(const Content: WideString; var EncodeOptions: Integer): TMode; +var + AllNumeric: Boolean; + AllAlphanumeric: Boolean; + AllISO: Boolean; + I: Integer; + C: WideChar; +begin + if (EncodeOptions = 0) then + begin + AllNumeric := Length(Content) > 0; + I := 1; + while (I <= Length(Content)) and (AllNumeric) do + begin + C := Content[I]; + if ((C < '0') or (C > '9')) then + begin + AllNumeric := False; + end else + begin + Inc(I); + end; + end; + + if (not AllNumeric) then + begin + AllAlphanumeric := Length(Content) > 0; + I := 1; + while (I <= Length(Content)) and (AllAlphanumeric) do + begin + C := Content[I]; + if (GetAlphanumericCode(Ord(C)) < 0) then + begin + AllAlphanumeric := False; + end else + begin + Inc(I); + end; + end; + end else + begin + AllAlphanumeric := False; + end; + + if (not AllAlphanumeric) then + begin + AllISO := Length(Content) > 0; + I := 1; + while (I <= Length(Content)) and (AllISO) do + begin + C := Content[I]; + if (Ord(C) > $FF) then + begin + AllISO := False; + end else + begin + Inc(I); + end; + end; + end else + begin + AllISO := False; + end; + + if (AllNumeric) then + begin + Result := qmNumeric; + end else + if (AllAlphanumeric) then + begin + Result := qmAlphanumeric; + end else + if (AllISO) then + begin + Result := qmByte; + EncodeOptions := 3; + end else + begin + Result := qmByte; + EncodeOptions := 4; + end; + end else + if (EncodeOptions = 1) then + begin + Result := qmNumeric; + end else + if (EncodeOptions = 2) then + begin + Result := qmAlphanumeric; + end else + begin + Result := qmByte; + end; +end; + +constructor TEncoder.Create; +begin + FEncoderError := False; +end; + +{function TEncoder.IsOnlyDoubleByteKanji(const Content: WideString): Boolean; +var + I: Integer; + Char1: Integer; +begin + Result := True; + I := 0; + while ((I < Length(Content)) and Result) do + begin + Char1 := Ord(Content[I + 1]); + if (((Char1 < $81) or (Char1 > $9F)) and ((Char1 < $E0) or (Char1 > $EB))) then + begin + Result := False; + end; + end; +end;} + +function TEncoder.ChooseMaskPattern(Bits: TBitArray; ECLevel: TErrorCorrectionLevel; Version: Integer; Matrix: TByteMatrix): Integer; +var + MinPenalty: Integer; + BestMaskPattern: Integer; + MaskPattern: Integer; + MatrixUtil: TMatrixUtil; + Penalty: Integer; +begin + MinPenalty := MaxInt; + BestMaskPattern := -1; + + // We try all mask patterns to choose the best one. + for MaskPattern := 0 to NUM_MASK_PATTERNS - 1 do + begin + MatrixUtil := TMatrixUtil.Create; + try + MatrixUtil.BuildMatrix(Bits, ECLevel, Version, MaskPattern, Matrix); + finally + MatrixUtil.Free; + end; + Penalty := CalculateMaskPenalty(Matrix); + if (Penalty < MinPenalty) then + begin + MinPenalty := Penalty; + BestMaskPattern := MaskPattern; + end; + end; + + Result := BestMaskPattern; +end; + +// Terminate bits as described in 8.4.8 and 8.4.9 of JISX0510:2004 (p.24). +procedure TEncoder.TerminateBits(NumDataBytes: Integer; var Bits: TBitArray); +var + Capacity: Integer; + I: Integer; + NumBitsInLastByte: Integer; + NumPaddingBytes: Integer; +begin + Capacity := NumDataBytes shl 3; + if (Bits.GetSize > Capacity) then + begin + FEncoderError := True; + Exit; + end; + I := 0; + while ((I < 4) and (Bits.GetSize < capacity)) do + begin + Bits.AppendBit(False); + Inc(I); + end; + + // Append termination bits. See 8.4.8 of JISX0510:2004 (p.24) for details. + // If the last byte isn't 8-bit aligned, we'll add padding bits. + NumBitsInLastByte := Bits.GetSize and $07; + if (NumBitsInLastByte > 0) then + begin + for I := numBitsInLastByte to 7 do + begin + Bits.AppendBit(False); + end; + end; + + // If we have more space, we'll fill the space with padding patterns defined in 8.4.9 (p.24). + NumPaddingBytes := NumDataBytes - Bits.GetSizeInBytes; + for I := 0 to NumPaddingBytes - 1 do + begin + if ((I and $01) = 0) then + begin + Bits.AppendBits($EC, 8); + end else + begin + Bits.AppendBits($11, 8); + end; + end; + if (Bits.GetSize <> Capacity) then + begin + FEncoderError := True; + end; +end; + +// Get number of data bytes and number of error correction bytes for block id "blockID". Store +// the result in "numDataBytesInBlock", and "numECBytesInBlock". See table 12 in 8.5.1 of +// JISX0510:2004 (p.30) +procedure TEncoder.GetNumDataBytesAndNumECBytesForBlockID(NumTotalBytes, NumDataBytes, + NumRSBlocks, BlockID: Integer; var NumDataBytesInBlock: TIntegerArray; + var NumECBytesInBlock: TIntegerArray); +var + NumRSBlocksInGroup1: Integer; + NumRSBlocksInGroup2: Integer; + NumTotalBytesInGroup1: Integer; + NumTotalBytesInGroup2: Integer; + NumDataBytesInGroup1: Integer; + NumDataBytesInGroup2: Integer; + NumECBytesInGroup1: Integer; + NumECBytesInGroup2: Integer; +begin + if (BlockID >= NumRSBlocks) then + begin + FEncoderError := True; + Exit; + end; + // numRsBlocksInGroup2 = 196 % 5 = 1 + NumRSBlocksInGroup2 := NumTotalBytes mod NumRSBlocks; + // numRsBlocksInGroup1 = 5 - 1 = 4 + NumRSBlocksInGroup1 := NumRSBlocks - NumRSBlocksInGroup2; + // numTotalBytesInGroup1 = 196 / 5 = 39 + NumTotalBytesInGroup1 := NumTotalBytes div NumRSBlocks; + // numTotalBytesInGroup2 = 39 + 1 = 40 + NumTotalBytesInGroup2 := NumTotalBytesInGroup1 + 1; + // numDataBytesInGroup1 = 66 / 5 = 13 + NumDataBytesInGroup1 := NumDataBytes div NumRSBlocks; + // numDataBytesInGroup2 = 13 + 1 = 14 + NumDataBytesInGroup2 := NumDataBytesInGroup1 + 1; + // numEcBytesInGroup1 = 39 - 13 = 26 + NumECBytesInGroup1 := NumTotalBytesInGroup1 - NumDataBytesInGroup1; + // numEcBytesInGroup2 = 40 - 14 = 26 + NumECBytesInGroup2 := NumTotalBytesInGroup2 - NumDataBytesInGroup2; + // Sanity checks. + // 26 = 26 + if (NumECBytesInGroup1 <> NumECBytesInGroup2) then + begin + FEncoderError := True; + Exit; + end; + // 5 = 4 + 1. + if (NumRSBlocks <> (NumRSBlocksInGroup1 + NumRSBlocksInGroup2)) then + begin + FEncoderError := True; + Exit; + end; + // 196 = (13 + 26) * 4 + (14 + 26) * 1 + if (NumTotalBytes <> + ((NumDataBytesInGroup1 + NumECBytesInGroup1) * NumRsBlocksInGroup1) + + ((NumDataBytesInGroup2 + NumECBytesInGroup2) * NumRsBlocksInGroup2)) then + begin + FEncoderError := True; + Exit; + end; + + if (BlockID < NumRSBlocksInGroup1) then + begin + NumDataBytesInBlock[0] := NumDataBytesInGroup1; + NumECBytesInBlock[0] := numECBytesInGroup1; + end else + begin + NumDataBytesInBlock[0] := NumDataBytesInGroup2; + NumECBytesInBlock[0] := numEcBytesInGroup2; + end; +end; + +// Interleave "bits" with corresponding error correction bytes. On success, store the result in +// "result". The interleave rule is complicated. See 8.6 of JISX0510:2004 (p.37) for details. +procedure TEncoder.InterleaveWithECBytes(Bits: TBitArray; NumTotalBytes, + NumDataBytes, NumRSBlocks: Integer; var Result: TBitArray); +var + DataBytesOffset: Integer; + MaxNumDataBytes: Integer; + MaxNumECBytes: Integer; + Blocks: TObjectList; + NumDataBytesInBlock: TIntegerArray; + NumECBytesInBlock: TIntegerArray; + Size: Integer; + DataBytes: TByteArray; + ECBytes: TByteArray; + I, J: Integer; + BlockPair: TBlockPair; +begin + SetLength(ECBytes, 0); + + // "bits" must have "getNumDataBytes" bytes of data. + if (Bits.GetSizeInBytes <> NumDataBytes) then + begin + FEncoderError := True; + Exit; + end; + + // Step 1. Divide data bytes into blocks and generate error correction bytes for them. We'll + // store the divided data bytes blocks and error correction bytes blocks into "blocks". + DataBytesOffset := 0; + MaxNumDataBytes := 0; + MaxNumEcBytes := 0; + + // Since, we know the number of reedsolmon blocks, we can initialize the vector with the number. + Blocks := TObjectList.Create(True); + try + Blocks.Capacity := NumRSBlocks; + + for I := 0 to NumRSBlocks - 1 do + begin + SetLength(NumDataBytesInBlock, 1); + SetLength(NumECBytesInBlock, 1); + GetNumDataBytesAndNumECBytesForBlockID( + NumTotalBytes, NumDataBytes, NumRSBlocks, I, + NumDataBytesInBlock, NumEcBytesInBlock); + + Size := NumDataBytesInBlock[0]; + SetLength(DataBytes, Size); + Bits.ToBytes(8 * DataBytesOffset, DataBytes, 0, Size); + ECBytes := GenerateECBytes(DataBytes, NumEcBytesInBlock[0]); + BlockPair := TBlockPair.Create(DataBytes, ECBytes); + Blocks.Add(BlockPair); + + MaxNumDataBytes := Max(MaxNumDataBytes, Size); + MaxNumECBytes := Max(MaxNumECBytes, Length(ECBytes)); + Inc(DataBytesOffset, NumDataBytesInBlock[0]); + end; + if (NumDataBytes <> DataBytesOffset) then + begin + FEncoderError := True; + Exit; + end; + + // First, place data blocks. + for I := 0 to MaxNumDataBytes - 1 do + begin + for J := 0 to Blocks.Count - 1 do + begin + DataBytes := TBlockPair(Blocks.Items[J]).GetDataBytes; + if (I < Length(DataBytes)) then + begin + Result.AppendBits(DataBytes[I], 8); + end; + end; + end; + // Then, place error correction blocks. + for I := 0 to MaxNumECBytes - 1 do + begin + for J := 0 to Blocks.Count - 1 do + begin + ECBytes := TBlockPair(Blocks.Items[J]).GetErrorCorrectionBytes; + if (I < Length(ECBytes)) then + begin + Result.AppendBits(ECBytes[I], 8); + end; + end; + end; + finally + Blocks.Free; + end; + if (numTotalBytes <> Result.GetSizeInBytes) then // Should be same. + begin + FEncoderError := True; + Exit; + end; +end; + +function TEncoder.GenerateECBytes(DataBytes: TByteArray; NumECBytesInBlock: Integer): TByteArray; +var + NumDataBytes: Integer; + ToEncode: TIntegerArray; + ReedSolomonEncoder: TReedSolomonEncoder; + I: Integer; + ECBytes: TByteArray; + GenericGF: TGenericGF; +begin + NumDataBytes := Length(DataBytes); + SetLength(ToEncode, NumDataBytes + NumECBytesInBlock); + + for I := 0 to NumDataBytes - 1 do + begin + ToEncode[I] := DataBytes[I] and $FF; + end; + + GenericGF := TGenericGF.CreateQRCodeField256; + try + ReedSolomonEncoder := TReedSolomonEncoder.Create(GenericGF); + try + ReedSolomonEncoder.Encode(ToEncode, NumECBytesInBlock); + finally + ReedSolomonEncoder.Free; + end; + finally + GenericGF.Free; + end; + + SetLength(ECBytes, NumECBytesInBlock); + for I := 0 to NumECBytesInBlock - 1 do + begin + ECBytes[I] := ToEncode[NumDataBytes + I]; + end; + + Result := ECBytes; +end; + +// Append mode info. On success, store the result in "bits". +procedure TEncoder.AppendModeInfo(Mode: TMode; Bits: TBitArray); +begin + Bits.AppendBits(GetModeBits(Mode), 4); +end; + +// Append length info. On success, store the result in "bits". +procedure TEncoder.AppendLengthInfo(NumLetters, VersionNum: Integer; Mode: TMode; Bits: TBitArray); +var + NumBits: Integer; + Version: TVersion; +begin + Version := TVersion.GetVersionForNumber(VersionNum); + try + NumBits := GetModeCharacterCountBits(Mode, Version); + finally + Version.Free; + end; + + if (NumLetters > ((1 shl NumBits) - 1)) then + begin + FEncoderError := True; + Exit; + end; + + Bits.AppendBits(NumLetters, NumBits); +end; + +// Append "bytes" in "mode" mode (encoding) into "bits". On success, store the result in "bits". +procedure TEncoder.AppendBytes(const Content: WideString; Mode: TMode; Bits: TBitArray; EncodeOptions: Integer); +begin + if (Mode = qmNumeric) then + begin + AppendNumericBytes(Content, Bits); + end else + if (Mode = qmAlphanumeric) then + begin + AppendAlphanumericBytes(Content, Bits); + end else + if (Mode = qmByte) then + begin + Append8BitBytes(Content, Bits, EncodeOptions); + end else + if (Mode = qmKanji) then + begin + AppendKanjiBytes(Content, Bits); + end else + begin + FEncoderError := True; + Exit; + end; +end; + +procedure TEncoder.AppendNumericBytes(const Content: WideString; Bits: TBitArray); +var + ContentLength: Integer; + I: Integer; + Num1: Integer; + Num2: Integer; + Num3: Integer; +begin + ContentLength := Length(Content); + I := 0; + while (I < ContentLength) do + begin + Num1 := Ord(Content[I + 0 + 1]) - Ord('0'); + if (I + 2 < ContentLength) then + begin + // Encode three numeric letters in ten bits. + Num2 := Ord(Content[I + 1 + 1]) - Ord('0'); + Num3 := Ord(Content[I + 2 + 1]) - Ord('0'); + Bits.AppendBits(Num1 * 100 + Num2 * 10 + Num3, 10); + Inc(I, 3); + end else + if (I + 1 < ContentLength) then + begin + // Encode two numeric letters in seven bits. + Num2 := Ord(Content[I + 1 + 1]) - Ord('0'); + Bits.AppendBits(Num1 * 10 + Num2, 7); + Inc(I, 2); + end else + begin + // Encode one numeric letter in four bits. + Bits.AppendBits(Num1, 4); + Inc(I); + end; + end; +end; + +procedure TEncoder.AppendAlphanumericBytes(const Content: WideString; Bits: TBitArray); +var + ContentLength: Integer; + I: Integer; + Code1: Integer; + Code2: Integer; +begin + ContentLength := Length(Content); + I := 0; + while (I < ContentLength) do + begin + Code1 := GetAlphanumericCode(Ord(Content[I + 0 + 1])); + if (Code1 = -1) then + begin + FEncoderError := True; + Exit; + end; + if (I + 1 < ContentLength) then + begin + Code2 := GetAlphanumericCode(Ord(Content[I + 1 + 1])); + if (Code2 = -1) then + begin + FEncoderError := True; + Exit; + end; + // Encode two alphanumeric letters in 11 bits. + Bits.AppendBits(Code1 * 45 + Code2, 11); + Inc(I, 2); + end else + begin + // Encode one alphanumeric letter in six bits. + Bits.AppendBits(Code1, 6); + Inc(I); + end; + end; +end; + +procedure TEncoder.Append8BitBytes(const Content: WideString; Bits: TBitArray; EncodeOptions: Integer); +var + Bytes: TByteArray; + I: Integer; + UTF8Version: AnsiString; +begin + SetLength(Bytes, 0); + if (EncodeOptions = 3) then + begin + SetLength(Bytes, Length(Content)); + for I := 1 to Length(Content) do + begin + Bytes[I - 1] := Ord(Content[I]) and $FF; + end; + end else + if (EncodeOptions = 4) then + begin + // Add the UTF-8 BOM + UTF8Version := #$EF#$BB#$BF + UTF8Encode(Content); + SetLength(Bytes, Length(UTF8Version)); + if (Length(UTF8Version) > 0) then + begin + Move(UTF8Version[1], Bytes[0], Length(UTF8Version)); + end; + end else + if (EncodeOptions = 5) then + begin + // No BOM + UTF8Version := UTF8Encode(Content); + SetLength(Bytes, Length(UTF8Version)); + if (Length(UTF8Version) > 0) then + begin + Move(UTF8Version[1], Bytes[0], Length(UTF8Version)); + end; + end; + for I := 0 to Length(Bytes) - 1 do + begin + Bits.AppendBits(Bytes[I], 8); + end; +end; + +procedure TEncoder.AppendKanjiBytes(const Content: WideString; Bits: TBitArray); +var + Bytes: TByteArray; + ByteLength: Integer; + I: Integer; + Byte1: Integer; + Byte2: Integer; + Code: Integer; + Subtracted: Integer; + Encoded: Integer; +begin + SetLength(Bytes, 0); + try + + except + FEncoderError := True; + Exit; + end; + + ByteLength := Length(Bytes); + I := 0; + while (I < ByteLength) do + begin + Byte1 := Bytes[I] and $FF; + Byte2 := Bytes[I + 1] and $FF; + Code := (Byte1 shl 8) or Byte2; + Subtracted := -1; + if ((Code >= $8140) and (Code <= $9ffc)) then + begin + Subtracted := Code - $8140; + end else + if ((Code >= $e040) and (Code <= $ebbf)) then + begin + Subtracted := Code - $c140; + end; + if (Subtracted = -1) then + begin + FEncoderError := True; + Exit; + end; + Encoded := ((Subtracted shr 8) * $c0) + (Subtracted and $ff); + Bits.AppendBits(Encoded, 13); + Inc(I, 2); + end; +end; + +procedure TMatrixUtil.ClearMatrix(Matrix: TByteMatrix); +begin + Matrix.Clear(Byte(-1)); +end; + +constructor TMatrixUtil.Create; +begin + FMatrixUtilError := False; +end; + +// Build 2D matrix of QR Code from "dataBits" with "ecLevel", "version" and "getMaskPattern". On +// success, store the result in "matrix" and return true. +procedure TMatrixUtil.BuildMatrix(DataBits: TBitArray; ECLevel: TErrorCorrectionLevel; + Version, MaskPattern: Integer; Matrix: TByteMatrix); +begin + ClearMatrix(Matrix); + EmbedBasicPatterns(Version, Matrix); + + // Type information appear with any version. + EmbedTypeInfo(ECLevel, MaskPattern, Matrix); + + // Version info appear if version >= 7. + MaybeEmbedVersionInfo(Version, Matrix); + + // Data should be embedded at end. + EmbedDataBits(DataBits, MaskPattern, Matrix); +end; + +// Embed basic patterns. On success, modify the matrix and return true. +// The basic patterns are: +// - Position detection patterns +// - Timing patterns +// - Dark dot at the left bottom corner +// - Position adjustment patterns, if need be +procedure TMatrixUtil.EmbedBasicPatterns(Version: Integer; Matrix: TByteMatrix); +begin + // Let's get started with embedding big squares at corners. + EmbedPositionDetectionPatternsAndSeparators(Matrix); + + // Then, embed the dark dot at the left bottom corner. + EmbedDarkDotAtLeftBottomCorner(Matrix); + + // Position adjustment patterns appear if version >= 2. + MaybeEmbedPositionAdjustmentPatterns(Version, Matrix); + + // Timing patterns should be embedded after position adj. patterns. + EmbedTimingPatterns(Matrix); +end; + +// Embed type information. On success, modify the matrix. +procedure TMatrixUtil.EmbedTypeInfo(ECLevel: TErrorCorrectionLevel; MaskPattern: Integer; Matrix: TByteMatrix); +var + TypeInfoBits: TBitArray; + I: Integer; + Bit: Boolean; + X1, Y1: Integer; + X2, Y2: Integer; +begin + TypeInfoBits := TBitArray.Create; + try + MakeTypeInfoBits(ECLevel, MaskPattern, TypeInfoBits); + + for I := 0 to TypeInfoBits.GetSize - 1 do + begin + // Place bits in LSB to MSB order. LSB (least significant bit) is the last value in + // "typeInfoBits". + Bit := TypeInfoBits.Get(TypeInfoBits.GetSize - 1 - I); + + // Type info bits at the left top corner. See 8.9 of JISX0510:2004 (p.46). + X1 := TYPE_INFO_COORDINATES[I][0]; + Y1 := TYPE_INFO_COORDINATES[I][1]; + Matrix.SetBoolean(X1, Y1, Bit); + + if (I < 8) then + begin + // Right top corner. + X2 := Matrix.Width - I - 1; + Y2 := 8; + Matrix.SetBoolean(X2, Y2, Bit); + end else + begin + // Left bottom corner. + X2 := 8; + Y2 := Matrix.Height - 7 + (I - 8); + Matrix.SetBoolean(X2, Y2, Bit); + end; + end; + finally + TypeInfoBits.Free; + end; +end; + +// Embed version information if need be. On success, modify the matrix and return true. +// See 8.10 of JISX0510:2004 (p.47) for how to embed version information. +procedure TMatrixUtil.MaybeEmbedVersionInfo(Version: Integer; Matrix: TByteMatrix); +var + VersionInfoBits: TBitArray; + I, J: Integer; + BitIndex: Integer; + Bit: Boolean; +begin + if (Version < 7) then + begin + Exit; // Don't need version info. + end; + + VersionInfoBits := TBitArray.Create; + try + MakeVersionInfoBits(Version, VersionInfoBits); + + BitIndex := 6 * 3 - 1; // It will decrease from 17 to 0. + for I := 0 to 5 do + begin + for J := 0 to 2 do + begin + // Place bits in LSB (least significant bit) to MSB order. + Bit := VersionInfoBits.Get(BitIndex); + Dec(BitIndex); + // Left bottom corner. + Matrix.SetBoolean(I, Matrix.Height - 11 + J, Bit); + // Right bottom corner. + Matrix.SetBoolean(Matrix.Height - 11 + J, I, bit); + end; + end; + finally + VersionInfoBits.Free; + end; +end; + +// Embed "dataBits" using "getMaskPattern". On success, modify the matrix and return true. +// For debugging purposes, it skips masking process if "getMaskPattern" is -1. +// See 8.7 of JISX0510:2004 (p.38) for how to embed data bits. +procedure TMatrixUtil.EmbedDataBits(DataBits: TBitArray; MaskPattern: Integer; Matrix: TByteMatrix); +var + BitIndex: Integer; + Direction: Integer; + X, Y, I, XX: Integer; + Bit: Boolean; + MaskUtil: TMaskUtil; +begin + MaskUtil := TMaskUtil.Create; + try + bitIndex := 0; + direction := -1; + // Start from the right bottom cell. + X := Matrix.Width - 1; + Y := Matrix.Height - 1; + while (X > 0) do + begin + // Skip the vertical timing pattern. + if (X = 6) then + begin + Dec(X, 1); + end; + while ((Y >= 0) and (y < Matrix.Height)) do + begin + for I := 0 to 1 do + begin + XX := X - I; + // Skip the cell if it's not empty. + if (not IsEmpty(Matrix.Get(XX, Y))) then + begin + Continue; + end; + + if (BitIndex < DataBits.GetSize) then + begin + Bit := DataBits.Get(BitIndex); + Inc(BitIndex); + end else + begin + // Padding bit. If there is no bit left, we'll fill the left cells with 0, as described + // in 8.4.9 of JISX0510:2004 (p. 24). + Bit := False; + end; + + // Skip masking if mask_pattern is -1. + if (MaskPattern <> -1) then + begin + if (MaskUtil.GetDataMaskBit(MaskPattern, XX, Y)) then + begin + Bit := not Bit; + end; + end; + Matrix.SetBoolean(XX, Y, Bit); + end; + Inc(Y, Direction); + end; + Direction := -Direction; // Reverse the direction. + Inc(Y, Direction); + Dec(X, 2); // Move to the left. + end; + finally + MaskUtil.Free; + end; + + // All bits should be consumed. + if (BitIndex <> DataBits.GetSize()) then + begin + FMatrixUtilError := True; + Exit; + end; +end; + +// Return the position of the most significant bit set (to one) in the "value". The most +// significant bit is position 32. If there is no bit set, return 0. Examples: +// - findMSBSet(0) => 0 +// - findMSBSet(1) => 1 +// - findMSBSet(255) => 8 +function TMatrixUtil.FindMSBSet(Value: Integer): Integer; +var + NumDigits: Integer; +begin + NumDigits := 0; + while (Value <> 0) do + begin + Value := Value shr 1; + Inc(NumDigits); + end; + Result := NumDigits; +end; + +// Calculate BCH (Bose-Chaudhuri-Hocquenghem) code for "value" using polynomial "poly". The BCH +// code is used for encoding type information and version information. +// Example: Calculation of version information of 7. +// f(x) is created from 7. +// - 7 = 000111 in 6 bits +// - f(x) = x^2 + x^1 + x^0 +// g(x) is given by the standard (p. 67) +// - g(x) = x^12 + x^11 + x^10 + x^9 + x^8 + x^5 + x^2 + 1 +// Multiply f(x) by x^(18 - 6) +// - f'(x) = f(x) * x^(18 - 6) +// - f'(x) = x^14 + x^13 + x^12 +// Calculate the remainder of f'(x) / g(x) +// x^2 +// __________________________________________________ +// g(x) )x^14 + x^13 + x^12 +// x^14 + x^13 + x^12 + x^11 + x^10 + x^7 + x^4 + x^2 +// -------------------------------------------------- +// x^11 + x^10 + x^7 + x^4 + x^2 +// +// The remainder is x^11 + x^10 + x^7 + x^4 + x^2 +// Encode it in binary: 110010010100 +// The return value is 0xc94 (1100 1001 0100) +// +// Since all coefficients in the polynomials are 1 or 0, we can do the calculation by bit +// operations. We don't care if cofficients are positive or negative. +function TMatrixUtil.CalculateBCHCode(Value, Poly: Integer): Integer; +var + MSBSetInPoly: Integer; +begin + // If poly is "1 1111 0010 0101" (version info poly), msbSetInPoly is 13. We'll subtract 1 + // from 13 to make it 12. + MSBSetInPoly := FindMSBSet(Poly); + Value := Value shl (MSBSetInPoly - 1); + // Do the division business using exclusive-or operations. + while (FindMSBSet(Value) >= MSBSetInPoly) do + begin + Value := Value xor (Poly shl (FindMSBSet(Value) - MSBSetInPoly)); + end; + // Now the "value" is the remainder (i.e. the BCH code) + Result := Value; +end; + +// Make bit vector of type information. On success, store the result in "bits" and return true. +// Encode error correction level and mask pattern. See 8.9 of +// JISX0510:2004 (p.45) for details. +procedure TMatrixUtil.MakeTypeInfoBits(ECLevel: TErrorCorrectionLevel; MaskPattern: Integer; Bits: TBitArray); +var + TypeInfo: Integer; + BCHCode: Integer; + MaskBits: TBitArray; +begin + if ((MaskPattern >= 0) and (MaskPattern < NUM_MASK_PATTERNS)) then + begin + TypeInfo := (ECLevel.Bits shl 3) or MaskPattern; + Bits.AppendBits(TypeInfo, 5); + + BCHCode := CalculateBCHCode(TypeInfo, TYPE_INFO_POLY); + Bits.AppendBits(BCHCode, 10); + + MaskBits := TBitArray.Create; + try + MaskBits.AppendBits(TYPE_INFO_MASK_PATTERN, 15); + Bits.XorOperation(MaskBits); + finally + MaskBits.Free; + end; + + if (Bits.GetSize <> 15) then // Just in case. + begin + FMatrixUtilError := True; + Exit; + end; + end; +end; + +// Make bit vector of version information. On success, store the result in "bits" and return true. +// See 8.10 of JISX0510:2004 (p.45) for details. +procedure TMatrixUtil.MakeVersionInfoBits(Version: Integer; Bits: TBitArray); +var + BCHCode: Integer; +begin + Bits.AppendBits(Version, 6); + BCHCode := CalculateBCHCode(Version, VERSION_INFO_POLY); + Bits.AppendBits(BCHCode, 12); + + if (Bits.GetSize() <> 18) then + begin + FMatrixUtilError := True; + Exit; + end; +end; + +// Check if "value" is empty. +function TMatrixUtil.IsEmpty(Value: Integer): Boolean; +begin + Result := (Value = -1); +end; + +procedure TMatrixUtil.EmbedTimingPatterns(Matrix: TByteMatrix); +var + I: Integer; + Bit: Integer; +begin + // -8 is for skipping position detection patterns (size 7), and two horizontal/vertical + // separation patterns (size 1). Thus, 8 = 7 + 1. + for I := 8 to Matrix.Width - 9 do + begin + Bit := (I + 1) mod 2; + // Horizontal line. + if (IsEmpty(Matrix.Get(I, 6))) then + begin + Matrix.SetInteger(I, 6, Bit); + end; + // Vertical line. + if (IsEmpty(Matrix.Get(6, I))) then + begin + Matrix.SetInteger(6, I, Bit); + end; + end; +end; + +// Embed the lonely dark dot at left bottom corner. JISX0510:2004 (p.46) +procedure TMatrixUtil.EmbedDarkDotAtLeftBottomCorner(Matrix: TByteMatrix); +begin + if (Matrix.Get(8, Matrix.Height - 8) = 0) then + begin + FMatrixUtilError := True; + Exit; + end; + Matrix.SetInteger(8, Matrix.Height - 8, 1); +end; + +procedure TMatrixUtil.EmbedHorizontalSeparationPattern(XStart, YStart: Integer; Matrix: TByteMatrix); +var + X: Integer; +begin + // We know the width and height. + for X := 0 to 7 do + begin + if (not IsEmpty(Matrix.Get(XStart + X, YStart))) then + begin + FMatrixUtilError := True; + Exit; + end; + Matrix.SetInteger(XStart + X, YStart, HORIZONTAL_SEPARATION_PATTERN[0][X]); + end; +end; + +procedure TMatrixUtil.EmbedVerticalSeparationPattern(XStart, YStart: Integer; Matrix: TByteMatrix); +var + Y: Integer; +begin + // We know the width and height. + for Y := 0 to 6 do + begin + if (not IsEmpty(Matrix.Get(XStart, YStart + Y))) then + begin + FMatrixUtilError := True; + Exit; + end; + Matrix.SetInteger(XStart, YStart + Y, VERTICAL_SEPARATION_PATTERN[Y][0]); + end; +end; + +// Note that we cannot unify the function with embedPositionDetectionPattern() despite they are +// almost identical, since we cannot write a function that takes 2D arrays in different sizes in +// C/C++. We should live with the fact. +procedure TMatrixUtil.EmbedPositionAdjustmentPattern(XStart, YStart: Integer; Matrix: TByteMatrix); +var + X, Y: Integer; +begin + // We know the width and height. + for Y := 0 to 4 do + begin + for X := 0 to 4 do + begin + if (not IsEmpty(Matrix.Get(XStart + X, YStart + Y))) then + begin + FMatrixUtilError := True; + Exit; + end; + Matrix.SetInteger(XStart + X, YStart + Y, POSITION_ADJUSTMENT_PATTERN[Y][X]); + end; + end; +end; + +procedure TMatrixUtil.EmbedPositionDetectionPattern(XStart, YStart: Integer; Matrix: TByteMatrix); +var + X, Y: Integer; +begin + // We know the width and height. + for Y := 0 to 6 do + begin + for X := 0 to 6 do + begin + if (not IsEmpty(Matrix.Get(XStart + X, YStart + Y))) then + begin + FMatrixUtilError := True; + Exit; + end; + Matrix.SetInteger(XStart + X, YStart + Y, POSITION_DETECTION_PATTERN[Y][X]); + end; + end; +end; + +// Embed position detection patterns and surrounding vertical/horizontal separators. +procedure TMatrixUtil.EmbedPositionDetectionPatternsAndSeparators(Matrix: TByteMatrix); +var + PDPWidth: Integer; + HSPWidth: Integer; + VSPSize: Integer; +begin + // Embed three big squares at corners. + PDPWidth := Length(POSITION_DETECTION_PATTERN[0]); + // Left top corner. + EmbedPositionDetectionPattern(0, 0, Matrix); + // Right top corner. + EmbedPositionDetectionPattern(Matrix.Width - PDPWidth, 0, Matrix); + // Left bottom corner. + EmbedPositionDetectionPattern(0, Matrix.Width- PDPWidth, Matrix); + + // Embed horizontal separation patterns around the squares. + HSPWidth := Length(HORIZONTAL_SEPARATION_PATTERN[0]); + // Left top corner. + EmbedHorizontalSeparationPattern(0, HSPWidth - 1, Matrix); + // Right top corner. + EmbedHorizontalSeparationPattern(Matrix.Width - HSPWidth, + HSPWidth - 1, Matrix); + // Left bottom corner. + EmbedHorizontalSeparationPattern(0, Matrix.Width - HSPWidth, Matrix); + + // Embed vertical separation patterns around the squares. + VSPSize := Length(VERTICAL_SEPARATION_PATTERN); + // Left top corner. + EmbedVerticalSeparationPattern(VSPSize, 0, Matrix); + // Right top corner. + EmbedVerticalSeparationPattern(Matrix.Height - VSPSize - 1, 0, Matrix); + // Left bottom corner. + EmbedVerticalSeparationPattern(VSPSize, Matrix.Height - VSPSize, Matrix); +end; + +// Embed position adjustment patterns if need be. +procedure TMatrixUtil.MaybeEmbedPositionAdjustmentPatterns(Version: Integer; Matrix: TByteMatrix); +var + Index: Integer; + Coordinates: array of Integer; + NumCoordinates: Integer; + X, Y, I, J: Integer; +begin + if (Version >= 2) then + begin + Index := Version - 1; + NumCoordinates := Length(POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE[Index]); + SetLength(Coordinates, NumCoordinates); + Move(POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE[Index][0], Coordinates[0], NumCoordinates * SizeOf(Integer)); + for I := 0 to NumCoordinates - 1 do + begin + for J := 0 to NumCoordinates - 1 do + begin + Y := Coordinates[I]; + X := Coordinates[J]; + if ((X = -1) or (Y = -1)) then + begin + Continue; + end; + // If the cell is unset, we embed the position adjustment pattern here. + if (IsEmpty(Matrix.Get(X, Y))) then + begin + // -2 is necessary since the x/y coordinates point to the center of the pattern, not the + // left top corner. + EmbedPositionAdjustmentPattern(X - 2, Y - 2, Matrix); + end; + end; + end; + end; +end; + + +{ TBitArray } + + +procedure TBitArray.AppendBits(Value, NumBits: Integer); +var + NumBitsLeft: Integer; +begin + if ((NumBits < 0) or (NumBits > 32)) then + begin + + end; + EnsureCapacity(Size + NumBits); + for NumBitsLeft := NumBits downto 1 do + begin + AppendBit(((Value shr (NumBitsLeft - 1)) and $01) = 1); + end; +end; + +constructor TBitArray.Create(Size: Integer); + +begin + Size := Size; + SetLength(Bits, (Size + 31) shr 5); +end; + +constructor TBitArray.Create; +begin + Size := 0; + SetLength(Bits, 1); +end; + +function TBitArray.Get(I: Integer): Boolean; +begin + Result := (Bits[I shr 5] and (1 shl (I and $1F))) <> 0; +end; + +function TBitArray.GetSize: Integer; +begin + Result := Size; +end; + +function TBitArray.GetSizeInBytes: Integer; +begin + Result := (Size + 7) shr 3; +end; + +procedure TBitArray.SetBit(Index: Integer); +begin + Bits[Index shr 5] := Bits[Index shr 5] or (1 shl (Index and $1F)); +end; + +procedure TBitArray.AppendBit(Bit: Boolean); +begin + EnsureCapacity(Size + 1); + if (Bit) then + begin + Bits[Size shr 5] := Bits[Size shr 5] or (1 shl (Size and $1F)); + end; + Inc(Size); +end; + +procedure TBitArray.ToBytes(BitOffset: Integer; Source: TByteArray; Offset, + NumBytes: Integer); +var + I: Integer; + J: Integer; + TheByte: Integer; +begin + for I := 0 to NumBytes - 1 do + begin + TheByte := 0; + for J := 0 to 7 do + begin + if (Get(BitOffset)) then + begin + TheByte := TheByte or (1 shl (7 - J)); + end; + Inc(BitOffset); + end; + Source[Offset + I] := TheByte; + end; +end; + +procedure TBitArray.XorOperation(Other: TBitArray); +var + I: Integer; +begin + if (Length(Bits) = Length(Other.Bits)) then + begin + for I := 0 to Length(Bits) - 1 do + begin + // The last byte could be incomplete (i.e. not have 8 bits in + // it) but there is no problem since 0 XOR 0 == 0. + Bits[I] := Bits[I] xor Other.Bits[I]; + end; + end; +end; + +procedure TBitArray.AppendBitArray(NewBitArray: TBitArray); +var + OtherSize: Integer; + I: Integer; +begin + OtherSize := NewBitArray.GetSize; + EnsureCapacity(Size + OtherSize); + for I := 0 to OtherSize - 1 do + begin + AppendBit(NewBitArray.Get(I)); + end; +end; + +procedure TBitArray.EnsureCapacity(Size: Integer); +begin + if (Size > (Length(Bits) shl 5)) then + begin + SetLength(Bits, Size); + end; +end; + +{ TErrorCorrectionLevel } + +procedure TErrorCorrectionLevel.Assign(Source: TErrorCorrectionLevel); +begin + Self.FBits := Source.FBits; +end; + +function TErrorCorrectionLevel.Ordinal: Integer; +begin + Result := 0; +end; + +{ TVersion } + +class function TVersion.ChooseVersion(NumInputBits: Integer; + ECLevel: TErrorCorrectionLevel): TVersion; +var + VersionNum: Integer; + Version: TVersion; + NumBytes: Integer; + ECBlocks: TECBlocks; + NumECBytes: Integer; + NumDataBytes: Integer; + TotalInputBytes: Integer; +begin + Result := nil; + // In the following comments, we use numbers of Version 7-H. + for VersionNum := 1 to 40 do + begin + Version := TVersion.GetVersionForNumber(VersionNum); + + // numBytes = 196 + NumBytes := Version.GetTotalCodewords; + // getNumECBytes = 130 + ECBlocks := Version.GetECBlocksForLevel(ECLevel); + NumECBytes := ECBlocks.GetTotalECCodewords; + // getNumDataBytes = 196 - 130 = 66 + NumDataBytes := NumBytes - NumECBytes; + TotalInputBytes := (NumInputBits + 7) div 8; + + if (numDataBytes >= totalInputBytes) then + begin + Result := Version; + Exit; + end else + begin + Version.Free; + end; + end; +end; + +constructor TVersion.Create(VersionNumber: Integer; + AlignmentPatternCenters: array of Integer; ECBlocks1, ECBlocks2, ECBlocks3, + ECBlocks4: TECBlocks); +var + Total: Integer; + ECBlock: TECB; + ECBArray: TECBArray; + I: Integer; +begin + Self.VersionNumber := VersionNumber; + SetLength(Self.AlignmentPatternCenters, Length(AlignmentPatternCenters)); + if (Length(AlignmentPatternCenters) > 0) then + begin + Move(AlignmentPatternCenters[0], Self.AlignmentPatternCenters[0], + Length(AlignmentPatternCenters) * SizeOf(Integer)); + end; + SetLength(ECBlocks, 4); + ECBlocks[0] := ECBlocks1; + ECBlocks[1] := ECBlocks2; + ECBlocks[2] := ECBlocks3; + ECBlocks[3] := ECBlocks4; + Total := 0; + ECCodewords := ECBlocks1.GetECCodewordsPerBlock; + ECBArray := ECBlocks1.GetECBlocks; + for I := 0 to Length(ECBArray) - 1 do + begin + ECBlock := ECBArray[I]; + Inc(Total, ECBlock.GetCount * (ECBlock.GetDataCodewords + ECCodewords)); + end; + TotalCodewords := Total; +end; + +destructor TVersion.Destroy; +var + X: Integer; +begin + for X := 0 to Length(ECBlocks) - 1 do + begin + ECBlocks[X].Free; + end; + inherited; +end; + +function TVersion.GetDimensionForVersion: Integer; +begin + Result := 17 + 4 * VersionNumber; +end; + +function TVersion.GetECBlocksForLevel(ECLevel: TErrorCorrectionLevel): TECBlocks; +begin + Result := ECBlocks[ECLevel.Ordinal]; +end; + +function TVersion.GetTotalCodewords: Integer; +begin + Result := TotalCodewords; +end; + +class function TVersion.GetVersionForNumber(VersionNum: Integer): TVersion; +begin + if (VersionNum = 1) then + begin + Result := TVersion.Create(1, [], + TECBlocks.Create(7, TECB.Create(1, 19)), + TECBlocks.Create(10, TECB.Create(1, 16)), + TECBlocks.Create(13, TECB.Create(1, 13)), + TECBlocks.Create(17, TECB.Create(1, 9))); + end else + if (VersionNum = 2) then + begin + Result := TVersion.Create(2, [6, 18], + TECBlocks.Create(10, TECB.Create(1, 34)), + TECBlocks.Create(16, TECB.Create(1, 28)), + TECBlocks.Create(22, TECB.Create(1, 22)), + TECBlocks.Create(28, TECB.Create(1, 16))); + end else + if (VersionNum = 3) then + begin + Result := TVersion.Create(3, [6, 22], + TECBlocks.Create(15, TECB.Create(1, 55)), + TECBlocks.Create(26, TECB.Create(1, 44)), + TECBlocks.Create(18, TECB.Create(2, 17)), + TECBlocks.Create(22, TECB.Create(2, 13))); + end else + if (VersionNum = 4) then + begin + Result := TVersion.Create(4, [6, 26], + TECBlocks.Create(20, TECB.Create(1, 80)), + TECBlocks.Create(18, TECB.Create(2, 32)), + TECBlocks.Create(26, TECB.Create(2, 24)), + TECBlocks.Create(16, TECB.Create(4, 9))); + end else + if (VersionNum = 5) then + begin + Result := TVersion.Create(5, [6, 30], + TECBlocks.Create(26, TECB.Create(1, 108)), + TECBlocks.Create(24, TECB.Create(2, 43)), + TECBlocks.Create(18, TECB.Create(2, 15), + TECB.Create(2, 16)), + TECBlocks.Create(22, TECB.Create(2, 11), + TECB.Create(2, 12))); + end else + if (VersionNum = 6) then + begin + Result := TVersion.Create(6, [6, 34], + TECBlocks.Create(18, TECB.Create(2, 68)), + TECBlocks.Create(16, TECB.Create(4, 27)), + TECBlocks.Create(24, TECB.Create(4, 19)), + TECBlocks.Create(28, TECB.Create(4, 15))); + end else + if (VersionNum = 7) then + begin + Result := TVersion.Create(7, [6, 22, 38], + TECBlocks.Create(20, TECB.Create(2, 78)), + TECBlocks.Create(18, TECB.Create(4, 31)), + TECBlocks.Create(18, TECB.Create(2, 14), + TECB.Create(4, 15)), + TECBlocks.Create(26, TECB.Create(4, 13), + TECB.Create(1, 14))); + end else + if (VersionNum = 8) then + begin + Result := TVersion.Create(8, [6, 24, 42], + TECBlocks.Create(24, TECB.Create(2, 97)), + TECBlocks.Create(22, TECB.Create(2, 38), + TECB.Create(2, 39)), + TECBlocks.Create(22, TECB.Create(4, 18), + TECB.Create(2, 19)), + TECBlocks.Create(26, TECB.Create(4, 14), + TECB.Create(2, 15))); + end else + if (VersionNum = 9) then + begin + Result := TVersion.Create(9, [6, 26, 46], + TECBlocks.Create(30, TECB.Create(2, 116)), + TECBlocks.Create(22, TECB.Create(3, 36), + TECB.Create(2, 37)), + TECBlocks.Create(20, TECB.Create(4, 16), + TECB.Create(4, 17)), + TECBlocks.Create(24, TECB.Create(4, 12), + TECB.Create(4, 13))); + end else + if (VersionNum = 10) then + begin + Result := TVersion.Create(10, [6, 28, 50], + TECBlocks.Create(18, TECB.Create(2, 68), + TECB.Create(2, 69)), + TECBlocks.Create(26, TECB.Create(4, 43), + TECB.Create(1, 44)), + TECBlocks.Create(24, TECB.Create(6, 19), + TECB.Create(2, 20)), + TECBlocks.Create(28, TECB.Create(6, 15), + TECB.Create(2, 16))); + end else + if (VersionNum = 11) then + begin + Result := TVersion.Create(11, [6, 30, 54], + TECBlocks.Create(20, TECB.Create(4, 81)), + TECBlocks.Create(30, TECB.Create(1, 50), + TECB.Create(4, 51)), + TECBlocks.Create(28, TECB.Create(4, 22), + TECB.Create(4, 23)), + TECBlocks.Create(24, TECB.Create(3, 12), + TECB.Create(8, 13))); + end else + if (VersionNum = 12) then + begin + Result := TVersion.Create(12, [6, 32, 58], + TECBlocks.Create(24, TECB.Create(2, 92), + TECB.Create(2, 93)), + TECBlocks.Create(22, TECB.Create(6, 36), + TECB.Create(2, 37)), + TECBlocks.Create(26, TECB.Create(4, 20), + TECB.Create(6, 21)), + TECBlocks.Create(28, TECB.Create(7, 14), + TECB.Create(4, 15))); + end else + if (VersionNum = 13) then + begin + Result := TVersion.Create(13, [6, 34, 62], + TECBlocks.Create(26, TECB.Create(4, 107)), + TECBlocks.Create(22, TECB.Create(8, 37), + TECB.Create(1, 38)), + TECBlocks.Create(24, TECB.Create(8, 20), + TECB.Create(4, 21)), + TECBlocks.Create(22, TECB.Create(12, 11), + TECB.Create(4, 12))); + end else + if (VersionNum = 14) then + begin + Result := TVersion.Create(14, [6, 26, 46, 66], + TECBlocks.Create(30, TECB.Create(3, 115), + TECB.Create(1, 116)), + TECBlocks.Create(24, TECB.Create(4, 40), + TECB.Create(5, 41)), + TECBlocks.Create(20, TECB.Create(11, 16), + TECB.Create(5, 17)), + TECBlocks.Create(24, TECB.Create(11, 12), + TECB.Create(5, 13))); + end else + if (VersionNum = 15) then + begin + Result := TVersion.Create(15, [6, 26, 48, 70], + TECBlocks.Create(22, TECB.Create(5, 87), + TECB.Create(1, 88)), + TECBlocks.Create(24, TECB.Create(5, 41), + TECB.Create(5, 42)), + TECBlocks.Create(30, TECB.Create(5, 24), + TECB.Create(7, 25)), + TECBlocks.Create(24, TECB.Create(11, 12), + TECB.Create(7, 13))); + end else + if (VersionNum = 16) then + begin + Result := TVersion.Create(16, [6, 26, 50, 74], + TECBlocks.Create(24, TECB.Create(5, 98), + TECB.Create(1, 99)), + TECBlocks.Create(28, TECB.Create(7, 45), + TECB.Create(3, 46)), + TECBlocks.Create(24, TECB.Create(15, 19), + TECB.Create(2, 20)), + TECBlocks.Create(30, TECB.Create(3, 15), + TECB.Create(13, 16))); + end else + if (VersionNum = 17) then + begin + Result := TVersion.Create(17, [6, 30, 54, 78], + TECBlocks.Create(28, TECB.Create(1, 107), + TECB.Create(5, 108)), + TECBlocks.Create(28, TECB.Create(10, 46), + TECB.Create(1, 47)), + TECBlocks.Create(28, TECB.Create(1, 22), + TECB.Create(15, 23)), + TECBlocks.Create(28, TECB.Create(2, 14), + TECB.Create(17, 15))); + end else + if (VersionNum = 18) then + begin + Result := TVersion.Create(18, [6, 30, 56, 82], + TECBlocks.Create(30, TECB.Create(5, 120), + TECB.Create(1, 121)), + TECBlocks.Create(26, TECB.Create(9, 43), + TECB.Create(4, 44)), + TECBlocks.Create(28, TECB.Create(17, 22), + TECB.Create(1, 23)), + TECBlocks.Create(28, TECB.Create(2, 14), + TECB.Create(19, 15))); + end else + if (VersionNum = 19) then + begin + Result := TVersion.Create(19, [6, 30, 58, 86], + TECBlocks.Create(28, TECB.Create(3, 113), + TECB.Create(4, 114)), + TECBlocks.Create(26, TECB.Create(3, 44), + TECB.Create(11, 45)), + TECBlocks.Create(26, TECB.Create(17, 21), + TECB.Create(4, 22)), + TECBlocks.Create(26, TECB.Create(9, 13), + TECB.Create(16, 14))); + end else + if (VersionNum = 20) then + begin + Result := TVersion.Create(20, [6, 34, 62, 90], + TECBlocks.Create(28, TECB.Create(3, 107), + TECB.Create(5, 108)), + TECBlocks.Create(26, TECB.Create(3, 41), + TECB.Create(13, 42)), + TECBlocks.Create(30, TECB.Create(15, 24), + TECB.Create(5, 25)), + TECBlocks.Create(28, TECB.Create(15, 15), + TECB.Create(10, 16))); + end else + if (VersionNum = 21) then + begin + Result := TVersion.Create(21, [6, 28, 50, 72, 94], + TECBlocks.Create(28, TECB.Create(4, 116), + TECB.Create(4, 117)), + TECBlocks.Create(26, TECB.Create(17, 42)), + TECBlocks.Create(28, TECB.Create(17, 22), + TECB.Create(6, 23)), + TECBlocks.Create(30, TECB.Create(19, 16), + TECB.Create(6, 17))); + end else + if (VersionNum = 22) then + begin + Result := TVersion.Create(22, [6, 26, 50, 74, 98], + TECBlocks.Create(28, TECB.Create(2, 111), + TECB.Create(7, 112)), + TECBlocks.Create(28, TECB.Create(17, 46)), + TECBlocks.Create(30, TECB.Create(7, 24), + TECB.Create(16, 25)), + TECBlocks.Create(24, TECB.Create(34, 13))); + end else + if (VersionNum = 23) then + begin + Result := TVersion.Create(23, [6, 30, 54, 78, 102], + TECBlocks.Create(30, TECB.Create(4, 121), + TECB.Create(5, 122)), + TECBlocks.Create(28, TECB.Create(4, 47), + TECB.Create(14, 48)), + TECBlocks.Create(30, TECB.Create(11, 24), + TECB.Create(14, 25)), + TECBlocks.Create(30, TECB.Create(16, 15), + TECB.Create(14, 16))); + end else + if (VersionNum = 24) then + begin + Result := TVersion.Create(24, [6, 28, 54, 80, 106], + TECBlocks.Create(30, TECB.Create(6, 117), + TECB.Create(4, 118)), + TECBlocks.Create(28, TECB.Create(6, 45), + TECB.Create(14, 46)), + TECBlocks.Create(30, TECB.Create(11, 24), + TECB.Create(16, 25)), + TECBlocks.Create(30, TECB.Create(30, 16), + TECB.Create(2, 17))); + end else + if (VersionNum = 25) then + begin + Result := TVersion.Create(25, [6, 32, 58, 84, 110], + TECBlocks.Create(26, TECB.Create(8, 106), + TECB.Create(4, 107)), + TECBlocks.Create(28, TECB.Create(8, 47), + TECB.Create(13, 48)), + TECBlocks.Create(30, TECB.Create(7, 24), + TECB.Create(22, 25)), + TECBlocks.Create(30, TECB.Create(22, 15), + TECB.Create(13, 16))); + end else + if (VersionNum = 26) then + begin + Result := TVersion.Create(26, [6, 30, 58, 86, 114], + TECBlocks.Create(28, TECB.Create(10, 114), + TECB.Create(2, 115)), + TECBlocks.Create(28, TECB.Create(19, 46), + TECB.Create(4, 47)), + TECBlocks.Create(28, TECB.Create(28, 22), + TECB.Create(6, 23)), + TECBlocks.Create(30, TECB.Create(33, 16), + TECB.Create(4, 17))); + end else + if (VersionNum = 27) then + begin + Result := TVersion.Create(27, [6, 34, 62, 90, 118], + TECBlocks.Create(30, TECB.Create(8, 122), + TECB.Create(4, 123)), + TECBlocks.Create(28, TECB.Create(22, 45), + TECB.Create(3, 46)), + TECBlocks.Create(30, TECB.Create(8, 23), + TECB.Create(26, 24)), + TECBlocks.Create(30, TECB.Create(12, 15), + TECB.Create(28, 16))); + end else + if (VersionNum = 28) then + begin + Result := TVersion.Create(28, [6, 26, 50, 74, 98, 122], + TECBlocks.Create(30, TECB.Create(3, 117), + TECB.Create(10, 118)), + TECBlocks.Create(28, TECB.Create(3, 45), + TECB.Create(23, 46)), + TECBlocks.Create(30, TECB.Create(4, 24), + TECB.Create(31, 25)), + TECBlocks.Create(30, TECB.Create(11, 15), + TECB.Create(31, 16))); + end else + if (VersionNum = 29) then + begin + Result := TVersion.Create(29, [6, 30, 54, 78, 102, 126], + TECBlocks.Create(30, TECB.Create(7, 116), + TECB.Create(7, 117)), + TECBlocks.Create(28, TECB.Create(21, 45), + TECB.Create(7, 46)), + TECBlocks.Create(30, TECB.Create(1, 23), + TECB.Create(37, 24)), + TECBlocks.Create(30, TECB.Create(19, 15), + TECB.Create(26, 16))); + end else + if (VersionNum = 30) then + begin + Result := TVersion.Create(30, [6, 26, 52, 78, 104, 130], + TECBlocks.Create(30, TECB.Create(5, 115), + TECB.Create(10, 116)), + TECBlocks.Create(28, TECB.Create(19, 47), + TECB.Create(10, 48)), + TECBlocks.Create(30, TECB.Create(15, 24), + TECB.Create(25, 25)), + TECBlocks.Create(30, TECB.Create(23, 15), + TECB.Create(25, 16))); + end else + if (VersionNum = 31) then + begin + Result := TVersion.Create(31, [6, 30, 56, 82, 108, 134], + TECBlocks.Create(30, TECB.Create(13, 115), + TECB.Create(3, 116)), + TECBlocks.Create(28, TECB.Create(2, 46), + TECB.Create(29, 47)), + TECBlocks.Create(30, TECB.Create(42, 24), + TECB.Create(1, 25)), + TECBlocks.Create(30, TECB.Create(23, 15), + TECB.Create(28, 16))); + end else + if (VersionNum = 32) then + begin + Result := TVersion.Create(32, [6, 34, 60, 86, 112, 138], + TECBlocks.Create(30, TECB.Create(17, 115)), + TECBlocks.Create(28, TECB.Create(10, 46), + TECB.Create(23, 47)), + TECBlocks.Create(30, TECB.Create(10, 24), + TECB.Create(35, 25)), + TECBlocks.Create(30, TECB.Create(19, 15), + TECB.Create(35, 16))); + end else + if (VersionNum = 33) then + begin + Result := TVersion.Create(33, [6, 30, 58, 86, 114, 142], + TECBlocks.Create(30, TECB.Create(17, 115), + TECB.Create(1, 116)), + TECBlocks.Create(28, TECB.Create(14, 46), + TECB.Create(21, 47)), + TECBlocks.Create(30, TECB.Create(29, 24), + TECB.Create(19, 25)), + TECBlocks.Create(30, TECB.Create(11, 15), + TECB.Create(46, 16))); + end else + if (VersionNum = 34) then + begin + Result := TVersion.Create(34, [6, 34, 62, 90, 118, 146], + TECBlocks.Create(30, TECB.Create(13, 115), + TECB.Create(6, 116)), + TECBlocks.Create(28, TECB.Create(14, 46), + TECB.Create(23, 47)), + TECBlocks.Create(30, TECB.Create(44, 24), + TECB.Create(7, 25)), + TECBlocks.Create(30, TECB.Create(59, 16), + TECB.Create(1, 17))); + end else + if (VersionNum = 35) then + begin + Result := TVersion.Create(35, [6, 30, 54, 78, 102, 126, 150], + TECBlocks.Create(30, TECB.Create(12, 121), + TECB.Create(7, 122)), + TECBlocks.Create(28, TECB.Create(12, 47), + TECB.Create(26, 48)), + TECBlocks.Create(30, TECB.Create(39, 24), + TECB.Create(14, 25)), + TECBlocks.Create(30, TECB.Create(22, 15), + TECB.Create(41, 16))); + end else + if (VersionNum = 36) then + begin + Result := TVersion.Create(36, [6, 24, 50, 76, 102, 128, 154], + TECBlocks.Create(30, TECB.Create(6, 121), + TECB.Create(14, 122)), + TECBlocks.Create(28, TECB.Create(6, 47), + TECB.Create(34, 48)), + TECBlocks.Create(30, TECB.Create(46, 24), + TECB.Create(10, 25)), + TECBlocks.Create(30, TECB.Create(2, 15), + TECB.Create(64, 16))); + end else + if (VersionNum = 37) then + begin + Result := TVersion.Create(37, [6, 28, 54, 80, 106, 132, 158], + TECBlocks.Create(30, TECB.Create(17, 122), + TECB.Create(4, 123)), + TECBlocks.Create(28, TECB.Create(29, 46), + TECB.Create(14, 47)), + TECBlocks.Create(30, TECB.Create(49, 24), + TECB.Create(10, 25)), + TECBlocks.Create(30, TECB.Create(24, 15), + TECB.Create(46, 16))); + end else + if (VersionNum = 38) then + begin + Result := TVersion.Create(38, [6, 32, 58, 84, 110, 136, 162], + TECBlocks.Create(30, TECB.Create(4, 122), + TECB.Create(18, 123)), + TECBlocks.Create(28, TECB.Create(13, 46), + TECB.Create(32, 47)), + TECBlocks.Create(30, TECB.Create(48, 24), + TECB.Create(14, 25)), + TECBlocks.Create(30, TECB.Create(42, 15), + TECB.Create(32, 16))); + end else + if (VersionNum = 39) then + begin + Result := TVersion.Create(39, [6, 26, 54, 82, 110, 138, 166], + TECBlocks.Create(30, TECB.Create(20, 117), + TECB.Create(4, 118)), + TECBlocks.Create(28, TECB.Create(40, 47), + TECB.Create(7, 48)), + TECBlocks.Create(30, TECB.Create(43, 24), + TECB.Create(22, 25)), + TECBlocks.Create(30, TECB.Create(10, 15), + TECB.Create(67, 16))); + end else + if (VersionNum = 40) then + begin + Result := TVersion.Create(40, [6, 30, 58, 86, 114, 142, 170], + TECBlocks.Create(30, TECB.Create(19, 118), + TECB.Create(6, 119)), + TECBlocks.Create(28, TECB.Create(18, 47), + TECB.Create(31, 48)), + TECBlocks.Create(30, TECB.Create(34, 24), + TECB.Create(34, 25)), + TECBlocks.Create(30, TECB.Create(20, 15), + TECB.Create(61, 16))); + end else + begin + Result := nil; + end; +end; + +{ TMaskUtil } + +// Return the mask bit for "getMaskPattern" at "x" and "y". See 8.8 of JISX0510:2004 for mask +// pattern conditions. +function TMaskUtil.GetDataMaskBit(MaskPattern, X, Y: Integer): Boolean; +var + Intermediate: Integer; + Temp: Integer; +begin + Intermediate := 0; + if ((MaskPattern >= 0) and (MaskPattern < NUM_MASK_PATTERNS)) then + begin + case (maskPattern) of + 0: Intermediate := (Y + X) and 1; + 1: Intermediate := Y and 1; + 2: Intermediate := X mod 3; + 3: Intermediate := (Y + X) mod 3; + 4: Intermediate := ((y shr 1) + (X div 3)) and 1; + 5: + begin + Temp := Y * X; + Intermediate := (Temp and 1) + (Temp mod 3); + end; + 6: + begin + Temp := Y * X; + Intermediate := ((Temp and 1) + (Temp mod 3)) and 1; + end; + 7: + begin + Temp := Y * X; + Intermediate := ((temp mod 3) + ((Y + X) and 1)) and 1; + end; + end; + end; + Result := Intermediate = 0; +end; + +{ TECBlocks } + +constructor TECBlocks.Create(ECCodewordsPerBlock: Integer; ECBlocks: TECB); +begin + Self.ECCodewordsPerBlock := ECCodewordsPerBlock; + SetLength(Self.ECBlocks, 1); + Self.ECBlocks[0] := ECBlocks; +end; + +constructor TECBlocks.Create(ECCodewordsPerBlock: Integer; ECBlocks1, + ECBlocks2: TECB); +begin + Self.ECCodewordsPerBlock := ECCodewordsPerBlock; + SetLength(Self.ECBlocks, 2); + ECBlocks[0] := ECBlocks1; + ECBlocks[1] := ECBlocks2; +end; + +destructor TECBlocks.Destroy; +var + X: Integer; +begin + for X := 0 to Length(ECBlocks) - 1 do + begin + ECBlocks[X].Free; + end; + inherited; +end; + +function TECBlocks.GetECBlocks: TECBArray; +begin + Result := ECBlocks; +end; + +function TECBlocks.GetECCodewordsPerBlock: Integer; +begin + Result := ECCodewordsPerBlock; +end; + +function TECBlocks.GetNumBlocks: Integer; +var + Total: Integer; + I: Integer; +begin + Total := 0; + for I := 0 to Length(ECBlocks) - 1 do + begin + Inc(Total, ECBlocks[I].GetCount); + end; + Result := Total; +end; + +function TECBlocks.GetTotalECCodewords: Integer; +begin + Result := ECCodewordsPerBlock * GetNumBlocks; +end; + +{ TBlockPair } + +constructor TBlockPair.Create(BA1, BA2: TByteArray); +begin + FDataBytes := BA1; + FErrorCorrectionBytes := BA2; +end; + +function TBlockPair.GetDataBytes: TByteArray; +begin + Result := FDataBytes; +end; + +function TBlockPair.GetErrorCorrectionBytes: TByteArray; +begin + Result := FErrorCorrectionBytes; +end; + +{ TReedSolomonEncoder } + +function TReedSolomonEncoder.BuildGenerator(Degree: Integer): TGenericGFPoly; +var + LastGenerator: TGenericGFPoly; + NextGenerator: TGenericGFPoly; + Poly: TGenericGFPoly; + D: Integer; + CA: TIntegerArray; +begin + if (Degree >= FCachedGenerators.Count) then + begin + LastGenerator := TGenericGFPoly(FCachedGenerators[FCachedGenerators.Count - 1]); + + for D := FCachedGenerators.Count to Degree do + begin + SetLength(CA, 2); + CA[0] := 1; + CA[1] := FField.Exp(D - 1 + FField.GetGeneratorBase); + Poly := TGenericGFPoly.Create(FField, CA); + NextGenerator := LastGenerator.Multiply(Poly); + FCachedGenerators.Add(NextGenerator); + LastGenerator := NextGenerator; + end; + end; + Result := TGenericGFPoly(FCachedGenerators[Degree]); +end; + +constructor TReedSolomonEncoder.Create(AField: TGenericGF); +var + GenericGFPoly: TGenericGFPoly; + IntArray: TIntegerArray; +begin + FField := AField; + + // Contents of FCachedGenerators will be freed by FGenericGF.Destroy + FCachedGenerators := TObjectList.Create(False); + + SetLength(IntArray, 1); + IntArray[0] := 1; + GenericGFPoly := TGenericGFPoly.Create(AField, IntArray); + FCachedGenerators.Add(GenericGFPoly); +end; + +destructor TReedSolomonEncoder.Destroy; +begin + FCachedGenerators.Free; + inherited; +end; + +procedure TReedSolomonEncoder.Encode(ToEncode: TIntegerArray; ECBytes: Integer); +var + DataBytes: Integer; + Generator: TGenericGFPoly; + InfoCoefficients: TIntegerArray; + Info: TGenericGFPoly; + Remainder: TGenericGFPoly; + Coefficients: TIntegerArray; + NumZeroCoefficients: Integer; + I: Integer; +begin + SetLength(Coefficients, 0); + if (ECBytes > 0) then + begin + DataBytes := Length(ToEncode) - ECBytes; + if (DataBytes > 0) then + begin + Generator := BuildGenerator(ECBytes); + SetLength(InfoCoefficients, DataBytes); + InfoCoefficients := Copy(ToEncode, 0, DataBytes); + Info := TGenericGFPoly.Create(FField, InfoCoefficients); + Info := Info.MultiplyByMonomial(ECBytes, 1); + Remainder := Info.Divide(Generator)[1]; + Coefficients := Remainder.GetCoefficients; + NumZeroCoefficients := ECBytes - Length(Coefficients); + for I := 0 to NumZeroCoefficients - 1 do + begin + ToEncode[DataBytes + I] := 0; + end; + Move(Coefficients[0], ToEncode[DataBytes + NumZeroCoefficients], Length(Coefficients) * SizeOf(Integer)); + end; + end; +end; + +{ TECB } + +constructor TECB.Create(Count, DataCodewords: Integer); +begin + Self.Count := Count; + Self.DataCodewords := DataCodewords; +end; + +function TECB.GetCount: Integer; +begin + Result := Count; +end; + +function TECB.GetDataCodewords: Integer; +begin + Result := DataCodewords; +end; + +{ TGenericGFPoly } + +function TGenericGFPoly.AddOrSubtract(Other: TGenericGFPoly): TGenericGFPoly; +var + SmallerCoefficients: TIntegerArray; + LargerCoefficients: TIntegerArray; + Temp: TIntegerArray; + SumDiff: TIntegerArray; + LengthDiff: Integer; + I: Integer; +begin + SetLength(SmallerCoefficients, 0); + SetLength(LargerCoefficients, 0); + SetLength(Temp, 0); + SetLength(SumDiff, 0); + + Result := nil; + if (Assigned(Other)) then + begin + if (FField = Other.FField) then + begin + if (IsZero) then + begin + Result := Other; + Exit; + end; + + if (Other.IsZero) then + begin + Result := Self; + Exit; + end; + + SmallerCoefficients := FCoefficients; + LargerCoefficients := Other.Coefficients; + if (Length(SmallerCoefficients) > Length(LargerCoefficients)) then + begin + Temp := smallerCoefficients; + SmallerCoefficients := LargerCoefficients; + LargerCoefficients := temp; + end; + SetLength(SumDiff, Length(LargerCoefficients)); + LengthDiff := Length(LargerCoefficients) - Length(SmallerCoefficients); + + // Copy high-order terms only found in higher-degree polynomial's coefficients + if (LengthDiff > 0) then + begin + //SumDiff := Copy(LargerCoefficients, 0, LengthDiff); + Move(LargerCoefficients[0], SumDiff[0], LengthDiff * SizeOf(Integer)); + end; + + for I := LengthDiff to Length(LargerCoefficients) - 1 do + begin + SumDiff[I] := TGenericGF.AddOrSubtract(SmallerCoefficients[I - LengthDiff], LargerCoefficients[I]); + end; + + Result := TGenericGFPoly.Create(FField, SumDiff); + end; + end; +end; + +function TGenericGFPoly.Coefficients: TIntegerArray; +begin + Result := FCoefficients; +end; + +constructor TGenericGFPoly.Create(AField: TGenericGF; + ACoefficients: TIntegerArray); +var + CoefficientsLength: Integer; + FirstNonZero: Integer; +begin + FField := AField; + SetLength(FField.FPolyList, Length(FField.FPolyList) + 1); + FField.FPolyList[Length(FField.FPolyList) - 1] := Self; + CoefficientsLength := Length(ACoefficients); + if ((CoefficientsLength > 1) and (ACoefficients[0] = 0)) then + begin + // Leading term must be non-zero for anything except the constant polynomial "0" + FirstNonZero := 1; + while ((FirstNonZero < CoefficientsLength) and (ACoefficients[FirstNonZero] = 0)) do + begin + Inc(FirstNonZero); + end; + + if (FirstNonZero = CoefficientsLength) then + begin + FCoefficients := AField.GetZero.Coefficients; + end else + begin + SetLength(FCoefficients, CoefficientsLength - FirstNonZero); + FCoefficients := Copy(ACoefficients, FirstNonZero, Length(FCoefficients)); + end; + end else + begin + FCoefficients := ACoefficients; + end; +end; + +destructor TGenericGFPoly.Destroy; +begin + Self.FField := FField; + inherited; +end; + +function TGenericGFPoly.Divide(Other: TGenericGFPoly): TGenericGFPolyArray; +var + Quotient: TGenericGFPoly; + Remainder: TGenericGFPoly; + DenominatorLeadingTerm: Integer; + InverseDenominatorLeadingTerm: integer; + DegreeDifference: Integer; + Scale: Integer; + Term: TGenericGFPoly; + IterationQuotient: TGenericGFPoly; +begin + SetLength(Result, 0); + if ((FField = Other.FField) and (not Other.IsZero)) then + begin + + Quotient := FField.GetZero; + Remainder := Self; + + DenominatorLeadingTerm := Other.GetCoefficient(Other.GetDegree); + InverseDenominatorLeadingTerm := FField.Inverse(DenominatorLeadingTerm); + + while ((Remainder.GetDegree >= Other.GetDegree) and (not Remainder.IsZero)) do + begin + DegreeDifference := Remainder.GetDegree - Other.GetDegree; + Scale := FField.Multiply(Remainder.GetCoefficient(Remainder.GetDegree), InverseDenominatorLeadingTerm); + Term := Other.MultiplyByMonomial(DegreeDifference, Scale); + IterationQuotient := FField.BuildMonomial(degreeDifference, scale); + Quotient := Quotient.AddOrSubtract(IterationQuotient); + Remainder := Remainder.AddOrSubtract(Term); + end; + + SetLength(Result, 2); + Result[0] := Quotient; + Result[1] := Remainder; + end; +end; + +function TGenericGFPoly.GetCoefficient(Degree: Integer): Integer; +begin + Result := FCoefficients[Length(FCoefficients) - 1 - Degree]; +end; + +function TGenericGFPoly.GetCoefficients: TIntegerArray; +begin + Result := FCoefficients; +end; + +function TGenericGFPoly.GetDegree: Integer; +begin + Result := Length(FCoefficients) - 1; +end; + +function TGenericGFPoly.IsZero: Boolean; +begin + Result := FCoefficients[0] = 0; +end; + +function TGenericGFPoly.Multiply(Other: TGenericGFPoly): TGenericGFPoly; +var + ACoefficients: TIntegerArray; + BCoefficients: TIntegerArray; + Product: TIntegerArray; + ALength: Integer; + BLength: Integer; + I: Integer; + J: Integer; + ACoeff: Integer; +begin + SetLength(ACoefficients, 0); + SetLength(BCoefficients, 0); + Result := nil; + + if (FField = Other.FField) then + begin + if (IsZero or Other.IsZero) then + begin + Result := FField.GetZero; + Exit; + end; + + ACoefficients := FCoefficients; + ALength := Length(ACoefficients); + BCoefficients := Other.Coefficients; + BLength := Length(BCoefficients); + SetLength(Product, aLength + bLength - 1); + for I := 0 to ALength - 1 do + begin + ACoeff := ACoefficients[I]; + for J := 0 to BLength - 1 do + begin + Product[I + J] := TGenericGF.AddOrSubtract(Product[I + J], + FField.Multiply(ACoeff, BCoefficients[J])); + end; + end; + Result := TGenericGFPoly.Create(FField, Product); + end; +end; + +function TGenericGFPoly.MultiplyByMonomial(Degree, + Coefficient: Integer): TGenericGFPoly; +var + I: Integer; + Size: Integer; + Product: TIntegerArray; +begin + Result := nil; + if (Degree >= 0) then + begin + if (Coefficient = 0) then + begin + Result := FField.GetZero; + Exit; + end; + Size := Length(Coefficients); + SetLength(Product, Size + Degree); + for I := 0 to Size - 1 do + begin + Product[I] := FField.Multiply(FCoefficients[I], Coefficient); + end; + Result := TGenericGFPoly.Create(FField, Product); + end; +end; + +{ TGenericGF } + +class function TGenericGF.AddOrSubtract(A, B: Integer): Integer; +begin + Result := A xor B; +end; + +function TGenericGF.BuildMonomial(Degree, Coefficient: Integer): TGenericGFPoly; +var + Coefficients: TIntegerArray; +begin + CheckInit(); + + if (Degree >= 0) then + begin + if (Coefficient = 0) then + begin + Result := FZero; + Exit; + end; + SetLength(Coefficients, Degree + 1); + Coefficients[0] := Coefficient; + Result := TGenericGFPoly.Create(Self, Coefficients); + end else + begin + Result := nil; + end; +end; + +procedure TGenericGF.CheckInit; +begin + if (not FInitialized) then + begin + Initialize; + end; +end; + +constructor TGenericGF.Create(Primitive, Size, B: Integer); +begin + FInitialized := False; + FPrimitive := Primitive; + FSize := Size; + FGeneratorBase := B; + if (FSize < 0) then + begin + Initialize; + end; +end; + +class function TGenericGF.CreateQRCodeField256: TGenericGF; +begin + Result := TGenericGF.Create($011D, 256, 0); +end; + +destructor TGenericGF.Destroy; +var + X: Integer; + Y: Integer; +begin + for X := 0 to Length(FPolyList) - 1 do + begin + if (Assigned(FPolyList[X])) then + begin + for Y := X + 1 to Length(FPolyList) - 1 do + begin + if (FPolyList[Y] = FPolyList[X]) then + begin + FPolyList[Y] := nil; + end; + end; + FPolyList[X].Free; + end; + end; + inherited; +end; + +function TGenericGF.Exp(A: Integer): Integer; +begin + CheckInit; + Result := FExpTable[A]; +end; + +function TGenericGF.GetGeneratorBase: Integer; +begin + Result := FGeneratorBase; +end; + +function TGenericGF.GetZero: TGenericGFPoly; +begin + CheckInit; + Result := FZero; +end; + +procedure TGenericGF.Initialize; +var + X: Integer; + I: Integer; + CA: TIntegerArray; +begin + SetLength(FExpTable, FSize); + SetLength(FLogTable, FSize); + X := 1; + for I := 0 to FSize - 1 do + begin + FExpTable[I] := x; + X := X shl 1; // x = x * 2; we're assuming the generator alpha is 2 + if (X >= FSize) then + begin + X := X xor FPrimitive; + X := X and (FSize - 1); + end; + end; + + for I := 0 to FSize - 2 do + begin + FLogTable[FExpTable[I]] := I; + end; + + // logTable[0] == 0 but this should never be used + + SetLength(CA, 1); + CA[0] := 0; + FZero := TGenericGFPoly.Create(Self, CA); + + SetLength(CA, 1); + CA[0] := 1; + FOne := TGenericGFPoly.Create(Self, CA); + + FInitialized := True; +end; + +function TGenericGF.Inverse(A: Integer): Integer; +begin + CheckInit; + + if (a <> 0) then + begin + Result := FExpTable[FSize - FLogTable[A] - 1]; + end else + begin + Result := 0; + end; +end; + +function TGenericGF.Multiply(A, B: Integer): Integer; +begin + CheckInit; + if ((A <> 0) and (B <> 0)) then + begin + Result := FExpTable[(FLogTable[A] + FLogTable[B]) mod (FSize - 1)]; + end else + begin + Result := 0; + end; +end; + +function GenerateQRCode(const Input: WideString; EncodeOptions: Integer): T2DBooleanArray; +var + Encoder: TEncoder; + Level: TErrorCorrectionLevel; + QRCode: TQRCode; + X: Integer; + Y: Integer; +begin + Level := TErrorCorrectionLevel.Create; + Level.FBits := 1; + Encoder := TEncoder.Create; + QRCode := TQRCode.Create; + try + Encoder.Encode(Input, EncodeOptions, Level, QRCode); + if (Assigned(QRCode.FMatrix)) then + begin + SetLength(Result, QRCode.FMatrix.FHeight); + for Y := 0 to QRCode.FMatrix.FHeight - 1 do + begin + SetLength(Result[Y], QRCode.FMatrix.FWidth); + for X := 0 to QRCode.FMatrix.FWidth - 1 do + begin + Result[Y][X] := QRCode.FMatrix.Get(Y, X) = 1; + end; + end; + end; + finally + QRCode.Free; + Encoder.Free; + Level.Free; + end; +end; + +{ TDelphiZXingQRCode } + +constructor TDelphiZXingQRCode.Create; +begin + FData := ''; + FEncoding := qrAuto; + FQuietZone := 4; + FRows := 0; + FColumns := 0; +end; + +function TDelphiZXingQRCode.GetIsBlack(Row, Column: Integer): Boolean; +begin + Dec(Row, FQuietZone); + Dec(Column, FQuietZone); + if ((Row >= 0) and (Column >= 0) and (Row < (FRows - FQuietZone * 2)) and (Column < (FColumns - FQuietZone * 2))) then + begin + Result := FElements[Column, Row]; + end else + begin + Result := False; + end; +end; + +procedure TDelphiZXingQRCode.SetData(const NewData: WideString); +begin + if (FData <> NewData) then + begin + FData := NewData; + Update; + end; +end; + +procedure TDelphiZXingQRCode.SetEncoding(NewEncoding: TQRCodeEncoding); +begin + if (FEncoding <> NewEncoding) then + begin + FEncoding := NewEncoding; + Update; + end; +end; + +procedure TDelphiZXingQRCode.SetQuietZone(NewQuietZone: Integer); +begin + if ((FQuietZone <> NewQuietZone) and (NewQuietZone >= 0) and (NewQuietZone <= 100)) then + begin + FQuietZone := NewQuietZone; + Update; + end; +end; + +procedure TDelphiZXingQRCode.Update; +begin + FElements := GenerateQRCode(FData, Ord(FEncoding)); + FRows := Length(FElements) + FQuietZone * 2; + FColumns := FRows; +end; + +end. \ No newline at end of file diff --git a/TestApp/DelphiZXingQRCodeTestApp.dpr b/TestApp/DelphiZXingQRCodeTestApp.dpr new file mode 100644 index 0000000..8c121a5 --- /dev/null +++ b/TestApp/DelphiZXingQRCodeTestApp.dpr @@ -0,0 +1,14 @@ +program DelphiZXingQRCodeTestApp; + +uses + Vcl.Forms, + DelphiZXingQRCodeTestAppMainForm in 'DelphiZXingQRCodeTestAppMainForm.pas' {Form1}; + +{$R *.res} + +begin + Application.Initialize; + Application.MainFormOnTaskbar := True; + Application.CreateForm(TForm1, Form1); + Application.Run; +end. diff --git a/TestApp/DelphiZXingQRCodeTestApp.dproj b/TestApp/DelphiZXingQRCodeTestApp.dproj new file mode 100644 index 0000000..f72f248 --- /dev/null +++ b/TestApp/DelphiZXingQRCodeTestApp.dproj @@ -0,0 +1,156 @@ + + + {9B95C818-479B-45EB-917E-C5AC561D7C60} + 13.4 + VCL + DelphiZXingQRCodeTestApp.dpr + True + Debug + Win32 + 1 + Application + + + true + + + true + Base + true + + + true + Base + true + + + true + Base + true + + + true + Cfg_1 + true + true + + + true + Base + true + + + ..\Source\;$(DCC_UnitSearchPath) + CompanyName=;FileDescription=;FileVersion=1.0.0.0;InternalName=;LegalCopyright=;LegalTrademarks=;OriginalFilename=;ProductName=;ProductVersion=1.0.0.0;Comments= + None + 7177 + bindcompfmx;dsnap;fmx;rtl;dbrtl;fmxase;bindcomp;fmxobj;xmlrtl;fmxdae;bindengine;$(DCC_UsePackage) + $(BDS)\bin\delphi_PROJECTICON.ico + System;Xml;Data;Datasnap;Web;Soap;Vcl;Vcl.Imaging;Vcl.Touch;Vcl.Samples;Vcl.Shell;$(DCC_Namespace) + .\$(Platform)\$(Config) + .\$(Platform)\$(Config) + false + false + false + false + false + + + bindcompvcl;vcltouch;VclSmp;vcl;dsnapcon;vclx;vclimg;vclactnband;vcldb;vcldsnap;$(DCC_UsePackage) + + + bindcompvcl;vcltouch;vcldbx;VclSmp;vcl;IndyCore;IndySystem;dsnapcon;DelphiAdobeReaderActiveX;vclx;svnui;svn;vclimg;fmi;IndyProtocols;bdertl;vclactnband;vcldb;vcldsnap;$(DCC_UsePackage) + true + Winapi;System.Win;Data.Win;Datasnap.Win;Web.Win;Soap.Win;Xml.Win;Bde;$(DCC_Namespace) + 1033 + $(BDS)\bin\default_app.manifest + CompanyName=;FileDescription=;FileVersion=1.0.0.0;InternalName=;LegalCopyright=;LegalTrademarks=;OriginalFilename=;ProductName=;ProductVersion=1.0.0.0;Comments= + + + DEBUG;$(DCC_Define) + false + true + true + true + + + true + 1033 + false + + + false + RELEASE;$(DCC_Define) + 0 + false + + + + MainSource + + +
Form1
+ dfm + + + Cfg_2 + Base + + + Base + + + Cfg_1 + Base + + + + Delphi.Personality.12 + + + + + False + False + 1 + 0 + 0 + 0 + False + False + False + False + False + 7177 + 1252 + + + + + 1.0.0.0 + + + + + + 1.0.0.0 + + + + DelphiZXingQRCodeTestApp.dpr + + + CodeSite Express 5.1 + + + + + False + True + + + 12 + + + + diff --git a/TestApp/DelphiZXingQRCodeTestApp.res b/TestApp/DelphiZXingQRCodeTestApp.res new file mode 100644 index 0000000..c287ee9 Binary files /dev/null and b/TestApp/DelphiZXingQRCodeTestApp.res differ diff --git a/TestApp/DelphiZXingQRCodeTestAppMainForm.dfm b/TestApp/DelphiZXingQRCodeTestAppMainForm.dfm new file mode 100644 index 0000000..51c5eb0 --- /dev/null +++ b/TestApp/DelphiZXingQRCodeTestAppMainForm.dfm @@ -0,0 +1,97 @@ +object Form1: TForm1 + Left = 0 + Top = 0 + Caption = 'Delphi port of ZXing QRCode' + ClientHeight = 282 + ClientWidth = 534 + Color = clBtnFace + Constraints.MinHeight = 320 + Constraints.MinWidth = 550 + Font.Charset = DEFAULT_CHARSET + Font.Color = clWindowText + Font.Height = -11 + Font.Name = 'Tahoma' + Font.Style = [] + OldCreateOrder = False + OnCreate = FormCreate + OnDestroy = FormDestroy + DesignSize = ( + 534 + 282) + PixelsPerInch = 96 + TextHeight = 13 + object Label1: TLabel + Left = 8 + Top = 13 + Width = 22 + Height = 13 + Caption = 'Text' + end + object Label2: TLabel + Left = 8 + Top = 69 + Width = 43 + Height = 13 + Caption = 'Encoding' + end + object Label3: TLabel + Left = 184 + Top = 69 + Width = 52 + Height = 13 + Caption = 'Quiet zone' + end + object Label4: TLabel + Left = 296 + Top = 13 + Width = 38 + Height = 13 + Caption = 'Preview' + end + object PaintBox1: TPaintBox + Left = 296 + Top = 32 + Width = 230 + Height = 242 + Anchors = [akLeft, akTop, akRight, akBottom] + OnPaint = PaintBox1Paint + ExplicitWidth = 331 + ExplicitHeight = 260 + end + object edtText: TEdit + Left = 8 + Top = 32 + Width = 265 + Height = 21 + TabOrder = 0 + Text = 'Hello world' + OnChange = edtTextChange + end + object cmbEncoding: TComboBox + Left = 8 + Top = 88 + Width = 145 + Height = 21 + Style = csDropDownList + ItemIndex = 0 + TabOrder = 1 + Text = 'Auto' + OnChange = cmbEncodingChange + Items.Strings = ( + 'Auto' + 'Numeric' + 'Alphanumeric' + 'ISO-8859-1' + 'UTF-8 without BOM' + 'UTF-8 with BOM') + end + object edtQuietZone: TEdit + Left = 184 + Top = 88 + Width = 89 + Height = 21 + TabOrder = 2 + Text = '4' + OnChange = edtQuietZoneChange + end +end diff --git a/TestApp/DelphiZXingQRCodeTestAppMainForm.pas b/TestApp/DelphiZXingQRCodeTestAppMainForm.pas new file mode 100644 index 0000000..898aaa9 --- /dev/null +++ b/TestApp/DelphiZXingQRCodeTestAppMainForm.pas @@ -0,0 +1,117 @@ +unit DelphiZXingQRCodeTestAppMainForm; + +// Demo app for ZXing QRCode port to Delphi, by Debenu Pty Ltd +// www.debenu.com + +interface + +uses + Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, + Vcl.Controls, Vcl.Forms, Vcl.Dialogs, DelphiZXingQRCode, Vcl.ExtCtrls, + Vcl.StdCtrls; + +type + TForm1 = class(TForm) + edtText: TEdit; + Label1: TLabel; + cmbEncoding: TComboBox; + Label2: TLabel; + Label3: TLabel; + edtQuietZone: TEdit; + Label4: TLabel; + PaintBox1: TPaintBox; + procedure FormDestroy(Sender: TObject); + procedure FormCreate(Sender: TObject); + procedure PaintBox1Paint(Sender: TObject); + procedure edtTextChange(Sender: TObject); + procedure cmbEncodingChange(Sender: TObject); + procedure edtQuietZoneChange(Sender: TObject); + private + QRCodeBitmap: TBitmap; + public + procedure Update; + end; + +var + Form1: TForm1; + +implementation + +{$R *.dfm} + +procedure TForm1.cmbEncodingChange(Sender: TObject); +begin + Update; +end; + +procedure TForm1.edtQuietZoneChange(Sender: TObject); +begin + Update; +end; + +procedure TForm1.edtTextChange(Sender: TObject); +begin + Update; +end; + +procedure TForm1.FormCreate(Sender: TObject); +begin + QRCodeBitmap := TBitmap.Create; + Update; +end; + +procedure TForm1.FormDestroy(Sender: TObject); +begin + QRCodeBitmap.Free; +end; + +procedure TForm1.PaintBox1Paint(Sender: TObject); +var + Scale: Double; +begin + PaintBox1.Canvas.Brush.Color := clWhite; + PaintBox1.Canvas.FillRect(Rect(0, 0, PaintBox1.Width, PaintBox1.Height)); + if ((QRCodeBitmap.Width > 0) and (QRCodeBitmap.Height > 0)) then + begin + if (PaintBox1.Width < PaintBox1.Height) then + begin + Scale := PaintBox1.Width / QRCodeBitmap.Width; + end else + begin + Scale := PaintBox1.Height / QRCodeBitmap.Height; + end; + PaintBox1.Canvas.StretchDraw(Rect(0, 0, Trunc(Scale * QRCodeBitmap.Width), Trunc(Scale * QRCodeBitmap.Height)), QRCodeBitmap); + end; +end; + +procedure TForm1.Update; +var + QRCode: TDelphiZXingQRCode; + Row, Column: Integer; +begin + QRCode := TDelphiZXingQRCode.Create; + try + QRCode.Data := edtText.Text; + QRCode.Encoding := TQRCodeEncoding(cmbEncoding.ItemIndex); + QRCode.QuietZone := StrToIntDef(edtQuietZone.Text, 4); + QRCodeBitmap.SetSize(QRCode.Rows, QRCode.Columns); + for Row := 0 to QRCode.Rows - 1 do + begin + for Column := 0 to QRCode.Columns - 1 do + begin + if (QRCode.IsBlack[Row, Column]) then + begin + QRCodeBitmap.Canvas.Pixels[Column, Row] := clBlack; + end else + begin + QRCodeBitmap.Canvas.Pixels[Column, Row] := clWhite; + end; + end; + end; + finally + QRCode.Free; + end; + PaintBox1.Repaint; +end; + +end.