{"version":3,"file":"ng-zorro-antd-qr-code.mjs","sources":["../../components/qr-code/qrcodegen.ts","../../components/qr-code/utils.ts","../../components/qr-code/qrcode-canvas.component.ts","../../components/qr-code/qrcode-data.ts","../../components/qr-code/qrcode-svg.component.ts","../../components/qr-code/qrcode.component.ts","../../components/qr-code/qrcode.module.ts","../../components/qr-code/public-api.ts","../../components/qr-code/ng-zorro-antd-qr-code.ts"],"sourcesContent":["/**\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE\n */\n\n/**\n * QR Code generator library (TypeScript)\n *\n * Copyright (c) Project Nayuki.\n * https://www.nayuki.io/page/qr-code-generator-library\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in all\n * copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n * SOFTWARE.\n */\n\n'use strict';\n\n// eslint-disable-next-line @typescript-eslint/no-namespace\nnamespace qrcodegen {\n type bit = number;\n type byte = number;\n type int = number;\n\n /*---- QR Code symbol class ----*/\n\n /*\n * A QR Code symbol, which is a type of two-dimension barcode.\n * Invented by Denso Wave and described in the ISO/IEC 18004 standard.\n * Instances of this class represent an immutable square grid of dark and light cells.\n * The class provides static factory functions to create a QR Code from text or binary data.\n * The class covers the QR Code Model 2 specification, supporting all versions (sizes)\n * from 1 to 40, all 4 error correction levels, and 4 character encoding modes.\n *\n * Ways to create a QR Code object:\n * - High level: Take the payload data and call QrCode.encodeText() or QrCode.encodeBinary().\n * - Mid level: Custom-make the list of segments and call QrCode.encodeSegments().\n * - Low level: Custom-make the array of data codeword bytes (including\n * segment headers and final padding, excluding error correction codewords),\n * supply the appropriate version number, and call the QrCode() constructor.\n * (Note that all ways require supplying the desired error correction level.)\n */\n export class QrCode {\n /*-- Static factory functions (high level) --*/\n\n // Returns a QR Code representing the given Unicode text string at the given error correction level.\n // As a conservative upper bound, this function is guaranteed to succeed for strings that have 738 or fewer\n // Unicode code points (not UTF-16 code units) if the low error correction level is used. The smallest possible\n // QR Code version is automatically chosen for the output. The ECC level of the result may be higher than the\n // ecl argument if it can be done without increasing the version.\n public static encodeText(text: string, ecl: QrCode.Ecc): QrCode {\n const segs: QrSegment[] = qrcodegen.QrSegment.makeSegments(text);\n return QrCode.encodeSegments(segs, ecl);\n }\n\n // Returns a QR Code representing the given binary data at the given error correction level.\n // This function always encodes using the binary segment mode, not any text mode. The maximum number of\n // bytes allowed is 2953. The smallest possible QR Code version is automatically chosen for the output.\n // The ECC level of the result may be higher than the ecl argument if it can be done without increasing the version.\n public static encodeBinary(data: readonly byte[], ecl: QrCode.Ecc): QrCode {\n const seg: QrSegment = qrcodegen.QrSegment.makeBytes(data);\n return QrCode.encodeSegments([seg], ecl);\n }\n\n /*-- Static factory functions (mid level) --*/\n\n // Returns a QR Code representing the given segments with the given encoding parameters.\n // The smallest possible QR Code version within the given range is automatically\n // chosen for the output. Iff boostEcl is true, then the ECC level of the result\n // may be higher than the ecl argument if it can be done without increasing the\n // version. The mask number is either between 0 to 7 (inclusive) to force that\n // mask, or -1 to automatically choose an appropriate mask (which may be slow).\n // This function allows the user to create a custom sequence of segments that switches\n // between modes (such as alphanumeric and byte) to encode text in less space.\n // This is a mid-level API; the high-level API is encodeText() and encodeBinary().\n public static encodeSegments(\n segs: readonly QrSegment[],\n ecl: QrCode.Ecc,\n minVersion: int = 1,\n maxVersion: int = 40,\n mask: int = -1,\n boostEcl: boolean = true\n ): QrCode {\n if (\n !(QrCode.MIN_VERSION <= minVersion && minVersion <= maxVersion && maxVersion <= QrCode.MAX_VERSION) ||\n mask < -1 ||\n mask > 7\n )\n throw new RangeError('Invalid value');\n\n // Find the minimal version number to use\n let version: int;\n let dataUsedBits: int;\n for (version = minVersion; ; version++) {\n const dataCapacityBits: int = QrCode.getNumDataCodewords(version, ecl) * 8; // Number of data bits available\n const usedBits: number = QrSegment.getTotalBits(segs, version);\n if (usedBits <= dataCapacityBits) {\n dataUsedBits = usedBits;\n break; // This version number is found to be suitable\n }\n if (version >= maxVersion)\n // All versions in the range could not fit the given data\n throw new RangeError('Data too long');\n }\n\n // Increase the error correction level while the data still fits in the current version number\n for (const newEcl of [QrCode.Ecc.MEDIUM, QrCode.Ecc.QUARTILE, QrCode.Ecc.HIGH]) {\n // From low to high\n if (boostEcl && dataUsedBits <= QrCode.getNumDataCodewords(version, newEcl) * 8) ecl = newEcl;\n }\n\n // Concatenate all segments to create the data bit string\n const bb: bit[] = [];\n for (const seg of segs) {\n appendBits(seg.mode.modeBits, 4, bb);\n appendBits(seg.numChars, seg.mode.numCharCountBits(version), bb);\n for (const b of seg.getData()) bb.push(b);\n }\n assert(bb.length == dataUsedBits);\n\n // Add terminator and pad up to a byte if applicable\n const dataCapacityBits: int = QrCode.getNumDataCodewords(version, ecl) * 8;\n assert(bb.length <= dataCapacityBits);\n appendBits(0, Math.min(4, dataCapacityBits - bb.length), bb);\n appendBits(0, (8 - (bb.length % 8)) % 8, bb);\n assert(bb.length % 8 == 0);\n\n // Pad with alternating bytes until data capacity is reached\n for (let padByte = 0xec; bb.length < dataCapacityBits; padByte ^= 0xec ^ 0x11) appendBits(padByte, 8, bb);\n\n // Pack bits into bytes in big endian\n const dataCodewords: byte[] = [];\n while (dataCodewords.length * 8 < bb.length) dataCodewords.push(0);\n bb.forEach((b: bit, i: int) => (dataCodewords[i >>> 3] |= b << (7 - (i & 7))));\n\n // Create the QR Code object\n return new QrCode(version, ecl, dataCodewords, mask);\n }\n\n /*-- Fields --*/\n\n // The width and height of this QR Code, measured in modules, between\n // 21 and 177 (inclusive). This is equal to version * 4 + 17.\n public readonly size: int;\n\n // The index of the mask pattern used in this QR Code, which is between 0 and 7 (inclusive).\n // Even if a QR Code is created with automatic masking requested (mask = -1),\n // the resulting object still has a mask value between 0 and 7.\n public readonly mask: int;\n\n // The modules of this QR Code (false = light, true = dark).\n // Immutable after constructor finishes. Accessed through getModule().\n private readonly modules: boolean[][] = [];\n\n // Indicates function modules that are not subjected to masking. Discarded when constructor finishes.\n private readonly isFunction: boolean[][] = [];\n\n /*-- Constructor (low level) and fields --*/\n\n // Creates a new QR Code with the given version number,\n // error correction level, data codeword bytes, and mask number.\n // This is a low-level API that most users should not use directly.\n // A mid-level API is the encodeSegments() function.\n public constructor(\n // The version number of this QR Code, which is between 1 and 40 (inclusive).\n // This determines the size of this barcode.\n public readonly version: int,\n\n // The error correction level used in this QR Code.\n public readonly errorCorrectionLevel: QrCode.Ecc,\n\n dataCodewords: readonly byte[],\n\n msk: int\n ) {\n // Check scalar arguments\n if (version < QrCode.MIN_VERSION || version > QrCode.MAX_VERSION)\n throw new RangeError('Version value out of range');\n if (msk < -1 || msk > 7) throw new RangeError('Mask value out of range');\n this.size = version * 4 + 17;\n\n // Initialize both grids to be size*size arrays of Boolean false\n const row: boolean[] = [];\n for (let i = 0; i < this.size; i++) row.push(false);\n for (let i = 0; i < this.size; i++) {\n this.modules.push(row.slice()); // Initially all light\n this.isFunction.push(row.slice());\n }\n\n // Compute ECC, draw modules\n this.drawFunctionPatterns();\n const allCodewords: byte[] = this.addEccAndInterleave(dataCodewords);\n this.drawCodewords(allCodewords);\n\n // Do masking\n if (msk == -1) {\n // Automatically choose best mask\n let minPenalty: int = 1000000000;\n for (let i = 0; i < 8; i++) {\n this.applyMask(i);\n this.drawFormatBits(i);\n const penalty: int = this.getPenaltyScore();\n if (penalty < minPenalty) {\n msk = i;\n minPenalty = penalty;\n }\n this.applyMask(i); // Undoes the mask due to XOR\n }\n }\n assert(msk >= 0 && msk <= 7);\n this.mask = msk;\n this.applyMask(msk); // Apply the final choice of mask\n this.drawFormatBits(msk); // Overwrite old format bits\n\n this.isFunction = [];\n }\n\n /*-- Accessor methods --*/\n\n // Returns the color of the module (pixel) at the given coordinates, which is false\n // for light or true for dark. The top left corner has the coordinates (x=0, y=0).\n // If the given coordinates are out of bounds, then false (light) is returned.\n public getModule(x: int, y: int): boolean {\n return x >= 0 && x < this.size && y >= 0 && y < this.size && this.modules[y][x];\n }\n\n // Modified to expose modules for easy access\n // eslint-disable-next-line @typescript-eslint/explicit-function-return-type\n public getModules() {\n return this.modules;\n }\n\n /*-- Private helper methods for constructor: Drawing function modules --*/\n\n // Reads this object's version field, and draws and marks all function modules.\n private drawFunctionPatterns(): void {\n // Draw horizontal and vertical timing patterns\n for (let i = 0; i < this.size; i++) {\n this.setFunctionModule(6, i, i % 2 == 0);\n this.setFunctionModule(i, 6, i % 2 == 0);\n }\n\n // Draw 3 finder patterns (all corners except bottom right; overwrites some timing modules)\n this.drawFinderPattern(3, 3);\n this.drawFinderPattern(this.size - 4, 3);\n this.drawFinderPattern(3, this.size - 4);\n\n // Draw numerous alignment patterns\n const alignPatPos: int[] = this.getAlignmentPatternPositions();\n const numAlign: int = alignPatPos.length;\n for (let i = 0; i < numAlign; i++) {\n for (let j = 0; j < numAlign; j++) {\n // Don't draw on the three finder corners\n if (!((i == 0 && j == 0) || (i == 0 && j == numAlign - 1) || (i == numAlign - 1 && j == 0)))\n this.drawAlignmentPattern(alignPatPos[i], alignPatPos[j]);\n }\n }\n\n // Draw configuration data\n this.drawFormatBits(0); // Dummy mask value; overwritten later in the constructor\n this.drawVersion();\n }\n\n // Draws two copies of the format bits (with its own error correction code)\n // based on the given mask and this object's error correction level field.\n private drawFormatBits(mask: int): void {\n // Calculate error correction code and pack bits\n const data: int = (this.errorCorrectionLevel.formatBits << 3) | mask; // errCorrLvl is uint2, mask is uint3\n let rem: int = data;\n for (let i = 0; i < 10; i++) rem = (rem << 1) ^ ((rem >>> 9) * 0x537);\n const bits = ((data << 10) | rem) ^ 0x5412; // uint15\n assert(bits >>> 15 == 0);\n\n // Draw first copy\n for (let i = 0; i <= 5; i++) this.setFunctionModule(8, i, getBit(bits, i));\n this.setFunctionModule(8, 7, getBit(bits, 6));\n this.setFunctionModule(8, 8, getBit(bits, 7));\n this.setFunctionModule(7, 8, getBit(bits, 8));\n for (let i = 9; i < 15; i++) this.setFunctionModule(14 - i, 8, getBit(bits, i));\n\n // Draw second copy\n for (let i = 0; i < 8; i++) this.setFunctionModule(this.size - 1 - i, 8, getBit(bits, i));\n for (let i = 8; i < 15; i++) this.setFunctionModule(8, this.size - 15 + i, getBit(bits, i));\n this.setFunctionModule(8, this.size - 8, true); // Always dark\n }\n\n // Draws two copies of the version bits (with its own error correction code),\n // based on this object's version field, iff 7 <= version <= 40.\n private drawVersion(): void {\n if (this.version < 7) return;\n\n // Calculate error correction code and pack bits\n let rem: int = this.version; // version is uint6, in the range [7, 40]\n for (let i = 0; i < 12; i++) rem = (rem << 1) ^ ((rem >>> 11) * 0x1f25);\n const bits: int = (this.version << 12) | rem; // uint18\n assert(bits >>> 18 == 0);\n\n // Draw two copies\n for (let i = 0; i < 18; i++) {\n const color: boolean = getBit(bits, i);\n const a: int = this.size - 11 + (i % 3);\n const b: int = Math.floor(i / 3);\n this.setFunctionModule(a, b, color);\n this.setFunctionModule(b, a, color);\n }\n }\n\n // Draws a 9*9 finder pattern including the border separator,\n // with the center module at (x, y). Modules can be out of bounds.\n private drawFinderPattern(x: int, y: int): void {\n for (let dy = -4; dy <= 4; dy++) {\n for (let dx = -4; dx <= 4; dx++) {\n const dist: int = Math.max(Math.abs(dx), Math.abs(dy)); // Chebyshev/infinity norm\n const xx: int = x + dx;\n const yy: int = y + dy;\n if (xx >= 0 && xx < this.size && yy >= 0 && yy < this.size)\n this.setFunctionModule(xx, yy, dist != 2 && dist != 4);\n }\n }\n }\n\n // Draws a 5*5 alignment pattern, with the center module\n // at (x, y). All modules must be in bounds.\n private drawAlignmentPattern(x: int, y: int): void {\n for (let dy = -2; dy <= 2; dy++) {\n for (let dx = -2; dx <= 2; dx++)\n this.setFunctionModule(x + dx, y + dy, Math.max(Math.abs(dx), Math.abs(dy)) != 1);\n }\n }\n\n // Sets the color of a module and marks it as a function module.\n // Only used by the constructor. Coordinates must be in bounds.\n private setFunctionModule(x: int, y: int, isDark: boolean): void {\n this.modules[y][x] = isDark;\n this.isFunction[y][x] = true;\n }\n\n /*-- Private helper methods for constructor: Codewords and masking --*/\n\n // Returns a new byte string representing the given data with the appropriate error correction\n // codewords appended to it, based on this object's version and error correction level.\n private addEccAndInterleave(data: readonly byte[]): byte[] {\n const ver: int = this.version;\n const ecl: QrCode.Ecc = this.errorCorrectionLevel;\n if (data.length != QrCode.getNumDataCodewords(ver, ecl)) throw new RangeError('Invalid argument');\n\n // Calculate parameter numbers\n const numBlocks: int = QrCode.NUM_ERROR_CORRECTION_BLOCKS[ecl.ordinal][ver];\n const blockEccLen: int = QrCode.ECC_CODEWORDS_PER_BLOCK[ecl.ordinal][ver];\n const rawCodewords: int = Math.floor(QrCode.getNumRawDataModules(ver) / 8);\n const numShortBlocks: int = numBlocks - (rawCodewords % numBlocks);\n const shortBlockLen: int = Math.floor(rawCodewords / numBlocks);\n\n // Split data into blocks and append ECC to each block\n const blocks: byte[][] = [];\n const rsDiv: byte[] = QrCode.reedSolomonComputeDivisor(blockEccLen);\n for (let i = 0, k = 0; i < numBlocks; i++) {\n const dat: byte[] = data.slice(k, k + shortBlockLen - blockEccLen + (i < numShortBlocks ? 0 : 1));\n k += dat.length;\n const ecc: byte[] = QrCode.reedSolomonComputeRemainder(dat, rsDiv);\n if (i < numShortBlocks) dat.push(0);\n blocks.push(dat.concat(ecc));\n }\n\n // Interleave (not concatenate) the bytes from every block into a single sequence\n const result: byte[] = [];\n for (let i = 0; i < blocks[0].length; i++) {\n blocks.forEach((block, j) => {\n // Skip the padding byte in short blocks\n if (i != shortBlockLen - blockEccLen || j >= numShortBlocks) result.push(block[i]);\n });\n }\n assert(result.length == rawCodewords);\n return result;\n }\n\n // Draws the given sequence of 8-bit codewords (data and error correction) onto the entire\n // data area of this QR Code. Function modules need to be marked off before this is called.\n private drawCodewords(data: readonly byte[]): void {\n if (data.length != Math.floor(QrCode.getNumRawDataModules(this.version) / 8))\n throw new RangeError('Invalid argument');\n let i: int = 0; // Bit index into the data\n // Do the funny zigzag scan\n for (let right = this.size - 1; right >= 1; right -= 2) {\n // Index of right column in each column pair\n if (right == 6) right = 5;\n for (let vert = 0; vert < this.size; vert++) {\n // Vertical counter\n for (let j = 0; j < 2; j++) {\n const x: int = right - j; // Actual x coordinate\n const upward: boolean = ((right + 1) & 2) == 0;\n const y: int = upward ? this.size - 1 - vert : vert; // Actual y coordinate\n if (!this.isFunction[y][x] && i < data.length * 8) {\n this.modules[y][x] = getBit(data[i >>> 3], 7 - (i & 7));\n i++;\n }\n // If this QR Code has any remainder bits (0 to 7), they were assigned as\n // 0/false/light by the constructor and are left unchanged by this method\n }\n }\n }\n assert(i == data.length * 8);\n }\n\n // XORs the codeword modules in this QR Code with the given mask pattern.\n // The function modules must be marked and the codeword bits must be drawn\n // before masking. Due to the arithmetic of XOR, calling applyMask() with\n // the same mask value a second time will undo the mask. A final well-formed\n // QR Code needs exactly one (not zero, two, etc.) mask applied.\n private applyMask(mask: int): void {\n if (mask < 0 || mask > 7) throw new RangeError('Mask value out of range');\n for (let y = 0; y < this.size; y++) {\n for (let x = 0; x < this.size; x++) {\n let invert: boolean;\n switch (mask) {\n case 0:\n invert = (x + y) % 2 == 0;\n break;\n case 1:\n invert = y % 2 == 0;\n break;\n case 2:\n invert = x % 3 == 0;\n break;\n case 3:\n invert = (x + y) % 3 == 0;\n break;\n case 4:\n invert = (Math.floor(x / 3) + Math.floor(y / 2)) % 2 == 0;\n break;\n case 5:\n invert = ((x * y) % 2) + ((x * y) % 3) == 0;\n break;\n case 6:\n invert = (((x * y) % 2) + ((x * y) % 3)) % 2 == 0;\n break;\n case 7:\n invert = (((x + y) % 2) + ((x * y) % 3)) % 2 == 0;\n break;\n default:\n throw new Error('Unreachable');\n }\n if (!this.isFunction[y][x] && invert) this.modules[y][x] = !this.modules[y][x];\n }\n }\n }\n\n // Calculates and returns the penalty score based on state of this QR Code's current modules.\n // This is used by the automatic mask choice algorithm to find the mask pattern that yields the lowest score.\n private getPenaltyScore(): int {\n let result: int = 0;\n\n // Adjacent modules in row having same color, and finder-like patterns\n for (let y = 0; y < this.size; y++) {\n let runColor = false;\n let runX = 0;\n const runHistory = [0, 0, 0, 0, 0, 0, 0];\n for (let x = 0; x < this.size; x++) {\n if (this.modules[y][x] == runColor) {\n runX++;\n if (runX == 5) result += QrCode.PENALTY_N1;\n else if (runX > 5) result++;\n } else {\n this.finderPenaltyAddHistory(runX, runHistory);\n if (!runColor) result += this.finderPenaltyCountPatterns(runHistory) * QrCode.PENALTY_N3;\n runColor = this.modules[y][x];\n runX = 1;\n }\n }\n result += this.finderPenaltyTerminateAndCount(runColor, runX, runHistory) * QrCode.PENALTY_N3;\n }\n // Adjacent modules in column having same color, and finder-like patterns\n for (let x = 0; x < this.size; x++) {\n let runColor = false;\n let runY = 0;\n const runHistory = [0, 0, 0, 0, 0, 0, 0];\n for (let y = 0; y < this.size; y++) {\n if (this.modules[y][x] == runColor) {\n runY++;\n if (runY == 5) result += QrCode.PENALTY_N1;\n else if (runY > 5) result++;\n } else {\n this.finderPenaltyAddHistory(runY, runHistory);\n if (!runColor) result += this.finderPenaltyCountPatterns(runHistory) * QrCode.PENALTY_N3;\n runColor = this.modules[y][x];\n runY = 1;\n }\n }\n result += this.finderPenaltyTerminateAndCount(runColor, runY, runHistory) * QrCode.PENALTY_N3;\n }\n\n // 2*2 blocks of modules having same color\n for (let y = 0; y < this.size - 1; y++) {\n for (let x = 0; x < this.size - 1; x++) {\n const color: boolean = this.modules[y][x];\n if (color == this.modules[y][x + 1] && color == this.modules[y + 1][x] && color == this.modules[y + 1][x + 1])\n result += QrCode.PENALTY_N2;\n }\n }\n\n // Balance of dark and light modules\n let dark: int = 0;\n for (const row of this.modules) dark = row.reduce((sum, color) => sum + (color ? 1 : 0), dark);\n const total: int = this.size * this.size; // Note that size is odd, so dark/total != 1/2\n // Compute the smallest integer k >= 0 such that (45-5k)% <= dark/total <= (55+5k)%\n const k: int = Math.ceil(Math.abs(dark * 20 - total * 10) / total) - 1;\n assert(k >= 0 && k <= 9);\n result += k * QrCode.PENALTY_N4;\n assert(result >= 0 && result <= 2568888); // Non-tight upper bound based on default values of PENALTY_N1, ..., N4\n return result;\n }\n\n /*-- Private helper functions --*/\n\n // Returns an ascending list of positions of alignment patterns for this version number.\n // Each position is in the range [0,177), and are used on both the x and y axes.\n // This could be implemented as lookup table of 40 variable-length lists of integers.\n private getAlignmentPatternPositions(): int[] {\n if (this.version == 1) return [];\n else {\n const numAlign: int = Math.floor(this.version / 7) + 2;\n const step: int = Math.floor((this.version * 8 + numAlign * 3 + 5) / (numAlign * 4 - 4)) * 2;\n const result: int[] = [6];\n for (let pos = this.size - 7; result.length < numAlign; pos -= step) result.splice(1, 0, pos);\n return result;\n }\n }\n\n // Returns the number of data bits that can be stored in a QR Code of the given version number, after\n // all function modules are excluded. This includes remainder bits, so it might not be a multiple of 8.\n // The result is in the range [208, 29648]. This could be implemented as a 40-entry lookup table.\n private static getNumRawDataModules(ver: int): int {\n if (ver < QrCode.MIN_VERSION || ver > QrCode.MAX_VERSION) throw new RangeError('Version number out of range');\n let result: int = (16 * ver + 128) * ver + 64;\n if (ver >= 2) {\n const numAlign: int = Math.floor(ver / 7) + 2;\n result -= (25 * numAlign - 10) * numAlign - 55;\n if (ver >= 7) result -= 36;\n }\n assert(result >= 208 && result <= 29648);\n return result;\n }\n\n // Returns the number of 8-bit data (i.e. not error correction) codewords contained in any\n // QR Code of the given version number and error correction level, with remainder bits discarded.\n // This stateless pure function could be implemented as a (40*4)-cell lookup table.\n private static getNumDataCodewords(ver: int, ecl: QrCode.Ecc): int {\n return (\n Math.floor(QrCode.getNumRawDataModules(ver) / 8) -\n QrCode.ECC_CODEWORDS_PER_BLOCK[ecl.ordinal][ver] * QrCode.NUM_ERROR_CORRECTION_BLOCKS[ecl.ordinal][ver]\n );\n }\n\n // Returns a Reed-Solomon ECC generator polynomial for the given degree. This could be\n // implemented as a lookup table over all possible parameter values, instead of as an algorithm.\n private static reedSolomonComputeDivisor(degree: int): byte[] {\n if (degree < 1 || degree > 255) throw new RangeError('Degree out of range');\n // Polynomial coefficients are stored from highest to lowest power, excluding the leading term which is always 1.\n // For example the polynomial x^3 + 255x^2 + 8x + 93 is stored as the uint8 array [255, 8, 93].\n const result: byte[] = [];\n for (let i = 0; i < degree - 1; i++) result.push(0);\n result.push(1); // Start off with the monomial x^0\n\n // Compute the product polynomial (x - r^0) * (x - r^1) * (x - r^2) * ... * (x - r^{degree-1}),\n // and drop the highest monomial term which is always 1x^degree.\n // Note that r = 0x02, which is a generator element of this field GF(2^8/0x11D).\n let root = 1;\n for (let i = 0; i < degree; i++) {\n // Multiply the current product by (x - r^i)\n for (let j = 0; j < result.length; j++) {\n result[j] = QrCode.reedSolomonMultiply(result[j], root);\n if (j + 1 < result.length) result[j] ^= result[j + 1];\n }\n root = QrCode.reedSolomonMultiply(root, 0x02);\n }\n return result;\n }\n\n // Returns the Reed-Solomon error correction codeword for the given data and divisor polynomials.\n private static reedSolomonComputeRemainder(data: readonly byte[], divisor: readonly byte[]): byte[] {\n const result: byte[] = divisor.map(_ => 0);\n for (const b of data) {\n // Polynomial division\n const factor: byte = b ^ (result.shift() as byte);\n result.push(0);\n divisor.forEach((coef, i) => (result[i] ^= QrCode.reedSolomonMultiply(coef, factor)));\n }\n return result;\n }\n\n // Returns the product of the two given field elements modulo GF(2^8/0x11D). The arguments and result\n // are unsigned 8-bit integers. This could be implemented as a lookup table of 256*256 entries of uint8.\n private static reedSolomonMultiply(x: byte, y: byte): byte {\n if (x >>> 8 != 0 || y >>> 8 != 0) throw new RangeError('Byte out of range');\n // Russian peasant multiplication\n let z: int = 0;\n for (let i = 7; i >= 0; i--) {\n z = (z << 1) ^ ((z >>> 7) * 0x11d);\n z ^= ((y >>> i) & 1) * x;\n }\n assert(z >>> 8 == 0);\n return z as byte;\n }\n\n // Can only be called immediately after a light run is added, and\n // returns either 0, 1, or 2. A helper function for getPenaltyScore().\n private finderPenaltyCountPatterns(runHistory: readonly int[]): int {\n const n: int = runHistory[1];\n assert(n <= this.size * 3);\n const core: boolean =\n n > 0 && runHistory[2] == n && runHistory[3] == n * 3 && runHistory[4] == n && runHistory[5] == n;\n return (\n (core && runHistory[0] >= n * 4 && runHistory[6] >= n ? 1 : 0) +\n (core && runHistory[6] >= n * 4 && runHistory[0] >= n ? 1 : 0)\n );\n }\n\n // Must be called at the end of a line (row or column) of modules. A helper function for getPenaltyScore().\n private finderPenaltyTerminateAndCount(currentRunColor: boolean, currentRunLength: int, runHistory: int[]): int {\n if (currentRunColor) {\n // Terminate dark run\n this.finderPenaltyAddHistory(currentRunLength, runHistory);\n currentRunLength = 0;\n }\n currentRunLength += this.size; // Add light border to final run\n this.finderPenaltyAddHistory(currentRunLength, runHistory);\n return this.finderPenaltyCountPatterns(runHistory);\n }\n\n // Pushes the given value to the front and drops the last value. A helper function for getPenaltyScore().\n private finderPenaltyAddHistory(currentRunLength: int, runHistory: int[]): void {\n if (runHistory[0] == 0) currentRunLength += this.size; // Add light border to initial run\n runHistory.pop();\n runHistory.unshift(currentRunLength);\n }\n\n /*-- Constants and tables --*/\n\n // The minimum version number supported in the QR Code Model 2 standard.\n public static readonly MIN_VERSION: int = 1;\n // The maximum version number supported in the QR Code Model 2 standard.\n public static readonly MAX_VERSION: int = 40;\n\n // For use in getPenaltyScore(), when evaluating which mask is best.\n private static readonly PENALTY_N1: int = 3;\n private static readonly PENALTY_N2: int = 3;\n private static readonly PENALTY_N3: int = 40;\n private static readonly PENALTY_N4: int = 10;\n\n private static readonly ECC_CODEWORDS_PER_BLOCK: int[][] = [\n // Version: (note that index 0 is for padding, and is set to an illegal value)\n //0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 Error correction level\n [\n -1, 7, 10, 15, 20, 26, 18, 20, 24, 30, 18, 20, 24, 26, 30, 22, 24, 28, 30, 28, 28, 28, 28, 30, 30, 26, 28, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30\n ], // Low\n [\n -1, 10, 16, 26, 18, 24, 16, 18, 22, 22, 26, 30, 22, 22, 24, 24, 28, 28, 26, 26, 26, 26, 28, 28, 28, 28, 28, 28,\n 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28\n ], // Medium\n [\n -1, 13, 22, 18, 26, 18, 24, 18, 22, 20, 24, 28, 26, 24, 20, 30, 24, 28, 28, 26, 30, 28, 30, 30, 30, 30, 28, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30\n ], // Quartile\n [\n -1, 17, 28, 22, 16, 22, 28, 26, 26, 24, 28, 24, 28, 22, 24, 24, 30, 28, 28, 26, 28, 30, 24, 30, 30, 30, 30, 30,\n 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30\n ] // High\n ];\n\n private static readonly NUM_ERROR_CORRECTION_BLOCKS: int[][] = [\n // Version: (note that index 0 is for padding, and is set to an illegal value)\n //0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 Error correction level\n [\n -1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 4, 4, 4, 4, 4, 6, 6, 6, 6, 7, 8, 8, 9, 9, 10, 12, 12, 12, 13, 14, 15, 16, 17, 18,\n 19, 19, 20, 21, 22, 24, 25\n ], // Low\n [\n -1, 1, 1, 1, 2, 2, 4, 4, 4, 5, 5, 5, 8, 9, 9, 10, 10, 11, 13, 14, 16, 17, 17, 18, 20, 21, 23, 25, 26, 28, 29,\n 31, 33, 35, 37, 38, 40, 43, 45, 47, 49\n ], // Medium\n [\n -1, 1, 1, 2, 2, 4, 4, 6, 6, 8, 8, 8, 10, 12, 16, 12, 17, 16, 18, 21, 20, 23, 23, 25, 27, 29, 34, 34, 35, 38, 40,\n 43, 45, 48, 51, 53, 56, 59, 62, 65, 68\n ], // Quartile\n [\n -1, 1, 1, 2, 4, 4, 4, 5, 6, 8, 8, 11, 11, 16, 16, 18, 16, 19, 21, 25, 25, 25, 34, 30, 32, 35, 37, 40, 42, 45,\n 48, 51, 54, 57, 60, 63, 66, 70, 74, 77, 81\n ] // High\n ];\n }\n\n // Appends the given number of low-order bits of the given value\n // to the given buffer. Requires 0 <= len <= 31 and 0 <= val < 2^len.\n function appendBits(val: int, len: int, bb: bit[]): void {\n if (len < 0 || len > 31 || val >>> len != 0) throw new RangeError('Value out of range');\n for (\n let i = len - 1;\n i >= 0;\n i-- // Append bit by bit\n )\n bb.push((val >>> i) & 1);\n }\n\n // Returns true iff the i'th bit of x is set to 1.\n function getBit(x: int, i: int): boolean {\n return ((x >>> i) & 1) != 0;\n }\n\n // Throws an exception if the given condition is false.\n function assert(cond: boolean): void {\n if (!cond) throw new Error('Assertion error');\n }\n\n /*---- Data segment class ----*/\n\n /*\n * A segment of character/binary/control data in a QR Code symbol.\n * Instances of this class are immutable.\n * The mid-level way to create a segment is to take the payload data\n * and call a static factory function such as QrSegment.makeNumeric().\n * The low-level way to create a segment is to custom-make the bit buffer\n * and call the QrSegment() constructor with appropriate values.\n * This segment class imposes no length restrictions, but QR Codes have restrictions.\n * Even in the most favorable conditions, a QR Code can only hold 7089 characters of data.\n * Any segment longer than this is meaningless for the purpose of generating QR Codes.\n */\n export class QrSegment {\n /*-- Static factory functions (mid level) --*/\n\n // Returns a segment representing the given binary data encoded in\n // byte mode. All input byte arrays are acceptable. Any text string\n // can be converted to UTF-8 bytes and encoded as a byte mode segment.\n public static makeBytes(data: readonly byte[]): QrSegment {\n const bb: bit[] = [];\n for (const b of data) appendBits(b, 8, bb);\n return new QrSegment(QrSegment.Mode.BYTE, data.length, bb);\n }\n\n // Returns a segment representing the given string of decimal digits encoded in numeric mode.\n public static makeNumeric(digits: string): QrSegment {\n if (!QrSegment.isNumeric(digits)) throw new RangeError('String contains non-numeric characters');\n const bb: bit[] = [];\n for (let i = 0; i < digits.length; ) {\n // Consume up to 3 digits per iteration\n const n: int = Math.min(digits.length - i, 3);\n appendBits(parseInt(digits.substring(i, i + n), 10), n * 3 + 1, bb);\n i += n;\n }\n return new QrSegment(QrSegment.Mode.NUMERIC, digits.length, bb);\n }\n\n // Returns a segment representing the given text string encoded in alphanumeric mode.\n // The characters allowed are: 0 to 9, A to Z (uppercase only), space,\n // dollar, percent, asterisk, plus, hyphen, period, slash, colon.\n public static makeAlphanumeric(text: string): QrSegment {\n if (!QrSegment.isAlphanumeric(text))\n throw new RangeError('String contains unencodable characters in alphanumeric mode');\n const bb: bit[] = [];\n let i: int;\n for (i = 0; i + 2 <= text.length; i += 2) {\n // Process groups of 2\n let temp: int = QrSegment.ALPHANUMERIC_CHARSET.indexOf(text.charAt(i)) * 45;\n temp += QrSegment.ALPHANUMERIC_CHARSET.indexOf(text.charAt(i + 1));\n appendBits(temp, 11, bb);\n }\n if (i < text.length)\n // 1 character remaining\n appendBits(QrSegment.ALPHANUMERIC_CHARSET.indexOf(text.charAt(i)), 6, bb);\n return new QrSegment(QrSegment.Mode.ALPHANUMERIC, text.length, bb);\n }\n\n // Returns a new mutable list of zero or more segments to represent the given Unicode text string.\n // The result may use various segment modes and switch modes to optimize the length of the bit stream.\n public static makeSegments(text: string): QrSegment[] {\n // Select the most efficient segment encoding automatically\n if (text == '') return [];\n else if (QrSegment.isNumeric(text)) return [QrSegment.makeNumeric(text)];\n else if (QrSegment.isAlphanumeric(text)) return [QrSegment.makeAlphanumeric(text)];\n else return [QrSegment.makeBytes(QrSegment.toUtf8ByteArray(text))];\n }\n\n // Returns a segment representing an Extended Channel Interpretation\n // (ECI) designator with the given assignment value.\n public static makeEci(assignVal: int): QrSegment {\n const bb: bit[] = [];\n if (assignVal < 0) throw new RangeError('ECI assignment value out of range');\n else if (assignVal < 1 << 7) appendBits(assignVal, 8, bb);\n else if (assignVal < 1 << 14) {\n appendBits(0b10, 2, bb);\n appendBits(assignVal, 14, bb);\n } else if (assignVal < 1000000) {\n appendBits(0b110, 3, bb);\n appendBits(assignVal, 21, bb);\n } else throw new RangeError('ECI assignment value out of range');\n return new QrSegment(QrSegment.Mode.ECI, 0, bb);\n }\n\n // Tests whether the given string can be encoded as a segment in numeric mode.\n // A string is encodable iff each character is in the range 0 to 9.\n public static isNumeric(text: string): boolean {\n return QrSegment.NUMERIC_REGEX.test(text);\n }\n\n // Tests whether the given string can be encoded as a segment in alphanumeric mode.\n // A string is encodable iff each character is in the following set: 0 to 9, A to Z\n // (uppercase only), space, dollar, percent, asterisk, plus, hyphen, period, slash, colon.\n public static isAlphanumeric(text: string): boolean {\n return QrSegment.ALPHANUMERIC_REGEX.test(text);\n }\n\n /*-- Constructor (low level) and fields --*/\n\n // Creates a new QR Code segment with the given attributes and data.\n // The character count (numChars) must agree with the mode and the bit buffer length,\n // but the constraint isn't checked. The given bit buffer is cloned and stored.\n public constructor(\n // The mode indicator of this segment.\n public readonly mode: QrSegment.Mode,\n\n // The length of this segment's unencoded data. Measured in characters for\n // numeric/alphanumeric/kanji mode, bytes for byte mode, and 0 for ECI mode.\n // Always zero or positive. Not the same as the data's bit length.\n public readonly numChars: int,\n\n // The data bits of this segment. Accessed through getData().\n private readonly bitData: bit[]\n ) {\n if (numChars < 0) throw new RangeError('Invalid argument');\n this.bitData = bitData.slice(); // Make defensive copy\n }\n\n /*-- Methods --*/\n\n // Returns a new copy of the data bits of this segment.\n public getData(): bit[] {\n return this.bitData.slice(); // Make defensive copy\n }\n\n // (Package-private) Calculates and returns the number of bits needed to encode the given segments at\n // the given version. The result is infinity if a segment has too many characters to fit its length field.\n public static getTotalBits(segs: readonly QrSegment[], version: int): number {\n let result = 0;\n for (const seg of segs) {\n const ccbits: int = seg.mode.numCharCountBits(version);\n if (seg.numChars >= 1 << ccbits) return Infinity; // The segment's length doesn't fit the field's bit width\n result += 4 + ccbits + seg.bitData.length;\n }\n return result;\n }\n\n // Returns a new array of bytes representing the given string encoded in UTF-8.\n private static toUtf8ByteArray(str: string): byte[] {\n str = encodeURI(str);\n const result: byte[] = [];\n for (let i = 0; i < str.length; i++) {\n if (str.charAt(i) != '%') result.push(str.charCodeAt(i));\n else {\n result.push(parseInt(str.substring(i + 1, i + 3), 16));\n i += 2;\n }\n }\n return result;\n }\n\n /*-- Constants --*/\n\n // Describes precisely all strings that are encodable in numeric mode.\n private static readonly NUMERIC_REGEX: RegExp = /^[0-9]*$/;\n\n // Describes precisely all strings that are encodable in alphanumeric mode.\n private static readonly ALPHANUMERIC_REGEX: RegExp = /^[A-Z0-9 $%*+./:-]*$/;\n\n // The set of all legal characters in alphanumeric mode,\n // where each character value maps to the index in the string.\n private static readonly ALPHANUMERIC_CHARSET: string = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:';\n }\n}\n\n/*---- Public helper enumeration ----*/\n// eslint-disable-next-line @typescript-eslint/no-namespace\nnamespace qrcodegen {\n // eslint-disable-next-line @typescript-eslint/no-namespace\n export namespace QrCode {\n type int = number;\n\n /*\n * The error correction level in a QR Code symbol. Immutable.\n */\n export class Ecc {\n /*-- Constants --*/\n\n public static readonly LOW = new Ecc(0, 1); // The QR Code can tolerate about 7% erroneous codewords\n public static readonly MEDIUM = new Ecc(1, 0); // The QR Code can tolerate about 15% erroneous codewords\n public static readonly QUARTILE = new Ecc(2, 3); // The QR Code can tolerate about 25% erroneous codewords\n public static readonly HIGH = new Ecc(3, 2); // The QR Code can tolerate about 30% erroneous codewords\n\n /*-- Constructor and fields --*/\n\n private constructor(\n // In the range 0 to 3 (unsigned 2-bit integer).\n public readonly ordinal: int,\n // (Package-private) In the range 0 to 3 (unsigned 2-bit integer).\n public readonly formatBits: int\n ) {}\n }\n }\n}\n\n/*---- Public helper enumeration ----*/\n// eslint-disable-next-line @typescript-eslint/no-namespace\nnamespace qrcodegen {\n // eslint-disable-next-line @typescript-eslint/no-namespace\n export namespace QrSegment {\n type int = number;\n\n /*\n * Describes how a segment's data bits are interpreted. Immutable.\n */\n export class Mode {\n /*-- Constants --*/\n\n public static readonly NUMERIC = new Mode(0x1, [10, 12, 14]);\n public static readonly ALPHANUMERIC = new Mode(0x2, [9, 11, 13]);\n public static readonly BYTE = new Mode(0x4, [8, 16, 16]);\n public static readonly KANJI = new Mode(0x8, [8, 10, 12]);\n public static readonly ECI = new Mode(0x7, [0, 0, 0]);\n\n /*-- Constructor and fields --*/\n\n private constructor(\n // The mode indicator bits, which is a uint4 value (range 0 to 15).\n public readonly modeBits: int,\n // Number of character count bits for three different version ranges.\n private readonly numBitsCharCount: [int, int, int]\n ) {}\n\n /*-- Method --*/\n\n // (Package-private) Returns the bit width of the character count field for a segment in\n // this mode in a QR Code at the given version number. The result is in the range [0, 16].\n public numCharCountBits(ver: int): int {\n return this.numBitsCharCount[Math.floor((ver + 7) / 17)];\n }\n }\n }\n}\n\n// Modification to export for actual use\nexport default qrcodegen;\n","/**\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE\n */\n\n// ==========================================================\nimport qrcodegen from './qrcodegen';\nimport type {\n CrossOrigin,\n ERROR_LEVEL_MAPPED_TYPE,\n ErrorCorrectionLevel,\n Excavation,\n ImageSettings,\n Modules\n} from './typing';\n\nimport Ecc = qrcodegen.QrCode.Ecc;\n\n// =================== ERROR_LEVEL ==========================\nexport const ERROR_LEVEL_MAP: ERROR_LEVEL_MAPPED_TYPE = {\n L: Ecc.LOW,\n M: Ecc.MEDIUM,\n Q: Ecc.QUARTILE,\n H: Ecc.HIGH\n} as const;\n\n// =================== DEFAULT_VALUE ==========================\nexport const DEFAULT_LEVEL: ErrorCorrectionLevel = 'M';\nexport const DEFAULT_BACKGROUND_COLOR = '#FFFFFF';\nexport const DEFAULT_FRONT_COLOR = '#000000';\nexport const DEFAULT_MINVERSION = 1;\nexport const DEFAULT_IMG_SCALE = 0.1;\n\n// =================== UTILS ==========================\n/**\n * Generate a path string from modules\n * @param modules\n * @param margin\n * @returns\n */\nexport const generatePath = (modules: Modules, margin: number = 0): string => {\n const ops: string[] = [];\n modules.forEach((row, y) => {\n let start: number | null = null;\n row.forEach((cell, x) => {\n if (!cell && start !== null) {\n ops.push(`M${start + margin} ${y + margin}h${x - start}v1H${start + margin}z`);\n start = null;\n return;\n }\n\n if (x === row.length - 1) {\n if (!cell) {\n return;\n }\n if (start === null) {\n ops.push(`M${x + margin},${y + margin} h1v1H${x + margin}z`);\n } else {\n ops.push(`M${start + margin},${y + margin} h${x + 1 - start}v1H${start + margin}z`);\n }\n return;\n }\n\n if (cell && start === null) {\n start = x;\n }\n });\n });\n return ops.join('');\n};\n\n/**\n * Excavate modules\n * @param modules\n * @param excavation\n * @returns\n */\nexport const excavateModules = (modules: Modules, excavation: Excavation): Modules => {\n return modules.slice().map((row, y) => {\n if (y < excavation.y || y >= excavation.y + excavation.h) {\n return row;\n }\n return row.map((cell, x) => {\n if (x < excavation.x || x >= excavation.x + excavation.w) {\n return cell;\n }\n return false;\n });\n });\n};\n\n/**\n * Get image settings\n * @param cells The modules of the QR code\n * @param size The size of the QR code\n * @param margin\n * @param imageSettings\n * @returns\n */\nexport const getImageSettings = (\n cells: Modules,\n size: number,\n margin: number,\n imageSettings?: ImageSettings\n): null | {\n x: number;\n y: number;\n h: number;\n w: number;\n excavation: Excavation | null;\n opacity: number;\n crossOrigin: CrossOrigin;\n} => {\n if (imageSettings == null) {\n return null;\n }\n const numCells = cells.length + margin * 2;\n const defaultSize = Math.floor(size * DEFAULT_IMG_SCALE);\n const scale = numCells / size;\n const w = (imageSettings.width || defaultSize) * scale;\n const h = (imageSettings.height || defaultSize) * scale;\n const x = imageSettings.x == null ? cells.length / 2 - w / 2 : imageSettings.x * scale;\n const y = imageSettings.y == null ? cells.length / 2 - h / 2 : imageSettings.y * scale;\n const opacity = imageSettings.opacity == null ? 1 : imageSettings.opacity;\n\n let excavation = null;\n if (imageSettings.excavate) {\n const floorX = Math.floor(x);\n const floorY = Math.floor(y);\n const ceilW = Math.ceil(w + x - floorX);\n const ceilH = Math.ceil(h + y - floorY);\n excavation = { x: floorX, y: floorY, w: ceilW, h: ceilH };\n }\n\n const crossOrigin = imageSettings.crossOrigin;\n\n return { x, y, h, w, excavation, opacity, crossOrigin };\n};\n\n/**\n * Get margin size\n * @param needMargin Whether need margin\n * @param marginSize Custom margin size\n * @returns\n */\nexport const getMarginSize = (marginSize: number): number => Math.max(Math.floor(marginSize), 0);\n\n/**\n * Check if Path2D is supported\n */\nexport const isSupportPath2d = (() => {\n try {\n new Path2D().addPath(new Path2D());\n } catch {\n return false;\n }\n return true;\n})();\n","/**\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE\n */\n\nimport { AfterViewInit, ChangeDetectionStrategy, Component, effect, ElementRef, input, viewChild } from '@angular/core';\n\nimport { CrossOrigin, Excavation, Modules } from './typing';\nimport { DEFAULT_BACKGROUND_COLOR, DEFAULT_FRONT_COLOR, excavateModules, generatePath, isSupportPath2d } from './utils';\n\n@Component({\n changeDetection: ChangeDetectionStrategy.OnPush,\n selector: 'nz-qrcode-canvas',\n exportAs: 'nzQRCodeCanvas',\n template: `\n \n @if (icon()) {\n \n }\n `,\n styles: `\n :host {\n display: block;\n line-height: 0;\n }\n `\n})\nexport class NzQrcodeCanvasComponent implements AfterViewInit {\n canvas = viewChild.required>('canvas');\n image = viewChild>('image');\n readonly icon = input('');\n readonly margin = input(0);\n readonly cells = input([]);\n readonly numCells = input(0);\n readonly calculatedImageSettings = input<{\n x: number;\n y: number;\n h: number;\n w: number;\n excavation: Excavation | null;\n opacity: number;\n crossOrigin: CrossOrigin;\n } | null>(null);\n readonly size = input(160);\n readonly color = input(DEFAULT_FRONT_COLOR);\n readonly bgColor = input(DEFAULT_BACKGROUND_COLOR);\n\n constructor() {\n effect(() => {\n this.icon();\n this.margin();\n this.cells();\n this.numCells();\n this.calculatedImageSettings();\n this.size();\n this.color();\n this.bgColor();\n if (!this.canvas()?.nativeElement) {\n return;\n }\n\n this.render();\n });\n }\n\n ngAfterViewInit(): void {\n this.render();\n }\n\n private render(): void {\n const canvas = this.canvas();\n if (!canvas) {\n return;\n }\n\n const ctx = canvas.nativeElement.getContext('2d') as CanvasRenderingContext2D;\n if (!ctx) {\n return;\n }\n\n this.setupCanvas(ctx);\n this.drawQRCode(ctx);\n this.handleImageLoading(ctx);\n }\n\n private setupCanvas(ctx: CanvasRenderingContext2D): void {\n const canvas = this.canvas();\n if (!canvas) {\n return;\n }\n\n const pixelRatio = window.devicePixelRatio || 1;\n canvas.nativeElement.height = canvas.nativeElement.width = this.size() * pixelRatio;\n canvas.nativeElement.style.width = canvas.nativeElement.style.height = `${this.size()}px`;\n\n const scale = (this.size() / this.numCells()) * pixelRatio;\n ctx.scale(scale, scale);\n\n ctx.fillStyle = this.bgColor();\n ctx.fillRect(0, 0, this.numCells(), this.numCells());\n ctx.fillStyle = this.color();\n }\n\n private drawQRCode(ctx: CanvasRenderingContext2D): void {\n const cellsToDraw = this.getCellsToDraw();\n const haveImageToRender = this.haveImageToRender();\n\n if (!haveImageToRender) {\n this.renderQRCode(ctx, cellsToDraw);\n }\n }\n\n private getCellsToDraw(): Modules {\n let cellsToDraw = this.cells();\n const imageSettings = this.calculatedImageSettings();\n if (this.haveImageToRender() && imageSettings && imageSettings.excavation) {\n cellsToDraw = excavateModules(this.cells(), imageSettings.excavation);\n }\n return cellsToDraw;\n }\n\n private haveImageToRender(): boolean {\n return this.calculatedImageSettings() != null && !!this.image();\n }\n\n private renderQRCode(ctx: CanvasRenderingContext2D, cells: Modules): void {\n if (isSupportPath2d) {\n ctx.fill(new Path2D(generatePath(cells, this.margin())));\n } else {\n cells.forEach((row, rdx) => {\n row.forEach((cell, cdx) => {\n if (cell) {\n ctx.fillRect(cdx + this.margin(), rdx + this.margin(), 1, 1);\n }\n });\n });\n }\n }\n\n private handleImageLoading(ctx: CanvasRenderingContext2D): void {\n if (!this.haveImageToRender()) {\n return;\n }\n\n const image = this.image();\n if (!image) {\n return;\n }\n\n const onLoad = (): void => {\n this.cleanupImageListeners(onLoad, onError);\n this.onImageLoadSuccess(ctx);\n };\n\n const onError = (): void => {\n this.cleanupImageListeners(onLoad, onError);\n this.onImageLoadError(ctx);\n };\n\n image.nativeElement.addEventListener('load', onLoad);\n image.nativeElement.addEventListener('error', onError);\n }\n\n private onImageLoadSuccess(ctx: CanvasRenderingContext2D): void {\n const cellsToDraw = this.getCellsToDraw();\n this.renderQRCode(ctx, cellsToDraw);\n\n const imageSettings = this.calculatedImageSettings();\n const image = this.image();\n if (imageSettings && image) {\n ctx.globalAlpha = imageSettings.opacity;\n ctx.drawImage(\n image.nativeElement,\n imageSettings.x + this.margin(),\n imageSettings.y + this.margin(),\n imageSettings.w,\n imageSettings.h\n );\n }\n }\n\n private onImageLoadError(ctx: CanvasRenderingContext2D): void {\n const cellsToDraw = this.getCellsToDraw();\n this.renderQRCode(ctx, cellsToDraw);\n }\n\n private cleanupImageListeners(onLoad: () => void, onError: () => void): void {\n const image = this.image();\n if (image?.nativeElement) {\n image.nativeElement.removeEventListener('load', onLoad);\n image.nativeElement.removeEventListener('error', onError);\n }\n }\n}\n","/**\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE\n */\n\nimport qrcodegen from './qrcodegen';\nimport { CrossOrigin, Excavation, ImageSettings, Modules } from './typing';\nimport { DEFAULT_LEVEL, ERROR_LEVEL_MAP, getImageSettings, getMarginSize } from './utils';\n\nimport QrSegment = qrcodegen.QrSegment;\nimport QrCode = qrcodegen.QrCode;\n\nexport const createQRCodeData = (\n value: string | string[],\n level = DEFAULT_LEVEL,\n minVersion: number,\n size: number,\n boostLevel: boolean,\n marginSize: number,\n imageSettings?: ImageSettings\n): {\n cells: Modules;\n margin: number;\n numCells: number;\n calculatedImageSettings: null | {\n x: number;\n y: number;\n h: number;\n w: number;\n excavation: Excavation | null;\n opacity: number;\n crossOrigin: CrossOrigin;\n };\n qrcode: QrCode;\n} => {\n const cs = memoizedQrcode(value, level, minVersion, boostLevel);\n const mg = getMarginSize(marginSize);\n const ncs = cs.getModules().length + mg * 2;\n const cis = getImageSettings(cs.getModules(), size, mg, imageSettings);\n\n return {\n cells: cs.getModules(),\n margin: mg,\n numCells: ncs,\n calculatedImageSettings: cis,\n qrcode: cs\n };\n};\n\nexport const memoizedQrcode = (\n value: string | string[],\n level = DEFAULT_LEVEL,\n minVersion: number,\n boostLevel: boolean\n): QrCode => {\n const values = Array.isArray(value) ? value : [value];\n const segments = values.reduce((acc, val) => {\n acc.push(...QrSegment.makeSegments(val));\n return acc;\n }, []);\n return qrcodegen.QrCode.encodeSegments(\n segments,\n ERROR_LEVEL_MAP[level],\n minVersion,\n undefined,\n undefined,\n boostLevel\n );\n};\n","/**\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE\n */\n\nimport { ChangeDetectionStrategy, Component, effect, input } from '@angular/core';\n\nimport { CrossOrigin, Excavation, ImageSettings, Modules } from './typing';\nimport { DEFAULT_BACKGROUND_COLOR, DEFAULT_FRONT_COLOR, excavateModules, generatePath } from './utils';\n\n@Component({\n changeDetection: ChangeDetectionStrategy.OnPush,\n selector: 'nz-qrcode-svg',\n exportAs: 'nzQRCodeSVG',\n template: `\n \n `,\n styles: `\n :host {\n display: block;\n line-height: 0;\n }\n `\n})\nexport class NzQrcodeSvgComponent {\n readonly icon = input('');\n readonly color = input(DEFAULT_FRONT_COLOR);\n readonly bgColor = input(DEFAULT_BACKGROUND_COLOR);\n readonly imageSettings = input();\n readonly size = input(160);\n readonly margin = input(0);\n readonly calculatedImageSettings = input<{\n x: number;\n y: number;\n h: number;\n w: number;\n excavation: Excavation | null;\n opacity: number;\n crossOrigin: CrossOrigin;\n } | null>(null);\n readonly cells = input([]);\n readonly numCells = input(0);\n\n viewBox: string = '';\n backgroundPath: string = '';\n foregroundPath: string = '';\n\n constructor() {\n effect(() => {\n this.initializeViewBox();\n this.generatePaths();\n });\n }\n\n private initializeViewBox(): void {\n this.viewBox = `0 0 ${this.numCells()} ${this.numCells()}`;\n this.backgroundPath = `M0,0 h${this.numCells()}v${this.numCells()}H0z`;\n }\n\n private generatePaths(): void {\n const cellsToDraw = this.getCellsToDraw();\n this.foregroundPath = generatePath(cellsToDraw, this.margin());\n }\n\n private getCellsToDraw(): Modules {\n if (this.shouldExcavateCells()) {\n return excavateModules(this.cells(), this.calculatedImageSettings()!.excavation!);\n }\n return this.cells();\n }\n\n private shouldExcavateCells(): boolean {\n const settings = this.calculatedImageSettings();\n return settings !== null && !!this.icon() && settings.excavation !== null;\n }\n\n protected shouldShowIcon(): boolean {\n return !!this.icon() && this.calculatedImageSettings() != null;\n }\n\n protected getImageX(): number {\n return (this.calculatedImageSettings()?.x || 0) + this.margin();\n }\n\n protected getImageY(): number {\n return (this.calculatedImageSettings()?.y || 0) + this.margin();\n }\n}\n","/**\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE\n */\n\nimport { isPlatformBrowser } from '@angular/common';\nimport {\n ChangeDetectionStrategy,\n Component,\n computed,\n effect,\n inject,\n input,\n output,\n PLATFORM_ID,\n signal,\n Signal,\n TemplateRef\n} from '@angular/core';\nimport { toSignal } from '@angular/core/rxjs-interop';\nimport { map } from 'rxjs/operators';\n\nimport { NzButtonModule } from 'ng-zorro-antd/button';\nimport { NzStringTemplateOutletDirective } from 'ng-zorro-antd/core/outlet';\nimport { NzI18nService, NzQRCodeI18nInterface } from 'ng-zorro-antd/i18n';\nimport { NzIconModule } from 'ng-zorro-antd/icon';\nimport { NzSpinModule } from 'ng-zorro-antd/spin';\n\nimport { NzQrcodeCanvasComponent } from './qrcode-canvas.component';\nimport { createQRCodeData } from './qrcode-data';\nimport { NzQrcodeSvgComponent } from './qrcode-svg.component';\nimport { CrossOrigin, ErrorCorrectionLevel, Excavation, ImageSettings, Modules } from './typing';\nimport { DEFAULT_BACKGROUND_COLOR, DEFAULT_FRONT_COLOR, DEFAULT_MINVERSION } from './utils';\n\n@Component({\n changeDetection: ChangeDetectionStrategy.OnPush,\n selector: 'nz-qrcode',\n exportAs: 'nzQRCode',\n template: `\n @if (!!nzStatusRender()) {\n