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// src/index.tsx
import React from "react";
// src/third-party/qrcodegen/index.ts
/**
* @license QR Code generator library (TypeScript)
* Copyright (c) Project Nayuki.
* SPDX-License-Identifier: MIT
*/
var qrcodegen;
((qrcodegen2) => {
const _QrCode = class _QrCode {
/*-- Constructor (low level) and fields --*/
// Creates a new QR Code with the given version number,
// error correction level, data codeword bytes, and mask number.
// This is a low-level API that most users should not use directly.
// A mid-level API is the encodeSegments() function.
constructor(version, errorCorrectionLevel, dataCodewords, msk) {
this.version = version;
this.errorCorrectionLevel = errorCorrectionLevel;
// The modules of this QR Code (false = light, true = dark).
// Immutable after constructor finishes. Accessed through getModule().
this.modules = [];
// Indicates function modules that are not subjected to masking. Discarded when constructor finishes.
this.isFunction = [];
if (version < _QrCode.MIN_VERSION || version > _QrCode.MAX_VERSION)
throw new RangeError("Version value out of range");
if (msk < -1 || msk > 7)
throw new RangeError("Mask value out of range");
this.size = version * 4 + 17;
let row = [];
for (let i = 0; i < this.size; i++)
row.push(false);
for (let i = 0; i < this.size; i++) {
this.modules.push(row.slice());
this.isFunction.push(row.slice());
}
this.drawFunctionPatterns();
const allCodewords = this.addEccAndInterleave(dataCodewords);
this.drawCodewords(allCodewords);
if (msk == -1) {
let minPenalty = 1e9;
for (let i = 0; i < 8; i++) {
this.applyMask(i);
this.drawFormatBits(i);
const penalty = this.getPenaltyScore();
if (penalty < minPenalty) {
msk = i;
minPenalty = penalty;
}
this.applyMask(i);
}
}
assert(0 <= msk && msk <= 7);
this.mask = msk;
this.applyMask(msk);
this.drawFormatBits(msk);
this.isFunction = [];
}
/*-- Static factory functions (high level) --*/
// Returns a QR Code representing the given Unicode text string at the given error correction level.
// As a conservative upper bound, this function is guaranteed to succeed for strings that have 738 or fewer
// Unicode code points (not UTF-16 code units) if the low error correction level is used. The smallest possible
// QR Code version is automatically chosen for the output. The ECC level of the result may be higher than the
// ecl argument if it can be done without increasing the version.
static encodeText(text, ecl) {
const segs = qrcodegen2.QrSegment.makeSegments(text);
return _QrCode.encodeSegments(segs, ecl);
}
// Returns a QR Code representing the given binary data at the given error correction level.
// This function always encodes using the binary segment mode, not any text mode. The maximum number of
// bytes allowed is 2953. The smallest possible QR Code version is automatically chosen for the output.
// The ECC level of the result may be higher than the ecl argument if it can be done without increasing the version.
static encodeBinary(data, ecl) {
const seg = qrcodegen2.QrSegment.makeBytes(data);
return _QrCode.encodeSegments([seg], ecl);
}
/*-- Static factory functions (mid level) --*/
// Returns a QR Code representing the given segments with the given encoding parameters.
// The smallest possible QR Code version within the given range is automatically
// chosen for the output. Iff boostEcl is true, then the ECC level of the result
// may be higher than the ecl argument if it can be done without increasing the
// version. The mask number is either between 0 to 7 (inclusive) to force that
// mask, or -1 to automatically choose an appropriate mask (which may be slow).
// This function allows the user to create a custom sequence of segments that switches
// between modes (such as alphanumeric and byte) to encode text in less space.
// This is a mid-level API; the high-level API is encodeText() and encodeBinary().
static encodeSegments(segs, ecl, minVersion = 1, maxVersion = 40, mask = -1, boostEcl = true) {
if (!(_QrCode.MIN_VERSION <= minVersion && minVersion <= maxVersion && maxVersion <= _QrCode.MAX_VERSION) || mask < -1 || mask > 7)
throw new RangeError("Invalid value");
let version;
let dataUsedBits;
for (version = minVersion; ; version++) {
const dataCapacityBits2 = _QrCode.getNumDataCodewords(version, ecl) * 8;
const usedBits = QrSegment.getTotalBits(segs, version);
if (usedBits <= dataCapacityBits2) {
dataUsedBits = usedBits;
break;
}
if (version >= maxVersion)
throw new RangeError("Data too long");
}
for (const newEcl of [_QrCode.Ecc.MEDIUM, _QrCode.Ecc.QUARTILE, _QrCode.Ecc.HIGH]) {
if (boostEcl && dataUsedBits <= _QrCode.getNumDataCodewords(version, newEcl) * 8)
ecl = newEcl;
}
let bb = [];
for (const seg of segs) {
appendBits(seg.mode.modeBits, 4, bb);
appendBits(seg.numChars, seg.mode.numCharCountBits(version), bb);
for (const b of seg.getData())
bb.push(b);
}
assert(bb.length == dataUsedBits);
const dataCapacityBits = _QrCode.getNumDataCodewords(version, ecl) * 8;
assert(bb.length <= dataCapacityBits);
appendBits(0, Math.min(4, dataCapacityBits - bb.length), bb);
appendBits(0, (8 - bb.length % 8) % 8, bb);
assert(bb.length % 8 == 0);
for (let padByte = 236; bb.length < dataCapacityBits; padByte ^= 236 ^ 17)
appendBits(padByte, 8, bb);
let dataCodewords = [];
while (dataCodewords.length * 8 < bb.length)
dataCodewords.push(0);
bb.forEach((b, i) => dataCodewords[i >>> 3] |= b << 7 - (i & 7));
return new _QrCode(version, ecl, dataCodewords, mask);
}
/*-- Accessor methods --*/
// Returns the color of the module (pixel) at the given coordinates, which is false
// for light or true for dark. The top left corner has the coordinates (x=0, y=0).
// If the given coordinates are out of bounds, then false (light) is returned.
getModule(x, y) {
return 0 <= x && x < this.size && 0 <= y && y < this.size && this.modules[y][x];
}
// Modified to expose modules for easy access
getModules() {
return this.modules;
}
/*-- Private helper methods for constructor: Drawing function modules --*/
// Reads this object's version field, and draws and marks all function modules.
drawFunctionPatterns() {
for (let i = 0; i < this.size; i++) {
this.setFunctionModule(6, i, i % 2 == 0);
this.setFunctionModule(i, 6, i % 2 == 0);
}
this.drawFinderPattern(3, 3);
this.drawFinderPattern(this.size - 4, 3);
this.drawFinderPattern(3, this.size - 4);
const alignPatPos = this.getAlignmentPatternPositions();
const numAlign = alignPatPos.length;
for (let i = 0; i < numAlign; i++) {
for (let j = 0; j < numAlign; j++) {
if (!(i == 0 && j == 0 || i == 0 && j == numAlign - 1 || i == numAlign - 1 && j == 0))
this.drawAlignmentPattern(alignPatPos[i], alignPatPos[j]);
}
}
this.drawFormatBits(0);
this.drawVersion();
}
// Draws two copies of the format bits (with its own error correction code)
// based on the given mask and this object's error correction level field.
drawFormatBits(mask) {
const data = this.errorCorrectionLevel.formatBits << 3 | mask;
let rem = data;
for (let i = 0; i < 10; i++)
rem = rem << 1 ^ (rem >>> 9) * 1335;
const bits = (data << 10 | rem) ^ 21522;
assert(bits >>> 15 == 0);
for (let i = 0; i <= 5; i++)
this.setFunctionModule(8, i, getBit(bits, i));
this.setFunctionModule(8, 7, getBit(bits, 6));
this.setFunctionModule(8, 8, getBit(bits, 7));
this.setFunctionModule(7, 8, getBit(bits, 8));
for (let i = 9; i < 15; i++)
this.setFunctionModule(14 - i, 8, getBit(bits, i));
for (let i = 0; i < 8; i++)
this.setFunctionModule(this.size - 1 - i, 8, getBit(bits, i));
for (let i = 8; i < 15; i++)
this.setFunctionModule(8, this.size - 15 + i, getBit(bits, i));
this.setFunctionModule(8, this.size - 8, true);
}
// Draws two copies of the version bits (with its own error correction code),
// based on this object's version field, iff 7 <= version <= 40.
drawVersion() {
if (this.version < 7)
return;
let rem = this.version;
for (let i = 0; i < 12; i++)
rem = rem << 1 ^ (rem >>> 11) * 7973;
const bits = this.version << 12 | rem;
assert(bits >>> 18 == 0);
for (let i = 0; i < 18; i++) {
const color = getBit(bits, i);
const a = this.size - 11 + i % 3;
const b = Math.floor(i / 3);
this.setFunctionModule(a, b, color);
this.setFunctionModule(b, a, color);
}
}
// Draws a 9*9 finder pattern including the border separator,
// with the center module at (x, y). Modules can be out of bounds.
drawFinderPattern(x, y) {
for (let dy = -4; dy <= 4; dy++) {
for (let dx = -4; dx <= 4; dx++) {
const dist = Math.max(Math.abs(dx), Math.abs(dy));
const xx = x + dx;
const yy = y + dy;
if (0 <= xx && xx < this.size && 0 <= yy && yy < this.size)
this.setFunctionModule(xx, yy, dist != 2 && dist != 4);
}
}
}
// Draws a 5*5 alignment pattern, with the center module
// at (x, y). All modules must be in bounds.
drawAlignmentPattern(x, y) {
for (let dy = -2; dy <= 2; dy++) {
for (let dx = -2; dx <= 2; dx++)
this.setFunctionModule(x + dx, y + dy, Math.max(Math.abs(dx), Math.abs(dy)) != 1);
}
}
// Sets the color of a module and marks it as a function module.
// Only used by the constructor. Coordinates must be in bounds.
setFunctionModule(x, y, isDark) {
this.modules[y][x] = isDark;
this.isFunction[y][x] = true;
}
/*-- Private helper methods for constructor: Codewords and masking --*/
// Returns a new byte string representing the given data with the appropriate error correction
// codewords appended to it, based on this object's version and error correction level.
addEccAndInterleave(data) {
const ver = this.version;
const ecl = this.errorCorrectionLevel;
if (data.length != _QrCode.getNumDataCodewords(ver, ecl))
throw new RangeError("Invalid argument");
const numBlocks = _QrCode.NUM_ERROR_CORRECTION_BLOCKS[ecl.ordinal][ver];
const blockEccLen = _QrCode.ECC_CODEWORDS_PER_BLOCK[ecl.ordinal][ver];
const rawCodewords = Math.floor(_QrCode.getNumRawDataModules(ver) / 8);
const numShortBlocks = numBlocks - rawCodewords % numBlocks;
const shortBlockLen = Math.floor(rawCodewords / numBlocks);
let blocks = [];
const rsDiv = _QrCode.reedSolomonComputeDivisor(blockEccLen);
for (let i = 0, k = 0; i < numBlocks; i++) {
let dat = data.slice(k, k + shortBlockLen - blockEccLen + (i < numShortBlocks ? 0 : 1));
k += dat.length;
const ecc = _QrCode.reedSolomonComputeRemainder(dat, rsDiv);
if (i < numShortBlocks)
dat.push(0);
blocks.push(dat.concat(ecc));
}
let result = [];
for (let i = 0; i < blocks[0].length; i++) {
blocks.forEach((block, j) => {
if (i != shortBlockLen - blockEccLen || j >= numShortBlocks)
result.push(block[i]);
});
}
assert(result.length == rawCodewords);
return result;
}
// Draws the given sequence of 8-bit codewords (data and error correction) onto the entire
// data area of this QR Code. Function modules need to be marked off before this is called.
drawCodewords(data) {
if (data.length != Math.floor(_QrCode.getNumRawDataModules(this.version) / 8))
throw new RangeError("Invalid argument");
let i = 0;
for (let right = this.size - 1; right >= 1; right -= 2) {
if (right == 6)
right = 5;
for (let vert = 0; vert < this.size; vert++) {
for (let j = 0; j < 2; j++) {
const x = right - j;
const upward = (right + 1 & 2) == 0;
const y = upward ? this.size - 1 - vert : vert;
if (!this.isFunction[y][x] && i < data.length * 8) {
this.modules[y][x] = getBit(data[i >>> 3], 7 - (i & 7));
i++;
}
}
}
}
assert(i == data.length * 8);
}
// XORs the codeword modules in this QR Code with the given mask pattern.
// The function modules must be marked and the codeword bits must be drawn
// before masking. Due to the arithmetic of XOR, calling applyMask() with
// the same mask value a second time will undo the mask. A final well-formed
// QR Code needs exactly one (not zero, two, etc.) mask applied.
applyMask(mask) {
if (mask < 0 || mask > 7)
throw new RangeError("Mask value out of range");
for (let y = 0; y < this.size; y++) {
for (let x = 0; x < this.size; x++) {
let invert;
switch (mask) {
case 0:
invert = (x + y) % 2 == 0;
break;
case 1:
invert = y % 2 == 0;
break;
case 2:
invert = x % 3 == 0;
break;
case 3:
invert = (x + y) % 3 == 0;
break;
case 4:
invert = (Math.floor(x / 3) + Math.floor(y / 2)) % 2 == 0;
break;
case 5:
invert = x * y % 2 + x * y % 3 == 0;
break;
case 6:
invert = (x * y % 2 + x * y % 3) % 2 == 0;
break;
case 7:
invert = ((x + y) % 2 + x * y % 3) % 2 == 0;
break;
default:
throw new Error("Unreachable");
}
if (!this.isFunction[y][x] && invert)
this.modules[y][x] = !this.modules[y][x];
}
}
}
// Calculates and returns the penalty score based on state of this QR Code's current modules.
// This is used by the automatic mask choice algorithm to find the mask pattern that yields the lowest score.
getPenaltyScore() {
let result = 0;
for (let y = 0; y < this.size; y++) {
let runColor = false;
let runX = 0;
let runHistory = [0, 0, 0, 0, 0, 0, 0];
for (let x = 0; x < this.size; x++) {
if (this.modules[y][x] == runColor) {
runX++;
if (runX == 5)
result += _QrCode.PENALTY_N1;
else if (runX > 5)
result++;
} else {
this.finderPenaltyAddHistory(runX, runHistory);
if (!runColor)
result += this.finderPenaltyCountPatterns(runHistory) * _QrCode.PENALTY_N3;
runColor = this.modules[y][x];
runX = 1;
}
}
result += this.finderPenaltyTerminateAndCount(runColor, runX, runHistory) * _QrCode.PENALTY_N3;
}
for (let x = 0; x < this.size; x++) {
let runColor = false;
let runY = 0;
let runHistory = [0, 0, 0, 0, 0, 0, 0];
for (let y = 0; y < this.size; y++) {
if (this.modules[y][x] == runColor) {
runY++;
if (runY == 5)
result += _QrCode.PENALTY_N1;
else if (runY > 5)
result++;
} else {
this.finderPenaltyAddHistory(runY, runHistory);
if (!runColor)
result += this.finderPenaltyCountPatterns(runHistory) * _QrCode.PENALTY_N3;
runColor = this.modules[y][x];
runY = 1;
}
}
result += this.finderPenaltyTerminateAndCount(runColor, runY, runHistory) * _QrCode.PENALTY_N3;
}
for (let y = 0; y < this.size - 1; y++) {
for (let x = 0; x < this.size - 1; x++) {
const color = this.modules[y][x];
if (color == this.modules[y][x + 1] && color == this.modules[y + 1][x] && color == this.modules[y + 1][x + 1])
result += _QrCode.PENALTY_N2;
}
}
let dark = 0;
for (const row of this.modules)
dark = row.reduce((sum, color) => sum + (color ? 1 : 0), dark);
const total = this.size * this.size;
const k = Math.ceil(Math.abs(dark * 20 - total * 10) / total) - 1;
assert(0 <= k && k <= 9);
result += k * _QrCode.PENALTY_N4;
assert(0 <= result && result <= 2568888);
return result;
}
/*-- Private helper functions --*/
// Returns an ascending list of positions of alignment patterns for this version number.
// Each position is in the range [0,177), and are used on both the x and y axes.
// This could be implemented as lookup table of 40 variable-length lists of integers.
getAlignmentPatternPositions() {
if (this.version == 1)
return [];
else {
const numAlign = Math.floor(this.version / 7) + 2;
const step = this.version == 32 ? 26 : Math.ceil((this.version * 4 + 4) / (numAlign * 2 - 2)) * 2;
let result = [6];
for (let pos = this.size - 7; result.length < numAlign; pos -= step)
result.splice(1, 0, pos);
return result;
}
}
// Returns the number of data bits that can be stored in a QR Code of the given version number, after
// all function modules are excluded. This includes remainder bits, so it might not be a multiple of 8.
// The result is in the range [208, 29648]. This could be implemented as a 40-entry lookup table.
static getNumRawDataModules(ver) {
if (ver < _QrCode.MIN_VERSION || ver > _QrCode.MAX_VERSION)
throw new RangeError("Version number out of range");
let result = (16 * ver + 128) * ver + 64;
if (ver >= 2) {
const numAlign = Math.floor(ver / 7) + 2;
result -= (25 * numAlign - 10) * numAlign - 55;
if (ver >= 7)
result -= 36;
}
assert(208 <= result && result <= 29648);
return result;
}
// Returns the number of 8-bit data (i.e. not error correction) codewords contained in any
// QR Code of the given version number and error correction level, with remainder bits discarded.
// This stateless pure function could be implemented as a (40*4)-cell lookup table.
static getNumDataCodewords(ver, ecl) {
return Math.floor(_QrCode.getNumRawDataModules(ver) / 8) - _QrCode.ECC_CODEWORDS_PER_BLOCK[ecl.ordinal][ver] * _QrCode.NUM_ERROR_CORRECTION_BLOCKS[ecl.ordinal][ver];
}
// Returns a Reed-Solomon ECC generator polynomial for the given degree. This could be
// implemented as a lookup table over all possible parameter values, instead of as an algorithm.
static reedSolomonComputeDivisor(degree) {
if (degree < 1 || degree > 255)
throw new RangeError("Degree out of range");
let result = [];
for (let i = 0; i < degree - 1; i++)
result.push(0);
result.push(1);
let root = 1;
for (let i = 0; i < degree; i++) {
for (let j = 0; j < result.length; j++) {
result[j] = _QrCode.reedSolomonMultiply(result[j], root);
if (j + 1 < result.length)
result[j] ^= result[j + 1];
}
root = _QrCode.reedSolomonMultiply(root, 2);
}
return result;
}
// Returns the Reed-Solomon error correction codeword for the given data and divisor polynomials.
static reedSolomonComputeRemainder(data, divisor) {
let result = divisor.map((_) => 0);
for (const b of data) {
const factor = b ^ result.shift();
result.push(0);
divisor.forEach((coef, i) => result[i] ^= _QrCode.reedSolomonMultiply(coef, factor));
}
return result;
}
// Returns the product of the two given field elements modulo GF(2^8/0x11D). The arguments and result
// are unsigned 8-bit integers. This could be implemented as a lookup table of 256*256 entries of uint8.
static reedSolomonMultiply(x, y) {
if (x >>> 8 != 0 || y >>> 8 != 0)
throw new RangeError("Byte out of range");
let z = 0;
for (let i = 7; i >= 0; i--) {
z = z << 1 ^ (z >>> 7) * 285;
z ^= (y >>> i & 1) * x;
}
assert(z >>> 8 == 0);
return z;
}
// Can only be called immediately after a light run is added, and
// returns either 0, 1, or 2. A helper function for getPenaltyScore().
finderPenaltyCountPatterns(runHistory) {
const n = runHistory[1];
assert(n <= this.size * 3);
const core = n > 0 && runHistory[2] == n && runHistory[3] == n * 3 && runHistory[4] == n && runHistory[5] == n;
return (core && runHistory[0] >= n * 4 && runHistory[6] >= n ? 1 : 0) + (core && runHistory[6] >= n * 4 && runHistory[0] >= n ? 1 : 0);
}
// Must be called at the end of a line (row or column) of modules. A helper function for getPenaltyScore().
finderPenaltyTerminateAndCount(currentRunColor, currentRunLength, runHistory) {
if (currentRunColor) {
this.finderPenaltyAddHistory(currentRunLength, runHistory);
currentRunLength = 0;
}
currentRunLength += this.size;
this.finderPenaltyAddHistory(currentRunLength, runHistory);
return this.finderPenaltyCountPatterns(runHistory);
}
// Pushes the given value to the front and drops the last value. A helper function for getPenaltyScore().
finderPenaltyAddHistory(currentRunLength, runHistory) {
if (runHistory[0] == 0)
currentRunLength += this.size;
runHistory.pop();
runHistory.unshift(currentRunLength);
}
};
/*-- Constants and tables --*/
// The minimum version number supported in the QR Code Model 2 standard.
_QrCode.MIN_VERSION = 1;
// The maximum version number supported in the QR Code Model 2 standard.
_QrCode.MAX_VERSION = 40;
// For use in getPenaltyScore(), when evaluating which mask is best.
_QrCode.PENALTY_N1 = 3;
_QrCode.PENALTY_N2 = 3;
_QrCode.PENALTY_N3 = 40;
_QrCode.PENALTY_N4 = 10;
_QrCode.ECC_CODEWORDS_PER_BLOCK = [
// Version: (note that index 0 is for padding, and is set to an illegal value)
//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
[-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, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30],
// Low
[-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, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28],
// Medium
[-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, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30],
// Quartile
[-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, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30]
// High
];
_QrCode.NUM_ERROR_CORRECTION_BLOCKS = [
// Version: (note that index 0 is for padding, and is set to an illegal value)
//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
[-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, 19, 19, 20, 21, 22, 24, 25],
// Low
[-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, 31, 33, 35, 37, 38, 40, 43, 45, 47, 49],
// Medium
[-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, 43, 45, 48, 51, 53, 56, 59, 62, 65, 68],
// Quartile
[-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, 48, 51, 54, 57, 60, 63, 66, 70, 74, 77, 81]
// High
];
let QrCode = _QrCode;
qrcodegen2.QrCode = _QrCode;
function appendBits(val, len, bb) {
if (len < 0 || len > 31 || val >>> len != 0)
throw new RangeError("Value out of range");
for (let i = len - 1; i >= 0; i--)
bb.push(val >>> i & 1);
}
function getBit(x, i) {
return (x >>> i & 1) != 0;
}
function assert(cond) {
if (!cond)
throw new Error("Assertion error");
}
const _QrSegment = class _QrSegment {
/*-- Constructor (low level) and fields --*/
// Creates a new QR Code segment with the given attributes and data.
// The character count (numChars) must agree with the mode and the bit buffer length,
// but the constraint isn't checked. The given bit buffer is cloned and stored.
constructor(mode, numChars, bitData) {
this.mode = mode;
this.numChars = numChars;
this.bitData = bitData;
if (numChars < 0)
throw new RangeError("Invalid argument");
this.bitData = bitData.slice();
}
/*-- Static factory functions (mid level) --*/
// Returns a segment representing the given binary data encoded in
// byte mode. All input byte arrays are acceptable. Any text string
// can be converted to UTF-8 bytes and encoded as a byte mode segment.
static makeBytes(data) {
let bb = [];
for (const b of data)
appendBits(b, 8, bb);
return new _QrSegment(_QrSegment.Mode.BYTE, data.length, bb);
}
// Returns a segment representing the given string of decimal digits encoded in numeric mode.
static makeNumeric(digits) {
if (!_QrSegment.isNumeric(digits))
throw new RangeError("String contains non-numeric characters");
let bb = [];
for (let i = 0; i < digits.length; ) {
const n = Math.min(digits.length - i, 3);
appendBits(parseInt(digits.substring(i, i + n), 10), n * 3 + 1, bb);
i += n;
}
return new _QrSegment(_QrSegment.Mode.NUMERIC, digits.length, bb);
}
// Returns a segment representing the given text string encoded in alphanumeric mode.
// The characters allowed are: 0 to 9, A to Z (uppercase only), space,
// dollar, percent, asterisk, plus, hyphen, period, slash, colon.
static makeAlphanumeric(text) {
if (!_QrSegment.isAlphanumeric(text))
throw new RangeError("String contains unencodable characters in alphanumeric mode");
let bb = [];
let i;
for (i = 0; i + 2 <= text.length; i += 2) {
let temp = _QrSegment.ALPHANUMERIC_CHARSET.indexOf(text.charAt(i)) * 45;
temp += _QrSegment.ALPHANUMERIC_CHARSET.indexOf(text.charAt(i + 1));
appendBits(temp, 11, bb);
}
if (i < text.length)
appendBits(_QrSegment.ALPHANUMERIC_CHARSET.indexOf(text.charAt(i)), 6, bb);
return new _QrSegment(_QrSegment.Mode.ALPHANUMERIC, text.length, bb);
}
// Returns a new mutable list of zero or more segments to represent the given Unicode text string.
// The result may use various segment modes and switch modes to optimize the length of the bit stream.
static makeSegments(text) {
if (text == "")
return [];
else if (_QrSegment.isNumeric(text))
return [_QrSegment.makeNumeric(text)];
else if (_QrSegment.isAlphanumeric(text))
return [_QrSegment.makeAlphanumeric(text)];
else
return [_QrSegment.makeBytes(_QrSegment.toUtf8ByteArray(text))];
}
// Returns a segment representing an Extended Channel Interpretation
// (ECI) designator with the given assignment value.
static makeEci(assignVal) {
let bb = [];
if (assignVal < 0)
throw new RangeError("ECI assignment value out of range");
else if (assignVal < 1 << 7)
appendBits(assignVal, 8, bb);
else if (assignVal < 1 << 14) {
appendBits(2, 2, bb);
appendBits(assignVal, 14, bb);
} else if (assignVal < 1e6) {
appendBits(6, 3, bb);
appendBits(assignVal, 21, bb);
} else
throw new RangeError("ECI assignment value out of range");
return new _QrSegment(_QrSegment.Mode.ECI, 0, bb);
}
// Tests whether the given string can be encoded as a segment in numeric mode.
// A string is encodable iff each character is in the range 0 to 9.
static isNumeric(text) {
return _QrSegment.NUMERIC_REGEX.test(text);
}
// Tests whether the given string can be encoded as a segment in alphanumeric mode.
// A string is encodable iff each character is in the following set: 0 to 9, A to Z
// (uppercase only), space, dollar, percent, asterisk, plus, hyphen, period, slash, colon.
static isAlphanumeric(text) {
return _QrSegment.ALPHANUMERIC_REGEX.test(text);
}
/*-- Methods --*/
// Returns a new copy of the data bits of this segment.
getData() {
return this.bitData.slice();
}
// (Package-private) Calculates and returns the number of bits needed to encode the given segments at
// the given version. The result is infinity if a segment has too many characters to fit its length field.
static getTotalBits(segs, version) {
let result = 0;
for (const seg of segs) {
const ccbits = seg.mode.numCharCountBits(version);
if (seg.numChars >= 1 << ccbits)
return Infinity;
result += 4 + ccbits + seg.bitData.length;
}
return result;
}
// Returns a new array of bytes representing the given string encoded in UTF-8.
static toUtf8ByteArray(str) {
str = encodeURI(str);
let result = [];
for (let i = 0; i < str.length; i++) {
if (str.charAt(i) != "%")
result.push(str.charCodeAt(i));
else {
result.push(parseInt(str.substring(i + 1, i + 3), 16));
i += 2;
}
}
return result;
}
};
/*-- Constants --*/
// Describes precisely all strings that are encodable in numeric mode.
_QrSegment.NUMERIC_REGEX = /^[0-9]*$/;
// Describes precisely all strings that are encodable in alphanumeric mode.
_QrSegment.ALPHANUMERIC_REGEX = /^[A-Z0-9 $%*+.\/:-]*$/;
// The set of all legal characters in alphanumeric mode,
// where each character value maps to the index in the string.
_QrSegment.ALPHANUMERIC_CHARSET = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:";
let QrSegment = _QrSegment;
qrcodegen2.QrSegment = _QrSegment;
})(qrcodegen || (qrcodegen = {}));
((qrcodegen2) => {
let QrCode;
((QrCode2) => {
const _Ecc = class _Ecc {
// The QR Code can tolerate about 30% erroneous codewords
/*-- Constructor and fields --*/
constructor(ordinal, formatBits) {
this.ordinal = ordinal;
this.formatBits = formatBits;
}
};
/*-- Constants --*/
_Ecc.LOW = new _Ecc(0, 1);
// The QR Code can tolerate about 7% erroneous codewords
_Ecc.MEDIUM = new _Ecc(1, 0);
// The QR Code can tolerate about 15% erroneous codewords
_Ecc.QUARTILE = new _Ecc(2, 3);
// The QR Code can tolerate about 25% erroneous codewords
_Ecc.HIGH = new _Ecc(3, 2);
let Ecc = _Ecc;
QrCode2.Ecc = _Ecc;
})(QrCode = qrcodegen2.QrCode || (qrcodegen2.QrCode = {}));
})(qrcodegen || (qrcodegen = {}));
((qrcodegen2) => {
let QrSegment;
((QrSegment2) => {
const _Mode = class _Mode {
/*-- Constructor and fields --*/
constructor(modeBits, numBitsCharCount) {
this.modeBits = modeBits;
this.numBitsCharCount = numBitsCharCount;
}
/*-- Method --*/
// (Package-private) Returns the bit width of the character count field for a segment in
// this mode in a QR Code at the given version number. The result is in the range [0, 16].
numCharCountBits(ver) {
return this.numBitsCharCount[Math.floor((ver + 7) / 17)];
}
};
/*-- Constants --*/
_Mode.NUMERIC = new _Mode(1, [10, 12, 14]);
_Mode.ALPHANUMERIC = new _Mode(2, [9, 11, 13]);
_Mode.BYTE = new _Mode(4, [8, 16, 16]);
_Mode.KANJI = new _Mode(8, [8, 10, 12]);
_Mode.ECI = new _Mode(7, [0, 0, 0]);
let Mode = _Mode;
QrSegment2.Mode = _Mode;
})(QrSegment = qrcodegen2.QrSegment || (qrcodegen2.QrSegment = {}));
})(qrcodegen || (qrcodegen = {}));
var qrcodegen_default = qrcodegen;
// src/index.tsx
/**
* @license qrcode.react
* Copyright (c) Paul O'Shannessy
* SPDX-License-Identifier: ISC
*/
var ERROR_LEVEL_MAP = {
L: qrcodegen_default.QrCode.Ecc.LOW,
M: qrcodegen_default.QrCode.Ecc.MEDIUM,
Q: qrcodegen_default.QrCode.Ecc.QUARTILE,
H: qrcodegen_default.QrCode.Ecc.HIGH
};
var DEFAULT_SIZE = 128;
var DEFAULT_LEVEL = "L";
var DEFAULT_BGCOLOR = "#FFFFFF";
var DEFAULT_FGCOLOR = "#000000";
var DEFAULT_INCLUDEMARGIN = false;
var DEFAULT_MINVERSION = 1;
var SPEC_MARGIN_SIZE = 4;
var DEFAULT_MARGIN_SIZE = 0;
var DEFAULT_IMG_SCALE = 0.1;
function generatePath(modules, margin = 0) {
const ops = [];
modules.forEach(function(row, y) {
let start = null;
row.forEach(function(cell, x) {
if (!cell && start !== null) {
ops.push(
`M${start + margin} ${y + margin}h${x - start}v1H${start + margin}z`
);
start = null;
return;
}
if (x === row.length - 1) {
if (!cell) {
return;
}
if (start === null) {
ops.push(`M${x + margin},${y + margin} h1v1H${x + margin}z`);
} else {
ops.push(
`M${start + margin},${y + margin} h${x + 1 - start}v1H${start + margin}z`
);
}
return;
}
if (cell && start === null) {
start = x;
}
});
});
return ops.join("");
}
function excavateModules(modules, excavation) {
return modules.slice().map((row, y) => {
if (y < excavation.y || y >= excavation.y + excavation.h) {
return row;
}
return row.map((cell, x) => {
if (x < excavation.x || x >= excavation.x + excavation.w) {
return cell;
}
return false;
});
});
}
function getImageSettings(cells, size, margin, imageSettings) {
if (imageSettings == null) {
return null;
}
const numCells = cells.length + margin * 2;
const defaultSize = Math.floor(size * DEFAULT_IMG_SCALE);
const scale = numCells / size;
const w = (imageSettings.width || defaultSize) * scale;
const h = (imageSettings.height || defaultSize) * scale;
const x = imageSettings.x == null ? cells.length / 2 - w / 2 : imageSettings.x * scale;
const y = imageSettings.y == null ? cells.length / 2 - h / 2 : imageSettings.y * scale;
const opacity = imageSettings.opacity == null ? 1 : imageSettings.opacity;
let excavation = null;
if (imageSettings.excavate) {
let floorX = Math.floor(x);
let floorY = Math.floor(y);
let ceilW = Math.ceil(w + x - floorX);
let ceilH = Math.ceil(h + y - floorY);
excavation = { x: floorX, y: floorY, w: ceilW, h: ceilH };
}
const crossOrigin = imageSettings.crossOrigin;
return { x, y, h, w, excavation, opacity, crossOrigin };
}
function getMarginSize(includeMargin, marginSize) {
if (marginSize != null) {
return Math.max(Math.floor(marginSize), 0);
}
return includeMargin ? SPEC_MARGIN_SIZE : DEFAULT_MARGIN_SIZE;
}
function useQRCode({
value,
level,
minVersion,
includeMargin,
marginSize,
imageSettings,
size,
boostLevel
}) {
let qrcode = React.useMemo(() => {
const values = Array.isArray(value) ? value : [value];
const segments = values.reduce((accum, v) => {
accum.push(...qrcodegen_default.QrSegment.makeSegments(v));
return accum;
}, []);
return qrcodegen_default.QrCode.encodeSegments(
segments,
ERROR_LEVEL_MAP[level],
minVersion,
void 0,
void 0,
boostLevel
);
}, [value, level, minVersion, boostLevel]);
const { cells, margin, numCells, calculatedImageSettings } = React.useMemo(() => {
let cells2 = qrcode.getModules();
const margin2 = getMarginSize(includeMargin, marginSize);
const numCells2 = cells2.length + margin2 * 2;
const calculatedImageSettings2 = getImageSettings(
cells2,
size,
margin2,
imageSettings
);
return {
cells: cells2,
margin: margin2,
numCells: numCells2,
calculatedImageSettings: calculatedImageSettings2
};
}, [qrcode, size, imageSettings, includeMargin, marginSize]);
return {
qrcode,
margin,
cells,
numCells,
calculatedImageSettings
};
}
var SUPPORTS_PATH2D = function() {
try {
new Path2D().addPath(new Path2D());
} catch (e) {
return false;
}
return true;
}();
var QRCodeCanvas = React.forwardRef(
function QRCodeCanvas2(props, forwardedRef) {
const _a = props, {
value,
size = DEFAULT_SIZE,
level = DEFAULT_LEVEL,
bgColor = DEFAULT_BGCOLOR,
fgColor = DEFAULT_FGCOLOR,
includeMargin = DEFAULT_INCLUDEMARGIN,
minVersion = DEFAULT_MINVERSION,
boostLevel,
marginSize,
imageSettings
} = _a, extraProps = __objRest(_a, [
"value",
"size",
"level",
"bgColor",
"fgColor",
"includeMargin",
"minVersion",
"boostLevel",
"marginSize",
"imageSettings"
]);
const _b = extraProps, { style } = _b, otherProps = __objRest(_b, ["style"]);
const imgSrc = imageSettings == null ? void 0 : imageSettings.src;
const _canvas = React.useRef(null);
const _image = React.useRef(null);
const setCanvasRef = React.useCallback(
(node) => {
_canvas.current = node;
if (typeof forwardedRef === "function") {
forwardedRef(node);
} else if (forwardedRef) {
forwardedRef.current = node;
}
},
[forwardedRef]
);
const [isImgLoaded, setIsImageLoaded] = React.useState(false);
const { margin, cells, numCells, calculatedImageSettings } = useQRCode({
value,
level,
minVersion,
boostLevel,
includeMargin,
marginSize,
imageSettings,
size
});
React.useEffect(() => {
if (_canvas.current != null) {
const canvas = _canvas.current;
const ctx = canvas.getContext("2d");
if (!ctx) {
return;
}
let cellsToDraw = cells;
const image = _image.current;
const haveImageToRender = calculatedImageSettings != null && image !== null && image.complete && image.naturalHeight !== 0 && image.naturalWidth !== 0;
if (haveImageToRender) {
if (calculatedImageSettings.excavation != null) {
cellsToDraw = excavateModules(
cells,
calculatedImageSettings.excavation
);
}
}
const pixelRatio = window.devicePixelRatio || 1;
canvas.height = canvas.width = size * pixelRatio;
const scale = size / numCells * pixelRatio;
ctx.scale(scale, scale);
ctx.fillStyle = bgColor;
ctx.fillRect(0, 0, numCells, numCells);
ctx.fillStyle = fgColor;
if (SUPPORTS_PATH2D) {
ctx.fill(new Path2D(generatePath(cellsToDraw, margin)));
} else {
cells.forEach(function(row, rdx) {
row.forEach(function(cell, cdx) {
if (cell) {
ctx.fillRect(cdx + margin, rdx + margin, 1, 1);
}
});
});
}
if (calculatedImageSettings) {
ctx.globalAlpha = calculatedImageSettings.opacity;
}
if (haveImageToRender) {
ctx.drawImage(
image,
calculatedImageSettings.x + margin,
calculatedImageSettings.y + margin,
calculatedImageSettings.w,
calculatedImageSettings.h
);
}
}
});
React.useEffect(() => {
setIsImageLoaded(false);
}, [imgSrc]);
const canvasStyle = __spreadValues({ height: size, width: size }, style);
let img = null;
if (imgSrc != null) {
img = /* @__PURE__ */ React.createElement(
"img",
{
src: imgSrc,
key: imgSrc,
style: { display: "none" },
onLoad: () => {
setIsImageLoaded(true);
},
ref: _image,
crossOrigin: calculatedImageSettings == null ? void 0 : calculatedImageSettings.crossOrigin
}
);
}
return /* @__PURE__ */ React.createElement(React.Fragment, null, /* @__PURE__ */ React.createElement(
"canvas",
__spreadValues({
style: canvasStyle,
height: size,
width: size,
ref: setCanvasRef,
role: "img"
}, otherProps)
), img);
}
);
QRCodeCanvas.displayName = "QRCodeCanvas";
var QRCodeSVG = React.forwardRef(
function QRCodeSVG2(props, forwardedRef) {
const _a = props, {
value,
size = DEFAULT_SIZE,
level = DEFAULT_LEVEL,
bgColor = DEFAULT_BGCOLOR,
fgColor = DEFAULT_FGCOLOR,
includeMargin = DEFAULT_INCLUDEMARGIN,
minVersion = DEFAULT_MINVERSION,
boostLevel,
title,
marginSize,
imageSettings
} = _a, otherProps = __objRest(_a, [
"value",
"size",
"level",
"bgColor",
"fgColor",
"includeMargin",
"minVersion",
"boostLevel",
"title",
"marginSize",
"imageSettings"
]);
const { margin, cells, numCells, calculatedImageSettings } = useQRCode({
value,
level,
minVersion,
boostLevel,
includeMargin,
marginSize,
imageSettings,
size
});
let cellsToDraw = cells;
let image = null;
if (imageSettings != null && calculatedImageSettings != null) {
if (calculatedImageSettings.excavation != null) {
cellsToDraw = excavateModules(
cells,
calculatedImageSettings.excavation
);
}
image = /* @__PURE__ */ React.createElement(
"image",
{
href: imageSettings.src,
height: calculatedImageSettings.h,
width: calculatedImageSettings.w,
x: calculatedImageSettings.x + margin,
y: calculatedImageSettings.y + margin,
preserveAspectRatio: "none",
opacity: calculatedImageSettings.opacity,
crossOrigin: calculatedImageSettings.crossOrigin
}
);
}
const fgPath = generatePath(cellsToDraw, margin);
return /* @__PURE__ */ React.createElement(
"svg",
__spreadValues({
height: size,
width: size,
viewBox: `0 0 ${numCells} ${numCells}`,
ref: forwardedRef,
role: "img"
}, otherProps),
!!title && /* @__PURE__ */ React.createElement("title", null, title),
/* @__PURE__ */ React.createElement(
"path",
{
fill: bgColor,
d: `M0,0 h${numCells}v${numCells}H0z`,
shapeRendering: "crispEdges"
}
),
/* @__PURE__ */ React.createElement("path", { fill: fgColor, d: fgPath, shapeRendering: "crispEdges" }),
image
);
}
);
QRCodeSVG.displayName = "QRCodeSVG";
export {
QRCodeCanvas,
QRCodeSVG
};
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