status-im/QR-Code-generator
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Added and updated 4 comments in all language versions.

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Project Nayuki
2018-08-22 19:22:00 +00:00
parent a2977e6351
commit d1f53e6e7d
8 changed files with 56 additions and 49 deletions
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javascript/qrcodegen.js
+8 -7
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@@ -245,7 +245,7 @@ var qrcodegen = new function() {
setFunctionModule(size - 1 - i, 8, getBit(data, i));
for (var i = 8; i < 15; i++)
setFunctionModule(8, size - 15 + i, getBit(data, i));
setFunctionModule(8, size - 8, true);
setFunctionModule(8, size - 8, true); // Always black
}
@@ -377,10 +377,11 @@ var qrcodegen = new function() {
}
// XORs the data modules in this QR Code with the given mask pattern. Due to XOR's mathematical
// properties, calling applyMask(m) twice with the same value is equivalent to no change at all.
// This means it is possible to apply a mask, undo it, and try another mask. Note that a final
// well-formed QR Code symbol needs exactly one mask applied (not zero, not two, etc.).
// 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 symbol needs exactly one (not zero, two, etc.) mask applied.
function applyMask(mask) {
if (mask < 0 || mask > 7)
throw "Mask value out of range";
@@ -545,12 +546,12 @@ var qrcodegen = new function() {
}
// Increase the error correction level while the data still fits in the current version number
[this.Ecc.MEDIUM, this.Ecc.QUARTILE, this.Ecc.HIGH].forEach(function(newEcl) {
[this.Ecc.MEDIUM, this.Ecc.QUARTILE, this.Ecc.HIGH].forEach(function(newEcl) { // From low to high
if (boostEcl && dataUsedBits <= QrCode.getNumDataCodewords(version, newEcl) * 8)
ecl = newEcl;
});
// Create the data bit string by concatenating all segments
// Concatenate all segments to create the data bit string
var dataCapacityBits = QrCode.getNumDataCodewords(version, ecl) * 8;
var bb = new BitBuffer();
segs.forEach(function(seg) {