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Added inverted option. #43

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Added inverted option. #43

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ff107cf
Added inverted option.
MarijnStevens Apr 16, 2021
53f8779
Bug fix
MarijnStevens May 2, 2021
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5 changes: 5 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,11 @@ If you want to display small output, provide `opts` with `small`:
console.log(qrcode)
});

If you want to invert the output, provide `opts` with `small`:

qrcode.generate('This will be a inverted QRCode, yeey!', inverted: true});


# Command-Line

## Install
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22 changes: 17 additions & 5 deletions lib/main.js
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Expand Up @@ -4,6 +4,9 @@ var QRCode = require('./../vendor/QRCode'),
white = "\033[47m \033[0m",
toCell = function (isBlack) {
return isBlack ? black : white;
}
toCellInverted = function (isBlack) {
return isBlack ? white : black;
},
repeat = function (color) {
return {
Expand Down Expand Up @@ -52,9 +55,17 @@ module.exports = {
BLACK_ALL: ' ',
};

if(opts.inverted) {
var clone = Object.assign({}, platte);
platte.WHITE_ALL = clone.BLACK_ALL;
platte.WHITE_BLACK = clone.BLACK_WHITE;
platte.BLACK_WHITE = clone.WHITE_BLACK;
platte.BLACK_ALL = clone.WHITE_ALL;
}

var borderTop = repeat(platte.BLACK_WHITE).times(moduleCount + 3);
var borderBottom = repeat(platte.WHITE_BLACK).times(moduleCount + 3);
output += borderTop + '\n';
output += (!opts.inverted ? borderTop : repeat(platte.WHITE_ALL).times(moduleCount + 3)) + '\n';

for (var row = 0; row < moduleCount; row += 2) {
output += platte.WHITE_ALL;
Expand All @@ -78,13 +89,14 @@ module.exports = {
output += borderBottom;
}
} else {
var border = repeat(white).times(qrcode.getModuleCount() + 3);
var flip = opts && opts.inverted;
var border = repeat(flip ? black : white).times(qrcode.getModuleCount() + 3);

output += border + '\n';
qrcode.modules.forEach(function (row) {
output += white;
output += row.map(toCell).join('');
output += white + '\n';
output += flip ? black : white;
output += row.map( (opts && opts.inverted) ? toCellInverted : toCell).join('');
output += (flip ? black : white) + '\n';
});
output += border;
}
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