react-native-esc-pos-printer
Version:
An unofficial React Native library for printing on an EPSON TM printer with the Epson ePOS SDK for iOS and Epson ePOS SDK for Android
63 lines (62 loc) • 1.85 kB
JavaScript
;
// @ts-ignore
import wordwrap from 'wordwrapjs';
function fillGap(symbol, length) {
return symbol.repeat(length);
}
function getTextsWidths(fullLength, textToWrap, textToWrapWidth, right, left) {
let leftTextWidth;
let rightTextWidth;
if (!textToWrapWidth) {
const halfLength = Math.floor(fullLength / 2);
if (textToWrap === 'left') {
leftTextWidth = right.length < fullLength ? fullLength - right.length : halfLength;
} else {
leftTextWidth = left.length < fullLength ? left.length : halfLength;
}
} else {
if (textToWrap === 'left') {
leftTextWidth = textToWrapWidth * fullLength;
} else {
leftTextWidth = (1 - textToWrapWidth) * fullLength;
}
}
rightTextWidth = fullLength - leftTextWidth;
return {
leftTextWidth,
rightTextWidth
};
}
export const spaceBetween = (length, {
left,
right,
textToWrap = 'left',
textToWrapWidth,
gapSymbol = ' ',
noTrim
}) => {
const {
leftTextWidth,
rightTextWidth
} = getTextsWidths(length, textToWrap, textToWrapWidth || 0, right, left);
const leftWrappedTextArray = wordwrap.wrap(left, {
width: leftTextWidth,
break: true,
noTrim
}).split('\n');
const rightWrappedTextArray = wordwrap.wrap(right, {
width: rightTextWidth,
break: true,
noTrim
}).split('\n');
return Array.from({
length: Math.max(leftWrappedTextArray.length, rightWrappedTextArray.length)
}, (_, index) => {
const leftText = leftWrappedTextArray[index] || '';
const rightText = rightWrappedTextArray[index] || '';
const spacesAmount = length - leftText.length - rightText.length;
const gaps = index === 0 ? fillGap(gapSymbol, spacesAmount) : fillGap(' ', spacesAmount);
return `${leftText}${gaps}${rightText}`;
}).join('\n');
};
//# sourceMappingURL=spaceBetween.js.map