Fix locationOf with empty string #1129
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…ction with different writing modes.
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When using
book.locations.generateandrendition.displaywith a proper fraction (between 0 and 1) value, it has a possibility that the ePub CFI range contains only an empty string. It causes this line returns a all-zeros position:epub.js/src/contents.js
Line 658 in a1e77b7
This browser inspector screenshot shows the problem:
To fix this problem, we can use the parent element containing the range to get a valid bounding rect.
position = range.startContainer.parentElement.getBoundingClientRect();