Bug 257429

Hi Team,

We fail following test in WebKit ToT:

Testcase: https://jsfiddle.net/czgum406/show

Blink Commit: https://src.chromium.org/viewvc/blink?view=revision&revision=176936

WebKit Source: https://searchfox.org/wubkat/source/Source/WebCore/rendering/svg/SVGTextQuery.cpp#524

This works:

________

// Offset of the fragment within the text box.
    unsigned boxOffset = fragment.characterOffset - queryData->textBox->start();
    
    FloatRect extent;
    for (unsigned i = 0; i < fragment.length; ++i) {
        unsigned startPosition = data->processedCharacters + boxOffset + i;
        unsigned endPosition = startPosition + 1;
        if (!mapStartEndPositionsIntoFragmentCoordinates(queryData, fragment, startPosition, endPosition))
            continue;
        calculateGlyphBoundaries(queryData, fragment, startPosition, extent);
        if (extent.contains(data->position)) {
            data->processedCharacters += boxOffset + I;

_________

Just wanted to raise so we can fix it.

Thanks!