[Webkit-unassigned] [Bug 85062] Support CSS 3 Paged Media Margin Boxes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=85062

zzy8200 at gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |zzy8200 at gmail.com

--- Comment #12 from zzy8200 at gmail.com ---
I already see implementation here:
https://trac.webkit.org/browser/webkit/trunk/Source/WebCore/page/PrintContext.cpp

Is there specific reason this feature is still behind a flag?

FloatBoxExtent PrintContext::computedPageMargin(FloatBoxExtent printMargin)
{
    if (!frame() || !frame()->document())
        return printMargin;

    if (!RuntimeEnabledFeatures::sharedFeatures().pageAtRuleSupportEnabled())
        return printMargin;

    // FIXME: Currently, no pseudo-class is supported.
    auto style = frame()->document()->styleScope().resolver().styleForPage(0);

    float pixelToPointScaleFactor = 1 / CSSPrimitiveValue::conversionToCanonicalUnitsScaleFactor(CSSUnitType::CSS_PT).value();

    return {
        style->marginTop().isAuto() ? printMargin.top() : style->marginTop().value() * pixelToPointScaleFactor,
        style->marginRight().isAuto() ? printMargin.right() : style->marginRight().value() * pixelToPointScaleFactor,
        style->marginBottom().isAuto() ? printMargin.bottom() : style->marginBottom().value() * pixelToPointScaleFactor,
        style->marginLeft().isAuto() ? printMargin.left() : style->marginLeft().value() * pixelToPointScaleFactor
    };
}

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