void RenderBoxModelObject::updateFromStyle()
{
RenderLayerModelObject::updateFromStyle();
RenderStyle* styleToUse = style();
setHasBoxDecorationBackground(calculateHasBoxDecorations());
setInline(styleToUse->isDisplayInlineType());
setPositionState(styleToUse->position());
setHorizontalWritingMode(styleToUse->isHorizontalWritingMode());
}
void LayoutMultiColumnSet::styleDidChange(StyleDifference diff, const ComputedStyle* oldStyle)
{
LayoutBlockFlow::styleDidChange(diff, oldStyle);
// column-rule is specified on the parent (the multicol container) of this object, but it's the
// column sets that are in charge of painting them. A column rule is pretty much like any other
// box decoration, like borders. We need to say that we have box decorations here, so that the
// columnn set is invalidated when it gets laid out. We cannot check here whether the multicol
// container actually has a visible column rule or not, because we may not have been inserted
// into the tree yet. Painting a column set is cheap anyway, because the only thing it can
// paint is the column rule, while actual multicol content is handled by the flow thread.
setHasBoxDecorationBackground(true);
}
