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34 #include "core/rendering/RenderRubyText.h"
38 RenderRubyText::RenderRubyText(Element* element)
39 : RenderBlockFlow(element)
43 RenderRubyText::~RenderRubyText()
47 bool RenderRubyText::isChildAllowed(RenderObject* child, RenderStyle*) const
49 return child->isInline();
52 ETextAlign RenderRubyText::textAlignmentForLine(bool endsWithSoftBreak) const
54 ETextAlign textAlign = style()->textAlign();
55 // FIXME: This check is bogus since user can set the initial value.
56 if (textAlign != RenderStyle::initialTextAlign())
57 return RenderBlockFlow::textAlignmentForLine(endsWithSoftBreak);
59 // The default behavior is to allow ruby text to expand if it is shorter than the ruby base.
63 void RenderRubyText::adjustInlineDirectionLineBounds(unsigned expansionOpportunityCount, float& logicalLeft, float& logicalWidth) const
65 ETextAlign textAlign = style()->textAlign();
66 // FIXME: This check is bogus since user can set the initial value.
67 if (textAlign != RenderStyle::initialTextAlign())
68 return RenderBlockFlow::adjustInlineDirectionLineBounds(expansionOpportunityCount, logicalLeft, logicalWidth);
70 int maxPreferredLogicalWidth = this->maxPreferredLogicalWidth();
71 if (maxPreferredLogicalWidth >= logicalWidth)
74 // Inset the ruby text by half the inter-ideograph expansion amount, but no more than a full-width
75 // ruby character on each side.
76 float inset = (logicalWidth - maxPreferredLogicalWidth) / (expansionOpportunityCount + 1);
77 if (expansionOpportunityCount)
78 inset = std::min<float>(2 * style()->fontSize(), inset);
80 logicalLeft += inset / 2;
81 logicalWidth -= inset;
84 bool RenderRubyText::avoidsFloats() const