void RenderRubyRun::getOverhang(bool firstLine, RenderObject* startRenderer, RenderObject* endRenderer, int& startOverhang, int& endOverhang) const { ASSERT(!needsLayout()); startOverhang = 0; endOverhang = 0; RenderRubyBase* rubyBase = this->rubyBase(); RenderRubyText* rubyText = this->rubyText(); if (!rubyBase || !rubyText) return; if (!rubyBase->firstRootBox()) return; int logicalWidth = this->logicalWidth(); int logicalLeftOverhang = numeric_limits<int>::max(); int logicalRightOverhang = numeric_limits<int>::max(); for (RootInlineBox* rootInlineBox = rubyBase->firstRootBox(); rootInlineBox; rootInlineBox = rootInlineBox->nextRootBox()) { logicalLeftOverhang = min<int>(logicalLeftOverhang, rootInlineBox->logicalLeft()); logicalRightOverhang = min<int>(logicalRightOverhang, logicalWidth - rootInlineBox->logicalRight()); } startOverhang = style()->isLeftToRightDirection() ? logicalLeftOverhang : logicalRightOverhang; endOverhang = style()->isLeftToRightDirection() ? logicalRightOverhang : logicalLeftOverhang; if (!startRenderer || !startRenderer->isText() || startRenderer->style(firstLine)->fontSize() > rubyBase->style(firstLine)->fontSize()) startOverhang = 0; if (!endRenderer || !endRenderer->isText() || endRenderer->style(firstLine)->fontSize() > rubyBase->style(firstLine)->fontSize()) endOverhang = 0; // We overhang a ruby only if the neighboring render object is a text. // We can overhang the ruby by no more than half the width of the neighboring text // and no more than half the font size. int halfWidthOfFontSize = rubyText->style(firstLine)->fontSize() / 2; if (startOverhang) startOverhang = min<int>(startOverhang, min<int>(toRenderText(startRenderer)->minLogicalWidth(), halfWidthOfFontSize)); if (endOverhang) endOverhang = min<int>(endOverhang, min<int>(toRenderText(endRenderer)->minLogicalWidth(), halfWidthOfFontSize)); }
void RenderRubyRun::getOverhang(bool firstLine, RenderObject* startRenderer, RenderObject* endRenderer, int& startOverhang, int& endOverhang) const { ASSERT(!needsLayout()); startOverhang = 0; endOverhang = 0; RenderRubyBase* rubyBase = this->rubyBase(); RenderRubyText* rubyText = this->rubyText(); if (!rubyBase || !rubyText) return; if (!rubyBase->firstRootBox()) return; int logicalWidth = this->logicalWidth(); // No more than half a ruby is allowed to overhang. int logicalLeftOverhang = rubyText->style(firstLine)->fontSize() / 2; int logicalRightOverhang = logicalLeftOverhang; for (RootInlineBox* rootInlineBox = rubyBase->firstRootBox(); rootInlineBox; rootInlineBox = rootInlineBox->nextRootBox()) { logicalLeftOverhang = min<int>(logicalLeftOverhang, rootInlineBox->logicalLeft()); logicalRightOverhang = min<int>(logicalRightOverhang, logicalWidth - rootInlineBox->logicalRight()); } startOverhang = style()->isLeftToRightDirection() ? logicalLeftOverhang : logicalRightOverhang; endOverhang = style()->isLeftToRightDirection() ? logicalRightOverhang : logicalLeftOverhang; if (!startRenderer || !startRenderer->isText() || startRenderer->style(firstLine)->fontSize() > rubyBase->style(firstLine)->fontSize()) startOverhang = 0; if (!endRenderer || !endRenderer->isText() || endRenderer->style(firstLine)->fontSize() > rubyBase->style(firstLine)->fontSize()) endOverhang = 0; }