| /* |
| * Copyright (C) 2009 Google Inc. All rights reserved. |
| * Copyright (C) 2011 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "core/layout/LayoutRubyText.h" |
| |
| namespace blink { |
| |
| LayoutRubyText::LayoutRubyText(Element* element) : LayoutBlockFlow(element) {} |
| |
| LayoutRubyText::~LayoutRubyText() {} |
| |
| bool LayoutRubyText::isChildAllowed(LayoutObject* child, |
| const ComputedStyle&) const { |
| return child->isInline(); |
| } |
| |
| ETextAlign LayoutRubyText::textAlignmentForLine(bool endsWithSoftBreak) const { |
| ETextAlign textAlign = style()->textAlign(); |
| // FIXME: This check is bogus since user can set the initial value. |
| if (textAlign != ComputedStyle::initialTextAlign()) |
| return LayoutBlockFlow::textAlignmentForLine(endsWithSoftBreak); |
| |
| // The default behavior is to allow ruby text to expand if it is shorter than |
| // the ruby base. |
| return ETextAlign::kJustify; |
| } |
| |
| void LayoutRubyText::adjustInlineDirectionLineBounds( |
| unsigned expansionOpportunityCount, |
| LayoutUnit& logicalLeft, |
| LayoutUnit& logicalWidth) const { |
| ETextAlign textAlign = style()->textAlign(); |
| // FIXME: This check is bogus since user can set the initial value. |
| if (textAlign != ComputedStyle::initialTextAlign()) |
| return LayoutBlockFlow::adjustInlineDirectionLineBounds( |
| expansionOpportunityCount, logicalLeft, logicalWidth); |
| |
| int maxPreferredLogicalWidth = this->maxPreferredLogicalWidth().toInt(); |
| if (maxPreferredLogicalWidth >= logicalWidth) |
| return; |
| |
| // Inset the ruby text by half the inter-ideograph expansion amount, but no |
| // more than a full-width ruby character on each side. |
| LayoutUnit inset = (logicalWidth - maxPreferredLogicalWidth) / |
| (expansionOpportunityCount + 1); |
| if (expansionOpportunityCount) |
| inset = std::min(LayoutUnit(2 * style()->fontSize()), inset); |
| |
| logicalLeft += inset / 2; |
| logicalWidth -= inset; |
| } |
| |
| bool LayoutRubyText::avoidsFloats() const { |
| return true; |
| } |
| |
| } // namespace blink |