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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
* Copyright (C) 2023 Apple Inc. All right 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 "config.h"
#include "RenderRubyBase.h"
#include "RenderBoxModelObjectInlines.h"
#include "RenderChildIterator.h"
#include "RenderRubyRun.h"
#include "RenderRubyText.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(RenderRubyBase);
RenderRubyBase::RenderRubyBase(Document& document, RenderStyle&& style)
: RenderBlockFlow(document, WTFMove(style))
, m_initialOffset(0)
, m_isAfterExpansion(true)
{
setInline(false);
}
RenderRubyBase::~RenderRubyBase() = default;
bool RenderRubyBase::isChildAllowed(const RenderObject& child, const RenderStyle&) const
{
return child.isInline();
}
RenderRubyRun* RenderRubyBase::rubyRun() const
{
ASSERT(parent());
return downcast<RenderRubyRun>(parent());
}
std::optional<TextAlignMode> RenderRubyBase::overrideTextAlignmentForLine(bool /* endsWithSoftBreak */) const
{
return TextAlignMode::Justify;
}
void RenderRubyBase::adjustInlineDirectionLineBounds(int expansionOpportunityCount, float& logicalLeft, float& logicalWidth) const
{
if (rubyRun()->hasOverridingLogicalWidth() && firstRootBox() && !firstRootBox()->nextRootBox()) {
logicalLeft += m_initialOffset;
logicalWidth -= 2 * m_initialOffset;
return;
}
LayoutUnit maxPreferredLogicalWidth = rubyRun() && rubyRun()->hasOverridingLogicalWidth() ? rubyRun()->overridingLogicalWidth() : this->maxPreferredLogicalWidth();
if (maxPreferredLogicalWidth >= logicalWidth)
return;
// Inset the ruby base by half the inter-ideograph expansion amount.
float inset = (logicalWidth - maxPreferredLogicalWidth) / (expansionOpportunityCount + 1);
logicalLeft += inset / 2;
logicalWidth -= inset;
}
void RenderRubyBase::cachePriorCharactersIfNeeded(const CachedLineBreakIteratorFactory& lineBreakIteratorFactory)
{
auto* run = rubyRun();
if (run)
run->setCachedPriorCharacters(lineBreakIteratorFactory.priorContext().lastCharacter(), lineBreakIteratorFactory.priorContext().secondToLastCharacter());
}
bool RenderRubyBase::isEmptyOrHasInFlowContent() const
{
auto* firstChild = this->firstChild();
if (!firstChild || !is<RenderElement>(*firstChild))
return true;
if (firstChild->isOutOfFlowPositioned())
return false;
for (auto& child : childrenOfType<RenderObject>(*downcast<RenderElement>(firstChild))) {
if (!child.isOutOfFlowPositioned())
return true;
}
return false;
}
} // namespace WebCore
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