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/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.
* All right reserved.
* Copyright (C) 2010 Google Inc. All rights reserved.
* Copyright (C) 2013 Adobe Systems Incorporated.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "core/layout/line/BreakingContextInlineHeaders.h"
namespace blink {
InlineIterator BreakingContext::handleEndOfLine() {
if (m_lineBreak == m_resolver.position() &&
(!m_lineBreak.getLineLayoutItem() ||
!m_lineBreak.getLineLayoutItem().isBR())) {
// we just add as much as possible
if (m_blockStyle->whiteSpace() == EWhiteSpace::kPre &&
!m_current.offset()) {
m_lineBreak.moveTo(m_lastObject,
m_lastObject.isText() ? m_lastObject.length() : 0);
} else if (m_lineBreak.getLineLayoutItem()) {
// Don't ever break in the middle of a word if we can help it.
// There's no room at all. We just have to be on this line,
// even though we'll spill out.
m_lineBreak.moveTo(m_current.getLineLayoutItem(), m_current.offset());
}
}
// FIXME Bug 100049: We do not need to consume input in a multi-segment line
// unless no segment will.
if (m_lineBreak == m_resolver.position())
m_lineBreak.increment();
// Sanity check our midpoints.
m_lineMidpointState.checkMidpoints(m_lineBreak);
m_trailingObjects.updateMidpointsForTrailingObjects(
m_lineMidpointState, m_lineBreak, TrailingObjects::CollapseFirstSpace);
// We might have made lineBreak an iterator that points past the end
// of the object. Do this adjustment to make it point to the start
// of the next object instead to avoid confusing the rest of the
// code.
if (m_lineBreak.offset()) {
// This loop enforces the invariant that line breaks should never point
// at an empty inline. See http://crbug.com/305904.
do {
m_lineBreak.setOffset(m_lineBreak.offset() - 1);
m_lineBreak.increment();
} while (!m_lineBreak.atEnd() &&
isEmptyInline(m_lineBreak.getLineLayoutItem()));
}
return m_lineBreak;
}
} // namespace blink
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