diff options
Diffstat (limited to 'chromium/third_party/WebKit/Source/core/rendering/line/BreakingContext.cpp')
-rw-r--r-- | chromium/third_party/WebKit/Source/core/rendering/line/BreakingContext.cpp | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/core/rendering/line/BreakingContext.cpp b/chromium/third_party/WebKit/Source/core/rendering/line/BreakingContext.cpp new file mode 100644 index 00000000000..513b2c3beaa --- /dev/null +++ b/chromium/third_party/WebKit/Source/core/rendering/line/BreakingContext.cpp @@ -0,0 +1,69 @@ +/* + * 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 "config.h" +#include "core/rendering/line/BreakingContextInlineHeaders.h" + +namespace WebCore { + +InlineIterator BreakingContext::handleEndOfLine() +{ + if (m_lineBreak == m_resolver.position() && (!m_lineBreak.object() || !m_lineBreak.object()->isBR())) { + // we just add as much as possible + if (m_blockStyle->whiteSpace() == PRE && !m_current.offset()) { + m_lineBreak.moveTo(m_lastObject, m_lastObject->isText() ? m_lastObject->length() : 0); + } else if (m_lineBreak.object()) { + // 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.object(), 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.object())); + } + + return m_lineBreak; +} + +} |