/** | |
* Copyright (C) 2000 Lars Knoll (knoll@kde.org) | |
* Copyright (C) 2006 Apple Computer, Inc. | |
* | |
* 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 "RenderBR.h" | |
#include "Document.h" | |
#include "InlineTextBox.h" | |
#include "VisiblePosition.h" | |
namespace WebCore { | |
RenderBR::RenderBR(Node* node) | |
: RenderText(node, StringImpl::create("\n")) | |
, m_lineHeight(-1) | |
{ | |
} | |
RenderBR::~RenderBR() | |
{ | |
} | |
int RenderBR::baselinePosition(bool firstLine, bool isRootLineBox) const | |
{ | |
if (firstTextBox() && !firstTextBox()->isText()) | |
return 0; | |
return RenderText::baselinePosition(firstLine, isRootLineBox); | |
} | |
int RenderBR::lineHeight(bool firstLine, bool /*isRootLineBox*/) const | |
{ | |
if (firstTextBox() && !firstTextBox()->isText()) | |
return 0; | |
if (firstLine) { | |
RenderStyle* s = style(firstLine); | |
Length lh = s->lineHeight(); | |
if (lh.isNegative()) { | |
if (s == style()) { | |
if (m_lineHeight == -1) | |
m_lineHeight = RenderObject::lineHeight(false); | |
return m_lineHeight; | |
} | |
return s->font().lineSpacing(); | |
} | |
if (lh.isPercent()) | |
return lh.calcMinValue(s->fontSize()); | |
return lh.value(); | |
} | |
if (m_lineHeight == -1) | |
m_lineHeight = RenderObject::lineHeight(false); | |
return m_lineHeight; | |
} | |
void RenderBR::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) | |
{ | |
RenderText::styleDidChange(diff, oldStyle); | |
m_lineHeight = -1; | |
} | |
int RenderBR::caretMinOffset() const | |
{ | |
return 0; | |
} | |
int RenderBR::caretMaxOffset() const | |
{ | |
return 1; | |
} | |
unsigned RenderBR::caretMaxRenderedOffset() const | |
{ | |
return 1; | |
} | |
VisiblePosition RenderBR::positionForPoint(const IntPoint&) | |
{ | |
return createVisiblePosition(0, DOWNSTREAM); | |
} | |
} // namespace WebCore |