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/**
* 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
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