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/*
* Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Publicw
* 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/LayoutSlider.h"
#include "core/InputTypeNames.h"
#include "core/dom/shadow/ShadowRoot.h"
#include "core/html/HTMLInputElement.h"
#include "core/html/shadow/ShadowElementNames.h"
#include "core/html/shadow/SliderThumbElement.h"
#include "core/layout/LayoutSliderThumb.h"
#include "wtf/MathExtras.h"
using namespace::std;
namespace blink {
const int LayoutSlider::defaultTrackLength = 129;
LayoutSlider::LayoutSlider(HTMLInputElement* element)
: LayoutFlexibleBox(element)
{
// We assume LayoutSlider works only with <input type=range>.
ASSERT(element->type() == InputTypeNames::range);
}
LayoutSlider::~LayoutSlider()
{
}
int LayoutSlider::baselinePosition(FontBaseline, bool /*firstLine*/, LineDirectionMode, LinePositionMode linePositionMode) const
{
ASSERT(linePositionMode == PositionOnContainingLine);
// FIXME: Patch this function for writing-mode.
return size().height() + marginTop();
}
void LayoutSlider::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const
{
maxLogicalWidth = LayoutUnit(defaultTrackLength * style()->effectiveZoom());
if (!style()->width().hasPercent())
minLogicalWidth = maxLogicalWidth;
}
inline SliderThumbElement* LayoutSlider::sliderThumbElement() const
{
return toSliderThumbElement(toElement(node())->userAgentShadowRoot()->getElementById(ShadowElementNames::sliderThumb()));
}
void LayoutSlider::layout()
{
// FIXME: Find a way to cascade appearance.
// http://webkit.org/b/62535
LayoutBox* thumbBox = sliderThumbElement()->layoutBox();
if (thumbBox && thumbBox->isSliderThumb())
toLayoutSliderThumb(thumbBox)->updateAppearance(styleRef());
LayoutFlexibleBox::layout();
}
bool LayoutSlider::inDragMode() const
{
return sliderThumbElement()->active();
}
} // namespace blink
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