#include "config.h"
#include "RenderSlider.h"
#include "CSSPropertyNames.h"
#include "Document.h"
#include "Event.h"
#include "EventHandler.h"
#include "EventNames.h"
#include "Frame.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "HTMLParserIdioms.h"
#include "MediaControlElements.h"
#include "MouseEvent.h"
#include "Node.h"
#include "RenderLayer.h"
#include "RenderTheme.h"
#include "RenderView.h"
#include "ShadowRoot.h"
#include "SliderThumbElement.h"
#include "StepRange.h"
#include "StyleResolver.h"
#include <wtf/MathExtras.h>
using std::min;
namespace WebCore {
static const int defaultTrackLength = 129;
RenderSlider::RenderSlider(HTMLInputElement* element)
: RenderBlock(element)
{
ASSERT(element->isRangeControl());
}
RenderSlider::~RenderSlider()
{
}
LayoutUnit RenderSlider::baselinePosition(FontBaseline, bool , LineDirectionMode, LinePositionMode) const
{
return height() + marginTop();
}
void RenderSlider::computePreferredLogicalWidths()
{
m_minPreferredLogicalWidth = 0;
m_maxPreferredLogicalWidth = 0;
if (style()->width().isFixed() && style()->width().value() > 0)
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = computeContentBoxLogicalWidth(style()->width().value());
else
m_maxPreferredLogicalWidth = defaultTrackLength * style()->effectiveZoom();
if (style()->minWidth().isFixed() && style()->minWidth().value() > 0) {
m_maxPreferredLogicalWidth = max(m_maxPreferredLogicalWidth, computeContentBoxLogicalWidth(style()->minWidth().value()));
m_minPreferredLogicalWidth = max(m_minPreferredLogicalWidth, computeContentBoxLogicalWidth(style()->minWidth().value()));
} else if (style()->width().isPercent() || (style()->width().isAuto() && style()->height().isPercent()))
m_minPreferredLogicalWidth = 0;
else
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth;
if (style()->maxWidth().isFixed()) {
m_maxPreferredLogicalWidth = min(m_maxPreferredLogicalWidth, computeContentBoxLogicalWidth(style()->maxWidth().value()));
m_minPreferredLogicalWidth = min(m_minPreferredLogicalWidth, computeContentBoxLogicalWidth(style()->maxWidth().value()));
}
LayoutUnit toAdd = borderAndPaddingWidth();
m_minPreferredLogicalWidth += toAdd;
m_maxPreferredLogicalWidth += toAdd;
setPreferredLogicalWidthsDirty(false);
}
void RenderSlider::layout()
{
RenderBox* thumbBox = sliderThumbElementOf(node())->renderBox();
if (thumbBox && thumbBox->isSliderThumb())
static_cast<RenderSliderThumb*>(thumbBox)->updateAppearance(style());
if (RenderObject* limiterRenderer = trackLimiterElementOf(node())->renderer()) {
if (limiterRenderer->isSliderThumb())
static_cast<RenderSliderThumb*>(limiterRenderer)->updateAppearance(style());
}
RenderBlock::layout();
if (!thumbBox)
return;
LayoutUnit heightDiff = thumbBox->height() - contentHeight();
if (heightDiff > 0)
thumbBox->setY(thumbBox->y() - (heightDiff / 2));
}
bool RenderSlider::inDragMode() const
{
return sliderThumbElementOf(node())->active();
}
}