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/*
* Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "config.h"
#include "core/rendering/RenderNamedFlowFragment.h"
#include "core/rendering/FlowThreadController.h"
#include "core/rendering/RenderBoxRegionInfo.h"
#include "core/rendering/RenderFlowThread.h"
#include "core/rendering/RenderNamedFlowThread.h"
#include "core/rendering/RenderView.h"
using namespace std;
namespace WebCore {
RenderNamedFlowFragment::RenderNamedFlowFragment()
: RenderRegion(0, 0)
{
}
RenderNamedFlowFragment::~RenderNamedFlowFragment()
{
}
RenderNamedFlowFragment* RenderNamedFlowFragment::createAnonymous(Document* document)
{
RenderNamedFlowFragment* region = new RenderNamedFlowFragment();
region->setDocumentForAnonymous(document);
return region;
}
void RenderNamedFlowFragment::setStyleForNamedFlowFragment(const RenderStyle* parentStyle)
{
RefPtr<RenderStyle> newStyle = RenderStyle::createAnonymousStyleWithDisplay(parentStyle, BLOCK);
newStyle->setFlowThread(parentStyle->flowThread());
newStyle->setRegionThread(parentStyle->regionThread());
newStyle->setRegionFragment(parentStyle->regionFragment());
newStyle->setShapeInside(parentStyle->shapeInside());
newStyle->setOverflowX(parentStyle->overflowX());
newStyle->setOverflowY(parentStyle->overflowY());
setStyle(newStyle.release());
}
void RenderNamedFlowFragment::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderRegion::styleDidChange(diff, oldStyle);
if (parent() && parent()->needsLayout())
setNeedsLayout();
}
// FIXME: flex items as regions with flex-basis: 0 inside a flex container
// with flex-direction: column should not be treated as auto-height regions
bool RenderNamedFlowFragment::shouldHaveAutoLogicalHeight() const
{
ASSERT(parent());
RenderStyle* styleToUse = parent()->style();
bool hasSpecifiedEndpointsForHeight = styleToUse->logicalTop().isSpecified() && styleToUse->logicalBottom().isSpecified();
bool hasAnchoredEndpointsForHeight = isOutOfFlowPositioned() && hasSpecifiedEndpointsForHeight;
bool hasAutoHeightStyle = styleToUse->logicalHeight().isAuto()
|| styleToUse->logicalHeight().isFitContent()
|| styleToUse->logicalHeight().isMaxContent()
|| styleToUse->logicalHeight().isMinContent();
return hasAutoHeightStyle && !hasAnchoredEndpointsForHeight;
}
LayoutUnit RenderNamedFlowFragment::maxPageLogicalHeight() const
{
ASSERT(m_flowThread);
ASSERT(hasAutoLogicalHeight() && !m_flowThread->inConstrainedLayoutPhase());
ASSERT(isAnonymous());
ASSERT(parent());
RenderStyle* styleToUse = parent()->style();
return styleToUse->logicalMaxHeight().isUndefined() ? RenderFlowThread::maxLogicalHeight() : toRenderBlock(parent())->computeReplacedLogicalHeightUsing(styleToUse->logicalMaxHeight());
}
}
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