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/*
* Copyright (C) 2010 Apple Inc. 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 APPLE INC. ``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 APPLE INC. OR
* CONTRIBUTORS 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 "RenderIFrame.h"
#include "Frame.h"
#include "FrameView.h"
#include "HTMLIFrameElement.h"
#include "HTMLNames.h"
#include "Page.h"
#include "RenderView.h"
#include "Settings.h"
#include <wtf/StackStats.h>
namespace WebCore {
using namespace HTMLNames;
RenderIFrame::RenderIFrame(HTMLIFrameElement& element, Ref<RenderStyle>&& style)
: RenderFrameBase(element, WTFMove(style))
{
}
HTMLIFrameElement& RenderIFrame::iframeElement() const
{
return downcast<HTMLIFrameElement>(RenderFrameBase::frameOwnerElement());
}
bool RenderIFrame::shouldComputeSizeAsReplaced() const
{
return true;
}
bool RenderIFrame::isInlineBlockOrInlineTable() const
{
return isInline();
}
bool RenderIFrame::requiresLayer() const
{
return RenderFrameBase::requiresLayer() || style().resize() != RESIZE_NONE;
}
RenderView* RenderIFrame::contentRootRenderer() const
{
FrameView* childFrameView = childView();
return childFrameView ? childFrameView->frame().contentRenderer() : 0;
}
bool RenderIFrame::flattenFrame() const
{
Frame* frame = iframeElement().document().frame();
bool enabled = frame && frame->settings().frameFlatteningEnabled();
if (!enabled || !frame->page())
return false;
if (style().width().isFixed() && style().height().isFixed()) {
// Do not flatten iframes with scrolling="no".
if (iframeElement().scrollingMode() == ScrollbarAlwaysOff)
return false;
if (style().width().value() <= 0 || style().height().value() <= 0)
return false;
}
// Do not flatten offscreen inner frames during frame flattening, as flattening might make them visible.
IntRect boundingRect = absoluteBoundingBoxRectIgnoringTransforms();
return boundingRect.maxX() > 0 && boundingRect.maxY() > 0;
}
void RenderIFrame::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
ASSERT(needsLayout());
updateLogicalWidth();
// No kids to layout as a replaced element.
updateLogicalHeight();
if (flattenFrame())
layoutWithFlattening(style().width().isFixed(), style().height().isFixed());
clearOverflow();
addVisualEffectOverflow();
updateLayerTransform();
clearNeedsLayout();
}
}
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