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/*
* Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
*
* Portions are Copyright (C) 1998 Netscape Communications Corporation.
*
* Other contributors:
* Robert O'Callahan <roc+@cs.cmu.edu>
* David Baron <dbaron@fas.harvard.edu>
* Christian Biesinger <cbiesinger@web.de>
* Randall Jesup <rjesup@wgate.com>
* Roland Mainz <roland.mainz@informatik.med.uni-giessen.de>
* Josh Soref <timeless@mac.com>
* Boris Zbarsky <bzbarsky@mit.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Alternatively, the contents of this file may be used under the terms
* of either the Mozilla Public License Version 1.1, found at
* http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
* License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
* (the "GPL"), in which case the provisions of the MPL or the GPL are
* applicable instead of those above. If you wish to allow use of your
* version of this file only under the terms of one of those two
* licenses (the MPL or the GPL) and not to allow others to use your
* version of this file under the LGPL, indicate your decision by
* deletingthe provisions above and replace them with the notice and
* other provisions required by the MPL or the GPL, as the case may be.
* If you do not delete the provisions above, a recipient may use your
* version of this file under any of the LGPL, the MPL or the GPL.
*/
#include "config.h"
#include "core/rendering/RenderLayerReflectionInfo.h"
#include "core/frame/UseCounter.h"
#include "core/paint/LayerPainter.h"
#include "core/rendering/RenderLayer.h"
#include "core/rendering/RenderReplica.h"
#include "core/rendering/style/RenderStyle.h"
#include "platform/transforms/ScaleTransformOperation.h"
#include "platform/transforms/TranslateTransformOperation.h"
#include "wtf/RefPtr.h"
namespace blink {
RenderLayerReflectionInfo::RenderLayerReflectionInfo(RenderBox& renderer)
: m_box(renderer)
, m_isPaintingInsideReflection(false)
{
UseCounter::count(box().document(), UseCounter::Reflection);
m_reflection = RenderReplica::createAnonymous(&box().document());
m_reflection->setParent(m_box); // We create a 1-way connection.
}
void RenderLayerReflectionInfo::destroy()
{
if (!m_reflection->documentBeingDestroyed())
m_reflection->removeLayers(box().layer());
m_reflection->setParent(0);
m_reflection->destroy();
m_reflection = nullptr;
}
void RenderLayerReflectionInfo::trace(Visitor* visitor)
{
visitor->trace(m_box);
visitor->trace(m_reflection);
}
RenderLayer* RenderLayerReflectionInfo::reflectionLayer() const
{
return m_reflection->layer();
}
void RenderLayerReflectionInfo::updateAfterStyleChange(const RenderStyle* oldStyle)
{
RefPtr<RenderStyle> newStyle = RenderStyle::create();
newStyle->inheritFrom(box().style());
// Map in our transform.
TransformOperations transform;
switch (box().style()->boxReflect()->direction()) {
case ReflectionBelow:
transform.operations().append(TranslateTransformOperation::create(Length(0, Fixed),
Length(100., Percent), TransformOperation::Translate));
transform.operations().append(TranslateTransformOperation::create(Length(0, Fixed),
box().style()->boxReflect()->offset(), TransformOperation::Translate));
transform.operations().append(ScaleTransformOperation::create(1.0, -1.0, ScaleTransformOperation::Scale));
break;
case ReflectionAbove:
transform.operations().append(ScaleTransformOperation::create(1.0, -1.0, ScaleTransformOperation::Scale));
transform.operations().append(TranslateTransformOperation::create(Length(0, Fixed),
Length(100., Percent), TransformOperation::Translate));
transform.operations().append(TranslateTransformOperation::create(Length(0, Fixed),
box().style()->boxReflect()->offset(), TransformOperation::Translate));
break;
case ReflectionRight:
transform.operations().append(TranslateTransformOperation::create(Length(100., Percent),
Length(0, Fixed), TransformOperation::Translate));
transform.operations().append(TranslateTransformOperation::create(
box().style()->boxReflect()->offset(), Length(0, Fixed), TransformOperation::Translate));
transform.operations().append(ScaleTransformOperation::create(-1.0, 1.0, ScaleTransformOperation::Scale));
break;
case ReflectionLeft:
transform.operations().append(ScaleTransformOperation::create(-1.0, 1.0, ScaleTransformOperation::Scale));
transform.operations().append(TranslateTransformOperation::create(Length(100., Percent),
Length(0, Fixed), TransformOperation::Translate));
transform.operations().append(TranslateTransformOperation::create(
box().style()->boxReflect()->offset(), Length(0, Fixed), TransformOperation::Translate));
break;
}
newStyle->setTransform(transform);
// Map in our mask.
newStyle->setMaskBoxImage(box().style()->boxReflect()->mask());
m_reflection->setStyle(newStyle.release());
}
void RenderLayerReflectionInfo::paint(GraphicsContext* context, const LayerPaintingInfo& paintingInfo, PaintLayerFlags flags)
{
if (m_isPaintingInsideReflection)
return;
// Mark that we are now inside replica painting.
m_isPaintingInsideReflection = true;
LayerPainter(*reflectionLayer()).paintLayer(context, paintingInfo, flags);
m_isPaintingInsideReflection = false;
}
} // namespace blink
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