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/*
* Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
* Copyright (C) 2013 Intel Corporation. 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.
*/
#ifndef RenderLayerBlendInfo_h
#define RenderLayerBlendInfo_h
#include "public/platform/WebBlendMode.h"
#include "wtf/Assertions.h"
#include "wtf/Noncopyable.h"
namespace WebCore {
class RenderLayerModelObject;
class RenderLayerBlendInfo {
WTF_MAKE_NONCOPYABLE(RenderLayerBlendInfo);
public:
explicit RenderLayerBlendInfo(RenderLayerModelObject&);
bool hasBlendMode() const;
void updateBlendMode();
bool childLayerHasBlendMode() const
{
ASSERT(!m_childLayerHasBlendModeStatusDirty);
return m_childLayerHasBlendMode;
}
bool childLayerHasBlendModeWhileDirty() const { return m_childLayerHasBlendMode; }
void setChildLayerHasBlendMode(bool b) { m_childLayerHasBlendMode = b; }
bool childLayerHasBlendModeStatusDirty() const { return m_childLayerHasBlendModeStatusDirty; }
void setChildLayerHasBlendModeStatusDirty(bool b) { m_childLayerHasBlendModeStatusDirty = b; }
void setAncestorChainBlendedDescendant();
void dirtyAncestorChainBlendedDescendantStatus();
blink::WebBlendMode blendMode() const { return m_blendMode; }
private:
RenderLayerModelObject& m_renderer;
blink::WebBlendMode m_blendMode;
unsigned m_childLayerHasBlendMode : 1;
unsigned m_childLayerHasBlendModeStatusDirty : 1;
};
} // namespace WebCore
#endif // RenderLayerBlendInfo_h
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