/* * 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