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1 /* | |
2 * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved. | |
3 * Copyright (C) 2013 Intel Corporation. All rights reserved. | |
4 * | |
5 * Portions are Copyright (C) 1998 Netscape Communications Corporation. | |
6 * | |
7 * Other contributors: | |
8 * Robert O'Callahan <roc+@cs.cmu.edu> | |
9 * David Baron <dbaron@fas.harvard.edu> | |
10 * Christian Biesinger <cbiesinger@web.de> | |
11 * Randall Jesup <rjesup@wgate.com> | |
12 * Roland Mainz <roland.mainz@informatik.med.uni-giessen.de> | |
13 * Josh Soref <timeless@mac.com> | |
14 * Boris Zbarsky <bzbarsky@mit.edu> | |
15 * | |
16 * This library is free software; you can redistribute it and/or | |
17 * modify it under the terms of the GNU Lesser General Public | |
18 * License as published by the Free Software Foundation; either | |
19 * version 2.1 of the License, or (at your option) any later version. | |
20 * | |
21 * This library is distributed in the hope that it will be useful, | |
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
24 * Lesser General Public License for more details. | |
25 * | |
26 * You should have received a copy of the GNU Lesser General Public | |
27 * License along with this library; if not, write to the Free Software | |
28 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 US
A | |
29 * | |
30 * Alternatively, the contents of this file may be used under the terms | |
31 * of either the Mozilla Public License Version 1.1, found at | |
32 * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public | |
33 * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html | |
34 * (the "GPL"), in which case the provisions of the MPL or the GPL are | |
35 * applicable instead of those above. If you wish to allow use of your | |
36 * version of this file only under the terms of one of those two | |
37 * licenses (the MPL or the GPL) and not to allow others to use your | |
38 * version of this file under the LGPL, indicate your decision by | |
39 * deletingthe provisions above and replace them with the notice and | |
40 * other provisions required by the MPL or the GPL, as the case may be. | |
41 * If you do not delete the provisions above, a recipient may use your | |
42 * version of this file under any of the LGPL, the MPL or the GPL. | |
43 */ | |
44 | |
45 #ifndef RenderLayerBlendInfo_h | |
46 #define RenderLayerBlendInfo_h | |
47 | |
48 #include "public/platform/WebBlendMode.h" | |
49 #include "wtf/Assertions.h" | |
50 #include "wtf/Noncopyable.h" | |
51 | |
52 namespace blink { | |
53 | |
54 class RenderLayerModelObject; | |
55 | |
56 class RenderLayerBlendInfo { | |
57 WTF_MAKE_NONCOPYABLE(RenderLayerBlendInfo); | |
58 public: | |
59 explicit RenderLayerBlendInfo(RenderLayerModelObject&); | |
60 | |
61 bool hasBlendMode() const; | |
62 void updateBlendMode(); | |
63 | |
64 bool childLayerHasBlendMode() const | |
65 { | |
66 ASSERT(!m_childLayerHasBlendModeStatusDirty); | |
67 return m_childLayerHasBlendMode; | |
68 } | |
69 bool childLayerHasBlendModeWhileDirty() const { return m_childLayerHasBlendM
ode; } | |
70 | |
71 void setChildLayerHasBlendMode(bool b) { m_childLayerHasBlendMode = b; } | |
72 | |
73 bool childLayerHasBlendModeStatusDirty() const { return m_childLayerHasBlend
ModeStatusDirty; } | |
74 void setChildLayerHasBlendModeStatusDirty(bool b) { m_childLayerHasBlendMode
StatusDirty = b; } | |
75 | |
76 void setAncestorChainBlendedDescendant(); | |
77 void dirtyAncestorChainBlendedDescendantStatus(); | |
78 | |
79 blink::WebBlendMode blendMode() const { return m_blendMode; } | |
80 | |
81 private: | |
82 RenderLayerModelObject& m_renderer; | |
83 blink::WebBlendMode m_blendMode; | |
84 | |
85 unsigned m_childLayerHasBlendMode : 1; | |
86 unsigned m_childLayerHasBlendModeStatusDirty : 1; | |
87 }; | |
88 | |
89 } // namespace blink | |
90 | |
91 #endif // RenderLayerBlendInfo_h | |
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