| /* |
| * Copyright (C) 2006 Apple Computer, Inc. |
| * Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/ |
| * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies) |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 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 |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef HitTestRequest_h |
| #define HitTestRequest_h |
| |
| #include "wtf/Allocator.h" |
| #include "wtf/Assertions.h" |
| |
| namespace blink { |
| |
| class HitTestRequest { |
| DISALLOW_NEW(); |
| |
| public: |
| enum RequestType { |
| ReadOnly = 1 << 1, |
| Active = 1 << 2, |
| Move = 1 << 3, |
| Release = 1 << 4, |
| IgnoreClipping = 1 << 5, |
| SVGClipContent = 1 << 6, |
| TouchEvent = 1 << 7, |
| AllowChildFrameContent = 1 << 8, |
| ChildFrameHitTest = 1 << 9, |
| IgnorePointerEventsNone = 1 << 10, |
| // Collect a list of nodes instead of just one. |
| // (This is for elementsFromPoint and rect-based tests). |
| ListBased = 1 << 11, |
| // When using list-based testing, this flag causes us to continue hit |
| // testing after a hit has been found. |
| PenetratingList = 1 << 12, |
| AvoidCache = 1 << 13, |
| }; |
| |
| typedef unsigned HitTestRequestType; |
| |
| HitTestRequest(HitTestRequestType requestType) : m_requestType(requestType) { |
| // Penetrating lists should also be list-based. |
| ASSERT(!(requestType & PenetratingList) || (requestType & ListBased)); |
| } |
| |
| bool readOnly() const { return m_requestType & ReadOnly; } |
| bool active() const { return m_requestType & Active; } |
| bool move() const { return m_requestType & Move; } |
| bool release() const { return m_requestType & Release; } |
| bool ignoreClipping() const { return m_requestType & IgnoreClipping; } |
| bool svgClipContent() const { return m_requestType & SVGClipContent; } |
| bool touchEvent() const { return m_requestType & TouchEvent; } |
| bool allowsChildFrameContent() const { |
| return m_requestType & AllowChildFrameContent; |
| } |
| bool isChildFrameHitTest() const { return m_requestType & ChildFrameHitTest; } |
| bool ignorePointerEventsNone() const { |
| return m_requestType & IgnorePointerEventsNone; |
| } |
| bool listBased() const { return m_requestType & ListBased; } |
| bool penetratingList() const { return m_requestType & PenetratingList; } |
| bool avoidCache() const { return m_requestType & AvoidCache; } |
| |
| // Convenience functions |
| bool touchMove() const { return move() && touchEvent(); } |
| |
| HitTestRequestType type() const { return m_requestType; } |
| |
| // The Cacheability bits don't affect hit testing computation. |
| // TODO(dtapuska): These bits really shouldn't be fields on the HitTestRequest |
| // as they don't influence the result; but rather are hints on the output as |
| // to what to do. Perhaps move these fields to another enum? |
| static const HitTestRequestType CacheabilityBits = |
| ReadOnly | Active | Move | Release | TouchEvent; |
| bool equalForCacheability(const HitTestRequest& value) const { |
| return (m_requestType | CacheabilityBits) == |
| (value.m_requestType | CacheabilityBits); |
| } |
| |
| private: |
| HitTestRequestType m_requestType; |
| }; |
| |
| } // namespace blink |
| |
| #endif // HitTestRequest_h |