| /* |
| * Copyright (C) 2011 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef HitTestingTransformState_h |
| #define HitTestingTransformState_h |
| |
| #include "base/memory/scoped_refptr.h" |
| #include "platform/geometry/FloatPoint.h" |
| #include "platform/geometry/FloatQuad.h" |
| #include "platform/geometry/IntSize.h" |
| #include "platform/transforms/AffineTransform.h" |
| #include "platform/transforms/TransformationMatrix.h" |
| #include "platform/wtf/RefCounted.h" |
| |
| namespace blink { |
| |
| // FIXME: Now that TransformState lazily creates its TransformationMatrix it |
| // takes up less space. |
| // So there's really no need for a ref counted version. So This class should be |
| // removed and replaced with TransformState. There are some minor differences |
| // (like the way translate() works slightly differently than move()) so care has |
| // to be taken when this is done. |
| class HitTestingTransformState : public RefCounted<HitTestingTransformState> { |
| public: |
| static scoped_refptr<HitTestingTransformState> Create(const FloatPoint& p, |
| const FloatQuad& quad, |
| const FloatQuad& area) { |
| return base::AdoptRef(new HitTestingTransformState(p, quad, area)); |
| } |
| |
| static scoped_refptr<HitTestingTransformState> Create( |
| const HitTestingTransformState& other) { |
| return base::AdoptRef(new HitTestingTransformState(other)); |
| } |
| |
| enum TransformAccumulation { kFlattenTransform, kAccumulateTransform }; |
| void Translate(int x, int y, TransformAccumulation); |
| void ApplyTransform(const TransformationMatrix& transform_from_container, |
| TransformAccumulation); |
| |
| FloatPoint MappedPoint() const; |
| FloatQuad MappedQuad() const; |
| FloatQuad MappedArea() const; |
| LayoutRect BoundsOfMappedArea() const; |
| void Flatten(); |
| |
| FloatPoint last_planar_point_; |
| FloatQuad last_planar_quad_; |
| FloatQuad last_planar_area_; |
| TransformationMatrix accumulated_transform_; |
| bool accumulating_transform_; |
| |
| private: |
| HitTestingTransformState(const FloatPoint& p, |
| const FloatQuad& quad, |
| const FloatQuad& area) |
| : last_planar_point_(p), |
| last_planar_quad_(quad), |
| last_planar_area_(area), |
| accumulating_transform_(false) {} |
| |
| HitTestingTransformState(const HitTestingTransformState& other) |
| : RefCounted<HitTestingTransformState>(), |
| last_planar_point_(other.last_planar_point_), |
| last_planar_quad_(other.last_planar_quad_), |
| last_planar_area_(other.last_planar_area_), |
| accumulated_transform_(other.accumulated_transform_), |
| accumulating_transform_(other.accumulating_transform_) {} |
| |
| void FlattenWithTransform(const TransformationMatrix&); |
| }; |
| |
| } // namespace blink |
| |
| #endif // HitTestingTransformState_h |