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/*
* 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 THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_HIT_TESTING_TRANSFORM_STATE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_HIT_TESTING_TRANSFORM_STATE_H_
#include "third_party/blink/renderer/platform/geometry/float_point.h"
#include "third_party/blink/renderer/platform/geometry/float_quad.h"
#include "third_party/blink/renderer/platform/geometry/int_size.h"
#include "third_party/blink/renderer/platform/transforms/affine_transform.h"
#include "third_party/blink/renderer/platform/transforms/transformation_matrix.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:
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)
: 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_) {}
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:
void FlattenWithTransform(const TransformationMatrix&);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_HIT_TESTING_TRANSFORM_STATE_H_