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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.
*/
#include "third_party/blink/renderer/core/layout/hit_testing_transform_state.h"
#include "third_party/blink/renderer/platform/geometry/layout_rect.h"
namespace blink {
void HitTestingTransformState::Translate(int x,
int y,
TransformAccumulation accumulate) {
accumulated_transform_.Translate(x, y);
if (accumulate == kFlattenTransform)
FlattenWithTransform(accumulated_transform_);
accumulating_transform_ = accumulate == kAccumulateTransform;
}
void HitTestingTransformState::ApplyTransform(
const TransformationMatrix& transform_from_container,
TransformAccumulation accumulate) {
accumulated_transform_.Multiply(transform_from_container);
if (accumulate == kFlattenTransform)
FlattenWithTransform(accumulated_transform_);
accumulating_transform_ = accumulate == kAccumulateTransform;
}
void HitTestingTransformState::Flatten() {
FlattenWithTransform(accumulated_transform_);
}
void HitTestingTransformState::FlattenWithTransform(
const TransformationMatrix& t) {
TransformationMatrix inverse_transform = t.Inverse();
last_planar_point_ = inverse_transform.ProjectPoint(last_planar_point_);
last_planar_quad_ = inverse_transform.ProjectQuad(last_planar_quad_);
last_planar_area_ = inverse_transform.ProjectQuad(last_planar_area_);
accumulated_transform_.MakeIdentity();
accumulating_transform_ = false;
}
FloatPoint HitTestingTransformState::MappedPoint() const {
return accumulated_transform_.Inverse().ProjectPoint(last_planar_point_);
}
FloatQuad HitTestingTransformState::MappedQuad() const {
return accumulated_transform_.Inverse().ProjectQuad(last_planar_quad_);
}
FloatQuad HitTestingTransformState::MappedArea() const {
return accumulated_transform_.Inverse().ProjectQuad(last_planar_area_);
}
LayoutRect HitTestingTransformState::BoundsOfMappedArea() const {
return accumulated_transform_.Inverse().ClampedBoundsOfProjectedQuad(
last_planar_area_);
}
} // namespace blink