| /* |
| * 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_); |
| } |
| |
| PhysicalRect HitTestingTransformState::BoundsOfMappedQuad() const { |
| return PhysicalRectToBeNoop( |
| accumulated_transform_.Inverse().ClampedBoundsOfProjectedQuad( |
| last_planar_quad_)); |
| } |
| |
| PhysicalRect HitTestingTransformState::BoundsOfMappedArea() const { |
| return PhysicalRectToBeNoop( |
| accumulated_transform_.Inverse().ClampedBoundsOfProjectedQuad( |
| last_planar_area_)); |
| } |
| |
| } // namespace blink |