| /* |
| * Copyright (C) 2009 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 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 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. |
| */ |
| |
| #pragma once |
| |
| #include "Length.h" |
| #include "LengthFunctions.h" |
| #include "TransformOperation.h" |
| #include <wtf/Ref.h> |
| |
| namespace WebCore { |
| |
| class PerspectiveTransformOperation final : public TransformOperation { |
| public: |
| static Ref<PerspectiveTransformOperation> create(const Length& p) |
| { |
| return adoptRef(*new PerspectiveTransformOperation(p)); |
| } |
| |
| Ref<TransformOperation> clone() const override |
| { |
| return adoptRef(*new PerspectiveTransformOperation(m_p)); |
| } |
| |
| Length perspective() const { return m_p; } |
| |
| private: |
| bool isIdentity() const override { return !floatValueForLength(m_p, 1); } |
| bool isAffectedByTransformOrigin() const override { return !isIdentity(); } |
| bool isRepresentableIn2D() const final { return false; } |
| |
| bool operator==(const TransformOperation&) const override; |
| |
| bool apply(TransformationMatrix& transform, const FloatSize&) const override |
| { |
| transform.applyPerspective(floatValueForLength(m_p, 1)); |
| return false; |
| } |
| |
| Ref<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false) override; |
| |
| void dump(WTF::TextStream&) const final; |
| |
| PerspectiveTransformOperation(const Length& p) |
| : TransformOperation(PERSPECTIVE) |
| , m_p(p) |
| { |
| ASSERT(p.isFixed()); |
| } |
| |
| Length m_p; |
| }; |
| |
| } // namespace WebCore |
| |
| SPECIALIZE_TYPE_TRAITS_TRANSFORMOPERATION(WebCore::PerspectiveTransformOperation, type() == WebCore::TransformOperation::PERSPECTIVE) |