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/*
* 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 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_PLATFORM_TRANSFORMS_PERSPECTIVE_TRANSFORM_OPERATION_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_TRANSFORMS_PERSPECTIVE_TRANSFORM_OPERATION_H_
#include "third_party/blink/renderer/platform/transforms/transform_operation.h"
namespace blink {
class PLATFORM_EXPORT PerspectiveTransformOperation final
: public TransformOperation {
public:
static scoped_refptr<PerspectiveTransformOperation> Create(double p) {
return base::AdoptRef(new PerspectiveTransformOperation(p));
}
double Perspective() const { return p_; }
bool CanBlendWith(const TransformOperation& other) const override {
return IsSameType(other);
}
static bool IsMatchingOperationType(OperationType type) {
return type == kPerspective;
}
private:
OperationType GetType() const override { return kPerspective; }
bool operator==(const TransformOperation& o) const override {
if (!IsSameType(o))
return false;
const PerspectiveTransformOperation* p =
static_cast<const PerspectiveTransformOperation*>(&o);
return p_ == p->p_;
}
void Apply(TransformationMatrix& transform, const FloatSize&) const override {
transform.ApplyPerspective(p_);
}
scoped_refptr<TransformOperation> Accumulate(
const TransformOperation& other) override;
scoped_refptr<TransformOperation> Blend(
const TransformOperation* from,
double progress,
bool blend_to_identity = false) override;
scoped_refptr<TransformOperation> Zoom(double factor) final;
// Perspective does not, by itself, specify a 3D transform.
bool HasNonTrivial3DComponent() const override { return false; }
PerspectiveTransformOperation(double p) : p_(p) {}
double p_;
};
DEFINE_TRANSFORM_TYPE_CASTS(PerspectiveTransformOperation);
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_TRANSFORMS_PERSPECTIVE_TRANSFORM_OPERATION_H_
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