/*
* Copyright (C) 2012 Google 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. AND ITS CONTRIBUTORS ``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 ITS 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 WebTransformOperations_h
#define WebTransformOperations_h
class SkMatrix44;
#define WEB_TRANSFORM_OPERATIONS_IS_VIRTUAL 1
namespace blink {
class WebTransformOperations {
public:
virtual ~WebTransformOperations() { }
// Returns true if these operations can be blended. It will only return
// false if we must resort to matrix interpolation, and matrix interpolation
// fails (this can happen if either matrix cannot be decomposed).
virtual bool canBlendWith(const WebTransformOperations& other) const = 0;
virtual void appendTranslate(double x, double y, double z) = 0;
virtual void appendRotate(double x, double y, double z, double degrees) = 0;
virtual void appendScale(double x, double y, double z) = 0;
virtual void appendSkew(double x, double y) = 0;
virtual void appendPerspective(double depth) = 0;
virtual void appendMatrix(const SkMatrix44&) = 0;
virtual void appendIdentity() = 0;
virtual bool isIdentity() const = 0;
};
} // namespace blink
#endif // WebTransformOperations_h