SkSGTransformPriv.h

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/*
 * Copyright 2019 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef SkSGTransformPriv_DEFINED
#define SkSGTransformPriv_DEFINED
 
#include "include/core/SkM44.h"
#include "include/core/SkMatrix.h"
#include "modules/sksg/include/SkSGTransform.h"
 
namespace sksg {
 
// Helper for accessing implementation-private Transform methods.
class TransformPriv final {
public:
 
    static bool Is44(const sk_sp<Transform>&t) { return t->is44(); }
 
    template <typename T, typename = std::enable_if<std::is_same<T, SkMatrix>::value ||
                                                    std::is_same<T, SkM44   >::value >>
    static T As(const sk_sp<Transform>&);
 
private:
    TransformPriv() = delete;
};
 
template <>
inline SkMatrix TransformPriv::As<SkMatrix>(const sk_sp<Transform>& t) {
    return t->asMatrix();
}
 
template <>
inline SkM44 TransformPriv::As<SkM44>(const sk_sp<Transform>& t) {
    return t->asM44();
}
 
} // namespace sksg
 
#endif // SkSGTransformPriv_DEFINED