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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkSVGValue_DEFINED
#define SkSVGValue_DEFINED
#include "SkColor.h"
#include "SkMatrix.h"
#include "SkPath.h"
#include "SkSVGTypes.h"
#include "SkTypes.h"
class SkSVGValue : public SkNoncopyable {
public:
enum class Type {
kColor,
kLength,
kPath,
kTransform,
};
Type type() const { return fType; }
template <typename T>
const T* as() const {
return fType == T::TYPE ? static_cast<const T*>(this) : nullptr;
}
protected:
SkSVGValue(Type t) : fType(t) { }
private:
Type fType;
typedef SkNoncopyable INHERITED;
};
template <typename SkiaType, SkSVGValue::Type ValueType>
class SkSVGWrapperValue final : public SkSVGValue {
public:
static constexpr Type TYPE = ValueType;
explicit SkSVGWrapperValue(const SkiaType& v)
: INHERITED(ValueType)
, fWrappedValue(v) { }
operator const SkiaType&() const { return fWrappedValue; }
private:
SkiaType fWrappedValue;
typedef SkSVGValue INHERITED;
};
using SkSVGColorValue = SkSVGWrapperValue<SkSVGColor , SkSVGValue::Type::kColor >;
using SkSVGLengthValue = SkSVGWrapperValue<SkSVGLength, SkSVGValue::Type::kLength >;
using SkSVGPathValue = SkSVGWrapperValue<SkPath , SkSVGValue::Type::kPath >;
using SkSVGTransformValue = SkSVGWrapperValue<SkMatrix , SkSVGValue::Type::kTransform>;
#endif // SkSVGValue_DEFINED
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