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Diffstat (limited to 'experimental/svg/model/SkSVGValue.h')
-rw-r--r-- | experimental/svg/model/SkSVGValue.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/experimental/svg/model/SkSVGValue.h b/experimental/svg/model/SkSVGValue.h new file mode 100644 index 0000000000..3d3cd6efc1 --- /dev/null +++ b/experimental/svg/model/SkSVGValue.h @@ -0,0 +1,59 @@ +/* + * 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 "SkTypes.h" + +class SkSVGValue : public SkNoncopyable { +public: + enum class Type { + Color, + Path, + Transform, + }; + + 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; +}; + +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; + + using INHERITED = SkSVGValue; +}; + +using SkSVGColorValue = SkSVGWrapperValue<SkColor , SkSVGValue::Type::Color >; +using SkSVGPathValue = SkSVGWrapperValue<SkPath , SkSVGValue::Type::Path >; +using SkSVGTransformValue = SkSVGWrapperValue<SkMatrix, SkSVGValue::Type::Transform>; + +#endif // SkSVGValue_DEFINED |