skia2/experimental/svg/model/SkSVGValue.h
Tyler Denniston 308c07212a [svg] Implement currentColor for gradient stops
Required introducing a new type for stop-color attribute. A test that
exercises this is 'color-prop-01-b'.

Note that stop-color should be an inherited presentation attribute, but
that is not addressed in this CL.

Change-Id: I65b99bfc989f1d4b5a0746de31011b0e72eb6c59
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/282592
Commit-Queue: Tyler Denniston <tdenniston@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2020-04-14 16:20:44 +00:00

98 lines
3.4 KiB
C++

/*
* 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 "experimental/svg/model/SkSVGTypes.h"
#include "include/core/SkColor.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPath.h"
#include "include/core/SkTypes.h"
#include "include/private/SkNoncopyable.h"
class SkSVGValue : public SkNoncopyable {
public:
enum class Type {
kClip,
kColor,
kDashArray,
kFillRule,
kLength,
kLineCap,
kLineJoin,
kNumber,
kPaint,
kPath,
kPoints,
kSpreadMethod,
kStopColor,
kString,
kTransform,
kViewBox,
kVisibility,
};
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 T, SkSVGValue::Type ValueType>
class SkSVGWrapperValue final : public SkSVGValue {
public:
static constexpr Type TYPE = ValueType;
explicit SkSVGWrapperValue(const T& v)
: INHERITED(ValueType)
, fWrappedValue(v) { }
operator const T&() const { return fWrappedValue; }
const T* operator->() const { return &fWrappedValue; }
private:
// Stack-only
void* operator new(size_t) = delete;
void* operator new(size_t, void*) = delete;
const T& fWrappedValue;
typedef SkSVGValue INHERITED;
};
using SkSVGClipValue = SkSVGWrapperValue<SkSVGClip , SkSVGValue::Type::kClip >;
using SkSVGColorValue = SkSVGWrapperValue<SkSVGColorType , SkSVGValue::Type::kColor >;
using SkSVGFillRuleValue = SkSVGWrapperValue<SkSVGFillRule , SkSVGValue::Type::kFillRule >;
using SkSVGLengthValue = SkSVGWrapperValue<SkSVGLength , SkSVGValue::Type::kLength >;
using SkSVGPathValue = SkSVGWrapperValue<SkPath , SkSVGValue::Type::kPath >;
using SkSVGTransformValue = SkSVGWrapperValue<SkSVGTransformType, SkSVGValue::Type::kTransform >;
using SkSVGViewBoxValue = SkSVGWrapperValue<SkSVGViewBoxType , SkSVGValue::Type::kViewBox >;
using SkSVGPaintValue = SkSVGWrapperValue<SkSVGPaint , SkSVGValue::Type::kPaint >;
using SkSVGLineCapValue = SkSVGWrapperValue<SkSVGLineCap , SkSVGValue::Type::kLineCap >;
using SkSVGLineJoinValue = SkSVGWrapperValue<SkSVGLineJoin , SkSVGValue::Type::kLineJoin >;
using SkSVGNumberValue = SkSVGWrapperValue<SkSVGNumberType , SkSVGValue::Type::kNumber >;
using SkSVGPointsValue = SkSVGWrapperValue<SkSVGPointsType , SkSVGValue::Type::kPoints >;
using SkSVGStringValue = SkSVGWrapperValue<SkSVGStringType , SkSVGValue::Type::kString >;
using SkSVGSpreadMethodValue = SkSVGWrapperValue<SkSVGSpreadMethod ,
SkSVGValue::Type::kSpreadMethod>;
using SkSVGStopColorValue = SkSVGWrapperValue<SkSVGStopColor , SkSVGValue::Type::kStopColor >;
using SkSVGVisibilityValue = SkSVGWrapperValue<SkSVGVisibility , SkSVGValue::Type::kVisibility>;
using SkSVGDashArrayValue = SkSVGWrapperValue<SkSVGDashArray , SkSVGValue::Type::kDashArray >;
#endif // SkSVGValue_DEFINED