132 lines
2.9 KiB
C++
132 lines
2.9 KiB
C++
/*
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* Copyright 2018 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "modules/skottie/src/SkottieJson.h"
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#include "include/core/SkData.h"
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#include "include/core/SkPath.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkStream.h"
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#include "include/core/SkString.h"
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#include "modules/skottie/src/SkottieValue.h"
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#include <limits>
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#include <vector>
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namespace skottie {
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using namespace skjson;
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template <>
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bool Parse<SkScalar>(const Value& v, SkScalar* s) {
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// Some versions wrap values as single-element arrays.
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if (const skjson::ArrayValue* array = v) {
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if (array->size() > 0) {
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return Parse((*array)[0], s);
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}
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}
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if (const skjson::NumberValue* num = v) {
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*s = static_cast<SkScalar>(**num);
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return true;
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}
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return false;
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}
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template <>
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bool Parse<bool>(const Value& v, bool* b) {
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switch(v.getType()) {
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case Value::Type::kNumber:
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*b = SkToBool(*v.as<NumberValue>());
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return true;
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case Value::Type::kBool:
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*b = *v.as<BoolValue>();
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return true;
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default:
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break;
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}
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return false;
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}
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template <typename T>
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bool ParseIntegral(const Value& v, T* result) {
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if (const skjson::NumberValue* num = v) {
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const auto dbl = **num;
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if (dbl > static_cast<double>(std::numeric_limits<T>::max()) ||
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dbl < static_cast<double>(std::numeric_limits<T>::min())) {
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return false;
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}
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*result = static_cast<T>(dbl);
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return true;
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}
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return false;
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}
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template <>
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bool Parse<int>(const Value& v, int* i) {
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return ParseIntegral(v, i);
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}
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template <>
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bool Parse<size_t>(const Value& v, size_t* sz) {
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return ParseIntegral(v, sz);
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}
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template <>
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bool Parse<SkString>(const Value& v, SkString* s) {
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if (const skjson::StringValue* sv = v) {
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s->set(sv->begin(), sv->size());
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return true;
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}
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return false;
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}
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template <>
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bool Parse<SkV2>(const Value& v, SkV2* v2) {
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if (!v.is<ArrayValue>())
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return false;
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const auto& av = v.as<ArrayValue>();
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// We need at least two scalars (BM sometimes exports a third value == 0).
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return av.size() >= 2
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&& Parse<SkScalar>(av[0], &v2->x)
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&& Parse<SkScalar>(av[1], &v2->y);
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}
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template <>
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bool Parse<SkPoint>(const Value& v, SkPoint* pt) {
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if (!v.is<ObjectValue>())
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return false;
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const auto& ov = v.as<ObjectValue>();
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return Parse<SkScalar>(ov["x"], &pt->fX)
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&& Parse<SkScalar>(ov["y"], &pt->fY);
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}
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template <>
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bool Parse<VectorValue>(const Value& v, VectorValue* vec) {
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if (!v.is<ArrayValue>())
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return false;
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const auto& av = v.as<ArrayValue>();
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vec->resize(av.size());
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for (size_t i = 0; i < av.size(); ++i) {
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if (!Parse(av[i], vec->data() + i)) {
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return false;
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}
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}
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return true;
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}
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} // namespace skottie
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