134 lines
4.1 KiB
C++
134 lines
4.1 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <functional>
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#include <limits>
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#include <folly/Hash.h>
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#include <folly/Optional.h>
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#include <react/attributedstring/primitives.h>
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#include <react/core/LayoutPrimitives.h>
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#include <react/core/ReactPrimitives.h>
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#include <react/debug/DebugStringConvertible.h>
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#include <react/graphics/Color.h>
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#include <react/graphics/Geometry.h>
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namespace facebook {
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namespace react {
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class TextAttributes;
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using SharedTextAttributes = std::shared_ptr<const TextAttributes>;
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class TextAttributes : public DebugStringConvertible {
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public:
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/*
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* Returns TextAttribute object which has actual default attribute values
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* (e.g. `foregroundColor = black`), in oppose to TextAttribute's default
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* constructor which creates an object with nulled attributes.
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*/
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static TextAttributes defaultTextAttributes();
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#pragma mark - Fields
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// Color
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SharedColor foregroundColor{};
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SharedColor backgroundColor{};
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Float opacity{std::numeric_limits<Float>::quiet_NaN()};
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// Font
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std::string fontFamily{""};
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Float fontSize{std::numeric_limits<Float>::quiet_NaN()};
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Float fontSizeMultiplier{std::numeric_limits<Float>::quiet_NaN()};
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folly::Optional<FontWeight> fontWeight{};
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folly::Optional<FontStyle> fontStyle{};
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folly::Optional<FontVariant> fontVariant{};
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folly::Optional<bool> allowFontScaling{};
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Float letterSpacing{std::numeric_limits<Float>::quiet_NaN()};
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// Paragraph Styles
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Float lineHeight{std::numeric_limits<Float>::quiet_NaN()};
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folly::Optional<TextAlignment> alignment{};
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folly::Optional<WritingDirection> baseWritingDirection{};
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// Decoration
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SharedColor textDecorationColor{};
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folly::Optional<TextDecorationLineType> textDecorationLineType{};
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folly::Optional<TextDecorationLineStyle> textDecorationLineStyle{};
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folly::Optional<TextDecorationLinePattern> textDecorationLinePattern{};
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// Shadow
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// TODO: Use `Point` type instead of `Size` for `textShadowOffset` attribute.
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folly::Optional<Size> textShadowOffset{};
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Float textShadowRadius{std::numeric_limits<Float>::quiet_NaN()};
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SharedColor textShadowColor{};
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// Special
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folly::Optional<bool> isHighlighted{};
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// TODO T59221129: document where this value comes from and how it is set.
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// It's not clear if this is being used properly, or if it's being set at all.
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// Currently, it is intentionally *not* being set as part of BaseTextProps
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// construction.
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folly::Optional<LayoutDirection> layoutDirection{};
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#pragma mark - Operations
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void apply(TextAttributes textAttributes);
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#pragma mark - Operators
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bool operator==(const TextAttributes &rhs) const;
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bool operator!=(const TextAttributes &rhs) const;
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#pragma mark - DebugStringConvertible
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#if RN_DEBUG_STRING_CONVERTIBLE
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SharedDebugStringConvertibleList getDebugProps() const override;
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#endif
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};
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} // namespace react
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} // namespace facebook
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namespace std {
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template <>
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struct hash<facebook::react::TextAttributes> {
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size_t operator()(
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const facebook::react::TextAttributes &textAttributes) const {
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return folly::hash::hash_combine(
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0,
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textAttributes.foregroundColor,
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textAttributes.backgroundColor,
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textAttributes.opacity,
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textAttributes.fontFamily,
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textAttributes.fontSize,
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textAttributes.fontSizeMultiplier,
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textAttributes.fontWeight,
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textAttributes.fontStyle,
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textAttributes.fontVariant,
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textAttributes.allowFontScaling,
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textAttributes.letterSpacing,
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textAttributes.lineHeight,
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textAttributes.alignment,
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textAttributes.baseWritingDirection,
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textAttributes.textDecorationColor,
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textAttributes.textDecorationLineType,
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textAttributes.textDecorationLineStyle,
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textAttributes.textDecorationLinePattern,
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textAttributes.textShadowOffset,
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textAttributes.textShadowRadius,
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textAttributes.textShadowColor,
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textAttributes.isHighlighted,
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textAttributes.layoutDirection);
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}
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};
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} // namespace std
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