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- /*
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
- #pragma once
- #include <limits>
- #include <folly/Hash.h>
- #include <react/attributedstring/primitives.h>
- #include <react/debug/DebugStringConvertible.h>
- #include <react/graphics/Geometry.h>
- namespace facebook {
- namespace react {
- class ParagraphAttributes;
- using SharedParagraphAttributes = std::shared_ptr<const ParagraphAttributes>;
- /*
- * Represents all visual attributes of a paragraph of text.
- * Two data structures, ParagraphAttributes and AttributedText, should be
- * enough to define visual representation of a piece of text on the screen.
- */
- class ParagraphAttributes : public DebugStringConvertible {
- public:
- #pragma mark - Fields
- /*
- * Maximum number of lines which paragraph can take.
- * Zero value represents "no limit".
- */
- int maximumNumberOfLines{};
- /*
- * In case if a text cannot fit given boundaries, defines a place where
- * an ellipsize should be placed.
- */
- EllipsizeMode ellipsizeMode{};
- TextBreakStrategy textBreakStrategy{};
- /*
- * Enables font size adjustment to fit constrained boundaries.
- */
- bool adjustsFontSizeToFit{};
- /*
- * In case of font size adjustment enabled, defines minimum and maximum
- * font sizes.
- */
- Float minimumFontSize{std::numeric_limits<Float>::quiet_NaN()};
- Float maximumFontSize{std::numeric_limits<Float>::quiet_NaN()};
- bool operator==(const ParagraphAttributes &) const;
- bool operator!=(const ParagraphAttributes &) const;
- #pragma mark - DebugStringConvertible
- #if RN_DEBUG_STRING_CONVERTIBLE
- SharedDebugStringConvertibleList getDebugProps() const override;
- #endif
- };
- } // namespace react
- } // namespace facebook
- namespace std {
- template <>
- struct hash<facebook::react::ParagraphAttributes> {
- size_t operator()(
- const facebook::react::ParagraphAttributes &attributes) const {
- return folly::hash::hash_combine(
- 0,
- attributes.maximumNumberOfLines,
- attributes.ellipsizeMode,
- attributes.textBreakStrategy,
- attributes.adjustsFontSizeToFit,
- attributes.minimumFontSize,
- attributes.maximumFontSize);
- }
- };
- } // namespace std
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