mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Andres Suarez
8bd3edec88
Reviewed By: aaronabramov Differential Revision: D33367752 fbshipit-source-id: 4ce94d184485e5ee0a62cf67ad2d3ba16e285c8f
106 lines
2.8 KiB
C++
106 lines
2.8 KiB
C++
/*
|
|
* Copyright (c) Meta Platforms, Inc. and 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/renderer/attributedstring/primitives.h>
|
|
#include <react/renderer/debug/DebugStringConvertible.h>
|
|
#include <react/renderer/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{};
|
|
|
|
/*
|
|
* (Android only) Break strategy for breaking paragraphs into lines.
|
|
*/
|
|
TextBreakStrategy textBreakStrategy{TextBreakStrategy::HighQuality};
|
|
|
|
/*
|
|
* Enables font size adjustment to fit constrained boundaries.
|
|
*/
|
|
bool adjustsFontSizeToFit{};
|
|
|
|
/*
|
|
* (Android only) Leaves enough room for ascenders and descenders instead of
|
|
* using the font ascent and descent strictly.
|
|
*/
|
|
bool includeFontPadding{true};
|
|
|
|
/*
|
|
* (Android only) Frequency of automatic hyphenation to use when determining
|
|
* word breaks.
|
|
*/
|
|
HyphenationFrequency android_hyphenationFrequency{};
|
|
|
|
/*
|
|
* 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,
|
|
attributes.includeFontPadding,
|
|
attributes.android_hyphenationFrequency);
|
|
}
|
|
};
|
|
} // namespace std
|