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node_modules/react-native/ReactCommon/react/renderer/attributedstring/TextAttributes.cpp

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+/*
+ * 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.
+ */
+
+#include "TextAttributes.h"
+
+#include <react/renderer/attributedstring/conversions.h>
+#include <react/renderer/core/conversions.h>
+#include <react/renderer/core/graphicsConversions.h>
+#include <react/utils/FloatComparison.h>
+#include <cmath>
+
+#include <react/renderer/debug/debugStringConvertibleUtils.h>
+
+namespace facebook::react {
+
+void TextAttributes::apply(TextAttributes textAttributes) {
+  // Color
+  foregroundColor = textAttributes.foregroundColor
+      ? textAttributes.foregroundColor
+      : foregroundColor;
+  backgroundColor = textAttributes.backgroundColor
+      ? textAttributes.backgroundColor
+      : backgroundColor;
+  opacity =
+      !std::isnan(textAttributes.opacity) ? textAttributes.opacity : opacity;
+
+  // Font
+  fontFamily = !textAttributes.fontFamily.empty() ? textAttributes.fontFamily
+                                                  : fontFamily;
+  fontSize =
+      !std::isnan(textAttributes.fontSize) ? textAttributes.fontSize : fontSize;
+  fontSizeMultiplier = !std::isnan(textAttributes.fontSizeMultiplier)
+      ? textAttributes.fontSizeMultiplier
+      : fontSizeMultiplier;
+  fontWeight = textAttributes.fontWeight.has_value() ? textAttributes.fontWeight
+                                                     : fontWeight;
+  fontStyle = textAttributes.fontStyle.has_value() ? textAttributes.fontStyle
+                                                   : fontStyle;
+  fontVariant = textAttributes.fontVariant.has_value()
+      ? textAttributes.fontVariant
+      : fontVariant;
+  allowFontScaling = textAttributes.allowFontScaling.has_value()
+      ? textAttributes.allowFontScaling
+      : allowFontScaling;
+  maxFontSizeMultiplier = !std::isnan(textAttributes.maxFontSizeMultiplier)
+      ? textAttributes.maxFontSizeMultiplier
+      : maxFontSizeMultiplier;
+  dynamicTypeRamp = textAttributes.dynamicTypeRamp.has_value()
+      ? textAttributes.dynamicTypeRamp
+      : dynamicTypeRamp;
+  letterSpacing = !std::isnan(textAttributes.letterSpacing)
+      ? textAttributes.letterSpacing
+      : letterSpacing;
+  textTransform = textAttributes.textTransform.has_value()
+      ? textAttributes.textTransform
+      : textTransform;
+
+  // Paragraph Styles
+  lineHeight = !std::isnan(textAttributes.lineHeight)
+      ? textAttributes.lineHeight
+      : lineHeight;
+  alignment = textAttributes.alignment.has_value() ? textAttributes.alignment
+                                                   : alignment;
+  baseWritingDirection = textAttributes.baseWritingDirection.has_value()
+      ? textAttributes.baseWritingDirection
+      : baseWritingDirection;
+  lineBreakStrategy = textAttributes.lineBreakStrategy.has_value()
+      ? textAttributes.lineBreakStrategy
+      : lineBreakStrategy;
+  lineBreakMode = textAttributes.lineBreakMode.has_value()
+      ? textAttributes.lineBreakMode
+      : lineBreakMode;
+
+  // Decoration
+  textDecorationColor = textAttributes.textDecorationColor
+      ? textAttributes.textDecorationColor
+      : textDecorationColor;
+  textDecorationLineType = textAttributes.textDecorationLineType.has_value()
+      ? textAttributes.textDecorationLineType
+      : textDecorationLineType;
+  textDecorationStyle = textAttributes.textDecorationStyle.has_value()
+      ? textAttributes.textDecorationStyle
+      : textDecorationStyle;
+
+  // Shadow
+  textShadowOffset = textAttributes.textShadowOffset.has_value()
+      ? textAttributes.textShadowOffset.value()
+      : textShadowOffset;
+  textShadowRadius = !std::isnan(textAttributes.textShadowRadius)
+      ? textAttributes.textShadowRadius
+      : textShadowRadius;
+  textShadowColor = textAttributes.textShadowColor
+      ? textAttributes.textShadowColor
+      : textShadowColor;
+
+  // Special
+  isHighlighted = textAttributes.isHighlighted.has_value()
+      ? textAttributes.isHighlighted
+      : isHighlighted;
+  // TextAttributes "inherits" the isPressable value from ancestors, so this
+  // only applies the current node's value for isPressable if it is truthy.
+  isPressable =
+      textAttributes.isPressable.has_value() && *textAttributes.isPressable
+      ? textAttributes.isPressable
+      : isPressable;
+  layoutDirection = textAttributes.layoutDirection.has_value()
+      ? textAttributes.layoutDirection
+      : layoutDirection;
+  accessibilityRole = textAttributes.accessibilityRole.has_value()
+      ? textAttributes.accessibilityRole
+      : accessibilityRole;
+  role = textAttributes.role.has_value() ? textAttributes.role : role;
+}
+
+#pragma mark - Operators
+
+bool TextAttributes::operator==(const TextAttributes& rhs) const {
+  return std::tie(
+             foregroundColor,
+             backgroundColor,
+             fontFamily,
+             fontWeight,
+             fontStyle,
+             fontVariant,
+             allowFontScaling,
+             dynamicTypeRamp,
+             alignment,
+             baseWritingDirection,
+             lineBreakStrategy,
+             textDecorationColor,
+             textDecorationLineType,
+             textDecorationStyle,
+             textShadowOffset,
+             textShadowColor,
+             isHighlighted,
+             isPressable,
+             layoutDirection,
+             accessibilityRole,
+             role,
+             textTransform) ==
+      std::tie(
+             rhs.foregroundColor,
+             rhs.backgroundColor,
+             rhs.fontFamily,
+             rhs.fontWeight,
+             rhs.fontStyle,
+             rhs.fontVariant,
+             rhs.allowFontScaling,
+             rhs.dynamicTypeRamp,
+             rhs.alignment,
+             rhs.baseWritingDirection,
+             rhs.lineBreakStrategy,
+             rhs.textDecorationColor,
+             rhs.textDecorationLineType,
+             rhs.textDecorationStyle,
+             rhs.textShadowOffset,
+             rhs.textShadowColor,
+             rhs.isHighlighted,
+             rhs.isPressable,
+             rhs.layoutDirection,
+             rhs.accessibilityRole,
+             rhs.role,
+             rhs.textTransform) &&
+      floatEquality(maxFontSizeMultiplier, rhs.maxFontSizeMultiplier) &&
+      floatEquality(opacity, rhs.opacity) &&
+      floatEquality(fontSize, rhs.fontSize) &&
+      floatEquality(fontSizeMultiplier, rhs.fontSizeMultiplier) &&
+      floatEquality(letterSpacing, rhs.letterSpacing) &&
+      floatEquality(lineHeight, rhs.lineHeight) &&
+      floatEquality(textShadowRadius, rhs.textShadowRadius);
+}
+
+TextAttributes TextAttributes::defaultTextAttributes() {
+  static auto textAttributes = [] {
+    auto defaultAttrs = TextAttributes{};
+    // Non-obvious (can be different among platforms) default text attributes.
+    defaultAttrs.foregroundColor = blackColor();
+    defaultAttrs.backgroundColor = clearColor();
+    defaultAttrs.fontSize = 14.0;
+    defaultAttrs.fontSizeMultiplier = 1.0;
+    return defaultAttrs;
+  }();
+  return textAttributes;
+}
+
+#pragma mark - DebugStringConvertible
+
+#if RN_DEBUG_STRING_CONVERTIBLE
+SharedDebugStringConvertibleList TextAttributes::getDebugProps() const {
+  const auto& textAttributes = TextAttributes::defaultTextAttributes();
+  return {
+      // Color
+      debugStringConvertibleItem(
+          "backgroundColor", backgroundColor, textAttributes.backgroundColor),
+      debugStringConvertibleItem(
+          "foregroundColor", foregroundColor, textAttributes.foregroundColor),
+      debugStringConvertibleItem("opacity", opacity, textAttributes.opacity),
+
+      // Font
+      debugStringConvertibleItem(
+          "fontFamily", fontFamily, textAttributes.fontFamily),
+      debugStringConvertibleItem("fontSize", fontSize, textAttributes.fontSize),
+      debugStringConvertibleItem(
+          "fontSizeMultiplier",
+          fontSizeMultiplier,
+          textAttributes.fontSizeMultiplier),
+      debugStringConvertibleItem(
+          "fontWeight", fontWeight, textAttributes.fontWeight),
+      debugStringConvertibleItem(
+          "fontStyle", fontStyle, textAttributes.fontStyle),
+      debugStringConvertibleItem(
+          "fontVariant", fontVariant, textAttributes.fontVariant),
+      debugStringConvertibleItem(
+          "allowFontScaling",
+          allowFontScaling,
+          textAttributes.allowFontScaling),
+      debugStringConvertibleItem(
+          "maxFontSizeMultiplier",
+          maxFontSizeMultiplier,
+          textAttributes.maxFontSizeMultiplier),
+      debugStringConvertibleItem(
+          "dynamicTypeRamp", dynamicTypeRamp, textAttributes.dynamicTypeRamp),
+      debugStringConvertibleItem(
+          "letterSpacing", letterSpacing, textAttributes.letterSpacing),
+
+      // Paragraph Styles
+      debugStringConvertibleItem(
+          "lineHeight", lineHeight, textAttributes.lineHeight),
+      debugStringConvertibleItem(
+          "alignment", alignment, textAttributes.alignment),
+      debugStringConvertibleItem(
+          "writingDirection",
+          baseWritingDirection,
+          textAttributes.baseWritingDirection),
+      debugStringConvertibleItem(
+          "lineBreakStrategyIOS",
+          lineBreakStrategy,
+          textAttributes.lineBreakStrategy),
+      debugStringConvertibleItem(
+          "lineBreakModeIOS", lineBreakMode, textAttributes.lineBreakMode),
+
+      // Decoration
+      debugStringConvertibleItem(
+          "textDecorationColor",
+          textDecorationColor,
+          textAttributes.textDecorationColor),
+      debugStringConvertibleItem(
+          "textDecorationLineType",
+          textDecorationLineType,
+          textAttributes.textDecorationLineType),
+      debugStringConvertibleItem(
+          "textDecorationStyle",
+          textDecorationStyle,
+          textAttributes.textDecorationStyle),
+
+      // Shadow
+      debugStringConvertibleItem(
+          "textShadowOffset",
+          textShadowOffset,
+          textAttributes.textShadowOffset),
+      debugStringConvertibleItem(
+          "textShadowRadius",
+          textShadowRadius,
+          textAttributes.textShadowRadius),
+      debugStringConvertibleItem(
+          "textShadowColor", textShadowColor, textAttributes.textShadowColor),
+
+      // Special
+      debugStringConvertibleItem(
+          "isHighlighted", isHighlighted, textAttributes.isHighlighted),
+      debugStringConvertibleItem(
+          "isPressable", isPressable, textAttributes.isPressable),
+      debugStringConvertibleItem(
+          "layoutDirection", layoutDirection, textAttributes.layoutDirection),
+      debugStringConvertibleItem(
+          "accessibilityRole",
+          accessibilityRole,
+          textAttributes.accessibilityRole),
+      debugStringConvertibleItem("role", role, textAttributes.role),
+  };
+}
+#endif
+
+} // namespace facebook::react