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543 行
27 KiB

using System;
using System.Collections.Generic;
using System.Linq;
using Unity.UIWidgets.foundation;
using Unity.UIWidgets.ui;
namespace Unity.UIWidgets.painting {
public class TextStyle : Diagnosticable, IEquatable<TextStyle> {
public static readonly float _defaultFontSize = 14.0f;
public readonly bool inherit;
public readonly Color color;
public readonly Color backgroundColor;
public readonly float? fontSize;
public readonly FontWeight fontWeight;
public readonly FontStyle? fontStyle;
public readonly float? letterSpacing;
public readonly float? wordSpacing;
public readonly TextBaseline? textBaseline;
public readonly float? height;
public readonly TextDecoration decoration;
public readonly Color decorationColor;
public readonly TextDecorationStyle? decorationStyle;
public readonly float? decorationThickness;
public readonly Paint foreground;
public readonly Paint background;
public readonly string fontFamily;
public readonly List<BoxShadow> shadows;
public List<string> fontFamilyFallback {
get { return this._fontFamilyFallback; }
}
readonly List<string> _fontFamilyFallback;
public readonly string debugLabel;
const string _kDefaultDebugLabel = "unknown";
const string _kColorForegroundWarning = "Cannot provide both a color and a foreground\n" +
"The color argument is just a shorthand for 'foreground: new Paint()..color = color'.";
const string _kColorBackgroundWarning = "Cannot provide both a backgroundColor and a background\n" +
"The backgroundColor argument is just a shorthand for 'background: new Paint()..color = color'.";
public TextStyle(bool inherit = true,
Color color = null,
Color backgroundColor = null,
float? fontSize = null,
FontWeight fontWeight = null,
FontStyle? fontStyle = null,
float? letterSpacing = null,
float? wordSpacing = null,
TextBaseline? textBaseline = null,
float? height = null,
Paint foreground = null,
Paint background = null,
TextDecoration decoration = null,
Color decorationColor = null,
TextDecorationStyle? decorationStyle = null,
float? decorationThickness = null,
string fontFamily = null,
List<string> fontFamilyFallback = null,
List<BoxShadow> shadows = null,
string debugLabel = null) {
D.assert(color == null || foreground == null, () => _kColorForegroundWarning);
D.assert(backgroundColor == null || background == null, () => _kColorBackgroundWarning);
this.inherit = inherit;
this.color = color;
this.backgroundColor = backgroundColor;
this.fontSize = fontSize;
this.fontWeight = fontWeight;
this.fontStyle = fontStyle;
this.letterSpacing = letterSpacing;
this.wordSpacing = wordSpacing;
this.textBaseline = textBaseline;
this.height = height;
this.decoration = decoration;
this.decorationColor = decorationColor;
this.decorationStyle = decorationStyle;
this.decorationThickness = decorationThickness;
this.fontFamily = fontFamily;
this._fontFamilyFallback = fontFamilyFallback;
this.debugLabel = debugLabel;
this.foreground = foreground;
this.background = background;
this.shadows = shadows;
}
public RenderComparison compareTo(TextStyle other) {
if (this.inherit != other.inherit || this.fontFamily != other.fontFamily ||
this.fontSize != other.fontSize || this.fontWeight != other.fontWeight ||
this.fontStyle != other.fontStyle || this.letterSpacing != other.letterSpacing ||
this.wordSpacing != other.wordSpacing || this.textBaseline != other.textBaseline ||
this.height != other.height || this.background != other.background ||
this.shadows.equalsList(other.shadows)) {
return RenderComparison.layout;
}
if (this.color != other.color || this.decoration != other.decoration ||
this.decorationColor != other.decorationColor ||
this.decorationStyle != other.decorationStyle) {
return RenderComparison.paint;
}
return RenderComparison.identical;
}
public ParagraphStyle getParagraphStyle(TextAlign textAlign,
TextDirection textDirection, string ellipsis, int? maxLines, float textScaleFactor = 1.0f) {
return new ParagraphStyle(
textAlign, textDirection, this.fontWeight, this.fontStyle,
maxLines, (this.fontSize ?? _defaultFontSize) * textScaleFactor, this.fontFamily, this.height,
ellipsis
);
}
public TextStyle apply(
Color color = null,
Color backgroundColor = null,
TextDecoration decoration = null,
Color decorationColor = null,
TextDecorationStyle? decorationStyle = null,
float decorationThicknessFactor = 1.0f,
float decorationThicknessDelta = 0.0f,
string fontFamily = null,
List<string> fontFamilyFallback = null,
List<BoxShadow> shadows = null,
float fontSizeFactor = 1.0f,
float fontSizeDelta = 0.0f,
int fontWeightDelta = 0,
float letterSpacingFactor = 1.0f,
float letterSpacingDelta = 0.0f,
float wordSpacingFactor = 1.0f,
float wordSpacingDelta = 0.0f,
float heightFactor = 1.0f,
float heightDelta = 0.0f
) {
D.assert(this.fontSize != null || (fontSizeFactor == 1.0f && fontSizeDelta == 0.0f));
D.assert(this.fontWeight != null || fontWeightDelta == 0.0f);
D.assert(this.letterSpacing != null || (letterSpacingFactor == 1.0f && letterSpacingDelta == 0.0f));
D.assert(this.wordSpacing != null || (wordSpacingFactor == 1.0f && wordSpacingDelta == 0.0f));
D.assert(this.height != null || (heightFactor == 1.0f && heightDelta == 0.0f));
D.assert(this.decorationThickness != null ||
(decorationThicknessFactor == 1.0f && decorationThicknessDelta == 0.0f));
string modifiedDebugLabel = "";
D.assert(() => {
if (this.debugLabel != null) {
modifiedDebugLabel = this.debugLabel + ".apply";
}
return true;
});
return new TextStyle(
inherit: this.inherit,
color: this.foreground == null ? color ?? this.color : null,
backgroundColor: this.background == null ? backgroundColor ?? this.backgroundColor : null,
fontFamily: fontFamily ?? this.fontFamily,
fontFamilyFallback: fontFamilyFallback ?? this.fontFamilyFallback,
fontSize: this.fontSize == null ? null : this.fontSize * fontSizeFactor + fontSizeDelta,
fontWeight: this.fontWeight == null ? null : this.fontWeight,
fontStyle: this.fontStyle,
letterSpacing: this.letterSpacing == null
? null
: this.letterSpacing * letterSpacingFactor + letterSpacingDelta,
wordSpacing: this.wordSpacing == null ? null : this.wordSpacing * wordSpacingFactor + wordSpacingDelta,
textBaseline: this.textBaseline,
height: this.height == null ? null : this.height * heightFactor + heightDelta,
foreground: this.foreground,
background: this.background,
decoration: decoration ?? this.decoration,
decorationColor: decorationColor ?? this.decorationColor,
decorationStyle: decorationStyle ?? this.decorationStyle,
decorationThickness: this.decorationThickness == null
? null
: this.decorationThickness * decorationThicknessFactor + decorationThicknessDelta,
shadows: shadows ?? this.shadows,
debugLabel: modifiedDebugLabel
);
}
public TextStyle merge(TextStyle other) {
if (other == null) {
return this;
}
if (!other.inherit) {
return other;
}
string mergedDebugLabel = null;
D.assert(() => {
if (other.debugLabel != null || this.debugLabel != null) {
mergedDebugLabel =
$"({this.debugLabel ?? _kDefaultDebugLabel}).merge({other.debugLabel ?? _kDefaultDebugLabel})";
}
return true;
});
return this.copyWith(
color: other.color,
backgroundColor: other.backgroundColor,
fontFamily: other.fontFamily,
fontFamilyFallback: other.fontFamilyFallback,
fontSize: other.fontSize,
fontWeight: other.fontWeight,
fontStyle: other.fontStyle,
letterSpacing: other.letterSpacing,
wordSpacing: other.wordSpacing,
textBaseline: other.textBaseline,
height: other.height,
foreground: other.foreground,
background: other.background,
decoration: other.decoration,
decorationColor: other.decorationColor,
decorationStyle: other.decorationStyle,
decorationThickness: other.decorationThickness,
shadows: other.shadows,
debugLabel: mergedDebugLabel
);
}
public TextStyle copyWith(
bool? inherit = null,
Color color = null,
Color backgroundColor = null,
string fontFamily = null,
List<string> fontFamilyFallback = null,
float? fontSize = null,
FontWeight fontWeight = null,
FontStyle? fontStyle = null,
float? letterSpacing = null,
float? wordSpacing = null,
TextBaseline? textBaseline = null,
float? height = null,
Paint foreground = null,
Paint background = null,
TextDecoration decoration = null,
Color decorationColor = null,
TextDecorationStyle? decorationStyle = null,
float? decorationThickness = null,
List<BoxShadow> shadows = null,
string debugLabel = null) {
D.assert(color == null || foreground == null, () => _kColorForegroundWarning);
D.assert(backgroundColor == null || background == null, () => _kColorBackgroundWarning);
string newDebugLabel = null;
D.assert(() => {
if (this.debugLabel != null) {
newDebugLabel = debugLabel ?? $"({this.debugLabel}).copyWith";
}
return true;
});
return new TextStyle(
inherit: inherit ?? this.inherit,
color: this.foreground == null && foreground == null ? color ?? this.color : null,
backgroundColor: this.background == null && background == null ? color ?? this.color : null,
fontFamily: fontFamily ?? this.fontFamily,
fontFamilyFallback: fontFamilyFallback ?? this.fontFamilyFallback,
fontSize: fontSize ?? this.fontSize,
fontWeight: fontWeight ?? this.fontWeight,
fontStyle: fontStyle ?? this.fontStyle,
letterSpacing: letterSpacing ?? this.letterSpacing,
wordSpacing: wordSpacing ?? this.wordSpacing,
textBaseline: textBaseline ?? this.textBaseline,
height: height ?? this.height,
decoration: decoration ?? this.decoration,
decorationColor: decorationColor ?? this.decorationColor,
decorationStyle: decorationStyle ?? this.decorationStyle,
decorationThickness: decorationThickness ?? this.decorationThickness,
foreground: foreground ?? this.foreground,
background: background ?? this.background,
shadows: shadows ?? this.shadows,
debugLabel: newDebugLabel
);
}
public static TextStyle lerp(TextStyle a, TextStyle b, float t) {
D.assert(a == null || b == null || a.inherit == b.inherit);
if (a == null && b == null) {
return null;
}
string lerpDebugLabel = "";
D.assert(() => {
lerpDebugLabel = "lerp" + (a?.debugLabel ?? _kDefaultDebugLabel) + "-" + t + "-" +
(b?.debugLabel ?? _kDefaultDebugLabel);
return true;
});
if (a == null) {
return new TextStyle(
inherit: b.inherit,
color: Color.lerp(null, b.color, t),
backgroundColor: Color.lerp(null, b.backgroundColor, t),
fontFamily: t < 0.5f ? null : b.fontFamily,
fontFamilyFallback: t < 0.5f ? null : b.fontFamilyFallback,
fontSize: t < 0.5f ? null : b.fontSize,
fontWeight: t < 0.5f ? null : b.fontWeight,
fontStyle: t < 0.5f ? null : b.fontStyle,
letterSpacing: t < 0.5f ? null : b.letterSpacing,
wordSpacing: t < 0.5f ? null : b.wordSpacing,
textBaseline: t < 0.5f ? null : b.textBaseline,
height: t < 0.5f ? null : b.height,
foreground: t < 0.5f ? null : b.foreground,
background: t < 0.5f ? null : b.background,
decoration: t < 0.5f ? null : b.decoration,
decorationColor: Color.lerp(null, b.decorationColor, t),
decorationStyle: t < 0.5f ? null : b.decorationStyle,
decorationThickness: t < 0.5f ? null : b.decorationThickness,
shadows: t < 0.5f ? null : b.shadows,
debugLabel: lerpDebugLabel
);
}
if (b == null) {
return new TextStyle(
inherit: a.inherit,
color: Color.lerp(a.color, null, t),
backgroundColor: Color.lerp(a.backgroundColor, null, t),
fontFamily: t < 0.5f ? a.fontFamily : null,
fontFamilyFallback: t < 0.5f ? a.fontFamilyFallback : null,
fontSize: t < 0.5f ? a.fontSize : null,
fontWeight: t < 0.5f ? a.fontWeight : null,
fontStyle: t < 0.5f ? a.fontStyle : null,
letterSpacing: t < 0.5f ? a.letterSpacing : null,
wordSpacing: t < 0.5f ? a.wordSpacing : null,
textBaseline: t < 0.5f ? a.textBaseline : null,
height: t < 0.5f ? a.height : null,
foreground: t < 0.5f ? a.foreground : null,
background: t < 0.5f ? a.background : null,
decoration: t < 0.5f ? a.decoration : null,
decorationColor: Color.lerp(a.decorationColor, null, t),
decorationStyle: t < 0.5f ? a.decorationStyle : null,
decorationThickness: t < 0.5f ? a.decorationThickness : null,
shadows: t < 0.5f ? a.shadows : null,
debugLabel: lerpDebugLabel
);
}
return new TextStyle(
inherit: b.inherit,
color: a.foreground == null && b.foreground == null ? Color.lerp(a.color, b.color, t) : null,
backgroundColor: a.background == null && b.background == null
? Color.lerp(a.backgroundColor, b.backgroundColor, t)
: null,
fontFamily: t < 0.5 ? a.fontFamily : b.fontFamily,
fontFamilyFallback: t < 0.5 ? a.fontFamilyFallback : b.fontFamilyFallback,
fontSize: MathUtils.lerpNullableFloat(a.fontSize ?? b.fontSize, b.fontSize ?? a.fontSize, t),
fontWeight: t < 0.5 ? a.fontWeight : b.fontWeight,
fontStyle: t < 0.5 ? a.fontStyle : b.fontStyle,
letterSpacing: MathUtils.lerpNullableFloat(a.letterSpacing ?? b.letterSpacing,
b.letterSpacing ?? a.letterSpacing, t),
wordSpacing: MathUtils.lerpNullableFloat(a.wordSpacing ?? b.wordSpacing,
b.wordSpacing ?? a.wordSpacing, t),
textBaseline: t < 0.5 ? a.textBaseline : b.textBaseline,
height: MathUtils.lerpNullableFloat(a.height ?? b.height, b.height ?? a.height, t),
foreground: (a.foreground != null || b.foreground != null)
? t < 0.5
? a.foreground ?? new Paint() {color = a.color}
: b.foreground ?? new Paint() {color = b.color}
: null,
background: (a.background != null || b.background != null)
? t < 0.5
? a.background ?? new Paint() {color = a.backgroundColor}
: b.background ?? new Paint() {color = b.backgroundColor}
: null,
decoration: t < 0.5 ? a.decoration : b.decoration,
decorationColor: Color.lerp(a.decorationColor, b.decorationColor, t),
decorationStyle: t < 0.5 ? a.decorationStyle : b.decorationStyle,
decorationThickness: MathUtils.lerpFloat(
a.decorationThickness ?? b.decorationThickness ?? 0.0f,
b.decorationThickness ?? a.decorationThickness ?? 0.0f, t),
shadows: t < 0.5f ? a.shadows : b.shadows,
debugLabel: lerpDebugLabel
);
}
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
base.debugFillProperties(properties);
List<DiagnosticsNode> styles = new List<DiagnosticsNode>();
styles.Add(new DiagnosticsProperty<Color>("color", this.color,
defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new DiagnosticsProperty<Color>("backgroundColor", this.backgroundColor,
defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new StringProperty("family", this.fontFamily, defaultValue: Diagnostics.kNullDefaultValue,
quoted: false));
styles.Add(new EnumerableProperty<string>("familyFallback", this.fontFamilyFallback,
defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new DiagnosticsProperty<float?>("size", this.fontSize,
defaultValue: Diagnostics.kNullDefaultValue));
string weightDescription = "";
if (this.fontWeight != null) {
weightDescription = this.fontWeight.weightValue.ToString();
}
styles.Add(new DiagnosticsProperty<FontWeight>(
"weight", this.fontWeight,
description: weightDescription,
defaultValue: Diagnostics.kNullDefaultValue
));
styles.Add(new EnumProperty<FontStyle?>("style", this.fontStyle,
defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new DiagnosticsProperty<float?>("letterSpacing", this.letterSpacing,
defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new DiagnosticsProperty<float?>("wordSpacing", this.wordSpacing,
defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new EnumProperty<TextBaseline?>("baseline", this.textBaseline,
defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new DiagnosticsProperty<float?>("height", this.height,
defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new StringProperty("foreground", this.foreground == null ? null : this.foreground.ToString(),
defaultValue: Diagnostics.kNullDefaultValue, quoted: false));
styles.Add(new StringProperty("background", this.background == null ? null : this.background.ToString(),
defaultValue: Diagnostics.kNullDefaultValue, quoted: false));
if (this.decoration != null) {
List<string> decorationDescription = new List<string>();
if (this.decorationStyle != null) {
decorationDescription.Add(this.decorationStyle.ToString());
}
styles.Add(new DiagnosticsProperty<Color>("decorationColor", this.decorationColor,
defaultValue: Diagnostics.kNullDefaultValue,
level: DiagnosticLevel.fine));
if (this.decorationColor != null) {
decorationDescription.Add(this.decorationColor.ToString());
}
styles.Add(new DiagnosticsProperty<TextDecoration>("decoration", this.decoration,
defaultValue: Diagnostics.kNullDefaultValue,
level: DiagnosticLevel.hidden));
if (this.decoration != null) {
decorationDescription.Add("$decoration");
}
D.assert(decorationDescription.isNotEmpty);
styles.Add(new MessageProperty("decoration", string.Join(" ", decorationDescription.ToArray())));
styles.Add(new FloatProperty("decorationThickness", this.decorationThickness, unit: "x",
defaultValue: Diagnostics.kNoDefaultValue));
}
bool styleSpecified = styles.Any((DiagnosticsNode n) => !n.isFiltered(DiagnosticLevel.info));
properties.add(new DiagnosticsProperty<bool>("inherit", this.inherit,
level: (!styleSpecified && this.inherit) ? DiagnosticLevel.fine : DiagnosticLevel.info));
foreach (var style in styles) {
properties.add(style);
}
if (!styleSpecified) {
properties.add(new FlagProperty("inherit", value: this.inherit, ifTrue: "<all styles inherited>",
ifFalse: "<no style specified>"));
}
}
public bool Equals(TextStyle other) {
if (ReferenceEquals(null, other)) {
return false;
}
if (ReferenceEquals(this, other)) {
return true;
}
return this.inherit == other.inherit &&
Equals(this.color, other.color) &&
Equals(this.backgroundColor, other.backgroundColor) &&
this.fontSize.Equals(other.fontSize) &&
this.fontWeight == other.fontWeight &&
this.fontStyle == other.fontStyle &&
this.letterSpacing.Equals(other.letterSpacing) &&
this.wordSpacing.Equals(other.wordSpacing) &&
this.textBaseline == other.textBaseline &&
this.height.Equals(other.height) &&
Equals(this.decoration, other.decoration) &&
Equals(this.decorationColor, other.decorationColor) &&
this.decorationStyle == other.decorationStyle &&
this.decorationThickness == other.decorationThickness &&
Equals(this.foreground, other.foreground) &&
Equals(this.background, other.background) &&
this.fontFamilyFallback.equalsList(other.fontFamilyFallback) &&
this.shadows.equalsList(other.shadows) &&
string.Equals(this.fontFamily, other.fontFamily);
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, obj)) {
return false;
}
if (ReferenceEquals(this, obj)) {
return true;
}
if (obj.GetType() != this.GetType()) {
return false;
}
return this.Equals((TextStyle) obj);
}
public override int GetHashCode() {
unchecked {
var hashCode = this.inherit.GetHashCode();
hashCode = (hashCode * 397) ^ (this.color != null ? this.color.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (this.backgroundColor != null ? this.backgroundColor.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ this.fontSize.GetHashCode();
hashCode = (hashCode * 397) ^ (this.fontWeight != null ? this.fontWeight.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ this.fontStyle.GetHashCode();
hashCode = (hashCode * 397) ^ this.letterSpacing.GetHashCode();
hashCode = (hashCode * 397) ^ this.wordSpacing.GetHashCode();
hashCode = (hashCode * 397) ^ this.textBaseline.GetHashCode();
hashCode = (hashCode * 397) ^ this.height.GetHashCode();
hashCode = (hashCode * 397) ^ (this.decoration != null ? this.decoration.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (this.decorationColor != null ? this.decorationColor.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ this.decorationStyle.GetHashCode();
hashCode = (hashCode * 397) ^ this.decorationThickness.GetHashCode();
hashCode = (hashCode * 397) ^ (this.foreground != null ? this.foreground.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (this.background != null ? this.background.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (this.fontFamily != null ? this.fontFamily.GetHashCode() : 0);
hashCode = (hashCode * 397) ^
(this.fontFamilyFallback != null ? this.fontFamilyFallback.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (this.shadows != null ? this.shadows.GetHashCode() : 0);
return hashCode;
}
}
public static bool operator ==(TextStyle left, TextStyle right) {
return Equals(left, right);
}
public static bool operator !=(TextStyle left, TextStyle right) {
return !Equals(left, right);
}
public override string toStringShort() {
return this.GetType().FullName;
}
}
}