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337 行
15 KiB

using System;
using System.Collections.Generic;
using System.Linq;
using UIWidgets.foundation;
using UIWidgets.painting;
using UIWidgets.ui;
namespace UIWidgets.painting
{
public class TextStyle : Diagnosticable, IEquatable<TextStyle>, ParagraphBuilder.ITextStyleProvider
{
public static readonly double _defaultFontSize = 14.0;
public readonly bool inherit;
public readonly Color color;
public readonly double? fontSize;
public readonly FontWeight? fontWeight;
public readonly FontStyle? fontStyle;
public readonly double? letterSpacing;
public readonly double? wordSpacing;
public readonly TextBaseline? textBaseline;
public readonly double? height;
public readonly TextDecoration decoration;
public readonly Color decorationColor;
public readonly TextDecorationStyle? decorationStyle;
public readonly Paint background;
public readonly string fontFamily;
public readonly string debugLabel;
const string _kDefaultDebugLabel = "unknown";
public TextStyle(bool inherit = true, Color color = null, double? fontSize = null,
FontWeight? fontWeight = null,
FontStyle? fontStyle = null, double? letterSpacing = null, double? wordSpacing = null,
TextBaseline? textBaseline = null, double? height = null, Paint background = null,
TextDecoration decoration = null,
Color decorationColor = null, TextDecorationStyle? decorationStyle = null,
string fontFamily = null, string debugLabel = null)
{
this.inherit = inherit;
this.color = color;
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.fontFamily = fontFamily;
this.debugLabel = debugLabel;
this.background = background;
}
public ui.TextStyle getTextStyle(ui.TextStyle currentStyle = null)
{
if (currentStyle != null)
{
return new ui.TextStyle(
color: color??currentStyle.color,
fontSize: fontSize??currentStyle.fontSize,
fontWeight: fontWeight??currentStyle.fontWeight,
fontStyle: fontStyle??currentStyle.fontStyle,
letterSpacing: letterSpacing??currentStyle.letterSpacing,
wordSpacing: wordSpacing??currentStyle.wordSpacing,
textBaseline: textBaseline??currentStyle.textBaseline,
height: height??currentStyle.height,
decoration: decoration??currentStyle.decoration,
decorationColor: decorationColor??currentStyle.decorationColor,
fontFamily: fontFamily??currentStyle.fontFamily,
background: background??currentStyle.background
);
}
return new ui.TextStyle(
color: color,
fontSize: fontSize,
fontWeight: fontWeight,
fontStyle: fontStyle,
letterSpacing: letterSpacing,
wordSpacing: wordSpacing,
textBaseline: textBaseline,
height: height,
decoration: decoration,
decorationColor: decorationColor,
fontFamily: fontFamily,
background: background
);
}
public RenderComparison compareTo(TextStyle other)
{
if (inherit != other.inherit || fontFamily != other.fontFamily
|| fontSize != other.fontSize || fontWeight != other.fontWeight
|| fontStyle != other.fontStyle || letterSpacing != other.letterSpacing
|| wordSpacing != other.wordSpacing || textBaseline != other.textBaseline
|| height != other.height || background != other.background)
{
return RenderComparison.layout;
}
if (color != other.color || decoration != other.decoration || decorationColor != other.decorationColor
|| decorationStyle != other.decorationStyle)
{
return RenderComparison.paint;
}
return RenderComparison.identical;
}
public ParagraphStyle getParagraphStyle(TextAlign textAlign,
TextDirection textDirection, string ellipsis, int maxLines, double textScaleFactor = 1.0)
{
return new ParagraphStyle(
textAlign, textDirection, fontWeight, fontStyle,
maxLines, (fontSize ?? _defaultFontSize) * textScaleFactor,
fontFamily, height, ellipsis
);
}
public TextStyle merge(TextStyle other)
{
if (other == null)
{
return this;
}
if (!other.inherit)
{
return other;
}
string mergedDebugLabel = null;
D.assert(() =>
{
if (other.debugLabel != null || debugLabel != null)
{
mergedDebugLabel = string.Format("({0}).merge({1})", debugLabel ?? _kDefaultDebugLabel,
other.debugLabel ?? _kDefaultDebugLabel);
}
return true;
});
return copyWith(
color: other.color,
fontFamily: other.fontFamily,
fontSize: other.fontSize,
fontWeight: other.fontWeight,
fontStyle: other.fontStyle,
letterSpacing: other.letterSpacing,
wordSpacing: other.wordSpacing,
textBaseline: other.textBaseline,
height: other.height,
decoration: other.decoration,
decorationColor: other.decorationColor,
decorationStyle: other.decorationStyle,
debugLabel: mergedDebugLabel
);
}
public TextStyle copyWith(Color color,
String fontFamily,
double? fontSize,
FontWeight? fontWeight,
FontStyle? fontStyle,
double? letterSpacing,
double? wordSpacing,
TextBaseline? textBaseline = null,
double? height = null,
Paint background = null,
TextDecoration decoration = null,
Color decorationColor = null,
TextDecorationStyle? decorationStyle = null,
string debugLabel = null)
{
string newDebugLabel = null;
D.assert(() =>
{
if (this.debugLabel != null)
{
newDebugLabel = debugLabel ?? string.Format("({0}).copyWith", this.debugLabel);
}
return true;
});
return new TextStyle(
inherit: inherit,
color: color ?? this.color,
fontFamily: fontFamily ?? this.fontFamily,
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,
background: background ?? this.background,
debugLabel: newDebugLabel
);
}
public override void debugFillProperties(DiagnosticPropertiesBuilder properties)
{
base.debugFillProperties(properties);
List<DiagnosticsNode> styles = new List<DiagnosticsNode>();
styles.Add(new DiagnosticsProperty<Color>("color", color, defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new StringProperty("family", fontFamily, defaultValue: Diagnostics.kNullDefaultValue, quoted: false));
styles.Add(new DiagnosticsProperty<double?>("size", fontSize, defaultValue: Diagnostics.kNullDefaultValue));
string weightDescription = "";
if (fontWeight != null)
{
switch (fontWeight)
{
case FontWeight.w400:
weightDescription = "400";
break;
case FontWeight.w700:
weightDescription = "700";
break;
}
}
styles.Add(new DiagnosticsProperty<FontWeight?>(
"weight",
fontWeight,
description: weightDescription,
defaultValue: Diagnostics.kNullDefaultValue
));
styles.Add(new EnumProperty<FontStyle?>("style", fontStyle, defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new DiagnosticsProperty<double?>("letterSpacing", letterSpacing, defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new DiagnosticsProperty<double?>("wordSpacing", wordSpacing, defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new EnumProperty<TextBaseline?>("baseline", textBaseline, defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new DiagnosticsProperty<double?>("height", height, defaultValue: Diagnostics.kNullDefaultValue));
styles.Add(new StringProperty("background", background == null ? null : background.ToString(), defaultValue: Diagnostics.kNullDefaultValue, quoted: false));
if (decoration != null)
{
List<string> decorationDescription = new List<string>();
if (decorationStyle != null)
{
decorationDescription.Add(decorationStyle.ToString());
}
styles.Add(new DiagnosticsProperty<Color>("decorationColor", decorationColor, defaultValue: Diagnostics.kNullDefaultValue,
level: DiagnosticLevel.fine));
if (decorationColor != null)
{
decorationDescription.Add(decorationColor.ToString());
}
styles.Add(new DiagnosticsProperty<TextDecoration>("decoration", decoration, defaultValue: Diagnostics.kNullDefaultValue,
level: DiagnosticLevel.hidden));
if (decoration != null)
decorationDescription.Add("$decoration");
D.assert(decorationDescription.isNotEmpty);
styles.Add(new MessageProperty("decoration", string.Join(" ", decorationDescription.ToArray())));
}
bool styleSpecified = styles.Any((DiagnosticsNode n) => !n.isFiltered(DiagnosticLevel.info));
properties.add(new DiagnosticsProperty<bool>("inherit", inherit,
level: (!styleSpecified && inherit) ? DiagnosticLevel.fine : DiagnosticLevel.info));
foreach (var style in styles)
{
properties.add(style);
}
if (!styleSpecified)
properties.add(new FlagProperty("inherit", value: 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 inherit == other.inherit && Equals(color, other.color) && fontSize.Equals(other.fontSize) &&
fontWeight == other.fontWeight && fontStyle == other.fontStyle &&
letterSpacing.Equals(other.letterSpacing) && wordSpacing.Equals(other.wordSpacing) &&
textBaseline == other.textBaseline && height.Equals(other.height) &&
Equals(decoration, other.decoration) && Equals(decorationColor, other.decorationColor) &&
decorationStyle == other.decorationStyle && Equals(background, other.background) &&
string.Equals(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 Equals((TextStyle) obj);
}
public override int GetHashCode()
{
unchecked
{
var hashCode = inherit.GetHashCode();
hashCode = (hashCode * 397) ^ (color != null ? color.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ fontSize.GetHashCode();
hashCode = (hashCode * 397) ^ fontWeight.GetHashCode();
hashCode = (hashCode * 397) ^ fontStyle.GetHashCode();
hashCode = (hashCode * 397) ^ letterSpacing.GetHashCode();
hashCode = (hashCode * 397) ^ wordSpacing.GetHashCode();
hashCode = (hashCode * 397) ^ textBaseline.GetHashCode();
hashCode = (hashCode * 397) ^ height.GetHashCode();
hashCode = (hashCode * 397) ^ (decoration != null ? decoration.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (decorationColor != null ? decorationColor.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ decorationStyle.GetHashCode();
hashCode = (hashCode * 397) ^ (background != null ? background.GetHashCode() : 0);
hashCode = (hashCode * 397) ^ (fontFamily != null ? fontFamily.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;
}
}
}