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