using System.Collections.Generic; using Unity.UIWidgets.foundation; using Unity.UIWidgets.painting; using Unity.UIWidgets.rendering; using Unity.UIWidgets.ui; using TextStyle = Unity.UIWidgets.painting.TextStyle; namespace Unity.UIWidgets.widgets { public class DefaultTextStyle : InheritedWidget { public DefaultTextStyle( Key key = null, TextStyle style = null, TextAlign? textAlign = null, bool softWrap = true, TextOverflow overflow = TextOverflow.clip, int? maxLines = null, Widget child = null ) : base(key, child) { D.assert(style != null); D.assert(maxLines == null || maxLines > 0); D.assert(child != null); this.style = style; this.textAlign = textAlign; this.softWrap = softWrap; this.overflow = overflow; this.maxLines = maxLines; } DefaultTextStyle() { this.style = new TextStyle(); this.textAlign = null; this.softWrap = true; this.overflow = TextOverflow.clip; this.maxLines = null; } public static DefaultTextStyle fallback() { return _fallback; } static readonly DefaultTextStyle _fallback = new DefaultTextStyle(); public static Widget merge( Key key = null, TextStyle style = null, TextAlign? textAlign = null, bool? softWrap = null, TextOverflow? overflow = null, int? maxLines = null, Widget child = null ) { D.assert(child != null); return new Builder(builder: (context => { var parent = of(context); return new DefaultTextStyle( key: key, style: parent.style.merge(style), textAlign: textAlign ?? parent.textAlign, softWrap: softWrap ?? parent.softWrap, overflow: overflow ?? parent.overflow, maxLines: maxLines ?? parent.maxLines, child: child ); })); } public readonly TextStyle style; public readonly TextAlign? textAlign; public readonly bool softWrap; public readonly TextOverflow overflow; public readonly int? maxLines; public static DefaultTextStyle of(BuildContext context) { var inherit = (DefaultTextStyle) context.inheritFromWidgetOfExactType(typeof(DefaultTextStyle)); return inherit ?? fallback(); } public override bool updateShouldNotify(InheritedWidget w) { var oldWidget = (DefaultTextStyle) w; return this.style != oldWidget.style || this.textAlign != oldWidget.textAlign || this.softWrap != oldWidget.softWrap || this.overflow != oldWidget.overflow || this.maxLines != oldWidget.maxLines; } public override void debugFillProperties(DiagnosticPropertiesBuilder properties) { base.debugFillProperties(properties); if (this.style != null) { this.style.debugFillProperties(properties); } properties.add(new EnumProperty("textAlign", this.textAlign, defaultValue: Diagnostics.kNullDefaultValue)); properties.add(new FlagProperty("softWrap", value: this.softWrap, ifTrue: "wrapping at box width", ifFalse: "no wrapping except at line break characters", showName: true)); properties.add(new EnumProperty("overflow", this.overflow, defaultValue: Diagnostics.kNullDefaultValue)); properties.add(new IntProperty("maxLines", this.maxLines, defaultValue: Diagnostics.kNullDefaultValue)); } } public class Text : StatelessWidget { public Text(string data, Key key = null, TextStyle style = null, TextAlign? textAlign = null, bool? softWrap = null, TextOverflow? overflow = null, float? textScaleFactor = null, int? maxLines = null) : base(key) { D.assert(data != null); this.textSpan = null; this.data = data; this.style = style; this.textAlign = textAlign; this.softWrap = softWrap; this.overflow = overflow; this.textScaleFactor = textScaleFactor; this.maxLines = maxLines; } Text(TextSpan textSpan, Key key = null, TextStyle style = null, TextAlign? textAlign = null, bool? softWrap = null, TextOverflow? overflow = null, float? textScaleFactor = null, int? maxLines = null) : base(key) { D.assert(textSpan != null); this.textSpan = textSpan; this.data = null; this.style = style; this.textAlign = textAlign; this.softWrap = softWrap; this.overflow = overflow; this.textScaleFactor = textScaleFactor; this.maxLines = maxLines; } public static Text rich(TextSpan textSpan, Key key = null, TextStyle style = null, TextAlign? textAlign = null, bool? softWrap = null, TextOverflow? overflow = null, float? textScaleFactor = null, int? maxLines = null) { return new Text( textSpan, key, style, textAlign, softWrap, overflow, textScaleFactor, maxLines); } public readonly string data; public readonly TextSpan textSpan; public readonly TextStyle style; public readonly TextAlign? textAlign; public readonly bool? softWrap; public readonly TextOverflow? overflow; public readonly float? textScaleFactor; public readonly int? maxLines; public override Widget build(BuildContext context) { DefaultTextStyle defaultTextStyle = DefaultTextStyle.of(context); TextStyle effectiveTextStyle = this.style; if (this.style == null || this.style.inherit) { effectiveTextStyle = defaultTextStyle.style.merge(this.style); } return new RichText( textAlign: this.textAlign ?? defaultTextStyle.textAlign ?? TextAlign.left, softWrap: this.softWrap ?? defaultTextStyle.softWrap, overflow: this.overflow ?? defaultTextStyle.overflow, textScaleFactor: this.textScaleFactor ?? 1.0f, // MediaQuery.textScaleFactorOf(context), todo maxLines: this.maxLines ?? defaultTextStyle.maxLines, text: new TextSpan( style: effectiveTextStyle, text: this.data, children: this.textSpan != null ? new List {this.textSpan} : null ) ); } public override void debugFillProperties(DiagnosticPropertiesBuilder properties) { base.debugFillProperties(properties); properties.add(new StringProperty("data", this.data, showName: false)); if (this.textSpan != null) { properties.add( this.textSpan.toDiagnosticsNode(name: "textSpan", style: DiagnosticsTreeStyle.transition)); } if (this.style != null) { this.style.debugFillProperties(properties); } properties.add(new EnumProperty("textAlign", this.textAlign, defaultValue: Diagnostics.kNullDefaultValue)); properties.add(new FlagProperty("softWrap", value: this.softWrap, ifTrue: "wrapping at box width", ifFalse: "no wrapping except at line break characters", showName: true)); properties.add(new EnumProperty("overflow", this.overflow, defaultValue: Diagnostics.kNullDefaultValue)); properties.add(new FloatProperty("textScaleFactor", this.textScaleFactor, defaultValue: Diagnostics.kNullDefaultValue)); properties.add(new IntProperty("maxLines", this.maxLines, defaultValue: Diagnostics.kNullDefaultValue)); } } }