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187 行
7.5 KiB

using Unity.UIWidgets.foundation;
using Unity.UIWidgets.painting;
using Unity.UIWidgets.rendering;
using Unity.UIWidgets.ui;
namespace Unity.UIWidgets.widgets {
public class DecoratedBox : SingleChildRenderObjectWidget {
public DecoratedBox(
Key key = null,
Decoration decoration = null,
DecorationPosition position = DecorationPosition.background,
Widget child = null
) : base(key, child) {
D.assert(decoration != null);
this.position = position;
this.decoration = decoration;
}
public readonly Decoration decoration;
public readonly DecorationPosition position;
public override RenderObject createRenderObject(BuildContext context) {
return new RenderDecoratedBox(
decoration: this.decoration,
position: this.position,
configuration: ImageUtils.createLocalImageConfiguration(context)
);
}
public override void updateRenderObject(BuildContext context, RenderObject renderObjectRaw) {
var renderObject = (RenderDecoratedBox) renderObjectRaw;
renderObject.decoration = this.decoration;
renderObject.configuration = ImageUtils.createLocalImageConfiguration(context);
renderObject.position = this.position;
}
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
base.debugFillProperties(properties);
string label = "decoration";
switch (this.position) {
case DecorationPosition.background:
label = "bg";
break;
case DecorationPosition.foreground:
label = "fg";
break;
}
properties.add(new EnumProperty<DecorationPosition>(
"position", this.position, level: DiagnosticLevel.hidden));
properties.add(new DiagnosticsProperty<Decoration>(
label,
this.decoration,
ifNull: "no decoration",
showName: this.decoration != null
));
}
}
public class Container : StatelessWidget {
public Container(
Key key = null,
Alignment alignment = null,
EdgeInsets padding = null,
Color color = null,
Decoration decoration = null,
Decoration forgroundDecoration = null,
float? width = null,
float? height = null,
BoxConstraints constraints = null,
EdgeInsets margin = null,
Matrix3 transfrom = null,
Widget child = null
) : base(key) {
D.assert(margin == null || margin.isNonNegative);
D.assert(padding == null || padding.isNonNegative);
D.assert(decoration == null || decoration.debugAssertIsValid());
D.assert(constraints == null || constraints.debugAssertIsValid());
D.assert(color == null || decoration == null,
() => "Cannot provide both a color and a decoration\n" +
"The color argument is just a shorthand for \"decoration: new BoxDecoration(color: color)\"."
);
this.alignment = alignment;
this.padding = padding;
this.foregroundDecoration = forgroundDecoration;
this.margin = margin;
this.transform = transfrom;
this.child = child;
this.decoration = decoration ?? (color != null ? new BoxDecoration(color) : null);
this.constraints = (width != null || height != null)
? (constraints != null ? constraints.tighten(width, height) : BoxConstraints.tightFor(width, height))
: constraints;
}
public readonly Widget child;
public readonly Alignment alignment;
public readonly EdgeInsets padding;
public readonly Decoration decoration;
public readonly Decoration foregroundDecoration;
public readonly BoxConstraints constraints;
public readonly EdgeInsets margin;
public readonly Matrix3 transform;
EdgeInsets _paddingIncludingDecoration {
get {
if (this.decoration == null || this.decoration.padding == null) {
return this.padding;
}
EdgeInsets decorationPadding = this.decoration.padding;
if (this.padding == null) {
return decorationPadding;
}
return this.padding.add(decorationPadding);
}
}
public override Widget build(BuildContext context) {
Widget current = this.child;
if (this.child == null && (this.constraints == null || !this.constraints.isTight)) {
current = new LimitedBox(
maxWidth: 0.0f,
maxHeight: 0.0f,
child: new ConstrainedBox(constraints: BoxConstraints.expand())
);
}
if (this.alignment != null) {
current = new Align(alignment: this.alignment, child: current);
}
EdgeInsets effetivePadding = this._paddingIncludingDecoration;
if (effetivePadding != null) {
current = new Padding(padding: effetivePadding, child: current);
}
if (this.decoration != null) {
current = new DecoratedBox(decoration: this.decoration, child: current);
}
if (this.foregroundDecoration != null) {
current = new DecoratedBox(
decoration: this.foregroundDecoration,
position: DecorationPosition.foreground,
child: current
);
}
if (this.constraints != null) {
current = new ConstrainedBox(constraints: this.constraints, child: current);
}
if (this.margin != null) {
current = new Padding(padding: this.margin, child: current);
}
if (this.transform != null) {
current = new Transform(transform: new Matrix3(this.transform), child: current);
}
return current;
}
public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
base.debugFillProperties(properties);
properties.add(new DiagnosticsProperty<Alignment>("alignment",
this.alignment, showName: false, defaultValue: Diagnostics.kNullDefaultValue));
properties.add(new DiagnosticsProperty<EdgeInsets>("padding",
this.padding, defaultValue: Diagnostics.kNullDefaultValue));
properties.add(new DiagnosticsProperty<Decoration>("bg",
this.decoration, defaultValue: Diagnostics.kNullDefaultValue));
properties.add(new DiagnosticsProperty<Decoration>("fg",
this.foregroundDecoration, defaultValue: Diagnostics.kNullDefaultValue));
properties.add(new DiagnosticsProperty<BoxConstraints>("constraints",
this.constraints, defaultValue: Diagnostics.kNullDefaultValue));
properties.add(new DiagnosticsProperty<EdgeInsets>("margin",
this.margin, defaultValue: Diagnostics.kNullDefaultValue));
properties.add(ObjectFlagProperty<Matrix3>.has("transform",
this.transform));
}
}
}