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79 行
2.0 KiB

using System;
using Unity.UIWidgets.foundation;
using Unity.UIWidgets.ui;
namespace Unity.UIWidgets.painting {
public abstract class Decoration : Diagnosticable {
protected Decoration() {
}
public override string toStringShort() {
return this.GetType().ToString();
}
public virtual bool debugAssertIsValid() {
return true;
}
public virtual EdgeInsets padding {
get { return EdgeInsets.zero; }
}
public virtual bool isComplex {
get { return false; }
}
public virtual Decoration lerpFrom(Decoration a, float t) {
return null;
}
public virtual Decoration lerpTo(Decoration b, float t) {
return null;
}
public static Decoration lerp(Decoration a, Decoration b, float t) {
if (a == null && b == null) {
return null;
}
if (a == null) {
return b.lerpFrom(null, t) ?? b;
}
if (b == null) {
return a.lerpTo(null, t) ?? a;
}
if (t == 0.0) {
return a;
}
if (t == 1.0) {
return b;
}
return b.lerpFrom(a, t)
?? a.lerpTo(b, t)
?? (t < 0.5 ? (a.lerpTo(null, t * 2.0f) ?? a) : (b.lerpFrom(null, (t - 0.5f) * 2.0f) ?? b));
}
public virtual bool hitTest(Size size, Offset position) {
return true;
}
public abstract BoxPainter createBoxPainter(VoidCallback onChanged = null);
}
public abstract class BoxPainter : IDisposable {
protected BoxPainter(VoidCallback onChanged = null) {
this.onChanged = onChanged;
}
public readonly VoidCallback onChanged;
public abstract void paint(Canvas canvas, Offset offset, ImageConfiguration configuration);
public virtual void Dispose() {
}
}
}