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[Widget] Add Cupertino ActivityIndicator Widget

/main
Json 5 年前
当前提交
b17a4623
共有 4 个文件被更改,包括 143 次插入1 次删除
  1. 1
      Runtime/cupertino/button.cs
  2. 2
      Runtime/cupertino/slider.cs
  3. 130
      Runtime/cupertino/activity_indicator.cs
  4. 11
      Runtime/cupertino/activity_indicator.cs.meta

1
Runtime/cupertino/button.cs


using System;
using RSG;
using Unity.UIWidgets.animation;
using Unity.UIWidgets.foundation;
using Unity.UIWidgets.gestures;

2
Runtime/cupertino/slider.cs


this._divisions = divisions;
this._activeColor = activeColor;
this._onChanged = onChanged;
this.onChangeStart = onChangeStart;
this.onChangeEnd = onChangeEnd;
this._drag = new HorizontalDragGestureRecognizer();
this._drag.onStart = this._handleDragStart;
this._drag.onUpdate = this._handleDragUpdate;

130
Runtime/cupertino/activity_indicator.cs


using System;
using Unity.UIWidgets.animation;
using Unity.UIWidgets.foundation;
using Unity.UIWidgets.ui;
using Unity.UIWidgets.widgets;
using UnityEngine;
using Canvas = Unity.UIWidgets.ui.Canvas;
using Color = Unity.UIWidgets.ui.Color;
namespace Unity.UIWidgets.cupertino {
static class CupertinoActivityIndicatorUtils {
public const float _kDefaultIndicatorRadius = 10.0f;
public const float _kTwoPI = Mathf.PI * 2.0f;
public const int _kTickCount = 12;
public const int _kHalfTickCount = _kTickCount / 2;
public static readonly Color _kTickColor = CupertinoColors.lightBackgroundGray;
public static readonly Color _kActiveTickColor = new Color(0xFF9D9D9D);
}
public class CupertinoActivityIndicator : StatefulWidget {
public CupertinoActivityIndicator(
Key key = null,
bool animating = true,
float radius = CupertinoActivityIndicatorUtils._kDefaultIndicatorRadius
) : base(key: key) {
D.assert(radius > 0);
this.animating = animating;
this.radius = radius;
}
public readonly bool animating;
public readonly float radius;
public override State createState() {
return new _CupertinoActivityIndicatorState();
}
}
class _CupertinoActivityIndicatorState : TickerProviderStateMixin<CupertinoActivityIndicator> {
AnimationController _controller;
public override void initState() {
base.initState();
this._controller = new AnimationController(
duration: TimeSpan.FromSeconds(1),
vsync: this
);
if (this.widget.animating) {
this._controller.repeat();
}
}
public override void didUpdateWidget(StatefulWidget oldWidget) {
base.didUpdateWidget(oldWidget: oldWidget);
if (oldWidget is CupertinoActivityIndicator _oldWidget) {
if (this.widget.animating != _oldWidget.animating) {
if (this.widget.animating) {
this._controller.repeat();
}
else {
this._controller.stop();
}
}
}
}
public override void dispose() {
this._controller.dispose();
base.dispose();
}
public override Widget build(BuildContext context) {
return new SizedBox(
height: this.widget.radius * 2,
width: this.widget.radius * 2,
child: new CustomPaint(
painter: new _CupertinoActivityIndicatorPainter(
position: this._controller,
radius: this.widget.radius
)
)
);
}
}
class _CupertinoActivityIndicatorPainter : AbstractCustomPainter {
public _CupertinoActivityIndicatorPainter(
Animation<float> position,
float radius
) : base(repaint: position) {
this.tickFundamentalRRect = RRect.fromLTRBXY(
left: -radius,
top: 1.0f * radius / CupertinoActivityIndicatorUtils._kDefaultIndicatorRadius,
right: -radius / 2.0f,
bottom: -1.0f * radius / CupertinoActivityIndicatorUtils._kDefaultIndicatorRadius,
radiusX: 1.0f,
radiusY: 1.0f
);
this.position = position;
}
readonly Animation<float> position;
readonly RRect tickFundamentalRRect;
public override void paint(Canvas canvas, Size size) {
Paint paint = new Paint();
canvas.save();
canvas.translate(size.width / 2.0f, size.height / 2.0f);
int activeTick = (CupertinoActivityIndicatorUtils._kTickCount * this.position.value).floor();
for (int i = 0; i < CupertinoActivityIndicatorUtils._kTickCount; ++i) {
float t = (((i + activeTick) % CupertinoActivityIndicatorUtils._kTickCount) /
CupertinoActivityIndicatorUtils._kHalfTickCount).clamp(0, 1);
paint.color = Color.lerp(a: CupertinoActivityIndicatorUtils._kActiveTickColor,
b: CupertinoActivityIndicatorUtils._kTickColor, t: t);
canvas.drawRRect(rect: this.tickFundamentalRRect, paint: paint);
canvas.rotate(-CupertinoActivityIndicatorUtils._kTwoPI / CupertinoActivityIndicatorUtils._kTickCount);
}
canvas.restore();
}
public override bool shouldRepaint(CustomPainter oldPainter) {
return (oldPainter as _CupertinoActivityIndicatorPainter).position != this.position;
}
}
}

11
Runtime/cupertino/activity_indicator.cs.meta


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