public override void paint(Canvas canvas, Rect rect, TextDirection?textDirection = null)
{
switch (side.style)
{
case BorderStyle.none:
break;
case BorderStyle.solid:
float width = side.width;
if (width == 0.0)
{
canvas.drawRRect(borderRadius.resolve(textDirection).toRRect(rect), side.toPaint());
}
else
{
RRect outer = borderRadius.resolve(textDirection).toRRect(rect);
RRect inner = outer.deflate(width);
Paint paint = new Paint {
color = side.color,
};
canvas.drawDRRect(outer, inner, paint);
}
break;
}
}
void _drawBorder(Canvas canvas, RRect outer, float t, Paint paint)
{
D.assert(t >= 0.0f && t <= 0.5f);
float size = outer.width;
RRect inner = outer.deflate(Mathf.Min(size / 2.0f, CheckboxUtils._kStrokeWidth + size * t));
canvas.drawDRRect(outer, inner, paint);
}
public override void paint(PaintingContext context, Offset offset)
{
Canvas canvas = context.canvas;
float currentValue = this._position.value;
float currentReactionValue = this._reaction.value;
float visualPosition = 0f;
switch (this.textDirection)
{
case TextDirection.rtl:
visualPosition = 1.0f - currentValue;
break;
case TextDirection.ltr:
visualPosition = currentValue;
break;
}
Color trackColor = this._value ? this.activeColor : CupertinoSwitchUtils._kTrackColor;
float borderThickness =
1.5f + (CupertinoSwitchUtils._kTrackRadius - 1.5f) * Mathf.Max(currentReactionValue, currentValue);
Paint paint = new Paint();
paint.color = trackColor;
Rect trackRect = Rect.fromLTWH(
offset.dx + (this.size.width - CupertinoSwitchUtils._kTrackWidth) / 2.0f,
offset.dy + (this.size.height - CupertinoSwitchUtils._kTrackHeight) / 2.0f,
CupertinoSwitchUtils._kTrackWidth,
CupertinoSwitchUtils._kTrackHeight
);
RRect outerRRect = RRect.fromRectAndRadius(trackRect, Radius.circular(CupertinoSwitchUtils
._kTrackRadius));
RRect innerRRect = RRect.fromRectAndRadius(trackRect.deflate(borderThickness), Radius.circular
(CupertinoSwitchUtils._kTrackRadius));
canvas.drawDRRect(outerRRect, innerRRect, paint);
float currentThumbExtension = CupertinoThumbPainter.extension * currentReactionValue;
float thumbLeft = MathUtils.lerpFloat(
trackRect.left + CupertinoSwitchUtils._kTrackInnerStart - CupertinoThumbPainter.radius,
trackRect.left + CupertinoSwitchUtils._kTrackInnerEnd - CupertinoThumbPainter.radius -
currentThumbExtension,
visualPosition
);
float thumbRight = MathUtils.lerpFloat(
trackRect.left + CupertinoSwitchUtils._kTrackInnerStart + CupertinoThumbPainter.radius +
currentThumbExtension,
trackRect.left + CupertinoSwitchUtils._kTrackInnerEnd + CupertinoThumbPainter.radius,
visualPosition
);
float thumbCenterY = offset.dy + this.size.height / 2.0f;
this._thumbPainter.paint(canvas, Rect.fromLTRB(
thumbLeft,
thumbCenterY - CupertinoThumbPainter.radius,
thumbRight,
thumbCenterY + CupertinoThumbPainter.radius
));
}