public override void paint(
PaintingContext context,
Offset center,
Animation <float> activationAnimation = null,
Animation <float> enableAnimation = null,
bool?isDiscrete = null,
TextPainter labelPainter = null,
RenderBox parentBox = null,
SliderThemeData sliderTheme = null,
float?value = null
)
{
Canvas canvas = context.canvas;
FloatTween radiusTween = new FloatTween(
begin: 0.0f,
end: this.overlayRadius
);
canvas.drawCircle(
center,
radiusTween.evaluate(activationAnimation),
new Paint {
color = sliderTheme.overlayColor
}
);
}
public override Widget build(BuildContext context)
{
ShapeBorder shape = _border.evaluate(animation);
float elevation = _elevation.evaluate(animation);
return(new PhysicalShape(
child: new _ShapeBorderPaint(
child: widget.child,
shape: shape,
borderOnForeground: widget.borderOnForeground),
clipper: new ShapeBorderClipper(
shape: shape),
clipBehavior: widget.clipBehavior,
elevation: _elevation.evaluate(animation),
color: ElevationOverlay.applyOverlay(context, widget.color, elevation),
shadowColor: _shadowColor.evaluate(animation)
));
}
public override Widget build(BuildContext context)
{
return(new PhysicalModel(
child: widget.child,
shape: widget.shape,
clipBehavior: widget.clipBehavior,
borderRadius: _borderRadius.evaluate(animation),
elevation: _elevation.evaluate(animation),
color: widget.animateColor ? _color.evaluate(animation) : widget.color,
shadowColor: widget.animateShadowColor
? _shadowColor.evaluate(animation)
: widget.shadowColor));
}
public override void paint(
PaintingContext context,
Offset center,
Animation <float> activationAnimation = null,
Animation <float> enableAnimation = null,
bool isDiscrete = false,
TextPainter labelPainter = null,
RenderBox parentBox = null,
SliderThemeData sliderTheme = null,
TextDirection?textDirection = null,
float?value = null)
{
Canvas canvas = context.canvas;
ColorTween enableColor = new ColorTween(
begin: sliderTheme.disabledThumbColor,
end: sliderTheme.valueIndicatorColor
);
Tween <float> slideUpTween = new FloatTween(
begin: 0.0f,
end: _slideUpHeight
);
float size = _indicatorSize * sizeTween.evaluate(enableAnimation);
Offset slideUpOffset = new Offset(0.0f, -slideUpTween.evaluate(activationAnimation));
Path thumbPath = SliderDemoUtils._upTriangle(size, center + slideUpOffset);
Color paintColor = enableColor.evaluate(enableAnimation)
.withAlpha((255.0f * activationAnimation.value).round());
canvas.drawPath(
thumbPath,
new Paint {
color = paintColor
}
);
canvas.drawLine(
center,
center + slideUpOffset,
new Paint
{
color = paintColor,
style = PaintingStyle.stroke,
strokeWidth = 2.0f
});
labelPainter.paint(canvas,
center + slideUpOffset + new Offset(-labelPainter.width / 2.0f, -labelPainter.height - 4.0f));
}
public override void paint(Canvas canvas, Size size)
{
float selectedItemOffset = getSelectedItemOffset();
FloatTween top = new FloatTween(
begin: selectedItemOffset.clamp(0.0f, size.height - material_._kMenuItemHeight),
end: 0.0f
);
FloatTween bottom = new FloatTween(
begin: (top.begin + material_._kMenuItemHeight).clamp(material_._kMenuItemHeight,
size.height),
end: size.height
);
Rect rect = Rect.fromLTRB(0.0f, top.evaluate(resize), size.width, bottom.evaluate(resize));
_painter.paint(canvas, rect.topLeft, new ImageConfiguration(size: rect.size));
}
public override void paint(Canvas canvas, Size size)
{
float selectedItemOffset = this.selectedIndex ?? 0 * DropdownConstants._kMenuItemHeight +
Constants.kMaterialListPadding.top;
FloatTween top = new FloatTween(
begin: selectedItemOffset.clamp(0.0f, size.height - DropdownConstants._kMenuItemHeight),
end: 0.0f
);
FloatTween bottom = new FloatTween(
begin: (top.begin + DropdownConstants._kMenuItemHeight).clamp(DropdownConstants._kMenuItemHeight,
size.height),
end: size.height
);
Rect rect = Rect.fromLTRB(0.0f, top.evaluate(this.resize), size.width, bottom.evaluate(this.resize));
this._painter.paint(canvas, rect.topLeft, new ImageConfiguration(size: rect.size));
}
public override void paint(Canvas canvas, Size size)
{
foreach (_Circle circle in this.circles)
{
Paint paint = new Paint();
paint.color = circle.color;
Rect rect = Rect.fromLTWH(0.0f, 0.0f, size.width, size.height);
canvas.clipRect(rect);
float leftFraction = circle.horizontalLeadingOffset;
Offset center = new Offset(leftFraction * size.width, size.height / 2.0f);
FloatTween radiusTween = new FloatTween(
begin: 0.0f,
end: _maxRadius(center, size)
);
canvas.drawCircle(
center,
radiusTween.evaluate(circle.animation),
paint
);
}
}
