public override void paint(
PaintingContext context,
Offset center,
Animation <float> activationAnimation = null,
Animation <float> enableAnimation = null,
bool isDiscrete = false,
bool isEnabled = false,
bool?isOnTop = null,
TextDirection?textDirection = null,
SliderThemeData sliderTheme = null,
Thumb?thumb = null
)
{
Canvas canvas = context.canvas;
ColorTween colorTween = new ColorTween(
begin: sliderTheme.disabledThumbColor,
end: sliderTheme.thumbColor
);
float size = _thumbSize * sizeTween.evaluate(enableAnimation);
Path thumbPath = null;
switch (textDirection)
{
case TextDirection.rtl:
switch (thumb)
{
case Thumb.start:
thumbPath = SliderDemoUtils._rightTriangle(size, center);
break;
case Thumb.end:
thumbPath = SliderDemoUtils._leftTriangle(size, center);
break;
}
break;
case TextDirection.ltr:
switch (thumb)
{
case Thumb.start:
thumbPath = SliderDemoUtils._leftTriangle(size, center);
break;
case Thumb.end:
thumbPath = SliderDemoUtils._rightTriangle(size, center);
break;
}
break;
}
canvas.drawPath(thumbPath, new Paint {
color = colorTween.evaluate(enableAnimation)
});
}
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(
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 colorTween = new ColorTween(
begin: sliderTheme.disabledThumbColor,
end: sliderTheme.thumbColor
);
float size = _thumbSize * sizeTween.evaluate(enableAnimation);
Path thumbPath = SliderDemoUtils._downTriangle(size, center);
canvas.drawPath(thumbPath, new Paint {
color = colorTween.evaluate(enableAnimation)
});
}
