void _drawDash(Canvas canvas, Offset origin, float t, Paint paint)
{
D.assert(t >= 0.0f && t <= 1.0f);
Offset start = new Offset(CheckboxUtils._kEdgeSize * 0.2f, CheckboxUtils._kEdgeSize * 0.5f);
Offset mid = new Offset(CheckboxUtils._kEdgeSize * 0.5f, CheckboxUtils._kEdgeSize * 0.5f);
Offset end = new Offset(CheckboxUtils._kEdgeSize * 0.8f, CheckboxUtils._kEdgeSize * 0.5f);
Offset drawStart = Offset.lerp(start, mid, 1.0f - t);
Offset drawEnd = Offset.lerp(mid, end, t);
canvas.drawLine(origin + drawStart, origin + drawEnd, paint);
}
public override void paint(Canvas canvas, Rect rect,
float gapStart,
float gapExtent = 0.0f,
float gapPercentage = 0.0f
) {
if (this.borderRadius.bottomLeft != Radius.zero || this.borderRadius.bottomRight != Radius.zero) {
canvas.clipPath(this.getOuterPath(rect));
}
canvas.drawLine(rect.bottomLeft, rect.bottomRight, this.borderSide.toPaint());
}
public override void paint(Canvas canvas, Size size)
{
Paint paint = new Paint {
color = CustomTextSelectionControlsUtils._kHandlesColor,
strokeWidth = 2.0f
};
canvas.drawCircle(this.origin.translate(0.0f, 6.0f), 5.5f, paint);
canvas.drawLine(
this.origin,
this.origin.translate(
0.0f,
-(size.height - 2.0f * CustomTextSelectionControlsUtils._kHandlesPadding)
),
paint
);
}
public override void paint(Canvas canvas, Size size)
{
Paint paint = new Paint();
paint.color = CupertinoTextSelectionUtils._kHandlesColor;
paint.strokeWidth = 2.0f;
canvas.drawCircle(this.origin.translate(0.0f, 4.0f), 5.5f, paint);
canvas.drawLine(
this.origin,
this.origin.translate(
0.0f,
-(size.height - 2.0f * CupertinoTextSelectionUtils._kHandlesPadding)
),
paint
);
}
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 debugPaint(PaintingContext context, Offset offset)
{
D.assert(() => {
if (D.debugPaintSizeEnabled)
{
float strokeWidth = Mathf.Min(4.0f, geometry.paintExtent / 30.0f);
Paint paint = new Paint();
paint.color = new Color(0xFF33CC33);
paint.strokeWidth = strokeWidth;
paint.style = PaintingStyle.stroke;
paint.maskFilter = MaskFilter.blur(BlurStyle.solid, strokeWidth);
float arrowExtent = geometry.paintExtent;
float padding = Mathf.Max(2.0f, strokeWidth);
Canvas canvas = context.canvas;
canvas.drawCircle(
offset.translate(padding, padding),
padding * 0.5f,
paint
);
switch (constraints.axis)
{
case Axis.vertical:
canvas.drawLine(
offset,
offset.translate(constraints.crossAxisExtent, 0.0f),
paint
);
_debugDrawArrow(
canvas,
paint,
offset.translate(constraints.crossAxisExtent * 1.0f / 4.0f, padding),
offset.translate(constraints.crossAxisExtent * 1.0f / 4.0f,
(arrowExtent - padding)),
constraints.normalizedGrowthDirection
);
_debugDrawArrow(
canvas,
paint,
offset.translate(constraints.crossAxisExtent * 3.0f / 4.0f, padding),
offset.translate(constraints.crossAxisExtent * 3.0f / 4.0f,
(arrowExtent - padding)),
constraints.normalizedGrowthDirection
);
break;
case Axis.horizontal:
canvas.drawLine(
offset,
offset.translate(0.0f, constraints.crossAxisExtent),
paint
);
_debugDrawArrow(
canvas,
paint,
offset.translate(padding, constraints.crossAxisExtent * 1.0f / 4.0f),
offset.translate((arrowExtent - padding),
constraints.crossAxisExtent * 1.0f / 4.0f),
constraints.normalizedGrowthDirection
);
_debugDrawArrow(
canvas,
paint,
offset.translate(padding, constraints.crossAxisExtent * 3.0f / 4.0f),
offset.translate((arrowExtent - padding),
constraints.crossAxisExtent * 3.0f / 4.0f),
constraints.normalizedGrowthDirection
);
break;
}
}
return(true);
});
}
