void _drawButtonBackgroundsAndDividersStacked(Canvas canvas, Offset offset)
{
Offset dividerOffset = new Offset(0.0f, this.dividerThickness);
Path backgroundFillPath = new Path();
// fillType = PathFillType.evenOdd
backgroundFillPath.addRect(Rect.fromLTWH(0.0f, 0.0f, this.size.width, this.size.height));
Path pressedBackgroundFillPath = new Path();
Path dividersPath = new Path();
Offset accumulatingOffset = offset;
RenderBox child = this.firstChild;
RenderBox prevChild = null;
while (child != null)
{
D.assert(child.parentData is _ActionButtonParentData);
_ActionButtonParentData currentButtonParentData = child.parentData as _ActionButtonParentData;
bool isButtonPressed = currentButtonParentData.isPressed;
bool isPrevButtonPressed = false;
if (prevChild != null)
{
D.assert(prevChild.parentData is _ActionButtonParentData);
_ActionButtonParentData previousButtonParentData = prevChild.parentData as _ActionButtonParentData;
isPrevButtonPressed = previousButtonParentData.isPressed;
}
bool isDividerPresent = child != this.firstChild;
bool isDividerPainted = isDividerPresent && !(isButtonPressed || isPrevButtonPressed);
Rect dividerRect = Rect.fromLTWH(
accumulatingOffset.dx,
accumulatingOffset.dy, this.size.width, this._dividerThickness
);
Rect buttonBackgroundRect = Rect.fromLTWH(
accumulatingOffset.dx,
accumulatingOffset.dy + (isDividerPresent ? this.dividerThickness : 0.0f), this.size.width,
child.size.height
);
if (isButtonPressed)
{
backgroundFillPath.addRect(buttonBackgroundRect);
pressedBackgroundFillPath.addRect(buttonBackgroundRect);
}
if (isDividerPainted)
{
backgroundFillPath.addRect(dividerRect);
dividersPath.addRect(dividerRect);
}
accumulatingOffset += (isDividerPresent ? dividerOffset : Offset.zero)
+ new Offset(0.0f, child.size.height);
prevChild = child;
child = this.childAfter(child);
}
canvas.drawPath(backgroundFillPath, this._buttonBackgroundPaint);
canvas.drawPath(pressedBackgroundFillPath, this._pressedButtonBackgroundPaint);
canvas.drawPath(dividersPath, this._dividerPaint);
}
public void visualize(Canvas canvas, Rect rect)
{
Paint paint = new Paint {
color = Colors.blue
};
Paint paint2 = new Paint {
color = Colors.red
};
Paint paint3 = new Paint {
color = Colors.green
};
Paint paint4 = new Paint {
color = Colors.white70
};
float[] costFrames = this._laps;
int curFrame = (this._currentSample - 1) % InstrumentationUtils.kMaxSamples;
float barWidth = Mathf.Max(1, rect.width / costFrames.Length);
float perHeight = rect.height / 32.0f;
canvas.drawRect(rect, paint4);
canvas.drawRect(Rect.fromLTWH(rect.left, rect.top + perHeight * 16.0f, rect.width, 1), paint3);
float cur_x = rect.left;
Path barPath = new Path();
for (var i = 0; i < costFrames.Length; i++)
{
if (costFrames[i] != 0)
{
float curHeight = Mathf.Min(perHeight * costFrames[i] * 1000, rect.height);
Rect barRect = Rect.fromLTWH(cur_x, rect.top + rect.height - curHeight, barWidth, curHeight);
barPath.addRect(barRect);
}
cur_x += barWidth;
}
canvas.drawPath(barPath, paint);
if (curFrame >= 0 && curFrame < costFrames.Length)
{
if (costFrames[curFrame] != 0)
{
float curHeight = Mathf.Min(perHeight * costFrames[curFrame] * 1000, rect.height);
Rect barRect = Rect.fromLTWH(rect.left + barWidth * curFrame, rect.top + rect.height - curHeight,
barWidth, curHeight);
canvas.drawRect(barRect, paint2);
}
var pb = new ParagraphBuilder(new ParagraphStyle {
});
pb.addText("Current Frame Cost: " + costFrames[curFrame] * 1000 + "ms" +
" ; Max(in last 120 frames): " + this.maxDelta() * 1000 + "ms");
var paragraph = pb.build();
paragraph.layout(new ParagraphConstraints(width: 800));
canvas.drawParagraph(paragraph, new Offset(rect.left, rect.top + rect.height - 12));
}
}
void _drawCheck(Canvas canvas, Offset origin, float t, Paint paint)
{
D.assert(t >= 0.0f && t <= 1.0f);
Path path = new Path();
Offset start = new Offset(CheckboxUtils._kEdgeSize * 0.15f, CheckboxUtils._kEdgeSize * 0.45f);
Offset mid = new Offset(CheckboxUtils._kEdgeSize * 0.4f, CheckboxUtils._kEdgeSize * 0.7f);
Offset end = new Offset(CheckboxUtils._kEdgeSize * 0.85f, CheckboxUtils._kEdgeSize * 0.25f);
if (t < 0.5f)
{
float strokeT = t * 2.0f;
Offset drawMid = Offset.lerp(start, mid, strokeT);
path.moveTo(origin.dx + start.dx, origin.dy + start.dy);
path.lineTo(origin.dx + drawMid.dx, origin.dy + drawMid.dy);
}
else
{
float strokeT = (t - 0.5f) * 2.0f;
Offset drawEnd = Offset.lerp(mid, end, strokeT);
path.moveTo(origin.dx + start.dx, origin.dy + start.dy);
path.lineTo(origin.dx + mid.dx, origin.dy + mid.dy);
path.lineTo(origin.dx + drawEnd.dx, origin.dy + drawEnd.dy);
}
canvas.drawPath(path, paint);
}
void paintArrowhead(Canvas canvas, Size size)
{
float arcEnd = this.arcStart + this.arcSweep ?? 0.0f;
float ux = Mathf.Cos(arcEnd);
float uy = Mathf.Sin(arcEnd);
D.assert(size.width == size.height);
float radius = size.width / 2.0f;
float?arrowheadPointX = radius + ux * radius + -uy * this.strokeWidth * 2.0f * this.arrowheadScale;
float?arrowheadPointY = radius + uy * radius + ux * this.strokeWidth * 2.0f * this.arrowheadScale;
float?arrowheadRadius = this.strokeWidth * 1.5f * this.arrowheadScale;
float?innerRadius = radius - arrowheadRadius;
float?outerRadius = radius + arrowheadRadius;
Path path = new Path();
path.moveTo(radius + ux * innerRadius ?? 0.0f, radius + uy * innerRadius ?? 0.0f);
path.lineTo(radius + ux * outerRadius ?? 0.0f, radius + uy * outerRadius ?? 0.0f);
path.lineTo(arrowheadPointX ?? 0.0f, arrowheadPointY ?? 0.0f);
path.close();
Paint paint = new Paint();
paint.color = this.valueColor;
paint.strokeWidth = this.strokeWidth ?? 0.0f;
paint.style = PaintingStyle.fill;
canvas.drawPath(path, paint);
}
void _drawFrameCost(Canvas canvas, float x, float y, float width, float height)
{
Rect visualizationRect = Rect.fromLTWH(x, y, width, height);
Paint paint = new Paint {
color = Colors.blue
};
Paint paint2 = new Paint {
color = Colors.red
};
Paint paint3 = new Paint {
color = Colors.green
};
Paint paint4 = new Paint {
color = Colors.white70
};
float[] costFrames = PerformanceUtils.instance.getFrames();
int curFrame = PerformanceUtils.instance.getCurFrame();
float barWidth = Mathf.Max(1, width / costFrames.Length);
float perHeight = height / 32.0f;
canvas.drawRect(visualizationRect, paint4);
canvas.drawRect(Rect.fromLTWH(x, y + perHeight * 16.0f, width, 1), paint3);
float cur_x = x;
Path barPath = new Path();
for (var i = 0; i < costFrames.Length; i++)
{
if (costFrames[i] != 0)
{
float curHeight = Mathf.Min(perHeight * costFrames[i], height);
Rect barRect = Rect.fromLTWH(cur_x, y + height - curHeight, barWidth, curHeight);
barPath.addRect(barRect);
}
cur_x += barWidth;
}
canvas.drawPath(barPath, paint);
if (curFrame >= 0 && curFrame < costFrames.Length && costFrames[curFrame] != 0)
{
float curHeight = Mathf.Min(perHeight * costFrames[curFrame], height);
Rect barRect = Rect.fromLTWH(x + barWidth * curFrame, y + height - curHeight, barWidth, curHeight);
canvas.drawRect(barRect, paint2);
var pb = new ParagraphBuilder(new ParagraphStyle {
});
pb.addText("Frame Cost: " + costFrames[curFrame] + "ms");
var paragraph = pb.build();
paragraph.layout(new ParagraphConstraints(width: 300));
canvas.drawParagraph(paragraph, new Offset(x, y + height - 12));
}
}
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 void paint(Canvas canvas, Size size)
{
Path path = new Path();
Paint paint = new Paint();
path.moveTo(0, 0);
path.lineTo(0, size.height * 0.75f);
path.quadTo(size.width * 0.1f, size.height * 0.7f, size.width * 0.17f, size.height * 0.9f);
path.quadTo(size.width * 0.2f, size.height, size.width * 0.25f, size.height * 0.9f);
path.quadTo(size.width * 0.4f, size.height * 0.4f, size.width * 0.5f, size.height * 0.7f);
path.quadTo(size.width * 0.6f, size.height * 0.85f, size.width * 0.85f, size.height * 0.65f);
path.quadTo(size.width * 0.7f, size.height * 0.9f, size.width, 0);
path.close();
paint.color = new Color(0xfaff0000);
canvas.drawPath(path, paint);
path = new Path();
path.moveTo(0, 0);
path.lineTo(0, size.height * 0.5f);
path.quadTo(size.width * 0.1f, size.height * 0.8f, size.width * 0.15f, size.height * 0.6f);
path.quadTo(size.width * 0.2f, size.height * 0.45f, size.width * 0.27f, size.height * 0.6f);
path.quadTo(size.width * 0.45f, size.height, size.width * 0.5f, size.height * 0.8f);
path.quadTo(size.width * 0.55f, size.height * 0.45f, size.width * 0.75f, size.height * 0.75f);
path.quadTo(size.width * 0.85f, size.height * 0.93f, size.width, size.height * 0.6f);
path.lineTo(size.width, 0);
path.close();
paint.color = new Color(0xfcff0000);
canvas.drawPath(path, paint);
path = new Path();
path.moveTo(0, 0);
path.lineTo(0, size.height * 0.75f);
path.quadTo(size.width * 0.1f, size.height * 0.55f, size.width * 0.22f, size.height * 0.7f);
path.quadTo(size.width * 0.3f, size.height * 0.9f, size.width * 0.4f, size.height * 0.75f);
path.quadTo(size.width * 0.52f, size.height * 0.5f, size.width * 0.65f, size.height * 0.7f);
path.quadTo(size.width * 0.75f, size.height * 0.85f, size.width, size.height * 0.6f);
path.lineTo(size.width, 0);
path.close();
paint.color = new Color(0xffff0000);
canvas.drawPath(path, paint);
}
public static void _debugDrawDoubleRect(Canvas canvas, Rect outerRect, Rect innerRect, Color color)
{
var path = new Path();
path.fillType = PathFillType.evenOdd;
path.addRect(rect: outerRect);
path.addRect(rect: innerRect);
var paint = new Paint {
color = color
};
canvas.drawPath(path: path, paint: paint);
}
public static void _debugDrawDoubleRect(Canvas canvas, Rect outerRect, Rect innerRect, Color color)
{
Path path = new Path();
path.addRect(outerRect);
path.addRect(innerRect);
path.winding(PathWinding.clockwise);
var paint = new Paint {
color = color
};
canvas.drawPath(path, paint);
}
public override void paint(Canvas canvas, Size size)
{
Paint paint = new Paint();
paint.color = color;
float radius = size.width / 2.0f;
Rect circle = Rect.fromCircle(center: new Offset(radius, radius), radius: radius);
Rect point = Rect.fromLTWH(0.0f, 0.0f, radius, radius);
Path path = new Path();
path.addOval(circle);
path.addRect(point);
canvas.drawPath(path, paint);
}
public override void paint(Canvas canvas, Size size)
{
Paint paint = new Paint();
paint.color = CupertinoTextSelectionUtils._kToolbarBackgroundColor;
paint.style = PaintingStyle.fill;
Path triangle = new Path();
triangle.lineTo(CupertinoTextSelectionUtils._kToolbarTriangleSize.width / 2, 0.0f);
triangle.lineTo(0.0f, CupertinoTextSelectionUtils._kToolbarTriangleSize.height);
triangle.lineTo(-(CupertinoTextSelectionUtils._kToolbarTriangleSize.width / 2), 0.0f);
triangle.close();
canvas.drawPath(triangle, paint);
}
void _debugDrawArrow(Canvas canvas, Paint paint, Offset p0, Offset p1, GrowthDirection direction)
{
D.assert(() => {
if (p0 == p1)
{
return(true);
}
D.assert(p0.dx == p1.dx || p0.dy == p1.dy);
float d = (p1 - p0).distance * 0.2f;
Offset temp;
float dx1 = 0, dx2 = 0, dy1 = 0, dy2 = 0;
switch (direction)
{
case GrowthDirection.forward:
dx1 = dx2 = dy1 = dy2 = d;
break;
case GrowthDirection.reverse:
temp = p0;
p0 = p1;
p1 = temp;
dx1 = dx2 = dy1 = dy2 = -d;
break;
}
if (p0.dx == p1.dx)
{
dx2 = -dx2;
}
else
{
dy2 = -dy2;
}
var path = new Path();
path.moveTo(p0.dx, p0.dy);
path.lineTo(p1.dx, p1.dy);
path.moveTo(p1.dx - dx1, p1.dy - dy1);
path.lineTo(p1.dx, p1.dy);
path.lineTo(p1.dx - dx2, p1.dy - dy2);
canvas.drawPath(
path,
paint
);
return(true);
});
}
void _paintSelection(Canvas canvas, Offset effectiveOffset)
{
D.assert(this._selectionRects != null);
D.assert(this.selectionColor != null);
var paint = new Paint {
color = this.selectionColor
};
Path barPath = new Path();
foreach (var box in this._selectionRects)
{
barPath.addRect(box.toRect().shift(effectiveOffset));
}
canvas.drawPath(barPath, paint);
}
public void paint(Canvas canvas, Color color, _UiPathFactory uiPathFactory, float progress)
{
float opacity = AnimatedIconUtils._interpolate(opacities, progress);
Paint paint = new Paint();
paint.style = PaintingStyle.fill;
paint.color = color.withOpacity(color.opacity * opacity);
Path path = uiPathFactory();
foreach (_PathCommand command in commands)
{
command.apply(path, progress);
}
canvas.drawPath(path, paint);
}
public override void paint(Canvas canvas, Size size)
{
Paint paint = new Paint {
color = CustomTextSelectionControlsUtils._kToolbarBackgroundColor,
style = PaintingStyle.fill
};
float triangleBottomY = this.arrowDirection == _ArrowDirection.down
? 0.0f
: CustomTextSelectionControlsUtils._kToolbarTriangleSize.height;
Path triangle = new Path();
triangle.lineTo(CustomTextSelectionControlsUtils._kToolbarTriangleSize.width / 2, triangleBottomY);
triangle.lineTo(0.0f, CustomTextSelectionControlsUtils._kToolbarTriangleSize.height);
triangle.lineTo(-(CustomTextSelectionControlsUtils._kToolbarTriangleSize.width / 2), triangleBottomY);
triangle.close();
canvas.drawPath(triangle, 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 paint(Canvas canvas, Rect rect)
{
if (rect.isEmpty)
{
return;
}
switch (this.side.style)
{
case BorderStyle.none:
break;
case BorderStyle.solid:
Path path = this.getOuterPath(rect);
Paint paint = this.side.toPaint();
canvas.drawPath(path, paint);
break;
}
}
public override void paint(Canvas canvas, Rect rect)
{
if (rect.isEmpty)
{
return;
}
switch (this.side.style)
{
case BorderStyle.none:
break;
case BorderStyle.solid:
Path path = this.getOuterPath(rect);
path.addPath(this.getInnerPath(rect), Offset.zero);
canvas.drawPath(path, this.side.toPaint());
break;
}
}
public override void paint(Canvas canvas, Rect rect, TextDirection?textDirection = null)
{
if (rect.isEmpty)
{
return;
}
switch (side.style)
{
case BorderStyle.none:
break;
case BorderStyle.solid:
Path path = getOuterPath(rect, textDirection);
path.addPath(getInnerPath(rect, textDirection), Offset.zero);
canvas.drawPath(path, side.toPaint());
break;
}
}
public override void paint(Canvas canvas, Rect rect,
float gapStart,
float gapExtent = 0.0f,
float gapPercentage = 0.0f
) {
D.assert(gapPercentage >= 0.0f && gapPercentage <= 1.0f);
D.assert(_cornersAreCircular(this.borderRadius));
Paint paint = this.borderSide.toPaint();
RRect outer = this.borderRadius.toRRect(rect);
RRect center = outer.deflate(this.borderSide.width / 2.0f);
if (gapExtent <= 0.0f || gapPercentage == 0.0f) {
canvas.drawRRect(center, paint);
}
else {
float extent = MathUtils.lerpFloat(0.0f, gapExtent + this.gapPadding * 2.0f, gapPercentage);
Path path = this._gapBorderPath(canvas, center, Mathf.Max(0.0f,gapStart - this.gapPadding), extent);
canvas.drawPath(path, paint);
}
}
public override void paint(Canvas canvas, Size size)
{
if (NodeGraphData == null || NodeGraphData.allNodes.Count <= 0)
{
return;
}
Vector2 inPortPos = NodeGraphData.allNodes[0].outDataPorts[0].portCenter;
Vector2 outPortPos = NodeGraphData.allNodes[1].inDataPorts[0].portCenter;
Paint bezierPaint = new Paint {
style = PaintingStyle.stroke, color = Colors.yellow, strokeWidth = 4
};
float controlPointOffsetX = Mathf.Abs((inPortPos - outPortPos).x) / 2;
Path bezierPath = new Path();
bezierPath.moveTo(inPortPos.x, inPortPos.y);
bezierPath.bezierTo(inPortPos.x + controlPointOffsetX, inPortPos.y, outPortPos.x - controlPointOffsetX, outPortPos.y, outPortPos.x, outPortPos.y);
canvas.drawPath(bezierPath, bezierPaint);
}
public static void paintZigZag(Canvas canvas, Paint paint, Offset start, Offset end, int zigs, float width)
{
D.assert(MathUtils.isFinite(zigs));
D.assert(zigs > 0);
canvas.save();
canvas.translate(start.dx, start.dy);
end = end - start;
canvas.rotate(Mathf.Atan2(end.dy, end.dx));
float length = end.distance;
float spacing = length / (zigs * 2.0f);
Path path = new Path();
path.moveTo(0.0f, 0.0f);
for (int index = 0; index < zigs; index += 1)
{
float x = (index * 2.0f + 1.0f) * spacing;
float y = width * ((index % 2.0f) * 2.0f - 1.0f);
path.lineTo(x, y);
}
path.lineTo(length, 0.0f);
canvas.drawPath(path, paint);
canvas.restore();
}
public override void paint(Canvas canvas, Size size)
{
float halfStrokeWidth = 1.0f;
Paint paint = new Paint();
paint.color = color;
Rect circle = Rect.fromCircle(
center: new Offset(CupertinoTextSelectionUtils._kSelectionHandleRadius, CupertinoTextSelectionUtils._kSelectionHandleRadius),
radius: CupertinoTextSelectionUtils._kSelectionHandleRadius
);
Rect line = Rect.fromPoints(
new Offset(
CupertinoTextSelectionUtils._kSelectionHandleRadius - halfStrokeWidth,
2 * CupertinoTextSelectionUtils._kSelectionHandleRadius - CupertinoTextSelectionUtils._kSelectionHandleOverlap
),
new Offset(CupertinoTextSelectionUtils._kSelectionHandleRadius + halfStrokeWidth, size.height)
);
Path path = new Path();
path.addOval(circle);
// Draw line so it slightly overlaps the circle.
path.addRect(line);
canvas.drawPath(path, 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 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)
});
}
public override void paint(Canvas canvas, Size size)
{
var paint = new Paint()
{
color = new Color(0xFFFF0000),
};
paint.color = Colors.yellow;
paint.style = PaintingStyle.stroke;
paint.strokeWidth = 3;
var startPoint = new Offset(0, size.height / 6);
var controlPoint1 = new Offset(size.width / 4, 0);
var controlPoint2 = new Offset(3 * size.width / 4, 0);
var endPoint = new Offset(size.width, size.height / 6);
var path = new Path();
path.moveTo(startPoint.dx, startPoint.dy);
path.cubicTo(
controlPoint1.dx, controlPoint1.dy,
controlPoint2.dx, controlPoint2.dy,
endPoint.dx, endPoint.dy
);
path.moveTo(10, 10);
path.lineTo(90, 10);
path.lineTo(10, 90);
path.lineTo(90, 90);
path.winding(PathWinding.clockwise);
path.close();
path.moveTo(110, 10);
path.lineTo(190, 10);
path.lineTo(110, 90);
path.lineTo(190, 90);
path.close();
path.addRect(UIWidgetRect.fromLTWH(10, 25, 180, 50));
path.addRect(UIWidgetRect.fromLTWH(200, 0, 100, 100));
path.addRRect(RRect.fromRectAndRadius(UIWidgetRect.fromLTWH(225, 25, 50, 50), 10));
path.winding(PathWinding.clockwise);
path.addOval(UIWidgetRect.fromLTWH(200, 50, 100, 100));
path.winding(PathWinding.clockwise);
canvas.drawPath(path, paint);
paint = new Paint {
color = new Color(0xFFFF0000),
shader = Gradient.linear(
new Offset(0, 0),
new Offset(size.width, 200),
new List <Color>()
{
Colors.red, Colors.black, Colors.green
}, null, TileMode.clamp),
};
canvas.translate(0, 200);
canvas.drawPath(path, paint);
canvas.translate(0, 200);
// paint.maskFilter = MaskFilter.blur(BlurStyle.normal, 5);
paint.shader = new ImageShader(new Image(texture6, true), TileMode.mirror);
canvas.drawPath(path, paint);
canvas.translate(0, 200);
paint = new Paint {
color = new Color(0xFF00FF00),
shader = Gradient.sweep(
new Offset(size.width / 2, 100),
new List <Color>()
{
Colors.red, Colors.black, Colors.green, Colors.red,
}, null, TileMode.clamp, 0 * Mathf.PI / 180, 360 * Mathf.PI / 180),
};
canvas.drawPath(path, paint);
paint.shader = Gradient.radial(
new Offset(size.width / 2, 100), 200f,
new List <Color>()
{
Colors.red, Colors.black, Colors.green
}, null, TileMode.clamp);
canvas.translate(0, 200);
canvas.drawPath(path, paint);
}
public static void paintBorder(Canvas canvas, Rect rect,
BorderSide top = null,
BorderSide right = null,
BorderSide bottom = null,
BorderSide left = null
)
{
D.assert(canvas != null);
D.assert(rect != null);
top = top ?? BorderSide.none;
right = right ?? BorderSide.none;
bottom = bottom ?? BorderSide.none;
left = left ?? BorderSide.none;
switch (top.style)
{
case BorderStyle.solid:
Paint paint = new Paint {
strokeWidth = 0.0f,
color = top.color,
};
Path path = new Path();
path.moveTo(rect.left, rect.top);
path.lineTo(rect.right, rect.top);
if (top.width == 0.0f)
{
paint.style = PaintingStyle.stroke;
}
else
{
paint.style = PaintingStyle.fill;
path.lineTo(rect.right - right.width, rect.top + top.width);
path.lineTo(rect.left + left.width, rect.top + top.width);
}
canvas.drawPath(path, paint);
break;
case BorderStyle.none:
break;
}
switch (right.style)
{
case BorderStyle.solid:
Paint paint = new Paint {
strokeWidth = 0.0f,
color = right.color,
};
Path path = new Path();
path.moveTo(rect.right, rect.top);
path.lineTo(rect.right, rect.bottom);
if (right.width == 0.0)
{
paint.style = PaintingStyle.stroke;
}
else
{
paint.style = PaintingStyle.fill;
path.lineTo(rect.right - right.width, rect.bottom - bottom.width);
path.lineTo(rect.right - right.width, rect.top + top.width);
}
canvas.drawPath(path, paint);
break;
case BorderStyle.none:
break;
}
switch (bottom.style)
{
case BorderStyle.solid:
Paint paint = new Paint {
strokeWidth = 0.0f,
color = bottom.color,
};
Path path = new Path();
path.moveTo(rect.right, rect.bottom);
path.lineTo(rect.left, rect.bottom);
if (bottom.width == 0.0)
{
paint.style = PaintingStyle.stroke;
}
else
{
paint.style = PaintingStyle.fill;
path.lineTo(rect.left + left.width, rect.bottom - bottom.width);
path.lineTo(rect.right - right.width, rect.bottom - bottom.width);
}
canvas.drawPath(path, paint);
break;
case BorderStyle.none:
break;
}
switch (left.style)
{
case BorderStyle.solid:
Paint paint = new Paint {
strokeWidth = 0.0f,
color = left.color,
};
Path path = new Path();
path.moveTo(rect.left, rect.bottom);
path.lineTo(rect.left, rect.top);
if (left.width == 0.0f)
{
paint.style = PaintingStyle.stroke;
}
else
{
paint.style = PaintingStyle.fill;
path.lineTo(rect.left + left.width, rect.top + top.width);
path.lineTo(rect.left + left.width, rect.bottom - bottom.width);
}
canvas.drawPath(path, paint);
break;
case BorderStyle.none:
break;
}
}
void _drawValueIndicator(
RenderBox parentBox,
Canvas canvas,
Offset center,
Paint paint,
float scale,
TextPainter labelPainter
)
{
canvas.save();
canvas.translate(center.dx, center.dy);
float textScaleFactor = labelPainter.height / _labelTextDesignSize;
float overallScale = scale * textScaleFactor;
canvas.scale(overallScale, overallScale);
float inverseTextScale = textScaleFactor != 0 ? 1.0f / textScaleFactor : 0.0f;
float labelHalfWidth = labelPainter.width / 2.0f;
float halfWidthNeeded = Mathf.Max(
0.0f,
inverseTextScale * labelHalfWidth - (_topLobeRadius - _labelPadding)
);
float shift = this._getIdealOffset(parentBox, halfWidthNeeded, overallScale, center);
float leftWidthNeeded;
float rightWidthNeeded;
if (shift < 0.0)
{
shift = Mathf.Max(shift, -halfWidthNeeded);
}
else
{
shift = Mathf.Min(shift, halfWidthNeeded);
}
rightWidthNeeded = halfWidthNeeded + shift;
leftWidthNeeded = halfWidthNeeded - shift;
Path path = new Path();
Offset bottomLobeEnd = this._addBottomLobe(path);
float neckTriangleBase = _topNeckRadius - bottomLobeEnd.dx;
float leftAmount = Mathf.Max(0.0f, Mathf.Min(1.0f, leftWidthNeeded / neckTriangleBase));
float rightAmount = Mathf.Max(0.0f, Mathf.Min(1.0f, rightWidthNeeded / neckTriangleBase));
float leftTheta = (1.0f - leftAmount) * _thirtyDegrees;
float rightTheta = (1.0f - rightAmount) * _thirtyDegrees;
Offset neckLeftCenter = new Offset(
-neckTriangleBase,
_topLobeCenter.dy + Mathf.Cos(leftTheta) * _neckTriangleHypotenuse
);
Offset neckRightCenter = new Offset(
neckTriangleBase,
_topLobeCenter.dy + Mathf.Cos(rightTheta) * _neckTriangleHypotenuse
);
float leftNeckArcAngle = _ninetyDegrees - leftTheta;
float rightNeckArcAngle = Mathf.PI + _ninetyDegrees - rightTheta;
float neckStretchBaseline = bottomLobeEnd.dy - Mathf.Max(neckLeftCenter.dy, neckRightCenter.dy);
float t = Mathf.Pow(inverseTextScale, 3.0f);
float stretch = (neckStretchBaseline * t).clamp(0.0f, 10.0f * neckStretchBaseline);
Offset neckStretch = new Offset(0.0f, neckStretchBaseline - stretch);
D.assert(() => {
if (!_debuggingLabelLocation)
{
return(true);
}
#pragma warning disable 0162
Offset leftCenter = _topLobeCenter - new Offset(leftWidthNeeded, 0.0f) + neckStretch;
Offset rightCenter = _topLobeCenter + new Offset(rightWidthNeeded, 0.0f) + neckStretch;
Rect valueRect = Rect.fromLTRB(
leftCenter.dx - _topLobeRadius,
leftCenter.dy - _topLobeRadius,
rightCenter.dx + _topLobeRadius,
rightCenter.dy + _topLobeRadius
);
Paint outlinePaint = new Paint();
outlinePaint.color = new Color(0xffff0000);
outlinePaint.style = PaintingStyle.stroke;
outlinePaint.strokeWidth = 1.0f;
canvas.drawRect(valueRect, outlinePaint);
return(true);
#pragma warning restore 0162
});
_addArc(
path,
neckLeftCenter + neckStretch,
_topNeckRadius,
0.0f,
-leftNeckArcAngle
);
_addArc(
path,
_topLobeCenter - new Offset(leftWidthNeeded, 0.0f) + neckStretch,
_topLobeRadius,
_ninetyDegrees + leftTheta,
_twoSeventyDegrees
);
_addArc(
path,
_topLobeCenter + new Offset(rightWidthNeeded, 0.0f) + neckStretch,
_topLobeRadius,
_twoSeventyDegrees,
_twoSeventyDegrees + Mathf.PI - rightTheta
);
_addArc(
path,
neckRightCenter + neckStretch,
_topNeckRadius,
rightNeckArcAngle,
Mathf.PI
);
canvas.drawPath(path, paint);
canvas.save();
canvas.translate(shift, -_distanceBetweenTopBottomCenters + neckStretch.dy);
canvas.scale(inverseTextScale, inverseTextScale);
labelPainter.paint(canvas, Offset.zero - new Offset(labelHalfWidth, labelPainter.height / 2.0f));
canvas.restore();
canvas.restore();
}