void _paintChild(PaintingContext context, Offset offset, RenderBox child, int childIndex)
{
D.assert(child != null);
_SegmentedControlContainerBoxParentData childParentData = child.parentData as _SegmentedControlContainerBoxParentData;
context.canvas.drawRRect(
childParentData.surroundingRect.shift(offset),
new Paint()
{
color = backgroundColors[childIndex],
style = PaintingStyle.fill
}
);
context.canvas.drawRRect(
childParentData.surroundingRect.shift(offset),
new Paint()
{
color = borderColor,
strokeWidth = 1.0f,
style = PaintingStyle.stroke
}
);
context.paintChild(child, childParentData.offset + offset);
}
void _layoutRects(_NextChild nextChild, RenderBox leftChild, RenderBox rightChild)
{
RenderBox child = leftChild;
float start = 0.0f;
while (child != null)
{
_SegmentedControlContainerBoxParentData childParentData = child.parentData as _SegmentedControlContainerBoxParentData;
Offset childOffset = new Offset(start, 0.0f);
childParentData.offset = childOffset;
Rect childRect = Rect.fromLTWH(start, 0.0f, child.size.width, child.size.height);
RRect rChildRect = null;
if (child == leftChild)
{
rChildRect = RRect.fromRectAndCorners(childRect, topLeft: Radius.circular(3.0f),
bottomLeft: Radius.circular(3.0f));
}
else if (child == rightChild)
{
rChildRect = RRect.fromRectAndCorners(childRect, topRight: Radius.circular(3.0f),
bottomRight: Radius.circular(3.0f));
}
else
{
rChildRect = RRect.fromRectAndCorners(childRect, topRight: Radius.zero);
}
childParentData.surroundingRect = rChildRect;
start += child.size.width;
child = nextChild(child);
}
}
protected internal override float computeMaxIntrinsicHeight(float width)
{
RenderBox child = firstChild;
float maxHeight = 0.0f;
while (child != null)
{
_SegmentedControlContainerBoxParentData childParentData = child.parentData as _SegmentedControlContainerBoxParentData;
float childHeight = child.getMaxIntrinsicHeight(width);
maxHeight = Mathf.Max(maxHeight, childHeight);
child = childParentData.nextSibling;
}
return(maxHeight);
}
protected internal override float computeMinIntrinsicWidth(float height)
{
RenderBox child = firstChild;
float minWidth = 0.0f;
while (child != null)
{
_SegmentedControlContainerBoxParentData childParentData = child.parentData as _SegmentedControlContainerBoxParentData;
float childWidth = child.getMinIntrinsicWidth(height);
minWidth = Mathf.Max(minWidth, childWidth);
child = childParentData.nextSibling;
}
return(minWidth * childCount);
}
protected override bool hitTestChildren(BoxHitTestResult result, Offset position = null)
{
D.assert(position != null);
RenderBox child = lastChild;
while (child != null)
{
_SegmentedControlContainerBoxParentData childParentData = child.parentData as _SegmentedControlContainerBoxParentData;
if (childParentData.surroundingRect.contains(position))
{
Offset center = (Offset.zero & child.size).center;
return(result.addWithRawTransform(
transform: MatrixUtils.forceToPoint(center),
position: center,
hitTest: (BoxHitTestResult result1, Offset position1) => {
D.assert(position1 == center);
return child.hitTest(result1, position: center);
}
));
}
child = childParentData.previousSibling;
}
return(false);
}
