public bool hitTestInteractive(Offset position)
{
if (_thumbRect == null)
{
return(false);
}
if (fadeoutOpacityAnimation.value == 0.0f)
{
return(false);
}
Rect interactiveThumbRect = _thumbRect.expandToInclude(
Rect.fromCircle(center: _thumbRect.center, radius: ScrollbarPainterUtils._kMinInteractiveSize / 2)
);
return(interactiveThumbRect.contains(position));
}
public override Widget build(BuildContext context)
{
LayerLink layerLink = null;
TextSelectionHandleType type = TextSelectionHandleType.left;
switch (widget.position)
{
case _TextSelectionHandlePosition.start:
layerLink = widget.startHandleLayerLink;
type = _chooseType(
widget.renderObject.textDirection,
TextSelectionHandleType.left,
TextSelectionHandleType.right
);
break;
case _TextSelectionHandlePosition.end:
D.assert(!widget.selection.isCollapsed);
layerLink = widget.endHandleLayerLink;
type = _chooseType(
widget.renderObject.textDirection,
TextSelectionHandleType.right,
TextSelectionHandleType.left
);
break;
}
Offset handleAnchor = widget.selectionControls.getHandleAnchor(
type,
widget.renderObject.preferredLineHeight
);
Size handleSize = widget.selectionControls.getHandleSize(
widget.renderObject.preferredLineHeight
);
Rect handleRect = Rect.fromLTWH(
-handleAnchor.dx,
-handleAnchor.dy,
handleSize.width,
handleSize.height
);
Rect interactiveRect = handleRect.expandToInclude(
Rect.fromCircle(center: handleRect.center, radius: kMinInteractiveDimension / 2)
);
RelativeRect padding = RelativeRect.fromLTRB(
Mathf.Max((interactiveRect.width - handleRect.width) / 2, 0),
Mathf.Max((interactiveRect.height - handleRect.height) / 2, 0),
Mathf.Max((interactiveRect.width - handleRect.width) / 2, 0),
Mathf.Max((interactiveRect.height - handleRect.height) / 2, 0)
);
return(new CompositedTransformFollower(
link: layerLink,
offset: interactiveRect.topLeft,
showWhenUnlinked: false,
child: new FadeTransition(
opacity: _opacity,
child: new Container(
alignment: Alignment.topLeft,
width: interactiveRect.width,
height: interactiveRect.height,
child: new GestureDetector(
behavior: HitTestBehavior.translucent,
dragStartBehavior: widget.dragStartBehavior,
onPanStart: _handleDragStart,
onPanUpdate: _handleDragUpdate,
onTap: _handleTap,
child: new Padding(
padding: EdgeInsets.only(
left: padding.left,
top: padding.top,
right: padding.right,
bottom: padding.bottom
),
child: widget.selectionControls.buildHandle(context, type,
widget.renderObject.preferredLineHeight)
)
)
)
)
));
}
