TimeSpan getFadeDurationForType(_HighlightType type)
{
switch (type)
{
case _HighlightType.pressed:
return(new TimeSpan(0, 0, 0, 0, 200));
case _HighlightType.hover:
case _HighlightType.focus:
return(new TimeSpan(0, 0, 0, 0, 50));
}
D.assert(false, () => $"Unhandled {typeof(_HighlightType)} {type}");
return(TimeSpan.Zero);
}
Color getHighlightColorForType(_HighlightType type)
{
switch (type)
{
case _HighlightType.pressed:
return(widget.highlightColor ?? Theme.of(context).highlightColor);
case _HighlightType.focus:
return(widget.focusColor ?? Theme.of(context).focusColor);
case _HighlightType.hover:
return(widget.hoverColor ?? Theme.of(context).hoverColor);
}
D.assert(false, () => $"Unhandled {typeof(_HighlightType)} {type}");
return(null);
}
public void updateHighlight(_HighlightType type, bool value)
{
InkHighlight highlight = _highlights.getOrDefault(type);
void handleInkRemoval()
{
D.assert(_highlights.getOrDefault(type) != null);
_highlights[type] = null;
updateKeepAlive();
}
if (value == (highlight != null && highlight.active))
{
return;
}
if (value)
{
if (highlight == null)
{
RenderBox referenceBox = (RenderBox)context.findRenderObject();
_highlights[type] = new InkHighlight(
controller: Material.of(context),
referenceBox: referenceBox,
color: getHighlightColorForType(type),
shape: widget.highlightShape,
borderRadius: widget.borderRadius,
customBorder: widget.customBorder,
rectCallback: widget.getRectCallback(referenceBox),
onRemoved: handleInkRemoval,
textDirection: Directionality.of(context),
fadeDuration: getFadeDurationForType(type)
);
updateKeepAlive();
}
else
{
highlight.activate();
}
}
else
{
highlight.deactivate();
}
D.assert(value == (_highlights.getOrDefault(type) != null && _highlights[type].active));
switch (type)
{
case _HighlightType.pressed: {
if (widget.onHighlightChanged != null)
{
widget.onHighlightChanged(value);
}
break;
}
case _HighlightType.hover: {
if (widget.onHover != null)
{
widget.onHover(value);
}
break;
}
case _HighlightType.focus:
break;
}
}
