protected override void performLayout()
{
BoxConstraints constraints = this.constraints;
bool hasDivider = contentSection.getMaxIntrinsicHeight(constraints.maxWidth) > 0.0f &&
actionsSection.getMaxIntrinsicHeight(constraints.maxWidth) > 0.0f;
float dividerThickness = hasDivider ? _dividerThickness : 0.0f;
float minActionsHeight = actionsSection.getMinIntrinsicHeight(constraints.maxWidth);
contentSection.layout(
constraints.deflate(EdgeInsets.only(bottom: minActionsHeight + dividerThickness)),
parentUsesSize: true
);
Size contentSize = contentSection.size;
actionsSection.layout(
constraints.deflate(EdgeInsets.only(top: contentSize.height + dividerThickness)),
parentUsesSize: true
);
Size actionsSize = actionsSection.size;
float actionSheetHeight = contentSize.height + dividerThickness + actionsSize.height;
size = new Size(constraints.maxWidth, actionSheetHeight);
D.assert(actionsSection.parentData is MultiChildLayoutParentData);
MultiChildLayoutParentData actionParentData = actionsSection.parentData as MultiChildLayoutParentData;
actionParentData.offset = new Offset(0.0f, contentSize.height + dividerThickness);
}
public override void paint(PaintingContext context, Offset offset)
{
MultiChildLayoutParentData contentParentData = contentSection.parentData as MultiChildLayoutParentData;
contentSection.paint(context, offset + contentParentData.offset);
bool hasDivider = contentSection.size.height > 0.0f && actionsSection.size.height > 0.0f;
if (hasDivider)
{
_paintDividerBetweenContentAndActions(context.canvas, offset);
}
MultiChildLayoutParentData actionsParentData = actionsSection.parentData as MultiChildLayoutParentData;
actionsSection.paint(context, offset + actionsParentData.offset);
}
protected override bool hitTestChildren(HitTestResult result, Offset position = null)
{
bool isHit = false;
MultiChildLayoutParentData contentSectionParentData =
this.contentSection.parentData as MultiChildLayoutParentData;
MultiChildLayoutParentData actionsSectionParentData =
this.actionsSection.parentData as MultiChildLayoutParentData;
;
if (this.contentSection.hitTest(result, position: position - contentSectionParentData.offset))
{
isHit = true;
}
else if (this.actionsSection.hitTest(result,
position: position - actionsSectionParentData.offset))
{
isHit = true;
}
return(isHit);
}
protected override bool hitTestChildren(BoxHitTestResult result, Offset position = null)
{
MultiChildLayoutParentData contentSectionParentData =
contentSection.parentData as MultiChildLayoutParentData;
MultiChildLayoutParentData actionsSectionParentData =
actionsSection.parentData as MultiChildLayoutParentData;
return(result.addWithPaintOffset(
offset: contentSectionParentData.offset,
position: position,
hitTest: (BoxHitTestResult resultIn, Offset transformed) => {
D.assert(transformed == position - contentSectionParentData.offset);
return contentSection.hitTest(resultIn, position: transformed);
}) || result.addWithPaintOffset(
offset: actionsSectionParentData.offset,
position: position,
hitTest: (BoxHitTestResult resultIn, Offset transformed) => {
D.assert(transformed == position - actionsSectionParentData.offset);
return actionsSection.hitTest(resultIn, position: transformed);
}
));
}