Rect EstimateExtent(Size availableSize, string layoutId)
{
UIElement firstRealizedElement = null;
Rect firstBounds = default;
UIElement lastRealizedElement = null;
Rect lastBounds = default;
int firstDataIndex = -1;
int lastDataIndex = -1;
if (m_elementManager.GetRealizedElementCount > 0)
{
firstRealizedElement = m_elementManager.GetAt(0);
firstBounds = m_elementManager.GetLayoutBoundsForRealizedIndex(0);
firstDataIndex = m_elementManager.GetDataIndexFromRealizedRangeIndex(0);
int last = m_elementManager.GetRealizedElementCount - 1;
lastRealizedElement = m_elementManager.GetAt(last);
lastDataIndex = m_elementManager.GetDataIndexFromRealizedRangeIndex(last);
lastBounds = m_elementManager.GetLayoutBoundsForRealizedIndex(last);
}
Rect extent = m_algorithmCallbacks.Algorithm_GetExtent(
availableSize,
m_context,
firstRealizedElement,
firstDataIndex,
firstBounds,
lastRealizedElement,
lastDataIndex,
lastBounds);
REPEATER_TRACE_INFO("%*s Extent: (%.0f,%.0f,%.0f,%.0f). \n", m_context.Indent, layoutId, extent.X, extent.Y, extent.Width, extent.Height);
return(extent);
}
private Rect EstimateExtent(Size availableSize, string layoutId)
{
ILayoutable firstRealizedElement = null;
Rect firstBounds = new Rect();
ILayoutable lastRealizedElement = null;
Rect lastBounds = new Rect();
int firstDataIndex = -1;
int lastDataIndex = -1;
if (_elementManager.GetRealizedElementCount() > 0)
{
firstRealizedElement = _elementManager.GetAt(0);
firstBounds = _elementManager.GetLayoutBoundsForRealizedIndex(0);
firstDataIndex = _elementManager.GetDataIndexFromRealizedRangeIndex(0);;
int last = _elementManager.GetRealizedElementCount() - 1;
lastRealizedElement = _elementManager.GetAt(last);
lastDataIndex = _elementManager.GetDataIndexFromRealizedRangeIndex(last);
lastBounds = _elementManager.GetLayoutBoundsForRealizedIndex(last);
}
Rect extent = _algorithmCallbacks.Algorithm_GetExtent(
availableSize,
_context,
firstRealizedElement,
firstDataIndex,
firstBounds,
lastRealizedElement,
lastDataIndex,
lastBounds);
return(extent);
}
private Rect EstimateExtent(Size availableSize, string layoutId)
{
ILayoutable firstRealizedElement = null;
Rect firstBounds = new Rect();
ILayoutable lastRealizedElement = null;
Rect lastBounds = new Rect();
int firstDataIndex = -1;
int lastDataIndex = -1;
if (_elementManager.GetRealizedElementCount() > 0)
{
firstRealizedElement = _elementManager.GetAt(0);
firstBounds = _elementManager.GetLayoutBoundsForRealizedIndex(0);
firstDataIndex = _elementManager.GetDataIndexFromRealizedRangeIndex(0);;
int last = _elementManager.GetRealizedElementCount() - 1;
lastRealizedElement = _elementManager.GetAt(last);
lastDataIndex = _elementManager.GetDataIndexFromRealizedRangeIndex(last);
lastBounds = _elementManager.GetLayoutBoundsForRealizedIndex(last);
}
Rect extent = _algorithmCallbacks.Algorithm_GetExtent(
availableSize,
_context,
firstRealizedElement,
firstDataIndex,
firstBounds,
lastRealizedElement,
lastDataIndex,
lastBounds);
Logger.TryGet(LogEventLevel.Verbose, "Repeater")?.Log(this, "{LayoutId} Extent: ({Bounds})", layoutId, extent);
return(extent);
}