private void ComputeTableWidth()
{
Width =
(TableStyle.Left == char.MinValue ? 0 : 1) // length of the left border
+ ColumnDefinitions.Sum(cd => cd.Width) //sum of the column widths
+ ((ColumnDefinitions.Count - 1) * TableStyle.Separator.Length) // sum of the space occupied by column separators;
+ (TableStyle.Right == char.MinValue ? 0 : 1) // length of the right border
;
}
// Do measurement when in horizontal orientation
private void MeasureHorizontal(nfloat parentWidth, nfloat parentHeight)
{
// Work out our height
nfloat layoutWidth = LayoutParameters.TryResolveWidth(this, parentWidth, parentHeight);
nfloat layoutHeight = LayoutParameters.TryResolveHeight(this, parentWidth, parentHeight);
// Work out the total fixed size
var paddings = Padding.TotalWidth();
_goneViews = new List <View>();
_arrangedViews = new View[RowDefinitions.Count, ColumnDefinitions.Count];
var columnWidthFillParentSubviews = new List <View>();
//calculating columns
var minWidth = (nfloat)ColumnDefinitions.Sum(x => x.MinWidth);
foreach (var v in SubViews.Where(x => !x.Gone))
{
_arrangedViews[v.Row, v.Column] = v;
var columnDefinition = ColumnDefinitions[v.Column];
var rowDefinition = RowDefinitions[v.Column];
nfloat width;
if (columnDefinition.Width > 0)
{
width = columnDefinition.Width;
}
else if (columnDefinition.MaxWidth > 0)
{
width = columnDefinition.MaxWidth;
}
else
{
width = parentWidth - paddings;
}
nfloat height;
if (rowDefinition.Height > 0)
{
height = rowDefinition.Height;
}
else
{
height = adjustLayoutHeight(layoutHeight, v);
}
if (v.LayoutParameters.WidthUnits != Units.ParentRatio)
{
v.Measure(width - v.LayoutParameters.Margins.TotalWidth(), height);
}
else
{
v._measuredSize = new CGSize(0, 0);
v._measuredSizeValid = true;
columnWidthFillParentSubviews.Add(v);
}
}
{
nfloat totalWeight = 0;
nfloat totalWidth = 0;
var columnId = -1;
foreach (var column in ColumnDefinitions)
{
columnId++;
column.CalculatedWidth = 0;
if (column.Width > 0)
{
column.CalculatedWidth = column.Width;
}
else if (column.Width == AutoSize.WrapContent)
{
for (int rowId = 0; rowId < RowDefinitions.Count; rowId++)
{
var v = _arrangedViews[rowId, columnId];
if (v != null)
{
column.CalculatedWidth = NMath.Max(column.CalculatedWidth, v.GetMeasuredSize().Width + v.LayoutParameters.Margins.TotalWidth());
}
}
}
else if (column.Width == AutoSize.FillParent)
{
totalWeight += column.Weight;
}
totalWidth += column.CalculatedWidth;
}
var room = layoutWidth - totalWidth;
foreach (var column in ColumnDefinitions.Where(x => x.Width == AutoSize.FillParent))
{
columnId++;
column.CalculatedWidth = room * column.Weight / totalWeight;
}
}
{
var totalWeight = 0;
var totalHeight = 0;
var rowId = -1;
foreach (var row in RowDefinitions)
{
rowId++;
if (row.Height > 0)
{
row.CalculatedHeight = row.Height;
continue;
}
if (row.Height == AutoSize.WrapContent)
{
row.CalculatedHeight = 0;
for (int columnId = 0; columnId < ColumnDefinitions.Count; columnId++)
{
var v = _arrangedViews[rowId, columnId];
if (v != null)
{
row.CalculatedHeight = NMath.Max(row.CalculatedHeight, v.GetMeasuredSize().Height);
}
}
}
}
var room = layoutHeight - totalHeight;
foreach (var row in RowDefinitions.Where(x => x.Height == AutoSize.FillParent))
{
row.CalculatedHeight = room * row.Weight / totalWeight;
}
}
CGSize sizeMeasured = CGSize.Empty;
foreach (var item in ColumnDefinitions)
{
sizeMeasured.Width += item.CalculatedWidth;
}
sizeMeasured.Width += ColSpacing * (ColumnDefinitions.Count - 1);
foreach (var item in RowDefinitions)
{
sizeMeasured.Height += item.CalculatedHeight;
}
sizeMeasured.Height += RowSpacing * (RowDefinitions.Count - 1);
foreach (var v in columnWidthFillParentSubviews)
{
v.Measure(ColumnDefinitions[v.Column].CalculatedWidth, RowDefinitions[v.Row].CalculatedHeight);
}
// And finally, set our measure dimensions
SetMeasuredSize(LayoutParameters.ResolveSize(new CGSize(layoutWidth, layoutHeight), sizeMeasured));
}
