/// <summary>
/// Calculates the relative point in the Grid for the available space for this measure
/// </summary>
/// <returns>The upper left edge.</returns>
/// <param name="measure">Measure.</param>
private PointF CalculateUpperLeftEdge(GridSubViewMeasure measure)
{
float x = 0, y = 0;
for (int i = 0; i < measure.Row && i < __rows.Count; i++)
y = y + __rows[i].RealHeight;
for (int j = 0; j < measure.Column && j < __columns.Count; j++)
x = x + __columns[j].RealWidth;
PointF upperLeftEdge = new PointF(x, y);
return upperLeftEdge;
}
/// <summary>
/// Calculates the available space in the Grid for this measure
/// </summary>
/// <returns>The boundary frame.</returns>
/// <param name="measure">Measure.</param>
private SizeF CalculateBoundaryFrame(GridSubViewMeasure measure)
{
float width = 0, height = 0;
int lastRow = measure.Row + measure.RowSpan;
int lastColumn = measure.Column + measure.ColumnSpan;
for (int i = measure.Row; i < lastRow && i < __rows.Count; i++)
height = height + __rows[i].RealHeight;
for (int j = measure.Column; j < lastColumn && j < __columns.Count; j++)
width = width + __columns[j].RealWidth;
SizeF boundaryFrame = new SizeF(width, height);
return boundaryFrame;
}
private RectangleF CalculateMeasure(GridSubViewMeasure measure)
{
PointF originPoint = this.CalculateUpperLeftEdge(measure);
SizeF boundaryFrame = this.CalculateBoundaryFrame(measure);
float relativeWidth = measure.HorizontalAlignment.CalculateWidth(boundaryFrame.Width, measure.Width, measure.AutoWidth, measure.Margin);
float relativeXPosition = measure.HorizontalAlignment.CalculateXPosition(boundaryFrame.Width, relativeWidth, measure.Margin);
float relativeHeight = measure.VerticalAlignment.CalculateHeight(boundaryFrame.Height, measure.Height, measure.AutoHeight, measure.Margin);
float relativeYPosition = measure.VerticalAlignment.CalculateYPosition(boundaryFrame.Height, relativeHeight, measure.Margin);
PointF subViewLocation = new PointF(originPoint.X + relativeXPosition, originPoint.Y + relativeYPosition);
SizeF subViewSize = new SizeF(relativeWidth, relativeHeight);
RectangleF subViewRectangle = new RectangleF(subViewLocation, subViewSize);
return subViewRectangle;
}
public void AddChild(UIView subView, int row = 0, int column = 0, int rowSpan = 1, int columnSpan = 1,
bool autoHeight = true, bool autoWidth = true, GridHorizontalAlignment horizontalAlingment = GridHorizontalAlignment.Stretch,
GridVerticalAlignment verticalAlingment = GridVerticalAlignment.Stretch,
SubViewThickness margin = default(SubViewThickness))
{
GridSubViewMeasure subViewMeasure = new GridSubViewMeasure()
{Row = row, Column = column, RowSpan = rowSpan, ColumnSpan = columnSpan,
AutoWidth = autoWidth, AutoHeight = autoHeight,
HorizontalAlignment = horizontalAlingment, VerticalAlignment = verticalAlingment,
Margin = margin, Width = subView.Frame.Width, Height = subView.Frame.Height
};
__measures.Add(subView, subViewMeasure);
RectangleF subViewFrame = this.CalculateMeasure(subViewMeasure);
subView.Frame = subViewFrame;
this.Add(subView);
}
