/// <summary>
/// Utility function to find the first containing <see cref="GesturesContentView"/>
/// </summary>
/// <param name="view">View to find the parent from.</param>
/// <param name="throwException">True to throw an excpetion if the parent is not found</param>
/// <returns></returns>
private static GesturesContentView FindContentViewParent(View view, bool throwException=true)
{
var history = new List<string>();
var viewParent = view as GesturesContentView;
if (viewParent != null) return viewParent;
history.Add(view.GetType().Name);
var parent = view.Parent;
while (parent != null && !(parent is GesturesContentView))
{
history.Add(parent.GetType().Name);
parent = parent.Parent;
}
if (parent == null && throwException)
{
throw new InvalidNestingException(typeof (Gestures), typeof (GesturesContentView), history);
}
return (GesturesContentView) parent;
}
public static void UniversalAdjustments(Xamarin.Forms.View startingView)
{
if (startingView.GetType() == typeof(Grid))
{
var grid = (Grid)startingView;
if (grid.RowDefinitions != null)
{
foreach (var rowDef in grid.RowDefinitions)
{
if (rowDef.Height.IsAbsolute)
{
rowDef.Height = rowDef.Height.Value * _fontSizeRatio;
}
}
}
if (grid.ColumnDefinitions != null)
{
foreach (var colDef in grid.ColumnDefinitions)
{
if (colDef.Width.IsAbsolute)
{
colDef.Width = colDef.Width.Value * _fontSizeRatio;
}
}
}
foreach (var item in grid.Children)
{
if (item.GetType() == typeof(StackLayout))
{
StackLayoutAdjustments((StackLayout)item);
}
else if (item.GetType() == typeof(Button))
{
SetButtonAttributes((Button)item);
}
else if (item.GetType() == typeof(Label))
{
SetLabelFontAttributes((Label)item);
}
else if (item.GetType() == typeof(Entry))
{
EntryAdjustments((Entry)item);
}
else if (item.GetType() == typeof(Grid))
{
UniversalAdjustments(item);
}
}
}
else if (startingView.GetType() == typeof(StackLayout))
{
StackLayoutAdjustments((StackLayout)startingView);
}
else if (startingView.GetType() == typeof(Frame))
{
foreach (var ctl in ((Frame)startingView).Children)
{
UniversalAdjustments((Xamarin.Forms.View)ctl);
}
}
else if (startingView.GetType() == typeof(AbsoluteLayout))
{
foreach (var ctl in ((AbsoluteLayout)startingView).Children)
{
UniversalAdjustments(ctl);
}
}
else if (startingView.GetType() == typeof(ContentView))
{
foreach (var ctl in ((ContentView)startingView).Children)
{
UniversalAdjustments((Xamarin.Forms.View)ctl);
}
}
}