/// <summary>
/// Is the Thickness empty?
/// </summary>
/// <param name="thickness"></param>
/// <returns></returns>
public static bool IsEmpty(this Xamarin.Forms.Thickness thickness)
{
if (thickness.Left == 0.0 && thickness.Top == 0.0 && thickness.Right == 0.0)
{
return(thickness.Bottom == 0.0);
}
return(false);
}
public static Thickness ToWinPhone(this Xamarin.Forms.Thickness t)
{
return(new Thickness(t.Left, t.Top, t.Right, t.Bottom));
}
/// <summary>
/// Converts CapsInsets (non-stretchable insets of image) to Forms9Patch.RangeLists
/// </summary>
/// <param name="capInsets"></param>
/// <param name="bitmapWidth"></param>
/// <param name="bitmapHeight"></param>
/// <param name="imageSource"></param>
/// <param name="ninePatchSource"></param>
/// <returns></returns>
public static RangeLists ToRangeLists(this Xamarin.Forms.Thickness capInsets, int bitmapWidth, int bitmapHeight, Xamarin.Forms.ImageSource imageSource, bool ninePatchSource)
{
if (capInsets.Left > 0 || capInsets.Right > 0 || capInsets.Top > 0 || capInsets.Bottom > 0)
{
int offset = 0;
bool normalized = (capInsets.Left < 1 && capInsets.Right < 1);
var scale = (float)imageSource.GetValue(ImageSource.ImageScaleProperty);
var capsX = new List <Range>();
if (capInsets.Left > 0 || capInsets.Right > 0)
{
var start = (float)System.Math.Round(capInsets.Left * (normalized ? bitmapWidth : scale) + offset);
var end = (float)System.Math.Round(bitmapWidth - 1 - capInsets.Right * (normalized ? bitmapWidth : scale) + offset);
if (start < 0)
{
start = 0;
}
if (end > bitmapWidth - 1)
{
end = bitmapWidth - 1;
}
if (end < 0)
{
end = 0;
}
if (start >= end)
{
start = end;
}
if (start > 0)
{
capsX.Add(new Range(0, start - 1, false));
}
capsX.Add(new Range(start, end, true));
if (end < bitmapWidth - 1)
{
capsX.Add(new Range(end, bitmapWidth - 1, false));
}
}
else
{
capsX.Add(new Range(0, bitmapWidth - 1, true));
}
normalized = (capInsets.Top < 1 && capInsets.Bottom < 1);
var capsY = new List <Range>();
if (capInsets.Top > 0 || capInsets.Bottom > 0)
{
var start = (float)System.Math.Round(capInsets.Top * (normalized ? bitmapHeight : scale) + offset);
var end = (float)System.Math.Round(bitmapHeight - 1 - capInsets.Bottom * (normalized ? bitmapHeight : scale) + offset);
if (start < 0)
{
start = 0;
}
if (end > bitmapHeight - 1)
{
end = bitmapHeight - 1;
}
if (end < 0)
{
end = 0;
}
if (start >= end)
{
start = end;
}
if (start > 0)
{
capsY.Add(new Range(0, start - 1, false));
}
capsY.Add(new Range(start, end, true));
if (end < bitmapHeight - 1)
{
capsY.Add(new Range(end, bitmapHeight - 1, false));
}
}
else
{
capsY.Add(new Range(0, bitmapHeight - 1, true));
}
return(new RangeLists
{
PatchesX = capsX,
PatchesY = capsY
});
}
return(null);
/*
* if (capInsets.Left > 0 || capInsets.Right > 0 || capInsets.Top > 0 || capInsets.Bottom > 0)
* {
* int offset = 0;// ninePatchSource ? 1 : 0;
* bool normalized = (capInsets.Left < 1 && capInsets.Right < 1);
* var scale = (float)imageSource.GetValue(ImageSource.ImageScaleProperty);
* var capsX = new List<Range>();
* if (capInsets.Left > 0 || capInsets.Right > 0)
* {
* var start = capInsets.Left * (normalized ? bitmapWidth : scale) + offset;
* //System.Diagnostics.Debug.WriteLine("START: [" + start + "]");
* var end = bitmapWidth - 1 - capInsets.Right * (normalized ? bitmapWidth : scale) + offset;
* //System.Diagnostics.Debug.WriteLine("END: [" + end + "]");
* if (start < 0)
* start = 0;
* if (end > bitmapWidth - 1)// - System.Math.Ceiling(Display.Scale))
* end = bitmapWidth - 1; // - System.Math.Ceiling(Display.Scale);
* if (start >= end)
* start = end - 1;
* capsX.Add(new Range
* {
* Start = start,
* End = end
* });
* }
* else
* {
* capsX.Add(new Range
* {
* Start = 0,
* End = bitmapWidth - 1
* });
* }
* normalized = (capInsets.Top < 1 && capInsets.Bottom < 1);
* var capsY = new List<Range>();
* if (capInsets.Top > 0 || capInsets.Bottom > 0)
* {
* var start = capInsets.Top * (normalized ? bitmapHeight : scale) + offset;
* //System.Diagnostics.Debug.WriteLine("START: [" + start + "]");
* var end = bitmapHeight - 1 - capInsets.Bottom * (normalized ? bitmapHeight : scale) + offset;
* //System.Diagnostics.Debug.WriteLine("END: [" + end + "]");
* if (start < 0)
* start = 0;
* if (end > bitmapHeight - 1) // - System.Math.Ceiling(Display.Scale))
* end = bitmapHeight - 1;// - System.Math.Ceiling(Display.Scale);
* if (start >= end)
* start = end - 1;
* capsY.Add(new Range
* {
* Start = start,
* End = end,
* });
* }
* else
* {
* capsY.Add(new Range
* {
* Start = 0,
* End = bitmapHeight - 1,
* });
* }
*
* return new RangeLists
* {
* PatchesX = capsX,
* PatchesY = capsY
* };
* }
* return null;
*/
}
/// <summary>
/// Description the specified thickness.
/// </summary>
/// <param name="thickness">Thickness.</param>
public static string Description(this Xamarin.Forms.Thickness thickness)
{
return("[Thickness:" + thickness.Left + "," + thickness.Top + "," + thickness.Right + "," + thickness.Bottom + "]");
}
public static Windows.UI.Xaml.Thickness ToWindows(this Xamarin.Forms.Thickness thickness)
{
return(new Windows.UI.Xaml.Thickness(thickness.Left, thickness.Top, thickness.Right, thickness.Bottom));
}
