public static UIKit.UIColor FromHex(string hexString)
{
hexString = hexString.ToUpper();
var hex = hexString.StartsWith("#") ? hexString.Remove(0, 1) : hexString;
int value = Int32.Parse(hex, System.Globalization.NumberStyles.HexNumber);
UIKit.UIColor color = null;
if (hex.Length == 8)
{
var alpha = (nfloat)(((value & 0xFF000000) >> 24) / 255.0);
var red = (nfloat)(((value & 0x00FF0000) >> 16) / 255.0);
var green = (nfloat)(((value & 0x0000FF00) >> 8) / 255.0);
var blue = (nfloat)(((value & 0x000000FF)) / 255.0);
color = new UIKit.UIColor(red, green, blue, alpha);
}
if (hex.Length == 6)
{
var red = (nfloat)(((value & 0xFF0000) >> 16) / 255.0);
var green = (nfloat)(((value & 0x00FF00) >> 8) / 255.0);
var blue = (nfloat)((value & 0x0000FF) / 255.0);
color = new UIKit.UIColor(red, green, blue, 1.0f);
}
return(color);
}
public static Color GetColor(this UIKit.UIColor color)
{
nfloat r, g, b, a;
color.GetRGBA(out r, out g, out b, out a);
return(Color.FromRGB(r, g, b, a));
}
public static UNColor FromRgba(nfloat red, nfloat green, nfloat blue, nfloat alpha)
{
#if __IOS__
return(UNColor.FromRGBA(red, green, blue, alpha));
#else
return(UNColor.FromRgba(red, green, blue, alpha));
#endif
}
public static uint UIColorToInt(UIKit.UIColor color)
{
nfloat colorR, colorG, colorB, colorA;
color.GetRGBA(out colorR, out colorG, out colorB, out colorA);
return((uint)(colorR * 255.0f) << 24 | (uint)(colorG * 255.0f) << 16 | (uint)(colorB * 255.0f) << 8 | (uint)(colorA * 255.0f));
}
public static RGB ToRGB(this UIKit.UIColor color)
{
nfloat r, g, b, a;
color.GetRGBA(out r, out g, out b, out a);
return(new RGB((byte)Math.Round(r * 255),
(byte)Math.Round(g * 255),
(byte)Math.Round(b * 255),
(byte)Math.Round(a * 255)));
}
NativeColor ToNativeColor(Color color)
{
#if __IOS__
return(NativeColor.FromRGBA(
color.Red,
color.Green,
color.Blue,
color.Alpha));
#elif MONOMAC
return(NativeColor.FromDeviceRgba(
color.RedValue,
color.GreenValue,
color.BlueValue,
color.AlphaValue));
#endif
}
public override UIKit.UITableViewCell GetCell(Cell item, UIKit.UITableViewCell reusableCell, UIKit.UITableView tv)
{
tv.AllowsSelection = false;
var cell = base.GetCell(item, reusableCell, tv);
UIKit.UIColor backColor = Xamarin.Forms.Color.Transparent.ToUIColor();
var cellEx = item as ViewCellEx;
if (cellEx != null)
{
backColor = cellEx.CellBackColor.ToUIColor();
}
cell.BackgroundColor = backColor;
if (_bgView == null)
{
_bgView = new UIKit.UIView
{
BackgroundColor = backColor
};
}
cell.BackgroundView = _bgView;
cell.SelectionStyle = UIKit.UITableViewCellSelectionStyle.None;
switch (item.StyleId)
{
case "checkmark":
cell.Accessory = UIKit.UITableViewCellAccessory.Checkmark;
break;
case "detail-button":
cell.Accessory = UIKit.UITableViewCellAccessory.DetailButton;
break;
case "detail-disclosure-button":
cell.Accessory = UIKit.UITableViewCellAccessory.DetailDisclosureButton;
break;
case "disclosure":
default:
cell.Accessory = UIKit.UITableViewCellAccessory.None;
break;
}
return(cell);
}
void SetUnderline()
{
#if __IOS__
var color = NativeColor.FromRGBA(
underlineColor.Red,
underlineColor.Green,
underlineColor.Blue,
underlineColor.Alpha);
attrs.UnderlineColor = color;
attrs.UnderlineStyle = underlineStyle == UnderlineStyle.None ?
NSUnderlineStyle.None : NSUnderlineStyle.Single;
#elif MONOMAC
attrs.Dictionary.SetValue(AppKit.NSStringAttributeKey.UnderlineColor, ToNativeColor(underlineColor));
var ns = underlineStyle == UnderlineStyle.None ? 0 :
(underlineStyle == UnderlineStyle.Single ? 0x1 : 0x9);
attrs.Dictionary.SetValue(AppKit.NSStringAttributeKey.UnderlineStyle, NSNumber.FromInt32(ns));
#endif
}
INativeObject ToNativeColor(Color color)
{
if (UseCGColor)
{
return(new CGColor(
color.RedValue,
color.GreenValue,
color.BlueValue,
color.AlphaValue));
}
#if __IOS__
return(NativeColor.FromRGBA(
color.Red,
color.Green,
color.Blue,
color.Alpha));
#elif MONOMAC
return(NativeColor.FromDeviceRgba(
color.RedValue,
color.GreenValue,
color.BlueValue,
color.AlphaValue));
#endif
}
public static void RoundCorners(this _View thisButton, float radius = 2, float borderThickness = 0, _Color borderColor = null)
{
thisButton.AddBorder(borderThickness, borderColor);
thisButton.Layer.CornerRadius = radius;
}
public static void AddBorder(this _View thisButton, float borderThickness = 1, _Color borderColor = null)
{
if (borderColor != null)
{
thisButton.Layer.BorderColor = borderColor.CGColor;
}
if (borderThickness > 0)
{
if (Math.Abs(borderThickness - 1f) < float.Epsilon && ViewHelper.IsRetinaDisplay)
{
borderThickness = (float)ViewHelper.OnePixel;
}
thisButton.Layer.BorderWidth = borderThickness;
}
}
public static FrameworkElement Background(this FrameworkElement panel, GenericColor color)
{
panel.Background = new SolidColorBrush(color);
return(panel);
}
public ChartColor(UIKit.UIColor value)
{
Value = value;
}
public ChartColor(SkiaSharp.SKColor value)
{
Value = value;
}
public ChartColor(double r, double g, double b, double a)
{
Value = new UIKit.UIColor((float)r, (float)g, (float)b, (float)a);
}
public static void AddBorder(this _View thisButton, float borderThickness = 1, _Color borderColor = null)
{
var layer = thisButton.Layer;
if (borderColor != null)
{
layer.BorderColor = borderColor.CGColor;
}
if (borderThickness > 0)
{
layer.BorderWidth = ViewHelper.GetConvertedPixel(borderThickness);
}
}