CustomNavButton & CustomNavBackButton

gistfile1.cs

public class CustomNavBarBackButton : UIButton 
	{
		private const float MAX_WIDTH = 160.0f;
		private const int CapWidth = 14;
		UIImage buttonImage;
		string buttonTitle;
		
		
		public event NSAction Tapped;
		
		public CustomNavBarBackButton(UIImage ButtonImage)
		{
			buttonImage = ButtonImage.StretchableImage(CapWidth,0);	
			PrepareButton();
		}
		
		public CustomNavBarBackButton(UIImage ButtonImage, string ButtonTitle)
		{
			buttonImage = ButtonImage.StretchableImage(CapWidth,0);
			buttonTitle = ButtonTitle;
			PrepareButton();
		}
		
		public CustomNavBarBackButton(UIImage ButtonImage, string ButtonTitle, NSAction tapped)
		{
			buttonImage = ButtonImage.StretchableImage(CapWidth,0);
			buttonTitle = ButtonTitle;
			if (tapped != null){
				Tapped += tapped;
			}
			PrepareButton();
			
		}
		
		public void SetText(string buttonTitle)
		{
			NSString bt;
			if (!string.IsNullOrEmpty(buttonTitle)) {
				SetTitle(buttonTitle, UIControlState.Normal);	
				bt = new NSString(buttonTitle);
			}
			else {
				SetTitle("Back", UIControlState.Normal);
				bt = new NSString("Back");
			}
			SizeF textSize = bt.StringSize(TitleLabel.Font);
			
			if ((textSize.Width + (CapWidth * 1.5)) > MAX_WIDTH){
				Frame = new RectangleF(Frame.X, Frame.Y, MAX_WIDTH,Frame.Size.Height);	
			}
			else {
				Frame = new RectangleF(Frame.X,Frame.Y,textSize.Width + (CapWidth * 1.5f), Frame.Size.Height);
			}
			
		}
		
		private void PrepareButton()
		{
			//= UIButton.FromType(UIButtonType.Custom);
			TitleLabel.Font = UIFont.SystemFontOfSize(UIFont.SmallSystemFontSize);
			TitleLabel.TextColor = UIColor.White;
			TitleLabel.ShadowColor = UIColor.DarkGray;
			TitleLabel.ShadowOffset = new SizeF(0,-1);
			TitleLabel.LineBreakMode = UILineBreakMode.TailTruncation;
			TitleEdgeInsets = new UIEdgeInsets(0f,6.0f,0f,3.0f);
			Frame = new RectangleF(0,0,0,buttonImage.Size.Height);
			
			SetText(buttonTitle);
			
			SetBackgroundImage (buttonImage, UIControlState.Normal);
			
			if (Tapped != null){
				TouchUpInside += delegate(object sender, EventArgs e) {
					Tapped();
				};
			}
			
		}
	}
	
	public class CustomNavBarButton : UIButton 
	{
		private const float MAX_WIDTH = 160.0f;
		private const int CapWidth = 7;
		UIImage buttonImage;
		string buttonTitle;
		
		
		public event NSAction Tapped;
		
		public CustomNavBarButton(UIImage ButtonImage)
		{
			buttonImage = ButtonImage.StretchableImage(CapWidth,0);	
			PrepareButton();
		}
		
		public CustomNavBarButton(UIImage ButtonImage, string ButtonTitle)
		{
			buttonImage = ButtonImage.StretchableImage(CapWidth,0);
			buttonTitle = ButtonTitle;
			PrepareButton();
		}
		
		public CustomNavBarButton(UIImage ButtonImage, string ButtonTitle, NSAction tapped)
		{
			buttonImage = ButtonImage.StretchableImage(CapWidth,0);
			buttonTitle = ButtonTitle;
			if (tapped != null){
				Tapped += tapped;
			}
			PrepareButton();
			
		}
		
		public void SetText(string buttonTitle)
		{
			NSString bt;
			if (!string.IsNullOrEmpty(buttonTitle)) {
				SetTitle(buttonTitle, UIControlState.Normal);	
				bt = new NSString(buttonTitle);
			}
			else {
				SetTitle("Back", UIControlState.Normal);
				bt = new NSString("Back");
			}
			SizeF textSize = bt.StringSize(TitleLabel.Font);
			
			if ((textSize.Width + (CapWidth * 1.5)) > MAX_WIDTH){
				Frame = new RectangleF(Frame.X, Frame.Y, MAX_WIDTH,Frame.Size.Height);	
			}
			else {
				Frame = new RectangleF(Frame.X,Frame.Y,textSize.Width + (CapWidth * 1.5f), Frame.Size.Height);
			}
			
		}
		
		private void PrepareButton()
		{
			//= UIButton.FromType(UIButtonType.Custom);
			TitleLabel.Font = UIFont.SystemFontOfSize(UIFont.SmallSystemFontSize);
			TitleLabel.TextColor = UIColor.White;
			TitleLabel.ShadowColor = UIColor.DarkGray;
			TitleLabel.ShadowOffset = new SizeF(0,-1);
			TitleLabel.LineBreakMode = UILineBreakMode.TailTruncation;
			TitleEdgeInsets = new UIEdgeInsets(0f,6.0f,0f,3.0f);
			Frame = new RectangleF(0,0,0,buttonImage.Size.Height);
			
			SetText(buttonTitle);
			
			SetBackgroundImage (buttonImage, UIControlState.Normal);
			
			if (Tapped != null){
				TouchUpInside += delegate(object sender, EventArgs e) {
					Tapped();
				};
			}
			
		}
	}