private void Initialize()
{
const int ThinPad = 3;
const int ThickPad = 20;
const int LineHeight = 2;
RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Star)
});
RowDefinitions.Add(new RowDefinition {
Height = GridLength.Auto
});
// add the background view
{
BackgroundImageView = new Image();
BackgroundImageView.SetValue(Grid.HorizontalAlignmentProperty, HorizontalAlignment.Stretch);
BackgroundImageView.SetValue(Grid.VerticalAlignmentProperty, VerticalAlignment.Stretch);
BackgroundImageView.SetValue(Grid.RowProperty, 0);
Children.Add(BackgroundImageView);
}
// add the main signature view
{
SignaturePadCanvas = new SignaturePadCanvasView();
SignaturePadCanvas.SetValue(Grid.HorizontalAlignmentProperty, HorizontalAlignment.Stretch);
SignaturePadCanvas.SetValue(Grid.VerticalAlignmentProperty, VerticalAlignment.Stretch);
SignaturePadCanvas.SetValue(Grid.RowProperty, 0);
SignaturePadCanvas.StrokeCompleted += (sender, e) =>
{
UpdateUi();
StrokeCompleted?.Invoke(this, EventArgs.Empty);
};
SignaturePadCanvas.Cleared += (sender, e) => Cleared?.Invoke(this, EventArgs.Empty);
Children.Add(SignaturePadCanvas);
}
// add the caption
{
Caption = new TextBlock()
{
Text = "Sign here.",
FontSize = 11,
Foreground = new SolidColorBrush(Colors.Gray),
TextAlignment = TextAlignment.Center,
Margin = new Thickness(ThinPad)
};
Caption.SetValue(Grid.HorizontalAlignmentProperty, HorizontalAlignment.Stretch);
Caption.SetValue(Grid.VerticalAlignmentProperty, VerticalAlignment.Bottom);
Caption.SetValue(Grid.RowProperty, 1);
Children.Add(Caption);
}
// add the signature line
{
SignatureLine = new Border()
{
Background = new SolidColorBrush(Colors.Gray),
Height = LineHeight,
Margin = new Thickness(ThickPad, 0, ThickPad, 0)
};
SignatureLine.SetValue(Grid.HorizontalAlignmentProperty, HorizontalAlignment.Stretch);
SignatureLine.SetValue(Grid.VerticalAlignmentProperty, VerticalAlignment.Bottom);
Children.Add(SignatureLine);
}
// add the prompt
{
SignaturePrompt = new TextBlock()
{
Text = "X",
FontSize = 20,
FontWeight = FontWeights.Bold,
Margin = new Thickness(ThickPad, 0, 0, ThinPad)
};
SignaturePrompt.SetValue(Grid.HorizontalAlignmentProperty, HorizontalAlignment.Left);
SignaturePrompt.SetValue(Grid.VerticalAlignmentProperty, VerticalAlignment.Bottom);
Children.Add(SignaturePrompt);
}
// add the clear label
{
ClearLabel = new TextBlock()
{
Text = "Clear",
FontSize = 11,
FontWeight = FontWeights.Bold,
Visibility = Visibility.Collapsed,
Foreground = new SolidColorBrush(Colors.Gray),
Margin = new Thickness(0, ThickPad, ThickPad, 0)
};
ClearLabel.SetValue(Grid.HorizontalAlignmentProperty, HorizontalAlignment.Right);
ClearLabel.SetValue(Grid.VerticalAlignmentProperty, VerticalAlignment.Top);
Children.Add(ClearLabel);
// attach the "clear" command
ClearLabel.MouseLeftButtonUp += (sender, e) => Clear();
}
// clear / initialize the view
Clear();
}
private void Initialize()
{
// add the background view
{
BackgroundImageView = new ImageView(Context)
{
Id = GenerateId(this),
LayoutParameters = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MatchParent, RelativeLayout.LayoutParams.MatchParent)
};
AddView(BackgroundImageView);
}
// add the main signature view
{
SignaturePadCanvas = new SignaturePadCanvasView(Context)
{
Id = GenerateId(this),
LayoutParameters = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MatchParent, RelativeLayout.LayoutParams.MatchParent)
};
SignaturePadCanvas.StrokeCompleted += (sender, e) =>
{
UpdateUi();
StrokeCompleted?.Invoke(this, EventArgs.Empty);
};
SignaturePadCanvas.Cleared += (sender, e) => Cleared?.Invoke(this, EventArgs.Empty);
AddView(SignaturePadCanvas);
}
// add the caption
{
Caption = new TextView(Context)
{
Id = GenerateId(this),
Text = "Sign Here"
};
var layout = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WrapContent, RelativeLayout.LayoutParams.WrapContent)
{
AlignWithParent = true,
BottomMargin = 6
};
layout.AddRule(LayoutRules.AlignBottom);
layout.AddRule(LayoutRules.CenterHorizontal);
Caption.LayoutParameters = layout;
Caption.SetIncludeFontPadding(true);
Caption.SetPadding(0, 0, 0, 6);
AddView(Caption);
}
// add the signature line
{
SignatureLine = new View(Context)
{
Id = GenerateId(this)
};
SignatureLine.SetBackgroundColor(Color.Gray);
var layout = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MatchParent, 1);
layout.SetMargins(10, 0, 10, 5);
layout.AddRule(LayoutRules.Above, Caption.Id);
SignatureLine.LayoutParameters = layout;
AddView(SignatureLine);
}
// add the prompt
{
SignaturePrompt = new TextView(Context)
{
Id = GenerateId(this),
Text = "X"
};
SignaturePrompt.SetTypeface(null, TypefaceStyle.Bold);
var layout = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WrapContent, RelativeLayout.LayoutParams.WrapContent)
{
LeftMargin = 11
};
layout.AddRule(LayoutRules.Above, SignatureLine.Id);
SignaturePrompt.LayoutParameters = layout;
AddView(SignaturePrompt);
}
// add the clear label
{
ClearLabel = new TextView(Context)
{
Id = GenerateId(this),
Text = "Clear",
Visibility = ViewStates.Invisible
};
var layout = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WrapContent, RelativeLayout.LayoutParams.WrapContent)
{
AlignWithParent = true
};
layout.SetMargins(0, 10, 22, 0);
layout.AddRule(LayoutRules.AlignRight);
layout.AddRule(LayoutRules.AlignTop);
ClearLabel.LayoutParameters = layout;
AddView(ClearLabel);
// attach the "clear" command
ClearLabel.Click += (sender, e) => Clear();
}
// clear / initialize the view
Clear();
}
private void Initialize(bool baseProperties = true)
{
// add the background view
{
BackgroundImageView = new UIImageView();
AddSubview(BackgroundImageView);
}
// add the main signature view
{
SignaturePadCanvas = new SignaturePadCanvasView();
SignaturePadCanvas.StrokeCompleted += (sender, e) =>
{
UpdateUi();
StrokeCompleted?.Invoke(this, EventArgs.Empty);
};
SignaturePadCanvas.Cleared += (sender, e) => Cleared?.Invoke(this, EventArgs.Empty);
AddSubview(SignaturePadCanvas);
}
// add the caption
{
Caption = new UILabel()
{
Text = "Sign here.",
Font = UIFont.BoldSystemFontOfSize(11f),
BackgroundColor = UIColor.Clear,
TextColor = UIColor.Gray,
TextAlignment = UITextAlignment.Center
};
AddSubview(Caption);
}
// add the signature line
{
SignatureLine = new UIView()
{
BackgroundColor = UIColor.Gray
};
AddSubview(SignatureLine);
}
// add the prompt
{
SignaturePrompt = new UILabel()
{
Text = "X",
Font = UIFont.BoldSystemFontOfSize(20f),
BackgroundColor = UIColor.Clear,
TextColor = UIColor.Gray
};
AddSubview(SignaturePrompt);
}
// add the clear label
{
ClearLabel = UIButton.FromType(UIButtonType.Custom);
ClearLabel.SetTitle("Clear", UIControlState.Normal);
ClearLabel.Font = UIFont.BoldSystemFontOfSize(11f);
ClearLabel.BackgroundColor = UIColor.Clear;
ClearLabel.SetTitleColor(UIColor.Gray, UIControlState.Normal);
AddSubview(ClearLabel);
// attach the "clear" command
ClearLabel.TouchUpInside += (sender, e) => Clear();
}
// clear / initialize the view
Clear();
}
private void Initialize(bool baseProperties = true)
{
// add the background view
{
BackgroundImageView = new UIImageView();
AddSubview(BackgroundImageView);
}
// add the main signature view
{
SignaturePadCanvas = new SignaturePadCanvasView();
SignaturePadCanvas.StrokeCompleted += delegate
{
OnSignatureStrokeCompleted();
};
SignaturePadCanvas.DblTapped += delegate
{
OnDoubleTapped();
};
SignaturePadCanvas.Cleared += delegate
{
OnSignatureCleared();
};
AddSubview(SignaturePadCanvas);
}
// add the caption
{
Caption = new UILabel()
{
BackgroundColor = UIColor.Clear,
TextAlignment = UITextAlignment.Center,
Font = UIFont.SystemFontOfSize(DefaultFontSize),
Text = DefaultCaptionText,
TextColor = SignaturePadDarkColor,
};
AddSubview(Caption);
}
// add the signature line
{
SignatureLine = new UIView()
{
BackgroundColor = SignaturePadDarkColor,
};
SignatureLineWidth = DefaultLineThickness;
SignatureLineSpacing = DefaultNarrowSpacing;
AddSubview(SignatureLine);
}
// add the prompt
{
SignaturePrompt = new UILabel()
{
BackgroundColor = UIColor.Clear,
Font = UIFont.BoldSystemFontOfSize(DefaultFontSize),
Text = DefaultPromptText,
TextColor = SignaturePadDarkColor,
};
AddSubview(SignaturePrompt);
}
// add the clear label
{
ClearLabel = UIButton.FromType(UIButtonType.Custom);
ClearLabel.BackgroundColor = UIColor.Clear;
ClearLabel.Font = UIFont.BoldSystemFontOfSize(DefaultFontSize);
ClearLabel.SetTitle(DefaultClearLabelText, UIControlState.Normal);
ClearLabel.SetTitleColor(SignaturePadDarkColor, UIControlState.Normal);
AddSubview(ClearLabel);
// attach the "clear" command
ClearLabel.TouchUpInside += delegate
{
OnClearTapped();
};
}
Padding = new UIEdgeInsets(DefaultWideSpacing, DefaultWideSpacing, DefaultNarrowSpacing, DefaultWideSpacing);
// clear / initialize the view
UpdateUi();
}
