private void Initialize()
{
var grid = new Grid();
inkPresenter = new InkPresenter();
inkPresenter.SetValue(Grid.HorizontalAlignmentProperty, HorizontalAlignment.Stretch);
inkPresenter.SetValue(Grid.VerticalAlignmentProperty, VerticalAlignment.Stretch);
inkPresenter.Background = new SolidColorBrush(Colors.Transparent);
grid.Children.Add(inkPresenter);
inkPresenter.MouseLeftButtonDown += OnMouseDown;
inkPresenter.MouseMove += OnMouseMove;
inkPresenter.MouseLeftButtonUp += OnMouseUp;
inkPresenter.LostMouseCapture += OnMouseLost;
// get some defaults
var settings = new ImageConstructionSettings();
settings.ApplyDefaults();
StrokeWidth = settings.StrokeWidth.Value;
StrokeColor = settings.StrokeColor.Value;
HorizontalContentAlignment = HorizontalAlignment.Stretch;
VerticalContentAlignment = VerticalAlignment.Stretch;
Content = grid;
}
private void Initialize()
{
var grid = new Grid();
inkPresenter = new InkPresenter();
inkPresenter.ClipToBounds = true;
inkPresenter.StrokeCompleted += OnStrokeCompleted;
inkPresenter.SetValue(Grid.HorizontalAlignmentProperty, HorizontalAlignment.Stretch);
inkPresenter.SetValue(Grid.VerticalAlignmentProperty, VerticalAlignment.Stretch);
grid.Children.Add(inkPresenter);
// get some defaults
var settings = new ImageConstructionSettings();
settings.ApplyDefaults();
StrokeWidth = settings.StrokeWidth.Value;
StrokeColor = settings.StrokeColor.Value;
HorizontalContentAlignment = HorizontalAlignment.Stretch;
VerticalContentAlignment = VerticalAlignment.Stretch;
Content = grid;
IsEnabledChanged += delegate
{
inkPresenter.IsInputEnabled = IsEnabled;
};
}
private void Initialize()
{
var grid = new Grid();
inkCanvas = new InkCanvas();
inkCanvas.SetValue(Grid.HorizontalAlignmentProperty, HorizontalAlignment.Stretch);
inkCanvas.SetValue(Grid.VerticalAlignmentProperty, VerticalAlignment.Stretch);
grid.Children.Add(inkCanvas);
inkPresenter = inkCanvas.InkPresenter;
inkPresenter.StrokesCollected += (sender, e) => OnStrokeCompleted();
inkPresenter.InputDeviceTypes = CoreInputDeviceTypes.Touch | CoreInputDeviceTypes.Pen | CoreInputDeviceTypes.Mouse;
// get some defaults
var settings = new ImageConstructionSettings();
settings.ApplyDefaults();
StrokeWidth = settings.StrokeWidth.Value;
StrokeColor = settings.StrokeColor.Value;
HorizontalContentAlignment = HorizontalAlignment.Stretch;
VerticalContentAlignment = VerticalAlignment.Stretch;
Content = grid;
IsEnabledChanged += delegate
{
inkPresenter.IsInputEnabled = IsEnabled;
};
}
private bool GetImageConstructionArguments(ImageConstructionSettings settings, out NativeSize scale, out NativeRect signatureBounds, out NativeSize imageSize, out float strokeWidth, out NativeColor strokeColor, out NativeColor backgroundColor)
{
settings.ApplyDefaults((float)StrokeWidth, StrokeColor);
if (IsBlank || settings.DesiredSizeOrScale?.IsValid != true)
{
scale = default(NativeSize);
signatureBounds = default(NativeRect);
imageSize = default(NativeSize);
strokeWidth = default(float);
strokeColor = default(NativeColor);
backgroundColor = default(NativeColor);
return(false);
}
var sizeOrScale = settings.DesiredSizeOrScale.Value;
var viewSize = this.GetSize();
imageSize = sizeOrScale.GetSize((float)viewSize.Width, (float)viewSize.Height);
scale = sizeOrScale.GetScale((float)imageSize.Width, (float)imageSize.Height);
if (settings.ShouldCrop == true)
{
signatureBounds = GetSignatureBounds(settings.Padding.Value);
if (sizeOrScale.Type == SizeOrScaleType.Size)
{
// if a specific size was set, scale to that
var scaleX = imageSize.Width / (float)signatureBounds.Width;
var scaleY = imageSize.Height / (float)signatureBounds.Height;
if (sizeOrScale.KeepAspectRatio)
{
scaleX = scaleY = Math.Min((float)scaleX, (float)scaleY);
}
scale = new NativeSize((float)scaleX, (float)scaleY);
}
else if (sizeOrScale.Type == SizeOrScaleType.Scale)
{
imageSize.Width = signatureBounds.Width * scale.Width;
imageSize.Height = signatureBounds.Height * scale.Height;
}
}
else
{
signatureBounds = new NativeRect(0, 0, viewSize.Width, viewSize.Height);
}
strokeWidth = settings.StrokeWidth.Value;
strokeColor = (NativeColor)settings.StrokeColor;
backgroundColor = (NativeColor)settings.BackgroundColor;
return(true);
}
/// <summary>
/// Create an encoded image stream of the currently drawn signature using the specified settings.
/// </summary>
public Task <Stream> GetImageStreamAsync(SignatureImageFormat format, ImageConstructionSettings settings)
{
NativeSize scale;
NativeRect signatureBounds;
NativeSize imageSize;
float strokeWidth;
NativeColor strokeColor;
NativeColor backgroundColor;
if (GetImageConstructionArguments(settings, out scale, out signatureBounds, out imageSize, out strokeWidth, out strokeColor, out backgroundColor))
{
return(GetImageStreamInternal(format, scale, signatureBounds, imageSize, strokeWidth, strokeColor, backgroundColor));
}
return(Task.FromResult <Stream> (null));
}
/// <summary>
/// Create an image of the currently drawn signature using the specified settings.
/// </summary>
public NativeImage GetImage(ImageConstructionSettings settings)
{
NativeSize scale;
NativeRect signatureBounds;
NativeSize imageSize;
float strokeWidth;
NativeColor strokeColor;
NativeColor backgroundColor;
if (GetImageConstructionArguments(settings, out scale, out signatureBounds, out imageSize, out strokeWidth, out strokeColor, out backgroundColor))
{
return(GetImageInternal(scale, signatureBounds, imageSize, strokeWidth, strokeColor, backgroundColor));
}
return(null);
}
private void Initialize()
{
inkPresenter = new InkPresenter();
inkPresenter.ClipToBounds = true;
inkPresenter.StrokeCompleted += OnStrokeCompleted;
inkPresenter.SetValue(Grid.HorizontalAlignmentProperty, Windows.UI.Xaml.HorizontalAlignment.Stretch);
inkPresenter.SetValue(Grid.VerticalAlignmentProperty, Windows.UI.Xaml.VerticalAlignment.Stretch);
Children.Add(inkPresenter);
// get some defaults
var settings = new ImageConstructionSettings();
settings.ApplyDefaults();
StrokeWidth = settings.StrokeWidth.Value;
StrokeColor = settings.StrokeColor.Value;
}
private void Initialize()
{
inkPresenter = new InkPresenter(Context)
{
LayoutParameters = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MatchParent, FrameLayout.LayoutParams.MatchParent)
};
inkPresenter.StrokeCompleted += OnStrokeCompleted;
AddView(inkPresenter);
// get some defaults
var settings = new ImageConstructionSettings();
settings.ApplyDefaults();
StrokeWidth = settings.StrokeWidth.Value;
StrokeColor = settings.StrokeColor.Value;
}
private void Initialize(bool baseProperties = true)
{
inkPresenter = new InkPresenter(Bounds)
{
AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight,
};
inkPresenter.StrokeCompleted += OnStrokeCompleted;
AddSubview(inkPresenter);
// get some defaults
var settings = new ImageConstructionSettings();
settings.ApplyDefaults();
StrokeWidth = settings.StrokeWidth.Value;
StrokeColor = settings.StrokeColor;
}
/// <summary>
/// Create an encoded image of the currently drawn signature using the specified settings.
/// </summary>
public Task <Stream> GetImageStreamAsync(SignatureImageFormat format, ImageConstructionSettings settings)
{
return(SignaturePadCanvas.GetImageStreamAsync(format, settings));
}
/// <summary>
/// Create an image of the currently drawn signature using the specified settings.
/// </summary>
public WriteableBitmap GetImage(ImageConstructionSettings settings)
{
return(SignaturePadCanvas.GetImage(settings));
}
/// <summary>
/// Create an image of the currently drawn signature using the specified settings.
/// </summary>
public UIImage GetImage(ImageConstructionSettings settings)
{
return(SignaturePadCanvas.GetImage(settings));
}