public WebImage Crop(int top = 0, int left = 0, int bottom = 0, int right = 0)
{
if (top < 0)
{
throw new ArgumentOutOfRangeException(
"top",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
if (left < 0)
{
throw new ArgumentOutOfRangeException(
"left",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
if (bottom < 0)
{
throw new ArgumentOutOfRangeException(
"bottom",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
if (right < 0)
{
throw new ArgumentOutOfRangeException(
"right",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
CropTransformation crop = new CropTransformation(top, right, bottom, left);
_transformations.Add(crop);
return(this);
}
public ImageCropView()
{
HorizontalOptions = LayoutOptions.Center;
VerticalOptions = LayoutOptions.Center;
_crop = new CropTransformation();
_image = new CustomCachedImage()
{
LoadingDelay = 0,
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
InputTransparent = true,
Aspect = Aspect.Fill,
Transformations = new List <ITransformation>()
{
_crop
},
};
_root = new Grid()
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
InputTransparent = true,
Children =
{
_image
}
};
var pinchGesture = new PinchGestureRecognizer();
pinchGesture.PinchUpdated += PinchGesture_PinchUpdated;;
var panGesture = new PanGestureRecognizer();
panGesture.PanUpdated += PanGesture_PanUpdated;
GestureRecognizers.Clear();
GestureRecognizers.Add(pinchGesture);
GestureRecognizers.Add(panGesture);
_pinchObservable = Observable.FromEventPattern <PinchGestureUpdatedEventArgs>(pinchGesture, "PinchUpdated")
.Select(v => v.EventArgs).Where(v => v.Status == GestureStatus.Running);
_panObservable = Observable.FromEventPattern <PanUpdatedEventArgs>(panGesture, "PanUpdated")
.Select(v => v.EventArgs).Where(v => v.StatusType == GestureStatus.Running);
HandlePreviewTransformations(null, PreviewTransformations);
Content = _root;
ResetCrop();
SetDelay();
}
public ImageCropView()
{
HorizontalOptions = LayoutOptions.Center;
VerticalOptions = LayoutOptions.Center;
_crop = new CropTransformation();
_image = new CustomCachedImage()
{
LoadingDelay = 0,
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
InputTransparent = true,
Aspect = Aspect,
Transformations = new List <ITransformation>()
{
_crop
},
FadeAnimationEnabled = false,
};
SetupImageView(_image);
_root = new Grid()
{
HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.FillAndExpand,
InputTransparent = true,
Children =
{
_image
}
};
_intervalThrottle = new IntervalThrottle(Delay,
_image.LoadImage, _image.LoadImage, _image.LoadRefinedImage);
_pinchGesture = new PinchGestureRecognizer();
_pinchGesture.PinchUpdated += PinchGesture_PinchUpdated;;
_panGesture = new PanGestureRecognizer();
_panGesture.PanUpdated += PanGesture_PanUpdated;
GestureRecognizers.Clear();
GestureRecognizers.Add(_pinchGesture);
GestureRecognizers.Add(_panGesture);
HandlePreviewTransformations(null, PreviewTransformations);
Content = _root;
ResetCrop();
}
public WebImage Crop(int top = 0, int left = 0, int bottom = 0, int right = 0) {
if (top < 0) {
throw new ArgumentOutOfRangeException(
"top",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
if (left < 0) {
throw new ArgumentOutOfRangeException(
"left",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
if (bottom < 0) {
throw new ArgumentOutOfRangeException(
"bottom",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
if (right < 0) {
throw new ArgumentOutOfRangeException(
"right",
String.Format(CultureInfo.InvariantCulture, CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
CropTransformation crop = new CropTransformation(top, right, bottom, left);
_transformations.Add(crop);
return this;
}
