public override void DidCropImageToRect(TOCropViewController cropViewController, CGRect cropRect, nint angle)
{
cropViewController.PresentingViewController.DismissViewController(true, null);
TOCropViewController owner;
_tcs.SetResult(_owner.TryGetTarget(out owner) ? cropViewController.FinalImage.UIImageToBytes() : null);
}
public override void ViewDidAppear(bool animated)
{
base.ViewDidAppear(animated);
try
{
if (_isShown)
{
return;
}
_isShown = true;
var image = new UIImage(NSData.FromArray(_image));
_image = null;
_selector = new CropViewDelegate(this, _page);
var picker = new TOCropViewController(image)
{
Delegate = _selector
};
PresentViewController(picker, false, null);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}
void Button_TouchUpInside(object sender, EventArgs e)
{
var cropVC = new TOCropViewController(TOCropViewCroppingStyle.Default, ImageView.Image);
cropVC.Delegate = new CropVCDelegate(this);
this.PresentViewController(cropVC, true, null);
}
public override void ViewDidAppear(bool animated)
{
base.ViewDidAppear(animated);
try
{
if (!IsShown)
{
IsShown = true;
UIImage image = new UIImage(NSData.FromArray(Image));
Image = null;
selector = new CropViewDelegate(this);
TOCropViewController picker = new TOCropViewController(image);
// Demo for Circular Cropped Image
//TOCropViewController picker = new TOCropViewController(TOCropViewCroppingStyle.Circular, image);
picker.Delegate = selector;
PresentViewController(picker, false, null);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}
public override void DidCropToImage(TOCropViewController cropViewController, UIImage image, CoreGraphics.CGRect cropRect, nint angle)
{
DidCrop = true;
try
{
if (image != null)
{
CroppedImage = image.AsPNG().ToArray();
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
finally
{
if (image != null)
{
image.Dispose();
image = null;
}
}
parent.DismissViewController(true, () => { Xamarin.Forms.Application.Current.MainPage.Navigation.PopModalAsync(); });
}
public override void DidCropToImage(TOCropViewController cropViewController, UIImage image, CoreGraphics.CGRect cropRect, nint angle)
{
IsCropped = true;
try
{
if (image != null)
{
_page.CroppedImage = image.AsJPEG().ToArray();
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
finally
{
if (image != null)
{
image.Dispose();
image = null;
}
CloseView();
}
}
public override void DidCropToImage(TOCropViewController cropViewController, UIImage image, CoreGraphics.CGRect cropRect, nint angle)
{
DidCrop = true;
try
{
if (image != null)
{
App.CroppedImage = image.AsPNG().ToArray();
}
}
catch (Exception ex) {
Debug.WriteLine(ex.Message);
}
finally
{
if (image != null)
{
image.Dispose();
image = null;
}
}
parent.DismissViewController(true, App.PopModal);
}
public void ShowFromFile(ImageCropper imageCropper, string imageFile)
{
UIImage image = UIImage.FromFile(imageFile);
TOCropViewController cropViewController;
if (imageCropper.CropShape == ImageCropper.CropShapeType.Oval)
{
cropViewController = new TOCropViewController(TOCropViewCroppingStyle.Circular, image);
}
else
{
cropViewController = new TOCropViewController(image);
}
if (imageCropper.AspectRatioX > 0 && imageCropper.AspectRatioY > 0)
{
cropViewController.AspectRatioPreset = TOCropViewControllerAspectRatioPreset.Custom;
cropViewController.ResetAspectRatioEnabled = false;
cropViewController.AspectRatioLockEnabled = true;
cropViewController.CustomAspectRatio = new CGSize(imageCropper.AspectRatioX, imageCropper.AspectRatioY);
}
cropViewController.OnDidCropToRect = (outImage, cropRect, angle) =>
{
Finalize(imageCropper, outImage);
};
cropViewController.OnDidCropToCircleImage = (outImage, cropRect, angle) =>
{
Finalize(imageCropper, outImage);
};
cropViewController.OnDidFinishCancelled = (cancelled) =>
{
imageCropper.Faiure?.Invoke();
UIApplication.SharedApplication.KeyWindow.RootViewController.DismissViewController(true, null);
};
//UIApplication.SharedApplication.KeyWindow.RootViewController.PresentViewController(cropViewController, true, null);
// Patch for Modal iOS: https://github.com/stormlion227/ImageCropper.Forms/issues/22
UIWindow window = UIApplication.SharedApplication.KeyWindow;
UIViewController viewController = window.RootViewController;
while (viewController.PresentedViewController != null)
{
viewController = viewController.PresentedViewController;
}
viewController.PresentViewController(cropViewController, true, null);
// end on iOS Modal patch
if (!string.IsNullOrWhiteSpace(imageCropper.PageTitle) && cropViewController.TitleLabel != null)
{
UILabel titleLabel = cropViewController.TitleLabel;
titleLabel.Text = imageCropper.PageTitle;
}
}
public override void DidCropImageToRect(TOCropViewController cropViewController, CGRect cropRect, nint angle)
{
cropViewController.PresentingViewController.DismissViewController(true, null);
ViewController owner;
if (_owner.TryGetTarget(out owner))
{
owner.ImageView.Image = cropViewController.FinalImage;
}
}
public Task <byte[]> CropImageFromOriginalToBytes(string filePath)
{
var image = UIImage.FromFile(filePath);
var viewController = new TOCropViewController(TOCropViewCroppingStyle.Default, image);
var ndelegate = new CropVcDelegate(viewController);
viewController.Delegate = ndelegate;
viewController.PresentUsingRootViewController();
var result = ndelegate.Task.ContinueWith(t => t).Unwrap();
return(result);
}
public void ShowFromFile(ImageCropper imageCropper, string imageFile)
{
UIImage image = UIImage.FromFile(imageFile);
TOCropViewController cropViewController;
if (imageCropper.CropShape == ImageCropper.CropShapeType.Oval)
{
cropViewController = new TOCropViewController(TOCropViewCroppingStyle.Circular, image);
}
else
{
cropViewController = new TOCropViewController(image);
}
cropViewController.DoneButtonTitle = imageCropper.CropButtonTitle;
cropViewController.CancelButtonTitle = imageCropper.CancelButtonTitle;
if (imageCropper.AspectRatioX > 0 && imageCropper.AspectRatioY > 0)
{
cropViewController.AspectRatioPreset = TOCropViewControllerAspectRatioPreset.Custom;
cropViewController.ResetAspectRatioEnabled = false;
cropViewController.AspectRatioLockEnabled = true;
cropViewController.CustomAspectRatio = new CGSize(imageCropper.AspectRatioX, imageCropper.AspectRatioY);
}
cropViewController.OnDidCropToRect = (outImage, cropRect, angle) =>
{
Finalize(imageCropper, outImage);
};
cropViewController.OnDidCropToCircleImage = (outImage, cropRect, angle) =>
{
Finalize(imageCropper, outImage);
};
cropViewController.OnDidFinishCancelled = (cancelled) =>
{
imageCropper.Faiure?.Invoke();
UIApplication.SharedApplication.KeyWindow.RootViewController.DismissViewController(true, null);
};
UIApplication.SharedApplication.KeyWindow.RootViewController.PresentViewController(cropViewController, true, null);
if (!string.IsNullOrWhiteSpace(imageCropper.PageTitle) && cropViewController.TitleLabel != null)
{
UILabel titleLabel = cropViewController.TitleLabel;
titleLabel.Text = imageCropper.PageTitle;
}
}
/// <summary>
/// On crop to rectangle complete
/// ---------------
/// NOTE:
/// As of 23/04/2018, the cropping library utilized (TOCropViewController) has the following open issue on GitHub:
/// https://github.com/TimOliver/TOCropViewController/issues/239
///
/// Steps to repro:
/// 1. Select a non-square image
/// 2. Zoom and/or pan on the image
/// 3. Click the reset button at the bottom (2nd button from the right)
/// 4. Click the done button
///
/// Expected:
/// cropViewController.FinalImage will be square
///
/// Result:
/// cropViewController.FinalImage will NOT be square:
/// FinalImage Width and FinalImage Height will differ by a pixel (from the repro attempts conducted)
///
/// Work around used:
///
/// [Let diff = absolute(FinalImage.Width - FinalImage.Height)]
///
/// 1. If {diff} > 1 px: throw error pop-up. This case is where the user
/// purposely dragged the rectangular image out and then hitting done.
/// Return from function.
///
/// 2. If 1px >= {diff} > 0px: set the outImageBitmap to a square cropping,
/// thus removing the {diff} offset on either the width or height
/// ---------------
/// </summary>
/// <param name="cropVC">TOCropViewController object</param>
/// <param name="cropRect">Rectangled cropped</param>
/// <param name="angle">Angle at which cropped</param>
public override void DidCropImageToRect(TOCropViewController cropViewController, CGRect cropRect, nint angle)
{
UIImage outImage = cropViewController.FinalImage;
SKBitmap outImageBitmap = outImage.ToSKBitmap();
nfloat width = outImage.Size.Width, height = outImage.Size.Height;
// Work-around epsilon
const float epsilon = 1.0f;
// Case 1 (See comment on work-around above)
if (Math.Abs(width - height) > epsilon)
{
// if it's a non-square image
var alert = UIAlertController.Create("Cropping Error",
"The AI model can only except a 1:1 aspect ratio. Please crop to a square.",
UIAlertControllerStyle.Alert);
// Add Actions
alert.AddAction(UIAlertAction.Create("OK", UIAlertActionStyle.Default, null));
// Present Alert
cropViewController.PresentViewController(alert, true, null);
return;
}
else if (width != height)
{
// Case 2 (See comment on work-around above)
SKBitmap image = outImage.ToSKBitmap();
int minDimension = (int)Math.Min(width, height);
// Crop to the minimum dimension
image.ExtractSubset(outImageBitmap, new SKRectI(0, 0, minDimension, minDimension));
}
// Get analysis storyboard
UIStoryboard analysisStoryboard = UIStoryboard.FromName("Analysis", null);
// Grab analysis view Controller reference
AnalysisViewController analysisViewController = analysisStoryboard.InstantiateInitialViewController() as AnalysisViewController;
analysisViewController.InputImage = outImage;
analysisViewController.ImageUrl = imageUrl;
analysisViewController.InputImageBitmap = outImageBitmap;
// Push analysis view controller onto stack
cropViewController.NavigationController.PushViewController(analysisViewController, true);
}
public Task <byte[]> CropImageFromOriginalToBytes(string filePath, CropAspect aspect = CropAspect.Custom)
{
var image = UIImage.FromFile(filePath);
//crop image
var viewController = new TOCropViewController(TOCropViewCroppingStyle.Default, image);
var ndelegate = new CropVcDelegate(viewController);
switch (aspect)
{
case CropAspect.Square:
viewController.AspectRatioLockEnabled = true;
viewController.AspectRatioPickerButtonHidden = true;
viewController.AspectRatioPreset = TOCropViewControllerAspectRatioPreset.Square;
break;
}
viewController.Delegate = ndelegate;
//show
viewController.PresentUsingRootViewController();
var result = ndelegate.Task.ContinueWith(t => t).Unwrap();
return(result);
}
public override void DidFinishCancelled(TOCropViewController cropViewController, bool cancelled)
{
parent.DismissViewController(true, () => { Xamarin.Forms.Application.Current.MainPage.Navigation.PopModalAsync(); });
}
public override void DidFinishCancelled(TOCropViewController cropViewController, bool cancelled)
{
parent.DismissViewController(true, App.PopModal);
}
public override void DidFinishCancelled(TOCropViewController cropViewController, bool cancelled)
{
//dissmiss viewcontroler
cropViewController.PresentingViewController.DismissViewController(true, null);
_tcs.SetResult(null);
}
public CropVcDelegate(TOCropViewController owner)
{
_owner = new WeakReference <TOCropViewController> (owner);
_tcs = new TaskCompletionSource <byte[]> ();
}
public override void DidFinishCancelled(TOCropViewController cropViewController, bool cancelled)
{
CloseView();
}
/*protected override void OnElementChanged(VisualElementChangedEventArgs e)
* {
* base.OnElementChanged(e);
*
* var page = e.NewElement as CropView;
* var view = NativeView;
*
* var label = new UILabel(new RectangleF(20, 40, 40, 40));
* label.AdjustsFontSizeToFitWidth = true;
* label.TextColor = UIColor.White;
* if (page != null)
* {
* label.Text = "this is test";
* }
*
* view.Add(label);
* }
*/
public override void ViewDidAppear(bool animated)
{
base.ViewDidAppear(animated);
try
{
if (!IsShown)
{
IsShown = true;
UIImage image = new UIImage(NSData.FromArray(Image));
Image = null;
selector = new CropViewDelegate(this);
TOCropViewController picker = new TOCropViewController(TOCropViewCroppingStyle.Default, image);
// Demo for Circular Cropped Image
//TOCropViewController picker = new TOCropViewController(TOCropViewCroppingStyle.Circular, image);
//picker.AspectRatioLockEnabled = false;
picker.ChildViewControllerForStatusBarHidden();
picker.AspectRatioPickerButtonHidden = true;
picker.RotateButtonsHidden = true;
picker.RotateClockwiseButtonHidden = true;
picker.AspectRatioLockEnabled = true;
picker.ResetAspectRatioEnabled = false;
//picker.AspectRatioPreset = TOCropViewControllerAspectRatioPreset.Original;
picker.Delegate = selector;
//picker.DidRotate(UIInterfaceOrientation.LandscapeRight);
//picker.ImageCropFrame = new CoreGraphics.CGRect(picker.ImageCropFrame.X, picker.ImageCropFrame.Y, picker.ImageCropFrame.Width, picker.ImageCropFrame.Height - 400);
//picker.Title = "this is test";
//picker.CropView.
//var size = picker.CropView.Bounds;
//picker.ImageCropFrame = new CoreGraphics.CGRect(size.X, size.Y, size.Width, size.Height - 200);
//picker.CropView.LargeContentTitle = "sljakskljslaJSLAJSLA";
//Title = "hakhdsdl";
/*UILabel label = new UILabel();
* label.Frame = new CoreGraphics.CGRect(0, 0, 150, 150);
* label.Text = "helloooo";
* label.TextColor = UIColor.Yellow;
* UIView view = new UIView();
* view.BackgroundColor = UIColor.Orange;
* view.ContentMode = UIViewContentMode.Bottom;
* view.Add(label);*/
//picker.Add(view);
//UINavigationController nav = new UINavigationController(picker);
//nav.Title = "djflkdjlfkdlkf";
//nav.colo
//nav.ModalPresentationStyle = UIModalPresentationStyle.Popover;//.BlurOverFullScreen;//.Automatic;//.PageSheet; // Whichever you prefer
//nav.NavigationBar.Frame = new CoreGraphics.CGRect(100, 100, 100, 100);
//nav.NavigationBar.BackgroundColor = UIColor.Red;
//nav.NavigationBar.BarTintColor = UIColor.Yellow;
picker.ModalPresentationStyle = UIModalPresentationStyle.Popover;
//picker.PreferredStatusBarStyle();
//picker.View = view;
//picker.Toolbar = new TOCropToolbar();
PresentViewController(picker, true, null);
//UILabel label = picker.TitleLabel;
var size = picker.CropView.Bounds;
//Heading.
UILabel labelHeading = new UILabel();
labelHeading.Frame = new CoreGraphics.CGRect(size.X, size.Height - 210, size.Width, 75);
labelHeading.Text = "Crop Image";
labelHeading.Font = UIFont.SystemFontOfSize(30);
labelHeading.TextAlignment = UITextAlignment.Center;
labelHeading.TextColor = UIColor.White;
//Sub Heading.
string text = Helper.Helper.SelectedIdentificatorText;
if (text == "ID")
{
text = "ID Card";
}
//text = "ID Card";
UILabel labelSubHeading = new UILabel();
labelSubHeading.Frame = new CoreGraphics.CGRect(size.X, size.Height - 200, size.Width, 170);
labelSubHeading.Text = $"Use the marker to mark the area around your card. So that we only see your {text}.";
labelSubHeading.Font = UIFont.SystemFontOfSize(20);
labelSubHeading.TextAlignment = UITextAlignment.Center;
labelSubHeading.TextColor = UIColor.White;
labelSubHeading.Lines = 3;
labelSubHeading.LineBreakMode = UILineBreakMode.WordWrap;
UIView view = new UIView();
view.Frame = new CoreGraphics.CGRect(size.X, size.Y, size.Width, 150);
view.ContentMode = UIViewContentMode.Bottom;
view.Add(labelHeading);
view.Add(labelSubHeading);
//picker.Title = "this is demo";
picker.Add(view);
//PresentViewController(picker, true, null);
//picker.CropView.AddSubview(view);
picker.CustomAspectRatio = new CoreGraphics.CGSize(600, 400);
picker.ModalPresentationStyle = UIModalPresentationStyle.Custom;
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}