public UIImage ProcessedImage()
{
nfloat scale = UIScreen.MainScreen.Scale;
CGImage imageRef = _originalImage.CGImage;
if (imageRef == null)
{
return(null);
}
var bytesPerRow = 0;
var bitsPerComponent = imageRef.BitsPerComponent;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
var bitmapInfo = imageRef.BitmapInfo;
CGBitmapContext context = new CGBitmapContext(null,
(nint)(_targetSize.Width * scale),
(nint)(_targetSize.Height * scale),
bitsPerComponent,
bytesPerRow,
colorSpace,
bitmapInfo);
colorSpace.Dispose();
if (context == null)
{
imageRef.Dispose();
return(null);
}
CGRect targetFrame = LocalCropFrame();
context.InterpolationQuality = CGInterpolationQuality.High;
context.SetBlendMode(CGBlendMode.Copy);
context.DrawImage(targetFrame, imageRef);
var contextImage = context.ToImage();
UIImage finalImage = null;
context.Dispose();
if (contextImage != null)
{
finalImage = UIImage.FromImage(contextImage, scale, UIImageOrientation.Up);
contextImage.Dispose();
}
imageRef.Dispose();
return(finalImage);
}
/// <summary>
/// Creates grayscaled image from existing image.
/// </summary>
/// <param name="oldImage">Image to convert.</param>
/// <returns>Returns grayscaled image.</returns>
public static UIImage GrayscaleImage(UIImage oldImage)
{
var imageRect = new RectangleF(PointF.Empty, (SizeF)oldImage.Size);
CGImage grayImage;
// Create gray image.
using (CGColorSpace colorSpace = CGColorSpace.CreateDeviceGray()) {
using (var context = new CGBitmapContext(IntPtr.Zero, (int)imageRect.Width, (int)imageRect.Height, 8, 0, colorSpace, CGImageAlphaInfo.None)) {
context.DrawImage(imageRect, oldImage.CGImage);
grayImage = context.ToImage();
}
}
// Create mask for transparent areas.
using (var context = new CGBitmapContext(IntPtr.Zero, (int)imageRect.Width, (int)imageRect.Height, 8, 0, CGColorSpace.Null, CGBitmapFlags.Only)) {
context.DrawImage(imageRect, oldImage.CGImage);
CGImage alphaMask = context.ToImage();
var newImage = new UIImage(grayImage.WithMask(alphaMask));
grayImage.Dispose();
alphaMask.Dispose();
return(newImage);
}
}
public static UIImage CropByX(this UIImage image, nfloat x)
{
UIGraphics.BeginImageContextWithOptions(new CGSize(image.Size.Width - x, image.Size.Height), false, 0);
UIImage result = null;
using (CGContext context = UIGraphics.GetCurrentContext())
{
context.TranslateCTM(0, image.Size.Height);
context.ScaleCTM(1, -1);
context.DrawImage(new CGRect(CGPoint.Empty, image.Size), image.CGImage);
using (CGImage img = context.AsBitmapContext().ToImage())
{
result = new UIImage(img, image.CurrentScale, UIImageOrientation.Up);
img.Dispose();
}
context.Dispose();
UIGraphics.EndImageContext();
}
return(result);
}
private void ReadTask()
{
results = barcodeReader.DecodeImage(uiImage, "", out error);
if (results != null && results.Length > 0)
{
for (int i = 0; i < results.Length; i++)
{
if (i == 0)
{
result = "Code[1]: " + results[0].BarcodeText;
}
else
{
result = result + "\n\n" + "Code[" + (i + 1) + "]: " + results[i].BarcodeText;
}
}
//Console.WriteLine(results[0].BarcodeText);
}
else
{
result = "";
}
DispatchQueue.MainQueue.DispatchAsync(update);
context.Dispose();
cgImage.Dispose();
uiImage.Dispose();
ready = true;
}
public Image <Bgr, byte>?Grab()
{
_handle = IntPtr.Zero;
try {
_handle = CGDisplayCreateImage(_displayId);
var cimg = new CGImage(_handle);
var img = new Mat((int)cimg.Height, (int)cimg.Width, DepthType.Cv8U, 4);
var output = new Mat((int)cimg.Height, (int)cimg.Width, DepthType.Cv8U, 3);
var csRef = cimg.ColorSpace;
var contextRef = new CGBitmapContext(img.DataPointer, cimg.Width, cimg.Height, 8,
img.Step, csRef, CGImageAlphaInfo.PremultipliedLast);
contextRef.DrawImage(new CGRect(0, 0, cimg.Width, cimg.Height), cimg);
CvInvoke.CvtColor(img, output, ColorConversion.Rgba2Bgr);
var ti = output.ToImage <Bgr, byte>();
output.Dispose();
img.Dispose();
cimg.Dispose();
if (_handle != IntPtr.Zero)
{
CFRelease(_handle);
}
var sized = ti.Resize(640, 480, Inter.Nearest);
ti.Dispose();
return(sized);
} catch (Exception e) {
Log.Warning("Matt is exceptional: " + e);
}
return(null);
} // End Sub CreateImage
public static UIImage MakeRoundCornerImage(UIImage img, int cornerWidth, int cornerHeight)
{
UIImage newImage = null;
if (null != img)
{
var w = img.Size.Width;
var h = img.Size.Height;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
CGContext context = new CGBitmapContext(null, (int)w, (int)h, 8, (int)(4 * w), colorSpace, CGImageAlphaInfo.PremultipliedFirst);
context.BeginPath();
var rect = new RectangleF(0, 0, img.Size.Width, img.Size.Height);
AddRoundedRectToPath(context, rect, cornerWidth, cornerHeight);
context.ClosePath();
context.Clip();
var cgImage = img.CGImage;
context.DrawImage(new RectangleF(0, 0, w, h), cgImage);
cgImage.Dispose();
CGImage imageMasked = ((CGBitmapContext)context).ToImage();
context.Dispose();
colorSpace.Dispose();
newImage = new UIImage(imageMasked);
imageMasked.Dispose();
}
return(newImage);
}
void Apply(CGImage filteredImage, UIImage defaultImage, bool dirty)
{
if (filteredImage != null)
{
ImageView.Image = new UIImage(filteredImage);
filteredImage.Dispose();
}
else if (dirty)
{
ImageView.Image = defaultImage;
}
filtering = false;
TryStopIndicatorForFilter();
if (needsFilter)
{
needsFilter = false;
UpdateImage(true, false);
}
UpdateActivity();
UpdateConstraints();
UpdateZoom();
}
public override void LoadTexture(Texture t)
{
string path = NSBundle.MainBundle.PathForResource(Path.GetFileNameWithoutExtension(t.Name), "png");
CGDataProvider dataProvider = null;
CGImage image = null;
try
{
dataProvider = CGDataProvider.FromFile(path);
image = CGImage.FromPNG(dataProvider, null, false, CGColorRenderingIntent.Default);
LoadTextureFromImage(t, image);
}
catch (Exception)
{
t.Failed = true;
return;
}
finally
{
if (dataProvider != null)
{
dataProvider.Dispose();
}
if (image != null)
{
image.Dispose();
}
}
}
public void Dispose()
{
if (cgdata != null)
{
cgdata.Dispose();
cgdata = null;
}
if (cgimage != null)
{
cgimage.Dispose();
cgimage = null;
}
if (image != null)
{
image.Dispose();
image = null;
}
if (colorSpace != null)
{
colorSpace.Dispose();
colorSpace = null;
}
//if (bits != IntPtr.Zero)
// Marshal.FreeHGlobal (bits);
bits = null;
}
internal static async Task <StorageItemThumbnail> CreateVideoThumbnailAsync(StorageFile file)
{
AVAsset asset = AVUrlAsset.FromUrl(NSUrl.FromFilename(file.Path));
AVAssetImageGenerator generator = AVAssetImageGenerator.FromAsset(asset);
generator.AppliesPreferredTrackTransform = true;
NSError error;
CMTime actualTime;
CMTime time = CMTime.FromSeconds(asset.Duration.Seconds / 2, asset.Duration.TimeScale);
CGImage image = generator.CopyCGImageAtTime(time, out actualTime, out error);
#if __MAC__
NSMutableData buffer = new NSMutableData();
CGImageDestination dest = CGImageDestination.Create(buffer, UTType.JPEG, 1, null);
dest.AddImage(image);
return(new StorageItemThumbnail(buffer.AsStream()));
#else
UIImage image2 = UIImage.FromImage(image);
image.Dispose();
UIImage image3 = image2.Scale(new CGSize(240, 240));
image2.Dispose();
return(new StorageItemThumbnail(image3.AsJPEG().AsStream()));
#endif
}
public static UIImage MakeUIImageFromCIImage(this CIImage ciImage)
{
CIContext context = CIContext.Create();
CGImage cgImage = context.CreateCGImage(ciImage, ciImage.Extent);//[context createCGImage: ciImage fromRect:[ciImage extent]];
UIImage uiImage = new UIImage(cgImage);
cgImage.Dispose();
return(uiImage);
}
public void Dispose()
{
if (!disposed)
{
if (cgImage != null)
{
cgImage.Dispose();
}
disposed = true;
}
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
if (NativeCGImage != null)
{
NativeCGImage.Dispose();
NativeCGImage = null;
}
bitmapBlock = IntPtr.Zero;
}
base.Dispose(disposing);
}
private void Dispose(bool disposing)
{
if (!disposed)
{
if (disposing)
{
if (cgImage != null)
{
cgImage.Dispose();
}
}
disposed = true;
}
}
public void Dispose()
{
if (Address == IntPtr.Zero)
{
return;
}
var nfo = (int)CGBitmapFlags.ByteOrder32Big | (int)CGImageAlphaInfo.PremultipliedLast;
CGImage image = null;
try
{
using (var colorSpace = CGColorSpace.CreateDeviceRGB())
using (var bContext = new CGBitmapContext(Address, Width, Height, 8, Width * 4,
colorSpace, (CGImageAlphaInfo)nfo))
image = bContext.ToImage();
lock (_view.SyncRoot)
{
if (!_isDeferred)
{
using (var nscontext = NSGraphicsContext.CurrentContext)
using (var context = nscontext.GraphicsPort)
{
context.SetFillColor(255, 255, 255, 255);
context.FillRect(new CGRect(default(CGPoint), _view.LogicalSize));
context.TranslateCTM(0, _view.LogicalSize.Height - _logicalSize.Height);
context.DrawImage(new CGRect(default(CGPoint), _logicalSize), image);
context.Flush();
nscontext.FlushGraphics();
}
}
}
}
finally
{
if (image != null)
{
if (!_isDeferred)
{
image.Dispose();
}
else
{
_view.SetBackBufferImage(new SavedImage(image, _logicalSize));
}
}
Marshal.FreeHGlobal(Address);
Address = IntPtr.Zero;
}
}
private void BackgroundAnimationUp()
{
if (_mainBackground != null)
{
_view.BackgroundColor = _mainBackground;
_mainBackground.Dispose();
_mainBackground = null;
}
else if (_mainBackgroundImage != null)
{
_view.Layer.Contents = _mainBackgroundImage;
_mainBackgroundImage.Dispose();
_mainBackgroundImage = null;
}
}
public static byte[] grabScreenAsPNG(CGPoint containing)
{
// Grab screen
// Mac stuff from http://stackoverflow.com/questions/18851247/screen-capture-on-osx-using-monomac
NSScreen screen = NSScreen.MainScreen;
if ((containing.X >= 0) && (containing.Y >= 0))
{
int idx = 0;
bool found = false;
while (!found && (idx < NSScreen.Screens.Length))
{
if (NSScreen.Screens[idx].Frame.Contains(containing))
{
found = true;
screen = NSScreen.Screens[idx];
}
idx++;
}
}
//System.Drawing.RectangleF bounds = new RectangleF(0,0,screen.Frame.GetMaxX(),screen.Frame.GetMaxY());
CGRect bounds = new CGRect((float)screen.Frame.GetMinX(), (float)screen.Frame.GetMinY(), (float)screen.Frame.GetMaxX(), (float)screen.Frame.GetMaxY());
//System.Drawing.Image si2;
//NSImage si2;
// CGImage screenImage = MonoMac.CoreGraphics.CGImage.ScreenImage(0,bounds);
screenImage = ScreenImage2(0, bounds, CGWindowListOption.All, CGWindowImageOption.Default);
#pragma warning disable XS0001 // Find usages of mono todo items
/*using(NSBitmapImageRep imageRep = new NSBitmapImageRep(screenImage))
* {
* NSDictionary properties = NSDictionary.FromObjectAndKey(new NSNumber(1.0), new NSString("NSImageCompressionFactor"));
* using(NSData tiffData = imageRep.RepresentationUsingTypeProperties(NSBitmapImageFileType.Png, properties))
* {
*
* using (var ms = new MemoryStream())
*
* {
* tiffData.AsStream().CopyTo(ms);
* si2 = NSImage.FromStream(ms);
* //si2 = System.Drawing.Image.FromStream (ms, true);
* }
* }
* }*/
NSBitmapImageRep si2 = new NSBitmapImageRep(screenImage);
int newHeight = (int)((si2.Size.Height * imgWidth) / si2.Size.Width);
CGSize destSize = new CGSize(imgWidth, newHeight);
NSImage resized2 = new NSImage(destSize);
resized2.LockFocus();
CGRect sz = new CGRect(0, 0, imgWidth, newHeight);
//si2.DrawInRect(sz, new CGRect(0, 0, si2.Size.Width, si2.Size.Height), NSCompositingOperation.SourceOver, 1);
si2.DrawInRect(sz);
resized2.UnlockFocus();
resized2.Size = destSize;
//Bitmap resized = new Bitmap(imgWidth, newHeight, PixelFormat.Format24bppRgb);
//Graphics g = Graphics.FromImage (resized);
//g.DrawImage (si2, 0, 0, imgWidth, newHeight);
NSBitmapImageRep newRep = new NSBitmapImageRep(resized2.AsCGImage(ref sz, null, null));
NSData pngData = newRep.RepresentationUsingTypeProperties(NSBitmapImageFileType.Png);
screenImage.Dispose();
byte[] result = null;
result = pngData.ToArray();
//using (MemoryStream stream = new MemoryStream())
//{
//
//
// resized.Save(stream, ImageFormat.Png);
// result = stream.ToArray();
//}
return(result);
}
void SetFrozenImageNeedsUpdate()
{
frozenImage?.Dispose();
frozenImage = null;
}
private void dispose(bool disposing)
{
_uiImage?.Dispose();
_cgImage?.Dispose();
}
void Apply(CGImage filteredImage, UIImage defaultImage, bool dirty)
{
if (filteredImage != null) {
ImageView.Image = new UIImage (filteredImage);
filteredImage.Dispose ();
} else if (dirty) {
ImageView.Image = defaultImage;
}
filtering = false;
TryStopIndicatorForFilter ();
if (needsFilter) {
needsFilter = false;
UpdateImage (true, false);
}
UpdateActivity ();
UpdateConstraints ();
UpdateZoom ();
}
/// <summary>
/// Scales the and rotate image view.
/// </summary>
/// <returns>The and rotate image view.</returns>
/// <param name="imageIn">Image in.</param>
/// <param name="orIn">Or in.</param>
public static UIImage ScaleAndRotateImageView(UIImage imageIn, UIImageOrientation orIn)
{
float kMaxResolution = 1024;
UIImage imageCopy = imageIn;
try
{
CGImage imgRef = imageIn.CGImage;
imageIn.Dispose();
imageIn = null;
float width = imgRef.Width;
float height = imgRef.Height;
Debug.WriteLine(string.Format("ScaleAndRotateImageView - line# {0}", 29));
CGAffineTransform transform = CGAffineTransform.MakeIdentity();
RectangleF bounds = new RectangleF(0, 0, width, height);
if (width > kMaxResolution || height > kMaxResolution)
{
float ratio = width / height;
if (ratio > 1)
{
bounds.Width = kMaxResolution;
bounds.Height = bounds.Width / ratio;
}
else
{
bounds.Height = kMaxResolution;
bounds.Width = bounds.Height * ratio;
}
}
float scaleRatio = bounds.Width / width;
SizeF imageSize = new SizeF(width, height);
UIImageOrientation orient = orIn;
float boundHeight;
Debug.WriteLine(string.Format("ScaleAndRotateImageView - line# {0}", 53));
switch (orient)
{
case UIImageOrientation.Up: //EXIF = 1
transform = CGAffineTransform.MakeIdentity();
break;
case UIImageOrientation.UpMirrored: //EXIF = 2
transform = CGAffineTransform.MakeTranslation(imageSize.Width, 0f);
transform = CGAffineTransform.MakeScale(-1.0f, 1.0f);
break;
case UIImageOrientation.Down: //EXIF = 3
transform = CGAffineTransform.MakeTranslation(imageSize.Width, imageSize.Height);
transform = CGAffineTransform.Rotate(transform, (float)Math.PI);
break;
case UIImageOrientation.DownMirrored: //EXIF = 4
transform = CGAffineTransform.MakeTranslation(0f, imageSize.Height);
transform = CGAffineTransform.MakeScale(1.0f, -1.0f);
break;
case UIImageOrientation.LeftMirrored: //EXIF = 5
boundHeight = bounds.Height;
bounds.Height = bounds.Width;
bounds.Width = boundHeight;
transform = CGAffineTransform.MakeTranslation(imageSize.Height, imageSize.Width);
transform = CGAffineTransform.MakeScale(-1.0f, 1.0f);
transform = CGAffineTransform.Rotate(transform, 3.0f * (float)Math.PI / 2.0f);
break;
case UIImageOrientation.Left: //EXIF = 6
boundHeight = bounds.Height;
bounds.Height = bounds.Width;
bounds.Width = boundHeight;
transform = CGAffineTransform.MakeTranslation(0.0f, imageSize.Width);
transform = CGAffineTransform.Rotate(transform, 3.0f * (float)Math.PI / 2.0f);
break;
case UIImageOrientation.RightMirrored: //EXIF = 7
boundHeight = bounds.Height;
bounds.Height = bounds.Width;
bounds.Width = boundHeight;
transform = CGAffineTransform.MakeScale(-1.0f, 1.0f);
transform = CGAffineTransform.Rotate(transform, (float)Math.PI / 2.0f);
break;
case UIImageOrientation.Right: //EXIF = 8
boundHeight = bounds.Height;
bounds.Height = bounds.Width;
bounds.Width = boundHeight;
transform = CGAffineTransform.MakeTranslation(imageSize.Height, 0.0f);
transform = CGAffineTransform.Rotate(transform, (float)Math.PI / 2.0f);
break;
default:
//throw new Exception("Invalid image orientation");
Debug.WriteLine(string.Format("ScaleAndRotateImageView Invalid image orientation - line# {0}", 110));
break;
}
try
{
Debug.WriteLine(string.Format("ScaleAndRotateImageView - line# {0}", 115));
UIGraphics.BeginImageContext(bounds.Size);
CGContext context = UIGraphics.GetCurrentContext();
if (orient == UIImageOrientation.Right || orient == UIImageOrientation.Left)
{
context.ScaleCTM(-scaleRatio, scaleRatio);
context.TranslateCTM(-height, 0);
}
else
{
context.ScaleCTM(scaleRatio, -scaleRatio);
context.TranslateCTM(0, -height);
}
Debug.WriteLine(string.Format("ScaleAndRotateImageView - line# {0}", 130));
context.ConcatCTM(transform);
context.DrawImage(new RectangleF(0, 0, width, height), imgRef);
// added context dispose - to free memory used by picture image
imgRef.Dispose();
imgRef = null;
imageCopy.Dispose();
imageCopy = null;
imageCopy = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
// added context dispose - to free memory used by the graphics context
context.Dispose();
context = null;
imageIn = null;
}
catch (Exception ex)
{
Debug.WriteLine("Exception Occured in ScaleAndRotateImageView - line # 164 method due to " + ex.Message);
}
}
catch (Exception ex)
{
Debug.WriteLine("Exception Occured in ScaleAndRotateImageView - line # 169 method due to " + ex.Message);
}
return(imageCopy);
}
public void SetOriginalImage(UIImage originalImage, CGRect cropFrame)
{
LoadIndicator.StartAnimating();
InvokeOnMainThread(() =>
{
CGImage imageRef = originalImage.CGImage;
UIImageOrientation imageOrientation = originalImage.Orientation;
if (imageRef == null)
{
return;
}
var bytesPerRow = 0;
var width = imageRef.Width;
var height = imageRef.Height;
var bitsPerComponent = imageRef.BitsPerComponent;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
CGBitmapFlags bitmapInfo = imageRef.BitmapInfo;
switch (imageOrientation)
{
case UIImageOrientation.RightMirrored:
case UIImageOrientation.LeftMirrored:
case UIImageOrientation.Right:
case UIImageOrientation.Left:
width = imageRef.Height;
height = imageRef.Width;
break;
default:
break;
}
CGSize imageSize = new CGSize(width, height);
CGBitmapContext context = new CGBitmapContext(null,
width,
height,
bitsPerComponent,
bytesPerRow,
colorSpace,
bitmapInfo);
colorSpace.Dispose();
if (context == null)
{
imageRef.Dispose();
return;
}
switch (imageOrientation)
{
case UIImageOrientation.RightMirrored:
case UIImageOrientation.Right:
context.TranslateCTM(imageSize.Width / 2, imageSize.Height / 2);
context.RotateCTM(-((nfloat)Math.PI / 2));
context.TranslateCTM(-imageSize.Height / 2, -imageSize.Width / 2);
break;
case UIImageOrientation.LeftMirrored:
case UIImageOrientation.Left:
context.TranslateCTM(imageSize.Width / 2, imageSize.Height / 2);
context.RotateCTM((nfloat)(Math.PI / 2));
context.TranslateCTM(-imageSize.Height / 2, -imageSize.Width / 2);
break;
case UIImageOrientation.Down:
case UIImageOrientation.DownMirrored:
context.TranslateCTM(imageSize.Width / 2, imageSize.Height / 2);
context.RotateCTM((nfloat)Math.PI);
context.TranslateCTM(-imageSize.Width / 2, -imageSize.Height / 2);
break;
default:
break;
}
context.InterpolationQuality = CGInterpolationQuality.High;
context.SetBlendMode(CGBlendMode.Copy);
context.DrawImage(new CGRect(0, 0, imageRef.Width, imageRef.Height), imageRef);
CGImage contextImage = context.ToImage();
context.Dispose();
if (contextImage != null)
{
_originalImage = UIImage.FromImage(contextImage, originalImage.CurrentScale, UIImageOrientation.Up);
contextImage.Dispose();
}
imageRef.Dispose();
BeginInvokeOnMainThread(() =>
{
CGSize convertedImageSize = new CGSize(_originalImage.Size.Width / _cropSizeRatio,
_originalImage.Size.Height / _cropSizeRatio);
ImageView.Alpha = 0;
ImageView.Image = _originalImage;
CGSize sampleImageSize = new CGSize(Math.Max(convertedImageSize.Width, ScrollView.Frame.Size.Width),
Math.Max(convertedImageSize.Height, ScrollView.Frame.Size.Height));
ScrollView.MinimumZoomScale = 1;
ScrollView.MaximumZoomScale = 1;
ScrollView.ZoomScale = 1;
ImageView.Frame = new CGRect(0, 0, convertedImageSize.Width, convertedImageSize.Height);
nfloat zoomScale = 1;
if (convertedImageSize.Width < convertedImageSize.Height)
{
zoomScale = (ScrollView.Frame.Size.Width / convertedImageSize.Width);
}
else
{
zoomScale = (ScrollView.Frame.Size.Height / convertedImageSize.Height);
}
ScrollView.ContentSize = sampleImageSize;
if (zoomScale < 1)
{
ScrollView.MinimumZoomScale = zoomScale;
ScrollView.MaximumZoomScale = 1;
ScrollView.ZoomScale = zoomScale;
}
else
{
ScrollView.MinimumZoomScale = zoomScale;
ScrollView.MaximumZoomScale = zoomScale;
ScrollView.ZoomScale = zoomScale;
}
ScrollView.ContentInset = UIEdgeInsets.Zero;
ScrollView.ContentOffset = new CGPoint((ImageView.Frame.Size.Width - ScrollView.Frame.Size.Width) / 2, (ImageView.Frame.Size.Height - ScrollView.Frame.Size.Height) / 2);
if (cropFrame.Size.Width > 0 && cropFrame.Size.Height > 0)
{
nfloat scale = UIScreen.MainScreen.Scale;
nfloat newZoomScale = (_targetSize.Width * scale) / cropFrame.Size.Width;
ScrollView.ZoomScale = newZoomScale;
nfloat heightAdjustment = (_targetSize.Height / _cropSizeRatio) - ScrollView.ContentSize.Height;
nfloat offsetY = cropFrame.Y + (heightAdjustment * _cropSizeRatio * scale);
ScrollView.ContentOffset = new CGPoint(cropFrame.X / scale / _cropSizeRatio,
(offsetY / scale / _cropSizeRatio) - heightAdjustment);
}
ScrollView.SetNeedsLayout();
UIView.Animate(0.3,
() =>
{
LoadIndicator.Alpha = 0;
ImageView.Alpha = 1;
}, () =>
{
LoadIndicator.StopAnimating();
});
});
});
}