private void FreeBitmap()
{
dataProvider?.Dispose();
dataProvider = null;
bitmapData?.Dispose();
bitmapData = null;
}
public void SaveTo(Stream stream, CompressionFormat compression)
{
var data = new NSMutableData();
CGImageDestination dest = null;
switch (compression)
{
case CompressionFormat.Jpeg:
dest = CGImageDestination.Create(data, MobileCoreServices.UTType.JPEG, imageCount: 1);
break;
case CompressionFormat.Png:
dest = CGImageDestination.Create(data, MobileCoreServices.UTType.PNG, imageCount: 1);
break;
}
if (dest != null)
{
dest.AddImage(cgImage);
dest.Close();
using (var bitmapStream = data.AsStream()) {
bitmapStream.CopyTo(stream);
}
data.Dispose();
}
}
public void RedrawDailyStockPDF(bool DocumentSigned)
{
// render created preview in PDF context
NSMutableData pdfData = new NSMutableData();
UIGraphics.BeginPDFContext(pdfData, GeneratedPDFView.Bounds, null);
UIGraphics.BeginPDFPage();
GeneratedPDFView.Layer.RenderInContext(UIGraphics.GetCurrentContext());
UIGraphics.EndPDFContent();
// save the rendered context to disk
NSError err;
string pdfID = String.Format("{0}_{1}_{2}_UsedStock", MyConstants.EmployeeID, MyConstants.EmployeeName, DateTime.Now.Date.ToString("yyyy-MM-dd"));
string pdfFileName;
if (DocumentSigned)
{
pdfFileName = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), pdfID + "_Signed.pdf");
}
else
{
pdfFileName = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), pdfID + "_Not_Signed.pdf");
}
pdfData.Save(pdfFileName, true, out err);
if (err != null)
{
err.Dispose(); err = null;
}
if (pdfData != null)
{
pdfData.Dispose(); pdfData = null;
}
// set up UIWebView in signature view controller
this.PDFView.MultipleTouchEnabled = true;
this.PDFView.ScalesPageToFit = true;
this.PdfFileName = pdfFileName;
if (DocumentSigned)
{
PDFView.LoadRequest(new NSUrlRequest(NSUrl.FromFilename(PdfFileName)));
}
}
internal static bool SaveImageWithMetadata(UIImage image, float quality, NSDictionary meta, string path, string pathExtension)
{
if (UIDevice.CurrentDevice.CheckSystemVersion(13, 0))
{
return(SaveImageWithMetadataiOS13(image, quality, meta, path, pathExtension));
}
try
{
pathExtension = pathExtension.ToLowerInvariant();
var finalQuality = quality;
var imageData = pathExtension == "jpg" ? image.AsJPEG(finalQuality) : image.AsPNG();
//continue to move down quality , rare instances
while (imageData == null && finalQuality > 0)
{
finalQuality -= 0.05f;
imageData = image.AsJPEG(finalQuality);
}
if (imageData == null)
{
throw new NullReferenceException("Unable to convert image to jpeg, please ensure file exists or lower quality level");
}
var dataProvider = new CGDataProvider(imageData);
var cgImageFromJpeg = CGImage.FromJPEG(dataProvider, null, false, CGColorRenderingIntent.Default);
var imageWithExif = new NSMutableData();
var destination = CGImageDestination.Create(imageWithExif, UTType.JPEG, 1);
var cgImageMetadata = new CGMutableImageMetadata();
var destinationOptions = new CGImageDestinationOptions();
if (meta.ContainsKey(ImageIO.CGImageProperties.Orientation))
{
destinationOptions.Dictionary[ImageIO.CGImageProperties.Orientation] = meta[ImageIO.CGImageProperties.Orientation];
}
if (meta.ContainsKey(ImageIO.CGImageProperties.DPIWidth))
{
destinationOptions.Dictionary[ImageIO.CGImageProperties.DPIWidth] = meta[ImageIO.CGImageProperties.DPIWidth];
}
if (meta.ContainsKey(ImageIO.CGImageProperties.DPIHeight))
{
destinationOptions.Dictionary[ImageIO.CGImageProperties.DPIHeight] = meta[ImageIO.CGImageProperties.DPIHeight];
}
if (meta.ContainsKey(ImageIO.CGImageProperties.ExifDictionary))
{
destinationOptions.ExifDictionary =
new CGImagePropertiesExif(meta[ImageIO.CGImageProperties.ExifDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.TIFFDictionary))
{
var existingTiffDict = meta[ImageIO.CGImageProperties.TIFFDictionary] as NSDictionary;
if (existingTiffDict != null)
{
var newTiffDict = new NSMutableDictionary();
newTiffDict.SetValuesForKeysWithDictionary(existingTiffDict);
newTiffDict.SetValueForKey(meta[ImageIO.CGImageProperties.Orientation], ImageIO.CGImageProperties.TIFFOrientation);
destinationOptions.TiffDictionary = new CGImagePropertiesTiff(newTiffDict);
}
}
if (meta.ContainsKey(ImageIO.CGImageProperties.GPSDictionary))
{
destinationOptions.GpsDictionary =
new CGImagePropertiesGps(meta[ImageIO.CGImageProperties.GPSDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.JFIFDictionary))
{
destinationOptions.JfifDictionary =
new CGImagePropertiesJfif(meta[ImageIO.CGImageProperties.JFIFDictionary] as NSDictionary);
}
if (meta.ContainsKey(ImageIO.CGImageProperties.IPTCDictionary))
{
destinationOptions.IptcDictionary =
new CGImagePropertiesIptc(meta[ImageIO.CGImageProperties.IPTCDictionary] as NSDictionary);
}
destination.AddImageAndMetadata(cgImageFromJpeg, cgImageMetadata, destinationOptions);
var success = destination.Close();
if (success)
{
var saved = imageWithExif.Save(path, true, out NSError error);
if (error != null)
{
Debug.WriteLine($"Unable to save exif data: {error.ToString()}");
}
imageWithExif.Dispose();
imageWithExif = null;
}
return(success);
}
catch (Exception ex)
{
Console.WriteLine($"Unable to save image with metadata: {ex}");
}
return(false);
}
public override void FinishedLoading(NSUrlConnection connection)
{
_imageSetter(imageData);
imageData.Dispose();
imageData = null;
}