I am using Watin to copy a image to the clipboard, I am getting this error when I do so,
is there a work around to this using AlertDialogHandler?
public System.Drawing.Image GetPicture(WatiN.Core.Image image, ref IE browser)
{
if (image == null || !image.Exists || string.IsNullOrEmpty(image.Src))
return null;
const string t_js =
#"var div = document.images[{0}];
div.contentEditable ='true';
var controlRange;
if(document.body.createControlRange)
{{
controlRange = document.body.createControlRange();
controlRange.addElement(div);
controlRange.execCommand('Copy');
}}
div.contentEditable = 'false';";
var cnt = -1;
foreach (var image1 in browser.Images)
{
cnt++;
if (image1 != null && image1.Exists && !string.IsNullOrEmpty(image1.Src) && image1.Src.ToLower() == image.Src.ToLower())
break;
}
var script = string.Format(t_js, cnt);
WatiN.Core.DialogHandlers.AlertDialogHandler alertDialogHandler = new WatiN.Core.DialogHandlers.AlertDialogHandler ();
using (new WatiN.Core.DialogHandlers.UseDialogOnce(browser.DialogWatcher, alertDialogHandler ))
{
browser.RunScript(script); // Exception comes here !!
alertDialogHandler.WaitUntilExists();
alertDialogHandler.OKButton.Click();
browser.WaitForComplete();
}
var data = Clipboard.GetDataObject();
if (data == null)
return null;
var q = data.GetFormats();
q.ToString();
var q2 = data.GetFormats(true);
q2.ToString();
if (data.GetDataPresent(DataFormats.Bitmap))
{
var img = data.GetData(DataFormats.Bitmap, true);
return img as System.Drawing.Image;
}
if (data.GetDataPresent(DataFormats.Dib))
{
var img = data.GetData(DataFormats.Dib, true);
return img as System.Drawing.Image;
}
if (data.GetDataPresent(DataFormats.EnhancedMetafile))
{
var img = data.GetData(DataFormats.EnhancedMetafile, true);
return img as System.Drawing.Image;
}
if (data.GetDataPresent(DataFormats.MetafilePict))
{
var img = data.GetData(DataFormats.MetafilePict, true);
return img as System.Drawing.Image;
}
if (data.GetDataPresent(DataFormats.Tiff))
{
var img = data.GetData(DataFormats.Tiff, true);
return img as System.Drawing.Image;
}
if (data.GetDataPresent(DataFormats.Serializable))
{
var img = data.GetData(DataFormats.Serializable, true);
return img as System.Drawing.Image;
}
return null;
}
Thanks!
image of the security exception:
I believe it has to do something with IE Security settings
Goto
Security Tab -> Select proper zone (Internet/Local/etc) -> Click on Custome Level button -> Enable (Scripting - > Allow programmatic clipboard access)
Related
asp.net core MVC - framework net6.0
I have a page in which i upload an image and save it to the db.
the file i'm getting from the view is IFormFile.
I want to be able to check the resolution (width and height) of the photo before saving in DB.
Can it be done with IFormFile?
here is the controller that handles the file :
public JsonResult Submit(IFormFile PhotoFile)
{
int success = 0;
string excep = "";
try
{
if (PhotoFile.Length > 0)
{
using (var ms = new MemoryStream())
{
PhotoFile.CopyTo(ms);
var fileBytes = ms.ToArray();
}
}
ApplicationUser appUser =
_unitOfWork.ApplicationUser.GetAll().Where(a => a.UserName == User.Identity.Name).FirstOrDefault();
if (appUser != null)
{
FileUpload fileUpload = new FileUpload()
{
file = PhotoFile,
CompanyId = appUser.CompanyId
};
SaveFile(fileUpload);
}
excep = "success";
success = 1;
return Json(new { excep, success });
}
catch (Exception ex)
{
excep = "fail";
success = 0;
return Json(new { excep, success });
}
}
public string SaveFile(FileUpload fileObj)
{
Company company = _unitOfWork.Company.GetAll().
Where(a => a.Id == fileObj.CompanyId).FirstOrDefault();
if(company != null && fileObj.file.Length > 0)
{
using (var ms = new MemoryStream())
{
fileObj.file.CopyTo(ms);
var fileBytes = ms.ToArray();
company.PhotoAd = fileBytes;
_unitOfWork.Company.Update(company);
_unitOfWork.Save();
return "Saved";
}
}
return "Failed";
}
As far as I know this isn't possible with just IFormFile and you need System.Drawing.Common.
So first you need to convert it like:
using var image = Image.FromStream(PhotoFile.OpenReadStream());
Then you can simply get the height/width with image.height and image.width
It would appear that something has changed in recent versions of iOS as it relates to saving GPS data in photos and subsequent to a bug in the Xam.Plugin.Media library, I am attempting to figure out how to take a photo and save it to the Photo Gallery with intact GPS data using iOS 13.4.1 and Xamarin.iOS 13.16.0.13. I have looked at the internals of Xam.Plugin.Media and using this as a starting point, tried to cobble something together on the hunch that because Xam.Plugin.Media uses ALAssetsLibrary to save to the Photo Gallery, perhaps this was why the GPS data is not being saved with the photo.
I am currently at the point where I had thought I would be able to take the photo, merge GPS data into the file and save the JPG output to a temporary location in the app folder (i.e. I haven't even gotten to saving the photo to the gallery yet). But when I examine this temp file using either the Preview app on MacOS or Photoshop to view the GPS metadata, the data is not there.
My handler for UIImagePickerController.FinishedPickingMedia is this:
private void OnFinishedPickingMedia(object sender, UIImagePickerMediaPickedEventArgs e)
{
try
{
NSDictionary info = e.Info;
NSDictionary meta = null;
UIImage image = null;
string savedImagePath = null;
if (_imagePicker.SourceType == UIImagePickerControllerSourceType.Camera)
{
meta = (NSDictionary)info[UIImagePickerController.MediaMetadata];
image = (UIImage)info[UIImagePickerController.OriginalImage];
if (meta != null && meta.ContainsKey(ImageIO.CGImageProperties.Orientation))
{
var newMeta = new NSMutableDictionary();
newMeta.SetValuesForKeysWithDictionary(meta);
var newTiffDict = new NSMutableDictionary();
newTiffDict.SetValuesForKeysWithDictionary(meta[ImageIO.CGImageProperties.TIFFDictionary] as NSDictionary);
newTiffDict.SetValueForKey(meta[ImageIO.CGImageProperties.Orientation], ImageIO.CGImageProperties.TIFFOrientation);
newMeta[ImageIO.CGImageProperties.TIFFDictionary] = newTiffDict;
meta = newMeta;
}
if (_locationPermissionGranted)
{
meta = SetGpsLocation(meta);
}
savedImagePath = SaveImageWithMetadata(image, meta);
}
string aPath = null;
if (_imagePicker.SourceType != UIImagePickerControllerSourceType.Camera)
{
// Try to get the album path's URL.
var url = (NSUrl)info[UIImagePickerController.ReferenceUrl];
aPath = url?.AbsoluteString;
}
}
catch (Exception ex)
{
Console.WriteLine($"Unable to get metadata: {ex}");
}
}
Which calls:
private NSDictionary SetGpsLocation(NSDictionary meta)
{
var newMeta = new NSMutableDictionary();
newMeta.SetValuesForKeysWithDictionary(meta);
var newGpsDict = new NSMutableDictionary();
newGpsDict.SetValueForKey(new NSNumber(Math.Abs(_lat)), ImageIO.CGImageProperties.GPSLatitude);
newGpsDict.SetValueForKey(new NSString(_lat > 0 ? "N" : "S"), ImageIO.CGImageProperties.GPSLatitudeRef);
newGpsDict.SetValueForKey(new NSNumber(Math.Abs(_long)), ImageIO.CGImageProperties.GPSLongitude);
newGpsDict.SetValueForKey(new NSString(_long > 0 ? "E" : "W"), ImageIO.CGImageProperties.GPSLongitudeRef);
newGpsDict.SetValueForKey(new NSNumber(_altitude), ImageIO.CGImageProperties.GPSAltitude);
newGpsDict.SetValueForKey(new NSNumber(0), ImageIO.CGImageProperties.GPSAltitudeRef);
newGpsDict.SetValueForKey(new NSNumber(_speed), ImageIO.CGImageProperties.GPSSpeed);
newGpsDict.SetValueForKey(new NSString("K"), ImageIO.CGImageProperties.GPSSpeedRef);
newGpsDict.SetValueForKey(new NSNumber(_direction), ImageIO.CGImageProperties.GPSImgDirection);
newGpsDict.SetValueForKey(new NSString("T"), ImageIO.CGImageProperties.GPSImgDirectionRef);
newGpsDict.SetValueForKey(new NSString(_timestamp.ToString("hh:mm:ss")), ImageIO.CGImageProperties.GPSTimeStamp);
newGpsDict.SetValueForKey(new NSString(_timestamp.ToString("yyyy:MM:dd")), ImageIO.CGImageProperties.GPSDateStamp);
newMeta[ImageIO.CGImageProperties.GPSDictionary] = newGpsDict;
return newMeta;
}
private string SaveImageWithMetadata(UIImage image, NSDictionary meta)
{
string outputPath = null;
try
{
var finalQuality = 1.0f;
var imageData = image.AsJPEG(finalQuality);
// 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))
{
destinationOptions.TiffDictionary =
new CGImagePropertiesTiff(meta[ImageIO.CGImageProperties.TIFFDictionary] as NSDictionary);
}
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)
{
outputPath = GetOutputPath();
imageWithExif.Save(outputPath, true);
}
}
catch (Exception e)
{
Console.WriteLine($"Unable to save image with metadata: {e}");
}
return outputPath;
}
private static string GetOutputPath()
{
var path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), "temp");
Directory.CreateDirectory(path);
var timestamp = DateTime.UtcNow.ToString("yyyMMdd_HHmmss", CultureInfo.InvariantCulture);
var name = "IMG_" + timestamp + ".jpg";
return Path.Combine(path, GetUniquePath(path, name));
}
private static string GetUniquePath(string path, string name)
{
var ext = Path.GetExtension(name);
name = Path.GetFileNameWithoutExtension(name);
var fullName = name + ext;
var i = 1;
while (File.Exists(Path.Combine(path, fullName)))
{
fullName = name + "_" + (i++) + ext;
}
return Path.Combine(path, fullName);
}
The file is saved successfully, but without the expected GPS metadata. Which leads me to believe that the problem may be to do with the way I am saving the temporary photo or saving the GPS metadata to it in either SaveImageWithMetadata or SetGpsLocation.
If anyone can provide some info on what actually works now with iOS 13.4.1 and saving GPS data to photos, I would be very appreciative.
Hi have a Xamarin Android project using C#. Currently I am using await CrossMedia.Current.PickPhotoAsync() method to upload image. However, it did not provide a tickbox beside the images for me to select multiple. How can I manage to select multiple images and upload together?
You could implement it by yourself.
1.Add these methods to your MainActivity.cs file
public static int OPENGALLERYCODE = 100;
protected override void OnActivityResult(int requestCode, Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
//If we are calling multiple image selection, enter into here and return photos and their filepaths.
if (requestCode == OPENGALLERYCODE && resultCode == Result.Ok)
{
List<string> images = new List<string>();
if (data != null)
{
//Separate all photos and get the path from them all individually.
ClipData clipData = data.ClipData;
if (clipData != null)
{
for (int i = 0; i < clipData.ItemCount; i++)
{
ClipData.Item item = clipData.GetItemAt(i);
Android.Net.Uri uri = item.Uri;
var path = GetRealPathFromURI(uri);
if (path != null)
{
images.Add(path);
}
}
}
else
{
Android.Net.Uri uri = data.Data;
var path = GetRealPathFromURI(uri);
if (path != null)
{
images.Add(path);
}
}
}
}
}
/// <summary>
/// Get the real path for the current image passed.
/// </summary>
public String GetRealPathFromURI(Android.Net.Uri contentURI)
{
try
{
ICursor imageCursor = null;
string fullPathToImage = "";
imageCursor = ContentResolver.Query(contentURI, null, null, null, null);
imageCursor.MoveToFirst();
int idx = imageCursor.GetColumnIndex(MediaStore.Images.ImageColumns.Data);
if (idx != -1)
{
fullPathToImage = imageCursor.GetString(idx);
}
else
{
ICursor cursor = null;
var docID = DocumentsContract.GetDocumentId(contentURI);
var id = docID.Split(':')[1];
var whereSelect = MediaStore.Images.ImageColumns.Id + "=?";
var projections = new string[] { MediaStore.Images.ImageColumns.Data };
cursor = ContentResolver.Query(MediaStore.Images.Media.InternalContentUri, projections, whereSelect, new string[] { id }, null);
if (cursor.Count == 0)
{
cursor = ContentResolver.Query(MediaStore.Images.Media.ExternalContentUri, projections, whereSelect, new string[] { id }, null);
}
var colData = cursor.GetColumnIndexOrThrow(MediaStore.Images.ImageColumns.Data);
cursor.MoveToFirst();
fullPathToImage = cursor.GetString(colData);
}
return fullPathToImage;
}
catch (Exception ex)
{
Toast.MakeText(Xamarin.Forms.Forms.Context, "Unable to get path", ToastLength.Long).Show();
}
return null;
}
2.invoked the following in the specific Activity which you want to open the picker
public void OpenGallery()
{
try
{
var imageIntent = new Intent(Intent.ActionPick);
imageIntent.SetType("image/*");
imageIntent.PutExtra(Intent.ExtraAllowMultiple, true);
imageIntent.SetAction(Intent.ActionGetContent);
this.StartActivityForResult(Intent.CreateChooser(imageIntent, "Select photo"), OPENGALLERYCODE);
Toast.MakeText(this, "Tap and hold to select multiple photos.", ToastLength.Short).Show();
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
Toast.MakeText(this, "Error. Can not continue, try again.", ToastLength.Long).Show();
}
}
void ClearFileDirectory()
{
var directory = new Java.IO.File(Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryPictures), ImageHelpers.collectionName).Path.ToString();
if (Directory.Exists(directory))
{
var list = Directory.GetFiles(directory, "*");
if (list.Length > 0)
{
for (int i = 0; i < list.Length; i++)
{
File.Delete(list[i]);
}
}
}
}
//collectionName is the name of the folder in your Android Pictures directory.
public static readonly string collectionName = "TmpPictures";
public string SaveFile(byte[] imageByte, string fileName)
{
var fileDir = new Java.IO.File(Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryPictures), collectionName);
if (!fileDir.Exists())
{
fileDir.Mkdirs();
}
var file = new Java.IO.File(fileDir, fileName);
System.IO.File.WriteAllBytes(file.Path, imageByte);
return file.Path;
}
public string CompressImage(string path)
{
byte[] imageBytes;
//Get the bitmap.
var originalImage = BitmapFactory.DecodeFile(path);
//Set imageSize and imageCompression parameters.
var imageSize = .86;
var imageCompression = 67;
//Resize it and then compress it to Jpeg.
var width = (originalImage.Width * imageSize);
var height = (originalImage.Height * imageSize);
var scaledImage = Bitmap.CreateScaledBitmap(originalImage, (int)width, (int)height, true);
using (MemoryStream ms = new MemoryStream())
{
scaledImage.Compress(Bitmap.CompressFormat.Jpeg, imageCompression, ms);
imageBytes = ms.ToArray();
}
originalImage.Recycle();
originalImage.Dispose();
GC.Collect();
return SaveFile(imageBytes, Guid.NewGuid().ToString());
}
I want scan many images toghether in c# code, I use twain 3.0.0.
I want to change transfer mode in twain to save my images directly and don't collect these in RAM.
btnstart:
TwainSession _twain;
if (_twain.State == 4)
{
_stopScan = false;
if (_twain.CurrentSource.Capabilities.CapUIControllable.IsSupported)
{
// hide scanner ui if possible
if (_twain.CurrentSource.Enable(SourceEnableMode.NoUI, false, this.Handle) == ReturnCode.Success)
{
btnStopScan.Enabled = true;
btnStartCapture.Enabled = false;
}
}
}
data transfer:
_twain.DataTransferred += (s, e) =>
{
PlatformInfo.Current.Log.Info("Transferred data event on thread " + Thread.CurrentThread.ManagedThreadId);
// example on getting ext image info
var infos = e.GetExtImageInfo(NTwain.Data.ExtendedImageInfo.Camera).Where(it => it.ReturnCode == ReturnCode.Success);
foreach (var it in infos)
{
var values = it.ReadValues();
PlatformInfo.Current.Log.Info(string.Format("{0} = {1}", it.InfoID, values.FirstOrDefault()));
break;
}
Image img = null;
if (e.NativeData != IntPtr.Zero)
{
var stream = e.GetNativeImageStream();
if (stream != null)
{
img = Image.FromStream(stream);
}
}
else if (!string.IsNullOrEmpty(e.FileDataPath))
{
img = new Bitmap(e.FileDataPath);
}
}
I want to get the path of the image from where it is being uploaded...
Ex:my image is in E:drive and in images folder and i want to get that path before i upload the image
My Controllercode is below
public ActionResult UploadImage(UploadImageModel model)
{
if (ModelState.IsValid)
{
Bitmap original = null;
var name = "newimagefile";
var errorField = string.Empty;
if (model.IsUrl)
{
errorField = "Url";
name = GetUrlFileName(model.Url);
original = GetImageFromUrl(model.Url);
}
else if (model.IsFlickr)
{
errorField = "Flickr";
name = GetUrlFileName(model.Flickr);
original = GetImageFromUrl(model.Flickr);
}
else if (model.File != null)
{
errorField = "File";
name = Path.GetFileNameWithoutExtension(model.File.FileName);
original = Bitmap.FromStream(model.File.InputStream) as Bitmap;
}
if (original != null)
{
var img = CreateImage(original, model.X, model.Y, model.Width, model.Height);
var fn = Server.MapPath("~/Content/img/" + name + ".png");
img.Save(fn, System.Drawing.Imaging.ImageFormat.Png);
return RedirectToAction("Index");
}
else
ModelState.AddModelError(errorField, "Your upload did not seem valid. Please try again using only correct images!");
}
return View(model);
}
it is not possible . it is a security threat if the browser sends the full path from client side.