private async void OnGetImage(object sender, EventArgs e)
{
var settings = new ImageConstructionSettings
{
Padding = 12,
StrokeColor = Color.FromRgb(25, 25, 25),
BackgroundColor = Color.FromRgb(225, 225, 225),
DesiredSizeOrScale = 2f
};
var image = await padView.GetImageStreamAsync(SignatureImageFormat.Png, settings);
if (image == null)
{
await DisplayAlert("Error", "A signature is required to check assets out.", "OK");
return;
}
var base64_ = AppImages.StreamToBase64String(image);
IEnumerable <PropertyPassItemDbTable> PropertyPass = PropertyPassClass.PropertyPassItem.ConvertListToDb(_PropertyPassTableID, _PropertyPassDisplayList);
Database.PropertyPassItem.InsertAll(_connection, PropertyPass);
var sigupdate = Database.PropertyPassTable.UpdateSignature(_connection, base64_, _PropertyPassTableID.PropertyPassID_Internal);
if (sigupdate == "")
{
await DisplayAlert("Complete!", "The asset(s) have been checked out.", "OK");
}
else
{
await DisplayAlert("Error", sigupdate, "OK");
}
await Navigation.PopToRootAsync();
}
private async void Save()
{
var settings = new ImageConstructionSettings
{
StrokeColor = Xamarin.Forms.Color.Black,
BackgroundColor = Xamarin.Forms.Color.White,
StrokeWidth = 1f
};
try
{
using (var bitmap = await GetImageStreamAsync(SignatureImageFormat.Png, settings))
{
//var s = Convert.ToBase64String(ReadFully(bitmap));
if (bitmap == null)
{
var a = "";
}
else
{
var temp = ImageHelper.ReadFully(bitmap);
var uiimage = ImageHelper.ToImage(temp);
uiimage = ImageHelper.MaxResizeImage(uiimage, 200, 100);
temp = ImageHelper.ToArray(uiimage);
DefektacijasAkts.Paraksts = Convert.ToBase64String(temp);
RaisePropertyChanged(nameof(Paraksts));
}
}
App.Database.InsertDefektacijasAkts(DefektacijasAkts);
}
catch (Exception ex)
{
}
}
private async void OnGetImage(object sender, EventArgs e)
{
var settings = new ImageConstructionSettings
{
Padding = 12,
StrokeColor = Color.FromRgb(25, 25, 25),
BackgroundColor = Color.FromRgb(225, 225, 225),
DesiredSizeOrScale = 2f
};
var image = await SignatureView.GetImageStreamAsync(SignatureImageFormat.Png, settings);
if (image != null)
{
/*
* DataSource.SignatureImage = new Image
* {
* Aspect = Aspect.AspectFit,
* Source = ImageSource.FromStream(() => image)
* };
*/
DataSource.SignatureStream = image;
}
await Navigation.PopModalAsync();
}
private async void OnGetImage(object sender, EventArgs e)
{
var settings = new ImageConstructionSettings
{
Padding = 12,
StrokeColor = Color.FromRgb(25, 25, 25),
BackgroundColor = Color.FromRgb(225, 225, 225),
DesiredSizeOrScale = 2f
};
var image = await padView.GetImageStreamAsync(SignatureImageFormat.Png, settings);
if (image == null)
{
return;
}
var page = new ContentPage
{
Title = "Signature",
Content = new Image
{
Aspect = Aspect.AspectFit,
Source = ImageSource.FromStream(() => image)
}
};
await Navigation.PushAsync(page);
}
private async Task OnGetImage()
{
var settings = new ImageConstructionSettings
{
Padding = 12,
StrokeColor = Color.FromRgb(25, 25, 25),
BackgroundColor = Color.FromRgb(225, 225, 225),
DesiredSizeOrScale = 2f
};
var image = await padView.GetImageStreamAsync(SignatureImageFormat.Png, settings);
if (image == null)
{
return;
}
IFolder rootFolder = FileSystem.Current.LocalStorage;
IFolder folder = await rootFolder.CreateFolderAsync("MySubFolder",
CreationCollisionOption.OpenIfExists);
IFile file = await folder.CreateFileAsync("answer.png",
CreationCollisionOption.ReplaceExisting);
using (var fooStream = await file.OpenAsync(FileAccess.ReadAndWrite))
{
await image.CopyToAsync(fooStream);
}
//var page = new ContentPage
//{
// Title = "Signature",
// Content = new Image
// {
// Aspect = Aspect.AspectFit,
// Source = ImageSource.FromStream(() => image)
// }
//};
//await Navigation.PushAsync(page);
}
private async void OnShowImage(object sender, EventArgs e)
{
// get the file name
var folder = FileSystem.Current.LocalStorage;
var file = await folder.CreateFileAsync($"signature.jpg", CreationCollisionOption.GenerateUniqueName);
// create some settings to control the output
var settings = new ImageConstructionSettings
{
BackgroundColor = Color.White,
StrokeColor = Color.Black,
};
// write the signature stream to the file stream
using (var stream = await signaturePad.GetImageStreamAsync(SignatureImageFormat.Jpeg, settings))
using (var fileStream = await file.OpenAsync(FileAccess.ReadAndWrite))
{
// copy the bytes
await stream.CopyToAsync(fileStream);
}
// success
await DisplayAlert("Signature Saved", "Signature file saved successfully.\nLoading preview...", "OK");
// show the image preview
var previewPage = new ContentPage
{
Title = "View Signature",
Content = new Image
{
Source = ImageSource.FromFile(file.Path),
Margin = new Thickness(20)
}
};
await Navigation.PushAsync(previewPage);
}
//Method for when the signature is completed
private async void OnSendClicked(object sender, EventArgs e)
{
//Accessing file system and creating file
var folder = FileSystem.Current.LocalStorage;
//Creating file without limitng the number of files locally
//var file = await folder.CreateFileAsync($"signature.png",
//CreationCollisionOption.GenerateUniqueName);
//Better implementation. Only one sign file locally being replaced
//Whats the file name prefix suffix?
var file = await folder.CreateFileAsync("signature.png",
CreationCollisionOption.ReplaceExisting);
//Creating the image of signature
var settings = new ImageConstructionSettings
{
BackgroundColor = Color.White,
StrokeColor = Color.Black,
};
try
{
using (var stream = await signaturePad.GetImageStreamAsync(SignatureImageFormat.Png,
settings))
using (var fileStream = await file.OpenAsync(FileAccess.ReadAndWrite))
{
//Trying to stop the file from being created as blank (Needs work)
if (!stream.Equals(null))
{
await stream.CopyToAsync(fileStream);
}
}
//Display Thank you for signing. (Optional)
await DisplayAlert("Thank you",
"Thanks for signing, " +
"Your signature has been received.",
"OK");
System.Diagnostics.Debug.WriteLine($"File Path: {file.Path}");
//Clear the signature from pad after the file is saved.
signaturePad.Clear();
await Navigation.PopAsync();
//Push to S3
//AWS VS Toolkit. Needs research.
//AWS Credentials - Account Number, Secret Key and one more
//Bucket(s) name(s)
//File Name to be stored in
//Where in DB is it updated ?
//Delete local device file to save storage on device
//Is this optional ?
}
catch (NullReferenceException)
{
//Log Error here
System.Diagnostics.Debug.WriteLine("Null Reference Exception caught");
await DisplayAlert("Error", "Please sign.", "OK");
}
catch (Exception)
{
//Log error
await DisplayAlert("Oops!", $"Something went wrong. Please make " +
"sure to sign.", "OK");
}
}
//Method for when the signature is completed
private async void OnSendClicked(object sender, EventArgs e)
{
activitySpinner.IsVisible = true;
//Accessing file system and creating file
var folder = FileSystem.Current.LocalStorage;
var file = await folder.CreateFileAsync($"{req.RequestId}",
CreationCollisionOption.ReplaceExisting);
//Creating the image of signature
var settings = new ImageConstructionSettings
{
BackgroundColor = Color.White,
StrokeColor = Color.Black,
};
try
{
using (var stream = await signaturePad.GetImageStreamAsync(SignatureImageFormat.Png,
settings))
using (var fileStream = await file.OpenAsync(FileAccess.ReadAndWrite))
{
//Trying to stop the file from being created as blank (Needs work)
if (!stream.Equals(null))
{
await stream.CopyToAsync(fileStream);
}
}
activitySpinner.IsVisible = false;
//Push to S3
if (_awsServ.SaveFileToS3(file))
{
//Display Thank you for signing. (Optional)
await DisplayAlert("Thank you",
"Thanks for signing, " +
"Your signature has been received.",
"OK");
//Clear the signature from pad after the file is saved.
signaturePad.Clear();
//Popping back to the mainpage
await Navigation.PopToRootAsync();
}
else
{
await DisplayAlert("Upload Failed",
"Your signature has not been received. Send Again.",
"OK");
}
}
catch (NullReferenceException)
{
activitySpinner.IsVisible = false;
//Log Error here
System.Diagnostics.Debug.WriteLine("Null Reference Exception caught");
await DisplayAlert("Error", "Please sign.", "OK");
}
catch (Exception)
{
activitySpinner.IsVisible = false;
//Log error
await DisplayAlert("Oops!",
"Something went wrong. Please make sure to sign.",
"OK");
}
activitySpinner.IsVisible = false;
}
