private async void SaveCanvas(SKSurface surface)
{
try
{
var data = surface.Snapshot().Encode(SKEncodedImageFormat.Png, 100);
var skBitmap = SKBitmap.Decode(data.AsStream(true));
DateTime dt = DateTime.Now;
string filename = String.Format("Collage-{0:D4}{1:D2}{2:D2}-{3:D2}{4:D2}.png", dt.Year, dt.Month, dt.Day, dt.Hour, dt.Minute);
var scaled = skBitmap.Resize(new SKImageInfo(_width * 2, _height * 2),
SKBitmapResizeMethod.Lanczos3);
SKImage image = SKImage.FromBitmap(scaled);
SKData png = image.Encode(SKEncodedImageFormat.Png, 100);
IImageStorageService dependencyService = DependencyService.Get <IImageStorageService>();
//Save the bitmap and get a boolean indicating success.
bool result = await dependencyService.SaveBitmap(png.ToArray(), filename);
if (result)
{
_files = null;
canvasViews.InvalidateSurface();
}
else
{
await DisplayAlert("bad", "error occured", "cancel");
}
ButtonSave.IsEnabled = true;
_isSaving = false;
}
catch (Exception ex)
{
await DisplayAlert("Error", ex.Message, "Ok");
_isSaving = false;
}
}