async Task OnPageFinished(Android.Webkit.WebView view, string fileName, TaskCompletionSource <ToFileResult> taskCompletionSource)
{
var widthString = await view.EvaluateJavaScriptAsync("document.documentElement.offsetWidth");
var width = double.Parse(widthString.ToString());
var heightString = await view.EvaluateJavaScriptAsync("document.documentElement.offsetHeight");
var height = double.Parse(heightString.ToString());
int specWidth = MeasureSpecFactory.MakeMeasureSpec((int)(width * Display.Scale), MeasureSpecMode.Exactly);
int specHeight = MeasureSpecFactory.MakeMeasureSpec((int)(height * Display.Scale), MeasureSpecMode.Exactly);
view.Measure(specWidth, specHeight);
view.Layout(0, 0, view.MeasuredWidth, view.MeasuredHeight);
await Task.Delay(50);
using (var _dir = Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDocuments))
{
if (!_dir.Exists())
{
_dir.Mkdir();
}
var path = _dir.Path + "/" + fileName + ".png";
using (var file = new Java.IO.File(path))
{
if (!file.Exists())
{
file.CreateNewFile();
}
using (var stream = new FileStream(file.Path, FileMode.Create, System.IO.FileAccess.Write))
{
if (Android.OS.Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.Honeycomb)
{
await Task.Delay(1000);
using (var bitmap = Bitmap.CreateBitmap(System.Math.Max(view.MeasuredWidth, view.ContentWidth()), view.MeasuredHeight, Bitmap.Config.Argb8888))
{
using (var canvas = new Canvas(bitmap))
{
if (view.Background != null)
{
view.Background.Draw(canvas);
}
else
{
canvas.DrawColor(Android.Graphics.Color.White);
}
view.SetClipChildren(false);
view.SetClipToPadding(false);
view.SetClipToOutline(false);
await Task.Delay(50);
view.Draw(canvas);
await Task.Delay(50);
bitmap.Compress(Bitmap.CompressFormat.Png, 80, stream);
}
}
}
else
{
await Task.Delay(1000);
#pragma warning disable CS0618 // Type or member is obsolete
using (var bitmap = Bitmap.CreateBitmap(view.DrawingCache))
#pragma warning restore CS0618 // Type or member is obsolete
{
bitmap.Compress(Bitmap.CompressFormat.Png, 80, stream);
}
}
stream.Flush();
stream.Close();
taskCompletionSource.SetResult(new ToFileResult(false, path));
view.Dispose();
}
}
}
}
