private async void NavigationCompleteB(Windows.UI.Xaml.Controls.WebView webView, WebViewNavigationCompletedEventArgs args)
{
IsMainPageChild(webView);
using (InMemoryRandomAccessStream ms = new InMemoryRandomAccessStream())
{
System.Diagnostics.Debug.WriteLine("B webView.Size=[" + webView.Width + "," + webView.Height + "] IsOnMainThread=[" + P42.Utils.Environment.IsOnMainThread + "]");
try
{
//await Task.Delay(2000);
await webView.CapturePreviewToStreamAsync(ms);
var decoder = await BitmapDecoder.CreateAsync(ms);
var transform = new BitmapTransform
{
ScaledHeight = (uint)decoder.PixelHeight,
ScaledWidth = (uint)decoder.PixelWidth
};
var pixelData = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Straight,
transform,
ExifOrientationMode.RespectExifOrientation,
ColorManagementMode.DoNotColorManage);
var bytes = pixelData.DetachPixelData();
var piclib = Windows.Storage.ApplicationData.Current.TemporaryFolder;
var fileName = (string)webView.GetValue(PngFileNameProperty) + ".png";
var file = await piclib.CreateFileAsync(fileName, Windows.Storage.CreationCollisionOption.GenerateUniqueName);
using (var stream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, stream);
encoder.SetPixelData(BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Ignore,
(uint)decoder.PixelWidth, (uint)decoder.PixelHeight,
0, 0, bytes);
await encoder.FlushAsync();
}
var onComplete = (TaskCompletionSource <ToFileResult>)webView.GetValue(TaskCompletionSourceProperty);
System.Diagnostics.Debug.WriteLine(GetType() + "." + P42.Utils.ReflectionExtensions.CallerMemberName() + ": Complete[" + file.Path + "]");
onComplete?.SetResult(new ToFileResult(false, file.Path));
}
catch (Exception e)
{
var onComplete = (TaskCompletionSource <ToFileResult>)webView.GetValue(TaskCompletionSourceProperty);
onComplete?.SetResult(new ToFileResult(true, e.InnerException?.Message ?? e.Message));
}
}
}
private async void NavigationCompleteA(Windows.UI.Xaml.Controls.WebView webView, WebViewNavigationCompletedEventArgs args)
{
//IsMainPageChild(webView);
webView.NavigationCompleted -= NavigationCompleteA;
var contentSize = await webView.WebViewContentSizeAsync();
System.Diagnostics.Debug.WriteLine("A contentSize=[" + contentSize + "]");
System.Diagnostics.Debug.WriteLine("A webView.Size=[" + webView.Width + "," + webView.Height + "] IsOnMainThread=[" + P42.Utils.Environment.IsOnMainThread + "]");
//webView.Width = contentSize.Width;
var width = (int)webView.GetValue(PngWidthProperty);
webView.Width = width;
webView.Height = contentSize.Height;
//webView.UpdateLayout();
webView.NavigationCompleted += NavigationCompleteB;
//if (webView.GetValue(HtmlStringProperty) is string html)
// webView.NavigateToString(html);
//else
//NavigationCompleteB(webView, args);
webView.Refresh();
}
public static string GetHtmlSource(WebView view)
{
if (null == view)
{
throw new ArgumentNullException("view");
}
return (string)view.GetValue(HtmlSourceProperty);
}
private async void NavigationCompleteB(Windows.UI.Xaml.Controls.WebView webView, WebViewNavigationCompletedEventArgs args)
{
System.Diagnostics.Debug.WriteLine("B webView.Size=[" + webView.Width + "," + webView.Height + "]");
using (InMemoryRandomAccessStream ms = new InMemoryRandomAccessStream())
{
await webView.CapturePreviewToStreamAsync(ms);
var decoder = await BitmapDecoder.CreateAsync(ms);
var transform = new BitmapTransform
{
ScaledHeight = (uint)decoder.PixelHeight,
ScaledWidth = (uint)decoder.PixelWidth
};
var pixelData = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Straight,
transform,
ExifOrientationMode.RespectExifOrientation,
ColorManagementMode.DoNotColorManage);
var bytes = pixelData.DetachPixelData();
var piclib = Windows.Storage.ApplicationData.Current.TemporaryFolder;
var fileName = (string)webView.GetValue(PngFileNameProperty) + ".png";
var file = await piclib.CreateFileAsync(fileName, Windows.Storage.CreationCollisionOption.GenerateUniqueName);
using (var stream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, stream);
encoder.SetPixelData(BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Ignore,
(uint)decoder.PixelWidth, (uint)decoder.PixelHeight,
0, 0, bytes);
await encoder.FlushAsync();
}
var onComplete = (Action <string>)webView.GetValue(OnCompleteProperty);
onComplete?.Invoke(file.Path);
}
}
private void NavigationCompleteC(Windows.UI.Xaml.Controls.WebView webView, WebViewNavigationCompletedEventArgs args)
{
webView.NavigationCompleted -= NavigationCompleteC;
if (webView.GetValue(TaskCompletionSourceProperty) is TaskCompletionSource <ToFileResult> onComplete)
{
if (webView.GetValue(ToFileResultProperty) is ToFileResult result)
{
System.Diagnostics.Debug.WriteLine(GetType() + "." + P42.Utils.ReflectionExtensions.CallerMemberName() + ": Complete[" + result.Result + "]");
onComplete.SetResult(result);
}
else
{
onComplete.SetResult(new ToFileResult(true, "unknown error generating PNG."));
}
}
else
{
throw new Exception("Failed to get TaskCompletionSource for UWP WebView.ToPngAsync");
}
}
private async void NavigationCompleteA(Windows.UI.Xaml.Controls.WebView webView, WebViewNavigationCompletedEventArgs args)
{
var contentSize = await webView.WebViewContentSizeAsync();
webView.NavigationCompleted -= NavigationCompleteA;
System.Diagnostics.Debug.WriteLine("A contentSize=[" + contentSize + "]");
System.Diagnostics.Debug.WriteLine("A webView.Size=[" + webView.Width + "," + webView.Height + "]");
webView.Width = contentSize.Width;
webView.Height = contentSize.Height;
webView.UpdateLayout();
webView.NavigationCompleted += NavigationCompleteB;
var html = (string)webView.GetValue(HtmlStringProperty);
webView.NavigateToString(html);
}
public static string GetHtmlContent(WebView attached)
{
return (string)attached.GetValue(HtmlContentProperty);
}
/// <summary>
/// Gets source string
/// </summary>
/// <param name="obj">Webview</param>
/// <returns>Source string</returns>
public static string GetSourceString(_WebView obj)
{
return((string)obj.GetValue(SourceStringProperty));
}
public static string GetUriSource(WebView view)
{
return (string)view.GetValue(UriSourceProperty);
}
public static string GetHtml(WebView obj)
{
return (string)obj.GetValue(HtmlProperty);
}
/// <summary>
/// Gets a value indicating whether this is a looping FlipView
/// </summary>
/// <param name="obj">the flipView</param>
/// <returns>true if the list loops</returns>
public static string GetStringContent(WebView obj)
{
return (string)obj.GetValue(StringContentProperty);
}
/// <summary>
/// Gets a value indicating whether this is a looping FlipView
/// </summary>
/// <param name="obj">the flipView</param>
/// <returns>true if the list loops</returns>
public static string GetSourceBinding(WebView obj)
{
return (string)obj.GetValue(SourceBindingProperty);
}
private async void NavigationCompleteB(Windows.UI.Xaml.Controls.WebView webView, WebViewNavigationCompletedEventArgs args)
{
webView.NavigationCompleted -= NavigationCompleteB;
webView.NavigationCompleted += NavigationCompleteC;
IsMainPageChild(webView);
using (InMemoryRandomAccessStream ms = new InMemoryRandomAccessStream())
{
System.Diagnostics.Debug.WriteLine("B webView.Size=[" + webView.Width + "," + webView.Height + "] IsOnMainThread=[" + P42.Utils.Environment.IsOnMainThread + "]");
try
{
var width = (int)webView.GetValue(PngWidthProperty);
System.Diagnostics.Debug.WriteLine("B width=[" + width + "]");
var contentSize = await webView.WebViewContentSizeAsync();
System.Diagnostics.Debug.WriteLine("B contentSize=[" + contentSize + "]");
System.Diagnostics.Debug.WriteLine("B webView.Size=[" + webView.Width + "," + webView.Height + "] IsOnMainThread=[" + P42.Utils.Environment.IsOnMainThread + "]");
if (contentSize.Height != webView.Height || width != webView.Width)
{
webView.Width = contentSize.Width;
webView.Height = contentSize.Height;
System.Diagnostics.Debug.WriteLine("B webView.Size=[" + webView.Width + "," + webView.Height + "] IsOnMainThread=[" + P42.Utils.Environment.IsOnMainThread + "]");
webView.InvalidateMeasure();
System.Diagnostics.Debug.WriteLine("B webView.Size=[" + webView.Width + "," + webView.Height + "] IsOnMainThread=[" + P42.Utils.Environment.IsOnMainThread + "]");
}
//await Task.Delay(2000);
await webView.CapturePreviewToStreamAsync(ms);
var decoder = await BitmapDecoder.CreateAsync(ms);
var transform = new BitmapTransform
{
//ScaledHeight = (uint)decoder.PixelHeight,
//ScaledWidth = (uint)decoder.PixelWidth
ScaledHeight = (uint)Math.Ceiling(webView.Height),
ScaledWidth = (uint)Math.Ceiling(webView.Width)
};
var pixelData = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Straight,
transform,
ExifOrientationMode.RespectExifOrientation,
ColorManagementMode.DoNotColorManage);
var bytes = pixelData.DetachPixelData();
var piclib = Windows.Storage.ApplicationData.Current.TemporaryFolder;
var fileName = (string)webView.GetValue(PngFileNameProperty) + ".png";
var file = await piclib.CreateFileAsync(fileName, Windows.Storage.CreationCollisionOption.GenerateUniqueName);
using (var stream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, stream);
encoder.SetPixelData(BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Ignore,
//(uint)decoder.PixelWidth, (uint)decoder.PixelHeight,
(uint)Math.Ceiling(webView.Width), (uint)Math.Ceiling(webView.Height),
0, 0, bytes);
await encoder.FlushAsync();
}
webView.Width = (int)webView.GetValue(BeforeWidthProperty);
webView.Height = (int)webView.GetValue(BeforeHeightProperty);
webView.Refresh();
var toFileResult = new ToFileResult(false, file.Path);
webView.SetValue(ToFileResultProperty, toFileResult);
}
catch (Exception e)
{
webView.Width = (int)webView.GetValue(BeforeWidthProperty);
webView.Height = (int)webView.GetValue(BeforeHeightProperty);
webView.Refresh();
var toFileResult = new ToFileResult(true, e.InnerException?.Message ?? e.Message);
webView.SetValue(ToFileResultProperty, toFileResult);
}
}
webView.Refresh();
}
