private async void MyBtn_Click(object sender, RoutedEventArgs e)
{
using (HttpClient client = new HttpClient())
{
var svg = new SvgImageSource();
try
{
var response = await client.GetAsync(new Uri("http://www.iconsvg.com/Home/downloadPicture?route=1333158662629220352&name=%E5%9C%86%E5%BD%A2%E7%9A%84_circular164"));
if (response != null && response.StatusCode == HttpStatusCode.OK)
{
using (var stream = await response.Content.ReadAsStreamAsync())
{
using (var memStream = new MemoryStream())
{
await stream.CopyToAsync(memStream);
memStream.Position = 0;
await svg.SetSourceAsync(memStream.AsRandomAccessStream());
MyImageView.Source = svg;
}
}
}
}
catch (Exception ex)
{
}
}
}
/// <inheritdoc />
public override async Task InvokeAsync(ILoadingContext <ImageSource> context, LoadingPipeDelegate <ImageSource> next, CancellationToken cancellationToken = default)
{
if (context.Current is Stream stream)
{
if (!stream.CanSeek)
{
var memoryStream = new MemoryStream();
await stream.CopyToAsync(memoryStream);
if (!ReferenceEquals(stream, context.OriginSource))
{
// if the stream generated by the pipe then dispose it.
stream.Dispose();
}
memoryStream.Seek(0, SeekOrigin.Begin);
stream = memoryStream;
}
var isSvg = IsSvg(stream);
var tcs = new TaskCompletionSource <object?>();
context.InvokeOnUIThread(async() =>
{
try
{
if (isSvg)
{
var bitmap = new SvgImageSource();
context.AttachSource(bitmap);
var svgImageLoadStatus = await bitmap.SetSourceAsync(stream.AsRandomAccessStream());
if (svgImageLoadStatus != SvgImageSourceLoadStatus.Success)
{
throw new SvgImageFailedStatusException(svgImageLoadStatus);
}
cancellationToken.ThrowIfCancellationRequested();
context.Current = bitmap;
}
else
{
// https://docs.microsoft.com/en-us/windows/uwp/debug-test-perf/optimize-animations-and-media?redirectedfrom=MSDN#right-sized-decoding
// Set source after attached to the XAML tree
var bitmap = new BitmapImage();
context.AttachSource(bitmap);
await bitmap.SetSourceAsync(stream.AsRandomAccessStream());
cancellationToken.ThrowIfCancellationRequested();
context.Current = bitmap;
}
tcs.SetResult(null);
}
catch (Exception ex)
{
tcs.SetException(ex);
}
});
await tcs.Task;
}
await next(context, cancellationToken);
}
public object Convert(object value, Type targetType, object parameter, string language)
{
var svg = new SvgImageSource();
using (HttpClient client = new HttpClient())
{
try
{
var response = client.GetAsync(new Uri(value as string)).Result;
if (response != null && response.StatusCode == HttpStatusCode.OK)
{
using (var stream = response.Content.ReadAsStreamAsync().Result)
{
using (var memStream = new MemoryStream())
{
stream.CopyToAsync(memStream);
memStream.Position = 0;
svg.SetSourceAsync(memStream.AsRandomAccessStream());
}
}
}
}
catch (Exception ex)
{
}
}
return(svg);
}
public async void Open(Image display)
{
try
{
FileOpenPicker picker = new FileOpenPicker()
{
SuggestedStartLocation = PickerLocationId.PicturesLibrary
};
picker.FileTypeFilter.Add(".svg");
StorageFile open = await picker.PickSingleFileAsync();
if (open != null)
{
SvgImageSource source = new SvgImageSource()
{
RasterizePixelHeight = display.ActualHeight,
RasterizePixelWidth = display.ActualWidth
};
if (await source.SetSourceAsync(await open.OpenReadAsync())
== SvgImageSourceLoadStatus.Success)
{
display.Source = source;
}
}
}
finally
{
// Ignore Exceptions
}
}
private async void RenderFourierTransform()
{
var stream = await ImageListClass.FileSourceList[myID].OpenAsync(FileAccessMode.Read);
SvgImageSource image = new SvgImageSource();
await image.SetSourceAsync(stream);
NormalImageControl.Source = image;
}
public static async Task <SvgImageSource> StorageFileToSvgImage(StorageFile savedStorageFile)
{
using (var fileStream = await savedStorageFile.OpenAsync(FileAccessMode.Read))
{
var svgImage = new SvgImageSource();
await svgImage.SetSourceAsync(fileStream);
return(svgImage);
}
}
private async void LoadSvg()
{
generator = new SVGGenerator();
await generator.LoadSvg();
var generationCancellationTokenSource = new CancellationTokenSource();
var souce = await generator.GetSourceAsync(generationCancellationTokenSource.Token);
SvgSource = new SvgImageSource();
await SvgSource.SetSourceAsync(souce);
}
private async Task RenderSvg()
{
using (var stream = new InMemoryRandomAccessStream())
{
await RenderSvg(stream);
var image = new SvgImageSource();
await image.SetSourceAsync(stream);
ResultSvgImage.Source = image;
}
}
private async void OpenFile(StorageFile file)
{
ImageListClass.FileSourceList[myID] = file;
var stream = await ImageListClass.FileSourceList[myID].OpenAsync(FileAccessMode.Read);
SvgImageSource image = new SvgImageSource();
await image.SetSourceAsync(stream);
ImageControl.Source = image;
noImageText.Visibility = Visibility.Collapsed;
MetadataButton.Visibility = Visibility.Visible;
FourierButton.Visibility = Visibility.Visible;
ClearMetadataButton.Visibility = Visibility.Visible;
}
private async void SignIn_Click(object sender, RoutedEventArgs e)
{
viewModel.Loading = true;
await Dispatcher.YieldAsync();
try
{
var result = await(string.IsNullOrEmpty(viewModel.Captcha) ? UserModel.SignInAsync(viewModel.UserName, viewModel.Password)
: UserModel.SignInAsync(viewModel.UserName, viewModel.Password, viewModel.Captcha));
if (result?.Data == null)
{
throw new InvalidOperationException("Network Error");
}
this.parameters?.ShowMessage?.Invoke(result.Message);
this.parameters?.UpdateUserData?.Invoke(result.Data);
if (!result.Data.Captcha)
{
return;
}
var captcha = await UserModel.FetchCaptchaAsync();
var stream = new MemoryStream();
using var writer = new StreamWriter(stream);
await writer.WriteAsync(captcha.Data?.Captcha);
await writer.FlushAsync();
stream.Position = 0;
var svg = new SvgImageSource {
RasterizePixelWidth = 150, RasterizePixelHeight = 50
};
await svg.SetSourceAsync(stream.AsRandomAccessStream());
viewModel.CaptchaData = svg;
}
catch (Exception ex)
{
App.AppConfiguration.SavedUserName = "";
App.AppConfiguration.SavedPassword = "";
this.parameters?.ShowMessage?.Invoke(ex.Message);
}
finally
{
viewModel.Loading = false;
}
}
private async Task LoadCaptcha()
{
string captcha = "";
try {
captcha = await Model.MatrixRequest.GetCaptcha();
} catch (MatrixException.NetworkError) {
ShowMessage("网络错误，无法获取验证码");
}
// cast string to IRandomAccessStream
var stream = new MemoryStream();
using (var writer = new StreamWriter(stream)) {
writer.Write(captcha);
writer.Flush();
stream.Position = 0;
var svg = new SvgImageSource();
await svg.SetSourceAsync(stream.AsRandomAccessStream());
viewModel.CaptchaSource = svg;
}
}
public override async Task InvokeAsync(ILoadingContext <ImageSource> context, PipeDelegate <ImageSource> next, CancellationToken cancellationToken = default(CancellationToken))
{
if (context.Current is Stream stream)
{
var isStartWithLessThanSign = false;
if (stream.CanSeek)
{
stream.Seek(0, SeekOrigin.Begin);
isStartWithLessThanSign = stream.ReadByte() == '<'; // svg start with <
stream.Seek(0, SeekOrigin.Begin);
}
if (isStartWithLessThanSign)
{
var bitmap = new SvgImageSource();
var svgImageLoadStatus = await bitmap.SetSourceAsync(stream.AsRandomAccessStream());
if (svgImageLoadStatus != SvgImageSourceLoadStatus.Success)
{
throw new SvgImageFailedStatusException(svgImageLoadStatus);
}
cancellationToken.ThrowIfCancellationRequested();
context.Current = bitmap;
}
else
{
var bitmap = new BitmapImage();
await bitmap.SetSourceAsync(stream.AsRandomAccessStream());
cancellationToken.ThrowIfCancellationRequested();
context.Current = bitmap;
}
}
await next(context, cancellationToken);
}
private async void List_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
_cancelGetDetails.Cancel(false);
_cancelGetDetails.Dispose();
_cancelGetDetails = new CancellationTokenSource();
if (_list.SelectedItem is DriveItem driveItem && driveItem.File != null)
{
try
{
SelectedFile = driveItem;
FileSize = driveItem.Size ?? 0;
LastModified = driveItem.LastModifiedDateTime?.LocalDateTime.ToString() ?? string.Empty;
if (FileSelected != null)
{
FileSelected.Invoke(this, new FileSelectedEventArgs(driveItem));
}
ThumbnailImageSource = null;
VisualStateManager.GoToState(this, NavStatesFileReadonly, false);
GraphServiceClient graphClient = await GraphServiceHelper.GetGraphServiceClientAsync();
if (graphClient != null)
{
Task <IDriveItemPermissionsCollectionPage> taskPermissions = graphClient.Drives[_driveId].Items[driveItem.Id].Permissions.Request().GetAsync(_cancelGetDetails.Token);
IDriveItemPermissionsCollectionPage permissions = await taskPermissions;
if (!taskPermissions.IsCanceled)
{
foreach (Permission permission in permissions)
{
if (permission.Roles.Contains("write") || permission.Roles.Contains("owner"))
{
VisualStateManager.GoToState(this, NavStatesFileEdit, false);
break;
}
}
Task <IDriveItemThumbnailsCollectionPage> taskThumbnails = graphClient.Drives[_driveId].Items[driveItem.Id].Thumbnails.Request().GetAsync(_cancelGetDetails.Token);
IDriveItemThumbnailsCollectionPage thumbnails = await taskThumbnails;
if (!taskThumbnails.IsCanceled)
{
ThumbnailSet thumbnailsSet = thumbnails.FirstOrDefault();
if (thumbnailsSet != null)
{
Thumbnail thumbnail = thumbnailsSet.Large;
if (thumbnail.Url.Contains("inputFormat=svg"))
{
SvgImageSource source = new SvgImageSource();
using (Stream inputStream = await graphClient.Drives[_driveId].Items[driveItem.Id].Content.Request().GetAsync())
{
SvgImageSourceLoadStatus status = await source.SetSourceAsync(inputStream.AsRandomAccessStream());
if (status == SvgImageSourceLoadStatus.Success)
{
ThumbnailImageSource = source;
}
}
}
else
{
ThumbnailImageSource = new BitmapImage(new Uri(thumbnail.Url));
}
}
}
IsDetailPaneVisible = true;
ShowDetailsPane();
}
}
}
catch (Exception exception)
{
MessageDialog messageDialog = new MessageDialog(exception.Message);
await messageDialog.ShowAsync();
}
}
private async void LoadClicked(object sender, RoutedEventArgs e)
{
img.Source = null;
await Task.Yield();
log.Text = "";
isLoaded.IsChecked = false;
isError.IsChecked = false;
imgIsLoaded.IsChecked = false;
imgIsError.IsChecked = false;
var uri = new Uri(url.Text);
ImageSource source = null;
await Task.Yield();
var stream = (streamMode.IsChecked ?? false) ? await GetStream() : null;
var mode = (sender as FrameworkElement)?.Tag as string;
Log($"Loading {url.Text} using {mode}...");
switch (mode)
{
case "BitmapImage":
{
BitmapImage bitmapSource;
if (stream == null)
{
bitmapSource = new BitmapImage(uri);
}
else
{
bitmapSource = new BitmapImage();
await bitmapSource.SetSourceAsync(stream);
}
bitmapSource.DownloadProgress += (snd, evt) => Log($"Downloadind... {evt.Progress}%");
bitmapSource.ImageFailed += (snd, evt) =>
{
isError.IsChecked = true;
Log($"ERROR: {evt.ErrorMessage}");
};
bitmapSource.ImageOpened += (snd, evt) =>
{
isLoaded.IsChecked = true;
Log($"LOADED from {evt.OriginalSource}");
};
source = bitmapSource;
break;
}
case "SvgImageSource":
{
SvgImageSource svgSource;
if (stream == null)
{
svgSource = new SvgImageSource(uri);
}
else
{
svgSource = new SvgImageSource();
await svgSource.SetSourceAsync(stream);
}
svgSource.OpenFailed += (snd, evt) =>
{
isError.IsChecked = true;
Log($"ERROR: {evt.Status}");
};
svgSource.Opened += (snd, evt) =>
{
isLoaded.IsChecked = true;
Log("LOADED");
};
source = svgSource;
break;
}
case "SvgImageSource2":
{
var border = img.Parent as FrameworkElement;
SvgImageSource svgSource;
if (stream == null)
{
svgSource = new SvgImageSource(uri);
}
else
{
svgSource = new SvgImageSource();
await svgSource.SetSourceAsync(stream);
}
source = svgSource;
Log($"RasterizePixelWidth/Height: {border.ActualWidth}x{border.ActualHeight}");
svgSource.RasterizePixelWidth = border.ActualWidth;
svgSource.RasterizePixelHeight = border.ActualHeight;
svgSource.OpenFailed += (snd, evt) =>
{
isError.IsChecked = true;
Log($"ERROR: {evt.Status}");
};
svgSource.Opened += (snd, evt) =>
{
isLoaded.IsChecked = true;
Log("LOADED");
};
break;
}
}
img.Source = source;
void Log(string msg)
{
log.Text += msg + "\n";
}
}
private async void OnDrop(object sender, DragEventArgs e)
{
// 需要异步拖放时记得获取Deferral对象
//var def = e.GetDeferral();
if (sender == imgBase64 || sender == rectDrop)
{
if (e.DataView.Contains(StandardDataFormats.StorageItems))
{
var items = await e.DataView.GetStorageItemsAsync();
if (items.Count > 0)
{
var storageFile = items[0] as StorageFile;
if (Utils.image_ext.Contains(storageFile.FileType.ToLower()))
{
if (storageFile.FileType.ToLower().Equals(".svg"))
{
var bitmapImage = new SvgImageSource();
if (e.DataView.Contains(StandardDataFormats.WebLink))
{
var url = await e.DataView.GetWebLinkAsync();
var rms = await RandomAccessStreamReference.CreateFromUri(url).OpenReadAsync();
var svg = await SVG.CreateFromStream(rms);
bitmapImage = svg.Source;
imgBase64.Tag = svg.Bytes;
}
else if (e.DataView.Contains(StandardDataFormats.Text))
{
var content = await e.DataView.GetTextAsync();
if (content.Length > 0)
{
var rms = await RandomAccessStreamReference.CreateFromUri(new Uri(content)).OpenReadAsync();
var svg = await SVG.CreateFromStream(rms);
bitmapImage = svg.Source;
imgBase64.Tag = svg.Bytes;
}
}
else
{
var svg = await SVG.CreateFromStorageFile(storageFile);
bitmapImage = svg.Source;
imgBase64.Tag = svg.Bytes;
}
imgBase64.Source = bitmapImage;
}
else
{
var bitmapImage = new WriteableBitmap(1, 1);
if (e.DataView.Contains(StandardDataFormats.WebLink))
{
var url = await e.DataView.GetWebLinkAsync();
await bitmapImage.SetSourceAsync(await RandomAccessStreamReference.CreateFromUri(url).OpenReadAsync());
}
else if (e.DataView.Contains(StandardDataFormats.Text))
{
//var content = await e.DataView.GetHtmlFormatAsync();
var content = await e.DataView.GetTextAsync();
if (content.Length > 0)
{
await bitmapImage.SetSourceAsync(await RandomAccessStreamReference.CreateFromUri(new Uri(content)).OpenReadAsync());
}
}
else
{
await bitmapImage.SetSourceAsync(await storageFile.OpenReadAsync());
}
byte[] arr = WindowsRuntimeBufferExtensions.ToArray(bitmapImage.PixelBuffer, 0, (int)bitmapImage.PixelBuffer.Length);
imgBase64.Source = bitmapImage;
}
}
}
}
else if (e.DataView.Contains(StandardDataFormats.WebLink))
{
var uri = await e.DataView.GetWebLinkAsync();
StorageFile storageFile = await StorageFile.GetFileFromApplicationUriAsync(uri);
if (Utils.image_ext.Contains(storageFile.FileType.ToLower()))
{
if (storageFile.FileType.ToLower().Equals(".svg"))
{
var bitmapImage = new SvgImageSource();
if (e.DataView.Contains(StandardDataFormats.WebLink))
{
var url = await e.DataView.GetWebLinkAsync();
var rms = await RandomAccessStreamReference.CreateFromUri(url).OpenReadAsync();
var svg = await SVG.CreateFromStream(rms);
bitmapImage = svg.Source;
imgBase64.Tag = svg.Bytes;
}
else if (e.DataView.Contains(StandardDataFormats.Text))
{
//var content = await e.DataView.GetHtmlFormatAsync();
var content = await e.DataView.GetTextAsync();
if (content.Length > 0)
{
var rms = await RandomAccessStreamReference.CreateFromUri(new Uri(content)).OpenReadAsync();
var svg = await SVG.CreateFromStream(rms);
bitmapImage = svg.Source;
imgBase64.Tag = svg.Bytes;
}
}
else
{
await bitmapImage.SetSourceAsync(await storageFile.OpenReadAsync());
byte[] bytes = WindowsRuntimeBufferExtensions.ToArray(await FileIO.ReadBufferAsync(storageFile));
imgBase64.Tag = bytes;
}
imgBase64.Source = bitmapImage;
}
else
{
var bitmapImage = new WriteableBitmap(1, 1);
if (e.DataView.Contains(StandardDataFormats.WebLink))
{
var url = await e.DataView.GetWebLinkAsync();
await bitmapImage.SetSourceAsync(await RandomAccessStreamReference.CreateFromUri(url).OpenReadAsync());
}
else if (e.DataView.Contains(StandardDataFormats.Text))
{
var content = await e.DataView.GetTextAsync();
if (content.Length > 0)
{
await bitmapImage.SetSourceAsync(await RandomAccessStreamReference.CreateFromUri(new Uri(content)).OpenReadAsync());
}
}
else
{
await bitmapImage.SetSourceAsync(await storageFile.OpenReadAsync());
}
byte[] arr = WindowsRuntimeBufferExtensions.ToArray(bitmapImage.PixelBuffer, 0, (int)bitmapImage.PixelBuffer.Length);
imgBase64.Source = bitmapImage;
}
}
}
}
else if (sender == edBase64)
{
if (e.DataView.Contains(StandardDataFormats.StorageItems))
{
var items = await e.DataView.GetStorageItemsAsync();
if (items.Count > 0)
{
var storageFile = items[0] as StorageFile;
if (Utils.url_ext.Contains(storageFile.FileType.ToLower()))
{
if (e.DataView.Contains(StandardDataFormats.WebLink))
{
var url = await e.DataView.GetWebLinkAsync();
if (url.IsAbsoluteUri)
{
edBase64.Text = url.ToString();
}
else if (url.IsFile || url.IsUnc)
{
edBase64.Text = await FileIO.ReadTextAsync(storageFile);
}
}
else if (e.DataView.Contains(StandardDataFormats.Text))
{
//var content = await e.DataView.GetHtmlFormatAsync();
var content = await e.DataView.GetTextAsync();
if (content.Length > 0)
{
edBase64.Text = content;
}
}
}
else if (Utils.text_ext.Contains(storageFile.FileType.ToLower()))
{
edBase64.Text = await FileIO.ReadTextAsync(storageFile);
}
}
}
else if (e.DataView.Contains(StandardDataFormats.WebLink))
{
var uri = await e.DataView.GetWebLinkAsync();
StorageFile file = await StorageFile.GetFileFromApplicationUriAsync(uri);
if (!file.FileType.ToLower().Equals(".txt"))
{
return;
}
edBase64.Text = await FileIO.ReadTextAsync(file);
}
else if (e.DataView.Contains(StandardDataFormats.Text))
{
var content = await e.DataView.GetTextAsync();
if (content.Length > 0)
{
edBase64.Text = content;
}
}
}
await IsSVG(imgBase64);
//def.Complete();
}