public async Task SaveImageDialog(ICanvasDataService canvasData, InkStrokeContainer container)
{
var picker = new FileSavePicker();
picker.FileTypeChoices.Add("JPEG images", new List <string>()
{
".jpg"
});
picker.FileTypeChoices.Add("PNG images", new List <string>()
{
".png"
});
picker.DefaultFileExtension = ".jpg";
picker.SuggestedFileName = canvasData.Name;
picker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
var storageFile = await picker.PickSaveFileAsync();
if (storageFile != null)
{
canvasData.FullPath = storageFile.Path;
canvasData.FutureAccessToken = StorageApplicationPermissions.FutureAccessList.Add(storageFile);
var softwareBitmap = await canvasData.SaveToBitmap(container);
await ImageWriterService.WriteSoftwareBitmapToFile(storageFile, softwareBitmap);
}
}
private static async Task ProcessSharedImage(IRandomAccessStream stream, ShareOperation operation, string fileName)
{
var canvasData = await ImageWriterService.StreamToCanvasData(stream, fileName);
operation.ReportDataRetrieved();
NavigateToMain(canvasData);
}
public static async Task OnShareTargetActivated(ShareTargetActivatedEventArgs args)
{
var shareOperation = args.ShareOperation;
shareOperation.ReportStarted();
if (shareOperation.Data.Contains(StandardDataFormats.StorageItems))
{
var items = await shareOperation.Data.GetStorageItemsAsync();
foreach (var item in items)
{
if (item is StorageFile file)
{
var canvasData = await ImageWriterService.StorageFileToCanvasData(file);
shareOperation.ReportDataRetrieved();
NavigateToMain(canvasData);
}
}
}
else if (shareOperation.Data.Contains(StandardDataFormats.Bitmap))
{
var reference = await shareOperation.Data.GetBitmapAsync();
using (var stream = await reference.OpenReadAsync())
{
await ProcessSharedImage(
stream,
shareOperation,
ResourceLoader.GetForCurrentView().GetString(NEW_IMAGE_NAME_KEY));
}
}
}
public static async Task OnFileActivated(FileActivatedEventArgs args)
{
foreach (var f in args.Files)
{
if (f is StorageFile storageFile)
{
using (var stream = await storageFile.OpenReadAsync())
{
await ImageWriterService.StreamToCanvasData(stream, storageFile.DisplayName);
}
}
}
}
public async Task Save(ICanvasDataService canvasData, InkStrokeContainer container)
{
if (canvasData.FullPath == null)
{
await SaveImageDialog(canvasData, container);
}
else
{
var softwareBitmap = await canvasData.SaveToBitmap(container);
var file = await StorageApplicationPermissions.FutureAccessList.GetFileAsync(canvasData.FutureAccessToken);
await ImageWriterService.WriteSoftwareBitmapToFile(file, softwareBitmap);
}
}
public async Task <ImageCanvasDataService> OpenImageDialog()
{
var picker = new FileOpenPicker
{
ViewMode = PickerViewMode.Thumbnail,
SuggestedStartLocation = PickerLocationId.PicturesLibrary
};
picker.FileTypeFilter.Add(".jpg");
picker.FileTypeFilter.Add(".png");
var file = await picker.PickSingleFileAsync();
ImageCanvasDataService result = null;
if (file != null)
{
result = await ImageWriterService.StorageFileToCanvasData(file);
}
return(result);
}
