private async void ExportImage()
{
CanvasDevice device = CanvasDevice.GetSharedDevice();
using (CanvasRenderTarget offscreen = new CanvasRenderTarget(device, item.ImageBitmap.PixelWidth, item.ImageBitmap.PixelHeight, 96))
{
using (IRandomAccessStream stream = new InMemoryRandomAccessStream())
{
await item.ImageBitmap.ToStream(stream, BitmapEncoder.BmpEncoderId);
using (CanvasBitmap image = await CanvasBitmap.LoadAsync(offscreen, stream))
{
ImageEffectsBrush.SetSource(image);
using (CanvasDrawingSession ds = offscreen.CreateDrawingSession())
{
ds.Clear(Windows.UI.Colors.Black);
var img = ImageEffectsBrush.Image;
ds.DrawImage(img);
}
}
//stream.Dispose();
}
using (IRandomAccessStream outstream = new InMemoryRandomAccessStream())
{
WriteableBitmap writeableBitmap = new WriteableBitmap(ImageSource.PixelWidth, ImageSource.PixelHeight);
await offscreen.SaveAsync(outstream, CanvasBitmapFileFormat.Bmp);
outstream.Seek(0);
writeableBitmap.SetSource(outstream);
_LocalPersistentObject.bitmapProcessingImage = writeableBitmap;
ThumbnailImage.Source = _LocalPersistentObject.bitmapProcessingImage;
}
}
}
private async void ExportImage()
{
CanvasDevice device = CanvasDevice.GetSharedDevice();
using (CanvasRenderTarget offscreen = new CanvasRenderTarget(
device, item.ImageProperties.Width, item.ImageProperties.Height, 96))
{
using (IRandomAccessStream stream = await item.ImageFile.OpenReadAsync())
using (CanvasBitmap image = await CanvasBitmap.LoadAsync(offscreen, stream, 96))
{
ImageEffectsBrush.SetSource(image);
using (CanvasDrawingSession ds = offscreen.CreateDrawingSession())
{
ds.Clear(Windows.UI.Colors.Black);
var img = ImageEffectsBrush.Image;
ds.DrawImage(img);
}
var fileSavePicker = new FileSavePicker()
{
SuggestedStartLocation = PickerLocationId.PicturesLibrary,
SuggestedSaveFile = item.ImageFile
};
fileSavePicker.FileTypeChoices.Add("JPEG files", new List <string>()
{
".jpg"
});
var outputFile = await fileSavePicker.PickSaveFileAsync();
if (outputFile != null)
{
using (IRandomAccessStream outStream = await outputFile.OpenAsync(FileAccessMode.ReadWrite))
{
await offscreen.SaveAsync(outStream, CanvasBitmapFileFormat.Jpeg);
}
// Check whether this save is overwriting the original image.
// If it is, replace it in the list. Otherwise, insert it as a copy.
bool replace = false;
if (outputFile.IsEqual(item.ImageFile))
{
replace = true;
}
try
{
await LoadSavedImageAsync(outputFile, replace);
}
catch (Exception ex)
{
if (ex.Message.Contains("0x80070323"))
{
// The handle with which this oplock was associated has been closed.
// The oplock is now broken. (Exception from HRESULT: 0x80070323)
// This is a temporary condition, so just try again.
await LoadSavedImageAsync(outputFile, replace);
}
}
}
}
}
}
private async void ExportImage()
{
// We haven't enabled image export for phone.
var qualifiers = Windows.ApplicationModel.Resources.Core.ResourceContext.GetForCurrentView().QualifierValues;
if (qualifiers.ContainsKey("DeviceFamily") && qualifiers["DeviceFamily"] == "Mobile")
{
ContentDialog notSupportedDialog = new ContentDialog
{
Title = "Export is not enabled",
Content = "Image export is not enabled on phones.",
CloseButtonText = "OK",
};
ContentDialogResult result = await notSupportedDialog.ShowAsync();
return;
}
// Not on phone, so export image.
CanvasDevice device = CanvasDevice.GetSharedDevice();
using (CanvasRenderTarget offscreen = new CanvasRenderTarget(
device, item.ImageProperties.Width, item.ImageProperties.Height, 96))
{
using (IRandomAccessStream stream = await item.ImageFile.OpenReadAsync())
using (CanvasBitmap image = await CanvasBitmap.LoadAsync(offscreen, stream, 96))
{
ImageEffectsBrush.SetSource(image);
using (CanvasDrawingSession ds = offscreen.CreateDrawingSession())
{
ds.Clear(Windows.UI.Colors.Black);
var img = ImageEffectsBrush.Image;
ds.DrawImage(img);
}
var fileSavePicker = new FileSavePicker()
{
SuggestedStartLocation = PickerLocationId.PicturesLibrary,
SuggestedSaveFile = item.ImageFile
};
fileSavePicker.FileTypeChoices.Add("JPEG files", new List <string>()
{
".jpg"
});
var outputFile = await fileSavePicker.PickSaveFileAsync();
if (outputFile != null)
{
using (IRandomAccessStream outStream = await outputFile.OpenAsync(FileAccessMode.ReadWrite))
{
await offscreen.SaveAsync(outStream, CanvasBitmapFileFormat.Jpeg);
}
// Check whether this save is overwriting the original image.
// If it is, replace it in the list. Otherwise, insert it as a copy.
bool replace = false;
if (outputFile.IsEqual(item.ImageFile))
{
replace = true;
}
try
{
await LoadSavedImageAsync(outputFile, replace);
}
catch (Exception ex)
{
if (ex.Message.Contains("0x80070323"))
{
// The handle with which this oplock was associated has been closed.
// The oplock is now broken. (Exception from HRESULT: 0x80070323)
// This is a temporary condition, so just try again.
await LoadSavedImageAsync(outputFile, replace);
}
}
}
}
}
}