/// <summary>
/// Loads an image from the file system and calls the ImageLoaded XAML control
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void ImageLoadButton_Click(object sender, RoutedEventArgs e)
{
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".png");
openPicker.FileTypeFilter.Add(".gif");
openPicker.FileTypeFilter.Add(".bmp");
StorageFile file = await openPicker.PickSingleFileAsync();
if (file != null)
{
var stream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
Windows.Graphics.Imaging.BitmapDecoder decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(stream);
_LocalPersistentObject.bitmapProcessingImage = BitmapFactory.New((int)decoder.PixelWidth, (int)decoder.PixelHeight);
_LocalPersistentObject.bitmapProcessingImage.SetSource(stream);
_LocalPersistentObject.originalLoadedImage = _LocalPersistentObject.bitmapProcessingImage;
}
MainImageFrame.Navigate(typeof(ImageLoadedView), _LocalPersistentObject);
}
/// <summary>
/// Cropping tool for the Image
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
///
private async void CropImageButton_Click(object sender, RoutedEventArgs e)
{
if (_LocalPersistentObject.bitmapProcessingImage == null)
{
return;
}
if (!_LocalPersistentObject.isCroppingImage)
{
MainImageFrame.Navigate(typeof(ImageCroppingView), _LocalPersistentObject);
CropImageButton.Background = new SolidColorBrush(Windows.UI.Color.FromArgb(255, 245, 245, 220)); // Beige: 245, 245, 220
CropImageButton.Foreground = new SolidColorBrush(Windows.UI.Color.FromArgb(255, 0, 0, 0));
}
else
{
// MainImageFrame.Navigate(typeof(ImageCropping), _LocalPersistentObject);
CropImageButton.Foreground = new SolidColorBrush(Windows.UI.Color.FromArgb(255, 245, 245, 220)); // Beige: 245, 245, 220
CropImageButton.Background = new SolidColorBrush(Windows.UI.Color.FromArgb(255, 0, 0, 0));
_LocalPersistentObject.isCroppingImage = false;
ImageCroppingView imageCroppingRef = _LocalPersistentObject.ImageCropperInstance as ImageCroppingView;
_LocalPersistentObject.bitmapProcessingImage = await imageCroppingRef.GetCropppedImageBitmap();
MainImageFrame.Navigate(typeof(ImageLoadedView), _LocalPersistentObject, new SuppressNavigationTransitionInfo());
}
}
private void EditImageButton_Click(object sender, RoutedEventArgs e)
{
if (_LocalPersistentObject.bitmapProcessingImage == null)
{
return;
}
MainImageFrame.Navigate(typeof(EditImageView), _LocalPersistentObject);
}
/// <summary>
/// Reset the currently loaded image to its original instance.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
///
private void ResetImage_Click(object sender, RoutedEventArgs e)
{
if (_LocalPersistentObject.bitmapProcessingImage == null)
{
return;
}
_LocalPersistentObject.bitmapProcessingImage = _LocalPersistentObject.originalLoadedImage;
MainImageFrame.Navigate(typeof(ImageLoadedView), _LocalPersistentObject, new SuppressNavigationTransitionInfo());
}
/// <summary>
/// Use AForge to automatically detect the image borders, and crop it to size
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void AutoFitImage_Click(object sender, RoutedEventArgs e)
{
if (_LocalPersistentObject.bitmapProcessingImage == null)
{
return;
}
WriteableBitmap bmp = _LocalPersistentObject.bitmapProcessingImage as WriteableBitmap;
bmp = bmp.Resize(1024, 1024, WriteableBitmapExtensions.Interpolation.Bilinear);
Bitmap image = AForge.Imaging.Image.Clone((Bitmap)bmp, System.Drawing.Imaging.PixelFormat.Format8bppIndexed);
BlobCounter blobCounter = new BlobCounter();
blobCounter.FilterBlobs = true;
blobCounter.MinHeight = 50;
blobCounter.MinWidth = 50;
blobCounter.ProcessImage(image);
Blob[] blobs = blobCounter.GetObjectsInformation();
// check for rectangles
SimpleShapeChecker shapeChecker = new SimpleShapeChecker();
foreach (var blob in blobs)
{
List <IntPoint> edgePoints = blobCounter.GetBlobsEdgePoints(blob);
List <IntPoint> cornerPoints;
// use the shape checker to extract the corner points
if (shapeChecker.IsQuadrilateral(edgePoints, out cornerPoints))
{
// only do things if the corners form a rectangle
if (shapeChecker.CheckPolygonSubType(cornerPoints) == PolygonSubType.Square)
{
// here i use the graphics class to draw an overlay, but you
// could also just use the cornerPoints list to calculate your
// x, y, width, height values.
List <AForge.Point> Points = new List <AForge.Point>();
bmp = bmp.Crop(cornerPoints[0].X,
cornerPoints[0].Y,
cornerPoints[2].X,
cornerPoints[2].Y);
}
}
}
bmp = bmp.Resize(640, 640, WriteableBitmapExtensions.Interpolation.Bilinear);
_LocalPersistentObject.bitmapProcessingImage = (WriteableBitmap)bmp;
MainImageFrame.Navigate(typeof(ImageLoadedView), _LocalPersistentObject, new SuppressNavigationTransitionInfo());
}
/// <summary>
/// Loaded automatically when this window is loaded
/// </summary>
/// <param name="e"></param>
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
_LocalPersistentObject = e.Parameter as PersistentObjects;
if (_LocalPersistentObject != null)
{
if (_LocalPersistentObject.originalLoadedImage != null)
{
MainImageFrame.Navigate(typeof(ImageLoadedView), _LocalPersistentObject);
}
}
}
