public async static Task<WriteableBitmap> ToBitmapImageAsync(this byte[] imageBytes, Tuple<int, int> downscale)
{
if (imageBytes == null)
return null;
IRandomAccessStream image = imageBytes.AsBuffer().AsStream().AsRandomAccessStream();
if (downscale != null && (downscale.Item1 > 0 || downscale.Item2 > 0))
{
image = await image.ResizeImage((uint)downscale.Item1, (uint)downscale.Item2);
}
using (image)
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(image);
image.Seek(0);
WriteableBitmap bitmap = null;
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Low, () =>
{
bitmap = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
bitmap.SetSource(image);
});
return bitmap;
}
}
public async Task<string> clipboard(DataPackageView con)
{
string str = string.Empty;
//文本
if (con.Contains(StandardDataFormats.Text))
{
str = await con.GetTextAsync();
return str;
}
//图片
if (con.Contains(StandardDataFormats.Bitmap))
{
RandomAccessStreamReference img = await con.GetBitmapAsync();
var imgstream = await img.OpenReadAsync();
BitmapImage bitmap = new BitmapImage();
bitmap.SetSource(imgstream);
WriteableBitmap src = new WriteableBitmap(bitmap.PixelWidth, bitmap.PixelHeight);
src.SetSource(imgstream);
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(imgstream);
PixelDataProvider pxprd =
await
decoder.GetPixelDataAsync(BitmapPixelFormat.Bgra8, BitmapAlphaMode.Straight,
new BitmapTransform(), ExifOrientationMode.RespectExifOrientation,
ColorManagementMode.DoNotColorManage);
byte[] buffer = pxprd.DetachPixelData();
str = "image";
StorageFolder folder = await _folder.GetFolderAsync(str);
StorageFile file =
await
folder.CreateFileAsync(
DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() +
DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() +
(ran.Next()%10000).ToString() + ".png", CreationCollisionOption.GenerateUniqueName);
using (var fileStream = await file.OpenAsync(FileAccessMode.ReadWrite))
{
var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, fileStream);
encoder.SetPixelData(BitmapPixelFormat.Bgra8, BitmapAlphaMode.Straight, decoder.PixelWidth,
decoder.PixelHeight, decoder.DpiX, decoder.DpiY, buffer);
await encoder.FlushAsync();
str = $"\n";
}
}
//文件
if (con.Contains(StandardDataFormats.StorageItems))
{
var filelist = await con.GetStorageItemsAsync();
StorageFile file = filelist.OfType<StorageFile>().First();
return await imgfolder(file);
}
return str;
}
private async System.Threading.Tasks.Task <StorageFile> saveImageToFileAsync(RandomAccessStreamReference img)
{
var imgstream = await img.OpenReadAsync();
BitmapImage bitmap = new BitmapImage();
bitmap.SetSource(imgstream);
Windows.UI.Xaml.Media.Imaging.WriteableBitmap src = new Windows.UI.Xaml.Media.Imaging.WriteableBitmap(bitmap.PixelWidth, bitmap.PixelHeight);
src.SetSource(imgstream);
Windows.Graphics.Imaging.BitmapDecoder decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(imgstream);
Windows.Graphics.Imaging.PixelDataProvider pxprd = await decoder.GetPixelDataAsync(Windows.Graphics.Imaging.BitmapPixelFormat.Bgra8, Windows.Graphics.Imaging.BitmapAlphaMode.Straight, new Windows.Graphics.Imaging.BitmapTransform(), Windows.Graphics.Imaging.ExifOrientationMode.RespectExifOrientation, Windows.Graphics.Imaging.ColorManagementMode.DoNotColorManage);
byte[] buffer = pxprd.DetachPixelData();
StorageFolder folder = ApplicationData.Current.LocalFolder;
StorageFile file = await folder.CreateFileAsync(img.GetHashCode() + "clipboardSaved" + ".png",
CreationCollisionOption.ReplaceExisting);
using (var fileStream = await file.OpenAsync(FileAccessMode.ReadWrite)) {
var encoder = await Windows.Graphics.Imaging.BitmapEncoder.CreateAsync(Windows.Graphics.Imaging.BitmapEncoder.PngEncoderId, fileStream);
encoder.SetPixelData(Windows.Graphics.Imaging.BitmapPixelFormat.Bgra8, Windows.Graphics.Imaging.BitmapAlphaMode.Straight, decoder.PixelWidth, decoder.PixelHeight, decoder.DpiX, decoder.DpiY, buffer);
await encoder.FlushAsync();
}
return(file);
}
public async Task<BitmapSource> LoadImageAsync(Stream imageStream, Uri uri)
{
if (imageStream == null)
{
return null;
}
var stream = new InMemoryRandomAccessStream();
imageStream.CopyTo(stream.AsStreamForWrite());
stream.Seek(0);
BitmapImage bitmap = new BitmapImage();
await bitmap.SetSourceAsync(stream);
// convert to a writable bitmap so we can get the PixelBuffer back out later...
// in case we need to edit and/or re-encode the image.
WriteableBitmap bmp = new WriteableBitmap(bitmap.PixelHeight, bitmap.PixelWidth);
stream.Seek(0);
bmp.SetSource(stream);
List<Byte> allBytes = new List<byte>();
byte[] buffer = new byte[4000];
int bytesRead = 0;
while ((bytesRead = await imageStream.ReadAsync(buffer, 0, 4000)) > 0)
{
allBytes.AddRange(buffer.Take(bytesRead));
}
DataContainerHelper.Instance.WriteableBitmapToStorageFile(bmp, uri);
return bmp;
}
/// <summary>
/// Return WriteableBitmap object from a given path
/// </summary>
/// <param name="relativePath">file path</param>
/// <returns>WriteableBitmap</returns>
public static async Task<WriteableBitmap> LoadWriteableBitmap(string relativePath)
{
var storageFile = await Package.Current.InstalledLocation.GetFileAsync(relativePath.Replace('/', '\\'));
var stream = await storageFile.OpenReadAsync();
var wb = new WriteableBitmap(1, 1);
wb.SetSource(stream);
return wb;
}
public async Task<WriteableBitmap> RetrieveAndPutBitmapAsync(StorageFile file)
{
IRandomAccessStream contents = await file.OpenAsync(FileAccessMode.Read);
WriteableBitmap bitmap = new WriteableBitmap(100, 100);
bitmap.SetSource(contents);
_cache.Add(new BitmapCacheItem() { StorageFile = file, Bitmap = bitmap });
Debug.WriteLine("Caching bitmap for file: " + file.Path + "::" + file.Name);
return bitmap;
}
private async Task LoadBitmap(IRandomAccessStream stream)
{
_writeableBitmap = new WriteableBitmap(1, 1);
_writeableBitmap.SetSource(stream);
_writeableBitmap.Invalidate();
await Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
() => ImageTarget.Source = _writeableBitmap);
}
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
try
{
var cameras = await DeviceInformation.FindAllAsync(DeviceClass.VideoCapture);
if (cameras.Count < 1)
{
Error.Text = "No camera found, decoding static image";
await DecodeStaticResource();
return;
}
MediaCaptureInitializationSettings settings;
if (cameras.Count == 1)
{
settings = new MediaCaptureInitializationSettings { VideoDeviceId = cameras[0].Id }; // 0 => front, 1 => back
}
else
{
settings = new MediaCaptureInitializationSettings { VideoDeviceId = cameras[1].Id }; // 0 => front, 1 => back
}
await _mediaCapture.InitializeAsync(settings);
VideoCapture.Source = _mediaCapture;
await _mediaCapture.StartPreviewAsync();
while (_result == null)
{
var photoStorageFile = await KnownFolders.PicturesLibrary.CreateFileAsync("scan.jpg", CreationCollisionOption.GenerateUniqueName);
await _mediaCapture.CapturePhotoToStorageFileAsync(ImageEncodingProperties.CreateJpeg(), photoStorageFile);
var stream = await photoStorageFile.OpenReadAsync();
// initialize with 1,1 to get the current size of the image
var writeableBmp = new WriteableBitmap(1, 1);
writeableBmp.SetSource(stream);
// and create it again because otherwise the WB isn't fully initialized and decoding
// results in a IndexOutOfRange
writeableBmp = new WriteableBitmap(writeableBmp.PixelWidth, writeableBmp.PixelHeight);
stream.Seek(0);
writeableBmp.SetSource(stream);
_result = ScanBitmap(writeableBmp);
await photoStorageFile.DeleteAsync(StorageDeleteOption.PermanentDelete);
}
await _mediaCapture.StopPreviewAsync();
VideoCapture.Visibility = Visibility.Collapsed;
CaptureImage.Visibility = Visibility.Visible;
ScanResult.Text = _result.Text;
}
catch (Exception ex)
{
Error.Text = ex.Message;
}
}
LoadImageAsync(Windows.Storage.StorageFile file)
{
Windows.Storage.FileProperties.ImageProperties imgProp = await file.Properties.GetImagePropertiesAsync();
using (var imgStream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read))
{
var bitmap = new Windows.UI.Xaml.Media.Imaging.WriteableBitmap((int)imgProp.Width, (int)imgProp.Height);
bitmap.SetSource(imgStream);
return(bitmap);
}
}
private async Task LoadImage(StorageFile file)
{
ImageProperties imgProp = await file.Properties.GetImagePropertiesAsync();
using (var imgStream = await file.OpenAsync(FileAccessMode.Read))
{
bitmap = new WriteableBitmap((int)imgProp.Width, (int)imgProp.Height);
bitmap.SetSource(imgStream);
PreviewImage.Source = bitmap;
}
}
private static async Task<BandIcon> LoadIcon(string uri)
{
var imageFile = await StorageFile.GetFileFromApplicationUriAsync(new Uri(uri));
using (var fileStream = await imageFile.OpenAsync(FileAccessMode.Read))
{
var bitmap = new WriteableBitmap(1, 1);
bitmap.SetSource(fileStream);
return bitmap.ToBandIcon();
}
}
public static async Task<WriteableBitmap> LoadImage(StorageFile file)
{
ImageProperties imgProp = await file.Properties.GetImagePropertiesAsync();
using (var imgStream = await file.OpenAsync(FileAccessMode.Read))
{
WriteableBitmap writeablebitmap = new WriteableBitmap((int)imgProp.Width, (int)imgProp.Height);
writeablebitmap.SetSource(imgStream);
return writeablebitmap;
}
}
async void Load(string filename)
{
var file = await Windows.ApplicationModel.Package.Current.InstalledLocation.GetFileAsync(filename);
using (var stream = await file.OpenReadAsync())
{
var bmp = new WriteableBitmap(width, height);
bmp.SetSource(stream);
internalBuffer = bmp.PixelBuffer.ToArray();
}
}
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
try
{
var cameras = await DeviceInformation.FindAllAsync(DeviceClass.VideoCapture);
if (cameras.Count < 1)
{
await DecodeStaticResource();
return;
}
MediaCaptureInitializationSettings settings;
settings = cameras.Count == 1 ? new MediaCaptureInitializationSettings { VideoDeviceId = cameras[0].Id } : new MediaCaptureInitializationSettings { VideoDeviceId = cameras[1].Id };
await _mediaCapture.InitializeAsync(settings);
VideoCapture.Source = _mediaCapture;
await _mediaCapture.StartPreviewAsync();
while (_result == null)
{
var photoStorageFile = await KnownFolders.PicturesLibrary.CreateFileAsync("scan.jpg", CreationCollisionOption.GenerateUniqueName);
await _mediaCapture.CapturePhotoToStorageFileAsync(ImageEncodingProperties.CreateJpeg(), photoStorageFile);
var stream = await photoStorageFile.OpenReadAsync();
// initialize with 1,1 to get the current size of the image
var writeableBmp = new WriteableBitmap(1, 1);
writeableBmp.SetSource(stream);
// and create it again because otherwise the WB isn't fully initialized and decoding
// results in a IndexOutOfRange
writeableBmp = new WriteableBitmap(writeableBmp.PixelWidth, writeableBmp.PixelHeight);
stream.Seek(0);
writeableBmp.SetSource(stream);
_result = ScanBitmap(writeableBmp);
if (_result != null)
{
if (!_barcodeFound)
{
Messenger.Default.Send(new NotificationMessage(_result, "ResultFoundMsg"));
_barcodeFound = true;
}
}
await photoStorageFile.DeleteAsync(StorageDeleteOption.PermanentDelete);
}
await _mediaCapture.StopPreviewAsync();
}
catch (Exception ex)
{
var s = "";
}
}
private async void OnLoadImage(IRandomAccessStream imageStream)
{
var image = new WriteableBitmap(1, 1);
image.SetSource(imageStream);
ComicImage.Source = image;
ComicImage.Width = 400;
ComicImage.Height = 300;
imageStream.Dispose();
}
public static async Task<WriteableBitmap> StorageFileToWriteableBitmap(StorageFile file)
{
if (file == null)
return null;
WriteableBitmap bmp;
using (IRandomAccessStream stream = await file.OpenAsync(FileAccessMode.Read))
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(stream);
bmp = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
bmp.SetSource(stream);
}
return bmp;
}
private async Task<Mat> LoadImage(String imageUri)
{
StorageFile file =
await Package.Current.InstalledLocation.GetFileAsync(imageUri);
using (IRandomAccessStream fileStream = await file.OpenAsync(FileAccessMode.Read))
{
BitmapImage bmpImage = new BitmapImage();
bmpImage.SetSource(fileStream);
WriteableBitmap bmp = new WriteableBitmap(bmpImage.PixelWidth, bmpImage.PixelHeight);
bmp.SetSource(await file.OpenAsync(FileAccessMode.Read));
Mat img = new Mat(bmp);
return img;
}
}
private async System.Threading.Tasks.Task DecodeStaticResource()
{
var file = await Windows.ApplicationModel.Package.Current.InstalledLocation.GetFileAsync(@"Assets\1.png");
var stream = await file.OpenReadAsync();
// initialize with 1,1 to get the current size of the image
var writeableBmp = new WriteableBitmap(1, 1);
writeableBmp.SetSource(stream);
// and create it again because otherwise the WB isn't fully initialized and decoding
// results in a IndexOutOfRange
writeableBmp = new WriteableBitmap(writeableBmp.PixelWidth, writeableBmp.PixelHeight);
stream.Seek(0);
writeableBmp.SetSource(stream);
var result = ScanBitmap(writeableBmp);
if (result != null)
{
ScanResult.Text += result.Text;
}
return;
}
async private void CameraCapture()
{
// Remember to set permissions in the manifest!
// using Windows.Media.Capture;
// using Windows.Storage;
// using Windows.UI.Xaml.Media.Imaging;
CameraCaptureUI cameraUI = new CameraCaptureUI();
cameraUI.PhotoSettings.AllowCropping = false;
cameraUI.PhotoSettings.MaxResolution = CameraCaptureUIMaxPhotoResolution.MediumXga;
Windows.Storage.StorageFile capturedMedia =
await cameraUI.CaptureFileAsync(CameraCaptureUIMode.Photo);
if (capturedMedia != null)
{
using (var streamCamera = await capturedMedia.OpenAsync(FileAccessMode.Read))
{
BitmapImage bitmapCamera = new BitmapImage();
bitmapCamera.SetSource(streamCamera);
// To display the image in a XAML image object, do this:
// myImage.Source = bitmapCamera;
// Convert the camera bitap to a WriteableBitmap object,
// which is often a more useful format.
int width = bitmapCamera.PixelWidth;
int height = bitmapCamera.PixelHeight;
WriteableBitmap wBitmap = new WriteableBitmap(width, height);
using (var stream = await capturedMedia.OpenAsync(FileAccessMode.Read))
{
wBitmap.SetSource(stream);
}
}
}
}
/// <summary>
/// Loads image from file to bitmap and displays it in UI.
/// </summary>
public async Task LoadImage(StorageFile file)
{
ImageProperties imgProp = await file.Properties.GetImagePropertiesAsync();
bool sourceSet = false;
using (var imgStream = await file.OpenAsync(FileAccessMode.Read))
{
bitmap = new WriteableBitmap((int)imgProp.Width, (int)imgProp.Height);
bitmap.SetSource(imgStream);
if (imgProp.Width > 2600 || imgProp.Height > 2600)
{
double scale = 1.0;
if (imgProp.Height > 2600)
scale = 2600.0 / imgProp.Height;
else if (imgProp.Width > 2600)
scale = Math.Min(scale, 2600.0 / imgProp.Width);
bitmap = bitmap.Resize((int)(imgProp.Width * scale), (int)(imgProp.Height * scale), WriteableBitmapExtensions.Interpolation.Bilinear);
}
}
ExtractText();
}
private async void openMyCamera()
{
CameraCaptureUI cameraUI = new CameraCaptureUI();
cameraUI.PhotoSettings.AllowCropping = false;
cameraUI.PhotoSettings.MaxResolution = CameraCaptureUIMaxPhotoResolution.MediumXga;
Windows.Storage.StorageFile capturedMedia =
await cameraUI.CaptureFileAsync(CameraCaptureUIMode.Photo);
if (capturedMedia != null)
{
using (var streamCamera = await capturedMedia.OpenAsync(FileAccessMode.Read))
{
bitmapCamera = new BitmapImage();
bitmapCamera.SetSource(streamCamera);
//To display the image in a XAML image object, do this:
imagePreivew.Source = bitmapCamera;
// Convert the camera bitap to a WriteableBitmap object,
// which is often a more useful format.
int width = bitmapCamera.PixelWidth;
int height = bitmapCamera.PixelHeight;
WriteableBitmap wBitmap = new WriteableBitmap(width, height);
using (var stream = await capturedMedia.OpenAsync(FileAccessMode.Read))
{
wBitmap.SetSource(stream);
}
SaveImageAsJpeg(wBitmap);
}
}
}
/// <summary>
/// liest eine Bilddatei und gibt das ensprechande Bitmap-Objekt zurück
/// </summary>
/// <param name="fileName">Name der Bilddateie, welche geladen werden soll</param>
/// <returns>fertig geladenes Bild</returns>
public static async Task<WriteableBitmap> ReadBitmapAsync(string fileName)
{
var data = await ReadAllBytesAsync(fileName);
var size = GetBildGröße(data);
var memStream = new MemoryStream();
await memStream.WriteAsync(data, 0, data.Length);
memStream.Position = 0;
var result = new WriteableBitmap(size.w, size.h);
result.SetSource(memStream.AsRandomAccessStream());
return result;
}
async void LoadImage(string fileName,string option)
{
// Open the file
StorageFile file = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx://" + fileName));
using (IRandomAccessStream fileStream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read))
{
// We have to load the file in a BitmapImage first, so we can check the width and height..
BitmapImage bmp = new BitmapImage();
bmp.SetSource(fileStream);
// Load the picture in a WriteableBitmap
WriteableBitmap writeableBitmap = new WriteableBitmap(bmp.PixelWidth, bmp.PixelHeight);
writeableBitmap.SetSource(await file.OpenAsync(Windows.Storage.FileAccessMode.Read));
// Now we have to extract the pixels from the writeablebitmap
// Get all pixel colors from the buffer
pixelColors = writeableBitmap.PixelBuffer.ToArray();
// passbyte = pixelColors;
bytesAsInts = conversion1.GetIntArrayFromByteArray(pixelColors);
// txtbox.Text += 0.5;
if (option == Convert.ToString(1))
{
if (check12)
{
resultbyte = passbyte;
check12 = false;
}
bool check122 = false;
if (resultbyte != null && check1)
{
bytesAsInts = conversion1.GetIntArrayFromByteArray(resultbyte);
check122 = true;
}
else
{
bytesAsInts = conversion1.GetIntArrayFromByteArray(pixelColors);
}
resultarray = bg.Process(bytesAsInts, bmp.PixelWidth, bmp.PixelHeight);
passbyte = conversion1.GetByteArrayFromIntArray(resultarray);
if (check122)
{
check1 = true;
}
else
{
check1 = false;
}
check2 = true;
check3 = true;
check22 = true;
check32 = true;
check4 = true;
check42 = true;
// Now we have to write back our pixel colors to the writeable bitmap..
}
else if (option == Convert.ToString(2))
{
bool check222 = false;
if (check22)
{
resultbyte = passbyte;
check22 = false;
}
if (resultbyte != null && check2)
{
Saturation st = new Saturation();
passbyte = st.satura(resultbyte, bmp.PixelWidth, bmp.PixelHeight, sature);
check222 = true;
}
else
{
Saturation st = new Saturation();
passbyte = st.satura(pixelColors, bmp.PixelWidth, bmp.PixelHeight, sature);
}
if (check222)
{
check2 = true;
}
else
{
check2 = false;
}
check12 = true;
check32 = true;
check3 = true;
check1 = true;
check4 = true;
check42 = true;
}
else if (option == Convert.ToString(3))
{
resultarray = Bitmap_Sharpen.sharpen(bytesAsInts, bmp.PixelWidth, bmp.PixelHeight, sharp);
passbyte = conversion1.GetByteArrayFromIntArray(resultarray);
resultbyte = passbyte;
}
else if (option == Convert.ToString(4))
{
bool check333 = false;
if (check32)
{
resultbyte = passbyte;
check32 = false;
}
if (resultbyte != null && check3)
{
Gamma gam = new Gamma();
passbyte = gam.GammaChange(resultbyte, bmp.PixelWidth, bmp.PixelHeight, gamma);
check333 = true;
}
else
{
check333 = false;
Gamma gam = new Gamma();
passbyte = gam.GammaChange(pixelColors, bmp.PixelWidth, bmp.PixelHeight, gamma);
}
if (check333)
{
check3 = true;
}
else
{
check3 = false;
}
check12 = true;
check22 = true;
check2 = true;
check1 = true;
check4 = true;
check42 = true;
}
else if (option == Convert.ToString(5))
{
//hue code
bool check444 = false;
if (check42)
{
resultbyte = passbyte;
check42 = false;
}
if (resultbyte != null && check4 == true)
{
writeableBitmap.PixelBuffer.AsStream().Write(passbyte, 0, passbyte.Length);
writeableBitmap = ChangeHue.ChangeHue1(writeableBitmap, amount);
check444 = true;
}
else
{
writeableBitmap = ChangeHue.ChangeHue1(writeableBitmap, amount);
}
resultbyte = writeableBitmap.PixelBuffer.ToArray();
passbyte = resultbyte;
if (check444)
{
check4 = true;
}
else
{
check4 = false;
}
check12 = true;
check22 = true;
check2 = true;
check1 = true;
check3 = true;
check32 = true;
}
writeableBitmap.PixelBuffer.AsStream().Write(passbyte, 0, passbyte.Length);
// Set the source of our image to the WriteableBitmap
img1.Source = writeableBitmap;
//img1.Source = wb;
// Tell the image it needs a redraw
writeableBitmap.Invalidate();
}
}
private async void DoImageProcessing()
{
var ps = new InMemoryRandomAccessStream();
while (processImage)
{
await capturePreview.Source.CapturePhotoToStreamAsync(ImageEncodingProperties.CreateJpeg(), ps);
await ps.FlushAsync();
ps.Seek(0);
WriteableBitmap bitmap = new WriteableBitmap(424, 240);
bitmap.SetSource(ps);
int bitmapSize = bitmap.PixelHeight * bitmap.PixelWidth * 4;
using (Stream imageStream = bitmap.PixelBuffer.AsStream())
{
byte[] bitmapPixelArray = new byte[bitmapSize];
await imageStream.ReadAsync(bitmapPixelArray, 0, bitmapSize);
for (int i = 0; i < bitmapSize; i += 4)
{
selectedPixelFunction(bitmapPixelArray, i);
}
imageStream.Seek(0, SeekOrigin.Begin);
await imageStream.WriteAsync(bitmapPixelArray, 0, bitmapSize);
}
imageProcess.Source = bitmap;
}
selectedPixelFunction = null;
}
/// <summary>
/// Invoked when the user clicks on the Sample button.
/// </summary>
//private async void Sample_Click(object sender, RoutedEventArgs e)
//{
// // Load sample "Hello World" image.
// var file = await Windows.ApplicationModel.Package.Current.InstalledLocation.GetFileAsync("sample\\sample.png");
// await LoadImage(file);
//}
/// <summary>
/// Loads image from file to bitmap and displays it in UI.
/// </summary>
private async Task LoadImage(StorageFile file)
{
ImageProperties imgProp = await file.Properties.GetImagePropertiesAsync();
using (var imgStream = await file.OpenAsync(FileAccessMode.Read))
{
bitmap = new WriteableBitmap((int)imgProp.Width, (int)imgProp.Height);
bitmap.SetSource(imgStream);
PreviewImage.Source = bitmap;
}
rootPage.NotifyUser(
String.Format("Eklenen Görüntü Dosyası: {0} ({1}x{2}).", file.Name, imgProp.Width, imgProp.Height),
NotifyType.StatusMessage);
ClearResults();
}
/// <summary>
/// Await loading an image from an external web site
/// </summary>
/// <param name="uri"></param>
public async Task<WriteableBitmap> LoadImageWriteableBitmapFromWeb(Uri uri)
{
// From Petzold, Programming Windows, 6th edition pg. 692-3
/* This simple method will return before the file read is complete. As expected, this is a problem:
RandomAccessStreamReference streamRef = RandomAccessStreamReference.CreateFromUri(uri);
IRandomAccessStreamWithContentType fileStream = await streamRef.OpenReadAsync();
WriteableBitmap wb = new WriteableBitmap(1, 1); // dummy values
wb.SetSource(fileStream);
return wb; */
try
{
RandomAccessStreamReference streamRef = RandomAccessStreamReference.CreateFromUri(uri);
// Create a buffer for reading the stream:
Windows.Storage.Streams.Buffer buffer = null;
// Read the entire file:
using (IRandomAccessStreamWithContentType fileStream = await streamRef.OpenReadAsync())
{
buffer = new Windows.Storage.Streams.Buffer((uint)fileStream.Size);
await fileStream.ReadAsync(buffer, (uint)fileStream.Size, InputStreamOptions.None);
}
WriteableBitmap wb = new WriteableBitmap(1, 1); // dummy values
// Create a memory stream for transferring the data
using (InMemoryRandomAccessStream memoryStream = new InMemoryRandomAccessStream())
{
await memoryStream.WriteAsync(buffer);
memoryStream.Seek(0);
// Use the memory stream as the Bitmap Source
wb.SetSource(memoryStream);
}
return wb;
}
catch(Exception)
{
return null; // new Dec 2014. Probably bad, dangling uri. Let caller report & handle error.
}
}
private async Task<string> FindQRCodeAsync()
{
_isStreaming = true;
RaisePropertyChanged(nameof(MediaCapture));
await _mediaCapture.StartPreviewAsync();
IsCameraInitialising = false;
ShowCameraPreview = true;
Result result = null;
while (result == null && _isStreaming)
{
var photoStorageFile = await ApplicationData.Current.TemporaryFolder.CreateFileAsync(DateTime.UtcNow.ToString("yyyMMddHHmmssff"), CreationCollisionOption.GenerateUniqueName);
await _mediaCapture.CapturePhotoToStorageFileAsync(ImageEncodingProperties.CreateJpeg(), photoStorageFile);
var stream = await photoStorageFile.OpenReadAsync();
var writableBmp = new WriteableBitmap(1, 1);
writableBmp.SetSource(stream);
writableBmp = new WriteableBitmap(writableBmp.PixelWidth, writableBmp.PixelHeight);
stream.Seek(0);
writableBmp.SetSource(stream);
var barcodeReader = new BarcodeReader
{
AutoRotate = true
};
barcodeReader.Options.TryHarder = true;
try
{
result = barcodeReader.Decode(writableBmp);
}
catch (IndexOutOfRangeException)
{
continue;
}
catch (UnauthorizedAccessException)
{
continue;
}
finally
{
await photoStorageFile.DeleteAsync(StorageDeleteOption.PermanentDelete);
}
}
if (result != null)
{
return result.Text;
}
else
{
return "";
}
}
/// <summary>
/// 图片处理 获取中间代码区域部分
/// </summary>
private async void PhotoHandle()
{
var focusSettings = new FocusSettings
{
Mode = FocusMode.Auto,
AutoFocusRange = AutoFocusRange.Macro,
Distance = ManualFocusDistance.Nearest
};
Result _result = null;
try
{
while (_result == null && _cancel != true)
{
//对焦
var autoFocusSupported = _mediaCapture.VideoDeviceController.FocusControl.SupportedFocusModes.Contains(FocusMode.Auto);
if (autoFocusSupported)
{
_mediaCapture.VideoDeviceController.FocusControl.Configure(focusSettings);
await _mediaCapture.VideoDeviceController.FocusControl.FocusAsync().AsTask();
}
var photoStorageFile = await KnownFolders.PicturesLibrary.CreateFileAsync("scan.jpg", CreationCollisionOption.ReplaceExisting);
await _mediaCapture.CapturePhotoToStorageFileAsync(ImageEncodingProperties.CreateJpeg(), photoStorageFile);
var stream = await photoStorageFile.OpenReadAsync();
//stream.Seek(0);
//await _mediaCapture.CapturePhotoToStreamAsync(ImageEncodingProperties.CreatePng(), stream);
// initialize with 1,1 to get the current size of the image
var writeableBmp = new WriteableBitmap(1, 1);
writeableBmp.SetSource(stream);
// and create it again because otherwise the WB isn't fully initialized and decoding
// results in a IndexOutOfRange
writeableBmp = new WriteableBitmap(writeableBmp.PixelWidth, writeableBmp.PixelHeight);
stream.Seek(0);
writeableBmp.SetSource(stream);
_result =await ScanQRCodeAsync(writeableBmp);
await photoStorageFile.DeleteAsync(StorageDeleteOption.PermanentDelete);
//如果识别成功
if (null != _result)
{
// await new MessageDialog(res.Text).ShowAsync();
await StopPreviewAsync();
tip.Stop();
string result = _result.Text;
if (IsInteger(result))
{
string[] info = new string[2];
info[0] = "Barcode";
info[1] = result;
SuppressNavigationTransitionInfo n = new SuppressNavigationTransitionInfo();
((Frame)Window.Current.Content).Navigate(typeof(SearchPage_M), info, n);
//获取导航然后清理上一个
var a = ((Frame)Window.Current.Content).BackStack;
a.RemoveAt(a.Count - 1);
}
//如果为网页链接，跳转到网页中
else
{
((Frame)Window.Current.Content).Navigate(typeof(WebView_M), result);
//获取导航然后清理上一个
var a = ((Frame)Window.Current.Content).BackStack;
a.RemoveAt(a.Count - 1);
}
break;
}
}
}
catch
{
//await new MessageDialog("相机出现问题，请退出该页面重新初始化相机").ShowAsync();
return;
}
//var file = await Windows.ApplicationModel.Package.Current.InstalledLocation.GetFileAsync(@"Assets\1.png");
//var stream = await file.OpenReadAsync();
//// initialize with 1,1 to get the current size of the image
//var writeableBmp = new WriteableBitmap(1, 1);
//writeableBmp.SetSource(stream);
//// and create it again because otherwise the WB isn't fully initialized and decoding
//// results in a IndexOutOfRange
//writeableBmp = new WriteableBitmap(writeableBmp.PixelWidth, writeableBmp.PixelHeight);
//stream.Seek(0);
//writeableBmp.SetSource(stream);
//var result = ScanQRCode(writeableBmp);
//if (result != null)
//{
// await new MessageDialog(result.Text).ShowAsync();
//}
//return;
#region MyRegion
//while (true)
//{
// if (_isInitialized && _isPreviewing)
// {
// //对焦
// var autoFocusSupported = _mediaCapture.VideoDeviceController.FocusControl.SupportedFocusModes.Contains(FocusMode.Auto);
// if (autoFocusSupported)
// {
// var focusSettings = new FocusSettings
// {
// Mode = FocusMode.Auto,
// AutoFocusRange = AutoFocusRange.Macro,
// Distance = ManualFocusDistance.Nearest
// };
// _mediaCapture.VideoDeviceController.FocusControl.Configure(focusSettings);
// await _mediaCapture.VideoDeviceController.FocusControl.FocusAsync().AsTask();
// }
// //拍照
// //获取照片方向
// var photoOrientation = ConvertOrientationToPhotoOrientation(GetCameraOrientation());
// //设置照片流
// var file = await KnownFolders.PicturesLibrary.CreateFileAsync("SimplePhoto.jpg", CreationCollisionOption.GenerateUniqueName);
// using (var stream = new InMemoryRandomAccessStream())
// {
// await _mediaCapture.CapturePhotoToStreamAsync(ImageEncodingProperties.CreateJpeg(), stream);
// var decoder = await BitmapDecoder.CreateAsync(stream);
// using (var outputStream = await file.OpenAsync(FileAccessMode.ReadWrite))
// {
// var encoder = await BitmapEncoder.CreateForTranscodingAsync(outputStream, decoder);
// var properties = new BitmapPropertySet { { "System.Photo.Orientation", new BitmapTypedValue(photoOrientation, PropertyType.UInt16) } };
// await encoder.BitmapProperties.SetPropertiesAsync(properties);
// await encoder.FlushAsync();
// }
// }
// using (var streamResult = await file.OpenAsync(FileAccessMode.Read))
// {
// var writeableBmp = new WriteableBitmap(1, 1);
// writeableBmp.SetSource(streamResult);
// writeableBmp = new WriteableBitmap(writeableBmp.PixelWidth, writeableBmp.PixelHeight);
// streamResult.Seek(0);
// writeableBmp.SetSource(streamResult);
// await file.DeleteAsync(StorageDeleteOption.PermanentDelete);
// image.Source = writeableBmp;
// }
// ////截图获取图片
// var s = clipImage.TransformToVisual(root);
// Point p = s.TransformPoint(new Point(0, 0));
// RectangleGeometry rect = new RectangleGeometry();
// rect.Rect = new Rect(p.X, p.Y, 300, 300);
// image.Clip = rect;
// await Task.Delay(TimeSpan.FromSeconds(0.1));
// RenderTargetBitmap ss = new RenderTargetBitmap();
// await ss.RenderAsync(clip);
// //让显示图片区域为空
// image.Source = null;
// var writeBmp = await ClipPhotoHandleAsync(ss);
// // i.Source = writeBmp;
// var res = ScanQRCode(writeBmp);
// //如果识别成功
// if (null != res)
// {
// // await new MessageDialog(res.Text).ShowAsync();
// await StopPreviewAsync();
// tip.Stop();
// string result = res.Text;
// if (IsInteger(result))
// {
// string[] info = new string[2];
// info[0] = "Barcode";
// info[1] = result;
// SuppressNavigationTransitionInfo n = new SuppressNavigationTransitionInfo();
// ((Frame)Window.Current.Content).Navigate(typeof(SearchPage_M), info, n);
// //获取导航然后清理上一个
// var a = ((Frame)Window.Current.Content).BackStack;
// a.RemoveAt(a.Count - 1);
// }
// //如果为网页链接，跳转到网页中
// else
// {
// ((Frame)Window.Current.Content).Navigate(typeof(WebView_M), result);
// //获取导航然后清理上一个
// var a = ((Frame)Window.Current.Content).BackStack;
// a.RemoveAt(a.Count - 1);
// }
// break;
// }
// }
// else
// {
// return;
// }
//}
#endregion
}
public static async void ImagetoIsolatedStorageSaver(IRandomAccessStreamWithContentType stream, string filename)
{
try
{
//WriteableBitmap is used to save our image to our desired location, which in this case is the LocalStorage of app
var image = new WriteableBitmap(50, 50);
image.SetSource(stream);
//Saving to roaming folder so that it can sync the profile pic to other devices
var saveAsTarget =
await
ApplicationData.Current.RoamingFolder.CreateFileAsync(filename,
CreationCollisionOption.ReplaceExisting);
//Encoding with Bitmap Encoder to jpeg format
var encoder = await BitmapEncoder.CreateAsync(
BitmapEncoder.JpegEncoderId,
await saveAsTarget.OpenAsync(FileAccessMode.ReadWrite));
//Saving as a stream
var pixelStream = image.PixelBuffer.AsStream();
var pixels = new byte[pixelStream.Length];
await pixelStream.ReadAsync(pixels, 0, pixels.Length);
encoder.SetPixelData(BitmapPixelFormat.Bgra8, BitmapAlphaMode.Ignore, (uint) image.PixelWidth,
(uint) image.PixelHeight, 96.0, 96.0, pixels);
await encoder.FlushAsync();
await pixelStream.FlushAsync();
pixelStream.Dispose();
}
catch (Exception e)
{
Debug.Write(e);
}
}
private async void SelectImageButton_Click(object sender, RoutedEventArgs e)
{
await _photoCaptureManager.StopPreviewAsync();
var openPicker = new Windows.Storage.Pickers.FileOpenPicker
{
SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.PicturesLibrary,
ViewMode = Windows.Storage.Pickers.PickerViewMode.Thumbnail
};
// Filter to include a sample subset of file types
openPicker.FileTypeFilter.Clear();
foreach (string postfix in _supportedImageFilePostfixes)
{
openPicker.FileTypeFilter.Add(postfix);
}
// Open the file picker
Windows.Storage.StorageFile file = await openPicker.PickSingleFileAsync();
// File is null if user cancels the file picker
if (file != null)
{
var fileStream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
// Reset the streams
_dataContext.ResetStreams();
var image = new BitmapImage();
image.SetSource(fileStream);
int width = image.PixelWidth;
int height = image.PixelHeight;
var bitmap = new WriteableBitmap(width, height);
_dataContext.SetFullResolution(width, height);
int previewWidth = (int)FilterEffects.DataContext.DefaultPreviewResolutionWidth;
int previewHeight = 0;
AppUtils.CalculatePreviewResolution(width, height, ref previewWidth, ref previewHeight);
_dataContext.SetPreviewResolution(previewWidth, previewHeight);
bool success = false;
try
{
// Jpeg images can be used as such.
Stream stream = fileStream.AsStream();
stream.Position = 0;
stream.CopyTo(_dataContext.FullResolutionStream);
success = true;
}
catch (Exception ex)
{
Debug.WriteLine(DebugTag
+ "Cannot use stream as such (not probably jpeg): " + ex.Message);
}
if (!success)
{
// TODO: Test this part! It may not work.
//
// Image format is not jpeg. Can be anything, so first
// load it into a bitmap image and then write as jpeg.
bitmap.SetSource(fileStream);
var inStream = (IRandomAccessStream)_dataContext.FullResolutionStream.AsInputStream();
BitmapEncoder encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.JpegEncoderId, inStream);
Stream outStream = bitmap.PixelBuffer.AsStream();
var pixels = new byte[outStream.Length];
await outStream.ReadAsync(pixels, 0, pixels.Length);
encoder.SetPixelData(BitmapPixelFormat.Bgra8, BitmapAlphaMode.Ignore, (uint)width, (uint)height, 96.0, 96.0, pixels);
await encoder.FlushAsync();
}
await AppUtils.ScaleImageStreamAsync(
_dataContext.FullResolutionStream,
_dataContext.FullResolution,
_dataContext.PreviewResolutionStream,
_dataContext.PreviewResolution);
_dataContext.WasCaptured = false;
Frame.Navigate(typeof(PreviewPage));
} // if (file != null)
}
private async Task<WriteableBitmap> ClipPhotoHandleAsync(RenderTargetBitmap renderTargetBitmap)
{
IBuffer buffer = await renderTargetBitmap.GetPixelsAsync();
//创建程序文件存储
var appData = ApplicationData.Current.LocalFolder;
IStorageFile saveFile = await appData.CreateFileAsync("QRCode.png", CreationCollisionOption.ReplaceExisting);
//把图片存进去
using (var fileStream = await saveFile.OpenAsync(FileAccessMode.ReadWrite))
{
var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, fileStream);
encoder.SetPixelData(
BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Ignore,
(uint)renderTargetBitmap.PixelWidth,
(uint)renderTargetBitmap.PixelHeight,
DisplayInformation.GetForCurrentView().LogicalDpi,
DisplayInformation.GetForCurrentView().LogicalDpi,
buffer.ToArray());
await encoder.FlushAsync();
}
var writeableBmp = new WriteableBitmap(1, 1);
using (var streamResult = await saveFile.OpenAsync(FileAccessMode.Read))
{
writeableBmp.SetSource(streamResult);
writeableBmp = new WriteableBitmap(writeableBmp.PixelWidth, writeableBmp.PixelHeight);
streamResult.Seek(0);
writeableBmp.SetSource(streamResult);
await saveFile.DeleteAsync(StorageDeleteOption.PermanentDelete);
}
return writeableBmp;
}
protected async override void OnLaunched(LaunchActivatedEventArgs e)
{
List<MyLine> listLines = new List<MyLine>();
//int minSize = 40;
//int maxSize = 2600;
int wordTopRange = 25;
StorageFolder folder = Windows.Storage.ApplicationData.Current.LocalFolder;
StorageFile file = null;
if (!string.IsNullOrEmpty(e.Arguments))
{
try
{
OcrEngine ocrEngine = new OcrEngine(OcrLanguage.English);
file = await folder.GetFileAsync(e.Arguments);
ImageProperties imgProp = await file.Properties.GetImagePropertiesAsync();
//if (imgProp.Height < minSize || imgProp.Height > maxSize || imgProp.Width < minSize || imgProp.Width > maxSize)
//{
// await WriteToFile(folder, file.Name + ".txt", "Image size must be > 40 and < 2600 pixel");
//}
//else
//{
WriteableBitmap bitmap = null;
using (IRandomAccessStream imgStream = await file.OpenAsync(FileAccessMode.Read))
{
bitmap = new WriteableBitmap((int)imgProp.Width, (int)imgProp.Height);
bitmap.SetSource(imgStream);
}
// This main API call to extract text from image.
OcrResult ocrResult = await ocrEngine.RecognizeAsync((uint)bitmap.PixelHeight, (uint)bitmap.PixelWidth, bitmap.PixelBuffer.ToArray());
// If there is text.
if (ocrResult.Lines != null)
{
StringBuilder builder = new StringBuilder();
// loop over recognized text.
foreach (OcrLine line in ocrResult.Lines)
{
// Iterate over words in line.
foreach (OcrWord word in line.Words)
{
// sort the word line by line
bool isBelongToLine = false;
foreach (MyLine myLine in listLines)
{
// if line exist, add word to line
if (Between(myLine.lineNumber, word.Top - wordTopRange, word.Top + wordTopRange, true))
{
myLine.listWords.Add(word);
isBelongToLine = true;
break;
}
}
// if line does not exist, create new line, add word to line
if (isBelongToLine == false)
{
MyLine myLine = new MyLine();
myLine.lineNumber = word.Top;
myLine.listWords.Add(word);
listLines.Add(myLine);
}
// sort the word line by line
}
}
// sort the lines base on top position
listLines.Sort();
// return data line by line
foreach (MyLine myLine in listLines)
{
builder.Append(myLine.ToString());
}
await WriteToFile(folder, file.Name + ".txt", builder.ToString());
}
else // if no text
{
await WriteToFile(folder, file.Name + ".txt", "No Text");
}
//}
}
catch (Exception ex)
{
await WriteToFile(folder, file.Name + ".txt", "Exception");
}
App.Current.Exit();
}
}
