private async System.Threading.Tasks.Task LoadSampleImage(string fileName)
{
var sampleUri = new Uri("ms-appx:///Sample/" + fileName);
var file = await Windows.Storage.StorageFile.GetFileFromApplicationUriAsync(sampleUri);
_bitmap = await LoadImageAsync(file);
this.SampleImage.Source = _bitmap;
}
// Unity3D
#endif
#if NETFX_CORE
public Windows.UI.Xaml.Media.Imaging.WriteableBitmap ToBitmap()
{
var bmp = new Windows.UI.Xaml.Media.Imaging.WriteableBitmap(Width, Height);
using (var stream = System.Runtime.InteropServices.WindowsRuntime.WindowsRuntimeBufferExtensions.AsStream(bmp.PixelBuffer))
{
stream.Write(Pixels, 0, Pixels.Length);
}
bmp.Invalidate();
return bmp;
}
// Unity3D
#endif
#if NETFX_CORE
public Windows.UI.Xaml.Media.Imaging.WriteableBitmap ToBitmap()
{
var bmp = new Windows.UI.Xaml.Media.Imaging.WriteableBitmap(Width, Height);
using (var stream = System.Runtime.InteropServices.WindowsRuntime.WindowsRuntimeBufferExtensions.AsStream(bmp.PixelBuffer))
{
stream.Write(Pixels, 0, Pixels.Length);
}
bmp.Invalidate();
return(bmp);
}
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 static async Task <BandIcon> LoadIcon(string uri)
{
StorageFile imageFile = await StorageFile.GetFileFromApplicationUriAsync(new Uri(uri));
using (IRandomAccessStream fileStream = await imageFile.OpenAsync(FileAccessMode.Read))
{
Windows.UI.Xaml.Media.Imaging.WriteableBitmap bitmap = new Windows.UI.Xaml.Media.Imaging.WriteableBitmap(1, 1);
await bitmap.SetSourceAsync(fileStream);
return(bitmap.ToBandIcon());
}
}
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();
Windows.UI.Xaml.Media.Imaging.BitmapImage bitmap = new Windows.UI.Xaml.Media.Imaging.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();
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 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();
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 Task <Windows.UI.Xaml.Media.Imaging.WriteableBitmap> DoCaptureWebView()
{
RingContentVisibility = true;
InMemoryRandomAccessStream ms = new InMemoryRandomAccessStream();
await _webview.CapturePreviewToStreamAsync(ms);
int screenHeight = (int)_webview.ActualHeight;
int screenWidth = (int)_webview.ActualWidth;
Windows.UI.Xaml.Media.Imaging.WriteableBitmap wb = await HeatMapFunctions.Resize(screenWidth, screenHeight, ms);
RingContentVisibility = false;
return(wb);
}
/// <summary>
/// Load up an icon (png) file and convert it to an actual BandIcon object to be used with creating a new tile.
/// </summary>
/// <param name="url"> Url to the icon</param>
/// <returns></returns>
private async Task <BandIcon> LoadIcon(string url)
{
//Get the Image file from disk.
Windows.Storage.StorageFile iconFile = await Windows.Storage.StorageFile.GetFileFromApplicationUriAsync(new Uri(url));
//Open up the file for random access (but stay with read>)
using (Windows.Storage.Streams.IRandomAccessStream fileStream = await iconFile.OpenAsync(Windows.Storage.FileAccessMode.Read))
{
//Create a new bitmap
Windows.UI.Xaml.Media.Imaging.WriteableBitmap iconWriteableBitmap = new Windows.UI.Xaml.Media.Imaging.WriteableBitmap(1, 1);
//Process the picture to useable bitmap.
await iconWriteableBitmap.SetSourceAsync(fileStream);
//Extension method is written to convert a bitmap to an BandIcon that we can use with the Band
return(iconWriteableBitmap.ToBandIcon());
}
}
public QRkodVM(NavigationService _navigationService, object _arg)
{
var barcodeWriter = new BarcodeWriter
{
Format = ZXing.BarcodeFormat.QR_CODE,
Options = new ZXing.Common.EncodingOptions
{
Width = 300,
Height = 300,
Margin = 30
}
};
string nesto = DateTime.Now.ToString("h:mm:ss tt");
var image = barcodeWriter.Write("Dzenitajfkjajflakglfkljkklgkdslg");
slikica = barcodeWriter.Write("Dzenita");
// var image = barcodeWriter.Write((string)_arg);
//slikica =barcodeWriter.Write((string)_arg);
}
ExtractTextAsync(Windows.UI.Xaml.Media.Imaging.WriteableBitmap bitmap,
WindowsPreview.Media.Ocr.OcrLanguage language)
{
// OcrEngineオブジェクトを生成する
var ocrEngine = new WindowsPreview.Media.Ocr.OcrEngine(language);
// OcrEngineに画像を渡して、文字列を認識させる
var ocrResult = await ocrEngine.RecognizeAsync(
(uint)bitmap.PixelHeight, // 画像の高さ
(uint)bitmap.PixelWidth, // 画像の幅
bitmap.PixelBuffer.ToArray() // 画像のデータ（バイト配列）
);
if (ocrResult.Lines == null || ocrResult.Lines.Count == 0)
{
this.ReadText.Text = "(何も読み取れませんでした)";
return;
}
// Word間の区切り（日本語では無し、英語ではスペースとする）
var separater = string.Empty;
if (language == WindowsPreview.Media.Ocr.OcrLanguage.English)
{
separater = " ";
}
// 結果を表示するテキストボックスをクリアする
this.ReadText.Text = string.Empty;
// 行番号（0始まり）を定義
int lineIndex = 0;
// 認識結果を行ごとに処理する
foreach (var line in ocrResult.Lines)
{
// 1行分の文字列を格納するためのバッファ
var sb = new System.Text.StringBuilder();
// 認識結果の行を、Wordごとに処理する
foreach (var word in line.Words)
{
// 認識した文字列をバッファに追加していく
sb.Append(word.Text);
sb.Append(separater);
// word は OcrWord 型。Textプロパティ(string型)の他に、
// その文字列を読み取った場所を表すLeft／Top／Widht／Heightプロパティ(int型)も持っている。
// なお、OcrWord という名前だが、日本語では1文字になる。
}
// ここでは、読み取った1行を以下のフォーマットで表示することにした
this.ReadText.Text += string.Format("[{0}{1}] {2}{3}",
(lineIndex++).ToString(), // 行番号(0始まり)
line.IsVertical ? "V" : "H", // 縦書き／横書きの区別
sb.ToString().TrimEnd(), // 読み取った文字列
Environment.NewLine // 改行
);
}
// 他に ocrResult.TextAngle (読み取った文字列群の、水平(または垂直)からの回転角度) も取得できる。
// OcrWord 型の示す場所は、この TextAngle の分だけ回転している。
}