async System.Threading.Tasks.Task<int> CaptureAndSave(UIElement element, Image img)
{
if (element.Visibility != Windows.UI.Xaml.Visibility.Visible) return 0;
// capture
var bitmap = new Windows.UI.Xaml.Media.Imaging.RenderTargetBitmap();
await bitmap.RenderAsync(element);
double x, y, w, h;
w = AreaRectangle.Width;
h = AreaRectangle.Height;
if (Double.IsNaN(w) || Double.IsNaN(h)) return 0;
x = Canvas.GetLeft(AreaRectangle);
y = Canvas.GetTop(AreaRectangle);
//Check& correct for min sizes
if (w < MIN_OCR_SIZE)
{
double ww;
ww = MaskRectangle.Width;
if (ww - x < MIN_OCR_SIZE)
{
x = ww - MIN_OCR_SIZE;
}
w = 40;
}
if (w < MIN_OCR_SIZE)
{
double hh;
hh = MaskRectangle.Height;
if (hh - y < MIN_OCR_SIZE)
{
y = hh - MIN_OCR_SIZE;
}
h = 40;
}
IBuffer buff = await bitmap.GetPixelsAsync();
InMemoryRandomAccessStream memw = new InMemoryRandomAccessStream();
var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.JpegEncoderId, memw);
byte[] bytes = buff.ToArray();
var dpi = Windows.Graphics.Display.DisplayInformation.GetForCurrentView().LogicalDpi;
//TODODEBUG
//new MessageDialog(String.Format("Rectangle: {0},{1} - {2}, {3}", x, y, w, h) +"\n"+
// String.Format("Params: {0} - {1}, {2}", dpi, bitmap.PixelWidth, bitmap.PixelHeight) + "\n" +
// String.Format("WebView: {0},{1} - {2}, {3}", Canvas.GetLeft(wbMain), Canvas.GetTop(wbMain), wbMain.ActualWidth, wbMain.ActualHeight) + "\n" +
// String.Format("Area: {0},{1} - {2}, {3}", Canvas.GetLeft(AreaRectangle), Canvas.GetTop(AreaRectangle), AreaRectangle.ActualWidth, AreaRectangle.ActualHeight)
// ).ShowAsync();
encoder.SetPixelData(BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Ignore,
(uint)bitmap.PixelWidth, (uint)bitmap.PixelHeight,
dpi, dpi, bytes);
await encoder.FlushAsync();
IRandomAccessStream sss = memw;
BitmapEncoder coder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, sss);
//Fixfor win9=10 (it's drowing with some scaling)
double kx = 1, ky = 1;
kx = bitmap.PixelWidth / wbMain.ActualWidth;
ky = bitmap.PixelHeight / wbMain.ActualHeight;
x = x * kx;
y = y * ky;
w = w * kx;
h = h * ky;
BitmapDecoder dec = null;
try
{
dec = await BitmapDecoder.CreateAsync(sss);
}
catch (Exception ex)
{
}
croppedBitmap = await CropBitmap.GetCroppedBitmapAsync(dec, new Point(x, y), new Size(w, h), 1);
img.Source = croppedBitmap;
return 0;
}
async System.Threading.Tasks.Task <int> CaptureAndSave(UIElement element, Image img)
{
if (element.Visibility != Windows.UI.Xaml.Visibility.Visible)
{
return(0);
}
// capture
var bitmap = new Windows.UI.Xaml.Media.Imaging.RenderTargetBitmap();
await bitmap.RenderAsync(element);
double x, y, w, h;
w = AreaRectangle.Width;
h = AreaRectangle.Height;
if (Double.IsNaN(w) || Double.IsNaN(h))
{
return(0);
}
x = Canvas.GetLeft(AreaRectangle);
y = Canvas.GetTop(AreaRectangle);
//Check& correct for min sizes
if (w < MIN_OCR_SIZE)
{
double ww;
ww = MaskRectangle.Width;
if (ww - x < MIN_OCR_SIZE)
{
x = ww - MIN_OCR_SIZE;
}
w = 40;
}
if (w < MIN_OCR_SIZE)
{
double hh;
hh = MaskRectangle.Height;
if (hh - y < MIN_OCR_SIZE)
{
y = hh - MIN_OCR_SIZE;
}
h = 40;
}
IBuffer buff = await bitmap.GetPixelsAsync();
InMemoryRandomAccessStream memw = new InMemoryRandomAccessStream();
var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.JpegEncoderId, memw);
byte[] bytes = buff.ToArray();
var dpi = Windows.Graphics.Display.DisplayInformation.GetForCurrentView().LogicalDpi;
//TODODEBUG
//new MessageDialog(String.Format("Rectangle: {0},{1} - {2}, {3}", x, y, w, h) +"\n"+
// String.Format("Params: {0} - {1}, {2}", dpi, bitmap.PixelWidth, bitmap.PixelHeight) + "\n" +
// String.Format("WebView: {0},{1} - {2}, {3}", Canvas.GetLeft(wbMain), Canvas.GetTop(wbMain), wbMain.ActualWidth, wbMain.ActualHeight) + "\n" +
// String.Format("Area: {0},{1} - {2}, {3}", Canvas.GetLeft(AreaRectangle), Canvas.GetTop(AreaRectangle), AreaRectangle.ActualWidth, AreaRectangle.ActualHeight)
// ).ShowAsync();
encoder.SetPixelData(BitmapPixelFormat.Bgra8,
BitmapAlphaMode.Ignore,
(uint)bitmap.PixelWidth, (uint)bitmap.PixelHeight,
dpi, dpi, bytes);
await encoder.FlushAsync();
IRandomAccessStream sss = memw;
BitmapEncoder coder = await BitmapEncoder.CreateAsync(BitmapEncoder.PngEncoderId, sss);
//Fixfor win9=10 (it's drowing with some scaling)
double kx = 1, ky = 1;
kx = bitmap.PixelWidth / wbMain.ActualWidth;
ky = bitmap.PixelHeight / wbMain.ActualHeight;
x = x * kx;
y = y * ky;
w = w * kx;
h = h * ky;
BitmapDecoder dec = null;
try
{
dec = await BitmapDecoder.CreateAsync(sss);
}
catch (Exception ex)
{
}
croppedBitmap = await CropBitmap.GetCroppedBitmapAsync(dec, new Point(x, y), new Size(w, h), 1);
img.Source = croppedBitmap;
return(0);
}