/// <summary>
/// Captures a photo. Photo data is stored to ImageStream, and
/// application is navigated to the preview page after capturing.
/// </summary>
private async Task Capture()
{
bool goToPreview = false;
MemoryStream photoStream = new MemoryStream();
MemoryStream thumbnailStream = new MemoryStream();
if (!_capturing)
{
_capturing = true;
CameraCaptureSequence sequence = _photoCaptureDevice.CreateCaptureSequence(1);
sequence.Frames[0].CaptureStream = photoStream.AsOutputStream();
sequence.Frames[0].ThumbnailStream = thumbnailStream.AsOutputStream();
await _photoCaptureDevice.PrepareCaptureSequenceAsync(sequence);
await sequence.StartCaptureAsync();
_capturing = false;
goToPreview = true;
}
_photoCaptureDevice.SetProperty(
KnownCameraPhotoProperties.LockedAutoFocusParameters,
AutoFocusParameters.None);
if (goToPreview)
{
NokiaImaginHelper.PreparePhoto(photoStream, thumbnailStream);
NavigationService.Navigate(new Uri(String.Format("/FilterPreviewPage.xaml?index={0}&shouldCrop={1}", _dateIndex, _sizeMode), UriKind.Relative));
}
}
void photoTask_Completed(object sender, PhotoResult e)
{
if (e.TaskResult == TaskResult.OK && e.Error == null)
{
var photoStream = new MemoryStream();
var thumbnailStream = new MemoryStream();
var library = new MediaLibrary();
var dateTaken = DateTime.Now;
bool found = false;
foreach (var pic in library.Pictures)
{
if (e.OriginalFileName.Equals(MediaLibraryExtensions.GetPath(pic)))
{
pic.GetImage().CopyTo(photoStream);
photoStream.Seek(0, SeekOrigin.Begin);
pic.GetPreviewImage().CopyTo(thumbnailStream);
thumbnailStream.Seek(0, SeekOrigin.Begin);
dateTaken = pic.Date;
NokiaImaginHelper.PreparePhoto(photoStream, thumbnailStream);
found = true;
break;
}
}
if (found)
{
NavigationService.Navigate(new Uri(String.Format("/FilterPreviewPage.xaml?dateTaken={0}&shouldCrop={1}", dateTaken.Ticks, Constant.NORMAL_MODE), UriKind.Relative));
}
}
}
