private async void ChooseExecute()
{
CanChoose = false;
try
{
var chooser = new PhotoChooserTask {
ShowCamera = true
};
var first = await chooser.ShowAsync();
if (first.ChosenPhoto == null)
{
var prompt = new ToastPrompt {
Message = "Gotta choose something man..."
};
prompt.Show();
return;
}
var second = await chooser.ShowAsync();
if (second.ChosenPhoto == null)
{
var prompt = new ToastPrompt {
Message = "Also choose second one..."
};
prompt.Show();
return;
}
var bi1 = new BitmapImage();
bi1.SetSource(first.ChosenPhoto);
var bi2 = new BitmapImage();
bi2.SetSource(second.ChosenPhoto);
WriteableBitmap wb1;
WriteableBitmap wb2;
if (bi2.PixelHeight != bi1.PixelHeight || bi2.PixelWidth != bi1.PixelWidth)
{
// sorry for bad croping
var toast = new ToastPrompt {
Message = "images are not of the same size, lame cropping incoming :/"
};
toast.Show();
EditingSession session1 = null, session2 = null;
using (var stream1 = bi1.ToStream())
using (var stream2 = bi2.ToStream())
try
{
var task1 = EditingSessionFactory.CreateEditingSessionAsync(stream1);
var task2 = EditingSessionFactory.CreateEditingSessionAsync(stream2);
var sessions = await Task.WhenAll(task1, task2);
session1 = task1.Result;
session2 = task2.Result;
var cropRect = new Windows.Foundation.Rect(0, 0,
Math.Min(bi1.PixelWidth, bi2.PixelWidth),
Math.Min(bi1.PixelHeight, bi2.PixelHeight));
sessions[0].AddFilter(FilterFactory.CreateCropFilter(cropRect));
sessions[1].AddFilter(FilterFactory.CreateCropFilter(cropRect));
wb1 = new WriteableBitmap((int)cropRect.Width, (int)cropRect.Height);
wb2 = new WriteableBitmap((int)cropRect.Width, (int)cropRect.Height);
await Task.WhenAll(
sessions[0].RenderToWriteableBitmapAsync(wb1),
sessions[1].RenderToWriteableBitmapAsync(wb2)
);
}
finally
{
Helpers.SafeDispose(ref session1);
Helpers.SafeDispose(ref session2);
}
}
else
{
wb1 = new WriteableBitmap(bi1);
wb2 = new WriteableBitmap(bi2);
}
// save images
using (var isoStore = IsolatedStorageFile.GetUserStoreForApplication())
using (IsolatedStorageFileStream fileStream1 = isoStore.CreateFile(FirstFileName),
fileStream2 = isoStore.CreateFile(SecondFileName))
{
wb1.SaveJpeg(fileStream1, wb1.PixelWidth, wb1.PixelHeight, 0, 100);
wb2.SaveJpeg(fileStream2, wb2.PixelWidth, wb2.PixelHeight, 0, 100);
}
FirstImage = wb1;
SecondImage = wb2;
ApplyExecute();
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
}
finally
{
CanChoose = true;
}
}