private void _btnStart_Click(object sender, EventArgs e)
{
_btnStart.Enabled = false;
_btnBrowse.Enabled = false;
_prgProgress.Style = ProgressBarStyle.Marquee;
_currentHistogram = null;
_pnlHistogram.Refresh();
_mapReduceJob = new MapReduceJob<byte[], Histogram>(
Setup.Container.Resolve<IBlobStorageProvider>(),
Setup.Container.Resolve<IQueueStorageProvider>());
// Do this asynchronously because it requires a few seconds
ThreadPool.QueueUserWorkItem(new WaitCallback((s) =>
{
using(var input = (Bitmap)Bitmap.FromFile(_currentFileName))
{
var slices = Helpers.SliceBitmapAsPng(input, 14);
// Queue slices
_mapReduceJob.PushItems(new HistogramMapReduceFunctions(), slices, 4);
//_currentHistogram = Helpers.ComputeHistogram(input);
//_pnlHistogram.Refresh();
}
BeginInvoke(new Action(() => _timer.Start()));
}));
}
private void _btnStart_Click(object sender, EventArgs e)
{
_btnStart.Enabled = false;
_btnBrowse.Enabled = false;
_prgProgress.Style = ProgressBarStyle.Marquee;
_currentHistogram = null;
_pnlHistogram.Refresh();
var storage = CloudStorage
.ForAzureConnectionString(Properties.Settings.Default.DataConnectionString)
.BuildStorageProviders();
_mapReduceJob = new MapReduceJob<byte[], Histogram>(storage.BlobStorage, storage.QueueStorage);
// Do this asynchronously because it requires a few seconds
ThreadPool.QueueUserWorkItem(s =>
{
using(var input = (Bitmap)Bitmap.FromFile(_currentFileName))
{
var slices = Helpers.SliceBitmapAsPng(input, 14);
// Queue slices
_mapReduceJob.PushItems(new HistogramMapReduceFunctions(), slices, 4);
//_currentHistogram = Helpers.ComputeHistogram(input);
//_pnlHistogram.Refresh();
}
BeginInvoke(new Action(() => _timer.Start()));
});
}
private void _btnBrowse_Click(object sender, EventArgs e)
{
using(var dialog = new OpenFileDialog())
{
dialog.Filter = "Image Files (*.bmp; *.jpg; *.png)|*.bmp;*.jpg;*.png";
dialog.Title = "Select Input Image File";
dialog.Multiselect = false;
dialog.CheckFileExists = true;
if(dialog.ShowDialog() == DialogResult.OK)
{
_currentFileName = dialog.FileName;
_picPreview.ImageLocation = _currentFileName;
_currentHistogram = null;
_pnlHistogram.Refresh();
}
}
_btnStart.Enabled = _currentFileName != null;
}
private void _timer_Tick(object sender, EventArgs e)
{
_timer.Stop();
ThreadPool.QueueUserWorkItem(new WaitCallback((s) =>
{
// Check job status
bool completed = _mapReduceJob.IsCompleted();
if(completed)
{
_currentHistogram = _mapReduceJob.GetResult();
_mapReduceJob.DeleteJobData();
}
BeginInvoke(new Action(() =>
{
if(completed)
{
_pnlHistogram.Refresh();
_btnStart.Enabled = true;
_btnBrowse.Enabled = true;
_prgProgress.Style = ProgressBarStyle.Blocks;
}
else _timer.Start();
}));
}));
}
