private void reduceImagesAsync()
{
DisableUIForRun();
List <ReduceOptions> optionsList = new List <ReduceOptions>();
foreach (ListViewItem item in listView.Items)
{
// Save reduced file to a subdirectory called "Reduced" in the same location
// as the input.
// e.g. c:\users\public\Accusoft\Common\Images\akuma.jpg -> c:\users\public\Accusoft\Common\Images\Reduced\akuma.jpg
//
string inputPath = item.SubItems[COLUMN_FILENAME].Text;
string inputFileName = Path.GetFileName(inputPath);
string inputDirectory = Path.GetDirectoryName(inputPath);
string outputDirectory = Path.Combine(inputDirectory, "Reduced");
if (IsFileExtensionJpeg(inputPath))
{
JpegReduceOptions options = new JpegReduceOptions();
options.inputPath = inputPath;
options.outputPath = Path.Combine(outputDirectory, inputFileName);
options.jpegQualityFactor = _jpegQualityFactor;
options.transformMode = _transformMode;
optionsList.Add(options);
}
else if (IsFileExtensionPng(inputPath))
{
ReduceOptions options = new ReduceOptions();
options.inputPath = inputPath;
options.outputPath = Path.Combine(outputDirectory, inputFileName);
optionsList.Add(options);
}
}
backgroundWorker.RunWorkerAsync(optionsList);
}
private void backgroundWorker_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
List <ReduceOptions> optionsList = (List <ReduceOptions>)e.Argument;
Int32 remaining = optionsList.Count;
foreach (ReduceOptions options in optionsList)
{
if (backgroundWorker.CancellationPending)
{
break;
}
// Prepare to save reduced image:
// - Delete the target file if it already exists
// - Ensure the host directory exists.
deleteFileWhenExists(options.outputPath);
Directory.CreateDirectory(Path.GetDirectoryName(options.outputPath));
JpegReduceOptions jpegReduceOptions = new JpegReduceOptions();
JpegReduceResult jpegLatestResult = new JpegReduceResult();
ReduceResult latestResult = new ReduceResult();
// Perform reduction and prepare to report results
latestResult.inputPath = options.inputPath;
latestResult.outputPath = options.outputPath;
latestResult.isErrorEncountered = false;
latestResult.remarks = String.Empty;
bool areOptionsForJpeg = (options is JpegReduceOptions) ? true : false;
if (areOptionsForJpeg)
{
jpegReduceOptions = options as JpegReduceOptions;
jpegLatestResult = new JpegReduceResult(latestResult);
jpegLatestResult.jpegQualityFactor = jpegReduceOptions.jpegQualityFactor;
jpegLatestResult.transformMode = jpegReduceOptions.transformMode;
}
try
{
if (areOptionsForJpeg)
{
Accusoft.ImagXpressSdk.ImageReduce.JpegReduce(imagXpress1, jpegReduceOptions.inputPath, jpegReduceOptions.outputPath, jpegReduceOptions.jpegQualityFactor);
}
else
{
Accusoft.ImagXpressSdk.ImageReduce.PngReduce(imagXpress1, options.inputPath, options.outputPath);
}
}
catch (ImagXpressException ex)
{
latestResult.isErrorEncountered = true;
latestResult.remarks = ex.Message;
}
catch (Exception ex)
{
latestResult.isErrorEncountered = true;
latestResult.remarks = ex.ToString();
}
// Notify UI of a progress update
int percentComplete = (int)((float)(optionsList.Count - remaining) / optionsList.Count * 100);
if (areOptionsForJpeg)
{
backgroundWorker.ReportProgress(percentComplete, jpegLatestResult);
}
else
{
backgroundWorker.ReportProgress(percentComplete, latestResult);
}
remaining--;
}
}