private void _UpdateEffectivePath( )
{
outputPath.ReadOnly = sameOutputSourceOption.Checked;
browseOutput.Enabled = !sameOutputSourceOption.Checked;
if (sameOutputSourceOption.Checked)
{
if (!string.IsNullOrEmpty(inputPath.Text))
{
outputPath.Text = Path.GetDirectoryName(inputPath.Text);
}
else
{
outputPath.Text = "";
}
}
// Filename decision is moved to WorkerParams
if (m_Wp == null)
{
m_Wp = new WorkerParams( );
}
m_Wp.inputFile = inputPath.Text;
m_Wp.outputDir = outputPath.Text;
m_Wp.outputPrefix = GetFilenamePrefix( );
m_Wp.outputExt = GetUsingExt( );
m_Wp.dpi = GetUsingDpi( );
m_Wp.outputFormat = (OutputFormat)formatSelect.SelectedIndex;
if (string.IsNullOrEmpty(outputPath.Text))
{
outputPathPreview.Text = "Select input file";
}
else
{
outputPathPreview.Text = m_Wp.GetFullOutputPathForPage(1);
}
}
static void _ConvertImpl(BackgroundWorker worker, DoWorkEventArgs e)
{
WorkerParams wp = e.Argument as WorkerParams;
int dpi = wp.dpi;
int quality = 100;
switch (wp.outputFormat)
{
case OutputFormat.Jpeg80:
quality = 80; break;
case OutputFormat.Jpeg50:
quality = 50; break;
}
var jpegEncoder = ImageCodecInfo.GetImageEncoders().First(c => c.FormatID == ImageFormat.Jpeg.Guid);
var jpegParams = new EncoderParameters(1);
jpegParams.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality);
try
{
using (var document = PdfDocument.Load(wp.inputFile))
{
var pageCount = document.PageCount;
for (int i = 0; i < pageCount; i++)
{
string outputPath = wp.GetFullOutputPathForPage(i);
worker.ReportProgress(0, $"Page {i} to\n{outputPath}");
using (Image image = document.Render(i, dpi, dpi, PdfRenderFlags.CorrectFromDpi))
{
switch (wp.outputFormat)
{
case OutputFormat.Jpeg80:
case OutputFormat.Jpeg50:
image.Save(outputPath, jpegEncoder, jpegParams);
break;
default:
case OutputFormat.Png:
image.Save(outputPath, ImageFormat.Png);
break;
}
}
if (worker.CancellationPending)
{
e.Cancel = true;
break;
}
}
}
}
catch (Exception ex)
{
e.Result = ex.Message;
}
jpegParams.Dispose( );
}