private void browseOutput_Click(object sender, EventArgs e)
{
_UpdateEffectivePath( );
string forecastFilename = m_Wp.GetFullOutputPathForPage(1);
var sfd = new SaveFileDialog( );
sfd.InitialDirectory = outputPath.Text;
sfd.FileName = forecastFilename;
sfd.DefaultExt = GetUsingExt( );
sfd.Filter = "Image file|*.*";
sfd.ValidateNames = false;
sfd.CheckFileExists = false;
sfd.CheckPathExists = true;
sfd.RestoreDirectory = true;
if (sfd.ShowDialog( ) == DialogResult.OK)
{
outputPath.Text = Path.GetDirectoryName(sfd.FileName);
_UpdateEffectivePath( );
}
}
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( );
}