/* Callback from ghostscript with the rendered image. */
private void MainPageCallback(int width, int height, int raster, double zoom_in,
int page_num, IntPtr data)
{
Byte[] bitmap = new byte[raster * height];
idata_t image_data = new idata_t();
Marshal.Copy(data, bitmap, 0, raster * height);
image_data.bitmap = bitmap;
image_data.page_num = page_num;
image_data.width = width;
image_data.height = height;
image_data.raster = raster;
image_data.zoom = zoom_in;
m_images_rendered.Add(image_data);
/* Get the 1.0 page scalings */
if (m_firstime)
{
pagesizes_t page_size = new pagesizes_t();
page_size.size.X = width;
page_size.size.Y = height;
m_page_sizes.Add(page_size);
}
/* Dispatch progress bar update on UI thread */
System.Windows.Application.Current.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Send, new Action(() =>
{
m_page_progress_count += 1;
xaml_RenderProgress.Value = ((double)m_page_progress_count / (double)m_numpages) * 100.0;
}));
}
/* Callback from ghostscript with the rendered thumbnail. Also update progress */
private void ThumbPageCallback(int width, int height, int raster, double zoom_in,
int page_num, IntPtr data)
{
Byte[] bitmap = new byte[raster * height];
idata_t thumb = new idata_t();
Marshal.Copy(data, bitmap, 0, raster * height);
thumb.bitmap = bitmap;
thumb.page_num = page_num;
thumb.width = width;
thumb.height = height;
thumb.raster = raster;
thumb.zoom = zoom_in;
m_list_thumb.Add(thumb);
/* Dispatch progress bar update on UI thread */
System.Windows.Application.Current.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Send, new Action(() =>
{
/* Logrithmic but it will show progress */
xaml_RenderProgress.Value = ((double)page_num / ((double)page_num + 1)) * 100.0;
}));
}
