public void Dispose()
{
if (_prePage != null)
{
_prePage.Dispose();
}
_getPage = null;
}
private void rilasciaRisorsePaginaPrecendete(int pageNumber)
{
// Sulla prima pagina non ho ancora nulla da fare
if (pageNumber == 0)
{
return;
}
// Libero un pò di memoria, ammesso di fare ancora in tempo.
foreach (IImmagine immagine in immaginiPaginaPrecedente)
{
immagine.Dispose();
}
immaginiPaginaPrecedente.Clear();
if (lastLoadedPage != null)
{
lastLoadedPage.Dispose();
lastLoadedPage = null;
}
// Qualche cabala + incantesimi
// FormuleMagiche.rilasciaMemoria();
// Dopo il passaggio a .net 4.6 e sqlite aggiornato, questo non funziona più e si pianta
// FormuleMagiche.attendiGcFinalizers();
// FormuleMagiche.rilasciaMemoria();
}
public override void Dispose()
{
base.Dispose();
if (_OriginalPage != null)
{
_OriginalPage.Dispose();
_OriginalPage = null;
}
}
public override DocumentPage GetPage(int page_zero_based)
{
// Hackity hack
WPFDoEvents.DoEvents();
if (null != last_document_page)
{
last_document_page.Dispose();
last_document_page = null;
}
int page = page_from + page_zero_based;
StatusManager.Instance.UpdateStatus("PDFPrinter", String.Format("Printing page {0} of {1}", page_zero_based + 1, this.PageCount), page_zero_based + 1, this.PageCount, true);
// Render a page at 300 DPI...
using (Image image = Image.FromStream(new MemoryStream(pdf_renderer.GetPageByDPIAsImage(page, 300))))
{
PDFOverlayRenderer.RenderAnnotations(image, pdf_document, page, null);
PDFOverlayRenderer.RenderHighlights(image, pdf_document, page);
PDFOverlayRenderer.RenderInks(image, pdf_document, page);
BitmapSource image_page = BitmapImageTools.CreateBitmapSourceFromImage(image);
image_page.Freeze();
DrawingVisual dv = new DrawingVisual();
using (DrawingContext dc = dv.RenderOpen())
{
// Rotate the image if its orientation does not match the printer
if (
page_size.Width < page_size.Height && image_page.Width > image_page.Height ||
page_size.Width > page_size.Height && image_page.Width < image_page.Height
)
{
image_page = new TransformedBitmap(image_page, new RotateTransform(90));
image_page.Freeze();
}
dc.DrawImage(image_page, new Rect(0, 0, page_size.Width, page_size.Height));
}
++total_pages_printed;
last_document_page = new DocumentPage(dv);
return(last_document_page);
}
}
public override DocumentPage GetPage(int pageNumber)
{
pageNumber = pageNumber + _pageRange.PageFrom - 1;
if (_prevPage != null)
{
_prevPage.Dispose();
}
double w = _doc.Pages[pageNumber].Width;
double h = _doc.Pages[pageNumber].Height;
if (PageRotation(_doc.Pages[pageNumber]) == PageRotate.Rotate270 ||
PageRotation(_doc.Pages[pageNumber]) == PageRotate.Rotate90)
{
var t = w; w = h; h = t;
PrinterTicket.PageOrientation = PageOrientation.ReverseLandscape;
}
var visual = new DrawingVisual();
var page = new DocumentPage(visual);
page.PageDestroyed += Page_PageDestroyed;
RenderPage(pageNumber, visual);
_prevPage = page;
if (PagePrinted != null)
{
var args = new PagePrintedEventArgs(pageNumber - _pageRange.PageFrom + 1, _pageCount);
PagePrinted(this, args);
if (args.Cancel)
{
_pageCount = 0;
}
}
return(page);
}