Rendering a CGPDFPage into a UIImage
- by James Antrobus
I'm trying to render a CGPDFPage (selected from a CGPDFDocument) into a UIImage to display on a view.
I have the following code in MonoTouch which gets me part way there.
RectangleF PDFRectangle = new RectangleF(0, 0, UIScreen.MainScreen.Bounds.Width, UIScreen.MainScreen.Bounds.Height);
public override void ViewDidLoad ()
{
UIGraphics.BeginImageContext(new SizeF(PDFRectangle.Width, PDFRectangle.Height));
CGContext context = UIGraphics.GetCurrentContext();
context.SaveState();
CGPDFDocument pdfDoc = CGPDFDocument.FromFile("test.pdf");
CGPDFPage pdfPage = pdfDoc.GetPage(1);
context.DrawPDFPage(pdfPage);
UIImage testImage = UIGraphics.GetImageFromCurrentImageContext();
pdfDoc.Dispose();
context.RestoreState();
UIImageView imageView = new UIImageView(testImage);
UIGraphics.EndImageContext();
View.AddSubview(imageView);
}
A section of the CGPDFPage is displayed but rotated back-to-front and upside down. My question is, how do I select the full pdf page and flip it round to display correctly. I have seen a few examples using ScaleCTM and TranslateCTM but couldn't seem to get them working.
Any examples in ObjectiveC are fine, I'll take all the help I can get :)
Thanks
