CGContext.DrawPDFPage(CGPDFPage) Method

Definition

Renders the specified PDF page.

public void DrawPDFPage (CoreGraphics.CGPDFPage page);
member this.DrawPDFPage : CoreGraphics.CGPDFPage -> unit

Parameters

page
CGPDFPage

The PDF page to be rendered.

Remarks

The following example shows how to render the first page of a PDF file:


doc = CGPDFDocument.FromFile (Path.Combine (NSBundle.MainBundle.BundlePath, "Images/QuartzImageDrawing.pdf"));
if (doc == null)
		throw new Exception ("Could not load document");

using (var ctxt = UIGraphics.GetCurrentContext ()) { // PDF page drawing expects a Lower-Left coordinate system, so we flip the coordinate system // before we start drawing. context.TranslateCTM (0, Bounds.Height); context.ScaleCTM (1, -1);

// Grab the first PDF page
using (CGPDFPage page = doc.GetPage (1)){
	// We're about to modify the context CTM to draw the PDF page where we want it, so save the graphics state in case we want to do more drawing
	context.SaveState ();
	
	// CGPDFPageGetDrawingTransform provides an easy way to get the transform for a PDF page. It will scale down to fit, including any
	// base rotations necessary to display the PDF page correctly.
	
	CGAffineTransform pdfTransform = page.GetDrawingTransform (CGPDFBox.Crop, Bounds, 0, true);

	// And apply the transform.
	context.ConcatCTM (pdfTransform);
	// Finally, we draw the page and restore the graphics state for further manipulations!
	context.DrawPDFPage (page);
	context.RestoreState();
}				

}

Applies to