Section:

Rotating a PDF page on iOS

To rotate a page in a PDF document.

1PTPDFDoc *doc = [[PTPDFDoc alloc] initWithFilepath: filename];
2
3// Rotate the first page 90 degrees clockwise.
4PTPage *page = [doc GetPage:1];
5PTRotate originalRotation = [page getRotation];
6PTRotate rotation;
7switch (originalRotation)
8{
9  case e_pt0:   rotation = e_pt90;  break;
10  case e_pt90:  rotation = e_pt180; break;
11  case e_pt180: rotation = e_pt270; break;
12  case e_pt270: rotation = e_pt0;   break;
13  default:      rotation = e_pt0;   break;
14}
15[page SetRotation: rotation];

About rotating pages

A page can be rotated clockwise, by 90 degrees, when displayed or printed. The Page.GetRotation() method returns the Page.Rotate enum specifying the current rotation. Similarly, Page.SetRotation() sets the current rotation.

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