Hey Nick, how are you? Try to use the PDFView's convertPoint/Rect:to/fromPage: methods <http://developer.apple.com/library/mac/#documentation/GraphicsImaging/Reference/QuartzFramework/Classes/PDFView_Class/Reference/Reference.html>. The trick is to always remember to use a common ground (the PDFView itself in this case) before converting to/from page coordinates. I don't know if the convert methods take scale factor into account, but I believe they do.
Best regards, Alvaro Costa Neto Em 27/03/2012, às 08:19, Nick escreveu: > Hello > > I would like to place a PDFAnnotation onto a PDF page in a place where > the user clicked with the mouse. > Position for PDFAnnotations is specified using "page coordinates". > Mouse position - using global coordinates, which can be translated > into PDFView coordinates. However, I can't figure out how to translate > view coordinates into page coordinates correctly. Here's what I am > doing: > > NSPoint locationInView = [self convertPoint:[theEvent > locationInWindow] fromView:[[self window] contentView]]; > NSPoint locationOnPage = [self convertPoint:locationInView > fromView:self]; > float scaleFactor = 1/[self scaleFactor]; > locationOnPage = NSMakePoint((locationOnPage.x)*scaleFactor, > (locationOnPage.y)*scaleFactor); > > This locationOnPage contains correct values (i.e., the annotation is > placed where the mouse button was clicked) only if the zooming was > 100%, and view boundaries exactly matched page boundaries (as shown on > the picture: http://rghost.net/37251215/image.png). > However, if the page is zoomed in/out, and does not exactly occupy the > whole PDFView space (http://rghost.net/37251118/image.png) I do not > get right coordinates: when I click in the bottom left corner of the > PDFView, i see annotation appear in the bottom left corner of the > page, which is not even on the page.. > > How could I do this right? > All I need is the page origin position on the view, but there's no > such a method, as it seems.. > > Thank you > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/nepheus.br%40gmail.com > > This email sent to nepheus...@gmail.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
