Centering text not working.. why??

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   Hello,

I am using QuickPDF Lite 7.25.  I wanted to center my title so I tried:

library.SetTextAlign(1); // 1 = center align
library.Drawtext(10,20, "My Title");

This would draw my title all the way to the left edge and halfway off the page.  When I do SetTextAlign(0) for the default left alignment, all works well, but even if I try the right alignment (3), the text is displayed halfway off of the left side of the page.

Not sure what I amy be missing here.  Must be something stupid I am not doing.  Any clues? 

Thanks - Peter 

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peterlen Members Profile Find Members Posts Beginner Joined: 13 Sep 11 Status: Offline Points: 4	Post Options Post Reply Quote peterlen Report Post Thanks(0) Quote Reply Topic: Centering text not working.. why?? Posted: 14 Sep 11 at 7:24PM
	Hello, I am using QuickPDF Lite 7.25. I wanted to center my title so I tried: library.SetTextAlign(1); // 1 = center align library.Drawtext(10,20, "My Title"); This would draw my title all the way to the left edge and halfway off the page. When I do SetTextAlign(0) for the default left alignment, all works well, but even if I try the right alignment (3), the text is displayed halfway off of the left side of the page. Not sure what I amy be missing here. Must be something stupid I am not doing. Any clues? Thanks - Peter

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3530	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 14 Sep 11 at 11:10PM
	Could it be that the pdf was rotated internally? Cheers, Ingo

peterlen Members Profile Find Members Posts Beginner Joined: 13 Sep 11 Status: Offline Points: 4	Post Options Post Reply Quote peterlen Report Post Thanks(0) Quote Reply Posted: 14 Sep 11 at 11:59PM
	Ingo - Thanks for the reply. I know the code didn't change any rotation. The left align is correct and the X, Y coords are good as well, so I am unsure how the page rotation would be off. The Lite version does has one method that deals with rotation I believe so I will test some things there to see.

AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Posted: 20 Sep 11 at 4:46PM
	This code works as expected QP.SetOrigin(1); QP.SetTextAlign(0); // 0= left align QP.DrawText(100, 20, "My Title"); QP.SetTextAlign(1); // 1 = center align QP.DrawText(100, 40, "My Title"); QP.SetTextAlign(2); // 2 = right align QP.DrawText(100, 60, "My Title"); If you are drawing text onto an existing page then it is possible that the coodinate system and scaling on the page is not what you expect. Some pages can render the text upside down and right to left. We have a function called QP.NormalizePage() in the full QPL version that resets a page to a standard coordinate system. If you still cannot get it to work then you could send your code and PDF fiels to http://www.quickpdflibrary.com/support/support-query.php Andrew

Dan Members Profile Find Members Posts Team Player Joined: 21 Oct 11 Location: US Status: Offline Points: 23	Post Options Post Reply Quote Dan Report Post Thanks(0) Quote Reply Posted: 05 Nov 11 at 6:10PM
	I was thrown off by centering as well and I think I know your problem. For the XPos, use PageWidth / 2 so your code would look like: library.SetTextAlign(1); // 1 = center align library.Drawtext( (library.PageWidth / 2) , 20, "My Title"); Centering is done around the coordinates, not on the vertical line you specify. Dan Edited by Dan - 05 Nov 11 at 6:11PM

AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Posted: 08 Nov 11 at 2:53AM
	Dan is right. The DrawText uses the x,y coordinate as the point to align to. So if the alignment is set to RightAlign and you DrawText(50, 20, "Hello") then the right most past of the text will be a the horizontal position of x = 50.