I think, if you can use CATiledLayer, things will be a lot more easier. -ev

On Aug 24, 2011, at 5:18 AM, Julie Porter wrote:

> I work with scans of 10 tune Nickelodeon player piano rolls.  These can be 
> over 100 yards long when unrolled.  My roll images when uncompressed can be 
> 100,000 plus pixels by 2800 pixels. In actual practice the images are made of 
> lines, not pixels.
> 
> To read these I have programs written in postscript or carbon.  My carbon 
> application is getting long in the tooth.
> 
> I have been reading over this list and the Cocoa program examples and 
> documentation over the last 3 months.
> 
> I found the NSRulerView sample application.   At issue is that interface 
> builder will only let me make a view that is 10000 pixels.
> 
> Searching the web I see suggestions to do this programmatically.   I am not 
> sure where  the code to create the window would go.  I am finding that Cocoa, 
> especially V2.0 obfuscates things, especially where to put things.  What 
> examples I have are base on images, but I am drawing lines, based on the 
> scroller positions.
> 
> I already have postscript and carbon code that tiles the images,  So if I 
> have the first set of lines to draw and the last set of lines to draw, I can 
> find these in the file and draw them.
> 
> How do I do setup the ruler and scrollviews programetically without interface 
> builder?
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