On 10/08/2009, at 8:18 AM, Mirko Viviani wrote:
I'm using -[NSColor colorWithPatternImage:] to draw a background
pattern image and I want to set
a constraint for the drawing starting rectangle.
The docs says that "The image is tiled starting at the bottom of the
window"
...
Is there any way to change this behaviour?
Yes, you can use the -setPatternPhase: method of NSGraphicsContext to
draw the pattern in the location you expect. You have to calculate the
offset yourself.
Have a look at Dave Batton's excellent DBBackgroundView for an example:
http://www.mere-mortal-software.com/blog/details.php?d=2007-01-16
--
Rob Keniger
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