Hi,
This may not be exactly what you are after, but it composites two
images and writes some text onto it too. It's for changing the app
icon, but you can deconstruct it easily to find the bit that does the
work.
The code creates a new image, and simply draws the two images to it,
then writes some text for good measure.
I've used it in Cocoa Java apps, and can verify that it works fine. It
took me a while to figure it out too. Apple's docs aren't that helpful.
If you specifically want to write overlays to PDFs, check out the
'sips' command line tool, I think it does just that.
Cheers
Moray
NSImage NewImage = new NSImage(new NSSize(128,128));
NSImage Badge = NSImage.imageNamed("Badge");
NSImage IconImage = NSImage.imageNamed("NSApplicationIcon");
NewImage.lockFocus();
IconImage.compositeToPoint(new NSPoint(0,0),
NSImage.CompositeSourceOver);
Badge.compositeToPoint(new NSPoint(60,70),
NSImage.CompositeSourceOver);
NSAttributedString T =
CocoaCommon.makeAttributedString("TEXT","small-bold-white",20f);
NSGraphics.drawAttributedString(T, new NSPoint(95,84));
NewImage.unlockFocus();
NSApplication.sharedApplication().setApplicationIconImage(NewImage);
> This is a Java question so I hope that someone will be able to help. I
> have spent hours searching for a solution but with no luck so I am
> hoping someone on this list will be able to help.
>
> I have an application that grabs a page from a PDF and outputs it as a
> GIF file; but now what I want to do is to 'draw' ontop of that image
> before writing it out (like an overlay on top of the original PDF
> page).
>
> I create an NSImage object by adding an NSPDFImageRep but then I want
> to draw say a rectangle onto that NSImage possibly with NSBezierPath.
>
> I even tried to add multiple representations to the NSImage object
> using:
>
> addRepresentations()
>
> but that did not create the effect I was hoping for (of merged layered
> content).
>
> I thought that I could create some kind of NSView and then add objects
> to it and then render that into an NSImage and then combine the two
> images (the pdf and the drawing) but that plainly doesn't work.
>
> Can anyone help please? I have been going round and round in circles
> for days.
>
> Thank you.
>
> I v a n ...
>
> --
> Ivan Markovic
> SculptLight
> http://www.sculptlight.com
> Mobile: (+353) 87 2939256
> Office: (+353) 1 2982205
> Fax: (+353) 1 2966848
>
> 2 Airfield Drive,
> Churchtown,
> Dublin 14,
> Ireland.
>
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