[rudynorff]

Hello,

I've got several PNGs that are transparent. I want to put them together to one NSImage so that I can add it to an NSImageCell inside a TableView.
I did something like this:
NSImage *anImage = [NSImage imageNamed:@"PictureOne"];
Now, I have my background image, but how do I put the transparent ones on top of them?

Kind regards
rudy

[smeger]

Pick one of the images to be your destination image. -lockFocus on it and use the drawAtPoint or drawInRect selectors to draw the other images on top of it.

[rudynorff]

Originally posted by smeger:
Pick one of the images to be your destination image. -lockFocus on it and use the drawAtPoint or drawInRect selectors to draw the other images on top of it.

Yes! It worked. Thank you very much!

Sincerely
rudy

[poulh]

any way you could post the code or sudo code for this?

[rudynorff]

here, hope this works for you. if not just let me know, ok? i' not the cocoa pro but maybe i can help.


NSSize aSize = NSMakeSize(60.0,60.0);
NSImage *anImage = [[NSImage alloc] initWithSize:aSize];

NSImage *cloudImage =
[NSImage imageNamed:[[NSNumber numberWithInt:theClouds] stringValue]];

[anImage lockFocus]; // draw on this image
[cloudImage compositeToPoint:NSMakePoint(0,0) operation: NSCompositeSourceOver];
[anImage unlockFocus];


bye
rudy

[poulh]

so the lockfocus method says "draw to this image instead of to the view"? what if i want to go back to drawing to the view?

thanks!

[poulh]

one more question... how do i set a certain color(s) to be transparent?

[rudynorff]

Originally posted by poulh:
so the lockfocus method says "draw to this image instead of to the view"? what if i want to go back to drawing to the view? thanks!

well i havent been drawing to the view in my app. but i guess you could go back by saying [myView lockFocus]; or if you are in the view itself [self lockFocus]; have you actually tried that? if this doesnt work i will check in one of my books, but try that first ok?

bye
rudy

[poulh]

will do... at work right now but i'll try it tonight... thanks again!