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86

answers:

1

I have a CGPath and I want to draw it once to a NSView. Seems relatively simple but I haven't found a way in AppKit (non iphone).

+1  A: 

Inside -drawRect:, You use CGContextAddPath to add it to a context, and use CGContext(Draw|Fill|Stroke)Path to draw it. I.e. you subclass NSView, and override

- (void)drawRect:(NSRect)needsDisplayInRect
{
    CGContextRef cgcontext = [[NSGraphicsContext currentContext] graphicsPort];
    CGContextAddPath(cgcontext,path); // assumes you have CGPathRef*path;
    CGContextStrokePath(cgcontext);
}

Then -drawRect: will be called whenever appropriate. You can force the view to update by calling [view displayIfNeeded].

Yuji
CGContextAddPath doesn't actually draw the path — you need to use CGContext{Draw|Fill|Stroke}Path for that.
Chuck
Chuck is right. This is what I ended up doing. Just thought there would be a simpler way but I guess not.
James Van Boxtel
You're right. I'll correct it.
Yuji