On Apr 10, 2011, at 10:09 PM, Graham Cox wrote:
>
> On 11/04/2011, at 11:33 AM, Eric Gorr wrote:
>
>> Hummm...I can't seem to get it to do much. If I alter the code to:
>
>
> Have you tried using NSAffineTransform to offset the coordinate system to
> where you want to draw? You probably don't need or want to mess with your
> view coordinates or frame, you just need to move the coordinate system around
> within the view using the CTM.
>
> e.g. if you want to highlight the rect <hr> (typed into mail, untested):
>
> NSRect hr = NSMakeRect( 100, 100, 200, 120 );
>
> [NSGraphicsContext saveGraphicsState];
>
> NSAffineTransform* tfm = [NSAffineTransform transform];
> [tfm translateXBy:hr.origin.x yBy:hr.origin.y];
> [tfm concat];
>
> hr.origin = NSZeroPoint;
>
> NSRectFill( hr );
>
> [NSGraphicsContext restoreGraphicsState];
>
> So you offset to the rect origin, then draw at 0,0.
Thanks Graham.
I changed the code to:
for ( x = 0; x < 10; x++ )
{
blockFrame.origin.x = ( x * xOffset ) + NSMinX( secondThird );
blockFrame.origin.y = ( x * yOffset );
[NSGraphicsContext saveGraphicsState];
NSAffineTransform* tfm = [NSAffineTransform transform];
[tfm translateXBy:blockFrame.origin.x yBy:blockFrame.origin.y];
[tfm concat];
blockFrame.origin = NSZeroPoint;
NSRectFill( blockFrame );
[NSGraphicsContext restoreGraphicsState];
}
However, it had no effect.
I'll keep playing with this until a solution is found - if there is one.
Oh, I did figure out that, after calling setBoundsOrigin, to have the rectangle
filled with something other then black, one needs to call [[NSColor
selectedMenuItemColor] set] again. But, I still couldn't get it to do what I
wanted it to do.
Seems to be an interesting problem. Perhaps the only solution is the NSImage
route...
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