On Jan 14, 2016, at 13:26 , Andreas Höschler <ahoe...@smartsoft.de> wrote:
>
> This should in a view with size {851, 899} get me a purple line starting
> close to the lower left corner and ending close to the top right corner. But
> that's not the case. The picture is drawn zoomed in!??
I’m not sure I understand completely. The image is drawn “zoomed in”, or the
purple rectangle is drawn “zoomed in”, or both?
Note that the NSBitmapImageRep has dimensions in pixels, The rectangle’s
coordinates are in points. You don’t show any code that’s drawing the image
back to the screen (if that’s what you’re doing), but NSImage dimensions (the
‘size’ property) is also in points, not pixels, even when the bitmap image rep
is in pixels.
But if the purple rectangle is much too big, then it sounds like this is
nothing to do with the image. Instead, your view is getting set to a size
that’s much bigger than the window. One possible reason is that your window
hierarchy is subject to autolayout, and your constraints are making the view
bigger than the window.
Probably, your next step is to log all the coordinates and sizes, of windows,
view, images and image reps that are used in your code (at the time drawing
happens).
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