Re: Event woes for items with irregular shapes

[Yavor Doganov <yavor gnu org>]

Damon Chaplin wrote:
> On Mon, 2018-08-27 at 08:20 +0300, Yavor Doganov wrote:
> > (Country images are rects with opaque territory and translucent area
> > beyond their borders.)

> One solution may be to create your own custom canvas item, similar to
> GooCanvasImage, but keep the pixbuf around and use that to check the
> pixel, using code similar to GnomeCanvas.

Thank you very much, this works perfectly.  I just changed a bit
goo_canvas_image_is_item_at and added the pixbuf as member of the
image data struct so that I have easy access to it.

The only problem is that I had to duplicate all of goocanvasimage.c
and incorporate that into the program's code, but that's merely
inconvenience.  (I also had to declare
goo_canvas_cairo_pattern_from_pixbuf as it's a private function.)

> (I probably should have done that with GooCanvasImage.)

Perhaps it is not too late, in a future release?  The change is
minimal and I think it's worth it, even if it ends up being
ABI-incompatible.  Your call in any case, I just want to thank you
once again for the quick and accurate advice.