This might be considered off-topic, but this is the closest I could think of. I need help trying to track down a bug.
I have an application I'm working called cropper. (Screenshot: <http://imgur.com/iIUCu> Source: <https://github.com/astronouth7303/cropper>) It's basically a tool that lets you crop an image in multiple ways at once. It's currently suffering from a number of major bugs, but the big one that's really bothering me atm is zooming. The "workspace" is a single custom widget (ImageSpace, in imagespace.py) wrapped in a ScrolledWindow. It has the ability to zoom in and out on the content (by setting the zoom property, 1.0 is normal, 2.0 is twice as big, 0.5 is half as big). The problem is that when zoom != 1.0, it doesn't transform coordinates between the image space and widget space correctly. For calculations and such, I define two methods (img2widgetcoords and widget2imgcoords) for this transformation. (The image is always centered in the widget.) But for drawing, I'm using cairo's transformation methods. As far as I can tell, these two methods should produce the same results. But somehow, something's wrong. It's exhibited when creating new boxes, in the calculation cache system, and looking at output I made specifically for debug (the spot that widget2imgcoords calls (0,0) isn't where the upper-right corner of the image). Does anyone have any experience they can offer on this? Is this just a disconnect between cairo's methods and mine? Am I just doing something wrong? Thank you, Jamie _______________________________________________ pygtk mailing list pygtk@daa.com.au http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://faq.pygtk.org/
