The X requires no change. Just flip and translate the Y.
On Fri, Oct 14, 2011 at 12:52 PM, craf <pyclut...@gmail.com> wrote:
> Hi everyone!
>
> I'm trying to learn PyCairo, and using the following code, I created a
> window with a scale of 200 x 200
>
>
> CODE:-------------------------------------
>
> #!/usr/bin/python
>
> import gtk
>
>
> class Window():
>
> def __init__(self):
>
> self.window = gtk.Window()
> self.drwArea = gtk.DrawingArea()
>
> self.window.add(self.drwArea)
> self.window.show_all()
>
> # Events-----
>
> self.drwArea.add_events(gtk.gdk.POINTER_MOTION_MASK)
>
>
> # Signals-----
>
> self.window.connect("destroy", lambda e:gtk.main_quit())
>
> self.drwArea.connect("expose-event", expose, self)
>
> self.drwArea.connect("motion-notify-event", motion_notify,
> self)
>
>
> def expose(widget, event, self):
>
> cr = widget.window.cairo_create()
>
> cr.scale(200,200)
>
>
> def motion_notify(widget, event, self):
>
> print "x=%d y=%d" % (event.x, event.y)
>
> Window()
> gtk.main()
>
> -CODE:---------------------------------------------------
>
> The problem is the coordinate system, leaving the point (0.0) in:
>
> ______________________________
> |(0,0) |
> | |
> | |
> | |
> | |
> | |
> |______________________________|
>
> and I want to stay well:
>
> _______________________________
> | |
> | |
> | |
> | |
> | |
> | |
> |(0,0)_________________________|
>
>
> I tested with cr.translate (-200, -200), but does not work.
>
>
> I appreciate any suggestions.
>
> Regards.
>
> Craf.
>
>
> DATES:
> Python 2.6.4
> Ubuntu 9.10
> Gnome 2.28.0
>
> _______________________________________________
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> http://www.daa.com.au/mailman/listinfo/pygtk
> Read the PyGTK FAQ: http://faq.pygtk.org/
>
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