[pygtk] Problems with coordinates in a drawing area control

[craf]

Hi Jamie

Thank you very much for answering, if you could give me a small
example,I appreciate it.

I probe with cr.translate(0,-1 * 200), but nothing

Regards

Craf
>-----Mensaje original-----
>De: Jamie Bliss <astronouth7303 at gmail.com>
>Para: craf <pyclutter at gmail.com>
>Cc: Pygtk <pygtk at daa.com.au>
>Asunto: Re: [pygtk] Problems with coordinates in a drawing area control
>F>echa: Fri, 14 Oct 2011 18:32:03 -0400

The X requires no change. Just flip and translate the Y.

On Fri, Oct 14, 2011 at 12:52 PM, craf <pyclutter at 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
>
> _______________________________________________
> pygtk mailing list   pygtk at daa.com.au
> http://www.daa.com.au/mailman/listinfo/pygtk
> Read the PyGTK FAQ: http://faq.pygtk.org/
>