Hi Pete,
I'm not sure what you are after, but when I was after a resizable image
control for pyGTK I found
http://jackvalmadre.wordpress.com/2008/09/21/resizable-image-control/
Which gave me a good start for what I wanted.
Cheers
Steve
Pete Jones wrote:
> I am trying to get the dimensions of an Image when the window is
> resized and create a new image with the size of the new dimensions. Am
> I going about this correctly? The program seems to freeze upon
> starting. I am thinking that when I receive the 'size-allocate' signal
> and create a new image I am causing the signal to be generated again
> and then I get into a horrible cycle of resizing. Any help would be
> appreciated.
>
> Thanks!
>
> #!/usr/bin/env python
>
> import gobject
> import gtk
> import Numeric
> import PIL.Image
> import StringIO
> import sys
>
> import gpsd
>
> class Piper(gtk.Window):
> def __init__(self):
> super(Piper, self).__init__()
>
> self.set_title("Piper")
>
> self.set_size_request(500, 500)
> self.set_position(gtk.WIN_POS_CENTER)
>
> mb = gtk.MenuBar()
>
> filemenu = gtk.Menu()
> filem = gtk.MenuItem("_File")
> filem.set_submenu(filemenu)
>
> agr = gtk.AccelGroup()
> self.add_accel_group(agr)
>
> exit = gtk.ImageMenuItem(gtk.STOCK_QUIT, agr)
> key, mod = gtk.accelerator_parse("Q")
> exit.add_accelerator("activate", agr, key,
> mod, gtk.ACCEL_VISIBLE)
>
> exit.connect("activate", gtk.main_quit)
>
> filemenu.append(exit)
>
> mb.append(filem)
>
> self.map = gtk.Image()
>
> self.statusbar = gtk.Statusbar()
> self.statusbar.push(1, "Ready")
>
> vbox = gtk.VBox(False, 2)
> vbox.pack_start(mb, False, False, 0)
> vbox.pack_start(self.map, True, True, 0)
> vbox.pack_start(self.statusbar, False, False, 0)
>
> self.add(vbox)
>
> self.map.connect("size-allocate", self.update_map)
> self.connect("destroy", gtk.main_quit)
> self.show_all()
>
> def update_map(self, widget, rect):
> print rect.x, rect.y, rect.width, rect.height
> image = PIL.Image.new("RGB", (rect.width, rect.height), (255,
> 0, 0))
> pixbuf = self.image_to_pixbuf(image)
> self.map.set_from_pixbuf(pixbuf)
>
> def image_to_pixbuf(self, image):
> fd = StringIO.StringIO()
> image.save(fd, "ppm")
> contents = fd.getvalue()
> fd.close()
> loader = gtk.gdk.PixbufLoader("pnm")
> loader.write(contents, len(contents))
> pixbuf = loader.get_pixbuf()
> loader.close()
> return pixbuf
>
> Piper()
> gtk.main()
>
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