PyGTK Transparent Window - window

Question

I want the window transparent, but the label to be 100% in opacity. How can I achieve this? BTW: I noticed when I upgraded to Ubuntu 12.04's unity interface that window.set_opacity wasn't working like it did on GNOME, but even if it did all the content inside the window would become transparent as well.
This is the code I started out with...
#!/usr/bin/env python
import pygtk
pygtk.require('2.0')
import gtk
import pango
import time
class Clock:
def __init__(self):
me = gtk.Window(gtk.WINDOW_TOPLEVEL)
me.connect("destroy", lambda w: gtk.main_quit())
me.set_decorated(False)
me.set_has_frame(False)
me.set_resizable(False)
me.set_property('skip-taskbar-hint', True)
self.label = gtk.Label()
self.label.modify_font(pango.FontDescription("FreeSerif Bold 50"))
attr = pango.AttrList()
fg_color = pango.AttrForeground(65535, 0, 0, 0, 65535)
attr.insert(fg_color)
self.label.set_attributes(attr)
me.add(self.label)
me.show_all()
def update(self):
self.label.set_text(time.strftime('%H:%M:%S'))
return True
clock = Clock()
gtk.timeout_add(200, clock.update)
gtk.main()
I found this topic on askubuntu and It's exactly what I was looking for however now I'm having problems having the digital clock show. Any help would be greatly appreciated.
Here's my code.
#!/usr/bin/env python
import pygtk
pygtk.require('2.0')
import gtk
import pango
import time
import cairo
class Clock (gtk.Window):
def __init__(self):
super(Clock, self).__init__()
self.connect("destroy", lambda w: gtk.main_quit())
self.set_decorated(False)
self.set_has_frame(False)
self.set_resizable(False)
self.set_property('skip-taskbar-hint', True)
self.label = gtk.Label()
self.label.modify_font(pango.FontDescription("FreeSerif Bold 50"))
attr = pango.AttrList()
fg_color = pango.AttrForeground(65535, 0, 0, 0, 65535)
attr.insert(fg_color)
self.label.set_attributes(attr)
self.screen = self.get_screen()
self.visual = self.screen.get_rgba_visual()
self.set_visual(self.visual)
self.set_app_paintable(True)
self.connect("draw", self.area_draw)
self.add(self.label)
self.show_all()
def update(self):
self.label.set_text(time.strftime('%H:%M:%S'))
return True
def area_draw(self, widget, cr):
cr.set_source_rgba(.2, .2, .2, 0.5)
cr.set_operator(cairo.OPERATOR_SOURCE)
cr.paint()
cr.set_operator(cairo.OPERATOR_OVER)
clock = Clock()
gtk.timeout_add(200, clock.update)
gtk.main()

Answer 1

Well, you have to hack a lot to make a label like this.
The best is to reinvent the wheel: make a round one.
Draw your own label.
Get window context ( mywin.window.cairo_create())) and keep track of x, y.
def draw(*args):
ctx = win.window.cairo_create()
ctx.set_source_rgba(0, 0, 0, 0)
ctx.set_operator(0) # OPERATOR_CLEAR
ctx.paint()
ctx.set_source_rgba(0, .6, 1, .3)
ctx.arc(w/2, h/2, w/2, 0, 2*3.1415)
ctx.fill()
ctx.set_source_rgba(1, .8, 0, 1)
ctx.show_text('29-May-1234') #you have some work for font, style and so on
google gives you an hack that use ctypes for loading ttf font from file; it works very well on Linux( I have no idea on win).
NOTE: Above asume that you have an composit manager, or ... rgba for widget is None.
Also put an
colormap = self.win.get_screen().get_rgba_colormap()
if colormap == None: colormap = self.win.get_screen().get_rgb_colormap()
gtk.widget_set_default_colormap(colormap)
to set rgba if posible, and also it worth a check:
if self.win.is_composited():print ('OK!')
else:self.bg = self.capt_screen()
...........
def capt_screen(self):
x, y = self.win.get_position()
win = gtk.gdk.get_default_root_window()
w, h = win.get_size()
pb = gtk.gdk.Pixbuf(0 , False, 8, w, h)
self.win.hide()
pb = pb.get_from_drawable(win, win.get_colormap(), 0, 0, 0, 0, w, h)
self.win.show_all()
if (pb != None):
im = Image.fromstring('RGB', (w, h), pb.get_pixels())
im = im.crop((x, y, x + self._w, y + self._h))
im = im.convert('RGBA')
return im #or pb
The above is „xp” transparent efect: copy the bg and bledit with your win. Only if it is not a composit manager runing. Is ok for widget - stay on desk, but flickr for something else: at every refresh window has to hide itself, capture the gb, drawing and reveal.
PS: I have an working clock example, but I use png. If you like, i could send you an tar.gz on mail