def get_final_window_rect(self):
"""Gets the final size of the main window of guake. The height
is the window_height property, width is window_width and the
horizontal alignment is given by window_alignment.
"""
screen = self.window.get_screen()
height = self.client.get_int(KEY('/general/window_height'))
width = 100
halignment = self.client.get_int(KEY('/general/window_halignment'))

# get the rectangle just from the first/default monitor in the
# future we might create a field to select which monitor you
# wanna use
monitor = 1 # use the right most monitor
window_rect = screen.get_monitor_geometry(monitor)
total_width = window_rect.width
window_rect.height = window_rect.height * height / 100
window_rect.width = window_rect.width * width / 100

if width < total_width:
    if halignment == ALIGN_CENTER:
        window_rect.x = (total_width - window_rect.width) / 2
        if monitor == 1:
                right_window_rect = screen.get_monitor_geometry(0)
                window_rect.x += right_window_rect.width
    elif halignment == ALIGN_LEFT:
        window_rect.x = 0
    elif halignment == ALIGN_RIGHT:
        window_rect.x = total_width - window_rect.width
window_rect.y = window_rect.y = 0
return window_rect