util/waterfall

   1 #!/usr/bin/python
   2
   3 import sys
   4 import cairo
   5 import pygtk
   6 pygtk.require('2.0')
   7 import gtk
   8 import gtk.gdk
   9 import pango
  10 import gobject
  11
  12 class CairoView(gtk.Window):
  13     def __init__(self, family="", slant=0, weight=0, size=18, text="the quick brown fox jumps over the lazy dog! THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG?"):
  14         gtk.Widget.__init__ (self)
  15
  16         self.family = family
  17         if slant == "italic":
  18             self.slant = cairo.FONT_SLANT_ITALIC
  19         elif slant == "oblique":
  20             self.slant = cairo.FONT_SLANT_OBLIQUE
  21         else:
  22             self.slant = cairo.FONT_SLANT_NORMAL
  23         if weight == "bold":
  24             self.weight = cairo.FONT_WEIGHT_BOLD
  25         else:
  26             self.weight = cairo.FONT_WEIGHT_NORMAL
  27         self.size = float (size)
  28         self.text = text
  29
  30     def do_realize(self):
  31         self.set_flags(self.flags() | gtk.REALIZED)
  32
  33         self.window = gtk.gdk.Window(
  34             self.get_parent_window(),
  35             width=self.allocation.width,
  36             height=self.allocation.height,
  37             window_type=gtk.gdk.WINDOW_CHILD,
  38             wclass=gtk.gdk.INPUT_OUTPUT,
  39             event_mask=self.get_events() | gtk.gdk.EXPOSURE_MASK)
  40
  41         self.window.set_user_data(self)
  42
  43         self.style.attach(self.window)
  44
  45         self.style.set_background(self.window, gtk.STATE_NORMAL)
  46
  47         self.window.move_resize(0, 0, 1000, 1000)
  48
  49     def do_unrealize(self):
  50         self.window.destroy()
  51
  52     def do_expose_event(self, event):
  53         self.draw (event)
  54
  55         return False
  56
  57     def draw(self, event = None):
  58
  59         cr = self.window.cairo_create()
  60         if event:
  61                 cr.rectangle(event.area.x, event.area.y,
  62                              event.area.width, event.area.height)
  63                 cr.clip()
  64
  65         cr.set_source_rgb (1, 1, 1)
  66         cr.paint ()
  67         cr.set_source_rgb (0, 0, 0)
  68
  69         cr.select_font_face (self.family, self.slant, self.weight)
  70
  71         for size in range (1, 60):
  72                 cr.set_font_size (size)
  73                 extents = cr.text_extents (self.text)
  74                 cr.move_to (-extents[0], -extents[1])
  75                 cr.show_text (self.text)
  76                 cr.translate (0, extents[3])
  77
  78     def run(self):
  79
  80         self.props.allow_shrink = True
  81         self.connect("destroy", gtk.main_quit)
  82         self.show()
  83
  84         gtk.main()
  85
  86 gobject.type_register(CairoView)
  87
  88 def main(args):
  89
  90     if len (args) == 1:
  91         print "usage: cairo-view family [slant [weight [size [text]]]]"
  92         sys.exit (1)
  93     cv= CairoView (*args[1:])
  94     cv.run()
  95
  96 if __name__ == "__main__":
  97     main(sys.argv)