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#!/usr/bin/python
import sys
import cairo
import pygtk
pygtk.require('2.0')
import gtk
import gtk.gdk
import pango
import gobject
class CairoView(gtk.Window):
def __init__(self, family="", slant=0, weight=0, size=18, text="The Quick Brown Fox Jumps Over The Lazy Dog!"):
gtk.Widget.__init__ (self)
self.family = family
if slant == "italic":
self.slant = cairo.FONT_SLANT_ITALIC
elif slant == "oblique":
self.slant = cairo.FONT_SLANT_OBLIQUE
else:
self.slant = cairo.FONT_SLANT_NORMAL
if weight == "bold":
self.weight = cairo.FONT_WEIGHT_BOLD
else:
self.weight = cairo.FONT_WEIGHT_NORMAL
self.size = float (size)
self.text = text
def do_realize(self):
self.set_flags(self.flags() | gtk.REALIZED)
self.window = gtk.gdk.Window(
self.get_parent_window(),
width=self.allocation.width,
height=self.allocation.height,
window_type=gtk.gdk.WINDOW_CHILD,
wclass=gtk.gdk.INPUT_OUTPUT,
event_mask=self.get_events() | gtk.gdk.EXPOSURE_MASK)
self.window.set_user_data(self)
self.style.attach(self.window)
self.style.set_background(self.window, gtk.STATE_NORMAL)
self.width, self.height = self.draw ()
self.window.move_resize(0, 0, self.width, self.height)
def do_unrealize(self):
self.window.destroy()
def do_expose_event(self, event):
self.draw (event)
return False
def draw(self, event = None):
cr = self.window.cairo_create()
if event:
cr.rectangle(event.area.x, event.area.y,
event.area.width, event.area.height)
cr.clip()
cr.set_source_rgb (1, 1, 1)
cr.paint ()
cr.select_font_face (self.family, self.slant, self.weight)
cr.set_font_size (self.size)
PAD = 30
extents = cr.text_extents (self.text)
cr.translate (PAD-extents[0], PAD-extents[1])
font_extents = cr.font_extents ()
cr.rectangle (0, -font_extents[0], extents[4], font_extents[2])
cr.move_to (-PAD, 0)
cr.line_to (extents[2]+PAD, 0)
cr.set_source_rgba (1, 0, 0, .7)
cr.stroke ()
cr.rectangle (*extents[:4])
cr.set_source_rgba (0, 1, 0, .7)
cr.stroke ()
cr.move_to (0, 0)
cr.set_source_rgb (0, 0, 0)
cr.show_text (self.text)
return int (extents[2]) + 2 * PAD, int (extents[3]) + 2 * PAD
def run(self):
self.props.allow_shrink = True
self.connect("destroy", gtk.main_quit)
self.show()
gtk.main()
gobject.type_register(CairoView)
def main(args):
if len (args) == 1:
print "usage: cairo-view family [slant [weight [size [text]]]]"
sys.exit (1)
cv= CairoView (*args[1:])
cv.run()
if __name__ == "__main__":
main(sys.argv)
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