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#!/usr/bin/env python
"""Python version of cairo-demo/cairo_snippets/cairo_snippets_gtk.c
"""
from __future__ import division
from math import pi as M_PI # used by many snippets
import os.path
import sys
import cairo
import gtk
import pango
from snippets import snip_list, snippet_normalize
Width, Height = 400, 400
snippets_path = os.path.join(os.path.dirname(__file__), 'snippets')
def gdkcolor_to_rgb (gdkcolor):
return gdkcolor.red/65535, gdkcolor.green/65535, gdkcolor.blue/65535
class Window (gtk.Window):
"""Composite widget"""
def __init__ (self, title=None, type=gtk.WINDOW_TOPLEVEL):
gtk.Window.__init__ (self, type)
self.set_default_size (Width, Height)
self.da = gtk.DrawingArea()
self.da.connect('expose-event', self.da_expose_event)
def put_in_frame (widget):
frame = gtk.Frame (label=None)
frame.set_property ('shadow_type', gtk.SHADOW_IN)
frame.add (widget)
return frame
vpaned = gtk.VPaned()
self.add (vpaned)
sv = self.create_text_view()
vpaned.pack1 (put_in_frame (sv), True, True)
sv.set_size_request (Width, int(Height/2))
hpaned = gtk.HPaned()
vpaned.pack2 (hpaned, True, False)
sl = self.create_snippet_list()
hpaned.pack1 (put_in_frame (sl), True, True)
hpaned.pack2 (put_in_frame (self.da), True, True)
self.da.set_size_request (int(Width/2), int(Height/2))
# set focus to snippet list
sl.get_child().grab_focus()
def da_expose_event (self, da, event, data=None):
x, y, width, height = da.allocation
cr = da.window.cairo_create()
try:
exec (self.snippet_str, globals(), locals())
except:
exc_type, exc_value = sys.exc_info()[:2]
print >> sys.stderr, exc_type, exc_value
return True
def create_text_view (self):
sw = gtk.ScrolledWindow()
sw.set_property ('shadow-type', gtk.SHADOW_IN)
sw.set_policy (hscrollbar_policy=gtk.POLICY_AUTOMATIC,
vscrollbar_policy=gtk.POLICY_AUTOMATIC)
text_view = gtk.TextView()
sw.add (text_view)
# set a fixed width font, so any tabs line up
text_view.modify_font(pango.FontDescription ("Fixed"))
self.text_buffer = text_view.get_buffer()
return sw
def cb_selection_changed (self, tselection, data=None):
model, iter = tselection.get_selected()
if iter:
filename = model[iter][0] + '.py'
try:
path = os.path.join(snippets_path, filename)
file_obj = open(path, 'r')
self.snippet_str = file_obj.read()
file_obj.close()
self.text_buffer.set_text(self.snippet_str)
except IOError, exc:
print "%s: %s" % (exc.filename, exc.strerror)
self._draw_pixmap = True
self.da.queue_draw()
def create_snippet_list (self):
sw = gtk.ScrolledWindow()
sw.set_property ('shadow-type', gtk.SHADOW_IN)
sw.set_policy (hscrollbar_policy=gtk.POLICY_NEVER,
vscrollbar_policy=gtk.POLICY_AUTOMATIC)
model = gtk.ListStore (str,)
for row in snip_list:
model.append (row=(row,))
tree_view = gtk.TreeView (model)
sw.add (tree_view)
tree_view.set_property ('headers-visible', False)
tree_view.set_property ('search-column', 0)
tree_view.set_property ('rules-hint', False)
tselection = tree_view.get_selection()
tselection.connect ("changed", self.cb_selection_changed)
tselection.set_mode (gtk.SELECTION_BROWSE)
cr = gtk.CellRendererText()
tvc = gtk.TreeViewColumn (None, cr, text=0)
tree_view.append_column (tvc)
tselection.select_path(0,) # select first item
return sw
if __name__ == '__main__':
app = Window ()
app.connect('destroy', gtk.main_quit)
app.show_all()
gtk.main()
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