#!/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()