# system
import os.path
import copy
import sys
import re
import base64

import inspect
from compat2and3 import unicode, xrange, PY3, gzip_decode


# gtk version (2=gtk2, 3=gtk3, 7=tk;)
ver = 2
# if running on Python3 or with commandline flag
if PY3 or "--gtk3" in sys.argv:
    ver = 3

    import gtk
    import gobject
    GdkPixbuf = gtk.gdk
    empty_pixbuf = GdkPixbuf.Pixbuf(gtk.gdk.COLORSPACE_RGB,True,8,16,16)
    empty_pixbuf.fill(0xFFFFFFFF)

# prepare gtkbuilder data
ui_xml = get_data("gtk3.xml.gz", decode=True, gz=True) #or get_data("gtk3.xml", decode=True)
if ver == 2:
    ui_xml = ui_xml.replace('version="3.0"', 'version="2.16"')



# simplified gtk constructors               ---------------------------------------------
class uikit:

    # gtk.messagebox
    @staticmethod
    def msg(text, style=gtk.MESSAGE_INFO, buttons=gtk.BUTTONS_CLOSE):
        m = gtk.MessageDialog(None, 0, style, buttons, message_format=text)
        m.show()
        m.connect("response", lambda *w: m.destroy())
        

    # manual signal binding with a dict of { (widget, signal): callback }
    @staticmethod
    def add_signals(builder, map):
        for (widget,signal),func in map.items():
            builder.get_widget(widget).connect(signal, func)

        
    # Pixbug loader (from inline string, as in `logo.png`)
    @staticmethod
    def pixbuf(buf, fmt="png", decode=True, gzip=False):
        if not buf or len(buf) < 16:
            return None
        if fmt and ver==3:
            p = GdkPixbuf.PixbufLoader.new_with_type(fmt)
        elif fmt:
            p = GdkPixbuf.PixbufLoader(fmt)
        else:
            p = GdkPixbuf.PixbufLoader()
        if decode and re.match("^[\w+/=\s]+$", str(buf)):
            buf = base64.b64decode(buf)  # inline encoding
        if gzip:
            buf = gzip_decode(buf)
        if buf:
            p.write(buf)
        pix = p.get_pixbuf()
        p.close()
        return pix