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# Additional wx specific layer of abstraction for the cefpython

# __author__ = "Greg Kacy <grkacy@gmail.com>"

#-------------------------------------------------------------------------------

import platform

if platform.architecture()[0] != "32bit":

raise Exception("Only 32bit architecture is supported")

import os, sys

libcef_dll = os.path.join(os.path.dirname(os.path.abspath(__file__)),

'libcef.dll')

if os.path.exists(libcef_dll):

# Import the local module.

if 0x02070000 <= sys.hexversion < 0x03000000:

import cefpython_py27 as cefpython

elif 0x03000000 <= sys.hexversion < 0x04000000:

import cefpython_py32 as cefpython

else:

raise Exception("Unsupported python version: %s" % sys.version)

else:

# Import the package.

from cefpython1 import cefpython

import wx

def GetApplicationPath(file=None):

import re, os

# If file is None return current directory without trailing slash.

if file is None:

file = ""

# Only when relative path.

if not file.startswith("/") and not file.startswith("\\") and (

not re.search(r"^[\w-]+:", file)):

if hasattr(sys, "frozen"):

path = os.path.dirname(sys.executable)

elif "__file__" in globals():

path = os.path.dirname(os.path.realpath(__file__))

else:

path = os.getcwd()

path = path + os.sep + file

path = re.sub(r"[/\\]+", re.escape(os.sep), path)

path = re.sub(r"[/\\]+$", "", path)

return path

return str(file)

def ExceptHook(excType, excValue, traceObject):

import traceback, os, time, codecs

# This hook does the following: in case of exception write it to

# the "error.log" file, display it to the console, shutdown CEF

# and exit application immediately by ignoring "finally" (_exit()).

errorMsg = "\n".join(traceback.format_exception(excType, excValue,

traceObject))

errorFile = GetApplicationPath("error.log")

try:

appEncoding = cefpython.g_applicationSettings["string_encoding"]

except:

appEncoding = "utf-8"

if type(errorMsg) == bytes:

errorMsg = errorMsg.decode(encoding=appEncoding, errors="replace")

try:

with codecs.open(errorFile, mode="a", encoding=appEncoding) as fp:

fp.write("\n[%s] %s\n" % (

time.strftime("%Y-%m-%d %H:%M:%S"), errorMsg))

except:

print("cefpython: WARNING: failed writing to error file: %s" % (

errorFile))

# Convert error message to ascii before printing, otherwise

# you may get error like this:

# | UnicodeEncodeError: 'charmap' codec can't encode characters

errorMsg = errorMsg.encode("ascii", errors="replace")

errorMsg = errorMsg.decode("ascii", errors="replace")

print("\n"+errorMsg+"\n")

cefpython.QuitMessageLoop()

cefpython.Shutdown()

os._exit(1)

#-------------------------------------------------------------------------------

TIMER_MILLIS = 10

#-------------------------------------------------------------------------------

class CEFWindow(wx.Window):

"""Standalone CEF component. The class provides facilites for interacting with wx message loop"""

def __init__(self, parent, url="", size=(-1, -1), *args, **kwargs):

wx.Window.__init__(self, parent, id=wx.ID_ANY, size=size, *args, **kwargs)

self.url = url

windowInfo = cefpython.WindowInfo()

windowInfo.SetAsChild(self.GetHandle())

self.browser = cefpython.CreateBrowserSync(windowInfo,

browserSettings={}, navigateUrl=url)

self.Bind(wx.EVT_SET_FOCUS, self.OnSetFocus)

self.Bind(wx.EVT_SIZE, self.OnSize)

self.timerID = 1

self._createTimer()

def GetBrowser(self):

'''Returns the CEF's browser object'''

return self.browser

def __del__(self):

'''cleanup stuff'''

self.timer.Stop()

self.browser.CloseBrowser()

def _createTimer(self):

# this timer's events services the SEF message loops

self.timer = wx.Timer(self, self.timerID)

self.timer.Start(TIMER_MILLIS) #

wx.EVT_TIMER(self, self.timerID, self._onTimer)

def _onTimer(self, event):

"""Service CEF message loop"""

cefpython.MessageLoopWork()

def OnSetFocus(self, event):

cefpython.WindowUtils.OnSetFocus(self.GetHandle(), 0, 0, 0)

def OnSize(self, event):

cefpython.WindowUtils.OnSize(self.GetHandle(), 0, 0, 0)

#def Shutdown(self):

#print "CLOSING PAGE %s, YA MAN" % self.url

#self.timer.Stop()

#self.browser.CloseBrowser()

#-------------------------------------------------------------------------------

def initCEF(settings=None):

"""Initializes CEF, We should do it before initializing wx

If no settings passed a default is used

"""

sys.excepthook = ExceptHook

if not settings:

settings = {

"log_severity": cefpython.LOGSEVERITY_INFO,

"log_file": GetApplicationPath("debug.log"),

"release_dcheck_enabled": True # Enable only when debugging.

}

cefpython.Initialize(settings)

def shutdownCEF():

"""Shuts down CEF, should be called by app exiting code"""

cefpython.Shutdown()

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