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cefwxpanel.py
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147 lines (125 loc) · 5.18 KB
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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()