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# coding=utf-8

# License: New BSD License.

# Website: http://code.google.com/p/cefpython/

# Checking whether python architecture and version are valid,

# otherwise an obfuscated error will be thrown when trying

# to load cefpython.pyd with a message "DLL load failed".

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 cefwindow

# pywin32 extension

import win32api

import win32con

import win32gui

import re

import imp

import inspect

import pprint

import time

import imp

DEBUG = True

# TODO: example of creating popup windows from python,

# call WindowInfo.SetAsPopup().

# TODO: example of creating modal windows from python.

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)

def InitDebugging():

# Whether to print & log debug messages

if DEBUG:

cefpython.g_debug = True

cefpython.g_debugFile = GetApplicationPath("debug.log")

cefwindow.g_debug = True

def CefAdvanced():

sys.excepthook = ExceptHook

InitDebugging()

appSettings = dict()

appSettings["log_file"] = GetApplicationPath("debug.log")

# LOGSEVERITY_INFO - less debug oput.

# LOGSEVERITY_DISABLE - will not create "debug.log" file.

appSettings["log_severity"] = cefpython.LOGSEVERITY_VERBOSE

# Enable only when debugging, otherwise performance might hurt.

appSettings["release_dcheck_enabled"] = True

# Must be set so that OnUncaughtException() is called.

appSettings["uncaught_exception_stack_size"] = 100

cefpython.Initialize(applicationSettings=appSettings)

# Closing main window quits the application as we define

# WM_DESTOROY message.

wndproc = {

win32con.WM_CLOSE: CloseWindow,

win32con.WM_DESTROY: QuitApplication,

win32con.WM_SIZE: cefpython.WindowUtils.OnSize,

win32con.WM_SETFOCUS: cefpython.WindowUtils.OnSetFocus,

win32con.WM_ERASEBKGND: cefpython.WindowUtils.OnEraseBackground

}

windowHandle = cefwindow.CreateWindow(

title="CefAdvanced", className="cefadvanced",

width=900, height=710, icon="icon.ico", windowProc=wndproc)

browserSettings = dict()

browserSettings["history_disabled"] = False

browserSettings["universal_access_from_file_urls_allowed"] = True

browserSettings["file_access_from_file_urls_allowed"] = True

javascriptBindings = cefpython.JavascriptBindings(

bindToFrames=False, bindToPopups=True)

windowInfo = cefpython.WindowInfo()

windowInfo.SetAsChild(windowHandle)

browser = cefpython.CreateBrowserSync(

windowInfo, browserSettings=browserSettings,

navigateUrl=GetApplicationPath("cefadvanced.html"))

browser.SetUserData("outerWindowHandle", windowInfo.parentWindowHandle)

browser.SetClientHandler(ClientHandler())

browser.SetJavascriptBindings(javascriptBindings)

javascriptRebindings = JavascriptRebindings(javascriptBindings, browser)

javascriptRebindings.Bind()

browser.SetUserData("javascriptRebindings", javascriptRebindings)

cefpython.MessageLoop()

cefpython.Shutdown()

def CloseWindow(windowHandle, msg, wparam, lparam):

browser = cefpython.GetBrowserByWindowHandle(windowHandle)

browser.CloseBrowser()

return win32gui.DefWindowProc(windowHandle, msg, wparam, lparam)

def QuitApplication(windowHandle, msg, wparam, lparam):

win32gui.PostQuitMessage(0)

return 0

class JavascriptRebindings:

javascriptBindings = None

browser = None

def __init__(self, javascriptBindings, browser):

self.javascriptBindings = javascriptBindings

self.browser = browser

def Bind(self):

# These bindings are rebinded when pressing F5.

# It's not useful for the main module as it can't be reloaded.

python = Python()

python.browser = self.browser

# Overwrite "window.alert".

# self.javascriptBindings.SetFunction("alert", python.Alert)

self.javascriptBindings.SetObject("python", python)

self.javascriptBindings.SetObject("browser", self.browser)

self.javascriptBindings.SetObject("frame", self.browser.GetMainFrame())

self.javascriptBindings.SetProperty("PyConfig",

{"option1": True, "option2": 20})

def Rebind(self):

# Reload all application modules, next rebind javascript bindings.

# Called from: OnKeyEvent > F5.

currentDir = GetApplicationPath()

for mod in sys.modules.values():

if mod and mod.__name__ != "__main__":

# This module resides in app's directory.

if hasattr(mod, "__file__") and (

mod.__file__.find(currentDir) != -1):

try:

imp.reload(mod)

if DEBUG:

print("Reloaded module: %s" % mod.__name__)

except (Exception, exc):

print("WARNING: reloading module failed: %s. "

"Exception: %s" % (mod.__name__, exc))

# cefpython & cefwindow modules have been reloaded,

# we need to re-initialize debugging.

InitDebugging()

self.Bind()

self.javascriptBindings.Rebind()

class ClientHandler:

def OnLoadStart(self, browser, frame):

# print("OnLoadStart(): frame url: %s" % frame.GetUrl())

pass

def OnLoadEnd(self, browser, frame, httpStatusCode):

# print("OnLoadEnd(): frame url: %s" % frame.GetUrl())

pass

def OnLoadError(self, browser, frame, errorCode, failedUrl, errorText):

# print("OnLoadError() failedUrl: %s" % (failedUrl))

errorText[0] = ("Custom error message when loading url fails, "

"see: def OnLoadError()")

return True

def OnKeyEvent(self, browser, eventType, keyCode, modifiers, isSystemKey,

isAfterJavascript):

# print("eventType = %s, keyCode=%s, modifiers=%s, isSystemKey=%s" %

# (eventType, keyCode, modifiers, isSystemKey))

if eventType != cefpython.KEYEVENT_RAWKEYDOWN or isSystemKey:

return False

# Bind F12 to developer tools.

if keyCode == cefpython.VK_F12 and (

cefpython.IsKeyModifier(cefpython.KEY_NONE, modifiers)):

browser.ShowDevTools()

return True

# Bind F5 to refresh browser window.

# Also reload all modules and rebind javascript bindings.

if keyCode == cefpython.VK_F5 and (

cefpython.IsKeyModifier(cefpython.KEY_NONE, modifiers)):

# When we press F5 in Developer Tools popup, there are

# no bindings in this window, error would be thrown.

# Pressing F5 in Developer Tools seem to not refresh

# the parent window.

if browser.GetUserData("javascriptRebindings"):

browser.GetUserData("javascriptRebindings").Rebind()

# This is not required, rebinding will work without refreshing page.

browser.ReloadIgnoreCache()

return True

# Bind Ctrl(+) to increase zoom level

if keyCode in (187, 107) and (

cefpython.IsKeyModifier(cefpython.KEY_CTRL, modifiers)):

browser.SetZoomLevel(browser.GetZoomLevel() +1)

return True

# Bind Ctrl(-) to reduce zoom level

if keyCode in (189, 109) and (

cefpython.IsKeyModifier(cefpython.KEY_CTRL, modifiers)):

browser.SetZoomLevel(browser.GetZoomLevel() -1)

return True

# Bind F11 to go fullscreen.

if keyCode == cefpython.VK_F11 and (

cefpython.IsKeyModifier(cefpython.KEY_NONE, modifiers)):

browser.ToggleFullscreen()

return True

return False

def OnConsoleMessage(self, browser, message, source, line):

appdir = GetApplicationPath().replace("\\", "/")

if appdir[1] == ":":

appdir = appdir[0].upper() + appdir[1:]

source = source.replace("file:///", "")

source = source.replace(appdir, "")

print("Console message: %s (%s:%s)\n" % (message, source, line));

return False

def OnResourceResponse(self, browser, url, response, filter):

# This function does not get called for local disk sources (file:///).

pass

# print("Resource: %s (status=%s)" % (url, response.GetStatus()))

# response.SetHeaderMap(

# {"Content-Length": 123, "Content-Type": "none"})

# print("response.GetHeaderMap(): %s" % response.GetHeaderMap())

# print("response.GetHeaderMultimap(): %s" % (

# response.GetHeaderMultimap()))

def OnUncaughtException(self, browser, frame, exception, stackTrace):

if not "cefadvanced.html" in frame.GetUrl():

# Exit application when javascript encountered

# only for the cefadvanced.html example.

return

url = exception["scriptResourceName"]

stackTrace = cefpython.FormatJavascriptStackTrace(stackTrace)

if re.match(r"file:/+", url):

# Get a relative path of the html/js file,

# get rid of the "file://d:/.../cefpython/".

url = re.sub(r"^file:/+", "", url)

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

url = re.sub(r"%s" % re.escape(GetApplicationPath()),

"", url, flags=re.IGNORECASE)

url = re.sub(r"^%s" % re.escape(os.sep), "", url)

raise Exception("%s.\n"

"On line %s in %s.\n"

"Source of that line: %s\nStack trace:\n%s" % (

exception["message"], exception["lineNumber"],

url, exception["sourceLine"], stackTrace))

def OnTitleChange(self, browser, title):

# cefpython.WindowUtils.SetTitle(browser, "ąś")

# return False

return True

def ModuleExists(module):

try:

imp.find_module(module)

return True

except ImportError:

return False

class Python:

browser = None

def SaveImage(self, outfile, format):

outfile = GetApplicationPath(outfile)

(width, height) = self.browser.GetSize(cefpython.PET_VIEW)

buffer = self.browser.GetImage(cefpython.PET_VIEW, width, height)

if ModuleExists("PIL"):

self.__SaveImageWithPil(buffer, width, height, outfile, format)

elif ModuleExists("pygame"):

self.__SaveImageWithPygame(buffer, width, height, outfile)

else:

print("Could not save image, no image library found (PIL, pygame)")

if os.path.exists(outfile):

os.system(outfile)

def __SaveImageWithPil(self, buffer, width, height, outfile, format):

from PIL import Image

image = Image.fromstring(

"RGBA", (width,height),

buffer.GetString(mode="rgba", origin="top-left"),

"raw", "RGBA", 0, 1)

image.save(outfile, format)

def __SaveImageWithPygame(self, buffer, width, height, outfile):

import pygame

# Format "PNG" is read from the filename.

surface = pygame.image.frombuffer(

buffer.GetString(mode="rgba", origin="top-left"),

(width, height), "RGBA")

pygame.image.save(surface, outfile)

def ExecuteJavascript(self, jsCode):

self.browser.GetMainFrame().ExecuteJavascript(jsCode)

def LoadUrl(self):

self.browser.GetMainFrame().LoadUrl(

GetApplicationPath("cefsimple.html"))

def Version(self):

return sys.version

def Test1(self, arg1):

print("python.Test1(%s) called" % arg1)

return ("This string was returned from python function python.Test1()"

" [unicode: ąś]")

def Test2(self, arg1, arg2, arg3):

# ąś == b"\xc4\x85\xc5\x9b"

# ąś == u"\u0105\u015b"

# Displaying utf-8 characters to the console may result

# in UnicodeDecodeError, thus let's convert it to bytes

# and display the raw b"\xc4\x85\xc5\x9b" characters.

arg2_original = arg2

if type(arg2) != bytes:

arg2 = arg2.encode(encoding="utf-8")

print("python.Test2(%s, '%s', '%s') called" % (arg1, arg2, arg3))

# Testing nested return values.

return [1,2, [2.1, {'3': 3, '4': [5,6]}], "[unicode: ąś]",

arg2_original, arg2]

def PrintPyConfig(self):

print("python.PrintPyConfig(): %s" % (

self.browser.GetMainFrame().GetProperty("PyConfig")))

def ChangePyConfig(self):

self.browser.GetMainFrame().SetProperty("PyConfig",

"Changed in python during runtime in python.ChangePyConfig()")

def TestJavascriptCallback(self, jsCallback):

if isinstance(jsCallback, cefpython.JavascriptCallback):

print("python.TestJavascriptCallback(): jsCallback.GetName(): "

"%s" % jsCallback.GetName())

print("jsCallback.Call(1, [2,3], ('tuple', 'tuple'), "

"'unicode string')")

if bytes == str:

# Python 2.7

jsCallback.Call(1, [2,3], ('tuple', 'tuple'),

unicode('unicode string [ąś]', encoding="utf-8"))

else:

# Python 3.2 - there is no "unicode()" in python 3

jsCallback.Call(1, [2,3], ('tuple', 'tuple'),

'unicode string [ąś]',

'bytes string [ąś]'.encode('utf-8'))

else:

raise Exception("python.TestJavascriptCallback() failed: "

"given argument is not a javascript callback function")

def TestPythonCallbackThroughReturn(self):

print("python.TestPythonCallbackThroughReturn() called, "

"returning PyCallback.")

return self.PyCallback

def PyCallback(self, *args):

print("python.PyCallback() called, args: %s" % str(args))

def TestPythonCallbackThroughJavascriptCallback(self, jsCallback):

print("python.TestPythonCallbackThroughJavascriptCallback(jsCallback) "

"called")

print("jsCallback.Call(PyCallback)")

jsCallback.Call(self.PyCallback)

def Alert(self, msg):

print("python.Alert() called instead of window.alert()")

win32gui.MessageBox(self.browser.GetUserData("outerWindowHandle"),

msg, "python.Alert()", win32con.MB_ICONQUESTION)

def ChangeAlertDuringRuntime(self):

self.browser.GetMainFrame().SetProperty("alert", self.Alert2)

def Alert2(self, msg):

print("python.Alert2() called instead of window.alert()")

win32gui.MessageBox(self.browser.GetUserData("outerWindowHandle"),

msg, "python.Alert2()", win32con.MB_ICONSTOP)

def Find(self, searchText, findNext=False):

self.browser.Find(1, searchText, forward=True, matchCase=False,

findNext=findNext)

def ResizeWindow(self):

cefwindow.MoveWindow(self.browser.GetUserData("outerWindowHandle"),

width=500, height=500)

def MoveWindow(self):

cefwindow.MoveWindow(self.browser.GetUserData("outerWindowHandle"),

xpos=0, ypos=0)

def GetType(self, arg1):

return "arg1=%s, type=%s" % (arg1, type(arg1).__name__)

def CreateSecondBrowser(self):

# Closing second window won't quit application,

# WM_DESTROY not defined here.

wndproc2 = {

win32con.WM_CLOSE: CloseWindow,

win32con.WM_SIZE: cefpython.WindowUtils.OnSize,

win32con.WM_SETFOCUS: cefpython.WindowUtils.OnSetFocus,

win32con.WM_ERASEBKGND: cefpython.WindowUtils.OnEraseBackground

}

windowHandle2 = cefwindow.CreateWindow(

title="SecondBrowser", className="secondbrowser",

width=800, height=600, xpos=0, ypos=0, icon="icon.ico",

windowProc=wndproc2)

windowInfo2 = cefpython.WindowInfo()

windowInfo2.SetAsChild(windowHandle2)

browser2 = cefpython.CreateBrowserSync(

windowInfo2, browserSettings={},

navigateUrl=GetApplicationPath("cefsimple.html"))

browser2.SetUserData("outerWindowHandle", windowHandle2)

def GetUnicodeString(self):

if bytes == str:

# Python 2.7. Can't write u"This is unicode string \u2014"

# because Python 3 complains.

return unicode("This is unicode string \xe2\x80\x94".decode("utf-8"))

else:

return "Unicode string can be tested only in python 2.x"

def TransparentPopup(self):

windowInfo = cefpython.WindowInfo()

windowInfo.SetAsPopup(self.browser.GetWindowHandle(), "transparent")

windowInfo.SetTransparentPainting(True)

cefpython.CreateBrowserSync(windowInfo, browserSettings={},

navigateUrl=GetApplicationPath("cefsimple.html"))

if __name__ == "__main__":

CefAdvanced()

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