{{ message }}
forked from cztomczak/cefpython
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathcefadvanced.py
More file actions
505 lines (425 loc) · 19.3 KB
/
Copy pathcefadvanced.py
File metadata and controls
505 lines (425 loc) · 19.3 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
# coding=utf-8
# Copyright (c) 2012-2014 The CEF Python authors. All rights reserved.
# 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()
You can’t perform that action at this time.