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Added GTK example on Linux (Issue 95).
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‎cefpython/AUTHORS.txt‎

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@@ -13,3 +13,4 @@ Contributors (in order of first commit):
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Dominique Burnand <dominique.burnand@@rentouch.ch>
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Greg Farrell <gregfarrell.org@@gmail.com>
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Finn Hughes <finn.hughes1@@gmail.com>
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Marcelo Fernandez <fernandezm@@gmail.com>

‎cefpython/cef3/linux/binaries_32bit/pygtk_.py‎

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# An example of embedding the CEF browser in PyGTK on Linux.
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# Tested with GTK "2.24.10".
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# The official CEF Python binaries come with tcmalloc hook
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# disabled. But if you've built custom binaries and kept tcmalloc
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# hook enabled, then be aware that in such case it is required
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# for the cefpython module to be the very first import in
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# python scripts. See Issue 73 in the CEF Python Issue Tracker
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# for more details.
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import ctypes, os, sys
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libcef_so = os.path.join(os.path.dirname(os.path.abspath(__file__)),\
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'libcef.so')
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if os.path.exists(libcef_so):
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# Import local module
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ctypes.CDLL(libcef_so, ctypes.RTLD_GLOBAL)
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if 0x02070000 <= sys.hexversion < 0x03000000:
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import cefpython_py27 as cefpython
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else:
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raise Exception("Unsupported python version: %s" % sys.version)
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else:
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# Import from package
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from cefpython3 import cefpython
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import pygtk
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pygtk.require('2.0')
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import gtk
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import gobject
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import re
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def GetApplicationPath(file=None):
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import re, os, platform
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# If file is None return current directory without trailing slash.
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if file is None:
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file = ""
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# Only when relative path.
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if not file.startswith("/") and not file.startswith("\\") and (
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not re.search(r"^[\w-]+:", file)):
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if hasattr(sys, "frozen"):
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path = os.path.dirname(sys.executable)
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elif "__file__" in globals():
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path = os.path.dirname(os.path.realpath(__file__))
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else:
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path = os.getcwd()
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path = path + os.sep + file
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if platform.system() == "Windows":
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path = re.sub(r"[/\\]+", re.escape(os.sep), path)
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path = re.sub(r"[/\\]+$", "", path)
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return path
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return str(file)
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def ExceptHook(excType, excValue, traceObject):
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import traceback, os, time, codecs
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# This hook does the following: in case of exception write it to
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# the "error.log" file, display it to the console, shutdown CEF
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# and exit application immediately by ignoring "finally" (_exit()).
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errorMsg = "\n".join(traceback.format_exception(excType, excValue,
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traceObject))
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errorFile = GetApplicationPath("error.log")
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try:
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appEncoding = cefpython.g_applicationSettings["string_encoding"]
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except:
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appEncoding = "utf-8"
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if type(errorMsg) == bytes:
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errorMsg = errorMsg.decode(encoding=appEncoding, errors="replace")
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try:
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with codecs.open(errorFile, mode="a", encoding=appEncoding) as fp:
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fp.write("\n[%s] %s\n" % (
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time.strftime("%Y-%m-%d %H:%M:%S"), errorMsg))
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except:
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print("[pygtk_.py]: WARNING: failed writing to error file: %s" % (
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errorFile))
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# Convert error message to ascii before printing, otherwise
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# you may get error like this:
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# | UnicodeEncodeError: 'charmap' codec can't encode characters
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errorMsg = errorMsg.encode("ascii", errors="replace")
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errorMsg = errorMsg.decode("ascii", errors="replace")
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print("\n"+errorMsg+"\n")
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cefpython.QuitMessageLoop()
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cefpython.Shutdown()
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os._exit(1)
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class PyGTKExample:
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mainWindow = None
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container = None
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browser = None
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exiting = None
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searchEntry = None
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vbox = None
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def __init__(self):
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self.mainWindow = gtk.Window(gtk.WINDOW_TOPLEVEL)
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self.mainWindow.connect('destroy', self.OnExit)
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self.mainWindow.set_size_request(width=800, height=600)
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self.mainWindow.set_title('PyGTK CEF example')
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self.mainWindow.realize()
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self.vbox = gtk.VBox(False, 0)
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self.vbox.pack_start(self.CreateMenu(), False, False, 0)
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self.mainWindow.add(self.vbox)
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m = re.search("GtkVBox at 0x(\w+)", str(self.vbox))
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hexID = m.group(1)
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windowID = int(hexID, 16)
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windowInfo = cefpython.WindowInfo()
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windowInfo.SetAsChild(windowID)
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# Linux requires adding "file://" for local files,
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# otherwise /home/some will be replaced as http://home/some
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self.browser = cefpython.CreateBrowserSync(
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windowInfo,
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browserSettings={},
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navigateUrl="file://"+GetApplicationPath("example.html"))
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self.vbox.show()
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self.mainWindow.show()
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gobject.timeout_add(10, self.OnTimer)
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def CreateMenu(self):
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file = gtk.MenuItem('File')
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file.show()
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filemenu = gtk.Menu()
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item = gtk.MenuItem('Open')
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filemenu.append(item)
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item.show()
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item = gtk.MenuItem('Exit')
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filemenu.append(item)
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item.show()
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file.set_submenu(filemenu)
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about = gtk.MenuItem('About')
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about.show()
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aboutmenu = gtk.Menu()
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item = gtk.MenuItem('CEF Python')
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aboutmenu.append(item)
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item.show()
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about.set_submenu(aboutmenu)
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menubar = gtk.MenuBar()
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menubar.append(file)
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menubar.append(about)
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menubar.show()
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return menubar
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def OnWidgetClick(self, widget, data):
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self.mainWindow.get_window().focus()
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def OnTimer(self):
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if self.exiting:
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return False
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cefpython.MessageLoopWork()
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return True
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def OnFocusIn(self, widget, data):
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# This function is currently not called by any of code,
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# but if you would like for browser to have automatic focus
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# add such line:
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# self.mainWindow.connect('focus-in-event', self.OnFocusIn)
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self.browser.SetFocus(True)
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def OnExit(self, widget, data=None):
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self.exiting = True
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gtk.main_quit()
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if __name__ == '__main__':
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version = '.'.join(map(str, list(gtk.gtk_version)))
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print('[pygtk_.py] GTK version: %s' % version)
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# Intercept python exceptions. Exit app immediately when exception
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# happens on any of the threads.
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sys.excepthook = ExceptHook
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# Application settings
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settings = {
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"debug": True, # cefpython debug messages in console and in log_file
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"log_severity": cefpython.LOGSEVERITY_INFO, # LOGSEVERITY_VERBOSE
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"log_file": GetApplicationPath("debug.log"), # Set to "" to disable
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"release_dcheck_enabled": True, # Enable only when debugging
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# This directories must be set on Linux
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"locales_dir_path": cefpython.GetModuleDirectory()+"/locales",
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"resources_dir_path": cefpython.GetModuleDirectory(),
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"browser_subprocess_path": "%s/%s" % (
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cefpython.GetModuleDirectory(), "subprocess"),
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}
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cefpython.Initialize(settings)
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gobject.threads_init() # Timer for the message loop
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PyGTKExample()
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gtk.main()
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cefpython.Shutdown()

‎cefpython/cef3/linux/binaries_64bit/pygtk_.py‎

Lines changed: 193 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,193 @@
1+
# An example of embedding the CEF browser in PyGTK on Linux.
2+
# Tested with GTK "2.24.10".
3+
4+
# The official CEF Python binaries come with tcmalloc hook
5+
# disabled. But if you've built custom binaries and kept tcmalloc
6+
# hook enabled, then be aware that in such case it is required
7+
# for the cefpython module to be the very first import in
8+
# python scripts. See Issue 73 in the CEF Python Issue Tracker
9+
# for more details.
10+
11+
import ctypes, os, sys
12+
libcef_so = os.path.join(os.path.dirname(os.path.abspath(__file__)),\
13+
'libcef.so')
14+
if os.path.exists(libcef_so):
15+
# Import local module
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ctypes.CDLL(libcef_so, ctypes.RTLD_GLOBAL)
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if 0x02070000 <= sys.hexversion < 0x03000000:
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import cefpython_py27 as cefpython
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else:
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raise Exception("Unsupported python version: %s" % sys.version)
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else:
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# Import from package
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from cefpython3 import cefpython
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import pygtk
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pygtk.require('2.0')
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import gtk
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import gobject
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import re
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def GetApplicationPath(file=None):
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import re, os, platform
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# If file is None return current directory without trailing slash.
34+
if file is None:
35+
file = ""
36+
# Only when relative path.
37+
if not file.startswith("/") and not file.startswith("\\") and (
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not re.search(r"^[\w-]+:", file)):
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if hasattr(sys, "frozen"):
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path = os.path.dirname(sys.executable)
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elif "__file__" in globals():
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path = os.path.dirname(os.path.realpath(__file__))
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else:
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path = os.getcwd()
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path = path + os.sep + file
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if platform.system() == "Windows":
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path = re.sub(r"[/\\]+", re.escape(os.sep), path)
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path = re.sub(r"[/\\]+$", "", path)
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return path
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return str(file)
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def ExceptHook(excType, excValue, traceObject):
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import traceback, os, time, codecs
54+
# This hook does the following: in case of exception write it to
55+
# the "error.log" file, display it to the console, shutdown CEF
56+
# and exit application immediately by ignoring "finally" (_exit()).
57+
errorMsg = "\n".join(traceback.format_exception(excType, excValue,
58+
traceObject))
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errorFile = GetApplicationPath("error.log")
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try:
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appEncoding = cefpython.g_applicationSettings["string_encoding"]
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except:
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appEncoding = "utf-8"
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if type(errorMsg) == bytes:
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errorMsg = errorMsg.decode(encoding=appEncoding, errors="replace")
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try:
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with codecs.open(errorFile, mode="a", encoding=appEncoding) as fp:
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fp.write("\n[%s] %s\n" % (
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time.strftime("%Y-%m-%d %H:%M:%S"), errorMsg))
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except:
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print("[pygtk_.py]: WARNING: failed writing to error file: %s" % (
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errorFile))
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# Convert error message to ascii before printing, otherwise
74+
# you may get error like this:
75+
# | UnicodeEncodeError: 'charmap' codec can't encode characters
76+
errorMsg = errorMsg.encode("ascii", errors="replace")
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errorMsg = errorMsg.decode("ascii", errors="replace")
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print("\n"+errorMsg+"\n")
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cefpython.QuitMessageLoop()
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cefpython.Shutdown()
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os._exit(1)
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class PyGTKExample:
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mainWindow = None
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container = None
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browser = None
87+
exiting = None
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searchEntry = None
89+
vbox = None
90+
91+
def __init__(self):
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self.mainWindow = gtk.Window(gtk.WINDOW_TOPLEVEL)
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self.mainWindow.connect('destroy', self.OnExit)
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self.mainWindow.set_size_request(width=800, height=600)
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self.mainWindow.set_title('PyGTK CEF example')
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self.mainWindow.realize()
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self.vbox = gtk.VBox(False, 0)
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self.vbox.pack_start(self.CreateMenu(), False, False, 0)
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self.mainWindow.add(self.vbox)
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m = re.search("GtkVBox at 0x(\w+)", str(self.vbox))
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hexID = m.group(1)
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windowID = int(hexID, 16)
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windowInfo = cefpython.WindowInfo()
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windowInfo.SetAsChild(windowID)
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# Linux requires adding "file://" for local files,
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# otherwise /home/some will be replaced as http://home/some
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self.browser = cefpython.CreateBrowserSync(
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windowInfo,
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browserSettings={},
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navigateUrl="file://"+GetApplicationPath("example.html"))
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self.vbox.show()
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self.mainWindow.show()
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gobject.timeout_add(10, self.OnTimer)
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def CreateMenu(self):
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file = gtk.MenuItem('File')
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file.show()
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filemenu = gtk.Menu()
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item = gtk.MenuItem('Open')
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filemenu.append(item)
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item.show()
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item = gtk.MenuItem('Exit')
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filemenu.append(item)
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item.show()
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file.set_submenu(filemenu)
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about = gtk.MenuItem('About')
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about.show()
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aboutmenu = gtk.Menu()
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item = gtk.MenuItem('CEF Python')
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aboutmenu.append(item)
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item.show()
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about.set_submenu(aboutmenu)
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menubar = gtk.MenuBar()
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menubar.append(file)
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menubar.append(about)
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menubar.show()
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return menubar
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def OnWidgetClick(self, widget, data):
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self.mainWindow.get_window().focus()
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149+
def OnTimer(self):
150+
if self.exiting:
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return False
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cefpython.MessageLoopWork()
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return True
154+
155+
def OnFocusIn(self, widget, data):
156+
# This function is currently not called by any of code,
157+
# but if you would like for browser to have automatic focus
158+
# add such line:
159+
# self.mainWindow.connect('focus-in-event', self.OnFocusIn)
160+
self.browser.SetFocus(True)
161+
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def OnExit(self, widget, data=None):
163+
self.exiting = True
164+
gtk.main_quit()
165+
166+
if __name__ == '__main__':
167+
version = '.'.join(map(str, list(gtk.gtk_version)))
168+
print('[pygtk_.py] GTK version: %s' % version)
169+
170+
# Intercept python exceptions. Exit app immediately when exception
171+
# happens on any of the threads.
172+
sys.excepthook = ExceptHook
173+
174+
# Application settings
175+
settings = {
176+
"debug": True, # cefpython debug messages in console and in log_file
177+
"log_severity": cefpython.LOGSEVERITY_INFO, # LOGSEVERITY_VERBOSE
178+
"log_file": GetApplicationPath("debug.log"), # Set to "" to disable
179+
"release_dcheck_enabled": True, # Enable only when debugging
180+
# This directories must be set on Linux
181+
"locales_dir_path": cefpython.GetModuleDirectory()+"/locales",
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"resources_dir_path": cefpython.GetModuleDirectory(),
183+
"browser_subprocess_path": "%s/%s" % (
184+
cefpython.GetModuleDirectory(), "subprocess"),
185+
}
186+
187+
cefpython.Initialize(settings)
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189+
gobject.threads_init() # Timer for the message loop
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PyGTKExample()
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gtk.main()
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cefpython.Shutdown()

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