In https://github.com/cztomczak/cefpython/blob/master/src/linux/binaries_64bit/kivy_.py, pygtk and gtk are used. (Note that the source code is tested in Linux only, and I am using Windows)
When I tried to pip install pygtk, there was an error
Collecting pygtk
Using cached pygtk-2.24.0.tar.bz2 (2.4 MB)
ERROR: Command errored out with exit status 1:
command: 'c:\users\jared\appdata\local\programs\python\python37\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\jared\\AppData\\Local\\Temp\\pip-install-rle_vbsd\\pygtk\\setup.py'"'"'; __file__='"'"'C:\\Users\\jared\\AppData\\Local\\Temp\\pip-install-rle_vbsd\\pygtk\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:\Users\jared\AppData\Local\Temp\pip-pip-egg-info-pex79haa'
cwd: C:\Users\jared\AppData\Local\Temp\pip-install-rle_vbsd\pygtk\
Complete output (1 lines):
ERROR: Could not import dsextras module: Make sure you have installed pygobject.
----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
Thus, I went to pip install pygobject, error again.
Collecting pygobject
Using cached PyGObject-3.38.0.tar.gz (712 kB)
Installing build dependencies ... error
ERROR: Command errored out with exit status 1:
command: 'c:\users\jared\appdata\local\programs\python\python37\python.exe' 'c:\users\jared\appdata\local\programs\python\python37\lib\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\jared\AppData\Local\Temp\pip-build-env-t_0q3g_h\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel pycairo
cwd: None
Complete output (34 lines):
Collecting setuptools
Using cached setuptools-50.3.0-py3-none-any.whl (785 kB)
Collecting wheel
Using cached wheel-0.35.1-py2.py3-none-any.whl (33 kB)
Collecting pycairo
Using cached pycairo-1.19.1.tar.gz (205 kB)
Using legacy 'setup.py install' for pycairo, since package 'wheel' is not installed.
Installing collected packages: setuptools, wheel, pycairo
Running setup.py install for pycairo: started
Running setup.py install for pycairo: finished with status 'error'
ERROR: Command errored out with exit status 1:
command: 'c:\users\jared\appdata\local\programs\python\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\jared\\AppData\\Local\\Temp\\pip-install-faiuku8y\\pycairo\\setup.py'"'"'; __file__='"'"'C:\\Users\\jared\\AppData\\Local\\Temp\\pip-install-faiuku8y\\pycairo\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\jared\AppData\Local\Temp\pip-record-kq9tlvv8\install-record.txt' --single-version-externally-managed --prefix 'C:\Users\jared\AppData\Local\Temp\pip-build-env-t_0q3g_h\overlay' --compile --install-headers 'C:\Users\jared\AppData\Local\Temp\pip-build-env-t_0q3g_h\overlay\Include\pycairo'
cwd: C:\Users\jared\AppData\Local\Temp\pip-install-faiuku8y\pycairo\
Complete output (18 lines):
running install
running build
running build_py
creating build
creating build\lib.win-amd64-3.7
creating build\lib.win-amd64-3.7\cairo
copying cairo\__init__.py -> build\lib.win-amd64-3.7\cairo
copying cairo\__init__.pyi -> build\lib.win-amd64-3.7\cairo
copying cairo\py.typed -> build\lib.win-amd64-3.7\cairo
running build_ext
building 'cairo._cairo' extension
creating build\temp.win-amd64-3.7
creating build\temp.win-amd64-3.7\Release
creating build\temp.win-amd64-3.7\Release\cairo
C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.27.29110\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -DPYCAIRO_VERSION_MAJOR=1 -DPYCAIRO_VERSION_MINOR=19 -DPYCAIRO_VERSION_MICRO=1 -Ic:\users\jared\appdata\local\programs\python\python37\include -Ic:\users\jared\appdata\local\programs\python\python37\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.27.29110\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" /Tccairo/device.c /Fobuild\temp.win-amd64-3.7\Release\cairo/device.obj
device.c
C:\Users\jared\AppData\Local\Temp\pip-install-faiuku8y\pycairo\cairo\pycairo.h(37): fatal error C1083: Cannot open include file: 'cairo.h': No such file or directory
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.27.29110\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2
----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\jared\appdata\local\programs\python\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\jared\\AppData\\Local\\Temp\\pip-install-faiuku8y\\pycairo\\setup.py'"'"'; __file__='"'"'C:\\Users\\jared\\AppData\\Local\\Temp\\pip-install-faiuku8y\\pycairo\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\jared\AppData\Local\Temp\pip-record-kq9tlvv8\install-record.txt' --single-version-externally-managed --prefix 'C:\Users\jared\AppData\Local\Temp\pip-build-env-t_0q3g_h\overlay' --compile --install-headers 'C:\Users\jared\AppData\Local\Temp\pip-build-env-t_0q3g_h\overlay\Include\pycairo' Check the logs for full command output.
----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\jared\appdata\local\programs\python\python37\python.exe' 'c:\users\jared\appdata\local\programs\python\python37\lib\site-packages\pip' install --ignore-installed --no-user --prefix 'C:\Users\jared\AppData\Local\Temp\pip-build-env-t_0q3g_h\overlay' --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel pycairo Check the logs for full command output.
I then referred to some posts on stackoverflow, they told me that gtk is no longer needed in python3 and replaced it by pgi. (I don't know should I replace the pygtk or gtk in the source code) So I tried out pip install pgi, error again.
Collecting pgi
Using cached pgi-0.0.11.2.tar.gz (239 kB)
ERROR: Command errored out with exit status 1:
command: 'c:\users\jared\appdata\local\programs\python\python37\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\jared\\AppData\\Local\\Temp\\pip-install-2znm3fjc\\pgi\\setup.py'"'"'; __file__='"'"'C:\\Users\\jared\\AppData\\Local\\Temp\\pip-install-2znm3fjc\\pgi\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base 'C:\Users\jared\AppData\Local\Temp\pip-pip-egg-info-5e57ceft'
cwd: C:\Users\jared\AppData\Local\Temp\pip-install-2znm3fjc\pgi\
Complete output (21 lines):
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:\Users\jared\AppData\Local\Temp\pip-install-2znm3fjc\pgi\setup.py", line 18, in <module>
import pgi
File "C:\Users\jared\AppData\Local\Temp\pip-install-2znm3fjc\pgi\pgi\__init__.py", line 10, in <module>
from .importer import require_version, get_required_version
File "C:\Users\jared\AppData\Local\Temp\pip-install-2znm3fjc\pgi\pgi\importer.py", line 15, in <module>
from .clib.gir import GIRepository
File "C:\Users\jared\AppData\Local\Temp\pip-install-2znm3fjc\pgi\pgi\clib\gir\__init__.py", line 8, in <module>
from .giargument import GIArgument
File "C:\Users\jared\AppData\Local\Temp\pip-install-2znm3fjc\pgi\pgi\clib\gir\giargument.py", line 9, in <module>
from ..glib import gboolean, gint8, guint8, gint16, guint16, gint32, guint32
File "C:\Users\jared\AppData\Local\Temp\pip-install-2znm3fjc\pgi\pgi\clib\glib.py", line 16, in <module>
_glib = find_library("glib-2.0")
File "C:\Users\jared\AppData\Local\Temp\pip-install-2znm3fjc\pgi\pgi\clib\_utils.py", line 99, in find_library
_internal[name] = cdll.LoadLibrary(_so_mapping[name])
File "c:\users\jared\appdata\local\programs\python\python37\lib\ctypes\__init__.py", line 442, in LoadLibrary
return self._dlltype(name)
File "c:\users\jared\appdata\local\programs\python\python37\lib\ctypes\__init__.py", line 364, in __init__
self._handle = _dlopen(self._name, mode)
OSError: [WinError 126] The specified module could not be found
----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
I don't know what was happening. I hope somebody will pull me out from this infinite error loop. Lots of thanks.
first I want to mention that I am using Xubuntu 20.04, so Linux.
In order to get the kivy example working you will need to replace the pygtk module with the PyGobject one. So install that, here are the instructions:
https://pygobject.readthedocs.io/en/latest/getting_started.html#windows-logo-windows
Now in this file https://github.com/cztomczak/cefpython/blob/master/src/linux/binaries_64bit/kivy_.py you need to change the imports and some other stuff. Here is how my imports look like
...
from cefpython3 import cefpython as cef
import gi # notice this line is added
# import pygtk # this one is commented out or you can delete it
from gi.repository import Gtk as gtk # this one is added
# import gtk # this one is commented out or you can delete it
import sys
...
from kivy.graphics.texture import Texture
from kivy.uix.boxlayout import BoxLayout
from kivy.base import EventLoop
# Global variables
g_switches = None
# PyGTK required
# pygtk.require('2.0') # this one is commented out or you can delete it
class BrowserLayout(BoxLayout):
...
I also needed to fix a parameter passed to the windowInfo.SetAsOffscreen method called somewhere around line 208 (in my case), look for the start_cef method definition. I set the parameter to 0 as per this https://github.com/cztomczak/cefpython/blob/master/api/WindowInfo.md#setasoffscreen as it mentions:
You can pass 0 as parentWindowHandle, but then some things like context menus and plugins may not display correctly.
So the code looks like this:
...
#popup widgets to work.
gtkwin = gtk.Window()
gtkwin.realize()
# WindowInfo offscreen flag
windowInfo = cef.WindowInfo()
windowInfo.SetAsOffscreen(0)
# Create Broswer and naviagte to empty page <= OnPaint won't get
# called yet
...