Cocos2dLua3.17.2集成FairyGUI之 lua绑定 (二)

上一章中将fairyGUI集成到C++工程，由于本人使用的是cocoslua,还需要将C++的绑定到lua中使用，本章记录一下过程，由于是过了一段时间，有些步骤忘记了，大概记录一下，诸位大大做个临时参考吧

1 打开\cocos2d-x-3.17.2\tools\tolua文件夹，创建一个py脚本，FairyGUIgenbindings.py.仿照genbingings.py写入代码：

 #!/usr/bin/python

 # This script is used to generate luabinding glue codes.
 # Android ndk version must be ndk-r9b.

 import sys
 import os, os.path
 import shutil
 import ConfigParser
 import subprocess
 import re
 from contextlib import contextmanager

 def _check_ndk_root_env():
     ''' Checking the environment NDK_ROOT, which will be used for building
     '''

     try:
         NDK_ROOT = os.environ['NDK_ROOT']
     except Exception:
         print "NDK_ROOT not defined. Please define NDK_ROOT in your environment."
         sys.exit(1)

     return NDK_ROOT

 def _check_python_bin_env():
     ''' Checking the environment PYTHON_BIN, which will be used for building
     '''

     try:
         PYTHON_BIN = os.environ['PYTHON_BIN']
     except Exception:
         print "PYTHON_BIN not defined, use current python."
         PYTHON_BIN = sys.executable

     return PYTHON_BIN

 class CmdError(Exception):
     pass

 @contextmanager
 def _pushd(newDir):
     previousDir = os.getcwd()
     os.chdir(newDir)
     yield
     os.chdir(previousDir)

 def _run_cmd(command):
     ret = subprocess.call(command, shell=True)
     if ret != 0:
         message = "Error running command"
         raise CmdError(message)

 def main():

     cur_platform= '??'
     llvm_path = '??'
     ndk_root = _check_ndk_root_env()
     # del the " in the path
     ndk_root = re.sub(r"\"", "", ndk_root)
     python_bin = _check_python_bin_env()

     platform = sys.platform
     if platform == 'win32':
         cur_platform = 'windows'
     elif platform == 'darwin':
         cur_platform = platform
     elif 'linux' in platform:
         cur_platform = 'linux'
     else:
         print 'Your platform is not supported!'
         sys.exit(1)

     x86_llvm_path = ""
     x64_llvm_path = os.path.abspath(os.path.join(ndk_root, 'toolchains/llvm/prebuilt', '%s-%s' % (cur_platform, 'x86_64')))
     if not os.path.exists(x64_llvm_path):
         x86_llvm_path = os.path.abspath(os.path.join(ndk_root, 'toolchains/llvm/prebuilt', '%s' % (cur_platform)))
     if not os.path.exists(x86_llvm_path):
         x86_llvm_path = os.path.abspath(os.path.join(ndk_root, 'toolchains/llvm/prebuilt', '%s-%s' % (cur_platform, 'x86')))

     if os.path.isdir(x64_llvm_path):
         llvm_path = x64_llvm_path
     elif os.path.isdir(x86_llvm_path):
         llvm_path = x86_llvm_path
     else:
         print 'llvm toolchain not found!'
         print 'path: %s or path: %s are not valid! ' % (x86_llvm_path, x64_llvm_path)
         sys.exit(1)

     x86_gcc_toolchain_path = ""
     x64_gcc_toolchain_path = os.path.abspath(os.path.join(ndk_root, 'toolchains/arm-linux-androideabi-4.9/prebuilt', '%s-%s' % (cur_platform, 'x86_64')))
     if not os.path.exists(x64_gcc_toolchain_path):
         x86_gcc_toolchain_path = os.path.abspath(os.path.join(ndk_root, 'toolchains/arm-linux-androideabi-4.9/prebuilt', '%s' % (cur_platform)))
     if not os.path.exists(x86_gcc_toolchain_path):
         x86_gcc_toolchain_path = os.path.abspath(os.path.join(ndk_root, 'toolchains/arm-linux-androideabi-4.9/prebuilt', '%s-%s' % (cur_platform, 'x86')))

     if os.path.isdir(x64_gcc_toolchain_path):
         gcc_toolchain_path = x64_gcc_toolchain_path
     elif os.path.isdir(x86_gcc_toolchain_path):
         gcc_toolchain_path = x86_gcc_toolchain_path
     else:
         print 'gcc toolchain not found!'
         print 'path: %s or path: %s are not valid! ' % (x64_gcc_toolchain_path, x86_gcc_toolchain_path)
         sys.exit(1)

     project_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..'))
     cocos_root = os.path.abspath(os.path.join(project_root, ''))
     cxx_generator_root = os.path.abspath(os.path.join(project_root, 'tools/bindings-generator'))

     # save config to file
     config = ConfigParser.ConfigParser()
     config.set('DEFAULT', 'androidndkdir', ndk_root)
     config.set('DEFAULT', 'clangllvmdir', llvm_path)
     config.set('DEFAULT', 'gcc_toolchain_dir', gcc_toolchain_path)
     config.set('DEFAULT', 'cocosdir', cocos_root)
     config.set('DEFAULT', 'cxxgeneratordir', cxx_generator_root)
     config.set('DEFAULT', 'extra_flags', '')

     conf_ini_file = os.path.abspath(os.path.join(os.path.dirname(__file__), 'userconf.ini'))

     print 'generating userconf.ini...'
     with open(conf_ini_file, 'w') as configfile:
       config.write(configfile)

     # set proper environment variables
     if 'linux' in platform or platform == 'darwin':
         os.putenv('LD_LIBRARY_PATH', '%s/libclang' % cxx_generator_root)
     if platform == 'win32':
         path_env = os.environ['PATH']
         os.putenv('PATH', r'%s;%s\libclang;%s\tools\win32;' % (path_env, cxx_generator_root, cxx_generator_root))

     try:

         tolua_root = '%s/tools/tolua' % project_root
         output_dir = '%s/cocos/scripting/lua-bindings/auto' % project_root

         cmd_args = {
                     'cocos2dx_fairygui.ini' : ('cocos2dx_fairygui', 'lua_cocos2dx_fairygui_auto'), \
                     }
         target = 'lua'
         generator_py = '%s/generator.py' % cxx_generator_root
         for key in cmd_args.keys():
             args = cmd_args[key]
             cfg = '%s/%s' % (tolua_root, key)
             print 'Generating bindings for %s...' % (key[:-4])
             command = '%s %s %s -s %s -t %s -o %s -n %s' % (python_bin, generator_py, cfg, args[0], target, output_dir, args[1])
             _run_cmd(command)

         print '---------------------------------'
         print 'Generating lua bindings succeeds.'
         print '---------------------------------'

     except Exception as e:
         if e.__class__.__name__ == 'CmdError':
             print '---------------------------------'
             print 'Generating lua bindings fails.'
             print '---------------------------------'
             sys.exit(1)
         else:
             raise

 # -------------- main --------------
 if __name__ == '__main__':
     main()

新建cocos2dx_fairygui.ini文件写入代码

[cocos2dx_fairygui]
# the prefix to be added to the generated functions. You might or might not use this in your own
# templates
prefix = cocos2dx_fairygui

# create a target namespace (in javascript, this would create some code like the equiv. to `ns = ns || {}`)
# all classes will be embedded in that namespace
target_namespace = fgui

android_headers = 

android_flags = -target armv7-none-linux-androideabi -D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS -DANDROID -D__ANDROID_API__= -gcc-toolchain %(gcc_toolchain_dir)s --sysroot=%(androidndkdir)s/platforms/android-/arch-arm  -idirafter %(androidndkdir)s/sources/android/support/include -idirafter %(androidndkdir)s/sysroot/usr/include -idirafter %(androidndkdir)s/sysroot/usr/include/arm-linux-androideabi -idirafter %(clangllvmdir)s/lib64/clang/5.0/include -I%(androidndkdir)s/sources/cxx-stl/llvm-libc++/include

clang_headers =
clang_flags = -nostdinc -x c++ -std=c++ -fsigned-char -U__SSE__

cocos_headers = -I%(cocosdir)s -I%(cocosdir)s/cocos -I%(cocosdir)s/../libfairygui/Classes -I%(cocosdir)s/cocos/platform/android -I%(cocosdir)s/external 

cocos_flags = -DANDROID

cxxgenerator_headers = 

# extra arguments for clang
extra_arguments = %(android_headers)s %(clang_headers)s %(cxxgenerator_headers)s %(cocos_headers)s %(android_flags)s %(clang_flags)s %(cocos_flags)s %(extra_flags)s 

# what headers to parse
headers = %(cocosdir)s/../libfairygui/Classes/FairyGUI.h %(cocosdir)s/../libfairygui/Classes/FairyGUIMacros.h

# what classes to produce code for. You can use regular expressions here. When testing the regular
# expression, it will be enclosed in "^$", like this: "^Menu*$".
classes = UIPackage GRoot GObject GComponent UIEventDispatcher GImage GMovieClip GTextField GRichTextField GTextInput GGraph GLoader GGroup GButton GComboBox GProgressBar GSlider GScrollBar GList Window PopupMenu UIObjectFactory GObjectPool DragDropManager FairyGUIMacros EventContext JoystickModule Transition GController ScrollPane InputEvent

# what should we skip? in the format ClassName::[function function]
# ClassName is a regular expression, but will be used like this: "^ClassName$" functions are also
# regular expressions, they will not be surrounded by "^$". If you want to skip a whole class, just
# add a single "*" as functions. See bellow for several examples. A special class name is "*", which
# will apply to all class names. This is a convenience wildcard to be able to skip similar named
# functions from all classe/s.

skip =
#skip = UIEventDispatcher::[^addEventListener$ ^removeEventListener$ ^hasEventListener$],
#    GObject::[^addClickListener$ removeClickListener getData],
#    GComponent::[^constructFromResource$],
#    Transition::[^play$ setup],
#    UIObjectFactory::[setPackageItemExtension],
#    GController::[setup],
#    EventContext::[getData]

rename_functions =

rename_classes = 

# for all class names, should we remove something when registering in the target VM?
remove_prefix = 

# classes for which there will be no "parent" lookup
classes_have_no_parents = 

# base classes which will be skipped when their sub-classes found them.
base_classes_to_skip =

# classes that create no constructor
# Set is special and we will use a hand-written constructor
abstract_classes = ArmatureDataManager Manifest

# Determining whether to use script object(js object) to control the lifecycle of native(cpp) object or the other way around. Supported values are 'yes' or 'no'.
script_control_cpp = no

2修改cocos2d-x-3.17.2\tools\bindings-generator\targets\lua\conversions.yaml里的ns_map:下添加fairygui的命名空间"fairygui::": "fgui."

以及在中间to_native:和底部from_native:

添加下面代码，以便处理Margin类型的转换。

 to_native:
"Margin": "ok &= luaval_to_margin(tolua_S, ${arg_idx}, &${out_value}, ${lua_namespaced_class_name}:${func_name})"

 from_native:
"Margin": "margin_to_luaval(tolua_S, ${in_value})"

2 命令行执行 FairyGUIgenbindings.py. 要用python2版本。执行后在cocos2d-x-3.17.2\cocos\scripting\lua-bindings\auto文件夹下会生成

两个文件。在C++工程中导入两个文件。

3 在lua_module_register中include头文件并注册

4，编译运行

5 成功截图

lua测试代码（直接用的fairy的demo资源）

注释：过程中可能会遇到一些问题，由于我是好些天前集成的，遇到的一些问题都忘记截图了，以上只是大体的流程。

放上一点test的 lua 代码:

链接：https://pan.baidu.com/s/1MSzsX78rZKPV2TQrVWxsmg
提取码：nh5i