I don't use mel for years. But it would be great to have syntax highlighting in the expression editor. It's not that hard since maya build wiht Qt. Actually it's very easy to do it if you good at Qt. Here I'm gonna show you how to do it with PySide.
我n久没用过mel了,不过如果expression editor能有mel的高亮显示还是挺不错的。要添加这个并不难,因为maya是基于Qt的界面。实际上是一件很简单的事情,如果你擅长Qt的话。我在这里使用PySide来完成它。
Implementation[实现]
- You need a QSyntaxHighlighter | 你需要一个QSyntaxHighlighte
- apply the syntax highlighting rules to the expression editor's document | 把高亮显示的规则应用到expression editor的文档中
You can define your own mel QSyntaxHighlighter if you want. I not gonna do that I'll use the script editor's.
So the implementation should be
你也可以以定义你自己的mel QSyntaxHighlighter。我就直接使用脚本编辑器里的。我需要这么做
- open a expression editor, find it with PySide, find the QTextEdit in the expression editor | 打开expression editor,使用PySide找到它,再找到它的QTextEdit
- create a window with a mel cmdScrollFieldExecuter, this window will never show, and it'll create a mel QSyntaxHighlighter for you | 创建一个mel脚本编辑器窗口,这个窗口永远也不会显示,它会创建一个mel QSyntaxHighlighter
- find the mel QSyntaxHighlighter | 找到mel QSyntaxHighlighter
- apply it to the expression editor's document | 把它应用到expression editor的文档中
# --------------------------------------------------------------------------------
# Copyright (c) 2013 Mack Stone. All rights reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
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#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# --------------------------------------------------------------------------------
from maya import cmds
from PySide import QtGui
#from PyQt4 import QtGui
def showExpEditor():
"""
Add mel syntax highlighting for expression editor. Support Maya2011-2014
"""
tempWin = "mytempmelwin_xxxxxxxxxx"
# open expression editor
cmds.ExpressionEditor()
mapp = QtGui.QApplication.instance()
if not mapp: return mapp
mwin = mapp.activeWindow()
if mwin.objectName() != "MayaWindow":
mwin = mwin.parent()
# finde expression editor
expEditor = mwin.findChild(QtGui.QWidget, "expressionEditorWin")
expTextEd = expEditor.findChild(QtGui.QTextEdit)
# create a mel cmdScrollFieldExecuter
if cmds.window(tempWin, ex=1): cmds.deleteUI(tempWin)
cmds.window(tempWin)
cmds.columnLayout()
cmds.cmdScrollFieldExecuter(sourceType="mel")
# find tempWin
melWin = mwin.findChild(QtGui.QWidget, tempWin)
# find the SyntaxHighlighter
melHighlighter = melWin.findChild(QtGui.QSyntaxHighlighter)
melHighlighter.setDocument(expTextEd.document())
showExpEditor()
How about the auto completions in the expression editor?[mel命令自动完成呢]
I can't find the QCompleter from the Script Editor. Autodesk may implement it on the QTextEdit or somewhere. So if you want the auto completions you have to do it yourslef.
我没找到QCompleter,Autodesk 应该是用过其它方式来实现的,所以你需要自己去实现了。
No desktop snapshot. Just try the code and have fun with it.
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