QtWebKit 神功在手 天下我有。。。。。

QtWebKit 神功在手 天下我有。。。。。
这篇是为了做Rss项目而研究WebKit后的副产品,但是它的意义远大于离线Rss阅读

这是另一个RichEdit 并且编辑起来更容易
而且它很容易转换到B/S结构,不管需求是环肥燕瘦都能适应......

估计这是最简单的一种 xml文档、html预览、RichEdit 三位一体的方案了......

代码:
import  sys,locale
encoding
= locale.getdefaultlocale()[ 1 ]
from  PyQt4  import  Qt
from  PyQt4  import  QtCore
from  PyQt4  import  QtGui
from  PyQt4  import  QtWebKit

html
= r ''' <html>
<head></head>
<body>
<script>
function onChanged(e,id) { 
var element =document.getElementById(id);
python.onChanged(id,element.textContent); 
}
</script>
<div id="main">
<h1 id="title"" contenteditable="true" onkeyup="onChanged(event,'title')">T1</h1>
<div id='body'>
<p id='body_line1' contenteditable="true" onkeyup="onChanged(event,'body_line1')">123456</p>
<p id='body_line2' contenteditable="true" onkeyup="onChanged(event,'body_line2')">abdcdef</p>
</div>
</div>
<body>
</html>
'''

class  PythonJS(QtCore.QObject):
    
    
__pyqtSignals__   =  ( " contentChanged(const QString &,const QString &) " )
    
    @QtCore.pyqtSignature(
" QString,QString " )
    
def  onChanged(self, id,msg):
        self.emit(QtCore.SIGNAL(
' contentChanged(const QString &,const QString &) ' ),id, msg)

    @QtCore.pyqtSignature(
"" , result = " QString " )
    
def  message(self): 
        
return   " Message! "


class  MainWindow(QtGui.QMainWindow):
    
def   __init__ (self):
        super(MainWindow,self).
__init__ ()
        self.update
= True
        
        self.tabs
= QtGui.QTabWidget(self)
        self.browser
= QtWebKit.QWebView(self.tabs)
        self.edit
= QtGui.QPlainTextEdit(self.tabs)
        
        self.tabs.addTab(self.browser,
' View ' )
        self.tabs.addTab(self.edit,
' Edit ' )
        self.html
= html
        self.edit.setPlainText(self.html)
        
        self.pjs
= PythonJS()
        
        self.connect(self.edit,QtCore.SIGNAL(
' textChanged() ' ),self.onTextChanged)
        self.connect(self.pjs,QtCore.SIGNAL(
' contentChanged(const QString &,const QString &) ' ),self.onJSMessage)
        self.connect(self.browser.page().mainFrame(),QtCore.SIGNAL(
' javaScriptWindowObjectCleared () ' ),self.onObjectClear)
        
        self.browser.setHtml(self.html)
        
    
def  onJSMessage(self,id,msg):
        
        self.html
=  self.browser.page().mainFrame ().toHtml()
        
# print unicode(self.html).encode(encoding)
        self.setEditText(self.html)
        
    
def  resizeEvent(self,s):
        size
= self.size()
        self.tabs.resize(size)

    
def  setEditText(self,str,update = False):
        t
= self.update
        self.update
= update
        self.edit.setPlainText(str)
        self.update
= t
        
            
    
def  onTextChanged(self):
        
if  self.update:
            self.html
=  self.edit.toPlainText() 
            self.browser.setHtml(self.html)
            self.browser.page().mainFrame().addToJavaScriptWindowObject(
' python ' ,self.pjs) 
            self.browser.reload()
            
    
def  onObjectClear(self):
        self.browser.page().mainFrame().addToJavaScriptWindowObject(
' python ' ,self.pjs)  
    
if   __name__ == ' __main__ ' :
    app
= QtGui.QApplication(sys.argv)
    frame
= MainWindow()
    frame.show()
    sys.exit(app.exec_())       
        



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