from jmwright 72b67da

cq_editor/widgets/log.py

@@ -0,0 +1,43 @@
+import logbook as logging
+
+from PyQt5.QtWidgets import QPlainTextEdit
+from PyQt5 import QtCore
+
+from ..mixins import ComponentMixin
+
+class QtLogHandler(logging.Handler,logging.StringFormatterHandlerMixin):
+    
+    def __init__(self, log_widget,*args,**kwargs):
+        
+        super(QtLogHandler,self).__init__(*args,**kwargs)
+        logging.StringFormatterHandlerMixin.__init__(self,None)
+        
+        self.log_widget = log_widget
+
+    def emit(self, record):
+        
+        msg = self.format(record)
+        QtCore.QMetaObject\
+            .invokeMethod(self.log_widget,
+                          'appendPlainText',
+                          QtCore.Qt.QueuedConnection,
+                          QtCore.Q_ARG(str, msg))
+
+class LogViewer(QPlainTextEdit, ComponentMixin):
+    
+    name = 'Log viewer'
+    
+    def __init__(self,*args,**kwargs):
+        
+        super(LogViewer,self).__init__(*args,**kwargs)
+        self._MAX_ROWS = 500
+        
+        self.setReadOnly(True)
+        self.setMaximumBlockCount(self._MAX_ROWS)
+        self.setLineWrapMode(QPlainTextEdit.NoWrap)
+        
+        self.handler = QtLogHandler(self)
+        
+    def append(self,msg):
+        
+        self.appendPlainText(msg)