fixed performance issue with StringIO.

[sface.git] / sface / logwindow.py

diff --git a/sface/logwindow.py b/sface/logwindow.py
index c5c41dd..7c07b43 100644 (file)
--- a/sface/logwindow.py
+++ b/sface/logwindow.py
@@ -6,6 +6,8 @@ from PyQt4.QtGui import *
 
 from sface.config import config
 
+import time
+
 class LogIO(QObject):
     def __init__(self, parent, old_stdout):
         QObject.__init__(self, parent)
@@ -17,7 +19,15 @@ class LogIO(QObject):
         self.parent().update()
 
     def getText(self):
-        return self.io.getvalue()
+        self.old_stdout.write("getText: ENTERING\n")
+        val = self.io.getvalue()
+        # looks like there is no other way
+        # to empty the StringIO
+        del self.io
+        self.io = StringIO()
+        self.old_stdout.write("getText: GOT VALUE\n")
+        self.old_stdout.write(val + "\n")
+        return val
 
 class LogWindow(QDialog):
     def __init__(self, parent=None):
@@ -40,10 +50,15 @@ class LogWindow(QDialog):
         sys.stderr = self.logio
 
     def update(self):
-        self.text.setText(self.logio.getText())
+        #starttime = time.time()
+        #self.logio.old_stdout.write("update: entering\n")#.flush()
+        #self.logio.old_stdout.write('one\n')#.flush()
+        self.text.insertPlainText(self.logio.getText())
+        #self.logio.old_stdout.write('two\n')#.flush()
         c = self.text.textCursor()
+        #self.logio.old_stdout.write('three\n')#.flush()
         c.movePosition(QTextCursor.End)
+        #self.logio.old_stdout.write('four\n')#.flush()
         self.text.setTextCursor(c)
-        
-        
-        
+        #self.logio.old_stdout.write('five\n')#.flush()
+        #self.logio.old_stdout.write("update: done \n")# + time.strftime(('%M:%S'),"[%.3f s]"%(time.time() - starttime)))#.flush()