Mercurial Repositories > eric / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/E5Gui/E5LineEdit.py	Wed Jan 13 18:53:58 2010 +0000
@@ -0,0 +1,62 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2009 - 2010 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing specialized line edits. 
+"""
+
+from PyQt4.QtCore import Qt
+from PyQt4.QtGui import QLineEdit, QStyleOptionFrameV2, QStyle, QPainter, QPalette
+
+class E5LineEdit(QLineEdit):
+    """
+    Class implementing a line edit widget showing some inactive text.
+    """
+    def __init__(self, parent = None, inactiveText = ""):
+        """
+        Constructor
+        
+        @param parent reference to the parent widget (QWidget)
+        @param inactiveText text to be shown on inactivity (string)
+        """
+        QLineEdit.__init__(self, parent)
+        
+        self.__inactiveText = inactiveText
+    
+    def inactiveText(self):
+        """
+        Public method to get the inactive text.
+        
+        return inactive text (string)
+        """
+        return self.__inactiveText
+    
+    def setInactiveText(self, inactiveText):
+        """
+        Public method to set the inactive text.
+        
+        @param inactiveText text to be shown on inactivity (string)
+        """
+        self.__inactiveText = inactiveText
+        self.update()
+    
+    def paintEvent(self, evt):
+        """
+        Protected method handling a paint event.
+        
+        @param evt reference to the paint event (QPaintEvent)
+        """
+        QLineEdit.paintEvent(self, evt)
+        if not self.text() and \
+           self.__inactiveText and \
+           not self.hasFocus():
+            panel = QStyleOptionFrameV2()
+            self.initStyleOption(panel)
+            textRect = \
+                self.style().subElementRect(QStyle.SE_LineEditContents, panel, self)
+            textRect.adjust(2, 0, 0, 0)
+            painter = QPainter(self)
+            painter.setPen(self.palette().brush(QPalette.Disabled, QPalette.Text).color())
+            painter.drawText(textRect, Qt.AlignLeft | Qt.AlignVCenter, self.__inactiveText)
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