Mercurial Repositories > eric / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/E5Gui/E5SqueezeLabels.py	Wed Jan 13 18:53:58 2010 +0000
@@ -0,0 +1,121 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2008 - 2010 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing labels that squeeze their contents to fit the size of the label.
+"""
+
+from PyQt4.QtCore import Qt
+from PyQt4.QtGui import QLabel
+
+from Utilities import compactPath
+
+class E5SqueezeLabel(QLabel):
+    """
+    Class implementing a label that squeezes its contents to fit it's size.
+    """
+    def __init__(self, parent = None):
+        """
+        Constructor
+        
+        @param parent reference to the parent Widget (QWidget)
+        """
+        QLabel.__init__(self, parent)
+        
+        self.__text = ''
+        self.__elided = ''
+    
+    def paintEvent(self, event):
+        """
+        Protected method called when some painting is required.
+        
+        @param event reference to the paint event (QPaintEvent)
+        """
+        fm = self.fontMetrics()
+        if fm.width(self.__text) > self.contentsRect().width():
+            self.__elided = fm.elidedText(self.text(), Qt.ElideMiddle, self.width())
+            QLabel.setText(self, self.__elided)
+        else:
+            QLabel.setText(self, self.__text)
+        QLabel.paintEvent(self, event)
+    
+    def setText(self, txt):
+        """
+        Public method to set the label's text.
+        
+        @param txt the text to be shown (string)
+        """
+        self.__text = txt
+        QLabel.setText(self, self.__text)
+
+class E5SqueezeLabelPath(QLabel):
+    """
+    Class implementing a label showing a file path compacted to fit it's size.
+    """
+    def __init__(self, parent = None):
+        """
+        Constructor
+        
+        @param parent reference to the parent Widget (QWidget)
+        """
+        QLabel.__init__(self, parent)
+        
+        self.__path = ''
+        self.__surrounding = "{0}"
+    
+    def setSurrounding(self, surrounding):
+        """
+        Public method to set the surrounding of the path string.
+        
+        @param surrounding the a string containg placeholders for the path (string)
+        """
+        self.__surrounding = surrounding
+        QLabel.setText(self, self.__surrounding.format(self.__path))
+    
+    def setPath(self, path):
+        """
+        Public method to set the path of the label.
+        
+        @param path path to be shown (string)
+        """
+        self.__path = path
+        QLabel.setText(self, self.__surrounding.format(self.__path))
+    
+    def setTextPath(self, surrounding, path):
+        """
+        Public method to set the surrounding and the path of the label.
+        
+        @param surrounding the a string containg placeholders for the path (string)
+        @param path path to be shown (string)
+        """
+        self.__surrounding = surrounding
+        self.__path = path
+        QLabel.setText(self, self.__surrounding.format(self.__path))
+    
+    def paintEvent(self, event):
+        """
+        Protected method called when some painting is required.
+        
+        @param event reference to the paint event (QPaintEvent)
+        """
+        fm = self.fontMetrics()
+        if fm.width(self.__surrounding.format(self.__path)) > self.contentsRect().width():
+            QLabel.setText(self, 
+                self.__surrounding.format(compactPath(self.__path, 
+                                          self.contentsRect().width(), 
+                                          self.length))
+            )
+        else:
+            QLabel.setText(self, self.__surrounding.format(self.__path))
+        QLabel.paintEvent(self, event)
+    
+    def length(self, txt):
+        """
+        Public method to return the length of a text in pixels.
+        
+        @param txt text to calculate the length for after wrapped (string)
+        @return length of the wrapped text in pixels (integer)
+        """
+        return self.fontMetrics().width(self.__surrounding.format(txt))
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