Mercurial Repositories > eric / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eric6/E5Gui/E5SqueezeLabels.py	Sun Apr 14 15:09:21 2019 +0200
@@ -0,0 +1,134 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2008 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing labels that squeeze their contents to fit the size of the
+label.
+"""
+
+from __future__ import unicode_literals
+
+from PyQt5.QtCore import Qt
+from PyQt5.QtWidgets import QLabel
+
+from Utilities import compactPath
+
+
+class E5SqueezeLabel(QLabel):
+    """
+    Class implementing a label that squeezes its contents to fit its size.
+    """
+    def __init__(self, parent=None):
+        """
+        Constructor
+        
+        @param parent reference to the parent Widget (QWidget)
+        """
+        super(E5SqueezeLabel, self).__init__(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())
+            super(E5SqueezeLabel, self).setText(self.__elided)
+        else:
+            super(E5SqueezeLabel, self).setText(self.__text)
+        super(E5SqueezeLabel, self).paintEvent(event)
+    
+    def setText(self, txt):
+        """
+        Public method to set the label's text.
+        
+        @param txt the text to be shown (string)
+        """
+        self.__text = txt
+        super(E5SqueezeLabel, self).setText(self.__text)
+
+
+class E5SqueezeLabelPath(QLabel):
+    """
+    Class implementing a label showing a file path compacted to fit its size.
+    """
+    def __init__(self, parent=None):
+        """
+        Constructor
+        
+        @param parent reference to the parent Widget (QWidget)
+        """
+        super(E5SqueezeLabelPath, self).__init__(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
+        super(E5SqueezeLabelPath, self).setText(
+            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
+        super(E5SqueezeLabelPath, self).setText(
+            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
+        super(E5SqueezeLabelPath, self).setText(
+            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()):
+            super(E5SqueezeLabelPath, self).setText(
+                self.__surrounding.format(compactPath(self.__path,
+                                          self.contentsRect().width(),
+                                          self.length))
+            )
+        else:
+            super(E5SqueezeLabelPath, self).setText(
+                self.__surrounding.format(self.__path))
+        super(E5SqueezeLabelPath, self).paintEvent(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))