Mercurial Repositories > eric / file comparison
comparison: E5Gui/E5SqueezeLabels.py
E5Gui/E5SqueezeLabels.py
- changeset 55
- b5c84934de9c
- child 791
- 9ec2ac20e54e
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| 54:31463df17fd5 | 55:b5c84934de9c |
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| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2008 - 2010 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing labels that squeeze their contents to fit the size of the label. | |
| 8 """ | |
| 9 | |
| 10 from PyQt4.QtCore import Qt | |
| 11 from PyQt4.QtGui import QLabel | |
| 12 | |
| 13 from Utilities import compactPath | |
| 14 | |
| 15 class E5SqueezeLabel(QLabel): | |
| 16 """ | |
| 17 Class implementing a label that squeezes its contents to fit it's size. | |
| 18 """ | |
| 19 def __init__(self, parent = None): | |
| 20 """ | |
| 21 Constructor | |
| 22 | |
| 23 @param parent reference to the parent Widget (QWidget) | |
| 24 """ | |
| 25 QLabel.__init__(self, parent) | |
| 26 | |
| 27 self.__text = '' | |
| 28 self.__elided = '' | |
| 29 | |
| 30 def paintEvent(self, event): | |
| 31 """ | |
| 32 Protected method called when some painting is required. | |
| 33 | |
| 34 @param event reference to the paint event (QPaintEvent) | |
| 35 """ | |
| 36 fm = self.fontMetrics() | |
| 37 if fm.width(self.__text) > self.contentsRect().width(): | |
| 38 self.__elided = fm.elidedText(self.text(), Qt.ElideMiddle, self.width()) | |
| 39 QLabel.setText(self, self.__elided) | |
| 40 else: | |
| 41 QLabel.setText(self, self.__text) | |
| 42 QLabel.paintEvent(self, event) | |
| 43 | |
| 44 def setText(self, txt): | |
| 45 """ | |
| 46 Public method to set the label's text. | |
| 47 | |
| 48 @param txt the text to be shown (string) | |
| 49 """ | |
| 50 self.__text = txt | |
| 51 QLabel.setText(self, self.__text) | |
| 52 | |
| 53 class E5SqueezeLabelPath(QLabel): | |
| 54 """ | |
| 55 Class implementing a label showing a file path compacted to fit it's size. | |
| 56 """ | |
| 57 def __init__(self, parent = None): | |
| 58 """ | |
| 59 Constructor | |
| 60 | |
| 61 @param parent reference to the parent Widget (QWidget) | |
| 62 """ | |
| 63 QLabel.__init__(self, parent) | |
| 64 | |
| 65 self.__path = '' | |
| 66 self.__surrounding = "{0}" | |
| 67 | |
| 68 def setSurrounding(self, surrounding): | |
| 69 """ | |
| 70 Public method to set the surrounding of the path string. | |
| 71 | |
| 72 @param surrounding the a string containg placeholders for the path (string) | |
| 73 """ | |
| 74 self.__surrounding = surrounding | |
| 75 QLabel.setText(self, self.__surrounding.format(self.__path)) | |
| 76 | |
| 77 def setPath(self, path): | |
| 78 """ | |
| 79 Public method to set the path of the label. | |
| 80 | |
| 81 @param path path to be shown (string) | |
| 82 """ | |
| 83 self.__path = path | |
| 84 QLabel.setText(self, self.__surrounding.format(self.__path)) | |
| 85 | |
| 86 def setTextPath(self, surrounding, path): | |
| 87 """ | |
| 88 Public method to set the surrounding and the path of the label. | |
| 89 | |
| 90 @param surrounding the a string containg placeholders for the path (string) | |
| 91 @param path path to be shown (string) | |
| 92 """ | |
| 93 self.__surrounding = surrounding | |
| 94 self.__path = path | |
| 95 QLabel.setText(self, self.__surrounding.format(self.__path)) | |
| 96 | |
| 97 def paintEvent(self, event): | |
| 98 """ | |
| 99 Protected method called when some painting is required. | |
| 100 | |
| 101 @param event reference to the paint event (QPaintEvent) | |
| 102 """ | |
| 103 fm = self.fontMetrics() | |
| 104 if fm.width(self.__surrounding.format(self.__path)) > self.contentsRect().width(): | |
| 105 QLabel.setText(self, | |
| 106 self.__surrounding.format(compactPath(self.__path, | |
| 107 self.contentsRect().width(), | |
| 108 self.length)) | |
| 109 ) | |
| 110 else: | |
| 111 QLabel.setText(self, self.__surrounding.format(self.__path)) | |
| 112 QLabel.paintEvent(self, event) | |
| 113 | |
| 114 def length(self, txt): | |
| 115 """ | |
| 116 Public method to return the length of a text in pixels. | |
| 117 | |
| 118 @param txt text to calculate the length for after wrapped (string) | |
| 119 @return length of the wrapped text in pixels (integer) | |
| 120 """ | |
| 121 return self.fontMetrics().width(self.__surrounding.format(txt)) |
